Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6420514 | Transparent polysulfone articles with reduced spurious coloration | Martin L. Hage | 2002-07-16 |
| 6337409 | Photochromic naphthopyran compounds | Frank J. Hughes | 2002-01-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6420514 | Transparent polysulfone articles with reduced spurious coloration | Martin L. Hage | 2002-07-16 |
| 6337409 | Photochromic naphthopyran compounds | Frank J. Hughes | 2002-01-08 |