US2611929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing shaped articles from artificial or synthetic fiberor film-forming materials
Assignee: Solutia Inc
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Filing: 1951-06-18
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Granted: 1952-09-30
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Expires: 1971-06-18
Abstract
No abstract record available.
Inventors
- 👤 Howard M Hoxie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:12
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01F; D01F6/00; D01F6/02; D01F6/18; Y; Y10; Y10S; Y10S425/00; Y10S425/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A METHOD OF FORMING ARTIFICIAL AND SYNTHETIC FIBERS AND OTHER SHAPED ARTICLES WHICH COMPRISES CONTINUOUSLY EXTRUDING A SOLUTION OF THE MATERIAL TO BE SHAPED INTO A SETTING BATH COMPRISING A MIXTURE OF THE SOLVENT AND A LIQUID PRECIPITANT FOR THE MATERIAL TO BE SHAPED, WHICH PRECIPITANT IS AN EXTRACTIVE FOR THE SOLVENT, COMTINUOUSLY WITHDRAWING THE SHAPED ARTICLE FROM THE SETTING BATH TO THE ATMOSPHERE, CONTINUOUSLY WASHING THE ARTICLE AS IT ADVANCES FROM THE SETTING BATH, AND ABOVE THE LEVEL OF THE SETTING BATH, WITH A CONFINED STREAM OF LIQUID FLOWING COUNTERCURRENTLY TO THE DIRECTION OF TRAVEL OF THE ARTICLE AND CONSISTING OF THE PRECIPITANT AND AT MOST A MINOR PROPORTION OF THE EXTRUSION SOLVENT, COLLECTING THE LIQUID FROM THE WASHING STEP, AND CONTINUOUSLY DELIVERING LIQUID COLLECTED FROM THE WASHING STEP TO THE SETTING BATH IN A CONTROLLED AMOUNT WHICH IS DEPENDENT ON THE RELATIVE PROPORTION OF PRECIPITANT TO SOLVENT IN THE LIQUID SOLVENT INTRODUCED INTO THE BATH BY EXTRUSION OF THE SOLUTION OF THE MATERIAL TO BE SHAPED, SO THAT THE RELATIVE PROPORTIONS OF PRECIPITANT AND SOLVENT IN THE SETTING BATH ARE THEREBY MAINTAINED SUBSTANTIALLY CONSTANT FROM THE BEGINNING TO THE END OF THE EXTRUSION.
Claim 2
Independent Claim
195 words
A METHOD OF FORMING ARTIFICIAL AND SYNTHETIC FIBERS AND OTHER SHAPED ARTICLES WHICH COMPRISES CONTINUOUSLY EXTRUDING A SOLUTION OF THE MATERIAL TO BE SHAPED INTO A SETTING BATH COMPRISING A MIXTURE OF THE SOLVENT AND A LIQUID PRECIPITANT FOR THE MATERIAL TO BE SHAPED, WHICH PRECIPITANT IS AN EXTRACTIVE FOR THE SOLVENT, COMTINUOUSLY WITHDRAWING THE SHAPED ARTICLE FROM THE SETTING BATH TO THE ATMOSPHERE, CONTINUOUSLY WASHING THE ARTICLE AS IT ADVANCES FROM THE SETTING BATH, AND ABOVE THE LEVEL OF THE SETTING BATH, WITH A CONFINED STREAM OF LIQUID FLOWING COUNTERCURRENTLY TO THE DIRECTION OF TRAVEL OF THE ARTICLE AND CONSISTING OF THE PRECIPITANT AND AT MOST A MINOR PROPORTION OF THE EXTRUSION SOLVENT, COLLECTING THE LIQUID FROM THE WASHING STEP, AND CONTINUOUSLY DELIVERING LIQUID COLLECTED FROM THE WASHING STEP TO THE SETTING BATH IN A CONTROLLED AMOUNT WHICH IS DEPENDENT ON THE RELATIVE PROPORTION OF PRECIPITANT TO SOLVENT IN THE LIQUID SOLVENT INTRODUCED INTO THE BATH BY EXTRUSION OF THE SOLUTION OF THE MATERIAL TO BE SHAPED, SO THAT THE RELATIVE PROPORTIONS OF PRECIPITANT AND SOLVENT IN THE SETTING BATH ARE THEREBY MAINTAINED SUBSTANTIALLY CONSTANT FROM THE BEGINNING TO THE END OF THE EXTRUSION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |