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Fujiyoshida, Japan

Purpose Company Limited

USPTO Granted Patents = 25

% Expired Patents = 16.0

CIPO Patents = 1

EPO Patents = 6

Trademarks = 8

Forward Citations = 45

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34 inventors (with patents filed for the assignee):

Katsumi Naitoh (4 out of 5 patents)

Jun Aiso (4 out of 4 patents)

Toshiaki Aoki (4 out of 4 patents)

4. Tetsuya Oishi (3 out of 3 patents)

5. Yasutaka Hatada (3 out of 3 patents)

6. Kazuhiko Nakagawa (3 out of 3 patents)

7. Katumi Naitoh (3 out of 3 patents)

8. Tsuyoshi Sei (2 out of 2 patents)

9. Yasunori Katoh (2 out of 2 patents)

10. Kentaro Suzuki (2 out of 2 patents)

11. Kyohei Matsushita (2 out of 2 patents)

12. Setuo Watanabe (2 out of 2 patents)

13. Toshimi Murata (2 out of 2 patents)

14. Mituharu Satou (2 out of 2 patents)

15. Hidetada Takai (2 out of 5 patents)

Core Competencies:

Hot Water Supply

Heat Exchanger

Combustion Apparatus

Water Heater

Heat Source System

Premixing Apparatus

Cultivation Apparatus

Exhaust Heat Recovery

Control Method

Filtering Device

Pressure Circulation

Heat Medium Control

25 patents: Sort by Forward Citations

1. 11852341 - Hot water supply device, hot water supply program, hot water supply method, and recording medium (2023-12-26),

2. 11815290 - Heat source system, hot water supply system, hot water supply method, and hot water supply control program (2023-11-14),

3. 11739980 - Heat exchanging unit, heat exchanging apparatus, and hot water supply system (2023-08-29),

4. 11397003 - Premixing apparatus, heat source apparatus, and water heater (2022-07-26),

5. 11346580 - Burner, combustion apparatus, method for combustion, method for controlling combustion, recording medium, and water heater (2022-05-31),

6. 11168922 - Heat exchanger tube, heat exchange unit, heat exchange apparatus, hot water supply system, and method of manufacturing heat exchanger tube (2021-11-09),

7. 11103818 - Filter device and water heater (2021-08-31),

8. 11035571 - Piping connection unit, air supply or exhaust tube, and combustion apparatus (2021-06-15),

9. 10829726 - Pressure and circulation culture apparatus and pressure and circulation culture system (2020-11-10),

10. 10655848 - Premixing apparatus, heat source apparatus, and water heater (2020-05-19),

11. 10281173 - Burner, combustion apparatus, method for combustion, method for controlling combustion, recording medium, and water heater (2019-05-07),

12. 9927143 - Burner, combustion apparatus, water heating apparatus and combustion method (2018-03-27),

13. 9752112 - Pressure and circulation culture apparatus and pressure and circulation culture system (2017-09-05),

14. 9670450 - Cell or tissue cultivation apparatus and method of cultivation (2017-06-06),

15. 9557752 - Hot water supply apparatus and heat medium control method (2017-01-31),

Company Overview

Purpose Company Limited, based in Fujiyoshida, Japan, specializes in innovative solutions that enhance the quality of life through advanced technology. The company focuses on developing products and services that integrate seamlessly into everyday experiences, emphasizing sustainability and user-centric design. With a commitment to research and development, Purpose Company Limited explores various domains, including consumer electronics and smart home technologies, aiming to lead in the creation of impactful, forward-thinking solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

25 Patents

#1 in Fujiyoshida

#2,570 in Japan

#25,710 in the World

Fujiyoshida, Japan

Purpose Company Limited

Forward Citations = 45

34 inventors:

Katsumi Naitoh (4 out of 5 patents)

Jun Aiso (4 out of 4 patents)

Toshiaki Aoki (4 out of 4 patents)

4. Tetsuya Oishi (3 out of 3 patents)

5. Yasutaka Hatada (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Purpose Company Limited. Retrieved from https://idiyas.com/company/purpose-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]

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