US2719138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of acrylonitrile in presence of n-acyl acrylamide and n-acyl methacrylamide polymers
Assignee: Eastman Kodak Co
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Filing: 1952-01-17
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Granted: 1955-09-27
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Expires: 1972-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh J Hagemeyer
- 👤 Milton A Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:12
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS FOR PREPARING A RESINOUS, COMPOSITE ACRYLONITRILE POLYMER COMPRISING HEATING IN THE PRESENCE OF A PEROXIDE POLYMERIZATION CATALYST A MIXTURE CONSISTING OF FROM 60 TO 95 PARTS BY WEIGHT OF ACRYLONITRILE AND FROM 40 TO 5 PARTS BY WEIGHT OF A POLYMER OF AN N-ACYL AMIDE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
51 words
A PROCESS FOR PREPARING A RESINOUS, COMPOSITE ACRYLONITRILE POLYMER COMPRISING HEATING IN THE PRESENCE OF A PEROXIDE POLYMERIZATION CATALYST A MIXTURE CONSISTING OF FROM 60 TO 95 PARTS BY WEIGHT OF ACRYLONITRILE AND FROM 40 TO 5 PARTS BY WEIGHT OF A POLYMER OF AN N-ACYL AMIDE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2090596A
Cited
US2620324A
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 |