US3297566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas oil reflux controller
Assignee: Phillips Petroleum Co
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Filing: 1964-10-01
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Granted: 1967-01-10
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Golden A Moyer
- 👤 John T Cabbage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:59
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4266; C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
IN A FRACTIONATION PROCESS WHEREIN A FIRST SIDE STREAM IS DRAWN OFF AT A VARIABLE RATE FOR A PRODUCT AND LIQUID IS MAINTAINED ON FRACTIONATION TRAYS BETWEEN THE LOCUS OF SAID PRODUCT REMOVAL AND THE LOCUS OF FEED ENTRY INTO A FRACTIONATOR, THE LOCUS OF SAID PRODUCT REMOVAL BEING ABOVE THE LOCUS OF SAID FEED ENTRY, THE IMPROVEMENT WHICH COMPRISES REMOVING A SECOND STREAM FROM A FRACTIONATOR TRAY IN SAID LOCUS OF FEED ENTRY, PASSING AT LEAST A PORTION OF SAID SECOND STREAM TO A SEPARATOR WHEREIN VAPORS ARE SEPARATED FROM LIQUID, MAINTAINING A LIQUID LEVEL IN SAID SEPARATOR, PASSING LIQUID IN SAID SEPARATOR AT A FIXED RATE FROM SAID SEPARATOR BACK INTO SAID FRACTIONATOR, AND CONTROLLING THE RATE AT WHICH SAID FIRST SIDE STREAM IS DRAWN OFF RESPONSIVE TO THE LIQUID LEVEL IN SAID SEPARATOR TO MAINTAIN A MAXIMUM AMOUNT OF PRODUCT WITHDRAWAL THROUGH SAID FIRST SIDE STREAM WHILE MAINTAINING A CONTROLLED AMOUNT OF LIQUID IN THE FRACTIONATOR BETWEEN THE LOCUS OF FEED ENTRY AND THE LOCUS OF PRODUCT REMOVAL.
Claim 2
Dependent Claim
171 words
IN A FRACTIONATION PROCESS WHEREIN A FIRST SIDE STREAM IS DRAWN OFF AT A VARIABLE RATE FOR A PRODUCT AND LIQUID IS MAINTAINED ON FRACTIONATION TRAYS BETWEEN THE LOCUS OF SAID PRODUCT REMOVAL AND THE LOCUS OF FEED ENTRY INTO A FRACTIONATOR, THE LOCUS OF SAID PRODUCT REMOVAL BEING ABOVE THE LOCUS OF SAID FEED ENTRY, THE IMPROVEMENT WHICH COMPRISES REMOVING A SECOND STREAM FROM A FRACTIONATOR TRAY IN SAID LOCUS OF FEED ENTRY, PASSING AT LEAST A PORTION OF SAID SECOND STREAM TO A SEPARATOR WHEREIN VAPORS ARE SEPARATED FROM LIQUID, MAINTAINING A LIQUID LEVEL IN SAID SEPARATOR, PASSING LIQUID IN SAID SEPARATOR AT A FIXED RATE FROM SAID SEPARATOR BACK INTO SAID FRACTIONATOR, AND CONTROLLING THE RATE AT WHICH SAID FIRST SIDE STREAM IS DRAWN OFF RESPONSIVE TO THE LIQUID LEVEL IN SAID SEPARATOR TO MAINTAIN A MAXIMUM AMOUNT OF PRODUCT WITHDRAWAL THROUGH SAID FIRST SIDE STREAM WHILE MAINTAINING A CONTROLLED AMOUNT OF LIQUID IN THE FRACTIONATOR BETWEEN THE LOCUS OF FEED ENTRY AND THE LOCUS OF PRODUCT REMOVAL.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |