US2719141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydantoin esters of maleic anhydride copolymers
Assignee: Eastman Kodak Co
•
Filing: 1954-07-07
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Granted: 1955-09-27
•
Expires: 1974-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:42
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
A RESINOUS ESTER COPOLYMER COMPRISING THE RECURRING STRUCTURAL UNITS:
References Cited (Backward Citations)
US2527821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |