US3671619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimp reservation process
Assignee: Monsanto Co
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Filing: 1967-03-08
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Granted: 1972-06-20
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Expires: 1987-03-08
Abstract
Abstract There is disclosed a process for reserving and redeveloping crimp involving removing the crimp from self-crimped composite fibers, which originally developed their crimp under rather severe temperature or humidity conditions or both, then processing the decrimped fiber to the desired end product and finally redeveloping the original crimp by mild processing conditions.
Inventors
- 👤 Warren E Fitzgerald
- 👤 John P Knudan
- 👤 Jessie O Brock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:30
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/08; D02; D02G; D02G1/00; D02G1/20; D02G1/205; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2929
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
The process of claim 1 wherein the composite fiber is a bicomponent fiber consisting of a synthetic polymeric component consisting of a copolymer of from 85 to 95 percent acrylonitrile and 5 to 15 percent vinyl acetate and a second polymeric component consisting of a copolymer of 85 to 95 percent acrylonitrile and 5 to 15 percent vinyl acetate with a difference of from 0.5 to 5 percent vinyl acetate in the two components.
Claim 2
Dependent Claim
62 words
The process of claim 1 wherein the composite fiber is a bicomponent fiber consisting of a synthetic polymeric component consisting of a copolymer of 85 to 95 percent acrylonitrile and 5 to 15 percent vinyl acetate and a second component consisting of at least 80 percent arylonitrile, up to 15 percent vinyl acetate and from 1 to 10 percent of an acrylate.
Claim 3
Dependent Claim
36 words
The process of claim 1 wherein the composite fiber is a bicomponent fiber consisting of a synthetic polymeric component consisting of a copolymer of 85 to 95 percent acrylonitrile and 5 to 15 percent vinyl acetate.
Claim 4
Dependent Claim
66 words
The process of claim 1 wherein the composite fiber is a bicomponent fiber consisting of a synthetic polymeric compoNent consisting of a terpolymer of 78 to 94 percent acrylonitrile, 5 to 15 percent vinyl acetate and 1 to 7 percent vinyl bromide and a second component consisting of at least 80 percent acrylonitrile, up to 15 percent vinyl acetate and 1 to 7 percent vinyl bromide.
Claim 5
Dependent Claim
83 words
The process of claim 1 wherein the composite fiber is a bicomponent fiber consisting of a synthetic polymeric component consisting of a copolymer of from 85 to 95 percent acrylonitrile and from 5 to 15 percent vinyl acetate and a second polymeric component consisting of a terpolymer of 80 to 95 percent acrylonitrile, 5 to 15 percent vinyl acetate and 0.1 to 5 percent of a copolymerizable sulfonate with a difference of from 0.5 to 5 percent vinyl acetate in the two components.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein the stretching is done in an atmosphere of boiling water.
Claim 7
Dependent Claim
14 words
The process of claim 1 wherein the stretching is from 15 to 350 percent.
References Cited (Backward Citations)
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US3242243A
Cited
US3330895A
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |