US2961397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing deposition of wax on equipment during dewaxing by utilizing smooth surface equipment and a surface-active agent
Assignee: Sunoco Inc
•
Filing: 1955-12-21
•
Granted: 1960-11-22
•
Expires: 1975-12-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Moscrip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:15
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
PROCESS FOR SEPARATING WAX FROM OIL WHICH COMPRISES: COOLING A HOMOGENEOUS LIQUID MATERIAL, WHICH REMAINS HOMOGENEOUS AFTER COOLING COMPRISING MAINLY A SOLUTION OF PETROLEUM OIL AND WAX IN A SOLVENT FOR PETROLEUM OIL AND CONTAINING 0.01 TO 10 WEIGHT PERCENT OF A SURFACE ACTIVE AGENT HAVING AN OLEOPHILIC PORTION AND A POLAR PORTION IN THE MOLECULE AND ADAPTED TO FORM A FILM ON SURFACES OF EQUIPMENT WITH WHICH THE LIQUID MATERIAL IS CONTACTED, THEREBY TO FORM SOLID WAX IN SAID LIQUID MATERIAL, SEPARATING SAID SOLID WAX FROM EXCESS LIQUID, AND PRIOR TO SAID SEPARATING, CONTACTING SAID LIQUID MAERIAL CONTAINING SOLID WAX WITH SURFACES HAVING IRREGULARITY NOT SUBSTANTIALLY GREATER THAN 0.00005 INCH.
Claim 2
Dependent Claim
111 words
PROCESS FOR SEPARATING WAX FROM OIL WHICH COMPRISES: COOLING A HOMOGENEOUS LIQUID MATERIAL, WHICH REMAINS HOMOGENEOUS AFTER COOLING COMPRISING MAINLY A SOLUTION OF PETROLEUM OIL AND WAX IN A SOLVENT FOR PETROLEUM OIL AND CONTAINING 0.01 TO 10 WEIGHT PERCENT OF A SURFACE ACTIVE AGENT HAVING AN OLEOPHILIC PORTION AND A POLAR PORTION IN THE MOLECULE AND ADAPTED TO FORM A FILM ON SURFACES OF EQUIPMENT WITH WHICH THE LIQUID MATERIAL IS CONTACTED, THEREBY TO FORM SOLID WAX IN SAID LIQUID MATERIAL, SEPARATING SAID SOLID WAX FROM EXCESS LIQUID, AND PRIOR TO SAID SEPARATING, CONTACTING SAID LIQUID MAERIAL CONTAINING SOLID WAX WITH SURFACES HAVING IRREGULARITY NOT SUBSTANTIALLY GREATER THAN 0.00005 INCH.
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |