% Expired Patents = 14.3

Forward Citations = 34

Loading Chart...

13 inventors (with patents filed for the assignee):

Goro Nakatani (1 out of 60 patents)

Kazuo Kohmura (1 out of 39 patents)

Hirofumi Tanaka (1 out of 17 patents)

4. Yoshihiro Ikefuji (1 out of 40 patents)

5. Kyoji Marumoto (1 out of 14 patents)

6. Ryotaro Yagi (1 out of 9 patents)

7. Yoshinori Shishida (1 out of 8 patents)

8. Shinichi Chikaki (1 out of 9 patents)

9. Masahito Kondo (1 out of 7 patents)

10. Tsuyoshi Tsutsui (1 out of 19 patents)

11. Eizi Yokoyama (1 out of 2 patents)

12. Shigeki Kurihara (1 out of 1 patent)

13. Mitsuru Koiwa (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 8384208 - Semiconductor device and method of fabricating the same (2013-02-26),

2. 6794732 - Semiconductor device and method of manufacturing the same (2004-09-21),

3. 6663400 - Wiring board having connector and method of manufacturing the same (2003-12-16),

4. 6506968 - Sound source device (2003-01-14),

5. 6248607 - Method for manufacturing semiconductor light emitting device (2001-06-19),

6. 6226042 - Color encoder (2001-05-01),

7. 4628249 - Power supply having a predetermined value of input impedance (1986-12-09),

Company Overview

Rohn Co., Ltd. is a leading manufacturer of high-quality industrial equipment. With over 20 years of experience in the industry, we specialize in producing innovative solutions for a wide range of applications. Our products are known for their durability, reliability, and superior performance. We are committed to providing our customers with top-notch products and excellent customer service.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#141 in Kyoto 615-0031

#5,459 in Japan

Kyoto, Japan

Rohn Co., Ltd.

Forward Citations = 34

13 inventors:

Goro Nakatani (1 out of 60 patents)

Kazuo Kohmura (1 out of 39 patents)

Hirofumi Tanaka (1 out of 17 patents)

4. Yoshihiro Ikefuji (1 out of 40 patents)

5. Kyoji Marumoto (1 out of 14 patents)

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