US2563791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions peptized with zein
Assignee: Eastman Kodak Co
•
Filing: 1948-09-03
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Granted: 1951-08-07
•
Expires: 1968-09-03
Abstract
No abstract record available.
Inventors
- 👤 Wesley G Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD OF PREPARING AN OPTICALLY SENSITIZED EMULSION WHICH COMPRISES FORMING ZEINPEPTIZED SILVER HALIDE GRAINS, DISPERSING THE ZEINSILVER HALIDE MASS IN BENZYL ALCOHOL, ADDING OTPICAL SENSITIZER THERETO AND INCORPORATING THE DISPERSION INTO AQUEOUS GELATIN.
Claim 2
Independent Claim
34 words
A METHOD OF PREPARING AN OPTICALLY SENSITIZED EMULSION WHICH COMPRISES FORMING ZEINPEPTIZED SILVER HALIDE GRAINS, DISPERSING THE ZEINSILVER HALIDE MASS IN BENZYL ALCOHOL, ADDING OTPICAL SENSITIZER THERETO AND INCORPORATING THE DISPERSION INTO AQUEOUS GELATIN.
References Cited (Backward Citations)
US2142311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |