US3106462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of gases by absorption
Assignee: Phillips Petroleum Co
•
Filing: 1958-09-12
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Granted: 1963-10-08
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Expires: 1978-09-12
Abstract
No abstract record available.
Inventors
- 👤 John E Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:20
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD FOR THE PURIFICATION OF A GAS TO REMOVE A CONTAMINANT COMPONENT THEREFROM WHICH COMPRISES PASSING SAID GAS UPWARDLY INTO COUNTER-CURRENT CONTACT WITH DOWNWARDLY FLOWING SOLVENT EFFECTIVE TO REMOVE SAID CONTAMINANT FROM SAID GAS, REMOVING FROM THE BOTTOM OF SAID ABSORPTION ZONE A SOLVENT RICH IN SAID CONTAMINANT, REMOVING FROM THE TOP OF SAID ZONE PURIFIED GAS, CONDENSING AND RETURNING A PORTION OF SAID PURIFIED GAS TO SAID ZONE AS A LIQUID AT A POINT ABOVE THE ENTRY OF SAID SOLVENT, SENSING CHANGE IN THE BREAK POINT IN THE TEMPERATURE GRADIENT IN SAID ZONE AND CONTROLLING THE RATE OF RETURN OF SAID LIQUID TO THE ABSORPTION ZONE RESPONSIVE TO SAID CHANGE OF THE BREAKPOINT IN SAID TEMPERATURE IN SAID ZONE.
Claim 2
Independent Claim
121 words
A METHOD FOR THE PURIFICATION OF A GAS TO REMOVE A CONTAMINANT COMPONENT THEREFROM WHICH COMPRISES PASSING SAID GAS UPWARDLY INTO COUNTER-CURRENT CONTACT WITH DOWNWARDLY FLOWING SOLVENT EFFECTIVE TO REMOVE SAID CONTAMINANT FROM SAID GAS, REMOVING FROM THE BOTTOM OF SAID ABSORPTION ZONE A SOLVENT RICH IN SAID CONTAMINANT, REMOVING FROM THE TOP OF SAID ZONE PURIFIED GAS, CONDENSING AND RETURNING A PORTION OF SAID PURIFIED GAS TO SAID ZONE AS A LIQUID AT A POINT ABOVE THE ENTRY OF SAID SOLVENT, SENSING CHANGE IN THE BREAK POINT IN THE TEMPERATURE GRADIENT IN SAID ZONE AND CONTROLLING THE RATE OF RETURN OF SAID LIQUID TO THE ABSORPTION ZONE RESPONSIVE TO SAID CHANGE OF THE BREAKPOINT IN SAID TEMPERATURE IN SAID ZONE.
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |