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USPTO Data Jan 1 1976 - Nov 3 2026
2 Patents
#175 in Nagoya
#11,154 in Japan
Ryowa Engineering Company, Limited
Forward Citations = 36
3 inventors:
Ryowa Engineering Company, Limited
Calculating rank
Forward Citations = 36
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3 inventors (with patents filed for the assignee):
Kazuo Yamada (2 out of 3 patents)
Hiroshi Sakaki (1 out of 1 patent)
Shingo Yamada (1 out of 1 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ryowa Engineering Company, Limited. Retrieved from https://idiyas.com/company/ryowa-engineering-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]