Patent US4239622A successfully refreshed from Google Patents.
US4239622A
Expired / Lapsed
US
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Process for the disinfection of water
Assignee: Solvay Interox Ltd
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Filing: 1978-05-17
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Granted: 1980-12-16
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Expires: 1998-05-17
Abstract
Abstract A process for disinfecting a water supply, employing as disinfectant a combination of monochloroamine and hydrogen peroxide for use as a disinfectant. The concentration of monochloroamine is preferably at least 0.02 ppm and generally not more than 0.5 ppm. The concentration of hydrogen peroxide is preferably at least 0.1 ppm and often not more than 1 ppm. Preferably the weight ratio of hydrogen peroxide to monochloroamine is in the range of 4:1 to 20:1. An advantage of employing a combination of monochloroamine and hydrogen peroxide as disinfectant is that a comparatively long lasting residual bactericide is thereby provided.
Inventors
- 👤 John W. Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:32
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; A; A01; A01N; A01N59/00; C02F1/722
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
26 words
A process for disinfecting a water supply employing as disinfectant, in combination, 0.025-0.1 ppm monochloroamine and 0.1 to 0.5 ppm hydrogen peroxide in the water supply.
Claim 2
Dependent Claim
26 words
A process for disinfecting a water supply employing as disinfectant, in combination, 0.025-0.1 ppm monochloroamine and 0.1 to 0.5 ppm hydrogen peroxide in the water supply.
Claim 3
Dependent Claim
19 words
A process according to claim 1 wherein the weight ratio of hydrogen peroxide to monochloroamine is at least 2:1.
Claim 4
Dependent Claim
20 words
A process according to claim 1 wherein the weight ratio of hydrogen peroxide to monochloroamine is not more than 50:1.
Claim 5
Dependent Claim
23 words
A process according to claim 1 wherein the weight ratio of hydrogen peroxide to monochloroamine is in the range of 4:1 to 20:1.
References Cited (Backward Citations)
US2917428A
Cited
US2944967A
Cited
US3189518A
Cited
US3386915A
Cited
US3454427A
Cited
JPS5132057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |