Variable denier yarn
Abstract
Abstract TEXTILE ARTICLES COMPRISE YARNS OF A SYNTHETIC THERMOPLASTIC MATERIAL, EXPECIALLY POLYETHYLENE TEREPHTHALATE, IN WHICH THE INDIVIDUAL FILAMENTS COMPRISE ZONES OF AT LEAST THREE DIFFERENT THICKNESS, THE THICKEST HAVING THE LOWEST CRYSTALLINITY AND ORIENTATION AND VICE VERSA; THE FILAMENTS ALSO HAVE A NONSPIRAL THREE-DIMENSIONAL CRIMP, AND THEY, AND THE YARNS COMPRISING THEM HAVE HIGH APPARENT VOLUME. THE YARN IS MADE BY ONLY PARTIALLY STRETCHING THE INITIAL YARN IN AT LEAST TWO STAGES, DURING AT LEAST ONE OF WHICH THE YARN IS IN CONTACT WITH A CRACK OR FILLURE PROMOTING AGENT, AND SUBSQUENTLY GIVING THE YARN, BEFORE OR AFTER IT IS MADE UP, A HEAT TREATMENT WHILE IT IS IN A RELAXED STATE.
Inventors
- 👤 Michel Buzano
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |