US2632748A
Expired / Lapsed
US
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Mixtures comprising acrylonitrile polymers and resinous polyamines containing amide groups
Assignee: Eastman Kodak Co
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Filing: 1951-04-18
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Granted: 1953-03-24
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Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; C; C08; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A SOLUTION OF A RESINOUS COMPOSITION CONSISTING OF A MIXTURE OF FROM 70 TO 90 PARTS BY WEIGHT OF A POLYMER CONTAINING AT LEAST 70 PERCENT BY WEIGHT OF ACRYLONITRILE UNITS, AND FROM 30 TO 10 PARTS BY WEIGHT OF A RESINOUS, LINEAR POLYMER OBTAINED BY CONDENSING AT FROM 130* TO 240* C. EQUIMOLAR PROPORTIONS OF (1) A COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2374354A
Cited
US2404714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |