Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324627 | Tetra-alkylammonium phenylsulfonylacetate thermal-dye-bleach agents | Dian E. Stevenson, Mark P. Kirk, Sylvia A. Farnum, William C. Frank, Randall H. Helland +7 more | 1994-06-28 |
| 5314795 | Thermal-dye-bleach construction comprising a polymethine dye and a thermal carbanion-generating agent | Randall H. Helland, Sylvia A. Farnum, Mark P. Kirk, Jonathan P. Kitchin, Roger A. Mader +6 more | 1994-05-24 |
| 5262082 | Ferroelectric liquid crystal compounds having perfluoroether terminal portions | Eugene P. Janulis, Gilbert C. Johnson, Patricia M. Savu | 1993-11-16 |