For the Inventor, By the Inventor

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Cosel Co., Ltd.

USPTO Granted Patents = 17

EPO Patents = 1

Trademarks = 4

Forward Citations = 77

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24 inventors (with patents filed for the assignee):

Kuniaki Nagahara (7 out of 7 patents)

Masaharu Maesaka (4 out of 4 patents)

Toshio Watanabe (4 out of 4 patents)

4. Toshihisa Miura (3 out of 26 patents)

5. Yuji Hirose (3 out of 3 patents)

6. Kazuhiro Horii (3 out of 3 patents)

7. Katsuhiro Koizumi (3 out of 3 patents)

8. Tatsuya Mano (3 out of 3 patents)

9. Takeshi Usuda (2 out of 2 patents)

10. Yoshiki Matsuo (2 out of 2 patents)

11. Mitsuo Nakada (2 out of 2 patents)

12. Tetsuo Sugimoria (2 out of 2 patents)

13. Takahiro Yoneda (2 out of 2 patents)

14. Yuichi Uozu (2 out of 2 patents)

15. Nobuto Kawataka (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 11176800 - Power supply device (2021-11-16),

2. 10116223 - Switching power supply apparatus capable of achieving soft switching operation (2018-10-30),

3. 9240719 - Switching power supply device (2016-01-19),

4. 8400120 - Switching power supply unit (2013-03-19),

5. 8320145 - Switching power source device and drive method thereof (2012-11-27),

6. 8278896 - Switching power supply device (2012-10-02),

7. 7208926 - Switching signal modulation circuit (2007-04-24),

8. 7116562 - Synchronous rectification switching power supply (2006-10-03),

9. D478309 - Power supply apparatus (2003-08-13),

10. D442914 - Power supply apparatus (2001-05-30),

11. D442913 - Power supply apparatus (2001-05-30),

12. D432080 - Power supply apparatus (2000-10-17),

13. D429215 - Power supply apparatus (2000-08-08),

14. D429214 - Power supply apparatus (2000-08-08),

15. D428851 - Power supply apparatus (2000-08-01),

Cosel Co., Ltd. is a leading manufacturer of power supplies, converters, and related products. With a history dating back to 1969, Cosel has grown to become a trusted provider of high-quality products for a wide range of industries including medical, industrial, and telecommunications. The company is known for its commitment to innovation and reliability, delivering cutting-edge solutions to meet the needs of its global customer base.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

17 Patents

#9 in Toyama 939-0643

#3,159 in Japan

#34,849 in the World

Cosel Co., Ltd.

Forward Citations = 77

24 inventors:

Kuniaki Nagahara (7 out of 7 patents)

Masaharu Maesaka (4 out of 4 patents)

Toshio Watanabe (4 out of 4 patents)

4. Toshihisa Miura (3 out of 26 patents)

5. Yuji Hirose (3 out of 3 patents)

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