Patent US3956174A successfully refreshed from Google Patents.
US3956174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber and polymer preservative
Assignee: Very Important Products Inc
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Filing: 1974-01-21
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Granted: 1976-05-11
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Expires: 1994-01-21
Abstract
Abstract A process for protecting, preserving, and renewing surfaces, especially rubber and other natural and synthetic polymers, leather, wood, painted surfaces and metal. An aqueous emulsion of an unsubstituted or substituted dimethylpolysiloxane fluid, or mixtures thereof, is used to thoroughly wet the surface to be protected. After a period of penetration, preferably about twenty four hours, the surface is rewetted and allowed to penetrate as in the first application. At least one additional application and penetration gives optimum protection.
Inventors
- 👤 Joseph John Palcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:25
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/06; C08J; C08J7/00; C08J7/04; C08J7/06; C08K; C08K9/00; C08K9/04; C08K9/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A preservative composition consisting essentially of: an emulsion of at least one water emulsifiable organopolysiloxane fluid having a viscosity in the range of from about 100 to about 10,000 centistokes and, based on the weight of the polysiloxane fluid from about 65% to about 5,000% by weight of water; and from about 15% to about 65% by weight based on the weight of the polysiloxane fluid of at least one water miscible polyol compound.
Claim 2
Dependent Claim
74 words
A preservative composition consisting essentially of: an emulsion of at least one water emulsifiable organopolysiloxane fluid having a viscosity in the range of from about 100 to about 10,000 centistokes and, based on the weight of the polysiloxane fluid from about 65% to about 5,000% by weight of water; and from about 15% to about 65% by weight based on the weight of the polysiloxane fluid of at least one water miscible polyol compound.
Claim 3
Dependent Claim
32 words
A preservative as claimed in claim 1 wherein: said water is present in an amount of from about 65% to about 660% by weight, based on the weight of the polysiloxane fluid.
Claim 4
Dependent Claim
43 words
A preservative as claimed in claim 2 wherein: said polyol compound comprises, based on the weight of the polysiloxane fluid of: from about 0.5% to about 10% by weight of diethylene glycol and from about 60% to about 10% by weight of glycerin.
Claim 5
Dependent Claim
23 words
A preservative as claimed in claim 3 wherein: the organopolysiloxane fluid is a dimethylpolysiloxane fluid having a viscosity less than about 10,000 centistokes.
Claim 6
Dependent Claim
12 words
A preservative as claimed in claim 1 wherein: said polyol is glycerin.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |