US4218220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fading blue jeans
Assignee: Diversey Wyandotte Corp
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Filing: 1978-12-04
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Granted: 1980-08-19
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Expires: 1998-12-04
Abstract
Abstract Evenly pre-faded blue jeans are obtained by subjecting the blue jeans to a washing cycle comprising (a) an initial wash with detergent and emulsifier, (b) a suitable intermediate rinsing operation, (c) a bleaching operation in which the garments are subjected to the simultaneous action of bleach and a fabric softener of the quaternary ammonium type, alone or with the addition of a suitable amount of detergent, (d) a further rinsing operation, and (e) an optional final treatment with fabric softener and laundry sour.
Inventors
- 👤 Frank R. Kappler
- 👤 John J. Cramer
- 👤 Sarwan K. Kakar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:26
CPC Classifications
D; D06; D06F; D06F35/00; D06F35/005; D06F35/006; D06B; D06B11/00; D06B11/0093; D06B11/0096; D06L; D06L4/00; D06L4/20; D06L4/21; D06L4/22; D06L4/23; D06L4/27; D06P; D06P5/00; D06P5/15; D06P5/151; D06P5/158
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
50 words
Method of producing evenly prefaded, new garments of blue denim, said method comprising the steps of initially washing said garments with detergent and emulsifier, bleaching the garments by subjecting them to the simultaneous action of bleach and a fabric softener of the quaternary ammonium type, and further rinsing said garments.
Claim 2
Dependent Claim
50 words
Method of producing evenly prefaded, new garments of blue denim, said method comprising the steps of initially washing said garments with detergent and emulsifier, bleaching the garments by subjecting them to the simultaneous action of bleach and a fabric softener of the quaternary ammonium type, and further rinsing said garments.
Claim 3
Dependent Claim
31 words
A method as defined in claim 1, wherein said bleach is a blend of trichloroisocyanuric acid and sodium sulfate, said acid being present in a proportion effective to give bleaching action.
Claim 4
Dependent Claim
15 words
A method as defined in claim 2, wherein said fabric softener is hexadecyldimethylbenzyl ammonium chloride.
Claim 5
Dependent Claim
14 words
A method as defined in claim 1, wherein said bleach is liquid sodium hypochlorite.
Claim 6
Dependent Claim
15 words
A method as defined in claim 4, wherein said fabric softener is hexadecyldimethylbenzyl ammonium chloride.
Claim 7
Dependent Claim
15 words
A method as defined in claim 1, wherein said fabric softener is hexadecyldimethylbenzyl ammonium chloride.
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) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |