US3158556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation control
Assignee: Phillips Petroleum Co
•
Filing: 1959-09-24
•
Granted: 1964-11-24
•
Expires: 1979-09-24
Abstract
No abstract record available.
Inventors
- 👤 Edward E Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:34
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A FRACTIONATION SYSTEM WHEREIN A FLUID MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION COLUMN, A VAPOR STREAM IS REMOVED FROM 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 THE COLUMN AS EXTERNAL REFLUX, A CONTROL SYSTEM COMPRISING MEANS TO ESTABLISH A FIRST SIGNAL REPRESENTATIVE OF THE FLOW OF EXTERNAL REFLUX TO SAID COLUMN, A THERMOCOUPLE POSITIONED TO ESTABLISH A SECOND SIGNAL REPRESENTATIVE OF THE TEMPERATURE OF SAID EXTERNAL REFLUX, AN ADJUSTABLE VOLTAGE SOURCE FOR ESTABLISHING A THIRD SIGNAL REPRESENTATIVE OF A PREDETERMINED DESIRED FIXED REFERENCE TEMPERATURE WHICH APPROXIMATES THE BUBBLE POINT TEMPERATURE OF THE EXTERNAL REFLUX AT THE PRESSURE WITHIN SAID COLUMN, MEANS RESPONSIVE TO SAID SECOND AND THIRD SIGNALS TO ESTABLISH A FOURTH SIGNAL
Claim 2
Dependent Claim
139 words
IN A FRACTIONATION SYSTEM WHEREIN A FLUID MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION COLUMN, A VAPOR STREAM IS REMOVED FROM 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 THE COLUMN AS EXTERNAL REFLUX, A CONTROL SYSTEM COMPRISING MEANS TO ESTABLISH A FIRST SIGNAL REPRESENTATIVE OF THE FLOW OF EXTERNAL REFLUX TO SAID COLUMN, A THERMOCOUPLE POSITIONED TO ESTABLISH A SECOND SIGNAL REPRESENTATIVE OF THE TEMPERATURE OF SAID EXTERNAL REFLUX, AN ADJUSTABLE VOLTAGE SOURCE FOR ESTABLISHING A THIRD SIGNAL REPRESENTATIVE OF A PREDETERMINED DESIRED FIXED REFERENCE TEMPERATURE WHICH APPROXIMATES THE BUBBLE POINT TEMPERATURE OF THE EXTERNAL REFLUX AT THE PRESSURE WITHIN SAID COLUMN, MEANS RESPONSIVE TO SAID SECOND AND THIRD SIGNALS TO ESTABLISH A FOURTH SIGNAL
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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) | 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 |