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Photonics Electronics Technology Research Association

USPTO Granted Patents = 68

EPO Patents = 5

Forward Citations = 188

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56 inventors (with patents filed for the assignee):

Tomoyuki Akiyama (13 out of 52 patents)

Junichi Fujikata (8 out of 52 patents)

Tsuyoshi Horikawa (7 out of 33 patents)

4. Shigeki Takahashi (6 out of 23 patents)

5. Masatoshi Tokushima (6 out of 30 patents)

6. Kenichiro Yashiki (6 out of 9 patents)

7. Keizo Kinoshita (6 out of 16 patents)

8. Tohru Mogami (5 out of 11 patents)

9. Ichiro Ogura (5 out of 18 patents)

10. Koichi Takemura (5 out of 13 patents)

11. Jun Ushida (4 out of 21 patents)

12. Kazuhiko Kurata (4 out of 39 patents)

13. Hideaki Okayama (4 out of 62 patents)

14. Tatsuya Usuki (4 out of 23 patents)

15. Yasuyuki Suzuki (3 out of 105 patents)

Core Competencies:

Optical Communication

Optical Semiconductor Device

Optical Modulator

Photonic Integrated Circuit

Electro-Optic Modulator

Wavelength Division Multiplexing

Optical Transceiver

Optical Waveguide Circuit

Optical Measurement Element

Grating Coupler

Optical Transmission System

Modulated Light Source

68 patents: Sort by Forward Citations

1. 11343009 - Optical communication component, optical transmitter, and control method (2022-05-24),

2. 11307480 - Optical semiconductor device (2022-04-19),

3. 11212214 - Parallel computer system, method of controlling a parallel computer system, and a non-temporary computer-readable medium that stores a program (2021-12-28),

4. 11177623 - Optical device and method of manufacturing the same (2021-11-16),

5. 11137546 - Optical element (2021-10-05),

6. 11128103 - Modulated light source (2021-09-21),

7. 11121796 - Optical add-drop device (2021-09-14),

8. 11119278 - Optical demultiplexer, optical transport apparatus, and method of controlling optical demultiplexing (2021-09-14),

9. 11054675 - Optical modulator and method for manufacturing the same (2021-07-06),

10. 11009726 - Electroab sorption optical modulator (2021-05-18),

11. 10996539 - Electro-optic modulator (2021-05-04),

12. 10958036 - Semiconductor light-emitting device and optical device (2021-03-23),

13. 10911148 - Optical transmission apparatus and optical element (2021-02-02),

14. 10830950 - Optical transmitter-receiver (2020-11-10),

15. 10644822 - Network system (2020-05-05),

PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION (PETRA) is a non-profit organization at the forefront of research and development in the field of photonics and electronics technology. We collaborate with leading industry experts, academic institutions, and government agencies to drive innovation and provide advanced solutions for various industries. Our research areas include semiconductor devices, optoelectronics, optical communication systems, photonics integration, and more. Visit our website to learn more about PETRA and our cutting-edge research initiatives.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

68 Patents

#595 in Tokyo

#1,402 in Japan

#10,594 in the World

Photonics Electronics Technology Research Association

Forward Citations = 188

56 inventors:

Tomoyuki Akiyama (13 out of 52 patents)

Junichi Fujikata (8 out of 52 patents)

Tsuyoshi Horikawa (7 out of 33 patents)

4. Shigeki Takahashi (6 out of 23 patents)

5. Masatoshi Tokushima (6 out of 30 patents)

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