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Noritz Corporation

USPTO Granted Patents = 220

EPO Patents = 2

Trademarks = 7

Forward Citations = 838

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230 inventors (with patents filed for the assignee):

Norihide Wada (22 out of 22 patents)

Hironao Matsunaga (20 out of 21 patents)

Takanori Nagano (18 out of 19 patents)

4. Takahide Hasegawa (17 out of 18 patents)

5. Masaki Kondo (17 out of 17 patents)

6. Masaki Sugatani (16 out of 17 patents)

7. Takeshi Oohigashi (14 out of 14 patents)

8. Shuji Kameyama (13 out of 13 patents)

9. Yasutaka Kuriyama (12 out of 12 patents)

10. Hideyuki Fujisawa (11 out of 11 patents)

11. Takashi Akiyama (11 out of 11 patents)

12. Keigo Fukunishi (11 out of 11 patents)

13. Hiroshi Morimoto (10 out of 17 patents)

14. Ryosuke Umakoshi (10 out of 10 patents)

15. Teizo Nanbu (10 out of 10 patents)

Core Competencies:

Hot Water Supply Device

Water Heater

Heat Exchanger

Temperature Control Collar

Combustion Apparatus

Premixing Device

Heating Apparatus

Water Heating System

Venturi Fitting

Air Blower

Exhaust System

Communication Adapter

220 patents: Sort by Forward Citations

1. 12442559 - Hot water supplier monitoring system (2025-10-14),

2. 12435883 - Hot water supply device and hot water supply system (2025-10-07),

3. 12429249 - Water heater (2025-09-30),

4. 12422167 - Hot water apparatus (2025-09-23),

5. D1089545 - Venturi fitting (2025-08-19),

6. D1088189 - Venturi main body (2025-08-12),

7. D1085363 - Temperature control collar (2025-07-22),

8. D1085362 - Temperature control collar (2025-07-22),

9. D1083631 - Temperature control collar (2025-07-15),

10. D1082570 - Temperature adjustment valve (2025-07-08),

11. 12352438 - Air blower and combustion device including the same (2025-07-08),

12. 12305884 - Heat exchanger and water heater equipped with the same (2025-05-20),

13. 12276421 - Collective exhaust system (2025-04-14),

14. 12276341 - Valve device and hot water supply device (2025-04-14),

15. 12264818 - Premixing device and combustion device including the premixing device (2025-04-01),

Noritz Corporation is a global leader in the manufacturing of high-quality tankless water heaters. With a strong dedication to technological innovation and customer satisfaction, Noritz has been providing energy-efficient and reliable water heating solutions for residential and commercial applications since its establishment in 1951. The company's products are known for their durability, advanced features, and eco-friendly designs, and Noritz continues to push the boundaries of water heating technology to meet the evolving needs of its customers.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

220 Patents

#8 in Hyogo

#640 in Japan

#3,777 in the World

Noritz Corporation

Forward Citations = 838

230 inventors:

Norihide Wada (22 out of 22 patents)

Hironao Matsunaga (20 out of 21 patents)

Takanori Nagano (18 out of 19 patents)

4. Takahide Hasegawa (17 out of 18 patents)

5. Masaki Kondo (17 out of 17 patents)

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