US3083544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectification of gases
Assignee: Linde GmbH
•
Filing: 1959-09-23
•
Granted: 1963-04-02
•
Expires: 1979-09-23
Abstract
No abstract record available.
Inventors
- 👤 Jakob Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0276; F25J3/0204; F25J3/0219; F25J3/0223; F25J3/04; F25J3/04006; F25J3/04078; F25J3/0409; F25J3/04248; F25J3/04284; F25J3/0429; F25J3/04303; F25J3/04333; F25J3/04339; F25J3/04351; F25J3/04406; F25J3/04412; F25J3/04521; F25J3/04563; F25J3/04587; F25J3/04612; F25J2205/00; F25J2205/02; F25J2205/04; F25J2205/24; F25J2205/30; F25J2245/00; F25J2245/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A PROCESS OF SEPARATING COMPRESSED GAS MIXTURES BY RECTIFICATION IN A PRELIMINARY RECTIFICATION COLUMN AND AT LEAST ONE FURTHER RECTIFICATION COLUMN AT LOW TEMPERATURE AND THE PRODUCTION OF HIGH PRESSURE GASES THEREOF, THE METHOD OF PRODUCING COLD WHICH COMPRISES WITHDRAWING A COMPONENT OF A GAS MIXTURE TO BE SEPARATED FROM A RECTIFYING COLUMN AT LOW PRESSURE; WITHDRAWING A PUMPING SAID LIQUID TO SAID HIGH PESSURE; WITHDRAWING A GAS FROM THE PRELIMINARY RECTIFICATION COLUMN AND HEATING IT IN COUNTER-FLOW TO THE INCOMING GAS MIXTURE, VAPORIZING SAID HIGH PRESSURE LIQUID BY HEAT-EXCHANGE WITH SAID GAS, THEREBY CONDENSING SAID GAS AT LEAST PARTIALLY TO FORM A LIQUID PART AND A GASEOUS PART THEREOF, SEPARATING THE GASEOUS PART FROM THE CONDENSED AND LIQUEFIED PART OF SAID GAS, LEADING THE LIQUEFIED PART OF SAID GAS INTO SAID PRELIMINARY RECTIFICATION COLUMN, WARMING THE GASEOUS PART OF SAID GAS AND EXPANDING IT BY THE PRODUCTION OF EXTERNAL WORK.
Claim 2
Dependent Claim
152 words
IN A PROCESS OF SEPARATING COMPRESSED GAS MIXTURES BY RECTIFICATION IN A PRELIMINARY RECTIFICATION COLUMN AND AT LEAST ONE FURTHER RECTIFICATION COLUMN AT LOW TEMPERATURE AND THE PRODUCTION OF HIGH PRESSURE GASES THEREOF, THE METHOD OF PRODUCING COLD WHICH COMPRISES WITHDRAWING A COMPONENT OF A GAS MIXTURE TO BE SEPARATED FROM A RECTIFYING COLUMN AT LOW PRESSURE; WITHDRAWING A PUMPING SAID LIQUID TO SAID HIGH PESSURE; WITHDRAWING A GAS FROM THE PRELIMINARY RECTIFICATION COLUMN AND HEATING IT IN COUNTER-FLOW TO THE INCOMING GAS MIXTURE, VAPORIZING SAID HIGH PRESSURE LIQUID BY HEAT-EXCHANGE WITH SAID GAS, THEREBY CONDENSING SAID GAS AT LEAST PARTIALLY TO FORM A LIQUID PART AND A GASEOUS PART THEREOF, SEPARATING THE GASEOUS PART FROM THE CONDENSED AND LIQUEFIED PART OF SAID GAS, LEADING THE LIQUEFIED PART OF SAID GAS INTO SAID PRELIMINARY RECTIFICATION COLUMN, WARMING THE GASEOUS PART OF SAID GAS AND EXPANDING IT BY THE PRODUCTION OF EXTERNAL WORK.
References Cited (Backward Citations)
US2122238A
Cited
DE884203C
Cited
US2827775A
Cited
US2708831A
Cited
US2822675A
Cited
US2785548A
Cited
US2895304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |