Patent US1836103A successfully refreshed from Google Patents.
Patent US2882157A successfully refreshed from Google Patents.
US2882157A
Expired / Lapsed
US
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Treatment of photographic film for static resistance
Assignee: Eastman Kodak Co
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Filing: 1955-08-19
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Granted: 1959-04-14
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Expires: 1975-08-19
Abstract
No abstract record available.
Inventors
- 👤 Crayton B Thompson
- 👤 Duane T Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; G03C1/85; G03C1/89; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A PHOTOGRAPHIC FILM COMPRISING A BASE, AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER ON ONE SURFACE OF THE BASE AND A BACKING LAYER ON THE OPPOSITE SURFACE OF THE BASE, SAID BACKING LAYER CONTAINING A POLYMERIZED QUATERNIZED ALKYL AMINO ACRYLATE COMPOUND HAVING THE RECURRING UNITS:
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |