For the Inventor, By the Inventor

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Kanagawa, Japan

Yamashin-filter Corp.

USPTO Granted Patents = 40

EPO Patents = 26

Trademarks = 9

Forward Citations = 30

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47 inventors (with patents filed for the assignee):

Nobuyuki Kitajima (19 out of 19 patents)

Mitsunobu Okamoto (9 out of 9 patents)

Nobuki Sasaki (8 out of 8 patents)

4. Makoto Ishizuka (7 out of 7 patents)

5. Mitsuhiro Yamaguchi (4 out of 5 patents)

6. Masanori Wakabayashi (4 out of 4 patents)

7. Meiho Taku (4 out of 4 patents)

8. Tatsuhiro Oshita (4 out of 4 patents)

9. Youichi Nodomi (3 out of 3 patents)

10. Hideo Nakaoka (3 out of 3 patents)

11. Akiyoshi Komine (3 out of 3 patents)

12. Takazumi Tange (2 out of 2 patents)

13. Yoshinori Tsurusaki (2 out of 2 patents)

14. Jiro Inoue (2 out of 2 patents)

15. Shinya Hirose (2 out of 2 patents)

40 patents: Sort by Forward Citations

1. 12233358 - Filter device (2025-02-25),

2. 12214306 - Filter device (2025-02-04),

3. 12194397 - Measurement unit and filter device (2025-01-14),

4. 12145084 - Filter element and filter device (2024-11-19),

5. 12129879 - Suction strainer (2024-10-29),

6. 12025526 - Differential pressure detection device (2024-07-02),

7. 12025085 - Tank device (2024-07-02),

8. 11951426 - Filter device (2024-04-09),

9. 11850538 - Filter life predicting apparatus (2023-12-26),

10. 11714016 - Differential pressure detection device (2023-08-01),

11. 11712643 - Filtration device (2023-08-01),

12. 11602705 - Filtration device (2023-03-14),

13. 11541338 - Filter device (2023-01-03),

14. 11511934 - Tank device (2022-11-29),

15. 11504661 - Filter device (2022-11-22),

YAMASHIN-FILTER CORP. is a leading company in the field of industrial filters, offering innovative solutions for various industries. With over 50 years of experience, we provide high-quality filters that meet the strictest standards of performance and reliability. Our products range from liquid filters to air filters, catering to diverse applications such as oil, gas, automotive, and many more. Visit our website to explore our extensive product catalog and discover how our cutting-edge filtration technology can enhance your operations.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

40 Patents

#63 in Kanagawa

#1,932 in Japan

#16,532 in the World

Kanagawa, Japan

Yamashin-filter Corp.

Forward Citations = 30

47 inventors:

Nobuyuki Kitajima (19 out of 19 patents)

Mitsunobu Okamoto (9 out of 9 patents)

Nobuki Sasaki (8 out of 8 patents)

4. Makoto Ishizuka (7 out of 7 patents)

5. Mitsuhiro Yamaguchi (4 out of 5 patents)

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