Patent US4614595A successfully refreshed from Google Patents.
US4614595A
Expired / Lapsed
US
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Method of water treatment
Assignee: CORAL Inc A CORP OF ILLINOIS
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Filing: 1985-06-24
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Granted: 1986-09-30
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Expires: 2005-06-24
Abstract
Abstract Method for clarifying bodies of water and removing staining from the containers therefor, particularly swimming pools, by the addition of chlorine and/or bromine ion and ammonium ion to the water.
Inventors
- 👤 Michael Azzarella
- 👤 Frederick L. Luth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:31
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F5/00; C02F5/08; C02F2103/00; C02F2103/42
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
83 words
A method for decolorizing color bodies in swimming pool water comprising establishing in said pool water a concentration of chloramines sufficient to decolorize said color bodies, said chloramines resulting from the addition to said pool water of between about 2 and about 10 ppm ammonium ions and between about 2.75 and 24.44 ppm chlorine ions, the level of addition of said ions to said pool water being selected to cause the free available chlorine content of said pool water to be substantially depleted.
Claim 2
Independent Claim
83 words
A method for decolorizing color bodies in swimming pool water comprising establishing in said pool water a concentration of chloramines sufficient to decolorize said color bodies, said chloramines resulting from the addition to said pool water of between about 2 and about 10 ppm ammonium ions and between about 2.75 and 24.44 ppm chlorine ions, the level of addition of said ions to said pool water being selected to cause the free available chlorine content of said pool water to be substantially depleted.
Claim 3
Dependent Claim
27 words
A method in accordance with claim 1 wherein the chemical balance of said pool water is returned to normal after decoloration of said color bodies is completed.
Claim 4
Dependent Claim
25 words
A method in accordance with claim 2 wherein said pool water is maintained at a temperature of between about 55° F. and about 110° F.
Claim 5
Independent Claim
20 words
A method in accordance with claaim 3 wherein said pool water has a pH between about 7.5 and about 8.2.
Claim 6
Independent Claim
20 words
A method in accordance with claaim 3 wherein said pool water has a pH between about 7.5 and about 8.2.
Claim 7
Dependent Claim
37 words
A method in accordance with claim 2 wherein said pool water has an alkalinity of between about 80 ppm and about 120 ppm and a cyanuric acid content of between about 25 ppm and about 75 ppm.
Claim 8
Dependent Claim
16 words
A method in accordance with claim 1 wherein the source of ammonium ion is ammonium sulfate.
Claim 9
Dependent Claim
21 words
A method in accordance with claim 6 wherein the source of chlorine ion is selected from sodium hypochlorite and calcium hypochlorite.
Claim 10
Independent Claim
84 words
A method for decolorizing color bodies in swimming pool water comprising establishing in said pool water a concentration of bromamines sufficient to decolorize said color bodies, said bromamines resulting from the addition to said pool water of between about 2 and about 10 ppm ammonium ions and between about 2.75 and about 24.44 pm bromine ions, the level of addition of said ions to said pool water being selected to cause the free available bromine content of said pool water to be substantially depleted.
Claim 11
Independent Claim
84 words
A method for decolorizing color bodies in swimming pool water comprising establishing in said pool water a concentration of bromamines sufficient to decolorize said color bodies, said bromamines resulting from the addition to said pool water of between about 2 and about 10 ppm ammonium ions and between about 2.75 and about 24.44 pm bromine ions, the level of addition of said ions to said pool water being selected to cause the free available bromine content of said pool water to be substantially depleted.
Claim 12
Dependent Claim
27 words
A method in accordance with claim 8 wherein the chemical balance of said pool water is returned to normal after decoloration of said color bodies is completed.
Claim 13
Dependent Claim
25 words
A method in accordance with claim 9 wherein said pool water is maintained at a temperature of between about 55° F. and about 110° F.
Claim 14
Dependent Claim
20 words
A method in accordance with claim 10 wherein said pool water has a pH between about 7.5 and about 8.2.
Claim 15
Dependent Claim
37 words
A method in accordance with claim 9 wherein said pool water has an alkalinity of between about 80 ppm and about 120 ppm and a cyanuric acid content of between about 25 ppm and about 75 ppm.
Claim 16
Dependent Claim
16 words
A method in accordance with claim 8 wherein the source of ammonium ion is ammonium sulfate.
Claim 17
Dependent Claim
19 words
A method in accordance with claim 13 wherein the source of bromine ion is 3-bromo, 1-chloro, b 5,5-dimethyl hydantoin.
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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |