US2953502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of azeotropic mixtures
Assignee: American Oil Co
•
Filing: 1955-05-24
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Granted: 1960-09-20
•
Expires: 1975-05-24
Abstract
No abstract record available.
Inventors
- 👤 Robert C Binning
- 👤 Robert J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/36; B01D61/364; B01D61/3641; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/29; B21C37/292; C; C07; C07C; C07C45/00; C07C45/78; C07C45/786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS OF SEPARATING AN AZEOTROPIC MIXTURE WHICH COMPRISES INTRODUCING SAID AZEOTROPIC MIXTURE INTO THE FEED CHAMBER OF A PERMEATION APPARATUS COMPRISED OF A FEED CHAMBER SEALED FROM A PERMEATE ZONE BY A THIN PLASTIC MEMBRANE IN WHICH ONE OF THE COMPONENTS OF SAID AZEOTROPIC MIXTURE IS PREFERENTIALLY SOLUBLE, MAINTAINING THE MIXTURE IN THE FEED CHAMBER IN THE LIQUID PHASE, CONTACTING THE LIQUID PHASE MIXTURE IN THE FEED CHAMBER WITH THE PLASTIC MEMBRANE, PERMEATING A PORTION OF THE LIQUID MIXTURE INTO AND THROUGH SAID MEMBRANE AND VAPORIZING THE PERMEATED PORTION FROM THE OP-
Claim 2
Dependent Claim
93 words
THE PROCESS OF SEPARATING AN AZEOTROPIC MIXTURE WHICH COMPRISES INTRODUCING SAID AZEOTROPIC MIXTURE INTO THE FEED CHAMBER OF A PERMEATION APPARATUS COMPRISED OF A FEED CHAMBER SEALED FROM A PERMEATE ZONE BY A THIN PLASTIC MEMBRANE IN WHICH ONE OF THE COMPONENTS OF SAID AZEOTROPIC MIXTURE IS PREFERENTIALLY SOLUBLE, MAINTAINING THE MIXTURE IN THE FEED CHAMBER IN THE LIQUID PHASE, CONTACTING THE LIQUID PHASE MIXTURE IN THE FEED CHAMBER WITH THE PLASTIC MEMBRANE, PERMEATING A PORTION OF THE LIQUID MIXTURE INTO AND THROUGH SAID MEMBRANE AND VAPORIZING THE PERMEATED PORTION FROM THE OP-
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |