Patent US2833127A successfully refreshed from Google Patents.
US2833127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas separation control process
Assignee: Air Liquide SA
•
Filing: 1953-09-28
•
Granted: 1958-05-06
•
Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 Vesque Henri
- 👤 Percin Gerard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:35
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A PROCESS FOR SEPARATING A GASEOUS MIXTURE INTO ITS CONSTITUENTS BY SUCCESSIVE FRACTIONATION A LOW TEMPERATURE IN A HIGHER PRESSURE ZONE AND A LOWER PRESSURE ZONE, IN WHICH ARE OBTAINED, IN THE HIGHER PRESSURE ZONE, A LIQUID RICH IN A HIGHER BOILING CONSTITUENT AND A GAS RICH IN A LOWER BOILING CONSTITUENT, AND IN THE LOWER PRESSURE ZONE, A LIQUID SUBSTANTIALLY PURE IN THE HIGHER BOILING CONSTITUENT AND A GAS SUBSTANTIALLY PURE IN THE LOWER BOILING CONSTITUENT, COMPRISING, VAPORIZING THE LIQUID SUBSTANTIALLY PURE IN THE HIGHER BOILING CONSTITUENT BY FLOWING IT AT AN ADJUSTABLE, RATE IN INDIRECT HEAT EXCHANGE WITH THE GAS RICH IN THE LOWER BOILING CONSTITUENT, DIVIDING THE FLOW OF SAID GAS RICH IN THE LOWER BOILING CONSTITUENT INTO TWO PARTS, LIQUEFYING A FIRST PART OF SAID GAS BY SAID INDIRECT HEAT EXCHANGE WITH THE LIQUID SUBSTANTIALLY PURE IN THE HIGHER BOILING CONSTITUENT AND FEEDING IT TO AT LEAST ON OF SAID FRACTIONATION ZONE, EXPANDING WITH EXTERNAL WORK THE SECOND PART OF SAID GAS TO A CONSTANT LOW PRESSURE AND THEREBY PRODUCING SOLD, AND VARYING THE RATE
Claim 2
Dependent Claim
179 words
A PROCESS FOR SEPARATING A GASEOUS MIXTURE INTO ITS CONSTITUENTS BY SUCCESSIVE FRACTIONATION A LOW TEMPERATURE IN A HIGHER PRESSURE ZONE AND A LOWER PRESSURE ZONE, IN WHICH ARE OBTAINED, IN THE HIGHER PRESSURE ZONE, A LIQUID RICH IN A HIGHER BOILING CONSTITUENT AND A GAS RICH IN A LOWER BOILING CONSTITUENT, AND IN THE LOWER PRESSURE ZONE, A LIQUID SUBSTANTIALLY PURE IN THE HIGHER BOILING CONSTITUENT AND A GAS SUBSTANTIALLY PURE IN THE LOWER BOILING CONSTITUENT, COMPRISING, VAPORIZING THE LIQUID SUBSTANTIALLY PURE IN THE HIGHER BOILING CONSTITUENT BY FLOWING IT AT AN ADJUSTABLE, RATE IN INDIRECT HEAT EXCHANGE WITH THE GAS RICH IN THE LOWER BOILING CONSTITUENT, DIVIDING THE FLOW OF SAID GAS RICH IN THE LOWER BOILING CONSTITUENT INTO TWO PARTS, LIQUEFYING A FIRST PART OF SAID GAS BY SAID INDIRECT HEAT EXCHANGE WITH THE LIQUID SUBSTANTIALLY PURE IN THE HIGHER BOILING CONSTITUENT AND FEEDING IT TO AT LEAST ON OF SAID FRACTIONATION ZONE, EXPANDING WITH EXTERNAL WORK THE SECOND PART OF SAID GAS TO A CONSTANT LOW PRESSURE AND THEREBY PRODUCING SOLD, AND VARYING THE RATE
References Cited (Backward Citations)
US2380417A
Cited
DE839200C
Cited
US2541409A
Cited
DE884203C
Cited
US2423273A
Cited
US2525660A
Cited
US2527623A
Cited
US2626510A
Cited
US2650482A
Cited
DE861853C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |