US2846361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltite treating
Assignee: Lummus Technology LLC
•
Filing: 1953-09-01
•
Granted: 1958-08-05
•
Expires: 1973-09-01
Abstract
No abstract record available.
Inventors
- 👤 Mekler Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:40
CPC Classifications
C; C10; C10B; C10B55/00; C10C; C10C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF TREATING SOLID GILSONITE, WHICH COMPRISES INTRODUCING GROUND GILSONITE INTO A MELTING TANK CONTAINING A HOT HYDROCARBON LIQUID CARRIER BOILING IN THE RANGE OF BETWEEN 350*F. AND 600*F. AND MAINTAINED AT A TEMPERATURE SUFFICIENT TO MELT THE GILSONITE INTRODUCED THEREIN WITHOUT EXOTHERMIC REACTION THEREOF, MIXING THE MELTED GILSONITE AND LIQUID CARRIER TO FORM A PUMPABLE SLURRY, INTRODUCING THE SLURRY INTO A HEATER WHEREIN THE SLURRY IS HEATED TO A TEMPERATURE OF APPROXIMATELY 500*F. AND SUFFICIENT TO SUBSTANTIALLY REMOVE UNDESIRABLE GASEOUS CONSTITUENTS FROM THE GILSONITE AND STABILIZE THE SAME, CONTROLLING THE HEATING OPERATION TO AVOID COKING OF THE GILSONITE, PASSING THE HEATER EFFLUENT TO A DISTILLATION COLUMN, WITHDRAWING AN OVERHEAD PRODUCT FROM SAID DISTILLATION COLUMN COMPRISING THE UNDESIRABLE GASEOUS CONSTITUENTS AND LIQUID CARRIER, CONDENSING THE LIQUID CARRIER COMPONENT OF SAID OVERHEAD, SEPARATING CONDENSED LIQUID CARRIER AND THE UNCONDENSED GASEOUS
Claim 2
Independent Claim
140 words
THE METHOD OF TREATING SOLID GILSONITE, WHICH COMPRISES INTRODUCING GROUND GILSONITE INTO A MELTING TANK CONTAINING A HOT HYDROCARBON LIQUID CARRIER BOILING IN THE RANGE OF BETWEEN 350*F. AND 600*F. AND MAINTAINED AT A TEMPERATURE SUFFICIENT TO MELT THE GILSONITE INTRODUCED THEREIN WITHOUT EXOTHERMIC REACTION THEREOF, MIXING THE MELTED GILSONITE AND LIQUID CARRIER TO FORM A PUMPABLE SLURRY, INTRODUCING THE SLURRY INTO A HEATER WHEREIN THE SLURRY IS HEATED TO A TEMPERATURE OF APPROXIMATELY 500*F. AND SUFFICIENT TO SUBSTANTIALLY REMOVE UNDESIRABLE GASEOUS CONSTITUENTS FROM THE GILSONITE AND STABILIZE THE SAME, CONTROLLING THE HEATING OPERATION TO AVOID COKING OF THE GILSONITE, PASSING THE HEATER EFFLUENT TO A DISTILLATION COLUMN, WITHDRAWING AN OVERHEAD PRODUCT FROM SAID DISTILLATION COLUMN COMPRISING THE UNDESIRABLE GASEOUS CONSTITUENTS AND LIQUID CARRIER, CONDENSING THE LIQUID CARRIER COMPONENT OF SAID OVERHEAD, SEPARATING CONDENSED LIQUID CARRIER AND THE UNCONDENSED GASEOUS
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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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |