Patent US2847389A successfully refreshed from Google Patents.
US2847389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning solution comprising ternary polymers of acrylonitrile dissolved in concentrated aqueous salt solutions
Assignee: Wyeth Holdings LLC
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Filing: 1953-09-11
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Granted: 1958-08-12
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Expires: 1973-09-11
Abstract
No abstract record available.
Inventors
- 👤 Robert D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:31
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A SPINNING SOLUTION COMPRISING (1) A TERNARY POLYMER OF A MIXTURE OF COMONOMERS CONSISTING OF, BY WEIGHT, FROM 2 TO 15% OF AT LEAST ONE ACRYLAMIDE REPRESENTS BY THE FORMULA
Claim 2
Dependent Claim
30 words
A SPINNING SOLUTION COMPRISING (1) A TERNARY POLYMER OF A MIXTURE OF COMONOMERS CONSISTING OF, BY WEIGHT, FROM 2 TO 15% OF AT LEAST ONE ACRYLAMIDE REPRESENTS BY 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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |