US3660506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of olefins
Assignee: Phillips Petroleum Co
•
Filing: 1970-01-26
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Granted: 1972-05-02
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Expires: 1990-01-26
Abstract
Abstract OLEFINS ARE CONVERTED BY CONTACT WITH A COMBINED CATALYST COMPRISING AN OLEFIN REACTION AND A DOUBLE BOND ISOMERIZATION CATALYST.
Inventors
- 👤 Robert L Banks
- 👤 Joseph R Kenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:55
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; C07C6/06; C07C45/00; C07C45/27; C07C45/29
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |