US2984569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of photographic films
Assignee: Gevaert Photo Producten NV
•
Filing: 1955-05-18
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Granted: 1961-05-16
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Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 Huys Roger Florimond
- 👤 Hendricx Serge Pieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/005; G03C1/04; G03C1/7614; G03C2200/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PHOTOGRAPHIC FILM ELEMENT INCLUDING A FILM BASE COMPOSED OF A LINEAR HIGH-POLYMERIC ESTER OF ETHYLENE GLYCOL AND TEREPHTHALIC ACID, A LAYER OF A POLYVINYL BUTYRAL ON AT LEAST ONE SURFACE OF THE FILM BASE, THE POLYVINYL BUTYRAL BEING COMPOSED OF 10-30% VINYL ALCOHOL, 0-10% VINYL ACETATE, AND 60-90% VINYLBUTYRAL, EXPRESSED IN PERCENTAGES OF MONOMERIC ELEMENTS IN THE POLYMER, A GELATIN LAYER ON SAID POLYVINYL BUTYRAL LAYER, AND A GELATIN SILVER HALIDE LAYER ON SAID GELATIN LAYER.
Claim 2
Dependent Claim
77 words
A PHOTOGRAPHIC FILM ELEMENT INCLUDING A FILM BASE COMPOSED OF A LINEAR HIGH-POLYMERIC ESTER OF ETHYLENE GLYCOL AND TEREPHTHALIC ACID, A LAYER OF A POLYVINYL BUTYRAL ON AT LEAST ONE SURFACE OF THE FILM BASE, THE POLYVINYL BUTYRAL BEING COMPOSED OF 10-30% VINYL ALCOHOL, 0-10% VINYL ACETATE, AND 60-90% VINYLBUTYRAL, EXPRESSED IN PERCENTAGES OF MONOMERIC ELEMENTS IN THE POLYMER, A GELATIN LAYER ON SAID POLYVINYL BUTYRAL LAYER, AND A GELATIN SILVER HALIDE LAYER ON SAID GELATIN LAYER.
References Cited (Backward Citations)
CA488535A
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US2146907A
Cited
US2110496A
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US2245218A
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US2698240A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |