US2872318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polystyrene film elements and subbing compositions therefor
Assignee: Eastman Kodak Co
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Filing: 1958-02-14
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Granted: 1959-02-03
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Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Starck Clemens Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PHOTOGRAPHIC ELEMENT COMPRISING AN ORIENTED POLYSTYRENE FILM BASE COATED ON BOTH SURFACES WITH A COATING COMPOSITION CONSISTING ESSENTIALLY OF 0.40-1.75% BY WEIGHT OF GELATIN, 0.032-0.140% BY WEIGHT OF CELLULOSE NITRATE, 0.8-3.5% BY WEIGHT OF WATER, 10-30% BY WEIGHT OF ACETONE, 10-30% BY WEIGHT OF ISOPROPYL ALCOHOL, 15-75% BY WEIGHT OF METHYL OXIDE, ACETONYL 5-20% BY WEIGHT OF A HIGHER BOILINGSOLVENT SELECTED FROM THE GROUP CONSISTING OF MESITYL OXIDE, ACETONYL ACETONE, BUTYL CARBITOL ACETATE, AND A MIXTURE OF FROM 70-80% BY WEIGHT OF A-METHYL BENZYL ALCOHOL AND 30-20% BY WEIGHT OF ACETOPHENONE, AND HAVING A GELARINO-SILVER HALIDE EMULSION LAYERCOATED DIRECTLY OVER ONE OF SAID COATED SURFACES OF SAID FILM BASE, AND HAVING A NON-SENSITIVE GELANTIN COMPOSITION COATED DIRECTLY OVER THE OTHER OF SAID COATED SURFACES OF SAID FILM BASE.
Claim 2
Dependent Claim
129 words
A PHOTOGRAPHIC ELEMENT COMPRISING AN ORIENTED POLYSTYRENE FILM BASE COATED ON BOTH SURFACES WITH A COATING COMPOSITION CONSISTING ESSENTIALLY OF 0.40-1.75% BY WEIGHT OF GELATIN, 0.032-0.140% BY WEIGHT OF CELLULOSE NITRATE, 0.8-3.5% BY WEIGHT OF WATER, 10-30% BY WEIGHT OF ACETONE, 10-30% BY WEIGHT OF ISOPROPYL ALCOHOL, 15-75% BY WEIGHT OF METHYL OXIDE, ACETONYL 5-20% BY WEIGHT OF A HIGHER BOILINGSOLVENT SELECTED FROM THE GROUP CONSISTING OF MESITYL OXIDE, ACETONYL ACETONE, BUTYL CARBITOL ACETATE, AND A MIXTURE OF FROM 70-80% BY WEIGHT OF A-METHYL BENZYL ALCOHOL AND 30-20% BY WEIGHT OF ACETOPHENONE, AND HAVING A GELARINO-SILVER HALIDE EMULSION LAYERCOATED DIRECTLY OVER ONE OF SAID COATED SURFACES OF SAID FILM BASE, AND HAVING A NON-SENSITIVE GELANTIN COMPOSITION COATED DIRECTLY OVER THE OTHER OF SAID COATED SURFACES OF SAID FILM BASE.
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) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |