Patent US2917437A successfully refreshed from Google Patents.
US2917437A
Expired / Lapsed
US
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Fluid separation process control
Assignee: Phillips Petroleum Co
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Filing: 1957-06-10
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Granted: 1959-12-15
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Expires: 1977-06-10
Abstract
No abstract record available.
Inventors
- 👤 Louis D Kleiss
- 👤 Lyman W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:58
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4255
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
IN A FRACTIONATION SYSTEM INCLUDING A FRACTIONATION COLUMN, MEANS TO INTRODUCE A FLUID MIXTURE TO BE SEPARATED INTO SAID COLUMN, MEANS TO WITHDRAW AN OVERHEAD STREAM FROM SAID COLUMN, MEANS TO WITHDRAW A KETTLE STREAM FROM SAID COLUMN, AND MEANS TO INTRODUCE A SOLVENT INTO SAID COLUNM; A CONTROL SYSTEM COMPRISING MEANS TO SUPPLY HEAT TO THE LOWER REGION OF SAID COLUMN, MEANS TO CONTROL THE RATE OF HEAT SUPPLY, MEANS TO DETECT THE TEMPERATURE IN A LOWER REGION OF SAID COLUMN, MEANS RESPONSIVE TO SAID MEANS TO DETECT TEMPERATURE TO RESET SAID MEANS TO CONTROL THE RATE OF HEAT SUPPLY THEREBY TO CONTROL THE TEMPERATURE AT SAID LOWER REGION, MEANS TO WITHDRAW A SAMPLE STREAM FROM SAID COLUMN AT A SECOND REGION ABOVE SAID LOWER REGION, MEANS TO ANALYZE SAID SAMPLE STREAM, AND MEANS RESPONSIVE TO SAID MEANS TO ANALYZE TO FURTHER RESET SAID MEANS TO CONTROL THE RATE OF HEAT SUPPLY WHEREBY THE CONCENTRATION OF A CONSITUENT OF THE FLUID MIXTURE TO BE SEPARATED TO MAINTAINED SUBSTANTIALLY CONSTANT AT SAID SECOND REGION.
Claim 2
Dependent Claim
174 words
IN A FRACTIONATION SYSTEM INCLUDING A FRACTIONATION COLUMN, MEANS TO INTRODUCE A FLUID MIXTURE TO BE SEPARATED INTO SAID COLUMN, MEANS TO WITHDRAW AN OVERHEAD STREAM FROM SAID COLUMN, MEANS TO WITHDRAW A KETTLE STREAM FROM SAID COLUMN, AND MEANS TO INTRODUCE A SOLVENT INTO SAID COLUNM; A CONTROL SYSTEM COMPRISING MEANS TO SUPPLY HEAT TO THE LOWER REGION OF SAID COLUMN, MEANS TO CONTROL THE RATE OF HEAT SUPPLY, MEANS TO DETECT THE TEMPERATURE IN A LOWER REGION OF SAID COLUMN, MEANS RESPONSIVE TO SAID MEANS TO DETECT TEMPERATURE TO RESET SAID MEANS TO CONTROL THE RATE OF HEAT SUPPLY THEREBY TO CONTROL THE TEMPERATURE AT SAID LOWER REGION, MEANS TO WITHDRAW A SAMPLE STREAM FROM SAID COLUMN AT A SECOND REGION ABOVE SAID LOWER REGION, MEANS TO ANALYZE SAID SAMPLE STREAM, AND MEANS RESPONSIVE TO SAID MEANS TO ANALYZE TO FURTHER RESET SAID MEANS TO CONTROL THE RATE OF HEAT SUPPLY WHEREBY THE CONCENTRATION OF A CONSITUENT OF THE FLUID MIXTURE TO BE SEPARATED TO MAINTAINED SUBSTANTIALLY CONSTANT AT SAID SECOND REGION.
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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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |