For the Inventor, By the Inventor

Enter assignee name

Copal Electronics Co., Ltd.

USPTO Granted Patents = 12

Forward Citations = 73

Loading Chart...

Loading Chart...

20 inventors (with patents filed for the assignee):

Akiyoshi Takahashi (2 out of 3 patents)

Atsuo Yamazaki (2 out of 2 patents)

Kachu Ishizuka (2 out of 2 patents)

4. Hiroki Matsushita (2 out of 2 patents)

5. Nakazo Ariyama (2 out of 2 patents)

6. Tsuneo Horie (2 out of 2 patents)

7. Masahiko Igarashi (2 out of 2 patents)

8. Atsushi Okazaki (2 out of 2 patents)

9. Hiroshi Ohtake (2 out of 2 patents)

10. Masaru Watanabe (2 out of 2 patents)

11. Hiroshi Takano (1 out of 13 patents)

12. Takeshi Hijiya (1 out of 2 patents)

13. Toshiaki Kaba (1 out of 1 patent)

14. Kenji Sakaguchi (1 out of 1 patent)

15. Isao Ohkawa (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 5997180 - Circumferential flow type dynamic pressure bearing (1999-12-07),

2. 5746515 - Dynamic-pressure gas bearing (1998-05-05),

3. 4894500 - Rotary selector switch (1990-01-16),

4. 4839627 - Variable resistor (1989-06-13),

5. 4832277 - Fishing reel (1989-05-23),

6. 4807239 - Drive and control circuit for laser diode (1989-02-21),

7. 4799628 - Level winder for double-bearing fishing reel (1989-01-24),

8. 4788393 - DIP rotary code switch (1988-11-29),

9. 4787723 - Ultra-wide angle F-.theta. lens system (1988-11-29),

10. 4771964 - Fishing reel (1988-09-20),

11. 4712084 - Potentiometer (1987-12-08),

12. 4627303 - Variable resistance device (1986-12-09),

Copal Electronics Co., Ltd. is a leading manufacturer of electronic components and sensors. With over 50 years of experience in the industry, we offer a wide range of high-quality products including potentiometers, switches, and sensors for various applications. Our commitment to innovation and quality has made us a trusted partner for many industries worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

12 Patents

#1,519 in Tokyo

#3,833 in Japan

#46,692 in the World

Copal Electronics Co., Ltd.

Forward Citations = 73

20 inventors:

Akiyoshi Takahashi (2 out of 3 patents)

Atsuo Yamazaki (2 out of 2 patents)

Kachu Ishizuka (2 out of 2 patents)

4. Hiroki Matsushita (2 out of 2 patents)

5. Nakazo Ariyama (2 out of 2 patents)

Please report any incorrect information to support@idiyas.com

Loading…