US3067035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelatin-anion soap complex dispersion in polyvinyl alcohol photographic emulsions
Assignee: EIDP Inc
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Filing: 1959-04-01
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Granted: 1962-12-04
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Expires: 1979-04-01
Abstract
No abstract record available.
Inventors
- 👤 Oberth Adolf Eduard
- 👤 Shacklett Comer Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF PREPARING A PHOTOGRAPHIC EMULSION WHICH COMPRISES DISPERSING SILVER HALIDE IN AN AQUEOUS GELATIN SOLUTION, ADDING THERETO AN ANION SOAP THEREBY FORMING A GELATIN-ANION SOAP COMPLEX CONTAINING DISPERSED SILVER HALIDE GRAINS AND DISPERSING SAID COMPLEX IN A WATER SOLUBLE POLYVINYL ALCOHOL BINDER IN A PREDOMINANTLY AQUEOUS SOLUTION, SAID POLYVINYL ALCOHOL BINDER PREPARED BY HYDROLYZING A POLYVINYL ESTER TO AN EXTENT OF AT LEAST 80PERCENT.
Claim 2
Independent Claim
66 words
A METHOD OF PREPARING A PHOTOGRAPHIC EMULSION WHICH COMPRISES DISPERSING SILVER HALIDE IN AN AQUEOUS GELATIN SOLUTION, ADDING THERETO AN ANION SOAP THEREBY FORMING A GELATIN-ANION SOAP COMPLEX CONTAINING DISPERSED SILVER HALIDE GRAINS AND DISPERSING SAID COMPLEX IN A WATER SOLUBLE POLYVINYL ALCOHOL BINDER IN A PREDOMINANTLY AQUEOUS SOLUTION, SAID POLYVINYL ALCOHOL BINDER PREPARED BY HYDROLYZING A POLYVINYL ESTER TO AN EXTENT OF AT LEAST 80PERCENT.
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |