US2956882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsion
Assignee: Aeroprojects Inc
•
Filing: 1955-09-13
•
Granted: 1960-10-18
•
Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 Richard C Herold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:05
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A PROCESS FOR PREPARING A SENSITIZED PHOTOGRAPHIC SILVER HALIDE EMULSION, THE STEPS WHICH COMPRISE ADDING TO A RIPENED WASHED SILVER HALIDE A SPEED SENSITIZING AMOUNT OF A WATER-SOLUBLE SALT SELECTED FROM THE CLASS CONSISTING OF THE WATER-SOLUBLE SALTS OF RUBIDIUM AND CESIUM, WITH THE SOLE METALLIC COMPOUNDS PRESENT DURING SAID PROCESS BEING SALTS OF SILVER AND WATER-SOLUBLE SALTS OF ALKALI METALS, AND THEREAFTER AFTER-RIPENING THE RESULTING COMPOSITION.
Claim 2
Dependent Claim
68 words
IN A PROCESS FOR PREPARING A SENSITIZED PHOTOGRAPHIC SILVER HALIDE EMULSION, THE STEPS WHICH COMPRISE ADDING TO A RIPENED WASHED SILVER HALIDE A SPEED SENSITIZING AMOUNT OF A WATER-SOLUBLE SALT SELECTED FROM THE CLASS CONSISTING OF THE WATER-SOLUBLE SALTS OF RUBIDIUM AND CESIUM, WITH THE SOLE METALLIC COMPOUNDS PRESENT DURING SAID PROCESS BEING SALTS OF SILVER AND WATER-SOLUBLE SALTS OF ALKALI METALS, AND THEREAFTER AFTER-RIPENING THE RESULTING COMPOSITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |