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For the Inventor, By the Inventor

Gunma, Japan

Sawafuji Electric Co., Ltd.


USPTO Granted Patents = 79



Trademarks = 2

Forward Citations = 876

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102 inventors (with patents filed for the assignee):

goldMedal Tomonori Miura (12 out of 12 patents)

silverMedal Shinji Kambara (10 out of 10 patents)

bronzeMedal Yoshiaki Fujisawa (7 out of 7 patents)

4.  Naoki Akazawa (7 out of 7 patents)

5.  Tatsuya Ikeda (6 out of 6 patents)

6.  Yukio Okuda (6 out of 6 patents)

7.  Sadayoshi Kajino (5 out of 28 patents)

8.  Kazuyuki Ogiwara (5 out of 5 patents)

9.  Masao Namai (4 out of 5 patents)

10.  Naoya Kawakami (4 out of 4 patents)

11.  Hiroyuki Kainuma (4 out of 4 patents)

12.  Katsutoshi Tagami (4 out of 25 patents)

13.  Youichi Hasegawa (3 out of 35 patents)

14.  Masaru Sakamoto (3 out of 3 patents)

15.  Syuichi Aoki (3 out of 5 patents)


Core Competencies:
Fuel Reforming
Hydrogen Recycle
Portable Refrigerators
Outer Rotor Electric Motor
Hydrogen Purification
Energy Storage
Vibrating Compressors
Electric Rotating Machines
Engine Generators
Control Systems
Non-Catalytic Denitration
Power Supply

79 patents:

1. 12447458 - Fuel-reforming device and fuel-reforming method (2025-10-21),
2. 12246963 - Hydrogen recycle system and hydrogen recycle method (2025-03-11),
3. D1062809 - Portable refrigerator (2025-02-18),
4. 12024427 - Hydrogen recycle system and hydrogen recycle method (2024-07-02),
5. 11964251 - Fuel-reforming device and fuel-reforming method (2024-04-23),
6. 11472701 - Hydrogen purification device and hydrogen purification method (2022-10-18),
7. 11088595 - Rotor structure for outer rotor electric motor (2021-08-10),
8. 11014809 - Transportation device equipped with fuel cell system (2021-05-25),
9. 10647571 - Hydrogen generator (2020-05-12),
10. 10577241 - Hydrogen generator (2020-03-03),
11. 10377628 - Energy storage transportation method and energy carrier system (2019-08-13),
12. D851138 - Refrigerator (2019-06-11),
13. 10065170 - Hydrogen generating apparatus and fuel cell system provided with hydrogen generating apparatus (2018-09-04),
14. 9919270 - Non-catalytic denitration device and non-catalytic denitration method (2018-03-20),
15. 9667116 - Generator with brackets with positioning holes for knock pins for axial alignment of a drive shaft and a rotary shaft (2017-05-30),
Sawafuji Electric Co., Ltd. is a Japanese company specializing in the manufacturing of various electrical appliances. They have been in operation since 1934 and are known for their high-quality products and innovative technologies. With a focus on consumer electronics, Sawafuji Electric offers a wide range of products including refrigerators, air conditioners, washing machines, and kitchen appliances. Their commitment to excellence and customer satisfaction has made them a trusted brand in the industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

79 Patents

#4 in Gunma

#1,286 in Japan

#9,318 in the World

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Gunma, Japan

Sawafuji Electric Co., Ltd.

Forward Citations = 876

102 inventors:

goldMedal Tomonori Miura (12 out of 12 patents)

silverMedal Shinji Kambara (10 out of 10 patents)

bronzeMedal Yoshiaki Fujisawa (7 out of 7 patents)

4.  Naoki Akazawa (7 out of 7 patents)

5.  Tatsuya Ikeda (6 out of 6 patents)

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