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USPTO Data Jan 1 1976 - Dec 30 2025
192 Patents
#9 in Aichi
#707 in Japan
#4,260 in the World
Rinnai Corporation
Forward Citations = 631
134 inventors:
Rinnai Corporation
CIPO Patents = 7
EPO Patents = 40
Trademarks = 2
Forward Citations = 631
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134 inventors (with patents filed for the assignee):
Takashi Ojiro (20 out of 20 patents)
Takahiro Ono (14 out of 41 patents)
Masaru Takeuchi (12 out of 41 patents)
4. Kazuyuki Akagi (11 out of 11 patents)
5. Hiroaki Higashijima (11 out of 12 patents)
6. Masakazu Ando (10 out of 10 patents)
7. Hideo Okamoto (9 out of 12 patents)
8. Yoshikazu Kubo (9 out of 10 patents)
9. Toshimitsu Nagasaka (8 out of 8 patents)
10. Kazuya Hirota (7 out of 8 patents)
11. Atsuhito Gama (7 out of 8 patents)
12. Keiichi Ito (7 out of 33 patents)
13. Ikuro Adachi (6 out of 6 patents)
14. Hiroyuki Yamada (6 out of 11 patents)
15. Shinichiro Hata (6 out of 7 patents)
Core Competencies:
Heat Exchanger
Premixing Apparatus
Combustion Apparatus
Rich-Lean Flame Burner
Water Heater
Gas Governor
Fine Bubble Generator
Gas Manifold
Heating Device
Hot-Water Supply Apparatus
Tankless Water Heater
Blower Fan
192 patents:
Rinnai Corporation is a leading manufacturer of energy-efficient heating and water heating products. With a history dating back to 1920, Rinnai has been a pioneer in the industry, delivering innovative solutions for residential and commercial applications. The company's product portfolio includes tankless water heaters, boilers, direct vent furnaces, and radiant heating systems. Rinnai's commitment to quality, reliability, and environmental sustainability has established them as a trusted brand worldwide.
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7 patents (CIPO):
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40 patents (EPO):
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