US2963431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for treating liquids with ion exchange materials
Assignee: GEA Group AG
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Filing: 1955-06-20
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Granted: 1960-12-06
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Dorn Rolf Karl
- 👤 Wisfeld Werner
- 👤 Herrmann Erich
- 👤 Derenk Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:24
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR THE ION EXCHANGE TREATMENT OF A LIQUID COMPRISING REPEATEDLY CIRCULATING THE LIQUID UNDER TREATMENT AND ION EXCHANGE MATERIAL IN THE SAME DIRECTION WITHIN A TREATING ZONE PROVIDING A CYCLIC PATH HAVING AN UPWARDLY EXTENDING PORTION AND A DOWNWARDLY EXTENDING PORTION, CONTINUOUSLY INTRODUCING LIQUID TO BE TREATED AND FRESH ION EXCHANGE MATERIAL INTO SAID TREATING ZONE, AND CONTINUOUSLY WITHDRAWING TREATED LIQUID AND USED ION EXCHANGE MATERIAL FROM SAID TREATING ZONE IN PROPORTION TO THE QUANTITY OF LIQUID TO BE TREATED AND FRESH ION EXCHANGE MATERIAL INTRODUCED THERETO, THE QUANTITY OF LIQUID AND ION EXCHANGE MATERIAL PASSING THROUGH ANY CROSS SECTION OF SAID CYCLIC PATH PER TIME UNIT BEING A MULTIPLE OF THE QUANTITY OF TREATED LIQUID AND USED ION EXCHANGE MATERIAL REMOVED FROM, AND UNTREATED LIQUID AND FRESH
Claim 2
Dependent Claim
130 words
A PROCESS FOR THE ION EXCHANGE TREATMENT OF A LIQUID COMPRISING REPEATEDLY CIRCULATING THE LIQUID UNDER TREATMENT AND ION EXCHANGE MATERIAL IN THE SAME DIRECTION WITHIN A TREATING ZONE PROVIDING A CYCLIC PATH HAVING AN UPWARDLY EXTENDING PORTION AND A DOWNWARDLY EXTENDING PORTION, CONTINUOUSLY INTRODUCING LIQUID TO BE TREATED AND FRESH ION EXCHANGE MATERIAL INTO SAID TREATING ZONE, AND CONTINUOUSLY WITHDRAWING TREATED LIQUID AND USED ION EXCHANGE MATERIAL FROM SAID TREATING ZONE IN PROPORTION TO THE QUANTITY OF LIQUID TO BE TREATED AND FRESH ION EXCHANGE MATERIAL INTRODUCED THERETO, THE QUANTITY OF LIQUID AND ION EXCHANGE MATERIAL PASSING THROUGH ANY CROSS SECTION OF SAID CYCLIC PATH PER TIME UNIT BEING A MULTIPLE OF THE QUANTITY OF TREATED LIQUID AND USED ION EXCHANGE MATERIAL REMOVED FROM, AND UNTREATED LIQUID AND FRESH
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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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |