US2692222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination, deasphalting, phenol treating, and dewaxing process
Assignee: Standard Oil Development Co
•
Filing: 1950-10-27
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Granted: 1954-10-19
•
Expires: 1970-10-27
Abstract
No abstract record available.
Inventors
- 👤 John W Packie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:12
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/003; C09; C09B; C09B33/00; C09B33/02; C09B33/12; C10G21/02; C10G21/04; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
PROCESS FOR THE PRODUCTION OF A HIGH QUALITY LUBRICATING OIL FROM A DISTILLATE HYDROCARBON OIL AND A HIGHER BOILING RESIDUUM OIL SECURED FROM A DISTILLATION OPERATION AND CONTAINING ASPHALTIC CONSTITUENTS WHICH COMPRISES INTRODUCING THE DISTILLATE OIL INTO THE CENTER AREA OF A LIQUIDLIQUID EXTRACTION-TREATER ZONE, INTRODUCING THE RESIDUUM OIL INTO THE EXTRACTION-TREATER ZONE BELOW THE POINT OF INTRODUCTION OF THE DISTILLATE OIL, INTRODUCING A SOLVENT HAVING A PERFERENTIAL SELECTIVITY FOR AROMATIC TYPE CONSTITUENTS AS COMPARED TO PARAFFINIC TYPE CONSTITUENTS INTO THE UPPER AREA OF SAID EXTRACTION-TREATER ZONE, INTRODUCING A DEASPHALTING SOLVENT INTO THE LOWER AREA OF SAID EXTRACTION-TREATER ZONE BELOW THE POINT OF INTRODUCTION OF SAID RESIDUUM OIL, WITHDRAWING A SOLVENT EXTRACT PHASE FROM THE BOTTOM OF SAID EXTRACTION-TREATER ZONE AND SEPARATING AS-
Claim 2
Dependent Claim
123 words
PROCESS FOR THE PRODUCTION OF A HIGH QUALITY LUBRICATING OIL FROM A DISTILLATE HYDROCARBON OIL AND A HIGHER BOILING RESIDUUM OIL SECURED FROM A DISTILLATION OPERATION AND CONTAINING ASPHALTIC CONSTITUENTS WHICH COMPRISES INTRODUCING THE DISTILLATE OIL INTO THE CENTER AREA OF A LIQUIDLIQUID EXTRACTION-TREATER ZONE, INTRODUCING THE RESIDUUM OIL INTO THE EXTRACTION-TREATER ZONE BELOW THE POINT OF INTRODUCTION OF THE DISTILLATE OIL, INTRODUCING A SOLVENT HAVING A PERFERENTIAL SELECTIVITY FOR AROMATIC TYPE CONSTITUENTS AS COMPARED TO PARAFFINIC TYPE CONSTITUENTS INTO THE UPPER AREA OF SAID EXTRACTION-TREATER ZONE, INTRODUCING A DEASPHALTING SOLVENT INTO THE LOWER AREA OF SAID EXTRACTION-TREATER ZONE BELOW THE POINT OF INTRODUCTION OF SAID RESIDUUM OIL, WITHDRAWING A SOLVENT EXTRACT PHASE FROM THE BOTTOM OF SAID EXTRACTION-TREATER ZONE AND SEPARATING AS-
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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) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |