Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6602603 | Poly(meth)acrylic photochromic coating | Cletus N. Welch, David T. McKeough, Eric M. King | 2003-08-05 |
| 6555028 | Polymeric matrix compatibilized naphthopyrans | Barry Van Gemert | 2003-04-29 |
| 6436525 | Polyanhydride photochromic coating composition and photochromic articles | Cletus N. Welch, Shanti Swarup | 2002-08-20 |
| 6268055 | Photochromic epoxy resin coating composition and articles having such a coating | Cletus N. Welch, John W. Burgman, Debra L. Singer, Shanti Swarup | 2001-07-31 |
| 6187444 | Photochromic polyurethane coating and articles having such a coating | Robert J. Bowles, III, Nancyanne Gruchacz, Shanti Swarup, Jeanine A. Conklin, Robin Hunt | 2001-02-13 |
| 6150430 | Process for adhering a photochromic coating to a polymeric substrate | Kevin J. Stewart | 2000-11-21 |
| 6025026 | Process for producing an adherent polymeric layer on polymeric substrates and articles produced thereby | Robert A. Smith, Kevin J. Stewart, Michael S. Misura | 2000-02-15 |