US3586508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrapolymer subbed photographic film
Assignee: Eastman Kodak Co
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Filing: 1967-11-30
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Granted: 1971-06-22
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Expires: 1987-11-30
Abstract
Abstract THE DISADVANTAGES ENCOUNTERED IN THE USE OF SUBBING OR U-COAT COMPOSITIONS COMPRISING RELATIVELY LARGE PROPORTIONS (ABOVE 35%) OF VINYLIDENE CHLORIDE ARE OVERCOME BY THE USE OF A HALOALKYL ACRYLATE, VINYLIDENE CHLORIDE, ALKYL ACRYLATE, OR METHACRYLATE, AND ITACONIC ACID TETRAPOLYMER WHICH PROVIDES EXCELLENT ADHESION WHILE PERMITTING A REDUCTION OF THE VINYLIDENE CHLORIDE CONTENT OF THE SUBBING COMPOSITION TO SUBSTANTIALLY BELOW 35% (I.E., BELOW ABOUT 25%).
Inventors
- 👤 William Frank Fowler Jr
- 👤 Gerhard Klose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:51
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2433/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 0
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |