US3992146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of using biocidal solutions containing copper sulfate
Assignee: Individual
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Filing: 1974-07-30
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Granted: 1976-11-16
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Expires: 1994-07-30
Abstract
Abstract Growth of fungus such as mold and mildew fungi is inhibited by applying to the surface to be protected an aqueous solution of a copper compound, such as copper sulfate, and a surfactant. The aqueous solution of copper compound and surfactant is especially effective for inhibiting the growth of microorganisms on hard porous surfaces such as grout seams associated with bathroom components such as bath tubs and ceramic tile shower stalls which are exposed to high humidity conditions for extended periods. In one embodiment, growth of microorganisms is inhibited by applying the aqueous solution of copper compound and surfactant to hard porous surfaces in need of treatment. In another embodiment of the invention, an aqueous solution of copper compound and surfactant is used as the liquid source for forming the uncured mortar used to install or replace tiles.
Inventors
- 👤 Frank A. Fazzalari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:37
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/48
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A process for inhibiting the growth of microorganisms on porous surfaces containing free alkaline hydroxide, said porous surface being a member selected from the group consisting of grout, caulk, plaster and cement, which comprises applying to said porous surface an aqueous germicidal solution containing from about 100 to about 100,000 parts per million of copper sulfate and from about 0.05 to about 6% by weight of a water soluble anionic nitrogen-containing surfactant, whereby a water insoluble tribasic cupric sulfate complex forms on said porous surface.
Claim 2
Dependent Claim
85 words
A process for inhibiting the growth of microorganisms on porous surfaces containing free alkaline hydroxide, said porous surface being a member selected from the group consisting of grout, caulk, plaster and cement, which comprises applying to said porous surface an aqueous germicidal solution containing from about 100 to about 100,000 parts per million of copper sulfate and from about 0.05 to about 6% by weight of a water soluble anionic nitrogen-containing surfactant, whereby a water insoluble tribasic cupric sulfate complex forms on said porous surface.
Claim 3
Dependent Claim
36 words
The process of claim 1 wherein said aqueous solution contains from about 100 to about 10,000 parts per million by weight of copper sulfate and from about 0.08 to about 5% by weight of said surfactant.
Claim 4
Dependent Claim
256 words
The process of claim 2 wherein said surfactant is a member selected from the group consisting of: a. a liquid detergent consisting essentially of 1. from about 20% to about 40% by weight of the composition of a sulfate detergent surfactant having the following formula R--(C.sub.2 H.sub.4 O).sub.x --SO.sub.4 --Me wherein R is a straight chain alkyl group having from 10 to about 14 carbon atoms with at least 50% of said alkyl groups having 12 carbon atoms, x is a number from zero to about four, and Me is a member selected from the group consisting of monoethanolamine, diethanolamine, ammonium, sodium and potassium cations, 2. from about 5% to about 20% by weight of the composition of a trialkyl amine oxide having one straight chain alkyl group having from about 10 to about 14 carbon atoms and two short chain alkyl groups having 12 carbon atoms in an amount such that the weight ratio of sulfate detergent surfactant to amine oxide is from about 1/1 to about 7/1, 3. from about 2% to about 10% by weight of the composition of an alkyl glyceryl ether sulfonate having a straight chain alkyl group having from about 10 to about 14 carbon atoms with at least 50% of said alkyl group having 12 carbon atoms, the cation of said sulfonate being a member selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, ammonium, sodium, and potassium cations and mixtures thereof, the amount of said sulfonate being at least 20% of the amount of said amine oxide, 4.
Claim 5
Dependent Claim
44 words
at least about 5% by weight of the composition of a solubilizing agent selected from the group consisting of methyl, ethyl, n-propyl, and isopropyl alcohols, 5. and the balance water. b. a fatty acid amide of sodium hydrocarbon sulfonate c. ammonium lauryl sulfate and
Claim 6
Dependent Claim
44 words
at least about 5% by weight of the composition of a solubilizing agent selected from the group consisting of methyl, ethyl, n-propyl, and isopropyl alcohols, 5. and the balance water. b. a fatty acid amide of sodium hydrocarbon sulfonate c. ammonium lauryl sulfate and
Claim 7
Dependent Claim
21 words
d. mixtures thereof. 4. The process of claim 3 wherein said surfactant is a fatty acid amide of sodium methyl taurine.
Claim 8
Dependent Claim
12 words
The process of claim 3 wherein said surfactant is ammonium lauryl sulfate.
Claim 9
Dependent Claim
24 words
The process of claim 3 wherein said surfactant is a mixture of a fatty acid amide of sodium methyl taurine and ammonium lauryl sulfate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-16 | 1980-05-17 | 1980-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-16 | 1984-05-17 | 1984-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-16 | 1988-05-17 | 1988-11-16 | $7700.00 | Window Closed / Lapsed |