Patent US3354618A successfully refreshed from Google Patents.
US3354618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas exchanger
Assignee: General Electric Co
•
Filing: 1965-08-26
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Granted: 1967-11-28
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Dounoncos Angelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:33
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/08; B01D63/082; B01D2313/00; B01D2313/14; B01D2319/00; B01D2319/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A GAS TRANSFER APPARTUS COMPRISING A PLURALITY OF IMPERFORATE MEMBRANES PLACED IN CLOSELY SPACED, SUBSTANTIALLY PARALLEL RELATIONSHIP TO EACH OTHER TO DEFINE FLOW AREAS THEREBETWEEN, MEANS DEFINING A FIRST PASSAGE FOR DIRECTING FLOW OF A FEED FLUID IN PROXIMITY TO AT LEAST ONE OF SAID MEMBRANES, WHICH FLUID IS COMPOSED OF AT LEAST ONE GAS WHICH READILY PERMEATES SAID MEMBRANE, MEANS DEFINING A SECOND PASSAGE FOR DIRECTING FLOW OF A RECEIVING FLUID IN PROXIMITY TO THE OTHER SIDE OF SAID MEMBRANE IN A DIRECTION SUBSTANTIALLY OPPOSITE THE DIRECTION OF FLOW OF THE FEED FLUID, FOR PROVIDING A PARTIAL PRESSURE DIFFERENTIAL THAT RESULTS IN AN OP-
Claim 2
Dependent Claim
105 words
A GAS TRANSFER APPARTUS COMPRISING A PLURALITY OF IMPERFORATE MEMBRANES PLACED IN CLOSELY SPACED, SUBSTANTIALLY PARALLEL RELATIONSHIP TO EACH OTHER TO DEFINE FLOW AREAS THEREBETWEEN, MEANS DEFINING A FIRST PASSAGE FOR DIRECTING FLOW OF A FEED FLUID IN PROXIMITY TO AT LEAST ONE OF SAID MEMBRANES, WHICH FLUID IS COMPOSED OF AT LEAST ONE GAS WHICH READILY PERMEATES SAID MEMBRANE, MEANS DEFINING A SECOND PASSAGE FOR DIRECTING FLOW OF A RECEIVING FLUID IN PROXIMITY TO THE OTHER SIDE OF SAID MEMBRANE IN A DIRECTION SUBSTANTIALLY OPPOSITE THE DIRECTION OF FLOW OF THE FEED FLUID, FOR PROVIDING A PARTIAL PRESSURE DIFFERENTIAL THAT RESULTS IN AN 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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |