US2527404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the propane fractionation of lubricating oil stocks
Assignee: Phillips Petroleum Co
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Filing: 1949-11-07
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Granted: 1950-10-24
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Expires: 1969-11-07
Abstract
No abstract record available.
Inventors
- 👤 Vault Albert N De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
321 words
A PROCESS FOR THE FRACTIONATION OF ASPHALTCONTAINING LUBRICATING OIL STOCKS COMPRISING MAINTAINING A BODY OF PROPANE RICH IN DISSOLVED OIL IN A FIRST TREATING ZONE AND A BODY OF ASPHALTIC MATERIAL CONTAINING DISSOLVED PROPANE BELOW SAID BODY OF PROPANE RICH IN DISSOLVED OIL IN SAID ZONE, SAID BODIES MEETING AT A COMMON INTERFACE, INTRODUCING PROPANE AND SAID ASPHALT-CONTAINING LUBRICATING OIL STOCK INTO SAID ZONE, REMOVING SAID ASPHALTIC MATERIAL CONTAINING DISSOLVED PROPANE FROM SAID ZONE; MAINTAINING A BODY OF PROPANE LEAN IN DISSOLVED OIL IN A SECOND ZONE AT A TEMPERATURE ABOVE THAT MAINTAINED IN SAID FIRST ZONE AND A BODY OF AN OIL-RICH PHASE CONTAINING PROPANE BELOW SAID BODY OF PROPANE LEAN IN DISSOLVED OIL IN SAID SECOND ZONE AT SAID TEMPERATURE, SAID BODIES IN SAID SECOND ZONE MEETING AT A COMMON INTERFACE, REMOVING PROPANE RICH IN DISSOLVED OIL FROM SAID FIRST ZONE, AND HEATING THIS LATTER REMOVED MATERIAL AND INTRODUCING SAME INTO SAID SECOND ZONE; MAINTAINING A BODY OF PROPANE CONTAINING DISSOLVED OIL IN A THIRD ZONE AND A BODY OF AN OILRICH PHASE BELOW SAID BODY OF PROPANE CONTAINING DISSOLVED OIL IN SAID THIRD ZONE AT A TEMPERATURE BELOW SAID TEMPERATURE MAINTAINED IN SAID SECOND ZONE, SAID BODIES IN SAID THIRD ZONE MEETING AT A COMMON INTERFACE, REMOVING PROPANE LEAN IN DISSOLVED OIL FROM SAID SECOND ZONE, COOLING THIS LATTER REMOVED MATERIAL AND INTRODUCING THIS REMOVED AND COOLED MATERIAL INTO SAID THIRD ZONE AT A POINT NEAR SAID INTERFACE, REMOVING OIL-RICH PHASE FROM SAID SECOND ZONE AND COOLING THIS LATTER REMOVED MATERIAL AND INTRODUCING THIS COOLED MATERIAL INTO THE BODY OF PROPANE CONTAINING DISSOLVED OIL IN SAID THIRD ZONE AT A POINT ABOVE THE POINT OF INTRODUCTION OF SAID PROPANE LEAN IN DISSOLVED OIL, REMOVING OIL-RICH PHASE AND PROPANE CONTAINING DISSOLVED OIL FROM SAID THIRD ZONE, AND RECOVERING OIL FROM THIS LATTER REMOVED OIL-RICH PHASE AND OIL FROM THIS LATTER PROPANE CONTAINING DISSOLVED OIL AS PRODUCTS OF THE PROCESS.
Claim 2
Dependent Claim
321 words
A PROCESS FOR THE FRACTIONATION OF ASPHALTCONTAINING LUBRICATING OIL STOCKS COMPRISING MAINTAINING A BODY OF PROPANE RICH IN DISSOLVED OIL IN A FIRST TREATING ZONE AND A BODY OF ASPHALTIC MATERIAL CONTAINING DISSOLVED PROPANE BELOW SAID BODY OF PROPANE RICH IN DISSOLVED OIL IN SAID ZONE, SAID BODIES MEETING AT A COMMON INTERFACE, INTRODUCING PROPANE AND SAID ASPHALT-CONTAINING LUBRICATING OIL STOCK INTO SAID ZONE, REMOVING SAID ASPHALTIC MATERIAL CONTAINING DISSOLVED PROPANE FROM SAID ZONE; MAINTAINING A BODY OF PROPANE LEAN IN DISSOLVED OIL IN A SECOND ZONE AT A TEMPERATURE ABOVE THAT MAINTAINED IN SAID FIRST ZONE AND A BODY OF AN OIL-RICH PHASE CONTAINING PROPANE BELOW SAID BODY OF PROPANE LEAN IN DISSOLVED OIL IN SAID SECOND ZONE AT SAID TEMPERATURE, SAID BODIES IN SAID SECOND ZONE MEETING AT A COMMON INTERFACE, REMOVING PROPANE RICH IN DISSOLVED OIL FROM SAID FIRST ZONE, AND HEATING THIS LATTER REMOVED MATERIAL AND INTRODUCING SAME INTO SAID SECOND ZONE; MAINTAINING A BODY OF PROPANE CONTAINING DISSOLVED OIL IN A THIRD ZONE AND A BODY OF AN OILRICH PHASE BELOW SAID BODY OF PROPANE CONTAINING DISSOLVED OIL IN SAID THIRD ZONE AT A TEMPERATURE BELOW SAID TEMPERATURE MAINTAINED IN SAID SECOND ZONE, SAID BODIES IN SAID THIRD ZONE MEETING AT A COMMON INTERFACE, REMOVING PROPANE LEAN IN DISSOLVED OIL FROM SAID SECOND ZONE, COOLING THIS LATTER REMOVED MATERIAL AND INTRODUCING THIS REMOVED AND COOLED MATERIAL INTO SAID THIRD ZONE AT A POINT NEAR SAID INTERFACE, REMOVING OIL-RICH PHASE FROM SAID SECOND ZONE AND COOLING THIS LATTER REMOVED MATERIAL AND INTRODUCING THIS COOLED MATERIAL INTO THE BODY OF PROPANE CONTAINING DISSOLVED OIL IN SAID THIRD ZONE AT A POINT ABOVE THE POINT OF INTRODUCTION OF SAID PROPANE LEAN IN DISSOLVED OIL, REMOVING OIL-RICH PHASE AND PROPANE CONTAINING DISSOLVED OIL FROM SAID THIRD ZONE, AND RECOVERING OIL FROM THIS LATTER REMOVED OIL-RICH PHASE AND OIL FROM THIS LATTER PROPANE CONTAINING DISSOLVED OIL AS PRODUCTS OF THE PROCESS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |