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USPTO Data Jan 1 1976 - Nov 3 2026
7 Patents
#91 in Nagoya
#5,464 in Japan
Ngk Spark Plug., Ltd.
Forward Citations = 47
16 inventors:
Ngk Spark Plug., Ltd.
Calculating rank
% Expired Patents = 42.9
CIPO Patents = 13
Forward Citations = 47
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16 inventors (with patents filed for the assignee):
Tatsuya Gozawa (1 out of 28 patents)
Jiro Kyuno (1 out of 21 patents)
Naomichi Miyashita (1 out of 15 patents)
4. Mamoru Musasa (1 out of 40 patents)
5. Tomoyuki Tanaka (1 out of 2 patents)
6. Kouji Okazaki (1 out of 3 patents)
7. Yasuhiro Sugimoto (1 out of 7 patents)
8. Kazuhiro Suzuki (1 out of 3 patents)
9. Rokuro Kambe (1 out of 8 patents)
10. Kenichi Nishikawa (1 out of 17 patents)
11. Makoto Sugimoto (1 out of 35 patents)
12. Yukihiro Kimura (1 out of 16 patents)
13. Tetsuya Kasiwagi (1 out of 1 patent)
14. Masato Taniguchi (1 out of 41 patents)
15. Keizo Furusaki (9 patents)
7 patents:
Company Overview
NGK Spark Plug Co., Ltd. is a leading manufacturer of spark plugs and related products for automotive, motorcycle, marine, and small engine applications. The company also produces a range of sensor products and ceramics. NGK operates globally and is known for its innovative technology and high-quality products.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ngk Spark Plug., Ltd.. Retrieved from https://idiyas.com/company/ngk-spark-plug
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]
13 patents (CIPO):
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]