US3365767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making stretch yaens and fabrics
Assignee: Courtaulds North America Inc
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Filing: 1964-04-28
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Granted: 1968-01-30
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Expires: 1984-04-28
Abstract
No abstract record available.
Inventors
- 👤 James E Brown
- 👤 Taylor William Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:30
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0286; D02G1/0293; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3008; Y10T442/3024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
A METHOD OF MAKING A STRETCHY YARN WHICH COMPRISES CONTACTING A CELLULOSE YARN HAVING AT LEAST 2 PLIES WITH A CELLULOSE SWELLING AGENT EQUIVALENT TO AN AQUEOUS SOLUTION OF 5 TO 40% SODIUM HYDROXIDE, IN THE ABSENCE OF TENSION, AND THEN TWISTING THE YARN IN THE DIRECTION OPPOSITE TO ITS PLY BEYOND THE POINT OF NO TWIST IN THE ORIGINAL PLIED YARN.
Claim 2
Independent Claim
62 words
A METHOD OF MAKING A STRETCHY YARN WHICH COMPRISES CONTACTING A CELLULOSE YARN HAVING AT LEAST 2 PLIES WITH A CELLULOSE SWELLING AGENT EQUIVALENT TO AN AQUEOUS SOLUTION OF 5 TO 40% SODIUM HYDROXIDE, IN THE ABSENCE OF TENSION, AND THEN TWISTING THE YARN IN THE DIRECTION OPPOSITE TO ITS PLY BEYOND THE POINT OF NO TWIST IN THE ORIGINAL PLIED YARN.
Claim 3
Independent Claim
94 words
A METHOD FOR MAKING A STRETCH FABRIC WHICH COMPRISES TREATING A MULTI-PLY YARN CONSITNG ESSENTIALLY OF CELLULOSE FILAMENTS WITH A SWELLING AGENT FOR CELLULOSE, EQUIVALENT TO AN AQUEOUS SOLUTION CONTAINING BETWEEN ABOUT 5% AND ABOUT 40% NAOH, AT SUBSTANTIALLY ZERO TENSION, TO FORM A COILED YARN, TWISTING SAID YARN IN A DIRECTION OPPOSITE TO ITS PLY BEYOND THE POINT OF NO TWIST IN THE ORIGINAL PLIED YARN, PULLING OUT THE COILED, REVERSE TWISTED YARN TO FORM A SUBSTANTIALLY STRAIGHT YARN, CONVERTING THE STRAIGHT YARN TO FABRIC AND RELAXING THE FABRIC IN AN AQUEOUS FLUID.
Claim 4
Independent Claim
94 words
A METHOD FOR MAKING A STRETCH FABRIC WHICH COMPRISES TREATING A MULTI-PLY YARN CONSITNG ESSENTIALLY OF CELLULOSE FILAMENTS WITH A SWELLING AGENT FOR CELLULOSE, EQUIVALENT TO AN AQUEOUS SOLUTION CONTAINING BETWEEN ABOUT 5% AND ABOUT 40% NAOH, AT SUBSTANTIALLY ZERO TENSION, TO FORM A COILED YARN, TWISTING SAID YARN IN A DIRECTION OPPOSITE TO ITS PLY BEYOND THE POINT OF NO TWIST IN THE ORIGINAL PLIED YARN, PULLING OUT THE COILED, REVERSE TWISTED YARN TO FORM A SUBSTANTIALLY STRAIGHT YARN, CONVERTING THE STRAIGHT YARN TO FABRIC AND RELAXING THE FABRIC IN AN AQUEOUS FLUID.
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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |