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Hitachi Heating Appliances Co., Ltd.

USPTO Granted Patents = 31

Forward Citations = 498

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53 inventors (with patents filed for the assignee):

Hajime Tachikawa (7 out of 8 patents)

Mitsuru Watanabe (7 out of 7 patents)

Kenji Satoh (5 out of 18 patents)

4. Osami Tatsukawa (4 out of 4 patents)

5. Itsuo Kikuchi (4 out of 4 patents)

6. Shuji Ohkawa (4 out of 5 patents)

7. Kazuo Kaneko (3 out of 21 patents)

8. Yukichi Yazawa (3 out of 3 patents)

9. Masahiro Ishihara (3 out of 3 patents)

10. Koji Iwabuchi (3 out of 3 patents)

11. Kouichi Hotta (3 out of 3 patents)

12. Takeichi Obata (3 out of 6 patents)

13. Eiichi Kubota (2 out of 9 patents)

14. Shunichi Taguchi (2 out of 3 patents)

15. Hisayuki Serizawa (2 out of 2 patents)

31 patents: Sort by Forward Citations

1. D313919 - Microwave oven (1991-01-22),

2. 4903587 - Automatic baking apparatus (1990-02-27),

3. D304281 - Microwave oven (1989-10-31),

4. 4868359 - Radiation sealed door in a microwave heating apparatus (1989-09-19),

5. 4845327 - Microwave oven having automatic bread making function (1989-07-04),

6. 4814588 - Foodstuffs heating apparatus using information cards for automatic mode (1989-03-21),

7. 4749973 - Waveguide filter used in a microwave oven (1988-06-07),

8. 4664095 - Safety device for open-type combustor (1987-05-12),

9. 4570207 - Luminous indicating device (1986-02-11),

10. D280064 - Electric rice cooker (1985-08-13),

11. 4520250 - Heating apparatus of thawing sensor controlled type (1985-05-28),

12. 4518839 - High frequency heating apparatus with wireless temperature probe (1985-05-21),

13. 4506127 - High-frequency heating apparatus (1985-03-19),

14. 4475023 - Microwave heating apparatus with fundamental and second higher harmonic (1984-10-02),

15. 4450345 - Foodstuffs heating apparatus with selective heating functions (1984-05-22),

Hitachi Heating Appliances Co., Ltd. is a leading global manufacturer of heating appliances. With a wide range of innovative and energy-efficient products, we provide solutions for both residential and commercial heating needs. Our products include heat pumps, air conditioners, water heaters, and more. As a subsidiary of Hitachi, Ltd., we strive for superior quality and reliable performance in all our products. Visit our website for more information and explore our extensive product offerings.

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

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USPTO Data Jan 1 1976 - Dec 30 2025

31 Patents

#1 in Kashiwa

#2,215 in Japan

#20,637 in the World

Hitachi Heating Appliances Co., Ltd.

Forward Citations = 498

53 inventors:

Hajime Tachikawa (7 out of 8 patents)

Mitsuru Watanabe (7 out of 7 patents)

Kenji Satoh (5 out of 18 patents)

4. Osami Tatsukawa (4 out of 4 patents)

5. Itsuo Kikuchi (4 out of 4 patents)

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