US3216825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film element comprising butadiene polymeric coatings on polyethylene and other polymeric hydrocarbons
Assignee: Eastman Kodak Co
•
Filing: 1961-02-23
•
Granted: 1965-11-09
•
Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PHOTOGRAPHIC FILM PRODUCT COMPRISED OF A HYDROPHOBIC POLYHYDROCARBON FILM SUPPORT, A LYER ON THE FILM SUPPORT COMPRISED OF A CROSS-LINKED BUTADIENE POLYMER CONTAINING AT LEAST ABOUT 50% BY WEIGHT OF BUTADIENE AND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 7,000 TO 16,000, AND A LIGHT SENSITIVE LAYER SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL ALCOHOL SILVER HALIDE PHOTOGRAPHIC EMULSION LAYER AND A GELATINO SILVER HALIDE PHOTOGRAPHIC EMULSION LAYER.
Claim 2
Dependent Claim
70 words
A PHOTOGRAPHIC FILM PRODUCT COMPRISED OF A HYDROPHOBIC POLYHYDROCARBON FILM SUPPORT, A LYER ON THE FILM SUPPORT COMPRISED OF A CROSS-LINKED BUTADIENE POLYMER CONTAINING AT LEAST ABOUT 50% BY WEIGHT OF BUTADIENE AND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 7,000 TO 16,000, AND A LIGHT SENSITIVE LAYER SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL ALCOHOL SILVER HALIDE PHOTOGRAPHIC EMULSION LAYER AND A GELATINO SILVER HALIDE PHOTOGRAPHIC EMULSION LAYER.
References Cited (Backward Citations)
US2957786A
Cited
US1623500A
Cited
US2537114A
Cited
US2689197A
Cited
US2676121A
Cited
US2773769A
Cited
US2756150A
Cited
US2918194A
Cited
US2922723A
Cited
US3035933A
Cited
US3013926A
Cited
US2875056A
Cited
US2999769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |