US3418131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stabilizing the background in light developable silver halide emulsions using thiazole containing compounds
Assignee: EIDP Inc
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Filing: 1966-02-01
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Granted: 1968-12-24
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Expires: 1986-02-01
Abstract
No abstract record available.
Inventors
- 👤 Bigelow John Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:59
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR MAKING A LIGHT-DEVELOPABLE, DIRECTWRITING SILVER HALIDE EMULSION WHICH COMPRISES (1) ADMIXING A WATER-SOLUBLE SILVER SALT WITH AN ACIDIFIED AQUEOUS SOLUTION OF A WATER-SOLUBLE CHLORIDE CONTAINING A WATER-PERMEABLE ORGANIC COLLOID BINDING AGENT, (2) ADDING THERETO, AN ORGANIC SOVENT SOLUTION CONTAINING FROM 0.001 TO ABOUT 0.8 MOLE PRCENT BASED ON THE SILVER OF (A) A THIAZOLE COMPOUND CONTAINING AT LEAST ONE OF THE NUCLEI:
Claim 2
Dependent Claim
65 words
A PROCESS FOR MAKING A LIGHT-DEVELOPABLE, DIRECTWRITING SILVER HALIDE EMULSION WHICH COMPRISES (1) ADMIXING A WATER-SOLUBLE SILVER SALT WITH AN ACIDIFIED AQUEOUS SOLUTION OF A WATER-SOLUBLE CHLORIDE CONTAINING A WATER-PERMEABLE ORGANIC COLLOID BINDING AGENT, (2) ADDING THERETO, AN ORGANIC SOVENT SOLUTION CONTAINING FROM 0.001 TO ABOUT 0.8 MOLE PRCENT BASED ON THE SILVER OF (A) A THIAZOLE COMPOUND CONTAINING AT LEAST ONE OF THE NUCLEI:
References 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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |