Patent US956507A successfully refreshed from Google Patents.
Patent US2749321A successfully refreshed from Google Patents.
US2749321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions of acrylonitrile vinyl chloride copolymer mixed with polymers of multinuclear aromatic monomers
Assignee: Solutia Inc
•
Filing: 1951-10-26
•
Granted: 1956-06-05
•
Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:25
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08K; C08K5/00; C08K5/16; C08K5/20; C08L33/00; C08L33/18; C08L33/20; C08L39/00; C08L39/04; D; D01; D01F; D01F6/00; D01F6/44; D01F6/48; C08L25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A NEW COMPOSITION OF MATTER, CAPABLE OF BEING FORMED INTO HEAT-STABLE FIBERS AND FILAMENTS, WHICH COMPRISES A BLEND OF FROM TWO TO 35 PARTS BY WEIGHT OF (A) A POLYMER OF THE GROUP CONSISTING OF POLY-N-VINYLCARBAZOLE, POLYVINYLANTHRACENE, POLYVINYLNAPHTHALENE, POLYVINYLPYRENE, POLYVINYLFLUORENE, POLYVINYLPHENOXTHINE, POLYACENAPHTHYLENE, POLYVINYLBIPHENYL, POLYISOPROPENYLBIPHENYL, AND POLYVINYLACENAPHTHLENE, AND FROM 65 TO 98 PARTS OF (B) A COPOLYMER OF FROM 35 TO 70 PERCENT BY WEIGHT OF VINYL CHLORIDE AND AT LEAST 30 PERCENT BY WEIGHT OF ACRYLONITRILE DISSOLVED IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACTAMIDE.
Claim 2
Dependent Claim
90 words
A NEW COMPOSITION OF MATTER, CAPABLE OF BEING FORMED INTO HEAT-STABLE FIBERS AND FILAMENTS, WHICH COMPRISES A BLEND OF FROM TWO TO 35 PARTS BY WEIGHT OF (A) A POLYMER OF THE GROUP CONSISTING OF POLY-N-VINYLCARBAZOLE, POLYVINYLANTHRACENE, POLYVINYLNAPHTHALENE, POLYVINYLPYRENE, POLYVINYLFLUORENE, POLYVINYLPHENOXTHINE, POLYACENAPHTHYLENE, POLYVINYLBIPHENYL, POLYISOPROPENYLBIPHENYL, AND POLYVINYLACENAPHTHLENE, AND FROM 65 TO 98 PARTS OF (B) A COPOLYMER OF FROM 35 TO 70 PERCENT BY WEIGHT OF VINYL CHLORIDE AND AT LEAST 30 PERCENT BY WEIGHT OF ACRYLONITRILE DISSOLVED IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACTAMIDE.
References Cited (Backward Citations)
US2566716A
Cited
US2140048A
Cited
US2072465A
Cited
US2371499A
Cited
US2420330A
Cited
US2476737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |