US5134031A
Expired / Lapsed
US
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Highly moisture-absorptive fiber
Assignee: Descente Ltd
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Filing: 1990-07-13
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Granted: 1992-07-28
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Expires: 2010-07-13
Abstract
Abstract A highly moisture-absorptive fiber obtained by mixing and kneading one or more kinds of animal protein fibers, general protein forming the animal skin, bones, and others, pulverized to very fine powder of the 0.05 to 15 μm size with a polymer of synthetic fiber, semi-synthetic fiber or regenerated fiber or polymer of chemical fiber material consisting of a mixture of more than two kinds of these polymers and spinning the kneaded composition, which can give a fine fiber having flexibility and proper elongation.
Inventors
- 👤 Shunsaku Kagechi
- 👤 Nobuo Kusamoto
- 👤 Yasuji Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:58
CPC Classifications
D; D01; D01F; D01F8/00; D01F1/00; D01F1/02; D01F1/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2935; Y10T428/2973; Y10T428/2975; Y10T428/2978
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
70 words
A highly moisture-absorptive fiber obtained by spinning a mixture comprising one or more kinds of animal protein fibers pulverized to fine powder of 0.05 to 15 μm size, said fine powder having a moisture content of less than 300 ppm, and at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material.
Claim 2
Dependent Claim
70 words
A highly moisture-absorptive fiber obtained by spinning a mixture comprising one or more kinds of animal protein fibers pulverized to fine powder of 0.05 to 15 μm size, said fine powder having a moisture content of less than 300 ppm, and at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material.
Claim 3
Dependent Claim
95 words
A highly moisture-absorptive fiber comprising a core fiber and a sheath fiber formed on said core fiber, said sheath fiber obtained by spinning a mixture comprising one or more kinds of animal fibers pulverized to fine powder of 0.05 to 15 μm size, said fine powder having a moisture content of less than 300 ppm, and at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material so as to coat a surface of said core fiber.
Claim 4
Dependent Claim
95 words
A highly moisture-absorptive fiber comprising a core fiber and a sheath fiber formed on said core fiber, said sheath fiber obtained by spinning a mixture comprising one or more kinds of animal fibers pulverized to fine powder of 0.05 to 15 μm size, said fine powder having a moisture content of less than 300 ppm, and at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material so as to coat a surface of said core fiber.
Claim 5
Dependent Claim
126 words
A highly moisture-absorptive fiber comprising a core fiber and a sheath fiber formed on said core fiber, said core fiber obtained by spinning a mixture comprising one or more kinds of animal protein fibers pulverized to fine powder of 0.05 to 15 μm size, said fine powder having a moisture content of less than 300 ppm, and at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material, and said sheath fiber formed on said core fiber by spinning at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material.
Claim 6
Dependent Claim
126 words
A highly moisture-absorptive fiber comprising a core fiber and a sheath fiber formed on said core fiber, said core fiber obtained by spinning a mixture comprising one or more kinds of animal protein fibers pulverized to fine powder of 0.05 to 15 μm size, said fine powder having a moisture content of less than 300 ppm, and at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material, and said sheath fiber formed on said core fiber by spinning at least one polymer selected from the group consisting of a polymer of synthetic fiber material, a polymer of semi-synthetic fiber material and a polymer of regenerated fiber material.
Claim 7
Dependent Claim
39 words
The highly moisture-absorptive fiber as in claim 1, 2 or 3 in which a number of pores or slits are formed in a surface of the fiber, or in an inner part and on a surface of the fiber.
Claim 8
Dependent Claim
35 words
The highly moisture-absorptive fiber as in claim 4, in which the pores are formed by rinsing out a water soluble substance selected from an inorganic compound and a saccharide, added to said mixture during spinning.
Claim 9
Dependent Claim
29 words
The highly moisture-absorptive fiber as in claim 4, in which the slits are formed by contraction of the polymer constituting the sheath fiber during a curing of said polymer.
Claim 10
Dependent Claim
32 words
The highly moisture-absorptive fiber as in claim 4, in which the pores or the slits are formed mechanically by means of a cutter or needle acting on the fiber during the spinning.
Claim 11
Dependent Claim
56 words
The highly moisture-absorptive fiber as in claim 1, 2 or 3, in which the pores are formed in the inner part of the fiber by rinsing out a water soluble substance injected in a direction of the fiber during the spinning process so as to form a hollow structure in the inner part of the fiber.
Claim 12
Dependent Claim
53 words
The highly moisture-absorptive fiber as in claim 1, 2 or 3, in which the pores are formed on the surface of the fiber by rinsing out a water soluble substance injected in a direction of the fiber during the spinning process so as to be partly exposed on the surface of the fiber.
Claim 13
Dependent Claim
25 words
The highly moisture-absorptive fiber as in claim 1, 2 or 3, in which said fiber is dyed with acid dye to form a mottled pattern.
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) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |