Patent US3600456A successfully refreshed from Google Patents.
US3600456A
Expired / Lapsed
US
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Production of c7-c20 olefins
Assignee: BP PLC
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Filing: 1968-12-05
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Granted: 1971-08-17
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Expires: 1988-12-05
Abstract
Abstract C7-20 OLEFINS ARE PREPARED BY CONTACTING OLEFINS OF CARBON NUMBER C3 OR HIGHER WITH A DISPROPORTIONATION CATALYST COMPRISING RHENIUM HEPTOXIDE OR RHENIUM CARBONYL SUPPORTED ON A METAL OXIDE, AND AN ISOMERISATION CATALYST E.G. POTASSIUM ON ALUMINA.
Inventors
- 👤 Christopher Patrick C Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:47
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/12; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/70; C07C2523/74; C07C2523/755; C07C2531/00; C07C2531/16; C07C2531/20
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |