US2881118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation column control
Assignee: Phillips Petroleum Co
•
Filing: 1953-12-30
•
Granted: 1959-04-07
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Spann
- 👤 Copenhaver William Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:33
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A FRACTIONATION SYSTEM COMPRISING A FRACTIONATION COLUMN MEANS TO SUPPLY A FEED MIXTURE TO BE SEPARATED TO SAID COLUMN. A REFLUX ACCUMULATOR. A CONDENSER, CONDUIT MEANS TO PASS OVERHEAD VAPORS FROM SAID COLUMN THROUGH SAID CONDENSER TO SAID ACCUMULATOR, MEANS TO MAINTAIN A PREDETERMINED PRESSURE IN SAID COLUMN, CONDUIT MEANS TO RETURN A PORTION OF RTHE CONDDENSED VAPORS FROM SAID ACCUMULATOR TO SAID COLUMN AS REFLUX, CONDUIT MEANS TO WITHDRAW A PORTION OF THE CONDENSED VAPORS FROM SAID ACCUMULATOR AS AN OVERHEAD PRODUCT STREAM, CONDUIT MEANS TO WITHDRAW A KETTLE PRODUCT FROM SAID CONDUIT MEANS TO SUPPLY HEAT TO THE LOWER REGION OF SAID COLUMN, MEANS TO MEASURE THE LIQUID LEVEL IN THE LOWER REGION OF SAID COLUMN, MEANS RESPONSIVE TO SAID MEANS TO MEASURE LIQUID LEVEL TO CONTROL THE RATE OF HEAT
Claim 2
Dependent Claim
133 words
A FRACTIONATION SYSTEM COMPRISING A FRACTIONATION COLUMN MEANS TO SUPPLY A FEED MIXTURE TO BE SEPARATED TO SAID COLUMN. A REFLUX ACCUMULATOR. A CONDENSER, CONDUIT MEANS TO PASS OVERHEAD VAPORS FROM SAID COLUMN THROUGH SAID CONDENSER TO SAID ACCUMULATOR, MEANS TO MAINTAIN A PREDETERMINED PRESSURE IN SAID COLUMN, CONDUIT MEANS TO RETURN A PORTION OF RTHE CONDDENSED VAPORS FROM SAID ACCUMULATOR TO SAID COLUMN AS REFLUX, CONDUIT MEANS TO WITHDRAW A PORTION OF THE CONDENSED VAPORS FROM SAID ACCUMULATOR AS AN OVERHEAD PRODUCT STREAM, CONDUIT MEANS TO WITHDRAW A KETTLE PRODUCT FROM SAID CONDUIT MEANS TO SUPPLY HEAT TO THE LOWER REGION OF SAID COLUMN, MEANS TO MEASURE THE LIQUID LEVEL IN THE LOWER REGION OF SAID COLUMN, MEANS RESPONSIVE TO SAID MEANS TO MEASURE LIQUID LEVEL TO CONTROL THE RATE OF HEAT
References Cited (Backward Citations)
US1471342A
Cited
US2180512A
Cited
US2357113A
Cited
US2455243A
Cited
US2459404A
Cited
US2529030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |