US3029196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodialysis of aqueous electrolyte solutions
Assignee: Individual
•
Filing: 1959-12-29
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Granted: 1962-04-10
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Matz Reuven
- 👤 Forgacs Chaim
- 👤 Perlmutter Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:35
CPC Classifications
B; B01; B01D; B01D65/00; B01D65/08; B01D61/00; B01D61/42; B01D61/44; B01D61/52; C; C02; C02F; C02F1/00; C02F1/46; C02F1/469; C02F1/4693; B01D2321/00; B01D2321/20; B01D2321/2083; B01D2321/22; B01D2321/223; C02F1/4604; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/46115; C02F2201/4612; C02F2201/46125; C02F2201/4613; C02F2201/4615; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR ELECTRODIALYTICALLY DESALTING A SALINE SOLUTION, COMPRISING THE STEPS OF DIRECTING SAID SALINE SOLUTION IN A CONTINOUS FLOW THROUGH A SUCESSION OF SPACED ALTERNATINGLY CATION-PERMEABLE AND ANION-PERMEABLE PERMESELECTIVE MEMBRANES, PASSING A CURRENT IN A UNIDIRECTIONAL SENSE THROUGH SAID SUCCESSION OF MEMBRANES, THEREBY CONCENTRATING SAID SOLUTION BETWEEN ALTERNATE THE REMAINING PAIRS OF SAID MEMBRANES, AND PERIODICALLY INTERRUPTING IN SUCCESSIVE CYCLES THE FLOW OF CURRENT IN SAID SENSE PRIOR TO THE ONSET OF SCALE FORMATION DURING SAID CONTINOUS FLOW FOR AN INTERVAL OF FINITE DURATION CORRESPONDING TO A SUBSTANTIAL FRACTION OF THE LENGHT OF A CYCLE, THE MAXIMUM RATIO OF SAID DURATION TO THE REMAINDER OF THE CYCLE BEING SUBSTANTIALLY 1:4.
Claim 2
Dependent Claim
111 words
A PROCESS FOR ELECTRODIALYTICALLY DESALTING A SALINE SOLUTION, COMPRISING THE STEPS OF DIRECTING SAID SALINE SOLUTION IN A CONTINOUS FLOW THROUGH A SUCESSION OF SPACED ALTERNATINGLY CATION-PERMEABLE AND ANION-PERMEABLE PERMESELECTIVE MEMBRANES, PASSING A CURRENT IN A UNIDIRECTIONAL SENSE THROUGH SAID SUCCESSION OF MEMBRANES, THEREBY CONCENTRATING SAID SOLUTION BETWEEN ALTERNATE THE REMAINING PAIRS OF SAID MEMBRANES, AND PERIODICALLY INTERRUPTING IN SUCCESSIVE CYCLES THE FLOW OF CURRENT IN SAID SENSE PRIOR TO THE ONSET OF SCALE FORMATION DURING SAID CONTINOUS FLOW FOR AN INTERVAL OF FINITE DURATION CORRESPONDING TO A SUBSTANTIAL FRACTION OF THE LENGHT OF A CYCLE, THE MAXIMUM RATIO OF SAID DURATION TO THE REMAINDER OF THE CYCLE BEING SUBSTANTIALLY 1:4.
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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |