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US3362174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous condensation in vacuum with plural refrigerants
Assignee: Air Liquide SA
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Filing: 1964-10-05
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Granted: 1968-01-09
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Carbonell Emile
- 👤 Martin Monique
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:28
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; B; B01; B01D; B01D8/00; F25J1/0002; F25J1/0012; F25J1/0015; F25J1/003; F25J1/0032; F25J1/0035; F25J1/0037; F25J1/004; F25J1/0045; F25J1/0047; F25J1/005; F25J1/0052; F25J1/006; F25J1/0062; F25J1/0067; F25J1/0203; F25J1/0208; G; G01; G01M; G01M9/00; G01M9/02; G01M9/04; F25J2205/00; F25J2205/20; F25J2270/00; F25J2270/14; F25J2270/16; F25J2280/00; F25J2280/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PROCESS FOR CONDENSING NORMALLY GASEOUS MEDIUM UNDER SUBATMOSPHERIC CONDITIONS IN ALTERNATING CHAMBERS, COMPRISING (1) CONDENSING SAID GASEOUS MEDIUM IN ONE OF SAID ALTERNATING CHAMBERS BY INDIRECT HEAT EXCHANGE WITH A PLURALITY OF REFRIGERATING LIQUIDS OF DISTINCTLY DIFFERENT BOILING POINT IN CLOSED SEPARATE REFRIGERATING CIRCUITS WHILE MAINTAINING SAID ONE CHAMBER UNDER SUBATMOSPHERIC CONDITIONS, SAID CLOSED REFRIGERATING CIRCUITS BEING INCLUDED IN EACH OF SAID ALTERNATING CHAMBERS, (2) WITHDRAWING THUS CONDENSED GAS FROM SAID OTHER CHAMBER, (3) VAPORIZING A PORTION OF SAID WITHDRAWN CONDENSED GAS TO PRODUCE AT LEAST A PORTION OF THE REFRIGERATION FOR ONE OF THE CIRCUITS IN ONE OF SAID CHAMBERS, (4) PASSING ANOTHER PORTION OF SAID WITHDRAWN CONDENSED GAS IN HEAT EXCHANGE WITH AT LEAST ONE OF SAID REFRIGERATING CIRCUITS, AND (5) ALTERNATING THE FLOW OF THE GASEOUS MEDIUM SO THAT IT IS CONDENSED AS IN STEP (1) IN THE OTHER CHAMBER AND IS WITHDARWN FROM THE ONE CHAMBER AS IN STEP (2) ABOVE.
Claim 2
Dependent Claim
156 words
A PROCESS FOR CONDENSING NORMALLY GASEOUS MEDIUM UNDER SUBATMOSPHERIC CONDITIONS IN ALTERNATING CHAMBERS, COMPRISING (1) CONDENSING SAID GASEOUS MEDIUM IN ONE OF SAID ALTERNATING CHAMBERS BY INDIRECT HEAT EXCHANGE WITH A PLURALITY OF REFRIGERATING LIQUIDS OF DISTINCTLY DIFFERENT BOILING POINT IN CLOSED SEPARATE REFRIGERATING CIRCUITS WHILE MAINTAINING SAID ONE CHAMBER UNDER SUBATMOSPHERIC CONDITIONS, SAID CLOSED REFRIGERATING CIRCUITS BEING INCLUDED IN EACH OF SAID ALTERNATING CHAMBERS, (2) WITHDRAWING THUS CONDENSED GAS FROM SAID OTHER CHAMBER, (3) VAPORIZING A PORTION OF SAID WITHDRAWN CONDENSED GAS TO PRODUCE AT LEAST A PORTION OF THE REFRIGERATION FOR ONE OF THE CIRCUITS IN ONE OF SAID CHAMBERS, (4) PASSING ANOTHER PORTION OF SAID WITHDRAWN CONDENSED GAS IN HEAT EXCHANGE WITH AT LEAST ONE OF SAID REFRIGERATING CIRCUITS, AND (5) ALTERNATING THE FLOW OF THE GASEOUS MEDIUM SO THAT IT IS CONDENSED AS IN STEP (1) IN THE OTHER CHAMBER AND IS WITHDARWN FROM THE ONE CHAMBER AS IN STEP (2) ABOVE.
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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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |