Patent US2545044A successfully refreshed from Google Patents.
US2545044A
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Method of preparing an alpha-methacryloxy propionamide
Assignee: Eastman Kodak Co
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Filing: 1947-11-22
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Granted: 1951-03-13
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Expires: 1967-11-22
Abstract
No abstract record available.
Inventors
- 👤 Delbert D Reynolds
- 👤 William O Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:57
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/02; C07C67/00; C07C67/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR PREPARING AN A-METHACRYLOXY PROPIONAMIDE COMPRISING CONDENSING UNDER ANHYDROUS CONDITIONS METHACRYLYL CHLORIDE WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF LACTAMIDE AND AN N-ALKYL LACTAMIDE WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, IN THE PRESENCE OF ANHYDROUS SODIUM CARBONATE AND IN THE PRESENCE OF ANHYDROUS CALCIUM SULFATE.
Claim 2
Dependent Claim
54 words
A PROCESS FOR PREPARING AN A-METHACRYLOXY PROPIONAMIDE COMPRISING CONDENSING UNDER ANHYDROUS CONDITIONS METHACRYLYL CHLORIDE WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF LACTAMIDE AND AN N-ALKYL LACTAMIDE WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, IN THE PRESENCE OF ANHYDROUS SODIUM CARBONATE AND IN THE PRESENCE OF ANHYDROUS CALCIUM SULFATE.
References Cited (Backward Citations)
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US2117349A
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GB496892A
Cited
US2238030A
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US2251695A
Cited
US2345006A
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US2370055A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |