US2921034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon cracking catalyst
Assignee: Individual
•
Filing: 1956-04-20
•
Granted: 1960-01-12
•
Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Houdry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:09
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD FOR THE PREPARATION OF CATALYSTS FOR THE CONVERSION OF HYDROCARBONS COMPRISING THE STEPS OF SUBJECTING A NON-GELATIONS FORM OF A SYNTHETIC SILICA-ALUMINA CATALYST HAVING RELATIVELY HIGH ACTIVITY FOR HYDROCARBON CONVERSION TO PARTICLE SIZE REDUCTION UNTIL SUBSTANTIALLY 100% THEREOF CONSISTS OF PARTICLES OF LESS THAN 50 MICRONS IN SIZE AND THE SPECIFIC SURFACE THEREOF IS AT LEAST 60,000 CM.2/CM.3, MIXING SAID SUBDIVIDED CATALYSTS WITH A NATURAL CLAY COMPRISED PREDOMINANTLY OF ALUMINA-SILLICATES AND HAVING A RELATIVELY LOW ACTIVITY FOR HYDROCARBON CONVERSION, SAID CLAY AND SAID SYNTHETIC CATALYSTS BEING MIXED IN PROPORTIONS RANGING FROM 60:40 TO 85:15, THEREAFTER SHAPING SAID MIXTURE INTO CATALYSTS PELLETS FO THE DESIRED SIZE AND SHAPE, AND HEAT TREATING SAID PELLETS.
Claim 2
Independent Claim
114 words
A METHOD FOR THE PREPARATION OF CATALYSTS FOR THE CONVERSION OF HYDROCARBONS COMPRISING THE STEPS OF SUBJECTING A NON-GELATIONS FORM OF A SYNTHETIC SILICA-ALUMINA CATALYST HAVING RELATIVELY HIGH ACTIVITY FOR HYDROCARBON CONVERSION TO PARTICLE SIZE REDUCTION UNTIL SUBSTANTIALLY 100% THEREOF CONSISTS OF PARTICLES OF LESS THAN 50 MICRONS IN SIZE AND THE SPECIFIC SURFACE THEREOF IS AT LEAST 60,000 CM.2/CM.3, MIXING SAID SUBDIVIDED CATALYSTS WITH A NATURAL CLAY COMPRISED PREDOMINANTLY OF ALUMINA-SILLICATES AND HAVING A RELATIVELY LOW ACTIVITY FOR HYDROCARBON CONVERSION, SAID CLAY AND SAID SYNTHETIC CATALYSTS BEING MIXED IN PROPORTIONS RANGING FROM 60:40 TO 85:15, THEREAFTER SHAPING SAID MIXTURE INTO CATALYSTS PELLETS FO THE DESIRED SIZE AND SHAPE, AND HEAT TREATING SAID PELLETS.
References Cited (Backward Citations)
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Cited
US2535948A
Cited
US2617169A
Cited
US2580429A
Cited
US2695893A
Cited
US2669547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |