Patent US3660993A successfully refreshed from Google Patents.
US3660993A
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US
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Two-component composite filament and method of producing same
Assignee: SNIA Viscosa SpA
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Filing: 1971-03-08
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Granted: 1972-05-09
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Expires: 1991-03-08
Abstract
Abstract A two-component composite filament having an unbiased dyeability and a suppressed crimpability wherein three distinctly sectioned portions including respectively a part of the periphery of the unitary filament are disposed in a side-by-side relation and extends uniformly throughout the entire length of the filament, two portions among said three portions are separated by an adherent intervened portion therebetween, said separated two portions are composed of one thermoplastic synthetic linear polymer and said intervened portion is composed of another thermoplastic synthetic linear polymer which has different heat shrinkability from that of the former polymer.
Inventors
- 👤 Masao Matsui
- 👤 Susumu Tokura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:37
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/32; D01F; D01F8/00; D01F8/04; D01F8/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
The unitary composite filament of claim 1, wherein the total length of the periphery in the cross-section occupied by the second component comprises about 50 percent of the total peripheral length of the filament.
Claim 2
Dependent Claim
18 words
The unitary composite filament of claim 1, wherein theta is between pi /3 radian and 8/9 pi radian.
Claim 3
Dependent Claim
18 words
The unitary composite filament of claim 1, wherein theta is between 4/9 pi radian and 7/9 pi radian.
Claim 4
Dependent Claim
20 words
The unitary composite filament of claim 1, wherein the cross-sectional area of each of said distinct portions is substantially equal.
Claim 5
Dependent Claim
31 words
The unitary composite filament of claim, wherein said thermoplastic synthetic linear polymer is a polyamide, polyester, polyetherester, polyolefin, polycarbonate, polyoxymethylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, or a copolymer or mixture thereof.
Claim 6
Dependent Claim
69 words
The unitary composite filament of claim 1, wherein said thermoplastic synthetic linear polymer is a polyamide selected from the group consisting of nylon-6, nylon-7, nylon-9, nylon-11, nylon-12, nylon-66, nylon-610, polymetaxylylene adipamide, polyparaxylylene adipamide and copolyamides derived from at least two polyamide-forming substances selected from the group consisting of epsilon -caprolactam, nylon-66 salt, nylon-610 salt, nylon-12 salt, metaxylylene diammonium adipate, paraxylylene diammonium adipate, hexamethylene diammonium terephthalate and hexamethylene diammonium isophthalate.
Claim 7
Dependent Claim
11 words
A fibrous article comprising said unitary composite filament of claim 1.
Claim 8
Dependent Claim
35 words
A fibrous article comprising two filaments which are a. a first filament corresponding to said unitary composite filament of claim 1; and b. a second filament which is a conventional side-by-side two component composite filament.
Claim 9
Dependent Claim
41 words
A hosiery of improved appearance and shape for women''s wear which comprises a. welt, heel and toe portions knit with said unitary composite filament of claim 1; and b. a leg portion knit with a conventional side-by-side type two-component composite filament.
Claim 10
Dependent Claim
13 words
A knit fabric consisting essentially of said unitary composite filament of claim 1.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |