US2625502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax-oil separation
Assignee: Union Oil Company of California
•
Filing: 1948-07-24
•
Granted: 1953-01-13
•
Expires: 1968-07-24
Abstract
No abstract record available.
Inventors
- 👤 Backlund Peter Stanley
- 👤 Vance N Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:31
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
A METHOD OF CONVERTING A NORMALLY CRYSTALLINE PETROLEUM WAX WHICH HAS BEEN PRECIPITATED FROM AN OIL-AROMATIC SOLVENT SOLUTION IN AN UNFILTERABLE GELATINOUS FORM INTO A READILY FILTERABLE FORM, WITHOUT CHANGING THE TEMPERATURE, WHICH COMPRISES CONTACTING THE GELATINOUS WAX WITH AN AMOUNT BY VOLUME OF A WAX ANTI-SOLVENT AT LEAST AS GREAT AS ABOUT 1 PART PER 1.5 PARTS OF AROMATIC SOLVENT, SAID AROMATIC SOLVENT CONSISTING ESSENTIALLY OF AN AROMATIC HYDROCARBON.
Claim 2
Independent Claim
70 words
A METHOD OF CONVERTING A NORMALLY CRYSTALLINE PETROLEUM WAX WHICH HAS BEEN PRECIPITATED FROM AN OIL-AROMATIC SOLVENT SOLUTION IN AN UNFILTERABLE GELATINOUS FORM INTO A READILY FILTERABLE FORM, WITHOUT CHANGING THE TEMPERATURE, WHICH COMPRISES CONTACTING THE GELATINOUS WAX WITH AN AMOUNT BY VOLUME OF A WAX ANTI-SOLVENT AT LEAST AS GREAT AS ABOUT 1 PART PER 1.5 PARTS OF AROMATIC SOLVENT, SAID AROMATIC SOLVENT CONSISTING ESSENTIALLY OF AN AROMATIC HYDROCARBON.
Claim 3
Dependent Claim
72 words
A PROCESS FOR THE SEPARATION OF HIGH MELTING POINT WAX FROM A WAX-OIL MIXTURE CONTAINING BOTH HIGH MELTING POINT AND LOW MELTING POINT WAX WHICH COMPRISES BRINGING SAID WAX-OIL MIXTURE TO A STATE WHEREIN THE WAX PRESENT IS SUBSTANTIALLY COMPLETELY DISSOLVED IN THE OIL, ADDING TO THE WAX-OIL SOLUTION AN AROMATIC SOLVENT CONSISTING ESSENTIALLY OF AN AROMATIC HYDROCARBON FROM WHICH WAX SEPARATES ON COOLING IN AN UNFILTERABLE GELATINOUS FORM, COOLING SAID SOLVENT-
Claim 4
Dependent Claim
72 words
A PROCESS FOR THE SEPARATION OF HIGH MELTING POINT WAX FROM A WAX-OIL MIXTURE CONTAINING BOTH HIGH MELTING POINT AND LOW MELTING POINT WAX WHICH COMPRISES BRINGING SAID WAX-OIL MIXTURE TO A STATE WHEREIN THE WAX PRESENT IS SUBSTANTIALLY COMPLETELY DISSOLVED IN THE OIL, ADDING TO THE WAX-OIL SOLUTION AN AROMATIC SOLVENT CONSISTING ESSENTIALLY OF AN AROMATIC HYDROCARBON FROM WHICH WAX SEPARATES ON COOLING IN AN UNFILTERABLE GELATINOUS FORM, COOLING SAID SOLVENT-
References Cited (Backward Citations)
US2049059A
Cited
US2067050A
Cited
US2223939A
Cited
US2229658A
Cited
US2463845A
Cited
US2486014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |