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Noritz Corporation

USPTO Granted Patents = 232

% Expired Patents = 14.2

EPO Patents = 3

Trademarks = 6

Forward Citations = 891

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236 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

232 patents: Sort by Forward Citations

1. D1150365 - Orifice member (2026-09-29),

2. 12750895 - Recording medium recording program executed on mobile communication terminal that communicates with water heater, and water heater (2026-09-29),

3. 12729878 - Heat exchanger and hot water apparatus including heat exchanger (2026-09-08),

4. 12704294 - Wireless pairing of hot water supply system (2026-08-11),

5. 12687322 - Hot water supply system (2026-07-21),

6. 12663183 - System for establishing wireless pairing between plurality of hot water supply device of hot water supply system (2026-06-23),

7. 12663166 - Hot water circulation device and hot water device monitoring system (2026-06-23),

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

9. 12590710 - Linked hot water supply system (2026-03-31),

10. 12584561 - Distribution valve (2026-03-24),

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

12. 12529476 - Premixing device and combustion device including the same (2026-01-20),

13. 12442559 - Hot water supplier monitoring system (2025-10-14),

14. 12435883 - Hot water supply device and hot water supply system (2025-10-07),

15. 12429249 - Water heater (2025-09-30),

Company Overview

Noritz Corporation, headquartered in Hyogo, Japan, specializes in the development and manufacturing of advanced hot water supply systems. The company is recognized for its innovative technologies in water heaters, heat exchangers, and combustion devices, focusing on energy efficiency and user comfort. Noritz's expertise extends to temperature control systems, premixing devices, and flow regulating valves, positioning it as a leader in the hot water supply industry, catering to both residential and commercial markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

232 Patents

#7 in Hyogo

#635 in Japan

#3,697 in the World

Noritz Corporation

Forward Citations = 891

236 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)

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

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]

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