Patent US3235634A successfully refreshed from Google Patents.
US3235634A
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Process for producing microporous fibers and vinyl chloride spinning solutions therefor
Assignee: Rhovyl SA
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Filing: 1962-02-08
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Granted: 1966-02-15
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Expires: 1982-02-08
Abstract
No abstract record available.
Inventors
- 👤 Michel Fleury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:58
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; D01F6/28; D01F6/32; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
SPINNING SOLUTIONS COMPRSING A VINYL CHLORIDE POLYMER OF VINYL CHLORIDE CONTENT 85-100% IN AN ORGANIC SPINNING SOLVENT THEREFOR AND CONTAINING AS A UNIFORM FINE DISPERESION 2-25% (ON THE WEIGHT OF THE POLYMER) OF A WATER-SOLUBLE ALCOHOL WHICH IS SOLUBLE TO AN EXTENT ABOVE 2% IN THE SPINNING SOLVENT EMPLOYED, IS FREE FROM A TENDENCEY TO LEAVE THE POLYMER WITH THE SPINNING SOLVENT IN A SPINNING OPERATION AND IS CHEMICALLY STABLE UNDER THE CONDITIONS OF THE SPINNING OPERATION, AND IS INCOMPATIBLE WITH THE POLYMER AND INSOLUBEL IN THE SPINNING SOLUTION.
Claim 2
Dependent Claim
89 words
SPINNING SOLUTIONS COMPRSING A VINYL CHLORIDE POLYMER OF VINYL CHLORIDE CONTENT 85-100% IN AN ORGANIC SPINNING SOLVENT THEREFOR AND CONTAINING AS A UNIFORM FINE DISPERESION 2-25% (ON THE WEIGHT OF THE POLYMER) OF A WATER-SOLUBLE ALCOHOL WHICH IS SOLUBLE TO AN EXTENT ABOVE 2% IN THE SPINNING SOLVENT EMPLOYED, IS FREE FROM A TENDENCEY TO LEAVE THE POLYMER WITH THE SPINNING SOLVENT IN A SPINNING OPERATION AND IS CHEMICALLY STABLE UNDER THE CONDITIONS OF THE SPINNING OPERATION, AND IS INCOMPATIBLE WITH THE POLYMER AND INSOLUBEL IN THE SPINNING SOLUTION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |