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USPTO Data Jan 1 1976 - Oct 13 2026
152 Patents
#13 in Nagano
#845 in Japan
#5,366 in the World
Koa Corporation
Forward Citations = 308
161 inventors:
Koa Corporation
% Expired Patents = 9.2
EPO Patents = 5
Trademarks = 9
Forward Citations = 308
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161 inventors (with patents filed for the assignee):
Keishi Nakamura (19 out of 19 patents)
Koichi Hirasawa (13 out of 13 patents)
Tamotsu Endo (10 out of 10 patents)
4. Kenji Kameko (10 out of 10 patents)
5. Tadahiko Yoshioka (9 out of 9 patents)
6. Kentaro Matsumoto (8 out of 8 patents)
7. Takanori Kikuchi (7 out of 12 patents)
8. Yasuyuki Katase (6 out of 6 patents)
9. Shuhei Matsubara (6 out of 6 patents)
10. Susumu Toyoda (6 out of 6 patents)
11. Yasushi Akahane (6 out of 6 patents)
12. Yoji Gomi (5 out of 6 patents)
13. Kenichi Iguchi (5 out of 28 patents)
14. Koichi Urano (5 out of 5 patents)
15. Satoshi Chiku (5 out of 5 patents)
Core Competencies:
Shunt Resistor
Current Detection
Gas Sensor
Chip Component
Resistive Material
Sensor Device
Manufacturing Method
Flow Rate Sensor
Zinc Oxide Varistor
Thermal Analysis Device
Electronic Component
Noise-Preventing Resistor
152 patents:
Company Overview
Koa Corporation, headquartered in Nagano, Japan, specializes in resistor technology, focusing on the development and manufacturing of high-quality resistive components. The company is renowned for its expertise in shunt resistors and current detection systems, which are integral to various electronic applications. Koa also innovates in gas sensors and flow rate sensors, leveraging advanced manufacturing methods to produce reliable sensor devices. Their commitment to research and development positions them as a key player in the resistor technology sector.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Koa Corporation. Retrieved from https://idiyas.com/company/koa
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]
5 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]