Patent US3981741A successfully refreshed from Google Patents.
US3981741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous cleaning materials impregnated with a latex-mixture
Assignee: Individual
•
Filing: 1975-03-03
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Granted: 1976-09-21
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Expires: 1995-03-03
Abstract
Abstract A method for cleaning a soiled surface comprising rubbing the surface in the presence of water with a fibrous cleaning material characterized in that a fibrous carrier is impregnated with a rubber latex of at least one member selected from the group consisting of natural rubber, butadiene rubber and styrene-butadiene rubber and a high molecular weight substance selected from the group consisting of polyvinyl acetate, vinyl acetate-ethylene copolymer, acrylonitrile-butadiene copolymer, polychloroprene and acrylic resin and thereafter drying.
Inventors
- 👤 Hirokazu Iino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:33
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/17; B; B08; B08B; B08B1/00; B08B1/10; B08B1/14; B08B1/143; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A method of cleaning a soiled surface comprising rubbing in the presence of water the surface to be cleaned with a fibrous cleaning material consisting essentially of a fibrous carrier which is impregnated with a mixture of (1) a latex of at least one rubber selected from the group consisting of natural rubber, butadiene rubber and styrene-butadiene rubber and (2) a polar high molecular weight substance selected from the group consisting of polyvinyl acetate, vinyl acetate-ethylene copolymer, acrylonitrile-butadiene copolymer, polychloroprene and acrylic resin and thereafter drying.
Claim 2
Independent Claim
86 words
A method of cleaning a soiled surface comprising rubbing in the presence of water the surface to be cleaned with a fibrous cleaning material consisting essentially of a fibrous carrier which is impregnated with a mixture of (1) a latex of at least one rubber selected from the group consisting of natural rubber, butadiene rubber and styrene-butadiene rubber and (2) a polar high molecular weight substance selected from the group consisting of polyvinyl acetate, vinyl acetate-ethylene copolymer, acrylonitrile-butadiene copolymer, polychloroprene and acrylic resin and thereafter drying.
Claim 3
Dependent Claim
24 words
The method of cleaning a soiled surface according to claim 1, in which said rubber latex is natural rubber latex or styrene-butadiene rubber latex.
Claim 4
Dependent Claim
36 words
The method of cleaning soiled surface according to claim 1, in which said polar high molecular weight substance is at least one of polyvinyl acetate and vinylacetate-ethylene copolymer containing at least 80 wt.% of vinyl acetate.
Claim 5
Dependent Claim
38 words
The method of cleaning a soiled surface according to claim 1, in which said polyvinyl acetate has an average polymerization degree of 400 to 5,000 and said vinylacetate-ethylene copolymer has an average polymerization degree of 400 to 5,000.
Claim 6
Dependent Claim
40 words
The method of cleaning a soiled surface according to claim 1, in which the amount of the rubber contained in the fibrous carrier is in the range of 10 to 150 wt.%, based on the weight of the fibrous carrier.
Claim 7
Dependent Claim
34 words
The method of cleaning soiled surface according to claim 5, in which said amount of the rubber is in the range of 15 to 100 wt.%, based on the weight of the fibrous carrier.
Claim 8
Dependent Claim
41 words
The method of cleaning a soiled surface according to claim 1, in which the amount of said polar high molecular weight substance is up to 70 wt.%, based on the total weight of rubber and the polar high molecular weight substance.
Claim 9
Dependent Claim
44 words
The method of cleaning a soiled surface according to claim 7, in which said amount of polar high molecular weight substance is in the range of 30 to 60 wt.%, based on the total weight of rubber and the polar high molecular weight substance.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |