US4170565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substrate article for cleaning fabrics
Assignee: Procter and Gamble Co
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Filing: 1977-03-25
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Granted: 1979-10-09
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Expires: 1997-03-25
Abstract
Abstract An article useful in a process for cleaning fabrics utilizing a water-insoluble substrate, having specifically defined air permeability and surface area characteristics, is disclosed. This article is added to the automatic washer at the beginning of its laundering cycle and provides excellent cleaning for fabrics washed therein. A method for cleaning fabrics, using these articles, is also disclosed.
Inventors
- 👤 Daniel J. Flesher
- 👤 Gary W. Kingry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:49
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D17/046; D; D06; D06F; D06F39/00; D06F39/02; D06F39/024; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249954; Y10T442/00; Y10T442/20; Y10T442/2352; Y10T442/2418; Y10T442/2459
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
An article useful in a process for cleaning fabrics, yielding sequential release of surfaceactive components, consisting essentially of an effective amount of a surface-active composition comprising from about 5 to 95% of a water-soluble surface-active agent contained between two layers of a water-insoluble, wet-strength substrate, at least one of said layers having areas of different air permeability, at least a substantial portion of said layers having an air permeability of at least about 30 cubic ft. per minute per sq. ft., and a portion of said layers having an air permeability of less than about 10 cubic ft. per minute per sq. ft.
Claim 2
Dependent Claim
103 words
An article useful in a process for cleaning fabrics, yielding sequential release of surfaceactive components, consisting essentially of an effective amount of a surface-active composition comprising from about 5 to 95% of a water-soluble surface-active agent contained between two layers of a water-insoluble, wet-strength substrate, at least one of said layers having areas of different air permeability, at least a substantial portion of said layers having an air permeability of at least about 30 cubic ft. per minute per sq. ft., and a portion of said layers having an air permeability of less than about 10 cubic ft. per minute per sq. ft.
Claim 3
Dependent Claim
31 words
An article according to claim 1 wherein at least a substantial portion of the substrate has an air permeability of at least about 70 cubic ft. per minute per sq. ft.
Claim 4
Dependent Claim
17 words
An article according to claim 1 wherein the article additionally contains fabric softening and static control components.
Claim 5
Dependent Claim
38 words
An article according to claim 3 wherein the fabric softening and static control components are contained in the portion of said layers of lower air permeability and are not released into the laundry solution until the rinse cycle.
References Cited (Backward Citations)
FR555575A
Cited
US1993174A
Cited
US3121249A
Cited
US3955920A
Cited
US3816321A
Cited
JPS502940A
Cited
US4066394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |