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Shizuoka, Japan

Usui Co., Ltd.

USPTO Granted Patents = 28

% Expired Patents = 10.7

EPO Patents = 22

Trademarks = 1

Forward Citations = 14

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34 inventors (with patents filed for the assignee):

Shuji Suzuki (6 out of 7 patents)

Tetsunobu Suzuki (5 out of 6 patents)

Hidetaka Ito (5 out of 10 patents)

4. Tatsuya Masuda (4 out of 9 patents)

5. Taizo Makino (4 out of 12 patents)

6. Masahiro Yamazaki (3 out of 66 patents)

7. Hiroyuki Nishizawa (3 out of 8 patents)

8. Koichi Hayashi (3 out of 13 patents)

9. Osamu Endo (2 out of 15 patents)

10. Tsugumi Yamazaki (2 out of 2 patents)

11. Hiroaki Kondo (2 out of 2 patents)

12. Katsunori Nagao (2 out of 4 patents)

13. Yuji Arai (2 out of 203 patents)

14. Yoshiyuki Serizawa (2 out of 13 patents)

15. Kazuma Hinobayashi (2 out of 2 patents)

28 patents: Sort by Forward Citations

1. 12460275 - Steel pipe for fuel injection pipe, and fuel injection pipe using same (2025-11-04),

2. 12305597 - Steel pipe for fuel injection pipe, and fuel injection pipe using same (2025-05-20),

3. 12000364 - Steel pipe for fuel injection pipe and fuel injection pipe using the same (2024-06-04),

4. D1016250 - Branch pipe (2024-02-27),

5. 11754027 - Gasoline direct injection rail (2023-09-12),

6. D987687 - Fuel rail (2023-05-30),

7. D987686 - Injector holder of fuel rail for gasoline direct-injection engine (2023-05-30),

8. 11585304 - Rail for high-pressure direct injection (2023-02-21),

9. 11421630 - Gas-liquid separator (2022-08-23),

10. 11313330 - Gas-liquid separator (2022-04-26),

11. 11203793 - Steel pipe for fuel injection pipe and method for producing the same (2021-12-21),

12. 11179662 - Gas-liquid separator (2021-11-23),

13. 11156194 - End cap (2021-10-26),

14. 11015231 - Method of manufacturing fuel rail for gasoline direct injection (2021-05-25),

15. 10961960 - Rail for high-pressure direct injection (2021-03-30),

Usui Co., Ltd. is a prominent Japanese company based in Shizuoka, specializing in the development and manufacturing of precision components and systems for various industries. The company focuses on automotive parts, electronic devices, and industrial machinery, leveraging advanced technologies to enhance product performance and reliability. With a commitment to innovation, Usui engages in research and development to create solutions that meet the evolving needs of its global clientele, contributing to advancements in manufacturing and engineering sectors.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

28 Patents

#35 in Shizuoka

#2,411 in Japan

#23,244 in the World

Shizuoka, Japan

Usui Co., Ltd.

Forward Citations = 14

34 inventors:

Shuji Suzuki (6 out of 7 patents)

Tetsunobu Suzuki (5 out of 6 patents)

Hidetaka Ito (5 out of 10 patents)

4. Tatsuya Masuda (4 out of 9 patents)

5. Taizo Makino (4 out of 12 patents)

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