US2534585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing n-alkyl acrylamides
Assignee: Wyeth Holdings LLC
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Filing: 1948-04-15
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Granted: 1950-12-19
•
Expires: 1968-04-15
Abstract
No abstract record available.
Inventors
- 👤 John G Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:26
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/02; C07C233/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A METHOD OF PRODUCING AN N-ALKYL ACRYLAMIDE WHICH COMPRISES HEATING AN N-ALKYL BETAALKOXYPROPIONAMIDE OF THE FORMULA
Claim 2
Independent Claim
16 words
A METHOD OF PRODUCING AN N-ALKYL ACRYLAMIDE WHICH COMPRISES HEATING AN N-ALKYL BETAALKOXYPROPIONAMIDE OF THE FORMULA
References Cited (Backward Citations)
US2426885A
Cited
US2393000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |