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Hitachi Zosen Corporation

USPTO Granted Patents = 278

CIPO Patents = 5

EPO Patents = 81

Trademarks = 3

Forward Citations = 1,369

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518 inventors (with patents filed for the assignee):

Tetsuya Inoue (26 out of 33 patents)

Susumu Hikazudani (26 out of 27 patents)

Hidehiko Maehata (19 out of 19 patents)

4. Hiroaki Arai (17 out of 17 patents)

5. Toshiaki Morii (12 out of 12 patents)

6. Daisuke Tamakoshi (12 out of 12 patents)

7. Hiroyuki Daiku (11 out of 11 patents)

8. Takayasu Yokobayashi (10 out of 10 patents)

9. Yoshitoshi Sekiguchi (10 out of 14 patents)

10. Sadao Araki (9 out of 9 patents)

11. Masanori Tsukahara (9 out of 9 patents)

12. Masayoshi Ichiki (9 out of 15 patents)

13. Hideyuki Fukui (7 out of 8 patents)

14. Naoe Hino (7 out of 7 patents)

15. Chikashi Inazumi (7 out of 7 patents)

Core Competencies:

Carbon Nanotube Twisted Thread

Exhaust Gas Treatment

Ultrasonic Phased Array Detection

All-Solid State Battery

Methane Production

Zeolite Separation Membrane

Eddy Current Flaw Detection

Fuel Cell System

Water Electrolysis Device

Honeycomb Structure

Gas Generation Device

Tunnel Boring Machine

278 patents: Sort by Forward Citations

1. 12139407 - Method for producing carbon nanotube twisted thread, and production apparatus of carbon nanotube twisted thread (2024-11-12),

2. 12123335 - Exhaust gas treatment apparatus, engine system, and exhaust gas treatment method (2024-10-22),

3. 12085550 - Device for testing solubility of drugs in gastrointestinal tract (2024-09-10),

4. 12085538 - Ultrasonic phased array detection device for flaw detection of parallel tubes (2024-09-10),

5. 12055424 - Powder supply apparatus (2024-08-06),

6. 11913124 - Water electrolysis device performance recovery method and water electrolysis device (2024-02-27),

7. 11876172 - All-solid battery and method for producing the same (2024-01-16),

8. 11876171 - All-solid-state battery and production method of the same (2024-01-16),

9. 11848421 - All-solid-state battery and method for manufacturing all-solid-state battery (2023-12-19),

10. 11807590 - Methane production system (2023-11-07),

11. 11799118 - Fuel cell system (2023-10-24),

12. 11784353 - All-solid state secondary cell and production method for the same (2023-10-10),

13. 11666867 - Zeolite separation membrane and production method therefor (2023-06-06),

14. 11512195 - Method for producing filler-resin composite (2022-11-29),

15. 11426760 - Powder film forming method and powder film forming device (2022-08-30),

Hitachi Zosen Corporation is a Japanese engineering company that specializes in energy, environmental systems, industrial machinery, infrastructure, and shipbuilding. Their services range from plant engineering and construction to waste treatment and recycling solutions. With a global presence and a long history of innovation, Hitachi Zosen Corporation continues to contribute to the positive development of society through its advanced technologies and commitment to sustainability.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

278 Patents

#61 in Osaka

#545 in Japan

#3,080 in the World

Hitachi Zosen Corporation

Forward Citations = 1,369

518 inventors:

Tetsuya Inoue (26 out of 33 patents)

Susumu Hikazudani (26 out of 27 patents)

Hidehiko Maehata (19 out of 19 patents)

4. Hiroaki Arai (17 out of 17 patents)

5. Toshiaki Morii (12 out of 12 patents)

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