Patent US2664451A successfully refreshed from Google Patents.
US2664451A
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Process of dehydrogenation
Assignee: Phillips Petroleum Co
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Filing: 1949-10-24
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Granted: 1953-12-29
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Expires: 1969-10-24
Abstract
No abstract record available.
Inventors
- 👤 James R Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; B; B01; B01J; B01J21/00; B01J21/16; C07C5/321; C07C5/322; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE IMPROVED METHOD OF DEHYDROGENATING A DEHYDROGENATABLE HYDROCARBON TO A LESS SATURATED HYDROCARBON WHICH COMPRISES CONTACTING SAID DEHYDROGENATABLE HYDROCARBON UNDER DEHYDROGENATING CONDITIONS WITH A PELLETED ALUMINA CATALYST PREPARED BY THE STEPS OF CALCINING HYDRATED ALUMINA CONTAINING AT LEAST 28 PER CENT OF COMBINED WATER UNDER CONDITIONS SUCH THAT THE RESULTING MATERIAL WHEN IGNITED TO CONSTANT WEIGHT AT ABOUT 2200* F. UNDERGOES A WEIGHT LOSS RANGING FROM 20 TO 26 PER CENT, FORMING THE RESULTING MATERIAL INTO PELLETS, AND CALCINING SAID PELLETS UNDER SUCH CONDITIONS AS TO REMOVE RESIDUAL WATER OF HYDRATION, SO AS TO DEHYDROGENATE SAID DEHYDROGENATABLE HYDROCARBON TO A LESS SATURATED HYDROCARBON, AND RECOVERING THE RESULTING HYDROCARBON.
Claim 2
Dependent Claim
108 words
THE IMPROVED METHOD OF DEHYDROGENATING A DEHYDROGENATABLE HYDROCARBON TO A LESS SATURATED HYDROCARBON WHICH COMPRISES CONTACTING SAID DEHYDROGENATABLE HYDROCARBON UNDER DEHYDROGENATING CONDITIONS WITH A PELLETED ALUMINA CATALYST PREPARED BY THE STEPS OF CALCINING HYDRATED ALUMINA CONTAINING AT LEAST 28 PER CENT OF COMBINED WATER UNDER CONDITIONS SUCH THAT THE RESULTING MATERIAL WHEN IGNITED TO CONSTANT WEIGHT AT ABOUT 2200* F. UNDERGOES A WEIGHT LOSS RANGING FROM 20 TO 26 PER CENT, FORMING THE RESULTING MATERIAL INTO PELLETS, AND CALCINING SAID PELLETS UNDER SUCH CONDITIONS AS TO REMOVE RESIDUAL WATER OF HYDRATION, SO AS TO DEHYDROGENATE SAID DEHYDROGENATABLE HYDROCARBON TO A LESS SATURATED HYDROCARBON, AND RECOVERING THE RESULTING HYDROCARBON.
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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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |