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Noritz Corporation

USPTO Granted Patents = 230

% Expired Patents = 14.3

EPO Patents = 3

Trademarks = 6

Forward Citations = 891

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235 inventors (with patents filed for the assignee):

Norihide Wada (23 out of 24 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. Hideyuki Fujisawa (12 out of 12 patents)

10. Yasutaka Kuriyama (12 out of 12 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:

Water Heater

Heat Exchanger

Combustion Device

Hot Water Supply System

Temperature Control

Premixing Device

Flow Regulating Valve

Heating Apparatus

Monitoring System

Distribution Valve

Venturi Fitting

Collective Exhaust System

230 patents: Sort by Forward Citations

1. 12729878 - Heat exchanger and hot water apparatus including heat exchanger (2026-09-08),

2. 12704294 - Wireless pairing of hot water supply system (2026-08-11),

3. 12687322 - Hot water supply system (2026-07-21),

4. 12663183 - System for establishing wireless pairing between plurality of hot water supply device of hot water supply system (2026-06-23),

5. 12663166 - Hot water circulation device and hot water device monitoring system (2026-06-23),

6. D1124246 - Water flow servo (2026-04-28),

7. 12590710 - Linked hot water supply system (2026-03-31),

8. 12584561 - Distribution valve (2026-03-24),

9. D1117653 - Flow regulating valve (2026-03-10),

10. 12529476 - Premixing device and combustion device including the same (2026-01-20),

11. 12442559 - Hot water supplier monitoring system (2025-10-14),

12. 12435883 - Hot water supply device and hot water supply system (2025-10-07),

13. 12429249 - Water heater (2025-09-30),

14. 12422167 - Hot water apparatus (2025-09-23),

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

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 - Sep 15 2026

Noritz Corporation

230 Patents

#7 in Hyogo

#640 in Japan

#3,719 in the World

Noritz Corporation

Forward Citations = 891

235 inventors:

Norihide Wada (23 out of 24 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)

Please report any incorrect information to [email protected]

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