US3553126A
Expired / Lapsed
US
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Method of removal of molybdate ions from water
Assignee: ALFRED W OBERHOFER
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Filing: 1968-06-13
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Granted: 1971-01-05
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Expires: 1988-06-13
Abstract
Abstract SELECTIVE REMOVAL OF MOLYBDATE IONS FROM WATER BY CONTACTING THE WATER WITH AN ACIDIFIED, BASIC ANION EXCHANGE RESIN, THE PH OF THE INFLUENT BEING ADJUSTED WITHIN THE RANGE FROM 3.0 TO 4.5 SO AS TO OPERATE AT MAXIMUM CAPACITY FOR THE RESIN.
Inventors
- 👤 Alfred W Oberhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:24
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; B; B01; B01J; B01J41/00; B01J41/04; B01J41/07; C01; C01G; C01G39/00; C01G39/003; C02F2101/00; C02F2101/10; C02F2101/20; C02F2209/00; C02F2209/06
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |