US3220085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile process for forming stretching yarn
Assignee: Akzo Nobel UK PLC
•
Filing: 1964-02-14
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Granted: 1965-11-30
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Expires: 1984-02-14
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey V Lund
- 👤 Robert D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:31
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S8/00; Y10S8/04; Y10S8/09; Y10S8/10; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR FORMING A STRETCHY YARN WHICH COMPRISES BLENDING CELLULOSIC FILAMENTARY MATERIAL WITH THERMOPLASTIC FILAMENTARY MATERIAL TO FORM A YARN, HEATING SAID YARN TO SHRINKM SAID THERMOPLASTIC FILAMENTARY MATERIAL AND TO CAUSE THE INDIVIDUAL CELLULOSIC FILAMENTS TO BE FOLDED BACK UPON THEMSELVES, IMPREGNATING THE SHRUNKEN YARN WITH A CROSS-LINKING AGENT FOR THE CELLULOSE WHICH IS SUBSTANTIALLY INERT TO SAID THERMOPLASTIC MATERIAL AND HEATING THE IMPREGNATED YARN IN THE SUBSTANTIAL ABSENCE OF TENSION TO EFFECT CROSS-LINKING OF THE CELLULOSIC FILAMENTS IN SAID FOLDED POSITION.
Claim 2
Independent Claim
84 words
A METHOD FOR FORMING A STRETCHY YARN WHICH COMPRISES BLENDING CELLULOSIC FILAMENTARY MATERIAL WITH THERMOPLASTIC FILAMENTARY MATERIAL TO FORM A YARN, HEATING SAID YARN TO SHRINKM SAID THERMOPLASTIC FILAMENTARY MATERIAL AND TO CAUSE THE INDIVIDUAL CELLULOSIC FILAMENTS TO BE FOLDED BACK UPON THEMSELVES, IMPREGNATING THE SHRUNKEN YARN WITH A CROSS-LINKING AGENT FOR THE CELLULOSE WHICH IS SUBSTANTIALLY INERT TO SAID THERMOPLASTIC MATERIAL AND HEATING THE IMPREGNATED YARN IN THE SUBSTANTIAL ABSENCE OF TENSION TO EFFECT CROSS-LINKING OF THE CELLULOSIC FILAMENTS IN SAID FOLDED POSITION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |