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Kanagawa, Japan

Lumentum Japan, Inc.

USPTO Granted Patents = 66

Forward Citations = 41

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67 inventors (with patents filed for the assignee):

Atsushi Nakamura (12 out of 71 patents)

Shigetaka Hamada (8 out of 8 patents)

Koichiro Adachi (7 out of 59 patents)

4. Hiroshi Hamada (7 out of 64 patents)

5. Yasushi Sakuma (7 out of 17 patents)

6. Takayuki Nakajima (7 out of 9 patents)

7. Osamu Kagaya (6 out of 82 patents)

8. Daisuke Noguchi (6 out of 85 patents)

9. Shunya Yamauchi (6 out of 10 patents)

10. Yoshihiro Nakai (6 out of 45 patents)

11. Ryosuke Nakajima (6 out of 6 patents)

12. Kouji Nakahara (5 out of 28 patents)

13. Takashi Toyonaka (5 out of 12 patents)

14. Shigehisa Tanaka (5 out of 21 patents)

15. Hideaki Asakura (5 out of 6 patents)

Core Competencies:

Semiconductor Optical Device

Electro-Absorption Modulator

Optical Semiconductor Device

Optical Module

Semiconductor Laser

Optical Communication Module

Photoelectric Conversion Element

Optical Transceiver Module

Differential Circuit Board

Heater-Integrated Optical Device

Buried-Type Semiconductor Device

Optical Subassembly

66 patents: Sort by Forward Citations

1. 12283793 - Semiconductor optical device (2025-04-21),

2. 12272929 - Optical semiconductor device (2025-04-08),

3. 12261412 - Electro-absorption modulator (2025-03-25),

4. 12218480 - Semiconductor optical amplifier integrated laser (2025-02-04),

5. 12126138 - Optical semiconductor device and semiconductor light-emitting device (2024-10-22),

6. 12100929 - Semiconductor optical device and method for manufacturing the same (2024-09-24),

7. 12082336 - Differential circuit board and semiconductor light emitting device (2024-09-03),

8. 12046870 - Optical semiconductor device (2024-07-23),

9. 12040596 - Optical semiconductor device, optical subassembly, and optical module (2024-07-16),

10. 12027823 - Semiconductor laser (2024-07-02),

11. 12027822 - Optical semiconductor device (2024-07-02),

12. 11916161 - Semiconductor light-receiving element (2024-02-27),

13. 11909170 - Semiconductor light emitting device and optical subassembly (2024-02-20),

14. 11880098 - Semiconductor optical device (2024-01-23),

15. 11817674 - Semiconductor optical device and method for manufacturing the same (2023-11-14),

Lumentum Japan, Inc. is a leading provider of innovative optical and photonic products. With a focus on advanced optical technologies, Lumentum Japan delivers solutions for telecommunications, data communications, and consumer electronics. Their products include laser diodes, photodetectors, optical amplifiers, and fiber optics. Lumentum Japan is committed to delivering high-quality products and cutting-edge solutions to meet the demands of various industries.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

66 Patents

#45 in Kanagawa

#1,429 in Japan

#10,869 in the World

Kanagawa, Japan

Lumentum Japan, Inc.

Forward Citations = 41

67 inventors:

Atsushi Nakamura (12 out of 71 patents)

Shigetaka Hamada (8 out of 8 patents)

Koichiro Adachi (7 out of 59 patents)

4. Hiroshi Hamada (7 out of 64 patents)

5. Yasushi Sakuma (7 out of 17 patents)

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