Patent US2848403A successfully refreshed from Google Patents.
US2848403A
Expired / Lapsed
US
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Process for electrodialyzing liquids
Assignee: Veolia WTS Systems USA Inc
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Filing: 1954-05-06
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Granted: 1958-08-19
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Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Norman W Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:19
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; A; A23; A23C; A23C9/00; A23C9/14; A23C9/144; B23; B23F; B23F23/00; B23F23/08; B23Q; B23Q16/00; B23Q16/02; B23Q16/04; B23Q16/06; B23Q16/065; C; C13; C13B; C13B20/00; C13B20/18; C02; C02F; C02F1/00; C02F1/46; C02F1/4604; C02F1/469
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF MODIFYING THE CONCENTRATION OF AN ELECTROLYTE SOLUTION COMPRISING PASSING A FIRST FEED STREAM THROUGH DILUTING CHAMBERS OF AN ELECTRODIALYSIS UNIT HAVING A PLURALITY OF CONCENTRATING AND DILUTING CHAMBERS DEFINED BETWEEN ALTERNATE ANION PERMEABLE MEMBRANES AND CATION PERMEABLE MEMBRANES SAID MEMBRANES HAVING A THICKNESS BETWEEN ABOUT 0.1 MM. AND ABOUT 1 MM. AND SAID DILUTING CHAMBERS HAVING A THICKNESS OF ABOUT 0.5 MM. TO ABOUT 2 MM. PASSING A SECOND FEED STREAM THROUGH THE ALTERNATE CONCENTRATING CHAMBERS, PASSING A DIRECT CURRENT IN SERIES ACROSS THE ALTERNATING CHAMBERS AND MEMBRANES, AND PASSING THE TWO FEED STREAMS IN
Claim 2
Independent Claim
98 words
THE METHOD OF MODIFYING THE CONCENTRATION OF AN ELECTROLYTE SOLUTION COMPRISING PASSING A FIRST FEED STREAM THROUGH DILUTING CHAMBERS OF AN ELECTRODIALYSIS UNIT HAVING A PLURALITY OF CONCENTRATING AND DILUTING CHAMBERS DEFINED BETWEEN ALTERNATE ANION PERMEABLE MEMBRANES AND CATION PERMEABLE MEMBRANES SAID MEMBRANES HAVING A THICKNESS BETWEEN ABOUT 0.1 MM. AND ABOUT 1 MM. AND SAID DILUTING CHAMBERS HAVING A THICKNESS OF ABOUT 0.5 MM. TO ABOUT 2 MM. PASSING A SECOND FEED STREAM THROUGH THE ALTERNATE CONCENTRATING CHAMBERS, PASSING A DIRECT CURRENT IN SERIES ACROSS THE ALTERNATING CHAMBERS AND MEMBRANES, AND PASSING THE TWO FEED STREAMS IN
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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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |