Patent US3018230A successfully refreshed from Google Patents.
US3018230A
Expired / Lapsed
US
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Fractionator control system
Assignee: Phillips Petroleum Co
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Filing: 1959-07-13
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Granted: 1962-01-23
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Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Lyman W Morgan
- 👤 Lawrence R Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:55
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4227; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A PROCESS FOR CONTROLLING A FRACTIONATION PROCESS WHEREIN A DIFFERENTIAL MEASUREMENT IS MADE OF AN OPERATING VARIABLE AT TWO REGIONS OF THE PROCESS AND THE PROCESS IS REGULATED IN RESPONSE TO THE MEASUREMENT; THE IMPROVEMENT COMPRISING REGULATING THE PROCESS IN RESPONSE TO THE DIFFERENTIAL MEASUREMENT AS LONG AS THE VARIABLE AT EACH OF SAID REGIONS REMAINS WITHIN RESPECTIVE PRESELECTED RANGES, DISCONTINUING THE STEP OF REGULATING IN RESPONSE TO THE DIFFERENTIAL MEASUREMENT WHEN THE VARIABLE AT ONE OF SAID REGIONS EXCEEDS ITS RANGE, AND THEREAFTER REGULATING THE PROCESS IN RESPONSE TO THE VARIABLE WHICH HAS EXCEEDED ITS RANGE.
Claim 2
Dependent Claim
98 words
IN A PROCESS FOR CONTROLLING A FRACTIONATION PROCESS WHEREIN A DIFFERENTIAL MEASUREMENT IS MADE OF AN OPERATING VARIABLE AT TWO REGIONS OF THE PROCESS AND THE PROCESS IS REGULATED IN RESPONSE TO THE MEASUREMENT; THE IMPROVEMENT COMPRISING REGULATING THE PROCESS IN RESPONSE TO THE DIFFERENTIAL MEASUREMENT AS LONG AS THE VARIABLE AT EACH OF SAID REGIONS REMAINS WITHIN RESPECTIVE PRESELECTED RANGES, DISCONTINUING THE STEP OF REGULATING IN RESPONSE TO THE DIFFERENTIAL MEASUREMENT WHEN THE VARIABLE AT ONE OF SAID REGIONS EXCEEDS ITS RANGE, AND THEREAFTER REGULATING THE PROCESS IN RESPONSE TO THE VARIABLE WHICH HAS EXCEEDED ITS RANGE.
References Cited (Backward Citations)
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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) | 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 |