Patent US4288430A successfully refreshed from Google Patents.
US4288430A
Expired / Lapsed
US
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Disinfectant chlorinated cyanurate containing compositions and method of use
Assignee: Purdue Research Foundation
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Filing: 1979-08-06
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Granted: 1981-09-08
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Expires: 1999-08-06
Abstract
Abstract A disinfectant composition for use in water conditioning systems is produced by dry mixing sodium chloride and a chlorinated cyanurate and pelletizing the mixture. The composition releases free chlorine to disinfect brine solutions used in regenerating domestic water conditioning ion exchange columns and prevents bacterial contamination of such columns.
Inventors
- 👤 James E. Etzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:16
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; A; A01; A01N; A01N25/00; A01N25/12; A01N59/00; B; B01; B01J; B01J49/00; B01J49/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A method of disinfecting sodium chloride brine solutions held in a brine storage tank which is in fluid connection with an ion exchange column containing ion exchange resins for water softening, said brine being used to regenerate said ion exchange resins and the disinfecting of said brine thereby avoiding bacterial contamination of said resins, comprising adding to water in said brine storage tank a pelletized mixture of sodium chloride and a bactericidally effective amount of a chlorinated cyanurate selected from the group consisting of potassium dichloroisocyanurate and sodium dichloroisocyanurate, and dissolving said pelletized mixture in said water to provide both the chlorinated cyanurate to avoid bacterial contamination of the brine and the sodium chloride to form the brine solution for regeneration of said ion exchange resins.
Claim 2
Independent Claim
126 words
A method of disinfecting sodium chloride brine solutions held in a brine storage tank which is in fluid connection with an ion exchange column containing ion exchange resins for water softening, said brine being used to regenerate said ion exchange resins and the disinfecting of said brine thereby avoiding bacterial contamination of said resins, comprising adding to water in said brine storage tank a pelletized mixture of sodium chloride and a bactericidally effective amount of a chlorinated cyanurate selected from the group consisting of potassium dichloroisocyanurate and sodium dichloroisocyanurate, and dissolving said pelletized mixture in said water to provide both the chlorinated cyanurate to avoid bacterial contamination of the brine and the sodium chloride to form the brine solution for regeneration of said ion exchange resins.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said pelletized mixture contains a weight ratio of chlorinated cyanurate to sodium chloride in the range of 6.5×10 -3 to 1.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |