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For the Inventor, By the Inventor

Koto-ku, Japan

Ihi Corporation


USPTO Granted Patents = 1,142



Trademarks = 14

Forward Citations = 1,975

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1,185 inventors (with patents filed for the assignee):

goldMedal Motonao Niizuma (50 out of 51 patents)

silverMedal Naomichi Omori (34 out of 34 patents)

bronzeMedal Yutaka Uneura (29 out of 29 patents)

4.  Kazuhiko Katsumata (29 out of 31 patents)

5.  Kenji Nishimura (26 out of 28 patents)

6.  Susumu Tokura (25 out of 25 patents)

7.  Toshiyuki Suda (25 out of 26 patents)

8.  Jun Araki (23 out of 35 patents)

9.  Ryota Sakisaka (22 out of 24 patents)

10.  Toshiro Fujimori (20 out of 25 patents)

11.  Haruki Eguchi (20 out of 29 patents)

12.  Mitsutoshi Watanabe (18 out of 39 patents)

13.  Shintaro Ito (17 out of 51 patents)

14.  Soichiro Kato (17 out of 18 patents)

15.  Kuniaki Iizuka (17 out of 21 patents)


Core Competencies:
Spool Valve
Fiber-Reinforced Material
Power Regulation
Contactless Power Supply
Laser Welding
Gas Turbine System
Anomaly Detection
Centrifugal Compressor
Turbocharger
Energy Recovery
Three-Dimensional Manufacturing
Titanium Aluminide Alloy

1,142 patents:

1. 12498046 - Spool valve (2025-12-16),
2. 12491892 - Coupling angle detection device for combination vehicle, combination vehicle, and coupling angle detection method for combination vehicle (2025-12-09),
3. 12476463 - Power system adjusting device and power system adjusting program (2025-11-18),
4. 12474724 - Spool valve (2025-11-18),
5. 12472706 - Identification device, identification method, and identification program for identifying fiber layer in fiber-reinforced material (2025-11-18),
6. 12463424 - Power regulation method and power regulation device (2025-11-04),
7. 12459378 - Coil device, and contactless power supply system (2025-11-04),
8. 12459057 - Repairing laser welding method and repairing laser welding device (2025-11-04),
9. 12456574 - Coil device (2025-10-28),
10. 12444948 - Demand and supply planning method and demand and supply planning apparatus (2025-10-14),
11. 12441474 - Energy recovery device for aircraft (2025-10-14),
12. 12429225 - Gas turbine system (2025-09-30),
13. 12427861 - Detection method of loading anomaly on vehicle, and detection apparatus thereof (2025-09-30),
14. 12422254 - Thickness measurement device and thickness measurement method (2025-09-23),
15. 12415160 - Carbon dioxide recovery system (2025-09-16),
IHI Corporation is a global provider of comprehensive industrial solutions. With over a century of experience, the company operates in various sectors including aerospace, power systems, industrial machinery, social infrastructure, and more. IHI Corporation strives to contribute to the development of a sustainable society through innovative technologies and engineering expertise.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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1,142 Patents

#1 in Koto-ku

#197 in Japan

#878 in the World

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Koto-ku, Japan

Ihi Corporation

Forward Citations = 1,975

1,185 inventors:

goldMedal Motonao Niizuma (50 out of 51 patents)

silverMedal Naomichi Omori (34 out of 34 patents)

bronzeMedal Yutaka Uneura (29 out of 29 patents)

4.  Kazuhiko Katsumata (29 out of 31 patents)

5.  Kenji Nishimura (26 out of 28 patents)

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