US2574331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of unstable petroleum wax
Assignee: Standard Oil Development Co
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Filing: 1947-10-29
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Granted: 1951-11-06
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Expires: 1967-10-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:13
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/42; C10G73/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR HYDROGENATING UNSTABLE PETROLEUM WAX COMPRISING THE LIQUID PHASE HYDROGENATION OF THE WAX OVER A CATALYTIC MATERIAL CONSISTING OF PLATINUM INCORPORATED WITH ALUMINA HAVING ULTRAMICROSCOPIC PORES IN WHICH A TEMPERATURE OF ABOUT 400* F., A PRESSURE OF ABOUT ATMOSPHERIC TO 300 P. S. I., A HYDROGENATION FEED RATE OF 100 TO 200 CUBIC FEET PER BARREL, AND A WAX FEED RATE OF 0.5 TO 2 V./V./HR. IS EMPLOYED
Claim 2
Dependent Claim
70 words
A PROCESS FOR HYDROGENATING UNSTABLE PETROLEUM WAX COMPRISING THE LIQUID PHASE HYDROGENATION OF THE WAX OVER A CATALYTIC MATERIAL CONSISTING OF PLATINUM INCORPORATED WITH ALUMINA HAVING ULTRAMICROSCOPIC PORES IN WHICH A TEMPERATURE OF ABOUT 400* F., A PRESSURE OF ABOUT ATMOSPHERIC TO 300 P. S. I., A HYDROGENATION FEED RATE OF 100 TO 200 CUBIC FEET PER BARREL, AND A WAX FEED RATE OF 0.5 TO 2 V./V./HR. IS EMPLOYED
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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) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |