US3156644A
Expired / Lapsed
US
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Deionization process
Assignee: Rohm and Haas Co
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Filing: 1961-07-25
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Granted: 1964-11-10
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Kunin Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/14; B; B01; B01J; B01J39/00; B01J41/00; B01J41/04; B01J41/07; B01J41/08; B01J41/12; B01J41/13; B01J49/00; B01J49/05; C01; C01D; C01D7/00; C01D7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR THE REMOVAL OF IONIZABLE MATTER FROM FLUIDS WHICH COMPRISES PASSAGE OF THE FLUIDS THROUGH A BED OF A WEAKLY BASIC ANION EXCHANGER, WHICH HAS BEEN CONVERTED TO THE BICARBONATE FORM BY CARBONATION WITH CO2, SO AS TO CONVERT ANY SALT OF A HIGHLY IONIZED ACID TO ITS CORRESPONDING BICARBONATE, PASSING THE EFFLUENT FROM SAID WEAKLY BASIC ANION EXCHANGE BED THROUGH AN ACIDIC CATION EXCHANGER IN THE HYDROGEN FORM TO REMOVE THE CATIONS AND TO LIVERATE AND EXPEL CARBON DIOXIDE THEREFROM, AND DRAWING OFF THE THUS DEGASIFIED EFFLUENT AS THE DEIONIZED FLUID.
Claim 2
Dependent Claim
94 words
A PROCESS FOR THE REMOVAL OF IONIZABLE MATTER FROM FLUIDS WHICH COMPRISES PASSAGE OF THE FLUIDS THROUGH A BED OF A WEAKLY BASIC ANION EXCHANGER, WHICH HAS BEEN CONVERTED TO THE BICARBONATE FORM BY CARBONATION WITH CO2, SO AS TO CONVERT ANY SALT OF A HIGHLY IONIZED ACID TO ITS CORRESPONDING BICARBONATE, PASSING THE EFFLUENT FROM SAID WEAKLY BASIC ANION EXCHANGE BED THROUGH AN ACIDIC CATION EXCHANGER IN THE HYDROGEN FORM TO REMOVE THE CATIONS AND TO LIVERATE AND EXPEL CARBON DIOXIDE THEREFROM, AND DRAWING OFF THE THUS DEGASIFIED EFFLUENT AS THE DEIONIZED FLUID.
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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |