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Hiatchi, Ltd.

USPTO Granted Patents = 17

% Expired Patents = 23.5

Forward Citations = 374

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84 inventors (with patents filed for the assignee):

Kazuo Takeda (1 out of 51 patents)

Yoshitaka Nakamura (1 out of 73 patents)

Shuichi Suzuki (1 out of 72 patents)

4. Chahn Lee (1 out of 12 patents)

5. Hirotaka Imayama (1 out of 63 patents)

6. Kazuhiko Yanagawa (1 out of 150 patents)

7. Nobuyoshi Kobayashi (1 out of 39 patents)

8. Yoshio Okamoto (1 out of 72 patents)

9. Shinji Shimizu (1 out of 32 patents)

10. Keiichiro Ashizawa (1 out of 82 patents)

11. Kouji Yoshida (1 out of 18 patents)

12. Yasunaga Hamada (1 out of 15 patents)

13. Yoshitaka Tadaki (1 out of 52 patents)

14. Noriyuki Saiki (1 out of 13 patents)

15. Masayuki Yamamoto (1 out of 166 patents)

17 patents: Sort by Forward Citations

1. 7181126 - Image retrieving method and apparatuses therefor (2007-02-20),

2. 7106518 - Optical unit and image display apparatus (2006-09-12),

3. 7105246 - Catalytic material, electrode, and fuel cell using the same (2006-09-12),

4. 7076688 - Failure information management method and management server in a network equipped with a storage device (2006-07-11),

5. 7022183 - Semiconductor thin film and process for production thereof (2006-04-04),

6. 6336034 - Integrated control system for radio service areas of base stations in mobile communication system (2002-01-01),

7. D449307 - Combined touch pad and buttons for a portable computer (2001-10-17),

8. 6303478 - Semiconductor integrated circuit device and method for fabricating the same (2001-10-16),

9. 6290402 - Optical transmission module for achieving an optimum optical connection and useful for high density mounting (2001-09-18),

10. 6281071 - Method of producing semiconductor integrated circuit device having switching MISFET and capacitor element including wiring therefor and method of producing such wiring (2001-08-28),

11. 6278582 - Magnetic head and magnetic head manufacturing method (2001-08-21),

12. 6277749 - Method of manufacturing a semiconductor integrated circuit device (2001-08-21),

13. 6275941 - Security management method for network system (2001-08-14),

14. 6274998 - Controller for electric vehicles (2001-08-14),

15. 6270329 - Rotary compressor (2001-08-07),

Company Overview

Hitachi, Ltd. is a diversified multinational company headquartered in Tokyo, Japan, specializing in a wide range of sectors including information technology, social infrastructure, high functional materials, and systems. The company is known for its innovations in areas such as cloud computing, data analytics, and industrial automation, contributing significantly to smart city initiatives and sustainable development. Hitachi's commitment to research and development drives advancements in various technologies, enhancing efficiency and connectivity across industries globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

17 Patents

#1,457 in Tokyo

#3,230 in Japan

#35,948 in the World

Hiatchi, Ltd.

Forward Citations = 374

84 inventors:

Kazuo Takeda (1 out of 51 patents)

Yoshitaka Nakamura (1 out of 73 patents)

Shuichi Suzuki (1 out of 72 patents)

4. Chahn Lee (1 out of 12 patents)

5. Hirotaka Imayama (1 out of 63 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hiatchi, Ltd.. Retrieved from https://idiyas.com/company/hiatchi

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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