US3553281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization process and catalyst therefor
Assignee: BP PLC
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Filing: 1961-09-01
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Granted: 1971-01-05
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Expires: 1981-09-01
Abstract
Abstract A CATALYST SUITABLE FOR THE ISOMERIZATION OF C4 AND HIGHER PARAFFINIC HYDROCARBONS IS PREPARED BY CONTACTING ALUMINA WITH A COMPOUND OF THE FORMULA X-C(-CL)2-Y UNDER CONDITIONS SUCH THAT FREE ALUMINUM CHLORIDE IS NOT FORMED, X AND Y MAY BE THE SAME OR DIFFERENT AND SELECTED FROM H, CL, BR, F OR SCL, OR X AND Y TOGHETHER MAY BE O OR S. THE CATALYST MAY OPTIONALLY CONTAIN A METAL OR METAL COMPOUND HAVING HYD. OGENATING ACTIVITY SELECTED FROM GROUP VIA OR VIII OF THE PERIODIC TABLETHE PREFERRED BEING THE PLATINUM GROUP METALS.
Inventors
- 👤 Anthony George Goble
- 👤 John Norman Haresnape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:10
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2724; C07C5/2705; C07C5/2767; C07C5/277; C07C5/2791
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |