Patent US3203873A successfully refreshed from Google Patents.
US3203873A
Expired / Lapsed
US
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Process for scale prevention in saline water evaporator
Assignee: ChampionX LLC
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Filing: 1962-03-15
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Granted: 1965-08-31
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Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis F Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:03
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/042; Y; Y10; Y10S; Y10S159/00; Y10S159/13; Y10S203/00; Y10S203/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CONTINUOUS PROCESS FOR PREVENTING THE DEPOSIT OF SCALE ON THE SURFACES OF THE HEAT-EXCHANGERS OF A MULTIPLE EFFECT DISTILLATION UNIT WHICH COMPRISES: PASSING A CATION-EXCHANGE MATERIAL INTO THE FIRST EFFECT OF SAID DISTILLATION UNIT ALONG WITH A SALINE WATER INFLUENT WHICH IN ADDITION TO SODIUM IONS CONTAINS SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM IONS; CONTINUOUSLY REMOVING SAID CATION-EXCHANGE MATERIAL AND THE NONVAPORIZED FRACTION OF SAID INFLUENT FROM SAID EFFECT; SEPARATING SAID CATION-EXCHANGE MATERIAL FROM SAID NONVAPORIZED FRACTION; PASSING SAID NONVAPORIZED FRACTION TO THE SECOND AND SUBSEQUENT EFFECT OF SAID DISTILLATION UNIT; CONTACTING SAID CATION-EXCHANGE MATERIAL WITH THE NONVAPORIZED FRACTION LEAVING THE LAST EFFECT OF
Claim 2
Dependent Claim
108 words
A CONTINUOUS PROCESS FOR PREVENTING THE DEPOSIT OF SCALE ON THE SURFACES OF THE HEAT-EXCHANGERS OF A MULTIPLE EFFECT DISTILLATION UNIT WHICH COMPRISES: PASSING A CATION-EXCHANGE MATERIAL INTO THE FIRST EFFECT OF SAID DISTILLATION UNIT ALONG WITH A SALINE WATER INFLUENT WHICH IN ADDITION TO SODIUM IONS CONTAINS SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM IONS; CONTINUOUSLY REMOVING SAID CATION-EXCHANGE MATERIAL AND THE NONVAPORIZED FRACTION OF SAID INFLUENT FROM SAID EFFECT; SEPARATING SAID CATION-EXCHANGE MATERIAL FROM SAID NONVAPORIZED FRACTION; PASSING SAID NONVAPORIZED FRACTION TO THE SECOND AND SUBSEQUENT EFFECT OF SAID DISTILLATION UNIT; CONTACTING SAID CATION-EXCHANGE MATERIAL WITH THE NONVAPORIZED FRACTION LEAVING THE LAST EFFECT OF
References Cited (Backward Citations)
US2127450A
Cited
US3000795A
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US2979442A
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US3021265A
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US3026261A
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US3056651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |