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USPTO Data Jan 1 1976 - Oct 13 2026
217 Patents
#3 in Mobara
#671 in Japan
#3,940 in the World
Hitachi Device Engineering Co., Ltd.
Forward Citations = 2,904
416 inventors:
Hitachi Device Engineering Co., Ltd.
% Expired Patents = 33.2
EPO Patents = 1
Forward Citations = 2,904
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416 inventors (with patents filed for the assignee):
Masashi Horiguchi (20 out of 180 patents)
Takesada Akiba (17 out of 50 patents)
Naoto Kobayashi (15 out of 22 patents)
4. Mitsuru Goto (13 out of 75 patents)
5. Iwao Takemoto (11 out of 82 patents)
6. Yoshihiro Imajo (11 out of 39 patents)
7. Yasushi Kawase (11 out of 21 patents)
8. Goro Kitsukawa (11 out of 70 patents)
9. Nobuyuki Ishige (9 out of 42 patents)
10. Ken Shibata (9 out of 29 patents)
11. Toshio Miyazawa (9 out of 170 patents)
12. Takayuki Kawahara (9 out of 126 patents)
13. Yukihide Ode (9 out of 25 patents)
14. Hiroaki Nambu (9 out of 36 patents)
15. Shunichi Saeki (9 out of 21 patents)
Core Competencies:
Liquid Crystal Display
Semiconductor Device
Integrated Circuit
Memory Circuit
Active Matrix Display
Display Device
Voltage Level Converter
Data Processing
Non-Volatile Memory
Lighting Device
Drive Circuit
Image Display
217 patents:
Company Overview
Hitachi Device Engineering Co., Ltd., based in Mobara, Japan, specializes in the development and manufacturing of advanced liquid crystal display technologies. The company focuses on a range of core technologies, including semiconductor devices, integrated circuits, and memory circuits, which are integral to modern display devices. With expertise in active matrix displays and voltage level converters, Hitachi Device Engineering plays a crucial role in enhancing data processing capabilities within the display industry.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Device Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/hitachi-device-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]
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]
1 patent (EPO):
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]