US2840530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of porous kaolin catalysts
Assignee: Houdry Process Corp
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Filing: 1954-07-20
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Granted: 1958-06-24
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Expires: 1974-07-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas H Milliken
- 👤 Walter L Weidman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS OF PREPARAING GRANULAR PARTICLES OF STABLE CARALYST HAVING A CAT-A ACTIVITY GREATER THAN 20 FROM KAOLIN-TYPE WHICH COMPRISES INTIMATELY MIXING SAID KAOLIN-TYPE CLAY IN FINELY DIVIDED FORM WITH FORM ABOUT 5% TO ABOUT 12% BY WEIGHT, CORRESPONDING TO AT LEAST 0.15 AND NOT MORE THAN 1.0 VOLUME RATIO, OF WOOD FLOUR FORMING THE RESULTING MIXTURE INTO GRANULAR PARTCLES, HEAT ING SAID GRANULAR PARTICLES IN AN OXIDIZING ATMOSPHERE, WHEREBY, SAID WOOD FLOUR IS BURNED OUT AT A TEMPERATURE OF ABOUT 1500*F., WELL BELOW THE FUSION TEMPERATURE OF SAID CLAY, AND RECOVERING SAID HEATED GRANULAR PARTICLES AS HARD, POROUS ACTIVE AND STABLE CATALYST PARTICLES CAPABLE OF SELECTIVELY PROMOTING FORMATION OF GASOLINE DURING THE CRACKING OF HIGHER BOILING HYDROCARBONS.
Claim 2
Dependent Claim
118 words
A PROCESS OF PREPARAING GRANULAR PARTICLES OF STABLE CARALYST HAVING A CAT-A ACTIVITY GREATER THAN 20 FROM KAOLIN-TYPE WHICH COMPRISES INTIMATELY MIXING SAID KAOLIN-TYPE CLAY IN FINELY DIVIDED FORM WITH FORM ABOUT 5% TO ABOUT 12% BY WEIGHT, CORRESPONDING TO AT LEAST 0.15 AND NOT MORE THAN 1.0 VOLUME RATIO, OF WOOD FLOUR FORMING THE RESULTING MIXTURE INTO GRANULAR PARTCLES, HEAT ING SAID GRANULAR PARTICLES IN AN OXIDIZING ATMOSPHERE, WHEREBY, SAID WOOD FLOUR IS BURNED OUT AT A TEMPERATURE OF ABOUT 1500*F., WELL BELOW THE FUSION TEMPERATURE OF SAID CLAY, AND RECOVERING SAID HEATED GRANULAR PARTICLES AS HARD, POROUS ACTIVE AND STABLE CATALYST PARTICLES CAPABLE OF SELECTIVELY PROMOTING FORMATION OF GASOLINE DURING THE CRACKING OF HIGHER BOILING HYDROCARBONS.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |