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Tohnichi Mfg. Co., Ltd.

USPTO Granted Patents = 14

EPO Patents = 13

Trademarks = 3

Forward Citations = 98

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18 inventors (with patents filed for the assignee):

Seiji Ito (8 out of 16 patents)

Tomohiro Ogata (7 out of 7 patents)

Kyoichi Komatsu (7 out of 7 patents)

4. Hiroshi Tsuji (6 out of 51 patents)

5. Osamu Tsuji (3 out of 3 patents)

6. Tetsuya Yokoyama (3 out of 9 patents)

7. Yasuhiro Yamamoto (2 out of 122 patents)

8. Nobuyoshi Kobayashi (2 out of 39 patents)

9. Satoshi Takaku (2 out of 2 patents)

10. Naoya Masuda (2 out of 2 patents)

11. Shozo Aikawa (2 out of 2 patents)

12. Shinji Murayama (1 out of 1 patent)

13. Yoshiro Kanda (1 out of 1 patent)

14. Koichi Shimura (1 out of 1 patent)

15. Sinji Murayama (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 11819964 - Nut and bolt tightening method and tightening device (2023-11-21),

2. 11772213 - Tightening device (2023-10-03),

3. 11660713 - Fastening device (2023-05-30),

4. 11364580 - Fastening device (2022-06-21),

5. 10850376 - Tensioning device (2020-12-01),

6. 10828759 - Tensioning device (2020-11-10),

7. 10794416 - Tensioning device (2020-10-06),

8. 9956673 - Tightening tool (2018-05-01),

9. 9770816 - Angle wrench and rotation angle-measuring device (2017-09-26),

10. 9199364 - Torque driver (2015-12-01),

11. 9021921 - Torque wrench (2015-05-05),

12. 8485049 - Torque tool device (2013-07-16),

13. 8443702 - Torque wrench (2013-05-21),

14. 6698298 - Torque wrench for further tightening inspection (2004-03-02),

TOHNICHI MFG. CO., LTD. is a leading manufacturer of torque tools, torque meters, and torque-related equipment. With over 85 years of experience, the company specializes in providing high-quality torque solutions for various industries including automotive, manufacturing, and construction. TOHNICHI tools are known for their precision, durability, and innovative designs. The company's commitment to customer satisfaction and continuous improvement has made them a trusted partner for businesses worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

14 Patents

#1,397 in Tokyo

#3,493 in Japan

#40,935 in the World

Tohnichi Mfg. Co., Ltd.

Forward Citations = 98

18 inventors:

Seiji Ito (8 out of 16 patents)

Tomohiro Ogata (7 out of 7 patents)

Kyoichi Komatsu (7 out of 7 patents)

4. Hiroshi Tsuji (6 out of 51 patents)

5. Osamu Tsuji (3 out of 3 patents)

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