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For the Inventor, By the Inventor

Tokyo, Japan

Nitto Kohki Co., Ltd.


USPTO Granted Patents = 323



Trademarks = 25

Forward Citations = 6,044

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147 inventors (with patents filed for the assignee):

goldMedal Toshio Mikiya (63 out of 80 patents)

silverMedal Osamu Asano (20 out of 22 patents)

bronzeMedal Hirosato Takeuchi (19 out of 19 patents)

4.  Michihiro Shoji (16 out of 16 patents)

5.  Kenji Fukuda (15 out of 24 patents)

6.  Reichi Makishima (15 out of 15 patents)

7.  Yasuo Kazama (14 out of 14 patents)

8.  Hiroyuki Kitagawa (13 out of 18 patents)

9.  Katsunobu Kishi (13 out of 13 patents)

10.  Takeya Sasa (13 out of 13 patents)

11.  Haruki Nakao (12 out of 17 patents)

12.  Naoyuki Kotake (12 out of 12 patents)

13.  Keisuke Shimada (11 out of 11 patents)

14.  Yoshikazu Kobayashi (11 out of 23 patents)

15.  Koji Matsumoto (10 out of 119 patents)


Core Competencies:
Pipe Joint Assembly
Pump Technology
Clutch Mechanism
Electric Motor-Driven Tool
Threaded Member Tightening Tool
Check Valve Systems
Pneumatic Massage Apparatus
Fluid Recovery Apparatus
Emergency Detachable Pipe Coupling
Electromagnetic Valve System
Portable Drilling Machine
Vane Air Motor

323 patents:

1. 12498067 - Piping member (2025-12-16),
2. 12422076 - Pipe joint assembly (2025-09-23),
3. 12305633 - Pump (2025-05-20),
4. 12129897 - Clutch mechanism and power tool (2024-10-29),
5. D1036507 - Air pump (2024-07-23),
6. 11873933 - Pipe coupling member (2024-01-16),
7. 11795939 - Pump installation member (2023-10-24),
8. 11761566 - Connecting pipe (2023-09-19),
9. 11701766 - Tool, and control circuit and control method therefor (2023-07-18),
10. 11530768 - Pipe coupling having valve element and coil spring for use therein (2022-12-20),
11. 11486373 - Pump (2022-11-01),
12. D962294 - Air pump (2022-08-30),
13. D946626 - Pump (2022-03-22),
14. 11118717 - Male coupling member (2021-09-14),
15. 11105453 - Pipe coupling member having valve element and coil spring for use therein (2021-08-31),
NITTO KOHKI CO., LTD. is a global leader in the manufacturing and distribution of high-quality pneumatic products and hydraulic equipment. With over six decades of experience, the company offers a wide range of innovative tools and solutions for various industries. NITTO KOHKI's product lineup includes air compressors, couplings, vacuum pumps, hydraulic pumps, and electric power tools. The company is committed to providing reliable and efficient products that meet the highest standards of performance and safety. Visit their website for more information.
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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323 Patents

#231 in Tokyo

#497 in Japan

#2,700 in the World

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Tokyo, Japan

Nitto Kohki Co., Ltd.

Forward Citations = 6,044

147 inventors:

goldMedal Toshio Mikiya (63 out of 80 patents)

silverMedal Osamu Asano (20 out of 22 patents)

bronzeMedal Hirosato Takeuchi (19 out of 19 patents)

4.  Michihiro Shoji (16 out of 16 patents)

5.  Kenji Fukuda (15 out of 24 patents)

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