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Toyo Contact Lens Company, Limited

USPTO Granted Patents = 20

CIPO Patents = 1

Trademarks = 2

Forward Citations = 756

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30 inventors (with patents filed for the assignee):

Kyoichi Tanaka (9 out of 9 patents)

Kouzou Takahashi (5 out of 5 patents)

Toshiharu Yoshikawa (4 out of 8 patents)

4. Mitsuhiro Kanada (4 out of 4 patents)

5. Shoji Ichinohe (3 out of 76 patents)

6. Yasuyuki Kato (3 out of 5 patents)

7. Akira Tsuzuki (3 out of 11 patents)

8. Tatsutoshi Nakajima (3 out of 10 patents)

9. Nobuyuki Toyoshima (3 out of 7 patents)

10. Takanori Shibata (3 out of 6 patents)

11. Masuji Ichihara (3 out of 3 patents)

12. Kenji Hata (2 out of 4 patents)

13. Junichi Nakayama (2 out of 5 patents)

14. Kenichi Isobe (2 out of 33 patents)

15. Nobuyuki Miyajima (2 out of 5 patents)

20 patents: Sort by Forward Citations

1. 4829126 - High water-absorptive soft contact lens (1989-05-09),

2. 4745158 - Highly water-absorptive optical material (1988-05-17),

3. 4738790 - Method for cleaning contact lenses with composition containing (1988-04-19),

4. 4710313 - Detergent composition for contact lenses (1987-12-01),

5. 4649184 - Oxygen permeable soft contact lens material (1987-03-10),

6. 4594401 - Oxygen permeable hard contact lens formed from styrene monomer (1986-06-10),

7. 4547543 - Water-absorptive contact lenses (1985-10-15),

8. 4529747 - Soft contact lenses (1985-07-16),

9. 4525563 - Oxygen permeable soft contact lens composition (1985-06-25),

10. 4500441 - Contact lens cleaning and storage composition (1985-02-19),

11. 4451629 - Contact lens and process for preparing the same (1984-05-29),

12. 4440662 - Cleaning composition for contact lenses (1984-04-03),

13. 4433125 - Oxygen permeable hard contact lens (1984-02-21),

14. 4259202 - Cleaning and preservative solution for contact lenses (1981-03-31),

15. 4235985 - Polymer for contact lens and contact lens made thereof (1980-11-25),

Toyo Contact Lens Company, Limited is a leading manufacturer of contact lenses based in Japan. With over 60 years of experience in the industry, the company offers a wide range of high-quality contact lenses for various vision correction needs. Toyo Contact Lens Company, Limited is committed to innovation, quality, and customer satisfaction.

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

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USPTO Data Jan 1 1976 - Dec 9 2025

20 Patents

#42 in Nagoya

#2,882 in Japan

#30,316 in the World

Toyo Contact Lens Company, Limited

Forward Citations = 756

30 inventors:

Kyoichi Tanaka (9 out of 9 patents)

Kouzou Takahashi (5 out of 5 patents)

Toshiharu Yoshikawa (4 out of 8 patents)

4. Mitsuhiro Kanada (4 out of 4 patents)

5. Shoji Ichinohe (3 out of 76 patents)

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