US2956001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of microcrystalline wax
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-12-03
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Granted: 1960-10-11
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Expires: 1978-12-03
Abstract
No abstract record available.
Inventors
- 👤 Spars Byron
- 👤 Herman J Zoeller
- 👤 Burton J Sutker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:25
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/42; C10G73/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD OF REFINING A HIG MOLECULAR WEIGHT MICROCRYSTALLINE WAX WHICH COMPRISES COMBINING A DEWAXED MICROCRYSTALLINE PETROLATUM CONTAINING FROM ABOUT 10 TO 50 WT. PERCENT OIL WITH A DESPHALTING SOLVENT IN THE RATIO OF ABOUT 30 TO 13 PARTS SOLVENT TO 1 PART PETROLATUM AT A TEMPERATURE IN THE RANGE OF ABOUT 140 TO 170*F., SEPARATING THE PETROLATUM AND SOLVENT, PASSING THE PETROLATUM IN ADMIXTURE WITH HYDROGEN CONTAINING GAS OVER A COBALT MOLYBDATE CATALYST ON AN ADSORBENT CARRIER AT TEMPERATURES IN THE RANGE OF ABOUT 400 TO 700*F. AND PRESSURE OF ABOUT 400 TO 1000 P.S.I.G., AND THEREAFTER DEOILING THE PETROLATUM TO AN OIL CONTENT OF LESS THAN 2.5 WT. PERCENT.
Claim 2
Independent Claim
111 words
A METHOD OF REFINING A HIG MOLECULAR WEIGHT MICROCRYSTALLINE WAX WHICH COMPRISES COMBINING A DEWAXED MICROCRYSTALLINE PETROLATUM CONTAINING FROM ABOUT 10 TO 50 WT. PERCENT OIL WITH A DESPHALTING SOLVENT IN THE RATIO OF ABOUT 30 TO 13 PARTS SOLVENT TO 1 PART PETROLATUM AT A TEMPERATURE IN THE RANGE OF ABOUT 140 TO 170*F., SEPARATING THE PETROLATUM AND SOLVENT, PASSING THE PETROLATUM IN ADMIXTURE WITH HYDROGEN CONTAINING GAS OVER A COBALT MOLYBDATE CATALYST ON AN ADSORBENT CARRIER AT TEMPERATURES IN THE RANGE OF ABOUT 400 TO 700*F. AND PRESSURE OF ABOUT 400 TO 1000 P.S.I.G., AND THEREAFTER DEOILING THE PETROLATUM TO AN OIL CONTENT OF LESS THAN 2.5 WT. PERCENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |