% Expired Patents = 28.6

Forward Citations = 429

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24 inventors (with patents filed for the assignee):

Hiroshi Akiyama (3 out of 55 patents)

Tsutomu Yamashita (3 out of 7 patents)

Yutaka Muramatsu (3 out of 5 patents)

4. Hidehito Asano (3 out of 5 patents)

5. Wataru Sagawa (2 out of 4 patents)

6. Kazuhiro Wakamatsu (1 out of 40 patents)

7. Haruo Koharagi (1 out of 34 patents)

8. Shigeji Kaneko (1 out of 3 patents)

9. Hiroshi Saga (1 out of 3 patents)

10. Kazuo Tahara (1 out of 51 patents)

11. Yuuji Hosoda (1 out of 2 patents)

12. Hiroyuki Sadamori (1 out of 4 patents)

13. Shin Nakamura (1 out of 6 patents)

14. Junichi Yamashita (1 out of 32 patents)

15. Kyouichi Kawasaki (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 7372053 - Rotating gantry of particle beam therapy system (2008-05-13),

2. 7181792 - Radiotherapeutic bed apparatus (2007-02-27),

3. 7030396 - Medical particle irradiation apparatus (2006-04-18),

4. 6903356 - Medical particle irradiation apparatus (2005-06-07),

5. 5085723 - Process and apparatus for producing magnetic diskette (1992-02-04),

6. 5015905 - DC dynamoelectric machine with interpoles having magnetic flux bypassing (1991-05-14),

7. 4922272 - High precision image recording apparatus (1990-05-01),

Company Overview

Hitachi Setsubi Engineering Co., Ltd. is a leading provider of engineering and construction services in Japan. With a focus on sustainable and innovative solutions, the company caters to various industries including energy, transportation, and infrastructure. Their expertise lies in designing and implementing efficient systems that optimize resources and operations for their clients.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#42 in Ibaraki

#5,456 in Japan

Ibaraki, Japan

Hitachi Setsubi Engineering Co., Ltd.

Forward Citations = 429

24 inventors:

Hiroshi Akiyama (3 out of 55 patents)

Tsutomu Yamashita (3 out of 7 patents)

Yutaka Muramatsu (3 out of 5 patents)

4. Hidehito Asano (3 out of 5 patents)

5. Wataru Sagawa (2 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Setsubi Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/hitachi-setsubi-engineering-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]