US2638734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making stable detwisted yarns and fabrics comprising the same
Assignee: Akzo Nobel UK PLC
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Filing: 1947-11-14
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Granted: 1953-05-19
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Expires: 1967-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Mamerto Manahan Cruz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:30
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/09; D06M15/19; D06M15/21; D06M15/327; D06M15/333
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF MAKING A COHERENT YARN HAVING LOW TO ZERO TWIST FROM A RELATIVELY HIGHLY TWISTED YARN WHICH COMPRISES PASSING THE RELATIVELY HIGHLY TWISTED YARN THROUGH AN AQUEOUS SOLUTION CONTAINING 4 TO 8% OF AN ORGANIC FILMFORMING POLYHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL ALCOHOL WHICH IS SOLUBLE IN WATER AT ROOM TEMPERATURE, HYDROXYETHYL CELLULOSE, SODIUM ALGINATE, CALCIUM ALGINATE AND WATER-SOLUBLE ALKYL ETHERS OF CELLULOSE, DRYING THE POLYHYDROXY COMPOUND ON THE YARN TO PROVIDE THE YARN WITH A CONTINUOUS, FIRM AND FLEXIBLE, PLASTIC COATING FILM OF THE POLYHYDROXY COMPOUND, THEN PLACING THE TREATED YARN IN A HIGH HUMIDITY ATMOSPHERE, AND REMOVING AT LEAST SOME OF THE TWIST FROM THE YARN WHILE IN SAID HIGH HUMIDITY ATMOSPHERE WHEREBY THE FILM OF THE POLYHYDROXY COMPOUND REMAINS IN CONTINUOUS CONDITION ON THE YARN THROUGHOUT THE DETWISTING OPERATION.
Claim 2
Independent Claim
138 words
THE METHOD OF MAKING A COHERENT YARN HAVING LOW TO ZERO TWIST FROM A RELATIVELY HIGHLY TWISTED YARN WHICH COMPRISES PASSING THE RELATIVELY HIGHLY TWISTED YARN THROUGH AN AQUEOUS SOLUTION CONTAINING 4 TO 8% OF AN ORGANIC FILMFORMING POLYHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL ALCOHOL WHICH IS SOLUBLE IN WATER AT ROOM TEMPERATURE, HYDROXYETHYL CELLULOSE, SODIUM ALGINATE, CALCIUM ALGINATE AND WATER-SOLUBLE ALKYL ETHERS OF CELLULOSE, DRYING THE POLYHYDROXY COMPOUND ON THE YARN TO PROVIDE THE YARN WITH A CONTINUOUS, FIRM AND FLEXIBLE, PLASTIC COATING FILM OF THE POLYHYDROXY COMPOUND, THEN PLACING THE TREATED YARN IN A HIGH HUMIDITY ATMOSPHERE, AND REMOVING AT LEAST SOME OF THE TWIST FROM THE YARN WHILE IN SAID HIGH HUMIDITY ATMOSPHERE WHEREBY THE FILM OF THE POLYHYDROXY COMPOUND REMAINS IN CONTINUOUS CONDITION ON THE YARN THROUGHOUT THE DETWISTING OPERATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |