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Topcon Corporation

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USPTO Granted Patents = 580

% Expired Patents = 5.2

EPO Patents = 248

Trademarks = 22

Forward Citations = 1,239

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343 inventors (with patents filed for the assignee):

Kaoru Kumagai (52 out of 152 patents)

Nobuyuki Nishita (52 out of 67 patents)

Fumio Ohtomo (51 out of 250 patents)

4. Yasufumi Fukuma (34 out of 122 patents)

5. You Sasaki (30 out of 37 patents)

6. Nobuo Kochi (28 out of 52 patents)

7. Tadayuki Ito (26 out of 52 patents)

8. Tatsuo Yamaguchi (25 out of 64 patents)

9. Tetsuji Anai (23 out of 42 patents)

10. Takeshi Kikuchi (23 out of 40 patents)

11. Zhenguo Wang (23 out of 34 patents)

12. Hitoshi Otani (20 out of 75 patents)

13. Satoshi Yanobe (19 out of 25 patents)

14. Ryoichi Hirose (18 out of 18 patents)

15. Kinpui Chan (17 out of 40 patents)

Core Competencies:

Ophthalmic Apparatus

Surveying Instrument

3D Optical Coherence Tomography

Image Processing

Medical Diagnostics

Fundus Observation

Slit Lamp Microscope

Optical Coherence Tomography

Measurement Device

Non-Destructive Inspection

Anterior Segment Analysis

Eye Testing Equipment

580 patents: Sort by Forward Citations

1. 12774886 - Surveying instrument (2026-10-27),

2. 12762692 - 3D analysis with optical coherence tomography images (2026-10-13),

3. 12751618 - Ophthalmic observation apparatus (2026-10-06),

4. 12740702 - Ophthalmic observation apparatus, method of controlling the same, and recording medium (2026-09-22),

5. D1145605 - Surveying target (2026-09-01),

6. 12724340 - Wide-angle camera device and survey system (2026-09-01),

7. 12716722 - Survey system (2026-08-25),

8. 12716721 - Information processing device, information processing device control method, and storage medium (2026-08-25),

9. 12714303 - Myopia progression analysis device, myopia progression analysis system, myopia progression analysis method, and myopia progression analysis program (2026-08-25),

10. 12711753 - AUTOMATICALLY IDENTIFYING REGIONS OF INTEREST OF AN OBJECT FROM HORIZONTAL IMAGES USING A MACHINE LEARNING GUIDED IMAGING SYSTEM (2026-08-18),

11. 12702292 - Ophthalmologic apparatus (2026-08-11),

12. 12700167 - Slit lamp microscope, ophthalmic information processing apparatus, ophthalmic system, method of controlling slit lamp microscope, and recording medium (2026-08-04),

13. 12690766 - Ophthalmologic apparatus (2026-07-28),

14. 12690765 - Ophthalmologic apparatus (2026-07-28),

15. 12685436 - Ophthalmic apparatus, method of controlling ophthalmic apparatus, and recording medium (2026-07-21),

Company Overview

Topcon Corporation, headquartered in Tokyo, Japan, is a leading developer and manufacturer of advanced ophthalmic apparatus and surveying instruments. The company specializes in innovative technologies such as 3D Optical Coherence Tomography, image processing, and medical diagnostics, focusing on enhancing eye care and vision health. Topcon's product portfolio includes devices for fundus observation and slit lamp microscopy, positioning it as a key player in the medical technology sector, particularly in ophthalmology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

580 Patents

#168 in Tokyo

#347 in Japan

#1,688 in the World

Topcon Corporation

Forward Citations = 1,239

343 inventors:

Kaoru Kumagai (52 out of 152 patents)

Nobuyuki Nishita (52 out of 67 patents)

Fumio Ohtomo (51 out of 250 patents)

4. Yasufumi Fukuma (34 out of 122 patents)

5. You Sasaki (30 out of 37 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Topcon Corporation. Retrieved from https://idiyas.com/company/topcon

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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