US3329602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dewaxing and deoiling process
Assignee: Sinclair Research Inc
•
Filing: 1958-08-04
•
Granted: 1967-07-04
•
Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Hallard C Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A SOLVENT EXTRACTION PROCESS FOR SEPARATING A MIXTURE OF RESIDUAL PETROLEUM OIL AND CRUDE WAX THROUGH TREAMTNET WITH A WAX PRECIPITATING SOLVENT, THE IMPROVEMENT WHICH COMPRISES PROVIDING AS A DISPERSED LIQUID IN SAID MIXTURE AT LEAST ABOUT .005 PERCENT BY WEIGHT BASED ON THE RESIDUAL OIL AND WAX OF A NORMALLY SOLID MATERIAL SELECTED FROM THE GROUP CONSISTING OF FISCHERTROPSCH HYDROCARBON WAX HAVING A MOLECULAR WEIGHT OF ABOUT 500 TO 1500, POLYETHYLENE AND CARBOXYLIC GROUPCONTAINING OXIDIZED POLYETHYLENE AND CARBOXYLIC GROUPCONTAINING OXIDIZED POLYETHYLENE, SAID OXIDIZED POLYETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 750, SAID PLYETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 100,000 AND SAID DISPERSED MATERIAL BEING PRESENT IN AN AMOUNT SUFFICIENT TO FACILITATE SEPARATION OF OIL AND WAX.
Claim 2
Dependent Claim
125 words
IN A SOLVENT EXTRACTION PROCESS FOR SEPARATING A MIXTURE OF RESIDUAL PETROLEUM OIL AND CRUDE WAX THROUGH TREAMTNET WITH A WAX PRECIPITATING SOLVENT, THE IMPROVEMENT WHICH COMPRISES PROVIDING AS A DISPERSED LIQUID IN SAID MIXTURE AT LEAST ABOUT .005 PERCENT BY WEIGHT BASED ON THE RESIDUAL OIL AND WAX OF A NORMALLY SOLID MATERIAL SELECTED FROM THE GROUP CONSISTING OF FISCHERTROPSCH HYDROCARBON WAX HAVING A MOLECULAR WEIGHT OF ABOUT 500 TO 1500, POLYETHYLENE AND CARBOXYLIC GROUPCONTAINING OXIDIZED POLYETHYLENE AND CARBOXYLIC GROUPCONTAINING OXIDIZED POLYETHYLENE, SAID OXIDIZED POLYETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 750, SAID PLYETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 100,000 AND SAID DISPERSED MATERIAL BEING PRESENT IN AN AMOUNT SUFFICIENT TO FACILITATE SEPARATION OF OIL AND WAX.
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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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |