US3707581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin conversion process using catalyst containing a metal phosphate support
Assignee: Phillips Petroleum Co
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Filing: 1970-12-30
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Granted: 1972-12-26
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Expires: 1990-12-30
Abstract
Abstract OLEFINS ARE C ONVERTED INTO OTHER OLEFINS HAVING DIFFERENT NUMBERS OF CARBON ATOMS BY CONTACT WITH A CATALYST ACTIVE FOR DISPROPORTIONATING PROPYLENE INTO ETHYLENE AND BUTENE AND COMPRISING A PHOSPHATE OF ALUMINUM, ZIRCONIUM, CALCIUM, MAGNESIUM OR TITANIUM AND PROMOTED BY ONE OR MORE SELECTED COMPOUNDS OF TUNGSTEN, MOLYBDENUM, OR RHENIUM.
Inventors
- 👤 Louis F Heckelsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J27/00; B01J27/14; B01J27/186
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |