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For the Inventor, By the Inventor

San Ramon, CA, United States of America

Chevron Japan Limited


USPTO Granted Patents = 20



Forward Citations = 8

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34 inventors (with patents filed for the assignee):

goldMedal Koichi Kubo (6 out of 75 patents)

silverMedal Masami Fuchi (5 out of 5 patents)

bronzeMedal Takahiro Nakagawa (4 out of 9 patents)

4.  Hiroyuki Nagamatsu (4 out of 5 patents)

5.  Yoshitaka Takeuchi (2 out of 29 patents)

6.  Isao Tanaka (2 out of 3 patents)

7.  Taiki Hattori (2 out of 2 patents)

8.  Nobuo Ushioda (2 out of 2 patents)

9.  Morikuni Nakazato (2 out of 6 patents)

10.  Yasuhiro Ogasawara (2 out of 2 patents)

11.  Satoshi Ohta (2 out of 5 patents)

12.  Hiroki Andoh (2 out of 6 patents)

13.  William R Ruhe, Jr (2 out of 49 patents)

14.  Naoya Sasaki (2 out of 4 patents)

15.  Hisanari Onouchi (1 out of 5 patents)


20 patents:

1. 12448583 - Lubricating oil composition (2025-10-21),
2. 12391898 - Friction modifier system (2025-08-19),
3. 12384981 - Lubricating oil composition for hybrid vehicles (2025-08-12),
4. 12331260 - Ashless additive composition (2025-06-17),
5. 12291686 - Lubricating oil compositions for automatic transmissions (2025-05-06),
6. 11214754 - Low viscosity lubricating oil composition (2022-01-04),
7. 11193084 - Low viscosity lubricating oil compositions (2021-12-07),
8. 10669507 - Fuel economy engine oil composition (2020-06-02),
9. 10604719 - Lubricating oils for automatic transmissions (2020-03-31),
10. 9499765 - Lubricating oil compositions for construction machines (2016-11-22),
11. 9102896 - Fuel economical lubricating oil composition for internal combustion engines (2015-08-11),
12. 8926763 - Method for cleaning internal parts of gasoline engines (2015-01-06),
13. 8784642 - Lubricating oil composition for lubricating automotive engines (2014-07-22),
14. 8703677 - Lubricating oil compositions for internal combustion engines (2014-04-22),
15. 8497232 - Friction modifier and transmission oil (2013-07-30),
Chevron Japan Limited is a Japanese subsidiary of Chevron Corporation, one of the world's largest integrated energy companies. It is involved in various activities such as exploration, production, refining, and marketing of oil and gas products. With a strong emphasis on safety, environmental stewardship, and social responsibility, Chevron Japan Limited strives to deliver reliable energy solutions while contributing to the sustainable development of Japan's energy sector.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

20 Patents

#14 in San Ramon, CA

#3,805 in California

#15,857 in US

#30,327 in the World

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San Ramon, CA, United States of America

Chevron Japan Limited

Forward Citations = 8

34 inventors:

goldMedal Koichi Kubo (6 out of 75 patents)

silverMedal Masami Fuchi (5 out of 5 patents)

bronzeMedal Takahiro Nakagawa (4 out of 9 patents)

4.  Hiroyuki Nagamatsu (4 out of 5 patents)

5.  Yoshitaka Takeuchi (2 out of 29 patents)

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