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Shizuoka, Japan

Hamamatsu-photonics K.k.

USPTO Granted Patents = 2,931

CIPO Patents = 2

EPO Patents = 903

Trademarks = 78

Forward Citations = 17,901

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2,091 inventors (with patents filed for the assignee):

Katsumi Shibayama (235 out of 260 patents)

Seiichiro Mizuno (82 out of 83 patents)

Kenshi Fukumitsu (78 out of 78 patents)

4. Takeshi Sakamoto (77 out of 78 patents)

5. Takafumi Yokino (76 out of 95 patents)

6. Takayuki Ohmura (74 out of 74 patents)

7. Masaharu Muramatsu (73 out of 73 patents)

8. Tomofumi Suzuki (72 out of 72 patents)

9. Hideki Shimoi (69 out of 69 patents)

10. Hiroyuki Kyushima (69 out of 74 patents)

11. Fumitsugu Fukuyo (68 out of 68 patents)

12. Daiki Suzuki (66 out of 67 patents)

13. Masashi Ito (62 out of 67 patents)

14. Masahiro Kotani (61 out of 61 patents)

15. Naoki Uchiyama (61 out of 85 patents)

Core Competencies:

Semiconductor Devices

Intra-Oral Imaging

Laser Processing

Microparticle Trapping

Solid-State Imaging

Optical Detection

X-Ray Imaging

Spectroscopic Modules

Light-Emitting Elements

Measurement Devices

Brain Measurement

Charged Particle Detection

2,931 patents: Sort by Forward Citations

1. D1104802 - Spectrometer (2025-12-09),

2. D1104801 - Spectrometer (2025-12-09),

3. D1104800 - Spectrometer (2025-12-09),

4. D1104799 - Spectrometer (2025-12-09),

5. D1104798 - Spectrometer (2025-12-09),

6. D1104797 - Spectrometer (2025-12-09),

7. D1104796 - Spectrometer (2025-12-09),

8. 12495641 - Light-emitting element, optical detection module, manufacturing method for light-emitting element, and scanning electron microscope (2025-12-09),

9. 12494396 - Manufacturing method of semiconductor device (2025-12-09),

10. 12492990 - Spectroscopic measurement device (2025-12-09),

11. 12488988 - Semiconductor device and method for manufacturing semiconductor device (2025-12-02),

12. 12481140 - Sample observation device and sample observation method with planar light having different wavelengths (2025-11-25),

13. 12478341 - Intra-oral imaging system and imaging apparatus (2025-11-25),

14. 12476435 - Semiconductor laser element, semiconductor laser device, and method for manufacturing semiconductor laser element (2025-11-18),

15. 12476156 - Semiconductor chip and method for manufacturing the same (2025-11-18),

Hamamatsu Photonics is a leading manufacturer of optical sensors, detectors, and instruments for a wide range of applications. With an extensive product portfolio and expertise in photonics technologies, the company offers innovative solutions for various industries including medical, scientific research, industrial, and automotive. Hamamatsu Photonics is committed to delivering high-quality products, driving technological advancements, and contributing to the progress of society through photonics.

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

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USPTO Data Jan 1 1976 - Dec 9 2025

2,931 Patents

#1 in Shizuoka

#78 in Japan

#309 in the World

Shizuoka, Japan

Hamamatsu-photonics K.k.

Forward Citations = 17,901

2,091 inventors:

Katsumi Shibayama (235 out of 260 patents)

Seiichiro Mizuno (82 out of 83 patents)

Kenshi Fukumitsu (78 out of 78 patents)

4. Takeshi Sakamoto (77 out of 78 patents)

5. Takafumi Yokino (76 out of 95 patents)

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