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For the Inventor, By the Inventor

Tokyo, Japan

Meidensha Corporation


USPTO Granted Patents = 303



Trademarks = 5

Forward Citations = 738

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297 inventors (with patents filed for the assignee):

goldMedal Takao Akiyama (31 out of 38 patents)

silverMedal Toshimichi Takahashi (20 out of 21 patents)

bronzeMedal Nobuo Okazaki (15 out of 16 patents)

4.  Yugo Tadano (15 out of 15 patents)

5.  Takashi Yamaguchi (14 out of 88 patents)

6.  Akihiko Kodama (13 out of 13 patents)

7.  Toshinori Miura (11 out of 12 patents)

8.  Shota Hayashi (11 out of 11 patents)

9.  Keita Ishikawa (11 out of 28 patents)

10.  Kosuke Hasegawa (10 out of 10 patents)

11.  Kaoru Kitakizaki (10 out of 11 patents)

12.  Kazunobu Oi (10 out of 10 patents)

13.  Toshimasa Fukai (9 out of 20 patents)

14.  Yuji Ogawa (9 out of 35 patents)

15.  Masayasu Kanke (9 out of 11 patents)


Core Competencies:
Rotating Electrical Machine
Vehicle Speed Control Device
Power Conversion Device
Dynamometer System
Vacuum Interrupter
Filtration Membrane Unit
Motor Cooling System
Field Emission Device
Bubble Generation Device
Elevator Rope Monitoring Device
Chassis Dynamometer System
Vehicle Inspection Device

303 patents:

1. 12463497 - Rotating electrical machine (2025-11-04),
2. 12451755 - Rotary electric machine with stator and oil injection port (2025-10-21),
3. 12442702 - Dynamometer system (2025-10-14),
4. 12442427 - Reverse force mechanism (2025-10-14),
5. 12441182 - Vehicle speed control device and driver model processing device (2025-10-14),
6. 12440811 - Bubble generation device and liquid filtration device (2025-10-14),
7. 12425021 - Gate drive circuit of power converter (2025-09-23),
8. 12415760 - Zinc oxide element (2025-09-16),
9. 12412706 - Vacuum capacitor (2025-09-09),
10. 12409419 - Bubble generation device and liquid filtration device (2025-09-09),
11. 12362115 - Vacuum interrupter (2025-07-15),
12. 12359991 - Testing system (2025-07-15),
13. D1077980 - Water collecting pipe for filtering device (2025-06-03),
14. 12311319 - Filtration membrane unit, holder holding same, filtration system including filtration membrane unit and holder, and filtration treatment apparatus including plurality of filtration systems (2025-05-27),
15. 12291278 - Jacking point structure (2025-05-06),
MEIDENSHA CORPORATION is a Japanese electrical engineering company that specializes in the manufacturing and distribution of electrical products and systems. With a history dating back to 1897, the company offers a wide range of products including power generation and transmission equipment, industrial machinery, and social infrastructure systems. MEIDENSHA also provides various engineering services and solutions to cater to the diverse needs of its clients. For more information about the company and its offerings, please visit their official website.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

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303 Patents

#247 in Tokyo

#524 in Japan

#2,857 in the World

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Tokyo, Japan

Meidensha Corporation

Forward Citations = 738

297 inventors:

goldMedal Takao Akiyama (31 out of 38 patents)

silverMedal Toshimichi Takahashi (20 out of 21 patents)

bronzeMedal Nobuo Okazaki (15 out of 16 patents)

4.  Yugo Tadano (15 out of 15 patents)

5.  Takashi Yamaguchi (14 out of 88 patents)

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