Oshima Shipbuilding Co., Ltd.

Calculating rank

USPTO Granted Patents = 1

% Expired Patents = 100.0

EPO Patents = 3

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

Tatsuo Takaishi (1 out of 3 patents)

Koji Takasaki (1 out of 1 patent)

Takahiro Nakagawa (10 patents)

4. Keisuke Misawa (6 patents)

5. Shoichi Kitamura (2 patents)

6. Shuji Mizokami (10 patents)

7. Tetsugo Fukuda (1 patent)

8. Munehiko Hinatsu (1 patent)

9. Kazuyoshi Harumi (1 patent)

10. Shinji Nonaka (2 patents)

11. Shigeyuki Shibata (1 patent)

12. Kyoji Murakami (1 patent)

13. Naohiro Hiraoka (0 patent)

14. Inoue Tomoki (0 patent)

15. Watanabe Katsunori (0 patent)

1 patent: Sort by Forward Citations

1. 10583896 - Fuel composition, ship, and automatic fuel composition-switching system (2020-03-10),

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USPTO Data Jan 1 1976 - Oct 27 2026

1 Patents

#14 in Nagasaki

#15,762 in Japan

Nagasaki, Japan

Oshima Shipbuilding Co., Ltd.

Forward Citations = 0

2 inventors:

Tatsuo Takaishi (1 out of 3 patents)

Koji Takasaki (1 out of 1 patent)

Takahiro Nakagawa (10 patents)

4. Keisuke Misawa (6 patents)

5. Shoichi Kitamura (2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Oshima Shipbuilding Co., Ltd.. Retrieved from https://idiyas.com/company/oshima-shipbuilding-company

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]

3 patents (EPO):

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]