Patent US4037054A successfully refreshed from Google Patents.
Patent US3264390A successfully refreshed from Google Patents.
US3264390A
Expired / Lapsed
US
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Process for preparing multifilament yarns
Assignee: EIDP Inc
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Filing: 1963-07-15
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Granted: 1966-08-02
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Tanner David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:41
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/32; D01D5/42; D01D5/423; D01F; D01F1/00; D01F1/02; D01F1/09; D01F8/00; D01F8/04; D01F8/12; D01F8/14; Y; Y10; Y10S; Y10S264/00; Y10S264/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR PREPARING A SPLITTABLE COMPOSITE FILAMENT WHICH COMPRISES (1) EXTRUDING A POLYAMIDE COMPONENT HAVING A RELATIVE VISCOSITY, MEASURED AFTER EXTRUSION, OF ABOUT 30 TO 60 AND A POLYESTER COMPONENT HAVING A RELATIVE VISCOSITY, MEASURED AFTER EXTRUSION, OF ABOUT 22 TO 30, THE RATIO OF THE VISCOSITIES OF SAID POLYAMIDE AND POLYESTER COMPONENTS BEING FROM 1.5 TO 2.5, AND AT LEAST ONE OF SAID COMPONENTS CONTAINING AS A SEPARATE PHASE THEREIN A POLYMERIC ANTISTATIC AGENT, (2) ATTENUATING SAID FILAMENT BY PULLING IT AWAY FROM THE ORIFICE AT A SPEED AT LEAST 40 TIMES THE SPEED AT WHICH IT IS EXTRUDED, AND (3) DRAWING SAID FILAMENT FROM 2 TO 8 TIMES ITS ORIGINAL LENGTH.
Claim 2
Dependent Claim
114 words
A PROCESS FOR PREPARING A SPLITTABLE COMPOSITE FILAMENT WHICH COMPRISES (1) EXTRUDING A POLYAMIDE COMPONENT HAVING A RELATIVE VISCOSITY, MEASURED AFTER EXTRUSION, OF ABOUT 30 TO 60 AND A POLYESTER COMPONENT HAVING A RELATIVE VISCOSITY, MEASURED AFTER EXTRUSION, OF ABOUT 22 TO 30, THE RATIO OF THE VISCOSITIES OF SAID POLYAMIDE AND POLYESTER COMPONENTS BEING FROM 1.5 TO 2.5, AND AT LEAST ONE OF SAID COMPONENTS CONTAINING AS A SEPARATE PHASE THEREIN A POLYMERIC ANTISTATIC AGENT, (2) ATTENUATING SAID FILAMENT BY PULLING IT AWAY FROM THE ORIFICE AT A SPEED AT LEAST 40 TIMES THE SPEED AT WHICH IT IS EXTRUDED, AND (3) DRAWING SAID FILAMENT FROM 2 TO 8 TIMES ITS ORIGINAL LENGTH.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |