US3257773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of gas for recovery of helium therefrom
Assignee: Phillips Petroleum Co
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Filing: 1963-04-29
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Granted: 1966-06-28
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 James S Connors
- 👤 Orin R Currie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:11
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN THE METHOD OF DEHYDRATING A WATER-CONTAINING GAS BY PASSING A STREAM OF SAID GAS CYCLICALLY THROUGH A DESICCANT-CONTAINING ZONE FOLLOWED BY REGENERATING AND COOLING THE DESICCANT IN SAID ZONE, THE IMPROVEMENT COMPRISING DIVIDING SAID STREAM OF GAS INTO SEPARATE PORTIONS; STARTING ONE OF SAID PORTIONS THROUGH ONE AND ONLY ONE OF A PLURALITY OF DESICCANT-CONTAINING ZONES IN PARALLEL WITH A SECOND DESICCANT-CONTAINING ZONE WHEN SAID SECOND ZONE IS ABOUT ONE HALF THROUGH ITS DEHYDRATING CYCLE OF ANOTHER OF SAID PORTIONS, SAID SECOND ZONE BEING THE ONLY ZONE TO RECEIVE SAID ANOTHER OF SAID PORTIONS; AND COMBINING THE EFFLUENT GAS FROM BOTH DESICCANT-CONTAINING ZONES AS THE DRY PRODUCT SO THAT THE PRODUCT GAS IS DERIVED FROM A DESICCANT-CONTAINING ZONE IN THE FIRST HALF OF ITS CYCLE AND A DESICCANT-CONTAINING ZONE IN THE LAST HALF OF ITS CYCLE.
Claim 2
Dependent Claim
137 words
IN THE METHOD OF DEHYDRATING A WATER-CONTAINING GAS BY PASSING A STREAM OF SAID GAS CYCLICALLY THROUGH A DESICCANT-CONTAINING ZONE FOLLOWED BY REGENERATING AND COOLING THE DESICCANT IN SAID ZONE, THE IMPROVEMENT COMPRISING DIVIDING SAID STREAM OF GAS INTO SEPARATE PORTIONS; STARTING ONE OF SAID PORTIONS THROUGH ONE AND ONLY ONE OF A PLURALITY OF DESICCANT-CONTAINING ZONES IN PARALLEL WITH A SECOND DESICCANT-CONTAINING ZONE WHEN SAID SECOND ZONE IS ABOUT ONE HALF THROUGH ITS DEHYDRATING CYCLE OF ANOTHER OF SAID PORTIONS, SAID SECOND ZONE BEING THE ONLY ZONE TO RECEIVE SAID ANOTHER OF SAID PORTIONS; AND COMBINING THE EFFLUENT GAS FROM BOTH DESICCANT-CONTAINING ZONES AS THE DRY PRODUCT SO THAT THE PRODUCT GAS IS DERIVED FROM A DESICCANT-CONTAINING ZONE IN THE FIRST HALF OF ITS CYCLE AND A DESICCANT-CONTAINING ZONE IN THE LAST HALF OF ITS CYCLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |