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Koha Co., Ltd.

USPTO Granted Patents = 37

% Expired Patents = 48.6

EPO Patents = 10

Forward Citations = 393

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49 inventors (with patents filed for the assignee):

Kazuo Aoki (13 out of 62 patents)

Encarnacion Antonia Garcia Villora (13 out of 28 patents)

Kiyoshi Shimamura (13 out of 35 patents)

4. Noboru Ichinose (9 out of 28 patents)

5. Yukio Kaneko (7 out of 39 patents)

6. Shinya Watanabe (6 out of 89 patents)

7. Takekazu Masui (6 out of 6 patents)

8. Kimiyoshi Koshi (6 out of 6 patents)

9. Kazuyuki Iizuka (6 out of 20 patents)

10. Masaru Takizawa (4 out of 12 patents)

11. Daisuke Inomata (4 out of 16 patents)

12. Hideaki Kato (4 out of 34 patents)

13. Yu Yamaoka (4 out of 4 patents)

14. Kanae Matsumura (4 out of 11 patents)

15. Shunsuke Ohtsuka (4 out of 6 patents)

Core Competencies:

Light Emitting Device

Phosphor

Single Crystal

Epitaxial Wafer

Gallium Nitride

LED Lamp

Semiconductor Layer

Lighting Device

Display Device

Crystal Layered Structure

Method of Manufacturing

Light Emitting Element

37 patents: Sort by Forward Citations

1. 10975497 - Light emitting device (2021-04-13),

2. 10836961 - Phosphor, method for manufacturing same, and light-emitting device (2020-11-17),

3. 10526721 - Method for growing β-GAO-based single crystal (2020-01-07),

4. 10340429 - Light emitting device (2019-07-02),

5. 10196756 - β-Ga2O3 single-crystal substrate (2019-02-05),

6. 9926647 - [object Object] (2018-03-27),

7. 9926646 - Method for growing B-Ga2O3-based single crystal (2018-03-27),

8. 9915010 - [object Object] (2018-03-13),

9. 9915009 - Method for growing beta-Ga2O3-based single crystal, and beta-Ga2O3-based single crystal substrate and method for producing same (2018-03-13),

10. 9634216 - Light emitting device (2017-04-25),

11. 9431489 - β-Ga2O3-based single crystal substrate (2016-08-30),

12. 9349915 - [object Object] (2016-05-24),

13. 9169980 - Lighting device and display device (2015-10-27),

14. 9166127 - Light source module (2015-10-20),

15. 9153648 - Semiconductor stacked body, method for manufacturing same, and semiconductor element (2015-10-06),

Koha Co., Ltd. is a Tokyo-based company specializing in the development and manufacturing of advanced electronic components and systems. The organization focuses on innovative solutions in the fields of telecommunications and consumer electronics, contributing to the enhancement of connectivity and user experience. With a commitment to research and development, Koha aims to lead in technology advancements that cater to both local and global markets, ensuring high-quality products that meet evolving industry demands.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

37 Patents

#963 in Tokyo

#2,052 in Japan

#18,238 in the World

Koha Co., Ltd.

Forward Citations = 393

49 inventors:

Kazuo Aoki (13 out of 62 patents)

Encarnacion Antonia Garcia Villora (13 out of 28 patents)

Kiyoshi Shimamura (13 out of 35 patents)

4. Noboru Ichinose (9 out of 28 patents)

5. Yukio Kaneko (7 out of 39 patents)

Please report any incorrect information to [email protected]

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