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Toyotomi Kogyo Co., Ltd.

USPTO Granted Patents = 86

Trademarks = 5

Forward Citations = 435

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30 inventors (with patents filed for the assignee):

Kazuharu Nakamura (69 out of 70 patents)

Yutaka Nakanishi (23 out of 25 patents)

Yoshio Mito (12 out of 15 patents)

4. Motoki Matsumoto (11 out of 12 patents)

5. Toshihiko Yamada (11 out of 13 patents)

6. Yoshimasa Tsuboi (5 out of 5 patents)

7. Akinobu Kondo (4 out of 4 patents)

8. Tooru Yoshino (4 out of 4 patents)

9. Kazuhiko Takeuchi (3 out of 3 patents)

10. Takashi Kawai (3 out of 3 patents)

11. Kouichi Watanabe (2 out of 2 patents)

12. Akiyoshi Okayasu (2 out of 2 patents)

13. Osamu Niha (2 out of 2 patents)

14. Yuji Sanada (2 out of 2 patents)

15. Shigeo Gamou (2 out of 2 patents)

Core Competencies:

Oil Burner

Combustion Cylinder

Oil-Fired Space Heater

Fire-Extinguishing Device

Safety Device

Electric Radiant Heater

Hot Water Circulating System

Fuel Supply System

Ignition System

Wick Operating Structure

Abnormal Combustion Detection

Catalyst Moving Structure

86 patents: Sort by Forward Citations

1. 5087195 - Combustion cylinder structure for oil burner (1992-02-11),

2. 5030085 - Wick operating structure of lever actuation type for oil burner (1991-07-09),

3. D314816 - Oil-fired space heater (1991-02-19),

4. D310408 - Oil fired space heater (1990-09-04),

5. 4921166 - Hot water circulating system (1990-05-01),

6. 4915296 - Hot water circulating system (1990-04-10),

7. D305260 - Electric radiant heater (1989-12-26),

8. 4872829 - Fire-extinguishing device for oil burner (1989-10-10),

9. 4854858 - Oil reservoir for oil burner (1989-08-08),

10. 4850855 - Combustion cylinder structure for oil burner (1989-07-25),

11. 4846672 - Combustion cylinder structure for oil burner (1989-07-11),

12. D301163 - Oil-fired space heater or similar article (1989-05-16),

13. 4810185 - Fire-extinguishing device for oil burner (1989-03-07),

14. 4805589 - Fire-extinguishing device for oil burner (1989-02-21),

15. 4797088 - Safety device for oil burner (1989-01-10),

Toyotomi Kogyo Co., Ltd. is a Japanese engineering company founded in 1949. They specialize in manufacturing and selling a wide range of products including heating systems, kitchen appliances, and environmental products. With a focus on innovation and technological expertise, Toyotomi Kogyo aims to provide high-quality and energy-efficient solutions to meet the evolving needs of their customers.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

86 Patents

#47 in

#1,208 in Japan

#8,581 in the World

Toyotomi Kogyo Co., Ltd.

Forward Citations = 435

30 inventors:

Kazuharu Nakamura (69 out of 70 patents)

Yutaka Nakanishi (23 out of 25 patents)

Yoshio Mito (12 out of 15 patents)

4. Motoki Matsumoto (11 out of 12 patents)

5. Toshihiko Yamada (11 out of 13 patents)

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