US2536085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of gel-type dehydrogenation catalyst
Assignee: Phillips Petroleum Co
•
Filing: 1946-10-28
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Granted: 1951-01-02
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Expires: 1966-10-28
Abstract
No abstract record available.
Inventors
- 👤 Emory W Pitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; B; B01; B01J; B01J37/00; B01J37/02; B01J37/03; C07C5/321; C07C5/322; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR PREPARING A COMPOSITE DEHYDROGENATING METAL OXIDE, GEL-TYPE CATALYST, WHICH COMPRISES PREPARING A CONCENTRATED AQUEOUS SOLUTION OF SOLUBLE METAL SALTS CORRESPONDING TO THE DEHYDROGENATING METAL OXIDES OF SAID CATALYST; RAPIDLY PRECIPITATING THE HYDROUS METAL OXIDEW IN THE RANGES OF 50 TO 100* F. AND IN THE PH RANGE OF 5.2 TO 8.5 WITH A CONCENTRATED SOLUTION OF AMMONIUM HYDROXIDE; IMMEDIATELY AFTER COMPLETE PRECIPITATION, RECOVERING THE RESULTING PRECIPITATE AND DRYING THE SAME WITHOUT WASHING; AND CALCINING THE DRIED, UNWASHED PRECIPITATE AT AN ELEVATED TEMPERATURE SUFFICIENT TO CONVERT THE HYDROUS OXIDES TO CATALYTIC METAL OXIDES BUT INSUFFICIENT TO DEACTIVATE THE RESULTING CATALYTIC COMPOSITE, UNTIL THE HYDROUS OXIDES ARE CONVERTED TO CATALYTIC METAL OXIDES.
Claim 2
Dependent Claim
113 words
A PROCESS FOR PREPARING A COMPOSITE DEHYDROGENATING METAL OXIDE, GEL-TYPE CATALYST, WHICH COMPRISES PREPARING A CONCENTRATED AQUEOUS SOLUTION OF SOLUBLE METAL SALTS CORRESPONDING TO THE DEHYDROGENATING METAL OXIDES OF SAID CATALYST; RAPIDLY PRECIPITATING THE HYDROUS METAL OXIDEW IN THE RANGES OF 50 TO 100* F. AND IN THE PH RANGE OF 5.2 TO 8.5 WITH A CONCENTRATED SOLUTION OF AMMONIUM HYDROXIDE; IMMEDIATELY AFTER COMPLETE PRECIPITATION, RECOVERING THE RESULTING PRECIPITATE AND DRYING THE SAME WITHOUT WASHING; AND CALCINING THE DRIED, UNWASHED PRECIPITATE AT AN ELEVATED TEMPERATURE SUFFICIENT TO CONVERT THE HYDROUS OXIDES TO CATALYTIC METAL OXIDES BUT INSUFFICIENT TO DEACTIVATE THE RESULTING CATALYTIC COMPOSITE, UNTIL THE HYDROUS OXIDES ARE CONVERTED TO CATALYTIC METAL OXIDES.
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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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |