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Tokai Optical Co., Ltd.

USPTO Granted Patents = 34

EPO Patents = 32

Trademarks = 6

Forward Citations = 68

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78 inventors (with patents filed for the assignee):

Hirotoshi Takahashi (13 out of 13 patents)

Yuichi Shishino (6 out of 6 patents)

Koji Kawai (6 out of 16 patents)

4. Kotaro Kaneko (6 out of 12 patents)

5. Nobuhiro Kaneko (6 out of 9 patents)

6. Kuniyoshi Okamoto (5 out of 5 patents)

7. Tsuyoshi Fukagawa (5 out of 5 patents)

8. Masaya Suzuki (4 out of 4 patents)

9. Shingo Ono (3 out of 3 patents)

10. Hiroshi Ueno (3 out of 3 patents)

11. Koji Inui (3 out of 6 patents)

12. Yasuyuki Takeshima (3 out of 6 patents)

13. Yuji Kato (3 out of 7 patents)

14. Atsushi Nagao (2 out of 2 patents)

15. Hiroaki Watanabe (2 out of 2 patents)

34 patents: Sort by Forward Citations

1. 12216274 - Method and program for predicting bending in optical products (2025-02-04),

2. 12180190 - Additive for imparting ultraviolet absorbency and/or high refractive index to matrix, and resin member using same (2024-12-31),

3. 11966102 - Spectacle lens and spectacles (2024-04-23),

4. 11945802 - Additive for imparting ultraviolet absorbency and/or high refractive index to matrix, and resin member using same (2024-04-02),

5. 11709292 - Optical plastic product, and plastic spectacle lens and spectacles (2023-07-25),

6. 11668957 - Optical product, plastic spectacle lens, and spectacles (2023-06-06),

7. 11422287 - Plastic spectacle lens and spectacles (2022-08-23),

8. 11401400 - Plastic lens (2022-08-02),

9. 11370780 - Additive for imparting ultraviolet absorbency and/or high refractive index to matrix, and resin member using same (2022-06-28),

10. 11186568 - Additive for imparting ultraviolet absorbency and/or high refractive index to matrix, and resin member using same (2021-11-30),

11. 11072138 - Spectacle lens manufacturing system (2021-07-27),

12. 10874357 - Eye movement measuring device and eye movement analysis system (2020-12-29),

13. 10820823 - Evaluation of inhibitory circuit and use thereof (2020-11-03),

14. 10688739 - Spectacle lens manufacturing system (2020-06-23),

15. 10663634 - ND filter with plastic base material, and ND filter with plastic base material for eyeglasses (2020-05-26),

TOKAI OPTICAL CO., LTD. is a leading manufacturer of high-quality optical products. With a strong focus on innovation and technological advancements, the company has been supplying a wide range of optical lenses and related products to various industries worldwide. Through their expertise and commitment to customer satisfaction, TOKAI OPTICAL has established itself as a trusted and reliable partner in the optical industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

34 Patents

#30 in Aichi

#2,113 in Japan

#19,013 in the World

Tokai Optical Co., Ltd.

Forward Citations = 68

78 inventors:

Hirotoshi Takahashi (13 out of 13 patents)

Yuichi Shishino (6 out of 6 patents)

Koji Kawai (6 out of 16 patents)

4. Kotaro Kaneko (6 out of 12 patents)

5. Nobuhiro Kaneko (6 out of 9 patents)

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