US3148985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate base photographic film including multiple layer subbing stratum
Assignee: Agfa Gevaert NV
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Filing: 1960-09-13
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Granted: 1964-09-15
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Expires: 1980-09-13
Abstract
No abstract record available.
Inventors
- 👤 Ossenbrunner Armin
- 👤 Schnell Hermann
- 👤 Klockgether Helfried
- 👤 Geiger Julius
- 👤 Freier Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PHOTOGRAPHIC COMBINATION OF A SUPPORTING FILM AND A SILVER HALIDE EMULSION LAYER CARRIED ON THE FILM, SAID SUPPORTING FILM BEING A HIGH MOLECULAR WEIGHT POLYCARBONATE OF A DI-(MONOHYDROXYARYL) ALKANE CONTAINING RECURRING DI(MONOHYDROXYARYL) ALKANE CARBONATE UNITS, AND THE EMULSION LAYER BEING ADHERED TO THE SURFACE OF THE POLYCARBONATE FILM BY MEANS OF AN INTERVENING SUBBING STRATUM CONSISTING OF A FIRST LAYER OF NITROCELLULOSE AND A BONDING AGENT SELECTED FROMTHE CLASS CONSISTING OF (A) AN EPOXY RESINOUS REACTION PRODUCT OF EPICHLOROHYDRIN WITH A DI(MONOHYDROXYARYL) ALKANE AND (B) A POLYCARBONATE OF A DI(MONOHYDROXYARYL) ALKANE, AND A SECOND LAYER OF GELATIN OVERLYING SAID FIRST LAYER AND CARRYING THE EMULSION LAYER.
Claim 2
Dependent Claim
107 words
A PHOTOGRAPHIC COMBINATION OF A SUPPORTING FILM AND A SILVER HALIDE EMULSION LAYER CARRIED ON THE FILM, SAID SUPPORTING FILM BEING A HIGH MOLECULAR WEIGHT POLYCARBONATE OF A DI-(MONOHYDROXYARYL) ALKANE CONTAINING RECURRING DI(MONOHYDROXYARYL) ALKANE CARBONATE UNITS, AND THE EMULSION LAYER BEING ADHERED TO THE SURFACE OF THE POLYCARBONATE FILM BY MEANS OF AN INTERVENING SUBBING STRATUM CONSISTING OF A FIRST LAYER OF NITROCELLULOSE AND A BONDING AGENT SELECTED FROMTHE CLASS CONSISTING OF (A) AN EPOXY RESINOUS REACTION PRODUCT OF EPICHLOROHYDRIN WITH A DI(MONOHYDROXYARYL) ALKANE AND (B) A POLYCARBONATE OF A DI(MONOHYDROXYARYL) ALKANE, AND A SECOND LAYER OF GELATIN OVERLYING SAID FIRST LAYER AND CARRYING THE EMULSION LAYER.
References Cited (Backward Citations)
US2237017A
Cited
US2874046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |