US4475941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biocide composition comprising sulfonium compounds and organic tin compounds
Assignee: Societe National Elf Aquitaine
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Filing: 1982-04-22
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Granted: 1984-10-09
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Expires: 2002-04-22
Abstract
Abstract Process for the destruction or/and inhibition of the growth of microorganisms by means of organic derivatives of tin to which is added a sulfonium function bearing compound, with or without a solvent, to obtain a synergistic effect. Application of the process for the treatment of an aqueous medium, natural or industrial, refrigeration circuit, underground water reinjection circuit, especially for assisted recovery in the petroleum industry.
Inventors
- 👤 Daniel Ayglon
- 👤 Marie C. Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:28
CPC Classifications
A; A01; A01N; A01N55/00; A01N55/02; A01N55/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
74 words
A process of controlling the growth of the bacteria Enterobacteriaceae, Pseudomonaceae, Bacteriaceae, Clostridiales, Bacillales, or Sporovibrinoales, and the algae Diatomees, Cyanophycees or Chlorophycees, in aqueous medium which comprises introducing into the medium a biocidal effective amount of a synergistic mixture of 20 to 43 weight percent organic tin compound selected from the group consisting of tributyl tin oxide and tributyl tin benzoate and 80 to 57 percent by weight of tetradecyl dimethyl sulfonium methosulfate.
Claim 2
Dependent Claim
74 words
A process of controlling the growth of the bacteria Enterobacteriaceae, Pseudomonaceae, Bacteriaceae, Clostridiales, Bacillales, or Sporovibrinoales, and the algae Diatomees, Cyanophycees or Chlorophycees, in aqueous medium which comprises introducing into the medium a biocidal effective amount of a synergistic mixture of 20 to 43 weight percent organic tin compound selected from the group consisting of tributyl tin oxide and tributyl tin benzoate and 80 to 57 percent by weight of tetradecyl dimethyl sulfonium methosulfate.
Claim 3
Dependent Claim
15 words
The process according to claim 1 wherein the organic tin compound is tributyl tin oxide.
Claim 4
Dependent Claim
14 words
The process of claim 2 in which said mixture contains 25-35% organic tin compound.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the amount of said mixture introduced is 20 to 70 ppm.
Claim 6
Dependent Claim
17 words
The process according to claim 2 in which said mixture contains 20% of said organic tin compound.
Claim 7
Dependent Claim
14 words
The process of claim 5 wherein the amount of said mixture is 40-70 ppm.
Claim 8
Dependent Claim
15 words
The process according to claim 2 wherein said mixture contains 28.6% of organic tin compound.
Claim 9
Dependent Claim
15 words
The process according to claim 7 wherein the amount of said mixture is 40-70 ppm.
Claim 10
Dependent Claim
17 words
The process according to claim 2 in which said mixture contains 43% of said organic tin compound.
Claim 11
Dependent Claim
14 words
The method of claim 9 wherein the amount of said mixture is 40-70 ppm.
Claim 12
Dependent Claim
41 words
A biocidal composition comprising a synergistic mixture of 20 to 43 weight percent organic tin compound selected from the group consisting of tributyl tin oxide and tributyl tin benzoate and 80 to 57 percent by weight of tetradecyl dimethyl sulfonium methosulfate.
Claim 13
Dependent Claim
41 words
A biocidal composition comprising a synergistic mixture of 20 to 43 weight percent organic tin compound selected from the group consisting of tributyl tin oxide and tributyl tin benzoate and 80 to 57 percent by weight of tetradecyl dimethyl sulfonium methosulfate.
Claim 14
Dependent Claim
15 words
The composition according to claim 11 wherein the organic tin compound is tributyl tin oxide.
Claim 15
Dependent Claim
14 words
The composition of claim 12 in which said mixture contains 25-35% organic tin compound.
Claim 16
Dependent Claim
17 words
The composition according to claim 12 in which said mixture contains 20% of said organic tin compound.
Claim 17
Dependent Claim
16 words
The composition according to claim 12 wherein said mixture contains 28.6% of said organic tin compound.
Claim 18
Dependent Claim
16 words
The composition according to claim 12 wherein said mixture contains 43% of said organic tin compound.
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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) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |