US3632835A
Expired / Lapsed
US
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Hydrocarbon isomerization process
Assignee: Universal Oil Products Co
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Filing: 1969-02-25
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Granted: 1972-01-04
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Expires: 1989-02-25
Abstract
Abstract ISOMERIZABLE HYDROCARBONS INCLUDING PARAFFINS, CYCLOPARAFFINS, OLEFINS, AND ALKYLAROMATICS, ARE ISOMERIZED BY CONTACTING THE HYDROCARBON, AT ISOMERIZATION CONDITIONS, WITH A CATALYTIC COMPOSITE CONTAINING A PLATINUM GROUP COMPONENT AND A RHENIUM COMPONENT COMBINED WITH A CARRIER MATERIAL CONTAINING ALUMINA AND A FINELY-DIVIDED CRYSTALLINE ALUMINOSILICATE.
Inventors
- 👤 Roy T Mitsche
- 👤 Ernest L Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:13
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/183; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/26; C07C5/2206; C07C5/226; C07C5/23; C07C5/25; C07C5/2506; C07C5/2556; C07C5/2702; C07C5/2724; C07C5/2729; C07C5/2732; C07C5/2754; C07C5/29; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/08; C07C2529/16; C07C2529/18; C07C2529/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P20/582
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |