US2613194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber forming solutions
Assignee: Solutia Inc
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Filing: 1950-09-26
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Granted: 1952-10-07
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Expires: 1970-09-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred B Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:56
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08J3/097; C08L; C08L33/00; C08L33/18; C08L33/20; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A FIBER SPINNING SOLUTION COMPRISING A SOLVENT FOR FIBER-FORMING ACRYLONITRILE POLYMERS, POLYMER OF MONOMERIC SUBSTANCES OF WHICH FROM TWO TO TEN PERCENT OF THE TOTAL MONOMER IS A VINYLPYRIDINE AND AT LEAST 80 PERCENT IS ACRYLONITRILE, AND FROM 0.01 TO 3.0 PER CENT BY WEIGHT (BASED ON THE SOLUTION) OF SULFURIC ACID.
Claim 2
Dependent Claim
52 words
A FIBER SPINNING SOLUTION COMPRISING A SOLVENT FOR FIBER-FORMING ACRYLONITRILE POLYMERS, POLYMER OF MONOMERIC SUBSTANCES OF WHICH FROM TWO TO TEN PERCENT OF THE TOTAL MONOMER IS A VINYLPYRIDINE AND AT LEAST 80 PERCENT IS ACRYLONITRILE, AND FROM 0.01 TO 3.0 PER CENT BY WEIGHT (BASED ON THE SOLUTION) OF SULFURIC ACID.
References Cited (Backward Citations)
US2502030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |