Forward Citations = 22

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3 inventors (with patents filed for the assignee):

Yasuo Hirose (2 out of 10 patents)

Hitoshi Kaji (1 out of 6 patents)

Shunzo Bunya (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5647741 - Heat exchanger for combustion apparatus (1997-07-15),

2. 5275556 - Heat recovery type combustion apparatus (1994-01-04),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#526 in

#11,139 in Japan

JP

Furnace Techno Co., Ltd.

Forward Citations = 22

3 inventors:

Yasuo Hirose (2 out of 10 patents)

Hitoshi Kaji (1 out of 6 patents)

Shunzo Bunya (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Furnace Techno Co., Ltd.. Retrieved from https://idiyas.com/company/furnace-techno-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]