Patent US2591242A successfully refreshed from Google Patents.
US2591242A
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Process for the manufacture of yarns from hydroxylated polyvinyl compounds
Assignee: TEXTILE and CHEM RES CO Ltd
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Filing: 1950-01-19
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Granted: 1952-04-01
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Expires: 1970-01-19
Abstract
No abstract record available.
Inventors
- 👤 Drisch Nicolas
- 👤 Herrbach Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:25
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/14; Y; Y10; Y10S; Y10S425/00; Y10S425/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE METHOD OF PRODUCING SPUN YARNS FROM AQUEOUS SOLUTIONS OF POLYVINYL ALCOHOL WHICH COMPRISES SPINNING SAID SOLUTION INTO A CONCENTRATED AQUEOUS SALINE SOLUTION, STRETCHING THE SPUN FILAMENTS DURING THE SPINNING OPERATION, WINDING THE YARN THUS PRODUCED ONTO A PACKAGE, DRYING THE PACKAGE TO PRODUCE A YARN HAVING ADHERENT POWDER THEREON, AND REWINDING THE YARN FROM SAID PACKAGE WHILE PASSING THE YARN WITH THE ADHERENT POWDER THEREON OVER STATIONARY FRICTION MEMBERS TO SCRAPE THE ADHERENT POWDER FROM THE SURFACE THEREOF.
Claim 2
Independent Claim
79 words
THE METHOD OF PRODUCING SPUN YARNS FROM AQUEOUS SOLUTIONS OF POLYVINYL ALCOHOL WHICH COMPRISES SPINNING SAID SOLUTION INTO A CONCENTRATED AQUEOUS SALINE SOLUTION, STRETCHING THE SPUN FILAMENTS DURING THE SPINNING OPERATION, WINDING THE YARN THUS PRODUCED ONTO A PACKAGE, DRYING THE PACKAGE TO PRODUCE A YARN HAVING ADHERENT POWDER THEREON, AND REWINDING THE YARN FROM SAID PACKAGE WHILE PASSING THE YARN WITH THE ADHERENT POWDER THEREON OVER STATIONARY FRICTION MEMBERS TO SCRAPE THE ADHERENT POWDER FROM THE SURFACE THEREOF.
References Cited (Backward Citations)
US2257382A
Cited
US2388325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |