% Expired Patents = 50.0

Forward Citations = 17

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11 inventors (with patents filed for the assignee):

Makoto Yokota (2 out of 3 patents)

Akitoshi Kojima (2 out of 2 patents)

Naoyuki Fukui (1 out of 12 patents)

4. Atsushi Yamazumi (1 out of 7 patents)

5. Tomohiro Saeki (1 out of 37 patents)

6. Yasuhiro Kodama (1 out of 7 patents)

7. Chihiro Hayashi (1 out of 4 patents)

8. Yuki Miyamoto (1 out of 5 patents)

9. Daiichiro Nakano (1 out of 1 patent)

10. Takashi Murate (1 out of 1 patent)

11. Yasuhiko Tsuda (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 9004332 - Cup holder (2015-04-14),

2. 8663021 - Torque fluctuation absorber (2014-03-04),

3. 8036906 - Method and system for merchandise retail management and portable terminal (2011-10-11),

4. 7673328 - Network authentication system using individual services providers and an authentication server (2010-03-02),

Company Overview

Kojima Co., Ltd. is a leading electronics and home appliance retailer in Japan. Established in 1967, the company has a strong presence in the market with a wide range of products such as TVs, refrigerators, washing machines, and more. Kojima Co., Ltd. is known for its competitive pricing, excellent customer service, and strategic partnerships with top brands. With over 50 years of experience, Kojima Co., Ltd. continues to innovate and provide quality products to its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#172 in Aichi

#7,579 in Japan

Aichi, Japan

Kojima Co., Ltd.

Forward Citations = 17

11 inventors:

Makoto Yokota (2 out of 3 patents)

Akitoshi Kojima (2 out of 2 patents)

Naoyuki Fukui (1 out of 12 patents)

4. Atsushi Yamazumi (1 out of 7 patents)

5. Tomohiro Saeki (1 out of 37 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kojima Co., Ltd.. Retrieved from https://idiyas.com/company/kojima-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]