US2909038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of gases
Assignee: Phillips Petroleum Co
•
Filing: 1955-12-09
•
Granted: 1959-10-20
•
Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jack R Williams
- 👤 Robert A Koble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:40
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/005; C07C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE REMOVAL OF A GAS FROM A MIXTURE OF GASES WHICH ARE NORMALLY GASEOUS WHICH COMPRISES LIQUEFYING SAID MIXTURE BY SUBJECTING SAID MIXTURE TO CONDITIONS OF TEMPERATURE AND PRESSURE WHICH WILL LIQUELY THE SAME AND CONTACTING THE SAID MIXTURE OF GASES AS A LIQUID WITH A SOLVENT ADAPTED UNDER THE CONDITIONS OF LIQUID-LIQUID CONTACT TO REMOVE FROM SAID MIXTURE A LIQUEFIED COMPONENT RECOVERING ON THE ONE HAND A STREAM FROM WHICH SAID COMPONENT HAS BEEN REMOVED AND ON THE OTHER HAND A SOLVENT RICH IN SAID REMOVED COMPONENT, FLASHING SAID SOLVENT RICH SAID REMOVED COMPONENT TO REMOVE THEREFROM PORTIONS OF SAID MIXTURE, OTHER THAN SAID COMPONENT GAS, WHICH HAVE BEEN UNAVOIDABLY ABSORBED DURING THE
Claim 2
Dependent Claim
114 words
THE REMOVAL OF A GAS FROM A MIXTURE OF GASES WHICH ARE NORMALLY GASEOUS WHICH COMPRISES LIQUEFYING SAID MIXTURE BY SUBJECTING SAID MIXTURE TO CONDITIONS OF TEMPERATURE AND PRESSURE WHICH WILL LIQUELY THE SAME AND CONTACTING THE SAID MIXTURE OF GASES AS A LIQUID WITH A SOLVENT ADAPTED UNDER THE CONDITIONS OF LIQUID-LIQUID CONTACT TO REMOVE FROM SAID MIXTURE A LIQUEFIED COMPONENT RECOVERING ON THE ONE HAND A STREAM FROM WHICH SAID COMPONENT HAS BEEN REMOVED AND ON THE OTHER HAND A SOLVENT RICH IN SAID REMOVED COMPONENT, FLASHING SAID SOLVENT RICH SAID REMOVED COMPONENT TO REMOVE THEREFROM PORTIONS OF SAID MIXTURE, OTHER THAN SAID COMPONENT GAS, WHICH HAVE BEEN UNAVOIDABLY ABSORBED DURING THE
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |