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For the Inventor, By the Inventor

Yamanashi-ken, Japan

Citizen Electronics Co., Ltd.


USPTO Granted Patents = 608


Trademarks = 3

Forward Citations = 5,590

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251 inventors (with patents filed for the assignee):

goldMedal Sadato Imai (55 out of 55 patents)

silverMedal Junji Miyashita (47 out of 50 patents)

bronzeMedal Koichi Fukasawa (42 out of 42 patents)

4.  Takashi Akiyama (28 out of 68 patents)

5.  Hirohiko Ishii (20 out of 20 patents)

6.  Nodoka Oyamada (19 out of 19 patents)

7.  Daisaku Okuwaki (19 out of 19 patents)

8.  Shingo Kuriki (19 out of 19 patents)

9.  Takashi Shimura (18 out of 18 patents)

10.  Megumi Horiuchi (17 out of 18 patents)

11.  Tatsuro Yamada (16 out of 16 patents)

12.  Hideyoshi Horie (15 out of 15 patents)

13.  Takashi Iino (15 out of 15 patents)

14.  Atsushi Kuwabara (15 out of 15 patents)

15.  Isao Miyashita (14 out of 14 patents)


Core Competencies:
Light-Emitting Device
Light Emitting Diode
LED Package
Phosphor
Illumination Device
Lighting System
Mobile Device
Electronic Switch
Backlight
Planar Light-Emitting Device
Light Emitting Element
Switch Spring

608 patents:

1. 12396300 - Light-emitting device and method of manufacturing the same (2025-08-19),
2. 12362337 - Light emitting device (2025-07-15),
3. 12268039 - Light-emitting device and manufacturing method therefor (2025-04-01),
4. 12084609 - Light emitting device (2024-09-10),
5. 12034104 - Light emitting device (2024-07-09),
6. 11873435 - Light emitting device (2024-01-16),
7. 11855244 - Light emitting device (2023-12-26),
8. 11841528 - Linear light-emitting device (2023-12-12),
9. 11817530 - Light emitting device (2023-11-14),
10. 11756939 - Light emitting element with particular phosphors (2023-09-12),
11. D995455 - Light emitting diode (2023-08-15),
12. 11697765 - Phosphor and light-emitting equipment using phosphor (2023-07-11),
13. D989011 - Light emitting diode (2023-06-13),
14. 11626546 - LED package and method for manufacturing same (2023-04-11),
15. 11613698 - Illumination device (2023-03-28),
CITIZEN ELECTRONICS CO., LTD. is a renowned electronics company based in Japan. With a strong focus on innovation and cutting-edge technology, the company specializes in the design, development, and manufacturing of a wide range of electronic products. Established in 1930, CITIZEN ELECTRONICS has built a reputation for delivering high-quality and reliable electronic components to various industries. The company's commitment to excellence and customer satisfaction has made it a trusted partner for businesses worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

608 Patents

#1 in Yamanashi-ken

#320 in Japan

#1,572 in the World

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Yamanashi-ken, Japan

Citizen Electronics Co., Ltd.

Forward Citations = 5,590

251 inventors:

goldMedal Sadato Imai (55 out of 55 patents)

silverMedal Junji Miyashita (47 out of 50 patents)

bronzeMedal Koichi Fukasawa (42 out of 42 patents)

4.  Takashi Akiyama (28 out of 68 patents)

5.  Hirohiko Ishii (20 out of 20 patents)

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