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Shizuoka, Japan

Hamamatsu-photonics K.k.

USPTO Granted Patents = 2,945

CIPO Patents = 2

EPO Patents = 920

Trademarks = 70

Forward Citations = 17,944

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1,471 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. Daiki Suzuki (68 out of 69 patents)

12. Fumitsugu Fukuyo (68 out of 68 patents)

13. Masashi Ito (62 out of 67 patents)

14. Takashi Inoue (62 out of 88 patents)

15. Masahiro Kotani (61 out of 61 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

2,945 patents: Sort by Forward Citations

1. 12514123 - Actuator device and actuator system (2025-12-30),

2. 12513432 - Photon counting device, photon counting method, and photon counting processing program (2025-12-30),

3. 12512295 - Light guide, electron ray detector, and charged particle device (2025-12-30),

4. 12510797 - Light modulator and light modulator array (2025-12-30),

5. 12510591 - Semiconductor failure analysis device and semiconductor failure analysis method (2025-12-30),

6. 12510458 - Observation device and observation method using a low-speed camera as an imaging unit when observing a moving observation object (2025-12-30),

7. 12509347 - Mirror device manufacturing method and mirror unit manufacturing method (2025-12-30),

8. 12508827 - Active energy irradiation device and inkjet printer (2025-12-30),

9. 12504370 - Observation device and observation method (2025-12-23),

10. 12504348 - Dispersion measurement device and dispersion measurement method (2025-12-23),

11. 12502730 - Laser processing device, and laser processing method (2025-12-23),

12. 12500395 - Quantum cascade laser device (2025-12-16),

13. 12498560 - Optical module (2025-12-16),

14. 12498484 - Ranging image sensor (2025-12-16),

15. 12498335 - X-ray focal spot shape evaluation device and x-ray focal spot shape evaluation method (2025-12-16),

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 30 2025

2,945 Patents

#1 in Shizuoka

#78 in Japan

#307 in the World

Shizuoka, Japan

Hamamatsu-photonics K.k.

Forward Citations = 17,944

1,471 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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