% Expired Patents = 16.7

Forward Citations = 31

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18 inventors (with patents filed for the assignee):

Tetuo Yamagata (2 out of 2 patents)

Yoshinobu Imamura (2 out of 3 patents)

Shigeki Kamei (2 out of 5 patents)

4. Seiichi Tanabe (1 out of 1 patent)

5. Tomoya Okamura (1 out of 1 patent)

6. Kosuke Ode (1 out of 1 patent)

7. Naoyuki Takahashi (1 out of 8 patents)

8. Takahisa Nitta (1 out of 6 patents)

9. Minoru Higuchi (1 out of 1 patent)

10. Seiji Watanabe (1 out of 6 patents)

11. Atuo Hirai (1 out of 1 patent)

12. Masamori Fushio (1 out of 1 patent)

13. Hiromichi Nakamori (1 out of 1 patent)

14. Yoko Sato (1 out of 1 patent)

15. Hajime Ito (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 6585236 - Aerator (2003-07-01),

2. 4718539 - Conveyor means (1988-01-12),

3. 4457945 - Mushroom growing by utilizing sewage sludge compost and re-utilization (1984-07-03),

4. 4436026 - Empty can crusher (1984-03-13),

5. 4373433 - Method and apparatus for dewatering screenings (1983-02-15),

6. 4090619 - Machine for scraping up grit (1978-05-23),

Company Overview

Hitachi Kiden Kogyo, Ltd. is a leading Japanese manufacturer of mechatronics and automation systems. With a focus on precision engineering and innovative technology, the company provides a wide range of products and solutions for various industries, including automotive, semiconductor, and robotics. Hitachi Kiden Kogyo is known for its high-quality products and reliable service, helping customers achieve greater efficiency and productivity in their operations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#102 in Hyogo

#5,990 in Japan

Hyogo, Japan

Hitachi Kiden Kogyo, Ltd.

Forward Citations = 31

18 inventors:

Tetuo Yamagata (2 out of 2 patents)

Yoshinobu Imamura (2 out of 3 patents)

Shigeki Kamei (2 out of 5 patents)

4. Seiichi Tanabe (1 out of 1 patent)

5. Tomoya Okamura (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Kiden Kogyo, Ltd.. Retrieved from https://idiyas.com/company/hitachi-kiden-kogyo

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]