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US3700545A Expired / Lapsed US ⏱️ 0.0 years remaining

Novel synthetic multi-segmented fibers

Assignee: Kanegafuchi Spinning Co Ltd
•
Filing: 1969-11-12
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Granted: 1972-10-24
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Expires: 1989-11-12
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Abstract

Abstract MENTS HAVING AN AVERAGE SPACE THEREBETWEEN OF AT LEAST 0.1U AT LEAST ON THE PERIPHERY OF THE UNITARY MULTI-SEGMENTED FIBER CAN BE PRODUCED. WHEN A PART OF POLYAMIDE OR POLYESTER IS REMOVED FROM THE MULTI-LAYER STRUCTURE, A FIBER HAVING A SILK-LIKE DEEP GLOSS AND HIGHLY IMPROVED WATER ABSORBING PROPERTY AND TOUCH CAN BE OBTAINED. A NOVEL SYNTHETIC MULTI-SEGMENTED FIBER HAVING A TOUCH SIMILAR TO NATURAL FIBER, AN EXCELLENT WATER ABSORBING PROPERTY AND AN IMPROVED GLOSS, WHICH COMPRISES AT LEAST 10 FINE SEGMENTS WHICH ARE COMPOSED OF AT LEAST ONE COMPONENT OF FIBER-FORMING LINEAR POLYAMIDE AND POLYESTER, EXTEND SUBSTANTIALLY CONTINUOUSLY ALONG THE LONGITUDINAL DIRECTION OF THE FIBER AND OCCUPY AT LEAST A PART OF THE PERIPHERY OF THE UNITARY MULTI-SEGMENTED FIBER, SAID FINE SEGMENTS HAVING THEIR CROSS-SECTIONAL SHAPES AND AREAS IRREGULAR AND UNEVEN TO EACH OTHERS, AND ADJACENT SEG-

Inventors

  • 👤 Masao Matsui
  • 👤 Susumu Tokura
  • 👤 Masahiro Yamabe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:02
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/02; D01D5/00; D01D5/28; D01D5/30; D01F; D01F8/00; D01F8/04; D01F8/14; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2935; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2973

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) 1975-10-24 1976-04-24 1976-10-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-24 1980-04-24 1980-10-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-24 1984-04-24 1984-10-24 $7700.00 Window Closed / Lapsed

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