Forward Citations = 68

Loading Chart...

34 inventors (with patents filed for the assignee):

Nobuo Masuoka (1 out of 137 patents)

Kenji Hirose (1 out of 102 patents)

Yoshiharu Yamashita (1 out of 19 patents)

4. Kiyoshige Kinugawa (1 out of 41 patents)

5. Ikuo Nishida (1 out of 29 patents)

6. Hiroyuki Mano (1 out of 60 patents)

7. Hidekazu Takeda (1 out of 26 patents)

8. Masao Iwakura (1 out of 17 patents)

9. Hiroaki Fukumaru (1 out of 9 patents)

10. Mitsuhiko Okutsu (1 out of 11 patents)

11. Tatsuhiro Inuzuka (1 out of 24 patents)

12. Takanori Nishiyama (1 out of 25 patents)

13. Satoshi Konuma (1 out of 11 patents)

14. Satoru Tsunekawa (1 out of 33 patents)

15. Shinichiro Yamaguchi (1 out of 15 patents)

7 patents: Sort by Forward Citations

1. 5315460 - Magnetic recording and reproducing apparatus including S fixed chassis (1994-05-24),

2. 5301258 - Fuzzy backward reasoning system and expert system utilizing the same (1994-04-05),

3. D339123 - Video tape recorder (1993-09-07),

4. 5206635 - Method and apparatus for multi-level tone display for liquid crystal (1993-04-27),

5. 5148049 - Circuit for driving a capacitive load utilizing thyristors (1992-09-15),

6. 4967339 - Operation control apparatus for a processor having a plurality of (1990-10-30),

7. 4445169 - Sequence display apparatus and method (1984-04-24),

Company Overview

Hitachi Engineering Ltd is a leading engineering company providing innovative solutions in the fields of energy, infrastructure, and industrial systems. With a strong focus on sustainability and efficiency, Hitachi Engineering is committed to delivering high-quality products and services that meet the needs of their customers. Through cutting-edge technology and expertise, the company strives to create a better future for all.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#2,284 in Tokyo

#5,450 in Japan

Tokyo, Japan

Hitachi Engineering Ltd

Forward Citations = 68

34 inventors:

Nobuo Masuoka (1 out of 137 patents)

Kenji Hirose (1 out of 102 patents)

Yoshiharu Yamashita (1 out of 19 patents)

4. Kiyoshige Kinugawa (1 out of 41 patents)

5. Ikuo Nishida (1 out of 29 patents)

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

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]