US2947687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of hydrocarbons by permeation membrane
Assignee: American Oil Co
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Filing: 1954-10-29
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Granted: 1960-08-02
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Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/36; B01D61/364; B01D61/3641; C; C07; C07C; C07C7/00; C07C7/144; B01D2311/00; B01D2311/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN THE PROCESS OF SEPARATING A MIXTURE OF AT LEAST HYDROCARBONS BY INTRODUCING SAID MIXTURE INTO THE FEED ZONE OF A PERMEATION APPARATUS COMPRISED OF A FEED ZONE WHICH IS SEALED FROM A PERMEATE ZONE BY A THIN PLASTIC MEMBRANE IN WHICH ONE OF THE HYDROCARBONS CONTAINED IN SAID HYDROCARBON MIXTURE IS MORE SOLUBLE THAN OTHERS, IN WHICH PROCESS A PORTION OF THE MIXTURE OF HYDROCARBONS IS PERMEATED THROUGH SAID MEMBRANE INTO THE PERMEATE ZONE AND THE PERMEATED PORTION IS WITHDRAWN FROM SAID PERMEATE ZONE AND A NON-PERMEATED PORTION IS WITHDRAWN FROM THE FEED ZONE, SAID PERMEATED PORTION BEING ENRICHED IN THE HYDROCARBON WHICH IS MORE SOLUBLE IN THE MEMBRANE, THE IMPROVEMENT WHICH
Claim 2
Dependent Claim
113 words
IN THE PROCESS OF SEPARATING A MIXTURE OF AT LEAST HYDROCARBONS BY INTRODUCING SAID MIXTURE INTO THE FEED ZONE OF A PERMEATION APPARATUS COMPRISED OF A FEED ZONE WHICH IS SEALED FROM A PERMEATE ZONE BY A THIN PLASTIC MEMBRANE IN WHICH ONE OF THE HYDROCARBONS CONTAINED IN SAID HYDROCARBON MIXTURE IS MORE SOLUBLE THAN OTHERS, IN WHICH PROCESS A PORTION OF THE MIXTURE OF HYDROCARBONS IS PERMEATED THROUGH SAID MEMBRANE INTO THE PERMEATE ZONE AND THE PERMEATED PORTION IS WITHDRAWN FROM SAID PERMEATE ZONE AND A NON-PERMEATED PORTION IS WITHDRAWN FROM THE FEED ZONE, SAID PERMEATED PORTION BEING ENRICHED IN THE HYDROCARBON WHICH IS MORE SOLUBLE IN THE MEMBRANE, THE IMPROVEMENT WHICH
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |