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Hatachi Ltd

USPTO Granted Patents = 13

Forward Citations = 199

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42 inventors (with patents filed for the assignee):

Kazumichi Imai (1 out of 37 patents)

Mitsuaki Mirumachi (1 out of 13 patents)

Shinichi Fujino (1 out of 28 patents)

4. Yasushi Izunaga (1 out of 7 patents)

5. Shigeru Shimada (1 out of 37 patents)

6. Seiichi Mita (1 out of 69 patents)

7. Toshitsugu Takekuma (1 out of 29 patents)

8. Hidenobu Taniguchi (1 out of 4 patents)

9. Yoichi Tamaki (1 out of 32 patents)

10. Yoshinori Fukasaku (1 out of 16 patents)

11. Hirokazu Ougi (1 out of 1 patent)

12. Hideo Takashima (1 out of 1 patent)

13. Munetoshi Kouchi (1 out of 1 patent)

14. Hiroshi Hayami (1 out of 1 patent)

15. Hajime Asada (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 7110548 - Cryptographic communication method, encryption algorithm shared control method, encryption algorithm conversion method and network communication system (2006-09-19),

2. 6191425 - Multicolor fluorescence detection type electrophoretic analyzer (2001-02-20),

3. 5441834 - Process for fabricating phase shift mask and process of semiconductor (1995-08-15),

4. 5391915 - Integrated circuit having reduced soft errors and reduced penetration of (1995-02-21),

5. 5336046 - Noise reduced centrifugal blower (1994-08-09),

6. 5278868 - Receiver for quadraphase modulation signals (1994-01-11),

7. 5259038 - Point pattern matching method and system as well as picture recognizing (1993-11-02),

8. 5200348 - Method of manufacturing semiconductor device with constant width deep (1993-04-06),

9. 5091667 - D.C. machine of type having permanent magnets with auxiliary poles (1992-02-25),

10. 4889471 - Mechanism for prevention of burning of bearing portions in a hermetic (1989-12-26),

11. 4782037 - Process of fabricating a semiconductor insulated circuit device having a (1988-11-01),

12. 4412253 - Automatic noise removal device for a picture signal (1983-10-25),

13. 4354220 - Gas insulated power switch-gear apparatus (1982-10-12),

Company Overview

Hatachi Ltd, headquartered in Tokyo, Japan, is a prominent player in the technology sector, focusing on the development and manufacturing of advanced electronic components and systems. The company specializes in a range of domains, including semiconductor technology, telecommunications, and industrial automation. Hatachi is committed to innovation and quality, leveraging cutting-edge research to enhance its product offerings and maintain a competitive edge in the global market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

13 Patents

#1,660 in Tokyo

#3,749 in Japan

#45,039 in the World

Hatachi Ltd

Forward Citations = 199

42 inventors:

Kazumichi Imai (1 out of 37 patents)

Mitsuaki Mirumachi (1 out of 13 patents)

Shinichi Fujino (1 out of 28 patents)

4. Yasushi Izunaga (1 out of 7 patents)

5. Shigeru Shimada (1 out of 37 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hatachi Ltd. Retrieved from https://idiyas.com/company/hatachi

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]

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