EPO Patents = 1

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

Ippei Tanaka (1 out of 4 patents)

Keiko Iwasaki (1 out of 1 patent)

Kaisei Ryu (1 out of 1 patent)

4. Kaisei Ryu (0 patent)

5. Keiko Iwasaki (0 patent)

1 patent: Sort by Forward Citations

#1,657 in Osaka

#15,745 in Japan

Iwase Cosfa Co., Ltd.

Forward Citations = 0

5 inventors:

Ippei Tanaka (1 out of 4 patents)

Keiko Iwasaki (1 out of 1 patent)

Kaisei Ryu (1 out of 1 patent)

4. Kaisei Ryu (0 patent)

5. Keiko Iwasaki (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Iwase Cosfa Co., Ltd.. Retrieved from https://idiyas.com/company/iwase-cosfa

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]

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]