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Yokohama, Japan

Kato Hatsujo Kaisha, Ltd.

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USPTO Granted Patents = 47

Forward Citations = 1,358

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45 inventors (with patents filed for the assignee):

Masahiro Aihara (4 out of 8 patents)

Seiichi Sato (4 out of 10 patents)

Ichizo Ohkata (4 out of 5 patents)

4. Yasuo Takahashi (4 out of 15 patents)

5. Toshinari Hojima (3 out of 4 patents)

6. Kazunori Asano (3 out of 3 patents)

7. Masakazu Miyoshi (3 out of 4 patents)

8. Hiroyuki Suzuki (3 out of 55 patents)

9. Nobuya Shinozaki (3 out of 3 patents)

10. Hiroyuki Aida (3 out of 4 patents)

11. Tatsuhiko Matsui (3 out of 4 patents)

12. Satoshi Yamada (3 out of 37 patents)

13. Akira Watanabe (2 out of 59 patents)

14. Yasuyuki Ogawa (2 out of 36 patents)

15. Tomoyoshi Ohnuki (2 out of 6 patents)

Core Competencies:

Fuel Check Valve

Lid Opening Device

Hose Clamp

Medical Liquid Injector

Rotary Oil Damper

Shock Absorber

Fastener Assembly

Fiber-Reinforced Resin

Draining Mechanism

Security Fastener

Automobile Console Box

Cap Fitting Structure

47 patents: Sort by Forward Citations

1. 5601261 - Band clip (1997-02-11),

2. 5388901 - Storage device furnished with safety function (1995-02-14),

3. 5386636 - Storage device furnished with safety function (1995-02-07),

4. 5357652 - Lid opening/closing apparatus (1994-10-25),

5. 5277282 - Rotary oil damper (1994-01-11),

6. 5277217 - Fuel interrupt/pressure release valve arrangement for fuel tank (1994-01-11),

7. 5263346 - Locking device for lid (1993-11-23),

8. 5212849 - Device for opening and shutting lid (1993-05-25),

9. 5210906 - Releasable double-hinge device for an automobile console box (1993-05-18),

10. 5209016 - Apparatus for opening and shutting a lid (1993-05-11),

11. 5195272 - Lid switching device (1993-03-23),

12. 5178609 - Medical liquid injector for continuous transfusion (1993-01-12),

13. 5173992 - Releasable double-hinge device for an automobile console box (1992-12-29),

14. 5172999 - Fixing bracket for flexible tube (1992-12-22),

15. 5172714 - Fuel check valve assembly for fuel tank (1992-12-22),

Company Overview

Kato Hatsujo Kaisha, Ltd., based in Yokohama, Japan, specializes in the development and manufacturing of a diverse range of mechanical components and devices. The company focuses on innovative solutions in storage devices, lid opening apparatus, rotary oil dampers, and fuel check valves, catering to various industries including automotive and medical sectors. Their expertise extends to producing medical liquid injectors, hose clamps, automobile console boxes, and shock absorbers, reflecting a commitment to quality and technological advancement.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

47 Patents

#36 in Yokohama

#1,786 in Japan

#14,854 in the World

Yokohama, Japan

Kato Hatsujo Kaisha, Ltd.

Forward Citations = 1,358

45 inventors:

Masahiro Aihara (4 out of 8 patents)

Seiichi Sato (4 out of 10 patents)

Ichizo Ohkata (4 out of 5 patents)

4. Yasuo Takahashi (4 out of 15 patents)

5. Toshinari Hojima (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kato Hatsujo Kaisha, Ltd.. Retrieved from https://idiyas.com/company/kato-hatsujo-kaisha

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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