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USPTO Data Jan 1 1976 - Oct 20 2026
1 Patents
#1,658 in Osaka
#15,759 in Japan
Big Daishowa Co., Ltd.
Forward Citations = 0
10 inventors:
Big Daishowa Co., Ltd.
Calculating rank
EPO Patents = 2
Forward Citations = 0
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10 inventors (with patents filed for the assignee):
Masayuki Doi (1 out of 6 patents)
Kouichi Uemura (4 patents)
Reina Oohashi (4 patents)
4. Shunsuke Kumasaki (4 patents)
5. Akihito Funashoku (4 patents)
6. Yukio Tsujita (3 patents)
7. Masataka Yauchi (0 patent)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Big Daishowa Co., Ltd.. Retrieved from https://idiyas.com/company/big-daishowa
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]
2 patents (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]