US3235634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing microporous fibers and vinyl chloride spinning solutions therefor
Assignee: Rhovyl SA
•
Filing: 1962-02-08
•
Granted: 1966-02-15
•
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 10:22
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)
US1707164A
Cited
US2136464A
Cited
US2777824A
Cited
US3020597A
Cited
US2846727A
Cited
US2922776A
Cited
US2835551A
Cited
US2888415A
Cited
US2894289A
Cited
US2918445A
Cited
US2957843A
Cited
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 |