US3337451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange method and composition for the desalination of water
Assignee: Pfaudler Permutit Inc
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Filing: 1965-03-01
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Granted: 1967-08-22
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Calmon Calvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:29
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/02; B01J47/00; B01J47/018; B01J47/019
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
A METHOD OF DESALTING WTER COMPRISING THE STEPS OF PREPARING A CATION EXCHANGE MATERIAL BY: (A) CONTACTING AN ACTIVE HYDROGEN INORGANIC CATION EXCHANGE MATERIAL BASED UPON AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, TITANIUM, AND BISMUTH, SAID EXCHANGE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM PHOSPHATE, ZIRCONIUM TUNGSTATE, ZIRCONIUM MOLYBDATE, TITANIUM PHOSPHATE, TITANIUM TUNGSTATE, TITANIUM MOLYBDATE, BISMUTH PHOSPHATE, BISMUTH TUNGSTATE AND BISMUTH MOLYBDATE, WITH A BASIC SOLUTION TO CONVET SAID MATERIAL TO AN INTERMEDIATE BASIC FORM; (B) RINSING SAID MATERIAL; (C) CONTACTING SAID MATERIAL WITH A SILVER SALT SOLUTION FOR A TIME SUFFICIENT TO CONVERT IT FROM SAID BASIC FORM TO A SILVER FORM; (D) CONTACTING SAID WATER WITH THE SILVER FORM CATION EXCHANGE MATERIAL; (E) AND FILTERING THE WATER FROMTHE SOLIDS OBTAINED.
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |