Patent US2499392A successfully refreshed from Google Patents.
US2499392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of alpha-acyloxy acrylic acids
Assignee: Eastman Kodak Co
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Filing: 1947-09-19
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Granted: 1950-03-07
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Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 William O Kenyon
- 👤 Cornelius C Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:20
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/73; C07C69/732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR PREPARING AN ESTER OF AN AACYLOXYACRYLIC ACID WHICH COMPRISES REACTING A NITRILE HAVING THE FORMULA:
Claim 2
Dependent Claim
18 words
A PROCESS FOR PREPARING AN ESTER OF AN AACYLOXYACRYLIC ACID WHICH COMPRISES REACTING A NITRILE HAVING THE FORMULA:
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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |