US2949418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of wax from oil
Assignee: Sunoco Inc
•
Filing: 1956-11-05
•
Granted: 1960-08-16
•
Expires: 1976-11-05
Abstract
No abstract record available.
Inventors
- 👤 James L Jezl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:17
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
METHOD OF OBTAINING A WAX CONCENTRATE FROM AN UNDILUTED WAX-BEARING HYDROCARBON OIL CONTAINING PARAFFIN WAX WHICH COMPRISES FORMING AN ADMIXTURE OF THE WAXBEARING HYDROCARBON OIL WITH PARTICULATE SOLIDS, HAVING A PARTICLE DENSITY LESS THAN THE DENSITY OF SAID HYDROCARBON OIL, SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYVINYL ALCOHOL, FOAMED PLASTICS OF THE UNICELLULAR TYPE, AND VESICULATED VOLCANIC GLASS, SUBJECTING SAID ADMIXTURE TO STRATIFICATION AT A TEMPERATURE AT WHICH AT LEAST A PORTION OF THE WAX IS SOLIDIFIED TO FORM AN UPPER LAYER COMPRISING A WAX CONCENTRATE IN ADMIXTURE WITH PARTUCULATE SOLIDS AND A LOWER LAYER COMPRISING OIL OF REDUCED WAX CONTENT, AND REMOVING WAX CONCENTRATE IN ADMIXTURE WITH SAID PARTICULATE SOLIDS FROM OIL OF REDUCED WAX CONTENT.
Claim 2
Dependent Claim
119 words
METHOD OF OBTAINING A WAX CONCENTRATE FROM AN UNDILUTED WAX-BEARING HYDROCARBON OIL CONTAINING PARAFFIN WAX WHICH COMPRISES FORMING AN ADMIXTURE OF THE WAXBEARING HYDROCARBON OIL WITH PARTICULATE SOLIDS, HAVING A PARTICLE DENSITY LESS THAN THE DENSITY OF SAID HYDROCARBON OIL, SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYVINYL ALCOHOL, FOAMED PLASTICS OF THE UNICELLULAR TYPE, AND VESICULATED VOLCANIC GLASS, SUBJECTING SAID ADMIXTURE TO STRATIFICATION AT A TEMPERATURE AT WHICH AT LEAST A PORTION OF THE WAX IS SOLIDIFIED TO FORM AN UPPER LAYER COMPRISING A WAX CONCENTRATE IN ADMIXTURE WITH PARTUCULATE SOLIDS AND A LOWER LAYER COMPRISING OIL OF REDUCED WAX CONTENT, AND REMOVING WAX CONCENTRATE IN ADMIXTURE WITH SAID PARTICULATE SOLIDS FROM OIL OF REDUCED WAX CONTENT.
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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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |