Patent US3586730A successfully refreshed from Google Patents.
US3586730A
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Dehydrogenation of hydrocarbons of 4 to 5 carbon atoms
Assignee: Sinclair Research Inc
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Filing: 1966-10-28
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Granted: 1971-06-22
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Expires: 1986-10-28
Abstract
Abstract HYDROCARBONS OF 4 TO 5 CARBON ATOMS ARE SUBJECTED TO VAPOR PHASE DEHYDROGENATION IN THE PRESENCE OF A DEHYDROGENATION CATALYST CONSISTING ESSENTIALLY OF A MINOR AMOUNT OF A PLATINUM GROUP METAL, ABOUT 5 TO 50 WEIGHT PERCENT OF CR2O3, ABOUT 0.1 TO 2 WEIGHT PERCENT OF ALKALI METAL AS THE ALKALI METAL OXIDE, AND AT LEAST ABOUT 30 WEIGHT PERCENT OF ACTIVATED ALUMINA.
Inventors
- 👤 Glenn O Michaels
- 👤 John Mooi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:46
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6522; C07C5/321; C07C5/324; C07C5/325; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/652
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |