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Company · Tokyo · Japan

Hitachi (Japan)

In research, Hitachi (Japan) stands highest in Physical Sciences (#1,673 of 10,670 worldwide), Engineering (#2,047 of 5,901 worldwide) and Electrical and Electronic Engineering (#1,118 of 2,176 worldwide), 2022-now. Relative to its size it is most specialised in Surfaces, Coatings and Films, Industrial and Manufacturing Engineering and Control and Systems Engineering (Surfaces, Coatings and Films is 13.6× its share of world research).

hitachi.comROR OpenAlex
World rank, 2022-now
#3,783
of 22,385 · #2,935 all time
Rank in Japan
#78
of 924
Research works
36k
▼ 16% vs 2018-21
Citations
411k
11.4 per fractional work
Top-10% rate
3.5%
all institutions 10.0%
vs its own fields
0.66×
1.00× is exactly expected
Open access
27%
world 40%
International
11%
world 18%
Hitachi (Japan)

What is Hitachi (Japan) known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #1,673 of 10,670 3.2%1,707 #1483
EngineeringField #2,047 of 5,901 3.0%1,031 #1355
Electrical and Electronic EngineeringSubfield #1,118 of 2,176 2.9%385 #759
Computer ScienceField #2,689 of 4,417 3.1%301 #2706
Physics and AstronomyField #950 of 1,417 5.3%97 #1023
Materials ScienceField #1,607 of 2,276 3.7%153 #1321
Life SciencesDomain #4,534 of 6,403 2.8%69 #6757
Materials ChemistrySubfield #1,102 of 1,473 4.0%77 #1141
Health SciencesDomain #7,484 of 9,902 6.5%86 #13828
Artificial IntelligenceSubfield #1,414 of 1,862 4.1%100 #2033

Each strip is that field's whole ranked pool, with the notch where Hitachi (Japan) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022-now. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#1,483 #1,673
  2. Engineering#1,355 #2,047
  3. Electrical and Electronic Engineering#759 #1,118
  4. Computer Science#2,706 #2,689
  5. Physics and Astronomy#1,023 #950
  6. Materials Science#1,321 #1,607
  7. Life Sciences#6,757 #4,534
  8. Materials Chemistry#1,141 #1,102
  9. Health Sciences#13,828 #7,484
  10. Artificial Intelligence#2,033 #1,414
all time2022-now, better2022-now, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

Which fields of science does Hitachi (Japan) work in?

In 2022-now, 86% of research at Hitachi (Japan) is in Physical Sciences, 6% in Social Sciences. Its largest fields are Engineering (52%), Computer Science (16%), Materials Science (8%). It does 2.2× the world's share of Physical Sciences.

Physical Sciences: 1,849 fractional works · 86.4% of its workEngineering: 1,107 fractional works · 51.7% of its workElectrical and Electronic Engineering: 417 fractional works · 19.5% of its workControl and Systems Engineering: 147 fractional works · 6.8% of its workMechanical Engineering: 121 fractional works · 5.6% of its workIndustrial and Manufacturing Engineering: 70 fractional works · 3.3% of its workBiomedical Engineering: 61 fractional works · 2.9% of its workAerospace Engineering: 58 fractional works · 2.7% of its workCivil and Structural Engineering: 56 fractional works · 2.6% of its workAutomotive Engineering: 46 fractional works · 2.1% of its workMechanics of Materials: 40 fractional works · 1.9% of its workComputational Mechanics: 26 fractional works · 1.2% of its workSafety, Risk, Reliability and Quality: 19 fractional works · 0.9% of its workBuilding and Construction: 18 fractional works · 0.9% of its workOcean Engineering: 14 fractional works · 0.6% of its workMedia Technology: 12 fractional works · 0.6% of its workComputer Science: 332 fractional works · 15.5% of its workArtificial Intelligence: 114 fractional works · 5.3% of its workComputer Vision and Pattern Recognition: 59 fractional works · 2.8% of its workComputer Networks and Communications: 48 fractional works · 2.2% of its workInformation Systems: 45 fractional works · 2.1% of its workSignal Processing: 21 fractional works · 1.0% of its workComputational Theory and Mathematics: 14 fractional works · 0.7% of its workSoftware: 11 fractional works · 0.5% of its workHardware and Architecture: 8 fractional works · 0.4% of its workHuman-Computer Interaction: 8 fractional works · 0.4% of its workSmaller subfields together: 4 fractional works · 0.2% of its workMaterials Science: 166 fractional works · 7.7% of its workMaterials Chemistry: 82 fractional works · 3.8% of its workElectronic, Optical and Magnetic Materials: 34 fractional works · 1.6% of its workSurfaces, Coatings and Films: 29 fractional works · 1.3% of its workPolymers and Plastics: 7 fractional works · 0.3% of its workBiomaterials: 5 fractional works · 0.2% of its workSmaller subfields together: 9 fractional works · 0.4% of its workPhysics and Astronomy: 109 fractional works · 5.1% of its workAtomic and Molecular Physics, and Optics: 58 fractional works · 2.7% of its workRadiation: 16 fractional works · 0.8% of its workCondensed Matter Physics: 13 fractional works · 0.6% of its workStatistical and Nonlinear Physics: 8 fractional works · 0.4% of its workAstronomy and Astrophysics: 7 fractional works · 0.3% of its workSmaller subfields together: 6 fractional works · 0.3% of its workEnvironmental Science: 47 fractional works · 2.2% of its workGlobal and Planetary Change: 11 fractional works · 0.5% of its workEnvironmental Engineering: 10 fractional works · 0.5% of its workWater Science and Technology: 5 fractional works · 0.3% of its workEcology: 5 fractional works · 0.2% of its workSmaller subfields together: 16 fractional works · 0.7% of its workEnergy: 27 fractional works · 1.3% of its workRenewable Energy, Sustainability and the Environment: 15 fractional works · 0.7% of its workEnergy Engineering and Power Technology: 11 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 0.0% of its workChemistry: 24 fractional works · 1.1% of its workOrganic Chemistry: 7 fractional works · 0.3% of its workSpectroscopy: 6 fractional works · 0.3% of its workSmaller subfields together: 11 fractional works · 0.5% of its workChemical Engineering: 13 fractional works · 0.6% of its workFluid Flow and Transfer Processes: 7 fractional works · 0.3% of its workSmaller subfields together: 6 fractional works · 0.3% of its workEarth and Planetary Sciences: 13 fractional works · 0.6% of its workMathematics: 12 fractional works · 0.5% of its workSocial Sciences: 118 fractional works · 5.5% of its workSocial Sciences: 36 fractional works · 1.7% of its workSociology and Political Science: 12 fractional works · 0.6% of its workTransportation: 10 fractional works · 0.5% of its workSmaller subfields together: 14 fractional works · 0.7% of its workBusiness, Management and Accounting: 27 fractional works · 1.2% of its workManagement Information Systems: 9 fractional works · 0.4% of its workManagement of Technology and Innovation: 6 fractional works · 0.3% of its workMarketing: 5 fractional works · 0.2% of its workStrategy and Management: 4 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.1% of its workDecision Sciences: 22 fractional works · 1.0% of its workStatistics, Probability and Uncertainty: 10 fractional works · 0.5% of its workManagement Science and Operations Research: 9 fractional works · 0.4% of its workSmaller subfields together: 3 fractional works · 0.1% of its workPsychology: 21 fractional works · 1.0% of its workSocial Psychology: 10 fractional works · 0.4% of its workExperimental and Cognitive Psychology: 6 fractional works · 0.3% of its workSmaller subfields together: 5 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 7 fractional works · 0.3% of its workArts and Humanities: 6 fractional works · 0.3% of its workHealth Sciences: 96 fractional works · 4.5% of its workMedicine: 82 fractional works · 3.8% of its workPulmonary and Respiratory Medicine: 14 fractional works · 0.7% of its workRadiology, Nuclear Medicine and Imaging: 13 fractional works · 0.6% of its workSurgery: 6 fractional works · 0.3% of its workPhysiology: 5 fractional works · 0.2% of its workOncology: 5 fractional works · 0.2% of its workSmaller subfields together: 39 fractional works · 1.8% of its workHealth Professions: 11 fractional works · 0.5% of its workNursing: 2 fractional works · 0.1% of its workDentistry: 1 fractional works · 0.0% of its workVeterinary: 1 fractional works · 0.0% of its workLife Sciences: 76 fractional works · 3.6% of its workBiochemistry, Genetics and Molecular Biology: 46 fractional works · 2.2% of its workMolecular Biology: 19 fractional works · 0.9% of its workStructural Biology: 13 fractional works · 0.6% of its workSmaller subfields together: 13 fractional works · 0.6% of its workAgricultural and Biological Sciences: 12 fractional works · 0.6% of its workPlant Science: 6 fractional works · 0.3% of its workSmaller subfields together: 6 fractional works · 0.3% of its workNeuroscience: 12 fractional works · 0.6% of its workCognitive Neuroscience: 8 fractional works · 0.4% of its workSmaller subfields together: 4 fractional works · 0.2% of its workImmunology and Microbiology: 4 fractional works · 0.2% of its workPharmacology, Toxicology and Pharmaceutics: 2 fractional works · 0.1% of its workALL ITS WORKHitachi (Japan)2,139fractional works, 2022-now
Life Sciences4%Physical Sciences86%Health Sciences5%Social Sciences6%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 26 fields, with their numbers
    1. Engineering1,10751.7%
    2. Computer Science33215.5%
    3. Materials Science1667.7%
    4. Physics and Astronomy1095.1%
    5. Environmental Science472.2%
    6. Energy271.3%
    7. Chemistry241.1%
    8. Chemical Engineering130.6%
    9. Earth and Planetary Sciences130.6%
    10. Mathematics120.5%
    1. Social Sciences361.7%
    2. Business, Management and Accounting271.2%
    3. Decision Sciences221.0%
    4. Psychology211.0%
    5. Economics, Econometrics and Finance70.3%
    6. Arts and Humanities60.3%
    1. Medicine823.8%
    2. Health Professions110.5%
    3. Nursing20.1%
    4. Dentistry10.0%
    5. Veterinary10.0%
    1. Biochemistry, Genetics and Molecular Biology462.2%
    2. Agricultural and Biological Sciences120.6%
    3. Neuroscience120.6%
    4. Immunology and Microbiology40.2%
    5. Pharmacology, Toxicology and Pharmaceutics20.1%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Hitachi (Japan) specialise in?

Where its research is concentrated relative to its size: Surfaces, Coatings and Films takes 13.6× the share of its output that it takes of world research.

  1. Surfaces, Coatings and FilmsSubfield · 28.6 works14×
  2. Industrial and Manufacturing EngineeringSubfield · 70.2 works6.4×
  3. Control and Systems EngineeringSubfield · 146.5 works6.3×
  4. Electrical and Electronic EngineeringSubfield · 417.0 works5.5×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.12× its world share, 12 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.41× its world share, 46 worksBiochemistry, Geneti…Immunology and Microbiology: 0.18× its world share, 4 worksImmunology and Micro…Neuroscience: 0.34× its world share, 12 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.30× its world share, 2 worksPharmacology, Toxico…Chemical Engineering: 1.75× its world share, 13 worksChemical EngineeringChemistry: 0.71× its world share, 24 worksChemistryComputer Science: 2.00× its world share, 332 worksComputer ScienceEarth and Planetary Sciences: 0.38× its world share, 13 worksEarth and Planetary …Energy: 1.37× its world share, 27 worksEnergyEngineering: 3.45× its world share, 1,107 worksEngineeringEnvironmental Science: 0.44× its world share, 47 worksEnvironmental ScienceMaterials Science: 2.22× its world share, 166 worksMaterials ScienceMathematics: 0.46× its world share, 12 worksMathematicsPhysics and Astronomy: 2.29× its world share, 109 worksPhysics and AstronomyDentistry: 0.06× its world share, 1 worksDentistryHealth Professions: 0.20× its world share, 12 worksHealth ProfessionsMedicine: 0.20× its world share, 82 worksMedicineNursing: 0.16× its world share, 2 worksNursingVeterinary: 0.18× its world share, 0 worksVeterinaryArts and Humanities: 0.10× its world share, 6 worksArts and HumanitiesBusiness, Management and Accounting: 0.39× its world share, 27 worksBusiness, Management…Decision Sciences: 1.07× its world share, 22 worksDecision SciencesEconomics, Econometrics and Finance: 0.14× its world share, 7 worksEconomics, Econometr…Psychology: 0.32× its world share, 21 worksPsychologySocial Sciences: 0.13× its world share, 36 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Engineering, 3.5×. Every wedge is a field page.

All 26 fields, with their numbers
  1. Engineering3.45×1,107 works
  2. Physics and Astronomy2.29×109 works
  3. Materials Science2.22×166 works
  4. Computer Science2.00×332 works
  5. Chemical Engineering1.75×13 works
  6. Energy1.37×27 works
  7. Decision Sciences1.07×22 works
  8. Chemistry0.71×24 works
  9. Mathematics0.46×12 works
  10. Environmental Science0.44×47 works
  11. Biochemistry, Genetics and Molecular Biology0.41×46 works
  12. Business, Management and Accounting0.39×27 works
  13. Earth and Planetary Sciences0.38×13 works
  14. Neuroscience0.34×12 works
  15. Psychology0.32×21 works
  16. Pharmacology, Toxicology and Pharmaceutics0.30×2 works
  17. Health Professions0.20×12 works
  18. Medicine0.20×82 works
  19. Immunology and Microbiology0.18×4 works
  20. Veterinary0.18×0 works
  21. Nursing0.16×2 works
  22. Economics, Econometrics and Finance0.14×7 works
  23. Social Sciences0.13×36 works
  24. Agricultural and Biological Sciences0.12×12 works
  25. Arts and Humanities0.10×6 works
  26. Dentistry0.06×1 works

Who are the top researchers at Hitachi (Japan)?

Ranked on the quality score, Jun Hayakawa, K. Miura and Daiko Takamatsu lead among researchers whose main affiliation is Hitachi (Japan).

  1. 1 Jun Hayakawa Japan · #643,535 worldwide 4.6k citations · 64 works
  2. 2 K. Miura Japan · #730,605 worldwide 8.3k citations · 100 works
  3. 3 Daiko Takamatsu Japan · #844,586 worldwide 1.5k citations · 67 works
  4. 4 Y. Obuchi Japan · #850,552 worldwide 4.7k citations · 50 works
  5. 5 Yasuhiro Yoshimura Japan · #905,673 worldwide 1.6k citations · 86 works
  6. 6 Atsushi Okuma Japan · #1,347,938 worldwide 574 citations · 16 works
  7. 7 Daichi Azuma Japan · #1,353,335 worldwide 657 citations · 32 works
  8. 8 Tsuyoshi Matsuda Japan · #1,359,469 worldwide 9.1k citations · 278 works
  9. 9 Nobuyuki Osakabe Japan · #1,437,063 worldwide 3.4k citations · 85 works
  10. 10 Hari Singh Nalwa Japan · #1,464,824 worldwide 19k citations · 188 works
All ranked researchers at Hitachi (Japan)

What are the most cited papers from Hitachi (Japan)?

The most cited paper from Hitachi (Japan) is "A perpendicular-anisotropy CoFeB–MgO magnetic tunnel junction" (Shoji Ikeda, K. Miura, Hirotsugu Yamamoto et al., 2010), with 3,645 citations. Next come "New Fe-based soft magnetic alloys composed of ultrafine grain structure" (3,439) and "Antiferromagnetic spintronics" (2,472).

Most cited papers
#PaperReleasedCitations
1 A perpendicular-anisotropy CoFeB–MgO magnetic tunnel junction Shoji Ikeda, K. Miura, Hirotsugu Yamamoto et al. · Nature Materials 11 Jul 2010 3,645
2 New Fe-based soft magnetic alloys composed of ultrafine grain structure Yoshihito Yoshizawa, S Oguma, Kenta Yamauchi · Journal of Applied Physics 15 Nov 1988 3,439
3 Antiferromagnetic spintronics Tomas Jungwirth, X. Martí, P. Wadley et al. · Nature Nanotechnology Open access Mar 2016 2,472
4 Genome-wide association of IL28B with response to pegylated interferon-α and ribavirin therapy for chronic hepatitis C Yasuhito Tanaka et al. · Nature Genetics 13 Sep 2009 2,144
5 Dynamic itemset counting and implication rules for market basket data Sergey Brin, Rajeev Motwani, Jeffrey David Ullman et al. Conference paper 1997 1,965
All 58 most cited papers, with filters and sorting

Which keywords describe research at Hitachi (Japan)?

By fractional works in 2022-now, weighted toward what it does more of than the world: Power Electronics, Deep Learning, Renewable Energy Integration, Smart Grid, Thermal Management, Fault Detection, Machine Learning and Neural Networks.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Deep Learning156▲ 2.1×74 topics
  2. Machine Learning113▲ 1.59×70 topics
  3. Power Electronics98▲ 14×8 topics
  4. Neural Networks84▲ 2.5×33 topics
  5. Renewable Energy73▲ 2.4×35 topics
  6. Smart Grid56▲ 7.3×9 topics
  7. Renewable Energy Integration55▲ 7.8×6 topics
  8. Thermal Management53▲ 7.7×8 topics
  9. Energy Efficiency52▲ 2.6×34 topics
  10. Fault Detection52▲ 18×3 topics
  11. Control Strategies42▲ 14×5 topics
  12. Security42▲ 3.0×16 topics
  13. Failure Analysis42▲ 21×7 topics
  14. Voltage Control37▲ 24×2 topics
  15. Numerical Simulation37▲ 5.9×12 topics
  16. Distributed Generation36▲ 21×3 topics
  17. Electric Vehicles35▲ 5.7×4 topics
  18. Control Systems34▲ 8.8×8 topics
  19. Smart Grid Applications34▲ 12×2 topics
  20. Power Systems33▲ 15×3 topics
  21. X-ray Photoelectron Spectroscopy32▲ 20×2 topics
  22. Energy Storage Systems32▲ 11×2 topics
  23. HVDC Transmission32▲ 30×2 topics
  24. Thermal Analysis31▲ 11×8 topics
  25. Fluid Dynamics30▲ 10×6 topics
  26. Model Predictive Control30▲ 5.5×6 topics
  27. High-Temperature Electronics30▲ 23×2 topics
  28. Reliability29▲ 18×3 topics
  29. Offshore Wind Farms29▲ 21×2 topics
  30. Nanoelectronics28▲ 16×2 topics
  31. Modular Multilevel Converters28▲ 38×1 topic
  32. Voltage Source Converters28▲ 38×1 topic
  33. Electron Inelastic Mean Free Paths27▲ 69×1 topic
  34. Scanning Electron Microscopy27▲ 56×1 topic
  35. Power Devices26▲ 18×2 topics
  36. Finite Element Method26▲ 12×7 topics
  37. Semiconductor Devices26▲ 18×2 topics
  38. Atomic Layer Deposition25▲ 18×1 topic
  39. High-k Dielectrics25▲ 18×1 topic
  40. Material Properties25▲ 12×4 topics

Which research topics does Hitachi (Japan) publish most on?

By volume in 2022-now: HVDC Systems and Fault Protection, Electron and X-Ray Spectroscopy Techniques, Semiconductor materials and devices and Silicon Carbide Semiconductor Technologies.

HVDC Systems and Fault P…28HVDC Systems and Fault Protection: 28 fractional worksElectron and X-Ray Spect…27Electron and X-Ray Spectroscopy Techniques: 27 fractional worksSemiconductor materials and devices: 25 fractional worksSilicon Carbide Semicond…24Silicon Carbide Semiconductor Technologies: 24 fractional worksMicrogrid Control and Op…23Microgrid Control and Optimization: 23 fractional worksEngineering Applied Research: 22 fractional worksAdvanced Battery Technologies Research: 18 fractional worksElectric Motor Design an…17Electric Motor Design and Analysis: 17 fractional worksHigh voltage insulation and dielectric phenomena: 16 fractional worksIndustrial Vision Systems and Defect Detection: 16 fractional works
Electrical and Electronic EngineeringSurfaces, Coatings and FilmsControl and Systems EngineeringCivil and Structural Engineering3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 HVDC Systems and Fault Protection Electrical and Electronic Engineering 28 works
  2. 2 Electron and X-Ray Spectroscopy Techniques Surfaces, Coatings and Films 27 works
  3. 3 Semiconductor materials and devices Electrical and Electronic Engineering 25 works
  4. 4 Silicon Carbide Semiconductor Technologies Electrical and Electronic Engineering 24 works
  5. 5 Microgrid Control and Optimization Control and Systems Engineering 23 works
  6. 6 Engineering Applied Research Civil and Structural Engineering 22 works
  7. 7 Advanced Battery Technologies Research Automotive Engineering 18 works
  8. 8 Electric Motor Design and Analysis Electrical and Electronic Engineering 17 works
  9. 9 High voltage insulation and dielectric phenomena Materials Chemistry 16 works
  10. 10 Industrial Vision Systems and Defect Detection Industrial and Manufacturing Engineering 16 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available26.8%not open73.2%

World: 40% of research is openly available.

with international co-authors11.3%domestic only88.7%

World: 18% is written across borders.

How has Hitachi (Japan)'s research output changed?

Output in 2022-2025 was 16% lower than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Hitachi (Japan) as a percentage of every work published that year, 0.0089% in 2024.

still counting0.050%0.10%0.15%Hitachi (Japan)0.0084% in 202519801990200020102020

Fractional works of Hitachi (Japan) over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Hitachi (Japan)3.4% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 7.1% in 1993.

Other research institutions in Tokyo

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Hitachi (Japan) on Science Explorer

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