US3679602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon isomerization process
Assignee: Universal Oil Products Co
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Filing: 1969-02-25
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Granted: 1972-07-25
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Expires: 1989-02-25
Abstract
Abstract ISOMERIZABLE HYDROCARBONS INCLUDING PARAFFINS, CYCLOPARAFFINS, OLEFINS AND ALKYLAROMATICS ARE ISOMERIZED BY CONTRACTING THE HYDROCARBON AT ISOMERIZATION CONDITIONS WITH A CATALYTIC COMPOSITE OF ALUMINA HAVING COMBINED THEREWITH A PLATINUM GROUP METALLIC COMPONENT, A HALOGEN COMPONENT AND A RHENIUM COMPONENT.
Inventors
- 👤 Ernest L Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J27/00; B01J27/06; B01J27/08; C07C5/23; C07C5/25; C07C5/2506; C07C5/2556; C07C5/2729; C07C5/2732; C07C5/2754; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P20/582; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |