Dihydroperimidine squarylium dyes as antihalation and acutance materials for photographic and photothermographic articles
US5380635A · kind A · utility
31Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/49854
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Dihydroperimidine squarylium dyes have been found to be particularly effective when used in acutance and antihalation systems for photothermographic and photographic articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.