logo

For the Inventor, By the Inventor

Yamanashi, Japan

Citizen Electronics Co., Ltd.


USPTO Granted Patents = 608

% Expired Patents = 29.9


Trademarks = 3

Forward Citations = 5,678

Loading Chart...
Loading Chart...

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 69 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 Diode
LED Package
Phosphor Technologies
Illumination Method
Backlight
Electronic Switch
Lighting System
Push Switch
Planar Light Unit
Linear Light Emitting Device
Semiconductor Light Emitting Device
Mounting Substrates

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., based in Yamanashi, Japan, specializes in the development and manufacturing of advanced light-emitting devices. The company focuses on innovative technologies such as Light Emitting Diodes (LEDs), LED packages, and phosphor technologies, catering to various applications including illumination methods and backlighting solutions. With a commitment to enhancing lighting systems and electronic switches, Citizen Electronics plays a significant role in the evolution of efficient and sustainable lighting technologies.
Profile summary based on public USPTO records.

logo

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

608 Patents

#2 in Yamanashi 400-0862

#329 in Japan

#1,606 in the World

Yamanashi, JP
Yamanashi, Japan

Citizen Electronics Co., Ltd.

Forward Citations = 5,678

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 69 patents)

5.  Hirohiko Ishii (20 out of 20 patents)

Please report any incorrect information to [email protected]
Loading…