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Kawasaki, Japan

Fujitsu Optical Components Limited

USPTO Granted Patents = 238

EPO Patents = 1

Forward Citations = 498

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126 inventors (with patents filed for the assignee):

Masaki Sugiyama (76 out of 117 patents)

Yoshinobu Kubota (24 out of 45 patents)

Masaharu Doi (19 out of 63 patents)

4. Shinji Maruyama (14 out of 22 patents)

5. Kohei Shibata (14 out of 38 patents)

6. Shintaro Takeuchi (13 out of 14 patents)

7. Shuntaro Makino (13 out of 13 patents)

8. Takehito Tanaka (13 out of 28 patents)

9. Yasuhiro Ohmori (11 out of 16 patents)

10. Yoshihiko Yoshida (11 out of 13 patents)

11. Akira Oka (10 out of 10 patents)

12. Teruhiro Kubo (9 out of 9 patents)

13. Seimi Sasaki (9 out of 9 patents)

14. Toshio Ishii (9 out of 31 patents)

15. Shuichi Yasuda (7 out of 7 patents)

Core Competencies:

Optical Communication Apparatus

Optical Modulator

Integrated Photonic Device

Optical Waveguide Element

Optical Transceiver

Wavelength Filter

Optical Amplifier

Optical Transmission Apparatus

Optical Integrated Circuit

Photonic Integrated Circuit

Optical Device Testing Method

Electro-Optic Crystal Waveguide

238 patents: Sort by Forward Citations

1. 12487400 - Optical device, substrate type optical waveguide element, optical communication apparatus, and inter-waveguide transition method (2025-12-02),

2. 12376387 - Semiconductor photodetector, receiver, and integrated optical device (2025-07-29),

3. 12360407 - Optical device and optical communication device (2025-07-15),

4. 12328145 - Optical transmitter and control method of tunable optical filter (2025-06-10),

5. 12326642 - Wavelength filter and laser apparatus (2025-06-10),

6. 12313880 - Optical integrated device, optical integrated circuit wafer, and method of manufacturing the optical integrated device (2025-05-27),

7. 12300973 - Integrated photonic device and photonic integrated circuit using the same (2025-05-13),

8. 12276832 - Optical device, substrate optical waveguide element, and optical communication apparatus (2025-04-14),

9. 12242143 - Optical device and optical communication apparatus (2025-03-04),

10. 12197101 - Optical waveguide device and optical modulator (2025-01-14),

11. 12197054 - Optical device and optical communication apparatus (2025-01-14),

12. 12189220 - Optical modulation element (2025-01-07),

13. 12184338 - Optical 90-degree hybrid (2024-12-31),

14. 12153294 - Optical device having dual waveguides with one being an electro-optic crystal waveguide (2024-11-26),

15. 12085752 - Optical waveguide device and optical integrated circuit that includes optical waveguide device (2024-09-10),

Fujitsu Optical Components Limited is a subsidiary of Fujitsu Limited, specializing in the development, manufacturing, and sales of high-quality optical components used in telecommunications systems. With a focus on innovation and cutting-edge technology, Fujitsu Optical Components offers a wide range of products including transceivers, connectors, and switches. Their optical components are widely used in data centers, metro networks, and telecommunications infrastructure around the world.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

238 Patents

#10 in Kawasaki

#603 in Japan

#3,493 in the World

Kawasaki, Japan

Fujitsu Optical Components Limited

Forward Citations = 498

126 inventors:

Masaki Sugiyama (76 out of 117 patents)

Yoshinobu Kubota (24 out of 45 patents)

Masaharu Doi (19 out of 63 patents)

4. Shinji Maruyama (14 out of 22 patents)

5. Kohei Shibata (14 out of 38 patents)

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