Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840035 | Pad transfer printing method for making colored contact lenses | Richard Charles Breitkopf, Steve Yun Zhang | 2023-12-12 |
| 11602910 | Pad transfer printing method for making colored contact lenses | Richard Charles Breitkopf, Steve Yun Zhang | 2023-03-14 |
| 11584097 | Method for making opaque colored silicone hydrogel contact lenses | Steve Yun Zhang, Richard Charles Breitkopf | 2023-02-21 |
| 8292256 | Molds for producing contact lenses | Scott F. Ansell | 2012-10-23 |
| 7875217 | Excess polymer ring removal during ophthalmic lens manufacture | Scott F. Ansell | 2011-01-25 |
| 7833443 | Molds for producing contact lenses | Scott F. Ansell | 2010-11-16 |