US2792903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for recovering enriched gaseous mixtures
Assignee: Individual
•
Filing: 1952-02-02
•
Granted: 1957-05-21
•
Expires: 1972-02-02
Abstract
No abstract record available.
Inventors
- 👤 Jean M Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/18; B01D53/1406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN APPARATUS FOR RECOVERING A GAS A ENRICHED GAS FROM A MIXTURE OF GASES HAVING A LOWER GAS A CONTENT THAN THE GAS A ENRICHED GAS, WHICH COMPRISES MEANS DEFINING AN UPRIGHT CHAMBER SUPPORTING A COLUMN OF SELECTIVE SOLVENT FOR GAS A, MEANS FEEDING THE SOLVENT INTO THE BOTTOM OF THE COLUMN, MEANS DRAWING OFF THE SOLVENT FROM THE TOP OF THE COLUMN, MEANS INTRODUCING SAID MIXTURE OF GASES INTO THE BOTTOM OF THE COLUMN, MEANS IN SAID CHAMBER DEFINING A SERIES OF SUPERIMPOSED SEPARATING ZONES INCLUDING GAS COLLECTING TRAPS, MEANS DIRECTING THE SOLVENT UPWARDLY IN SAID COLUMN THROUGH EACH OF SAID SEPARATING ZONES, AND DRAW-OFF MEANS CONNECTED TO EACH OF SAID GAS COLLECTING TRAPS AND REMOVING GASES COLLECTED THEREIN FROM SAID CHAMBER.
Claim 2
Independent Claim
123 words
AN APPARATUS FOR RECOVERING A GAS A ENRICHED GAS FROM A MIXTURE OF GASES HAVING A LOWER GAS A CONTENT THAN THE GAS A ENRICHED GAS, WHICH COMPRISES MEANS DEFINING AN UPRIGHT CHAMBER SUPPORTING A COLUMN OF SELECTIVE SOLVENT FOR GAS A, MEANS FEEDING THE SOLVENT INTO THE BOTTOM OF THE COLUMN, MEANS DRAWING OFF THE SOLVENT FROM THE TOP OF THE COLUMN, MEANS INTRODUCING SAID MIXTURE OF GASES INTO THE BOTTOM OF THE COLUMN, MEANS IN SAID CHAMBER DEFINING A SERIES OF SUPERIMPOSED SEPARATING ZONES INCLUDING GAS COLLECTING TRAPS, MEANS DIRECTING THE SOLVENT UPWARDLY IN SAID COLUMN THROUGH EACH OF SAID SEPARATING ZONES, AND DRAW-OFF MEANS CONNECTED TO EACH OF SAID GAS COLLECTING TRAPS AND REMOVING GASES COLLECTED THEREIN FROM SAID CHAMBER.
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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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |