US3641189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disproportionation of olefines
Assignee: BP PLC
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Filing: 1965-08-26
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Granted: 1972-02-08
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Expires: 1985-08-26
Abstract
Abstract ACYCLIC MONO OLEFINS ARE DISPROPORTIONATED, I.E., CONVERTED INTO ACYCLIC MONO OLEFINS OF HIGHER AND LOWER CARBON NUMBERS THAN THE FEEDSTOCK OLEFIN, IN THE PRESENCE OF RHENIUM HEPTOXIDE ON ALUMINA.
Inventors
- 👤 Leonard Turner
- 👤 Eric James Howman
- 👤 Christopher Patrick Ca Bradsha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:57
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/32; B01J23/36; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/16; C07C2523/32; C07C2523/36
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |