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US3620003A Expired / Lapsed US ⏱️ 0.0 years remaining

Novelty yarn and method of forming same

Assignee: Celanese Canada Inc
•
Filing: 1970-02-11
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Granted: 1971-11-16
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Expires: 1990-02-11
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Abstract

Abstract A NOVELTY SINGLES YARN COMPRISING FIBRILLATED POLYMERIC STAPLE FIBRES AND NON-FIBRILLATED STAPLE FIBRES, CHARACTERIZED IN THAT MOST OF THE FIBRILLATED POLYMERIC STAPLE FIBRES STAY ON THE PERIPHERY OF THE YARN TO FORM A SHELL SURROUNDING THE NON-FIBRILLATED STAPLE FIBRES. A NOVELTY CARPET IS MADE FROM SAID YARN. THE PROCESS OF MAKING A NOVELTY YARN MADE UP OF FIBRILLATED POLYMERIC STAPLE FIBRES AND NON-FIBRILLATED STAPLE FIBRES, COMPRISING: (A) BLENDING STAPLES OF AT LEAST ONE FIBRILLATED POLYMERIC STAPLE FIBRE WITH STAPLES OF AT LEAST ONE NON-FIBRILLATED SYNTHETIC, OR NATURAL FIBRE, (B) CARDING THE SAID BLEND INTO A SILVER, (C) DRAFTING AND SPINNING THE SILVER TO FORM A YARN HAVING FIBRILLATED POLYMERIC STAPLE FIBRES MOSTLY EMERGING OUT ON THE PERIPHERY OF THE SAID YARN AS A SHELL SURROUNDING THE OTHER FILAMENTS OR FIBRES WHICH FORM A CORE.

Inventors

  • 👤 Sohinger Nath Chopra

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 00:07
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/445; D02G3/22; D02G3/38; Y; Y10; Y10S; Y10S57/00; Y10S57/907

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) 1974-11-15 1975-05-17 1975-11-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-15 1979-05-17 1979-11-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-15 1983-05-17 1983-11-16 $7700.00 Window Closed / Lapsed

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