US2882262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(acryloxyalkyl)- and n-(methacryloxyalkyl)-2-pyrrolidones and polymers thereof
Assignee: Eastman Kodak Co
•
Filing: 1956-05-14
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Granted: 1959-04-14
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Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 Donald A Smith
- 👤 Cornelius C Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:37
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/27; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03F; G03F7/00; G03F7/004; G03F7/008; G03F7/012; G03F7/0125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AN ACRYLIC ESTER HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
AN ACRYLIC ESTER HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
NL61825C
Cited
US2656360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |