US2917565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of paraffinic hydrocarbons and method of activating the isomerization catalyst
Assignee: Pure Oil Co
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Filing: 1956-10-31
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Granted: 1959-12-15
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Expires: 1976-10-31
Abstract
No abstract record available.
Inventors
- 👤 Norman L Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J37/00; B01J37/02; B01J37/0201; B01J37/16; B01J37/18; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2772; C07C5/2791; Y; Y10; Y10S; Y10S502/00; Y10S502/523
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
A METHOD OF PREPARING A HIGHLY-ACTIVE, REACTIVATABLE, VIRGIN ISOMERIZATION CATALYST WHICH COMPRISES INCORPORATING IN AN ACIDIC MIXED-OXIDES HYDROCARBON CRACKING CATALYST SUPPORT ABOUT 2 TO 8 WT. PERCENT OF A HYDROGENATING AGENT, CALCINING THE CATALYST AT A TEMPERATURE ABOVE ABOUT 900*F. AND CIRCULATING A REDUCING GAS THEREOVER, THEREBY PRODUCING A CATALYST COMPOSITION WITH THE HYDROGENATING AGENT IN A REDUCED FORM, SUBJECTING THE REDUCED CATALYST COMPOSITION TO AN OXIDIZING ATMOSPHERE AT A TEMPERATURE OF ABOUT 650*-850*F., FOR A TIME SUFFICIENT TO OXIDIZE COMPLETELY THE OXIDIZABLE CONSTITUENTS OF THE CATALYST COMPOSITION, AND THEREAFTER CONTACTING THE OXIDIZED CATALYST COMPOSITION WITH SUBSTANTIALLY PURE HYDROGEN AT 650*850*F. FOR A TIME SUFFICIENT TO SUBSTANTIALLY COMPLETELY REDUCE THE HYDROGENATING AGENT THEREON.
Claim 2
Independent Claim
113 words
A METHOD OF PREPARING A HIGHLY-ACTIVE, REACTIVATABLE, VIRGIN ISOMERIZATION CATALYST WHICH COMPRISES INCORPORATING IN AN ACIDIC MIXED-OXIDES HYDROCARBON CRACKING CATALYST SUPPORT ABOUT 2 TO 8 WT. PERCENT OF A HYDROGENATING AGENT, CALCINING THE CATALYST AT A TEMPERATURE ABOVE ABOUT 900*F. AND CIRCULATING A REDUCING GAS THEREOVER, THEREBY PRODUCING A CATALYST COMPOSITION WITH THE HYDROGENATING AGENT IN A REDUCED FORM, SUBJECTING THE REDUCED CATALYST COMPOSITION TO AN OXIDIZING ATMOSPHERE AT A TEMPERATURE OF ABOUT 650*-850*F., FOR A TIME SUFFICIENT TO OXIDIZE COMPLETELY THE OXIDIZABLE CONSTITUENTS OF THE CATALYST COMPOSITION, AND THEREAFTER CONTACTING THE OXIDIZED CATALYST COMPOSITION WITH SUBSTANTIALLY PURE HYDROGEN AT 650*850*F. FOR A TIME SUFFICIENT TO SUBSTANTIALLY COMPLETELY REDUCE THE HYDROGENATING AGENT THEREON.
Claim 3
Dependent Claim
65 words
A PROCESS FOR ISOMERIZING A CHARGE STOCK CONSISTING ESSENTIALLY OF N-PARAFFIN HYDROCARBONS CONTAINING LESS THAN 8 CARBON ATOMS PER MOLECULE IN ADMIXTURE WITH HYDROGEN AT A HYDROGEN/HYDROCARBON MOL RATIO OF 0.5 TO 6.0, A LIQUID HOURLY SPACE VELOCITY OF 0.1 TO 2.0, A PRESSURE OF 50-1000 P.S.I.G., AND A TEMPERATURE OF 600*-750*F., BY CONTACT WITH A CATALYST PRODUCED IN THE PROCESS DEFINED IN CLAIM 1.
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |