US3018229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal reflux computer for fractionation control
Assignee: Phillips Petroleum Co
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Filing: 1959-03-04
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Granted: 1962-01-23
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Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Lyman W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:36
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
IN A FRACTIONATION PROCESS WHEREIN A FEED MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION ZONE, A VAPOR STREAM IS REMOVED FROM THE TOP OF SAID ZONE, 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 FRACTIONATION ZONE AS EXTERNAL REFLUX; A CONTROL METHOD WHICH COMPRISES THE STEPS OF MEASURING THE RATE OF FLOW OF SAID EXTERNAL REFLUX AND ESTABLISHING A FIRST SIGNAL RE REPRESENTATIVE THEREOF, MEASURING THE TEMPERATURE DIFFERENCE BETWEEN SAID VAPOR STREAM AND SAID EXTERNAL REFLUX AND ESTABLISHING A SECOND SIGNAL $T REPRESENTATIVE THEREOF, COMBINING SAID FIRST AND SECOND SIGNALS SO AS TO ESTABLISH A THIRD SIGNAL R1 WHICH IS EQUAL TO THE QUANTITY:
References Cited (Backward Citations)
US1735470A
Cited
US2580651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |