US2732691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating gases
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN AN APPARATUS FOR THE SEPARATION OF GASES BY THE LIQUEFACTION AND RECTIFICATION OF A MIXTURE THEREOF, IN COMBINATION, AT LEAST ONE HEAT EXCHANGER, AN EVAPORATOR-CONDENSER, SAID EVAPORATOR-CONDENSER HAVING AN OXYGEN CONDUCTING COURSE AND AN AIR CONDUCTING COURSE IN CLOSE HEAT EXCHANGE RELATION WITH EACH OTHER, ANOTHER HEAT EXCHANGER, AN EXPANSIN ENGINE, A DOUBLE COLUMN HAVING HIGH AND LOW PRESSURE CHAMBER, A LIQUID OXYGEN PUMP, MEANS FOR CONNECTING SAID AT LEAST ONE HEAT EXCHANGER TO DELIVER AIR UNDER PRESSURE IN DIVIDED STREAMS TO THE AIR CONDUCTING COURSE OF SAID EVAPORATOR-CONDENSER AND TO SAID EXPANSION ENGINE, MEANS FOR DELIVERING AIR EXHAUSTED FROM SAID EXPANSION ENGINE TO THE HIGH PRESSURE CHAMBER OF SAID COLUMN VIA SAID OTHER HEAT EXCHANGER, MEANS INCLUDING A
Claim 2
Dependent Claim
120 words
IN AN APPARATUS FOR THE SEPARATION OF GASES BY THE LIQUEFACTION AND RECTIFICATION OF A MIXTURE THEREOF, IN COMBINATION, AT LEAST ONE HEAT EXCHANGER, AN EVAPORATOR-CONDENSER, SAID EVAPORATOR-CONDENSER HAVING AN OXYGEN CONDUCTING COURSE AND AN AIR CONDUCTING COURSE IN CLOSE HEAT EXCHANGE RELATION WITH EACH OTHER, ANOTHER HEAT EXCHANGER, AN EXPANSIN ENGINE, A DOUBLE COLUMN HAVING HIGH AND LOW PRESSURE CHAMBER, A LIQUID OXYGEN PUMP, MEANS FOR CONNECTING SAID AT LEAST ONE HEAT EXCHANGER TO DELIVER AIR UNDER PRESSURE IN DIVIDED STREAMS TO THE AIR CONDUCTING COURSE OF SAID EVAPORATOR-CONDENSER AND TO SAID EXPANSION ENGINE, MEANS FOR DELIVERING AIR EXHAUSTED FROM SAID EXPANSION ENGINE TO THE HIGH PRESSURE CHAMBER OF SAID COLUMN VIA SAID OTHER HEAT EXCHANGER, MEANS INCLUDING A
References Cited (Backward Citations)
US2552451A
Cited
US2588656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |