Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683628 | Photochromic composition and photochromic resin obtainable by using the same | Hitoshi Mizuno, Tooru Saito, Toshiyuki Miyabayashi, Takashi Kobayakawa | 1997-11-04 |
| 5622784 | Synthetic resin ophthalmic lens having an inorganic coating | Etsuo Okaue, Mikito Nakajima, Takao Mogami | 1997-04-22 |