US2521357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deasphalting petroleum oils with porous contact material
Assignee: ExxonMobil Oil Corp
•
Filing: 1948-03-13
•
Granted: 1950-09-05
•
Expires: 1968-03-13
Abstract
No abstract record available.
Inventors
- 👤 Richard J Furnoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:54
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/08; C10G73/00; C10G73/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR DEASPHALTING AN ASPHALT-BEARING PETROLEUM STOCK, WHICH COMPRISES CONTACTING SAID STOCK WITH A POROUS PARTICLE-FORM INORGANIC OXIDE GEL TYPE CONTACT MATERIAL IN WHICH MOST OF THE PORES ARE-MICROPORES AND THE VOLUME OF PORES HAVING RATII GREATER THAN ABOUT 100 ANGSTROM UNITS IS LESS THAN ABOUT 30 PER CENT OF THE TOTAL PORE VOLUME AND IN WHICH THE PARTICLES ARE GREATER THAN ABOUT 30 MESH SIZE TO EFFECT SORPTION OF THE ONLY CONSTITUENTS INTO THE PRESS OF SAID CONTACT MATERIAL WHILE ASPHALTIC CONSTITUENTS REMAIN UNSORBED, THEREAFTER SEPARATING SAID CONTACT MATERIAL FROM SAID UNSORBED ASPHATIC CONSTITUENTS, SELECTIVELY EXTRACTING SAID CONTACT MATERIAL WITH A PARAFFINIC SOLVENT TO REMOVE THEREFROM A DEASPHALTED PRODUCT CHARACTERIZED BY A LOW CARBON RESIDUE CONTENT, AND THEREAFTER EXTRACTING THE REMAINDER OF SORBED OILY CONSTITUENTS WITH A POLAR SOLVENT THEREFOR.
Claim 2
Dependent Claim
132 words
A PROCESS FOR DEASPHALTING AN ASPHALT-BEARING PETROLEUM STOCK, WHICH COMPRISES CONTACTING SAID STOCK WITH A POROUS PARTICLE-FORM INORGANIC OXIDE GEL TYPE CONTACT MATERIAL IN WHICH MOST OF THE PORES ARE-MICROPORES AND THE VOLUME OF PORES HAVING RATII GREATER THAN ABOUT 100 ANGSTROM UNITS IS LESS THAN ABOUT 30 PER CENT OF THE TOTAL PORE VOLUME AND IN WHICH THE PARTICLES ARE GREATER THAN ABOUT 30 MESH SIZE TO EFFECT SORPTION OF THE ONLY CONSTITUENTS INTO THE PRESS OF SAID CONTACT MATERIAL WHILE ASPHALTIC CONSTITUENTS REMAIN UNSORBED, THEREAFTER SEPARATING SAID CONTACT MATERIAL FROM SAID UNSORBED ASPHATIC CONSTITUENTS, SELECTIVELY EXTRACTING SAID CONTACT MATERIAL WITH A PARAFFINIC SOLVENT TO REMOVE THEREFROM A DEASPHALTED PRODUCT CHARACTERIZED BY A LOW CARBON RESIDUE CONTENT, AND THEREAFTER EXTRACTING THE REMAINDER OF SORBED OILY CONSTITUENTS WITH A POLAR SOLVENT THEREFOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |