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Hiroshima, Japan

Gp Daikyo Corporation

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USPTO Granted Patents = 17

% Expired Patents = 58.8

Forward Citations = 141

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31 inventors (with patents filed for the assignee):

Yoshihiro Takemoto (7 out of 10 patents)

Takahiro Tochioka (3 out of 22 patents)

Yutaka Miyahara (3 out of 4 patents)

4. Issei Harima (3 out of 5 patents)

5. Yoshifumi Iwata (3 out of 5 patents)

6. Yasumi Mototani (3 out of 3 patents)

7. Nobuyuki Homi (3 out of 6 patents)

8. Masaharu Okamura (2 out of 6 patents)

9. Chie Fukuhara (2 out of 3 patents)

10. Mitsuharu Kaneko (2 out of 6 patents)

11. Fumiya Mouri (2 out of 2 patents)

12. Takanobu Kamura (2 out of 9 patents)

13. Toshiki Miyachi (2 out of 4 patents)

14. Shoso Nishida (1 out of 29 patents)

15. Yoshihiro Akiyama (1 out of 10 patents)

17 patents: Sort by Forward Citations

1. 7182382 - Resin-made floor panel structure (2007-02-27),

2. 7131415 - Resin intake manifold for multicylinder engine (2006-11-07),

3. 7111894 - Automobile door structure (2006-09-26),

4. 6981860 - Apparatus for manufacturing synthetic resin hollow member incorporating an intermediate element therein (2006-01-03),

5. 6966592 - Resin-made floor panel structure (2005-11-22),

6. 6860526 - Coupling structure for a hollow body (2005-03-01),

7. 6814860 - Oil strainer (2004-11-09),

8. 6805398 - Structure of tail gate (2004-10-19),

9. 6793761 - Method of manufacturing oil strainer (2004-09-21),

10. 6782862 - Resin intake manifolds and manufacturing process thereof (2004-08-31),

11. 6604500 - Resin intake manifolds and manufacturing process thereof (2003-08-12),

12. 6571759 - Resin intake manifolds and manufacturing process thereof (2003-06-03),

13. 6494510 - Impact absorbing mechanism and bumper reinforcement having the mechanism (2002-12-17),

14. 6428730 - Method for manufacturing synthetic resin-made hollow member with intermediate element incorporated therein, and apparatus therefor (2002-08-06),

15. 6428699 - Oil strainer (2002-08-06),

Company Overview

Gp Daikyo Corporation, based in Hiroshima, Japan, specializes in the development and manufacturing of advanced materials and components for various industries. The company focuses on innovative solutions that enhance product performance and sustainability. With a strong emphasis on research and development, Gp Daikyo is involved in cutting-edge technology domains, including automotive and electronics, contributing to advancements in efficiency and functionality across its product offerings.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

17 Patents

#29 in Hiroshima, 729-3431

#3,231 in Japan

#35,974 in the World

Hiroshima, Japan

Gp Daikyo Corporation

Forward Citations = 141

31 inventors:

Yoshihiro Takemoto (7 out of 10 patents)

Takahiro Tochioka (3 out of 22 patents)

Yutaka Miyahara (3 out of 4 patents)

4. Issei Harima (3 out of 5 patents)

5. Yoshifumi Iwata (3 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gp Daikyo Corporation. Retrieved from https://idiyas.com/company/gp-daikyo

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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