Masayuki Kawasaki (2 out of 10 patents)
Company Badge
USPTO Data Jan 1 1976 - Oct 13 2026
2 Patents
#186 in Saitama 343-0827
#11,133 in Japan
V Spark Co., Ltd.
Forward Citations = 3
1 inventor:
V Spark Co., Ltd.
% Expired Patents = 50.0
EPO Patents = 1
Forward Citations = 3
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1 inventor (with patents filed for the assignee):
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: V Spark Co., Ltd.. Retrieved from https://idiyas.com/company/v-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]
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]