US2943067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts for conversion of hydrocarbons
Assignee: California Research LLC
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Filing: 1957-06-28
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Granted: 1960-06-28
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Expires: 1977-06-28
Abstract
No abstract record available.
Inventors
- 👤 Robert P Sieg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/28; C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/28; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A DEHYDROGENATION CATAYLST FOR THE CATALYTIC DEHYDROGENATION OF MORE SATURATED C4 HYDROCARBONS TO BUTADIENE, WHICH COMPRISES AN ALUMINA PREPARED BY PRECIPITATION FROM A SOLUTION OF AN ALUMINUM SALT BY ADDITION OF AN ALKALINE PRECIPITATING AGENT AND, SUPPORTED ON SAID ALUMINA, A TOTAL OF FROM ABOUT 0.025 TO 0.5% BY WEIGHT OF AT LEAST ONE WATER-SOLUBLE OXIDE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, LITHIUM AND RUBIDIUM OXIDES, AND A TOTAL OF FROM ABOUT 3 TO 40% BY WEIGHT OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF CHROMIUM AND MOLYBDENUM OXIDES, SAID CATALYST HAVING A SURFACE AREA BETWEEN ABOUT 30 AND 100M.2/G.
Claim 2
Dependent Claim
104 words
A DEHYDROGENATION CATAYLST FOR THE CATALYTIC DEHYDROGENATION OF MORE SATURATED C4 HYDROCARBONS TO BUTADIENE, WHICH COMPRISES AN ALUMINA PREPARED BY PRECIPITATION FROM A SOLUTION OF AN ALUMINUM SALT BY ADDITION OF AN ALKALINE PRECIPITATING AGENT AND, SUPPORTED ON SAID ALUMINA, A TOTAL OF FROM ABOUT 0.025 TO 0.5% BY WEIGHT OF AT LEAST ONE WATER-SOLUBLE OXIDE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, LITHIUM AND RUBIDIUM OXIDES, AND A TOTAL OF FROM ABOUT 3 TO 40% BY WEIGHT OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF CHROMIUM AND MOLYBDENUM OXIDES, SAID CATALYST HAVING A SURFACE AREA BETWEEN ABOUT 30 AND 100M.2/G.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |