Patent US2860986A successfully refreshed from Google Patents.
US2860986A
Expired / Lapsed
US
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Partially acetalized polyvinyl alcohol containing active halogen
Assignee: Eastman Kodak Co
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Filing: 1956-08-31
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Granted: 1958-11-18
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Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Donald A Smith
- 👤 Cornelius C Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:42
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; C; C08; C08F; C08F8/00; C08F8/30; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
31 words
A PHOTOGRAPHIC EMULSION COMPRISING A MIXTURE OF SILVER HALIDE AND A VINYL ALCOHOL COPOLYMER CONSISTING ESSENTIALLY OF FROM 85 TO 96.5 MOLE PERCENT OF RECURRING VINYL ALCOHOL UNITS OF THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |