Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6863843 | Naphthopyran compounds, photoresponsive compositions and lenses | Xuzhi Qin, J. Thomas Ippoliti | 2005-03-08 |
| 6500486 | Controlled tintability on mar-resistant coatings | Elaine M. Anderson, Martin L. Hage, Luben Koev | 2002-12-31 |
| 6478988 | Photochromic substituted naphthopyran compounds | J. Thomas Ippoliti | 2002-11-12 |
| 6337409 | Photochromic naphthopyran compounds | Edward A. Travnicek | 2002-01-08 |
| 6113812 | Photochromic articles | — | 2000-09-05 |
| 5869662 | Photochromic benzopyran compounds | — | 1999-02-09 |
| 5847168 | Photochromic compounds | — | 1998-12-08 |
| 5840926 | Photochromic articles | — | 1998-11-24 |
| 5786032 | Coating composition and process for producing coated articles | — | 1998-07-28 |
| 5759450 | Photochromic naphthopyran compounds | Edward A. Travnicek | 1998-06-02 |
| 5705102 | Photochromic spironaphthopyran compounds | Edward A. Travnicek | 1998-01-06 |
| 5702645 | Photochromic chromene derivatives | — | 1997-12-30 |
| 5679805 | Photochromic spironaphthopyran compounds | — | 1997-10-21 |
| 5658502 | Photochromic articles | — | 1997-08-19 |
| 5628935 | Photochromic spironaphthopyran compounds | Edward A. Travnicek | 1997-05-13 |
| 5531935 | Photochromic naphthopyran compounds | Edward A. Travnicek | 1996-07-02 |