Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440335 | Process for molding thermoplastic lenses and, steeply curved and/or thin lenses produced thereby | Robert H. Juul, Michael J. Tuhtan, Martin D. Rolph, Michael Alan Morris, Colin Maurice Perrott +2 more | 2002-08-27 |
| 6284162 | Molding method for manufacturing thin thermoplastic lenses | Michael J. Tuhtan, Robert H. Juul, Martin P. Rolph | 2001-09-04 |
| 5523030 | Method of making a moulded photochromic lens | — | 1996-06-04 |
| 5405557 | Method of making a moulded photochromic lens | — | 1995-04-11 |
| 4839110 | Method of molding using gated dies | — | 1989-06-13 |
| 4836960 | Fabrication of thermoplastic optical components by injection/compression molding | David P. Spector | 1989-06-06 |