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USPTO Data Jan 1 1976 - Nov 3 2026
1 Patents
#32 in Sakai
#15,774 in Japan
Osaka Filter Co., Ltd.
Forward Citations = 1
3 inventors:
Osaka Filter Co., Ltd.
Calculating rank
Forward Citations = 1
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3 inventors (with patents filed for the assignee):
Takao Matsui (1 out of 3 patents)
Kenkichi Itoh (1 out of 2 patents)
Toshio Murakami (1 out of 2 patents)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Osaka Filter Co., Ltd.. Retrieved from https://idiyas.com/company/osaka-filter-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]