US3251899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dehydrogenation of olefins
Assignee: Standard Oil Co
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Filing: 1962-06-11
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Granted: 1966-05-17
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Expires: 1982-06-11
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
2026-11-01 22:24
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/18; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B01J23/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINS TO DIOLEFINS 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 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 URANIUM, THE SB:U 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 URANIUM IN THE PRESENCE OF OXYGEN AT AN ELEVATED TEMPERATURE OF ABOUT 500*F. BUT BELOW THEIR MELTING POINT FOR A TIME SUFFICIENT TO FORM SAID ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND URANIUM.
Claim 2
Dependent Claim
127 words
THE PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINS TO DIOLEFINS 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 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 URANIUM, THE SB:U 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 URANIUM IN THE PRESENCE OF OXYGEN AT AN ELEVATED TEMPERATURE OF ABOUT 500*F. BUT BELOW THEIR MELTING POINT FOR A TIME SUFFICIENT TO FORM SAID ACTIVE CATALYTIC OXIDE COMPLEX OF ANTIMONY AND URANIUM.
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 |