Patent US3644969A successfully refreshed from Google Patents.
US3644969A
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Process for producing yarns showing novel varying color effects
Assignee: Rhodiaceta SA
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Filing: 1969-11-25
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Granted: 1972-02-29
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Expires: 1989-11-25
Abstract
Abstract Yarns showing novel color effects varying along their length are made by feeding a thermoplastic yarn into a confined space, so forming a long stack of uniform cross section of folded yarn in the said space, by means of a jet of fluid at a temperature sufficient to set the resulting crimp in the yarn, and feeding a dye solution, preferably two or more dye solutions at different locations to the same cross section of the stack, under conditions such that the resulting intensity of color of the yarn due to each dye falls off across the stack from the point or points of application.
Inventors
- 👤 Rene Guillermin
- 👤 Jean Joly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:57
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/20; D06P5/2066; D02; D02G; D02G1/00; D02G1/12; D02G1/122; D06B; D06B11/00; D06B11/002; D06B11/004; D06P1/00; D06P1/0096; D06P3/00; D06P3/82; D06P3/854; D06P7/00; D06P7/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
Process according to claim 1 wherein at least two different dyeing solutions are applied at different locations to the same cross section of the stack, taken normal to the axis of the stack.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |