Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8387224 | Device and method for measuring and machining spectacle lens, spectacle lens manufacturing method, and spectacles manufacturing method | Michio Arai | 2013-03-05 |
| 7980920 | Spectacle lens manufacturing method | Hisanori Akiyama, Michio Arai | 2011-07-19 |
| 6440477 | Method of adding fats and oils to porous fodder | Ryoji Aoyama, Takayuki Ando, Minoru Tanaka | 2002-08-27 |