US3251900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative dehydrogenation of olefins with an antimony oxide-cerium oxide catalyst
Assignee: Standard Oil Co
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Filing: 1962-10-15
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Granted: 1966-05-17
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 James L Callahan
- 👤 Gertisser Berthold
- 👤 Grasselli Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/18; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINS TO DIOEFINS WHICH COMPRISES CONTACTING A MIXTURE OF OXYGEN AND AN OLEFIN HAVING AT LEAST FOUR UP TO ABOUT EIGHT NONQUATERNARY CARBON ATOMS, OF WHICH AT LEAST FOUR ARE ARRANGED IN A SERIES, IN THE VAPOR PHASE AT A TEMPERATURE AT WHICH THE OXIDATIVE DEHYDROGENATION PROCEEDS WITH A CATALYST CONSISTING ESSENTIALLY OF AN ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND CERIUM, THE SB:CE ATOMIC RATIO BEING WITHIN THE RANGE FROM ABOUT 1:50 TO ABOUT 99:1, SAID COMPLEX BEING FORMED BY HEATING THE MIXED OXIDES OF ANTIMONY AND CERIUM IN THE PRESENCE OF OXYGEN AT AN ELEVATED TEMPERATURE OF ABOVE 500*F. BUT BELOW THEIR MELTING POINT FOR A TIME SUFFICIENT TO FORM SAID ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND CERIUM.
Claim 2
Dependent Claim
128 words
THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINS TO DIOEFINS WHICH COMPRISES CONTACTING A MIXTURE OF OXYGEN AND AN OLEFIN HAVING AT LEAST FOUR UP TO ABOUT EIGHT NONQUATERNARY CARBON ATOMS, OF WHICH AT LEAST FOUR ARE ARRANGED IN A SERIES, IN THE VAPOR PHASE AT A TEMPERATURE AT WHICH THE OXIDATIVE DEHYDROGENATION PROCEEDS WITH A CATALYST CONSISTING ESSENTIALLY OF AN ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND CERIUM, THE SB:CE ATOMIC RATIO BEING WITHIN THE RANGE FROM ABOUT 1:50 TO ABOUT 99:1, SAID COMPLEX BEING FORMED BY HEATING THE MIXED OXIDES OF ANTIMONY AND CERIUM IN THE PRESENCE OF OXYGEN AT AN ELEVATED TEMPERATURE OF ABOVE 500*F. BUT BELOW THEIR MELTING POINT FOR A TIME SUFFICIENT TO FORM SAID ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND CERIUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |