Patent US3238276A successfully refreshed from Google Patents.
US3238276A
Expired / Lapsed
US
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Dyeable blends of unsaturated sulfine polymers with acrylonitrile polymers
Assignee: Union Carbide Corp
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Filing: 1961-08-10
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Granted: 1966-03-01
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Combe Edward M La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:14
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08F28/00; C08F8/00; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
DYEABLE FIBER-FORMING COMPOSITION COMPRISING A BLEND OF FIBER-FORMING ACRYLONITRILE POLYMERS CONTAINING AT LEAST ABOUT 35 PERCENT BY WEIGHT OF POLYMERIZED ACRYLONITRILE, TOGETHER WITH FROM ABOUT 1 PERCENT TO ABOUT 30 PERCENT BY TOTAL WEIGHT OF SOLID HOMOPOLYMERS OF ETHYLENICALLY UNSATURATED SULFINES OF THE FORMULA:
Claim 2
Dependent Claim
44 words
DYEABLE FIBER-FORMING COMPOSITION COMPRISING A BLEND OF FIBER-FORMING ACRYLONITRILE POLYMERS CONTAINING AT LEAST ABOUT 35 PERCENT BY WEIGHT OF POLYMERIZED ACRYLONITRILE, TOGETHER WITH FROM ABOUT 1 PERCENT TO ABOUT 30 PERCENT BY TOTAL WEIGHT OF SOLID HOMOPOLYMERS OF ETHYLENICALLY UNSATURATED SULFINES OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |