Photographic element containing improved pyrazolotriazole coupler
US7153641B2 · kind B2 · utility
0Cited by
8References
16Claims
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Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jun 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3835
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A photographic element comprising a light-sensitive silver halide emulsion layer containing a 1H-pyrazolo[1,5-b][1,2,4]triazole coupler represented by structure (I):wherein
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.