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Shizuoka, Japan

Fuji Oozx Inc.

USPTO Granted Patents = 68

% Expired Patents = 13.2

Trademarks = 1

Forward Citations = 313

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37 inventors (with patents filed for the assignee):

Akiyoshi Mori (13 out of 15 patents)

Nobuo Hara (13 out of 13 patents)

Tatsuo Kanzaki (10 out of 11 patents)

4. Hiroaki Asanuma (9 out of 9 patents)

5. Masahito Hirose (8 out of 8 patents)

6. Haruki Kobayashi (8 out of 8 patents)

7. Makoto Abe (7 out of 27 patents)

8. Kizuku Ohtsubo (7 out of 7 patents)

9. Akihiro Hamada (6 out of 6 patents)

10. Takeshi Sassa (5 out of 5 patents)

11. Takeji Kenmoku (5 out of 5 patents)

12. Shinichi Umino (5 out of 5 patents)

13. Satoshi Fukuoka (4 out of 5 patents)

14. Makoto Adegawa (3 out of 3 patents)

15. Toshimitsu Shida (3 out of 7 patents)

Core Competencies:

Internal Combustion Engine

Valve Mechanism

Tappet Manufacturing

Titanium Alloys

Poppet Valve

Valve Spring Retainer

Friction Welding

Electric Valve Drive

Wear Resistant Tappet

Surface Treatment

Heat Transfer

Exhaust Gas Control

68 patents: Sort by Forward Citations

1. 11982212 - Hollow engine valve and production method thereof (2024-05-14),

2. 8899200 - Valve spring retainer for an internal combustion engine and a method of manufacturing the same (2014-12-02),

3. 6691910 - Method of joining different metal materials by friction welding (2004-02-17),

4. 6623568 - Ti alloy poppet valve and a method of manufacturing the same (2003-09-23),

5. 6619251 - Tappet for an internal combustion engine (2003-09-16),

6. 6592683 - Ti alloy surface treatment (2003-07-15),

7. 6564773 - Multi-valve engine (2003-05-20),

8. 6511045 - Ti alloy poppet valve and a method of manufacturing the same (2003-01-28),

9. 6382246 - Valve position detector (2002-05-07),

10. 6354001 - Method of manufacturing a Ti alloy poppet value (2002-03-12),

11. 6341588 - Valve spring retainer and a valve operating mechanism (2002-01-29),

12. 6338325 - Valve operating mechanism of an internal combustion engine (2002-01-15),

13. 6311661 - Valve spring retainer and a valve operating mechanism (2001-11-06),

14. 6295731 - Method of hardening a valve face of a poppet valve (2001-10-02),

15. 6293303 - Valve position detector (2001-09-25),

Company Overview

Fuji Oozx Inc., headquartered in Shizuoka, Japan, specializes in the development and manufacturing of advanced components for internal combustion engines. The company focuses on critical technologies such as valve mechanisms, tappet manufacturing, and the use of titanium alloys in automotive applications. With expertise in friction welding and electric valve drive systems, Fuji Oozx is positioned at the forefront of innovation in engine performance and efficiency, contributing significantly to the automotive engineering landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

68 Patents

#23 in Shizuoka

#1,431 in Japan

#10,880 in the World

Shizuoka, Japan

Fuji Oozx Inc.

Forward Citations = 313

37 inventors:

Akiyoshi Mori (13 out of 15 patents)

Nobuo Hara (13 out of 13 patents)

Tatsuo Kanzaki (10 out of 11 patents)

4. Hiroaki Asanuma (9 out of 9 patents)

5. Masahito Hirose (8 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fuji Oozx Inc.. Retrieved from https://idiyas.com/company/fuji-oozx

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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