Patent US2903411A successfully refreshed from Google Patents.
US2903411A
Expired / Lapsed
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Wax crystallization process
Assignee: Sunoco Inc
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Filing: 1957-01-02
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Granted: 1959-09-08
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Expires: 1977-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank R Shuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:01
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A WAX CRYSTALLIZATION PROCESS COMPRISING PASSING A WAX-BEARING OIL-SOLVENT MIXTURE INTO CONTACT WITH A COOLING SURFACE IN THE PRESENCE OF SHAPR-EDGED SOLID PARTICLES FORMED OF A TOUGH PLASTIC MATERIAL ESSENTIALLY INSOLUBLE IN THE OIL-SOLVENT MIXTURE, SUBSTANTIALLY SOFTER THAN THE MATERIAL FROM WHICH THE COOLING SURFACE IS FORMED, AND HAVING A GREATER SPECIFIC GRAVITY THAN THE OIL-SOLVENT MIXTURE; AND COOLING THE OIL-SOLVENT MIXTURE TO A WAX CRYSTALLIZATION TEMPERATURE WHILE MOVING THE SOLID PARTICLES IN SCRAPING ENGAGEMENT WITH THE COOLING SURFACE.
Claim 2
Dependent Claim
79 words
A WAX CRYSTALLIZATION PROCESS COMPRISING PASSING A WAX-BEARING OIL-SOLVENT MIXTURE INTO CONTACT WITH A COOLING SURFACE IN THE PRESENCE OF SHAPR-EDGED SOLID PARTICLES FORMED OF A TOUGH PLASTIC MATERIAL ESSENTIALLY INSOLUBLE IN THE OIL-SOLVENT MIXTURE, SUBSTANTIALLY SOFTER THAN THE MATERIAL FROM WHICH THE COOLING SURFACE IS FORMED, AND HAVING A GREATER SPECIFIC GRAVITY THAN THE OIL-SOLVENT MIXTURE; AND COOLING THE OIL-SOLVENT MIXTURE TO A WAX CRYSTALLIZATION TEMPERATURE WHILE MOVING THE SOLID PARTICLES IN SCRAPING ENGAGEMENT WITH THE COOLING SURFACE.
References Cited (Backward Citations)
US2584966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |