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Tomey Corporation

USPTO Granted Patents = 66

% Expired Patents = 12.1

EPO Patents = 49

Trademarks = 2

Forward Citations = 224

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48 inventors (with patents filed for the assignee):

Chihiro Kato (19 out of 19 patents)

Keiichiro Okamoto (19 out of 19 patents)

Yuji Nozawa (13 out of 13 patents)

4. Masahiro Yamanari (11 out of 11 patents)

5. Takashi Kamo (7 out of 7 patents)

6. Tsutomu Ohmori (7 out of 7 patents)

7. Satoshi Sugiyama (6 out of 10 patents)

8. Naoko Hara (6 out of 6 patents)

9. Risa Higashita (5 out of 5 patents)

10. Guangchun Bian (4 out of 4 patents)

11. Fushi Li (4 out of 4 patents)

12. Nobuyori Aoki (3 out of 3 patents)

13. Shinji Ishiguro (3 out of 3 patents)

14. Toshiharu Morino (3 out of 3 patents)

15. Kota Totani (3 out of 3 patents)

Core Competencies:

Ophthalmic Device

Optical Coherence Tomography

Image Processing

Eye Refractive Power

Tomographic Imaging

Anterior Eye Imaging

Cornea Imaging

Speed Measuring

Multi-Channel Technology

Calibration Methods

Optometric Instruments

Contact Lens Technology

66 patents: Sort by Forward Citations

1. 12727759 - Ophthalmic device (2026-09-08),

2. 12569137 - Ophthalmic device (2026-03-10),

3. 12543945 - Image processing device and ophthalmic device provided with the same (2026-02-10),

4. 12467736 - Signal processing device, OCT device, signal processing method, and program (2025-11-11),

5. 12458221 - Tomographic image processing device and program (2025-11-04),

6. 12376743 - Ophthalmic device (2025-08-05),

7. 12207873 - Optical coherence tomographic device (2025-01-28),

8. 12059209 - Optical coherence tomographic device and non-transitory computer-readable recording medium storing computer-readable instructions for optical coherence tomographic device (2024-08-13),

9. 11857255 - Ophthalmic apparatus (2024-01-02),

10. 11659992 - Ophthalmic apparatus (2023-05-30),

11. 11642019 - Ophthalmic device (2023-05-09),

12. 11478146 - Optical coherence tomographic device (2022-10-25),

13. 11369265 - Ophthalmic apparatus (2022-06-28),

14. 11363947 - Optical coherence tomographic device and light source (2022-06-21),

15. 11311191 - Ophthalmic apparatus (2022-04-26),

Company Overview

Tomey Corporation, headquartered in Nagoya, Japan, specializes in the development and manufacturing of advanced ophthalmic devices. The company focuses on innovative technologies such as Optical Coherence Tomography (OCT), image processing, and various imaging techniques for the anterior eye and cornea. With a commitment to enhancing eye care, Tomey integrates speed measuring and eye refractive power assessments into its product offerings, positioning itself as a leader in the ophthalmic industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

66 Patents

#22 in Nagoya

#1,458 in Japan

#11,167 in the World

Tomey Corporation

Forward Citations = 224

48 inventors:

Chihiro Kato (19 out of 19 patents)

Keiichiro Okamoto (19 out of 19 patents)

Yuji Nozawa (13 out of 13 patents)

4. Masahiro Yamanari (11 out of 11 patents)

5. Takashi Kamo (7 out of 7 patents)

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

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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