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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#250 in Aichi
#11,147 in Japan
Ngk Spark Co., Ltd.
Forward Citations = 30
8 inventors:
Ngk Spark Co., Ltd.
Calculating rank
Forward Citations = 30
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8 inventors (with patents filed for the assignee):
Masahiko Okuyama (1 out of 23 patents)
Noboru Ishida (1 out of 47 patents)
Hidetoshi Mizutani (1 out of 12 patents)
4. Masaya Ito (1 out of 33 patents)
5. Hiroshi Katagiri (1 out of 9 patents)
6. Hirofumi Ozeki (1 out of 10 patents)
7. Noritaka Yoshida (1 out of 1 patent)
8. Shunichi Takagi (1 out of 15 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ngk Spark Co., Ltd.. Retrieved from https://idiyas.com/company/ngk-spark-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]
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]