US3158557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation control
Assignee: Phillips Petroleum Co
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Filing: 1960-06-16
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Granted: 1964-11-24
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Expires: 1980-06-16
Abstract
No abstract record available.
Inventors
- 👤 Ernest D Tolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:50
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
IN A FRACTIONATION SYSTEM WHEREIN A FEED MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION COLUMN, A VAPOR STREAM IS REMOVED FROM THE TOP OF SAID COLUMN, SAID VAPOR STREAM IS COOLED TO CONDENSE AT LEAST A PART OF SAME, AND AT LEAST A PART OF THE RESULTING CONDENSATE IS RETURNED TO SAID COLUMN AS EXTERNAL REFLUX; A SYSTEM TO COMPUTE THE INTERNAL REFLUX IN SAID COLUMN COMPRISING FIRST MEANS TO ESTABLISH A FIRST ELECTRICAL SIGNAL REPRESENTATIVE OF THE RATE OF FLOW OF EXTERNAL REFLUX TO SAID COLUMN, SECOND MEANS TO ESTABLISH A SECOND ELECTRICAL SIGNAL REPRESENTATIVE OF THE TEMPERATURE DIFFERNCE BETWEEN SAID VAPOR STREAM AND SAID EXTERNAL REFLUX, THIRD MEANS RESPONSIVE TO SAID FIRST MEANS TO ESTABLISH A THIRD ELECTRICAL SIGNAL REPRESENTATIVE OF THE LOGARITHM OF SAID FIRST SIGNAL, FOURTH MEANS RESPONSIVE TO SAID SECOND MEANS TO INCREASE SAID SECOND SIGNAL BY A PRESELECTED AMOUNT AND THEN TO ESTABLISH A FOURTH ELECTRICAL SIGNAL REPRESENTATIVE OF THE LOGARITHM OF THE INCREASED SECOND SIGNAL, FIFTH MEANS RESPONSIVE TO SAID THIRD AND FOURTH MEANS TO ESTABLISH A FIFTH ELECTRICAL SIGNAL REPRESENTATIVE OF THE SUM OF SAID THIRD AND FOURTH SIGNALS, AND SIXTH MEANS RESPONSIVE TO SAID FIFTH MEANS TO ESTABLISH A SIXTH SIGNAL
Claim 2
Dependent Claim
204 words
IN A FRACTIONATION SYSTEM WHEREIN A FEED MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION COLUMN, A VAPOR STREAM IS REMOVED FROM THE TOP OF SAID COLUMN, SAID VAPOR STREAM IS COOLED TO CONDENSE AT LEAST A PART OF SAME, AND AT LEAST A PART OF THE RESULTING CONDENSATE IS RETURNED TO SAID COLUMN AS EXTERNAL REFLUX; A SYSTEM TO COMPUTE THE INTERNAL REFLUX IN SAID COLUMN COMPRISING FIRST MEANS TO ESTABLISH A FIRST ELECTRICAL SIGNAL REPRESENTATIVE OF THE RATE OF FLOW OF EXTERNAL REFLUX TO SAID COLUMN, SECOND MEANS TO ESTABLISH A SECOND ELECTRICAL SIGNAL REPRESENTATIVE OF THE TEMPERATURE DIFFERNCE BETWEEN SAID VAPOR STREAM AND SAID EXTERNAL REFLUX, THIRD MEANS RESPONSIVE TO SAID FIRST MEANS TO ESTABLISH A THIRD ELECTRICAL SIGNAL REPRESENTATIVE OF THE LOGARITHM OF SAID FIRST SIGNAL, FOURTH MEANS RESPONSIVE TO SAID SECOND MEANS TO INCREASE SAID SECOND SIGNAL BY A PRESELECTED AMOUNT AND THEN TO ESTABLISH A FOURTH ELECTRICAL SIGNAL REPRESENTATIVE OF THE LOGARITHM OF THE INCREASED SECOND SIGNAL, FIFTH MEANS RESPONSIVE TO SAID THIRD AND FOURTH MEANS TO ESTABLISH A FIFTH ELECTRICAL SIGNAL REPRESENTATIVE OF THE SUM OF SAID THIRD AND FOURTH SIGNALS, AND SIXTH MEANS RESPONSIVE TO SAID FIFTH MEANS TO ESTABLISH A SIXTH SIGNAL
References Cited (Backward Citations)
US3018229A
Cited
US3020213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |