US3576773A
Expired / Lapsed
US
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Polyester based fibers comprising a non-linear branched ethylene terephthalate polymers
Assignee: Rhodiaceta SA
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Filing: 1969-06-03
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Granted: 1971-04-27
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Expires: 1989-06-03
Abstract
Abstract THIS INVENTION PROVIDES NOVEL POLYESTER FIBERS WHICH WHEN FORMED INTO A FABRIC DO NOT GIVE RISE TO PILLING OR FIBRILATION, MADE BY MELT-SPINNING BRANCHED CHAIN POLY- ETHYLENE TEREPHTHALATE OF SPECIFIED VISCOSITY CHARACTERISTICS, AND HAVING SPECIFIED TENSILE STRENGTH.
Inventors
- 👤 Yves Vaginay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:43
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/62; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; D01F6/78; D01F6/84; C08G63/78; C08G63/82; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 0
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |