Patent US2438371A successfully refreshed from Google Patents.
US2865880A
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Fibers comprising acrylonitrile polymers containing aluminum and silicon oxides
Assignee: Eastman Kodak Co
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Filing: 1954-04-07
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Granted: 1958-12-23
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Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:46
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F20/00; C08F20/02; C08F20/42; C08F20/44; D01F1/00; D01F1/02; D01F1/10; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
FIBERS HAVING IMPROVED DYEING AND STICKING CHARACTERISTICS MADE FROM AN ACYCLIC ACRYLONITRILE POLYMER COMPOSITION SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, N-METHYL METHACRYLAMIDE COPOLYMER; ACRYLONITRILE N-ISOPROPYL ACRYLAMIDE COPOLYMER; POLYACRYLONITRILE; ACRYLONITRILE, VINYL ACETATE COPOLYMER; AND ACRYLONITRILE, N,N-DIETHYL ACRYLAMIDE COPOLYMER AND CONTAINING AL2O3 AND SIO2 IN COLLOIDAL FORM IN AN AMOUNT WITHIN THE RANGE OF 8 TO 15% BY WEIGHT OF THE POLYMER THE AL2O3 BEING PRESENT IN AN AMOUNT OF 50 TO 75% OF THE TOTAL OXIDE MIXTURE.
Claim 2
Dependent Claim
77 words
FIBERS HAVING IMPROVED DYEING AND STICKING CHARACTERISTICS MADE FROM AN ACYCLIC ACRYLONITRILE POLYMER COMPOSITION SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, N-METHYL METHACRYLAMIDE COPOLYMER; ACRYLONITRILE N-ISOPROPYL ACRYLAMIDE COPOLYMER; POLYACRYLONITRILE; ACRYLONITRILE, VINYL ACETATE COPOLYMER; AND ACRYLONITRILE, N,N-DIETHYL ACRYLAMIDE COPOLYMER AND CONTAINING AL2O3 AND SIO2 IN COLLOIDAL FORM IN AN AMOUNT WITHIN THE RANGE OF 8 TO 15% BY WEIGHT OF THE POLYMER THE AL2O3 BEING PRESENT IN AN AMOUNT OF 50 TO 75% OF THE TOTAL OXIDE MIXTURE.
References Cited (Backward Citations)
US2467339A
Cited
GB675627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |