Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6361932 | Photographic material having enhanced light absorption | Thomas L. Penner, William James Harrison, Margaret J. Helber | 2002-03-26 |
| 6355386 | Liquid crystalline filter dyes for imaging elements | Margaret J. Helber, William James Harrison | 2002-03-12 |