Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6939487 | Deblocking contact lenses | Michael Nelson Wilde, Yasuo Matsuzawa | 2005-09-06 |
| 5922249 | Ophthalmic lens production process | Dieter Lohmann, Jens Hopken, Angelika Domschke | 1999-07-13 |
| 5805264 | Process for graft polymerization on surfaces of preformed substates to modify surface properties | Robert Allen Janssen, Richard D. Auten, Glenn S. Nomura, Thomas E. Shank | 1998-09-08 |
| 5174929 | Preparation of stable polyvinyl alcohol hydrogel contact lens | Robert Allen Janssen, Ping I. Lee | 1992-12-29 |