Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5147396 | Intraocular lens | Mayumi Kageyama, Takeyuki Sawamoto, Hiroshi Sakai | 1992-09-15 |
| 5008354 | Contact lens | Takeyuki Sawamoto, Masashi Nomura | 1991-04-16 |
| 4892402 | Method for making contact lens hydrophilic | Takeyuki Sawamoto, Koichi Ishida, Tetsuro Izumitani | 1990-01-09 |
| 4761438 | Soft contact lens | Shigeo Komiya, Hideyuku Futamura | 1988-08-02 |
| 4650843 | Soft contact lens | Yuuichi Yokoyama, Eiichi Masuhara, Yoshinori Kadoma, Makoto Tsuchiya | 1987-03-17 |
| 4625009 | High-hydration contact lens | Tetsuro Izumitani, Shigeo Komiya, Takeyuki Sawamoto | 1986-11-25 |
| 4528351 | Plastic lens | Yoichi Okubo, Seiichi Yoshimoto | 1985-07-09 |
| 4393184 | Lens having a high refractive index with a low dispersion | Shigeo Komiya, Mitsuo Sugimura | 1983-07-12 |
| 4373076 | Terpolymer with a high refractive index | Mitsuo Sugimura, Shigeo Komiya, Makoto Tsuchiya | 1983-02-08 |
| 4329378 | Method for marking an indication to the lens | Makoto Tsuchiya, Kunio Sasaki | 1982-05-11 |
| 4306780 | Highly refractive copolymer of an ethylinically unsaturated alkylene oxide of bis-phenol-A and an ethylinically unsaturated aromatic compound for lens and a lens prepared therefrom | Makoto Tsuchiya, Shigeo Komiya, Eiichi Masuhara | 1981-12-22 |