Patent US2923749A successfully refreshed from Google Patents.
US2923749A
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US
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Prevention of membrane rupture in a separatory process for oil soluble organic compounds using a non-porous plastic permeation membrane
Assignee: American Oil Co
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Filing: 1955-05-27
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Granted: 1960-02-02
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lee
- 👤 Robert C Binning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:40
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/36; B01D61/364; B01D61/3641; B01D2311/00; B01D2311/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
105 words
IN A PERMEATION PROCESS FOR THE SEPARATION OF A MIXTURE OF OIL SOLUBLE ORGANIC CHEMICALS WHICH MIXTURE CONTAINS AN EXCESSIVELY HIGH CONCENTRATION OF THE MORE PERMEABLE COMPONENT SUCH THAT CONTACT OF THE LIQUID MIXTURE OF ORGANIC CHEMICALS WITH A NON-POROUS PLASTIC PERMEATION MEMBRANE WOULD CAUSE THE MEMBRANE TO RUPTURE DURING PERMEATION DUE TO SAID EXCESSIVELY HIGH CONCENTRATION, THE IMPROVEMENT WHICH COMPRISES REDUCING THE CONCENTRATION OF SAID MORE PERMEABLE COMPONENT TO A LEVEL AT WHICH IT DOES NOT CAUSE RUPTURING OF THE MEMBRANE DURING PERMEATION BY THE STEP OF DILUTING SAID LIQUID MIXTURE OF OIL SOLUBLE ORGANIC CHEMICALS WITH A SATURATED HYDROCARBON MISCIBLE THEREWITH, SAID SATURATED
Claim 2
Dependent Claim
105 words
IN A PERMEATION PROCESS FOR THE SEPARATION OF A MIXTURE OF OIL SOLUBLE ORGANIC CHEMICALS WHICH MIXTURE CONTAINS AN EXCESSIVELY HIGH CONCENTRATION OF THE MORE PERMEABLE COMPONENT SUCH THAT CONTACT OF THE LIQUID MIXTURE OF ORGANIC CHEMICALS WITH A NON-POROUS PLASTIC PERMEATION MEMBRANE WOULD CAUSE THE MEMBRANE TO RUPTURE DURING PERMEATION DUE TO SAID EXCESSIVELY HIGH CONCENTRATION, THE IMPROVEMENT WHICH COMPRISES REDUCING THE CONCENTRATION OF SAID MORE PERMEABLE COMPONENT TO A LEVEL AT WHICH IT DOES NOT CAUSE RUPTURING OF THE MEMBRANE DURING PERMEATION BY THE STEP OF DILUTING SAID LIQUID MIXTURE OF OIL SOLUBLE ORGANIC CHEMICALS WITH A SATURATED HYDROCARBON MISCIBLE THEREWITH, SAID SATURATED
Claim 3
Dependent Claim
24 words
THE METHOD OF CLAIM 1 WHEREIN THE MIXTURE OF OIL SOLUBLE ORGANIC CHEMICALS TO BE SEPARATED IS A MIXTURE OF AROMATIC AND NON-AROMATIC HYDROCARBONS.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |