Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8652614 | Optical element and method for producing the same | Michito Takahashi | 2014-02-18 |
| 6003338 | Molding method for optical element | Kiyoshi Yamamoto, Takeshi Nomura, Masashi Mashige | 1999-12-21 |
| 5788732 | Optical-device forming method and apparatus | Takeshi Nomura, Nobuyuki Nakagawa, Kiyoshi Yamamoto | 1998-08-04 |
| 5340373 | Method for producing optical element by press molding a blank having a component removed layer and a hydrocarbon coating | — | 1994-08-23 |
| 5168404 | Optical element and glass blank for producing the optical element | Tetsuo Kuwabara, Nobukazu Yogo | 1992-12-01 |