Radiographic materials with antifoggant precursors
US7189502B1 · kind B1 · utility
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14References
24Claims
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Key dates
| Filing date | Oct 3, 2005 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Oct 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/156
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A radiographic material containing tabular silver halide grains also includes an amido compound as an antifoggant precursor that can slowly release an antifoggant over time. These compounds are present in reactive association with the silver halide in tabular silver halide emulsion layers, and are present in an amount of at least 0.5 mmol/mol of silver. The radiographic materials are protected from fog during storage particularly in high temperature environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.