IR-photographic sensitizing dyes
US6461804B1 · kind B1 · utility
5Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Oct 12, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
According to the present invention there is provided a class of IR-sensitizing dyes, comprising two benzoindol rings and at least two sulphonic acid groups corresponding to the general formula I:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.