Rinnai Corporation, headquartered in Aichi, Japan, specializes in advanced water heating technology. The company is renowned for its innovative solutions in the development and manufacturing of water heaters, heat exchangers, and combustion apparatuses. Rinnai's expertise extends to premixing apparatus, gas manifolds, and totally aerated combustion burners, positioning it as a leader in energy-efficient heating solutions. The organization is committed to enhancing comfort and convenience through cutting-edge technology in residential and commercial applications.

Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

200 Patents

#11 in Aichi

#698 in Japan

#4,224 in the World

Aichi, Japan

Rinnai Corporation

Forward Citations = 665

144 inventors:

Takashi Ojiro (20 out of 20 patents)

Takahiro Ono (14 out of 42 patents)

Masaru Takeuchi (13 out of 42 patents)

4. Kazuyuki Akagi (11 out of 11 patents)

5. Hiroaki Higashijima (11 out of 12 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rinnai Corporation. Retrieved from https://idiyas.com/company/rinnai

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]

7 patents (CIPO):

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]

42 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]