US2934574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogenation of butadiene in admixture with butenes with cobalt molybdateas catalyst
Assignee: Tidewater Oil Co
•
Filing: 1957-01-11
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Granted: 1960-04-26
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Expires: 1977-01-11
Abstract
No abstract record available.
Inventors
- 👤 Viland Clare Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:23
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR ELIMINATING BUTADIENE FROM A DRY MIXTURE THEREOF WITH BUTYLENES, COMPRISING HYDROGENATING THE DRY MIXTURE IN THE PRESENCE OF COBALT MOLYBDATE CATALYST AT BETWEEN 30*F. AND 600*F. AND AT A VAPOR SPACE VELOCITY BETWEEN 200 AND 10,000 VOLUMES OF GAS PER VOLUME OF CATALYST, TO CONVERT THE BUTADIENE TO BUTYLENE WHILE LEAVING THE ORIGINAL BUTYLENE SUBSTANTIALLY UNCHANGED.
Claim 2
Dependent Claim
59 words
A PROCESS FOR ELIMINATING BUTADIENE FROM A DRY MIXTURE THEREOF WITH BUTYLENES, COMPRISING HYDROGENATING THE DRY MIXTURE IN THE PRESENCE OF COBALT MOLYBDATE CATALYST AT BETWEEN 30*F. AND 600*F. AND AT A VAPOR SPACE VELOCITY BETWEEN 200 AND 10,000 VOLUMES OF GAS PER VOLUME OF CATALYST, TO CONVERT THE BUTADIENE TO BUTYLENE WHILE LEAVING THE ORIGINAL BUTYLENE SUBSTANTIALLY UNCHANGED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |