Photographic compositions containing an admixture of organic and inorganic silver salts
Abstract
Abstract PHOTOGRAPHIC COMPOSITIONS ARE DISCLOSED WHICH COMPRISE AN ADMIXTURE OF AN ORGANIC SILVER SALT AND AN INORGANIC SILVER SALT WHEREIN THE CRYSTALS OF SAID INORGANIC SILVER SALT HAVE BEEN FORMED IN THE PRESENCE OF AN AMPHIPHILIC COPOLYMERIC SILVER HALIDE PEPTIZER. IN CERTAIN EMBODIMENTS, THE AMPHIPHILIC COPOLYMER COMPRISES UNITS OF A (N,N-DIALKYLAMINO)ALKYL ACRYLATE. IN ANOTHER ASPECT, A PROCESS IS DISCLOSED FOR FORMING A PHOTOGRAPHIC COMPOSITION WHICH COMPRISES (1) FORMING INORGANIC SILVER SALT CRYSALS IN A LIQUID MEDIUM IN THE PRESENCE OF AN AMPHIPHILIC COPOLYMER WHICH IS A SILVER HALIDE PEPTIZER AND (2) MIXING SAID INORGANIC SILVER SALT CRYSTALS WITH AN ORGANIC SILVER SALT IN AN ORGANIC LIQUID MEDIUM.
Inventors
- 👤 Ronald Harris Ericson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |