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US4495200A
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Process for the control of sulfate-reducing bacteria
Assignee: Phillips Petroleum Co
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Filing: 1983-10-06
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Granted: 1985-01-22
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Expires: 2003-10-06
Abstract
Abstract A process for the control of planktonic sulfate-reducing bacteria in industrial process water systems which comprises the step of treating said system with a dithiocarbamate of the formula: ##STR1## wherein R is a C 1 to C 4 alkyl radical, R 1 is either a methylene or ethylene radical, n is 0, 1, 2, or 3 and X is a Group IA alkali metal.
Inventors
- 👤 Merlin R. Lindstrom
- 👤 Leslie J. Henshaw
- 👤 Harold W. Mark
- 👤 James B. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:07
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; A; A01; A01N; A01N47/00; A01N47/08; A01N47/10; A01N47/12; A01N47/14; Y; Y10; Y10S; Y10S507/00; Y10S507/92
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A process for the control of planktonic sulfate-reducing bacteria in industrial process water systems which comprises the step of treating said systems with a dithiocarbamate of the formula: ##STR4## wherein R is a C 1 to C 4 alkyl radical, R 1 is either a methylene or ethylene radical, n is 0, 1, 2, or 3 and X is a Group IA alkali metal and wherein said dithiocarbamate is incorporated into the said water systems in a concentration between about 1 ppm and 10,000 ppm.
Claim 2
Dependent Claim
85 words
A process for the control of planktonic sulfate-reducing bacteria in industrial process water systems which comprises the step of treating said systems with a dithiocarbamate of the formula: ##STR4## wherein R is a C 1 to C 4 alkyl radical, R 1 is either a methylene or ethylene radical, n is 0, 1, 2, or 3 and X is a Group IA alkali metal and wherein said dithiocarbamate is incorporated into the said water systems in a concentration between about 1 ppm and 10,000 ppm.
Claim 3
Dependent Claim
24 words
A process according to claim 1 wherein said dithiocarbamate is incorporated into the water in a concentration between about 10 ppm and 500 ppm.
Claim 4
Dependent Claim
15 words
A process according to claim 1 wherein the sulfate-reducing bacteria are of the genus Desulfovibrio.
Claim 5
Dependent Claim
13 words
A process according to claim 1 wherein said dithiocarbamate is sodium N-benzyl, N-methyl-dithiocarbamate.
References Cited (Backward Citations)
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |