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For the Inventor, By the Inventor

Kanagawa, Japan

Yamashin-Filter Corp.

Calculating rank
USPTO Granted Patents = 40

% Expired Patents = 7.5


Trademarks = 7

Forward Citations = 30

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24 inventors (with patents filed for the assignee):

goldMedal Nobuyuki Kitajima (19 out of 19 patents)

silverMedal Mitsunobu Okamoto (9 out of 9 patents)

bronzeMedal 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)


Core Competencies:
Filter Device
Filtration Device
Differential Pressure Detection
Measurement Unit
Suction Strainer
Filter Element
Tank Device
Fine Fiber Producing
Return Filter
Work Vehicle
Strainer
Liquid Filtration

40 patents:

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),
Company Overview
Yamashin-Filter Corp., based in Kanagawa, Japan, specializes in the development and manufacturing of advanced filtration devices and systems. The company focuses on innovative solutions for differential pressure detection, filter life prediction, and measurement units, catering to various industrial applications. With a commitment to enhancing filtration efficiency and reliability, Yamashin-Filter plays a crucial role in providing high-quality filter elements and suction strainers, contributing to improved operational performance across multiple sectors.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

40 Patents

#70 in Kanagawa

#1,981 in Japan

#17,098 in the World

Kanagawa, JP
Kanagawa, Japan

Yamashin-Filter Corp.

Forward Citations = 30

24 inventors:

goldMedal Nobuyuki Kitajima (19 out of 19 patents)

silverMedal Mitsunobu Okamoto (9 out of 9 patents)

bronzeMedal Nobuki Sasaki (8 out of 8 patents)

4.  Makoto Ishizuka (7 out of 7 patents)

5.  Mitsuhiro Yamaguchi (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yamashin-Filter Corp.. Retrieved from https://idiyas.com/company/yamashin-filter

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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