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USPTO Data Jan 1 1976 - Oct 13 2026
53 Patents
#776 in Tokyo
#1,650 in Japan
#13,334 in the World
Hitachi Construction Machinery
Forward Citations = 52
325 inventors:
Hitachi Construction Machinery
% Expired Patents = 1.9
EPO Patents = 66
Forward Citations = 52
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325 inventors (with patents filed for the assignee):
Shinya Imura (7 out of 120 patents)
Ryu Narikawa (6 out of 25 patents)
Hidefumi Ishimoto (5 out of 40 patents)
4. Shinji Nishikawa (5 out of 51 patents)
5. Akihiro Narazaki (5 out of 37 patents)
6. Hidekazu Moriki (4 out of 58 patents)
7. Teppei Saitoh (4 out of 25 patents)
8. Masaki Kanai (3 out of 18 patents)
9. Hideaki Ito (3 out of 3 patents)
10. Kento Kumagai (3 out of 3 patents)
11. Takaaki Chiba (2 out of 27 patents)
12. Akira Kanazawa (2 out of 13 patents)
13. Yoshitaka Yanase (2 out of 3 patents)
14. Hiroaki Amano (2 out of 27 patents)
15. Shinichi Uotsu (2 out of 16 patents)
Core Competencies:
Welding Measuring System
Electric Powered Working Machine
Remote Control System
Performance Diagnostic Device
Hydraulic Shovel
Unmanned Work Machine
Traffic Control System
Work Management System
Control Device
Component Service Life Prediction
Construction Assistance System
Action Recognition System
53 patents:
Company Overview
Hitachi Construction Machinery, headquartered in Tokyo, Japan, specializes in the development and manufacture of advanced construction machinery. The company focuses on innovative technologies such as welding measuring systems, electric-powered working machines, and remote control systems. Its product portfolio includes hydraulic shovels and unmanned work machines, emphasizing efficiency and performance. Hitachi Construction Machinery also invests in traffic control and work management systems, enhancing operational capabilities in the construction sector.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Construction Machinery. Retrieved from https://idiyas.com/company/hitachi-construction-machinery
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]
66 patents (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]