Patent US1697522A successfully refreshed from Google Patents.
Patent US3156735A successfully refreshed from Google Patents.
US3156735A
Expired / Lapsed
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Oxidative dehydrogenation using goldplatinum group metal catalyst
Assignee: Shell USA Inc
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Filing: 1960-12-12
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Granted: 1964-11-10
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Warren E Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:13
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/48; B01J23/52; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/48; C07C2523/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE PROCESS FOR OXIDATIVELY CONVERTING OLEFINICALLY UNSATURATED HYDROCARBONS TO CORRESPONDING MORE UNSATURATED HYDROCARBONS HAVING A HIGHER CARBON TO HYDROGEN RATIO WHICH CONSISTS ESSENTIALLY OF CONTACTING SAID OLEFINICALLY UNSATURATED HYDROCARBONS, IN ADMIXTURE WITH OXYGEN, AT AN ELEVATED TEMPERATURE, WITH A CATALYTICALLY ACTIVE COMPOSITION CONSISTING ESSENTIALLY OF GOLD IN COMBINATION WITH A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, RHODIUM, RUTHENIUM AND IRIDIUM, AND A SOLID REFRACTORY OXIDE SUPPORTING MATERIAL HAVING A SURFACE AREA LESS THAN 8 M.2/G., SAID CATALYTICALLY ACTIVE COMPOSITION CONTAINING SAID GOLD AND SAID NOBLE METAL IN A RATIO OF FROM ABOUT 0.2 TO ABOUT 25 ATOMS OF GOLD PER ATOM OF SAID NOBLE METAL.
Claim 2
Dependent Claim
109 words
THE PROCESS FOR OXIDATIVELY CONVERTING OLEFINICALLY UNSATURATED HYDROCARBONS TO CORRESPONDING MORE UNSATURATED HYDROCARBONS HAVING A HIGHER CARBON TO HYDROGEN RATIO WHICH CONSISTS ESSENTIALLY OF CONTACTING SAID OLEFINICALLY UNSATURATED HYDROCARBONS, IN ADMIXTURE WITH OXYGEN, AT AN ELEVATED TEMPERATURE, WITH A CATALYTICALLY ACTIVE COMPOSITION CONSISTING ESSENTIALLY OF GOLD IN COMBINATION WITH A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, RHODIUM, RUTHENIUM AND IRIDIUM, AND A SOLID REFRACTORY OXIDE SUPPORTING MATERIAL HAVING A SURFACE AREA LESS THAN 8 M.2/G., SAID CATALYTICALLY ACTIVE COMPOSITION CONTAINING SAID GOLD AND SAID NOBLE METAL IN A RATIO OF FROM ABOUT 0.2 TO ABOUT 25 ATOMS OF GOLD PER ATOM OF SAID NOBLE METAL.
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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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |