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For the Inventor, By the Inventor

Itabashi-ku, Japan

Kabushiki Kaisha Topcon


USPTO Granted Patents = 1,033


Trademarks = 22

Forward Citations = 10,974

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661 inventors (with patents filed for the assignee):

goldMedal Fumio Ohtomo (178 out of 250 patents)

silverMedal Kaoru Kumagai (96 out of 152 patents)

bronzeMedal Yasufumi Fukuma (79 out of 115 patents)

4.  Hitoshi Otani (53 out of 75 patents)

5.  Jun-ichi Kodaira (45 out of 51 patents)

6.  Kunihiro Hayashi (44 out of 45 patents)

7.  Kazuki Osaragi (42 out of 47 patents)

8.  Mitsuo Ishii (42 out of 67 patents)

9.  Toshifumi Mihashi (39 out of 47 patents)

10.  Masahiro Ohishi (34 out of 40 patents)

11.  Hisashi Tsukada (33 out of 45 patents)

12.  Masayuki Momiuchi (30 out of 33 patents)

13.  Masahiro Akiba (30 out of 36 patents)

14.  Tsutomu Kikawa (27 out of 30 patents)

15.  Takefumi Hayashi (25 out of 31 patents)


Core Competencies:
Blood Flow Measurement
OCT Angiography
Ophthalmologic Microscope
Phase Stabilized Optical Coherence Tomography
Ophthalmic Examination Support
Visual Function Testing
Fundus Imaging
Optometry Apparatus
Geographic Atrophy Detection
Laser Treatment Apparatus
Electro-Optical Distance Meter
Optical Image Measurement

1,033 patents:

1. 11678796 - Blood flow measurement apparatus (2023-06-20),
2. 11481897 - OCT angiography calculation with optimized signal processing (2022-10-25),
3. 10980416 - Blood flow measurement apparatus (2021-04-20),
4. 10932665 - Ophthalmologic microscope system (2021-03-02),
5. 10905323 - Blood flow measurement apparatus (2021-02-02),
6. 10820803 - Patient management system and patient management server (2020-11-03),
7. 10788310 - Methods and apparatus for phase stabilized swept-source optical coherence tomography (SS-OCT) including rescaling and dynamic range enhancement (2020-09-29),
8. 10758123 - Ophthalmological microscope system (2020-09-01),
9. 10719933 - OCT angiography calculation with optimized signal processing (2020-07-21),
10. 10705225 - Preparation system for surveying operation (2020-07-07),
11. 10690497 - Surveying instrument including a reflective prism mounted on a movable part (2020-06-23),
12. 10670493 - Safety diagnosis system for structure (2020-06-02),
13. 10627212 - Swept-source optical coherence tomography (SS-OCT) phase stabilization with reference signal calibration (2020-04-21),
14. 10602129 - Image acquiring device and image acquiring system (2020-03-24),
15. 10548472 - Ophthalmic examination support system, ophthalmic examination support server and ophthalmic examination support device (2020-02-04),
KABUSHIKI KAISHA TOPCON is a Japanese multinational company specializing in positioning, measurement, and imaging technology for various industries including surveying, construction, agriculture, infrastructure, and healthcare. With a commitment to innovation and advanced solutions, TOPCON provides high-quality devices, software, and services that enable precise and efficient operations. Through its cutting-edge technologies, the company aims to contribute to the improvement of global infrastructure and people's lives.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

1,033 Patents

#1 in Itabashi-ku

#217 in Japan

#952 in the World

...
Itabashi-ku, Japan

Kabushiki Kaisha Topcon

Forward Citations = 10,974

661 inventors:

goldMedal Fumio Ohtomo (178 out of 250 patents)

silverMedal Kaoru Kumagai (96 out of 152 patents)

bronzeMedal Yasufumi Fukuma (79 out of 115 patents)

4.  Hitoshi Otani (53 out of 75 patents)

5.  Jun-ichi Kodaira (45 out of 51 patents)

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