Classes of non-sensitizing infra-red dyes for use in photosensitive elements
US5936086A · kind A · utility
0Cited by
9References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Feb 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/145
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel class of non-sensitizing infra-red dyes derived from heptamethine dyes with indolenine nuclei is disclosed. They are useful as filter-, acutance- or antihalation dyes for photographic elements based on silver halide or for photothermographic elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.