US3848019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion of hydrocarbons using a rhenium-alumina catalyst
Assignee: Phillips Petroleum Co
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Filing: 1972-12-14
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Granted: 1974-11-12
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Expires: 1992-12-14
Abstract
Abstract 1. A CATALYTIC ISOMERIZATION PROCESS COMPRISING CONTACTING A HYDROCARBON FEEDSTREAM CONTAINING PARAFFINS OR NAPHTHENES OR MIXTURES THEREOF IN A CONTACTING ZONE WITH AN ACTIVE RHENIUM-CONTAINING ALUMINA CATALYST SAID CATALYST CONSISTING ESSENTIALLY OF ALUMINA AND FROM 0.01 TO 5 WEIGHT PERCENT RHENIUM PREPARED BY HEATING THE RHENIUMCONTAINING ALUMINA AT A TEMPERATURE IN THE RANGE OF 400 TO 1500*F. IN A DRY AMBIENT AND THEREAFTER TREATING THE HEATED RHENIUM-CONTAINING ALUMINA WITH AT LEAST ONE ANHYDROUS TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF CL2, HCL, HBR, BR2, AND THE CL AND BR DERIVATIVES OF METHANE AT A TEMPERATURE OF 400 TO 1500*F. FOR AT LEAST 10 MINUTES.
Inventors
- 👤 J Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:45
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/22; B01J23/00; B01J23/16; B01J23/32; B01J23/36; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2724
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A CATALYTIC ISOMERIZATION PROCESS COMPRISING CONTACTING A HYDROCARBON FEEDSTREAM CONTAINING PARAFFINS OR NAPHTHENES OR MIXTURES THEREOF IN A CONTACTING ZONE WITH AN ACTIVE RHENIUM-CONTAINING ALUMINA CATALYST SAID CATALYST CONSISTING ESSENTIALLY OF ALUMINA AND FROM 0.01 TO 5 WEIGHT PERCENT RHENIUM PREPARED BY HEATING THE RHENIUMCONTAINING ALUMINA AT A TEMPERATURE IN THE RANGE OF 400 TO 1500*F. IN A DRY AMBIENT AND THEREAFTER TREATING THE HEATED RHENIUM-CONTAINING ALUMINA WITH AT LEAST ONE ANHYDROUS TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF CL2, HCL, HBR, BR2, AND THE CL AND BR DERIVATIVES OF METHANE AT A TEMPERATURE OF 400 TO 1500*F. FOR AT LEAST 10 MINUTES.
Claim 2
Dependent Claim
104 words
A CATALYTIC ISOMERIZATION PROCESS COMPRISING CONTACTING A HYDROCARBON FEEDSTREAM CONTAINING PARAFFINS OR NAPHTHENES OR MIXTURES THEREOF IN A CONTACTING ZONE WITH AN ACTIVE RHENIUM-CONTAINING ALUMINA CATALYST SAID CATALYST CONSISTING ESSENTIALLY OF ALUMINA AND FROM 0.01 TO 5 WEIGHT PERCENT RHENIUM PREPARED BY HEATING THE RHENIUMCONTAINING ALUMINA AT A TEMPERATURE IN THE RANGE OF 400 TO 1500*F. IN A DRY AMBIENT AND THEREAFTER TREATING THE HEATED RHENIUM-CONTAINING ALUMINA WITH AT LEAST ONE ANHYDROUS TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF CL2, HCL, HBR, BR2, AND THE CL AND BR DERIVATIVES OF METHANE AT A TEMPERATURE OF 400 TO 1500*F. FOR AT LEAST 10 MINUTES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |