US3132094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrafiltration of electrolyte solutions through ion-exchange memberanes
Assignee: Gulf Research and Development Co
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Filing: 1958-09-11
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Granted: 1964-05-05
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Expires: 1978-09-11
Abstract
No abstract record available.
Inventors
- 👤 Jr James G Mckelvey
- 👤 Kurt S Spiegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/14; B01D61/145; C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2218; C08J5/2231
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR DEIONIZATION OF AN ELECTROLYTE SOLUTION COMPRISING CONTACTING A SOLUTION CONTAINING AN ELECTROLYTE WITH ONE SURFACE OF AN ION-EXCHANGE MEMBRANE HAVING AN EXCHANGE CAPACITY-SPECIFIC HYDRAULIC PERMEABILITY RATIO IN THE RANGE OF ABOUT 3X108 TO 1X1010, AND ESTABLISHING A PRESSURE DIFFERENTIAL BETWEEN THE SURFACE OF THE MEMBRANE CONTACTED BY SAID SOLUTION AND ANOTHER SURFACE THEREOF SUFFCIENT TO FORCE LIQUID OF REDUCED ELECTROLYTE CONTENT THROUGH THE MEMBRANE.
Claim 2
Dependent Claim
67 words
A PROCESS FOR DEIONIZATION OF AN ELECTROLYTE SOLUTION COMPRISING CONTACTING A SOLUTION CONTAINING AN ELECTROLYTE WITH ONE SURFACE OF AN ION-EXCHANGE MEMBRANE HAVING AN EXCHANGE CAPACITY-SPECIFIC HYDRAULIC PERMEABILITY RATIO IN THE RANGE OF ABOUT 3X108 TO 1X1010, AND ESTABLISHING A PRESSURE DIFFERENTIAL BETWEEN THE SURFACE OF THE MEMBRANE CONTACTED BY SAID SOLUTION AND ANOTHER SURFACE THEREOF SUFFCIENT TO FORCE LIQUID OF REDUCED ELECTROLYTE CONTENT THROUGH THE MEMBRANE.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |