Patent US4496619A successfully refreshed from Google Patents.
US4496619A
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Fabric composed of bundles of superfine filaments
Assignee: Toray Industries Inc
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Filing: 1982-11-16
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Granted: 1985-01-29
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Expires: 2002-11-16
Abstract
Abstract A fabric comprising an aggregation of a plurality of bundles of superfine filaments, each such bundle being obtained by separating multi-component composite filaments is provided. Each such bundle has at least two different kinds of superfine filaments, one such kind of superfine filament being dispersed without maldistribution in the bundle. The respective kinds of superfine filaments have a difference in coefficient of free contraction of at least 5%, or one kind of superfine filament is a single component filament and the other kind of superfine filament is a bicomponent type filament. Also provided is a method of making a bundle of puffy superfine filaments.
Inventors
- 👤 Miyoshi Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:07
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/36; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2929; Y10T428/2931; Y10T428/2973; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/609; Y10T442/612; Y10T442/613; Y10T442/637; Y10T442/64
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A fabric comprising an aggregation of a plurality of bundles of superfine filaments, each such bundle being obtained by separating multi-component composite filaments, each such bundle comprising at least two different kinds of superfine filaments, each such kind of superfine filament being a single component filament dispersed independently without maldistribution in said bundle, said bundle being further characterized by having a difference in coefficient of free contraction between the respective kinds of superfine filaments of at least 5%.
Claim 2
Dependent Claim
78 words
A fabric comprising an aggregation of a plurality of bundles of superfine filaments, each such bundle being obtained by separating multi-component composite filaments, each such bundle comprising at least two different kinds of superfine filaments, each such kind of superfine filament being a single component filament dispersed independently without maldistribution in said bundle, said bundle being further characterized by having a difference in coefficient of free contraction between the respective kinds of superfine filaments of at least 5%.
Claim 3
Dependent Claim
18 words
A fabric according to claim 1, wherein the denier of said superfine filaments is between about 0.05-0.6 d.
Claim 4
Dependent Claim
18 words
A fabric according to claim 1, wherein the denier of said superfine filaments is between about 0.6-2.0 d.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |