Forward Citations = 24

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3 inventors (with patents filed for the assignee):

Zenzi Hagiwara (1 out of 3 patents)

Iwao Uenoyama (1 out of 1 patent)

Hiroo Ishino (1 out of 1 patent)

1 patent: Sort by Forward Citations

#1,657 in Osaka

#15,745 in Japan

Osaka Oxygen Ind Ltd.

Forward Citations = 24

3 inventors:

Zenzi Hagiwara (1 out of 3 patents)

Iwao Uenoyama (1 out of 1 patent)

Hiroo Ishino (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Osaka Oxygen Ind Ltd.. Retrieved from https://idiyas.com/company/osaka-oxygen-ind

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]