Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695843 | Mixtures of symmetrical and unsymmetrical nickel formazan dyes | Derek D. Chapman | 1997-12-09 |
| 5693589 | Thermal imaging recording element | Robert James Perry, Paul A. Zielinski | 1997-12-02 |
| 5672562 | Thermal recording element | Robert James Perry, Paul A. Zielinski | 1997-09-30 |
| 5652091 | Heat bleachable elements having polymeric acid layer adjacent heat bleachable antihalation layer | Robert James Perry | 1997-07-29 |
| 5645910 | Formazan-cyanine copolymers dyes for optical recording layers and elements | Elizabeth G. Burns, Csaba A. Kovacs | 1997-07-08 |