US3078518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing rounded contact masses
Assignee: Minerals and Chemicals Philipp Corp
•
Filing: 1961-08-07
•
Granted: 1963-02-26
•
Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Robinson
- 👤 Walter L Haden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:46
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J2/00; B01J2/20; Y; Y10; Y10S; Y10S264/00; Y10S264/39; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
IN A METHOD FOR THE PREPARATION OF ROUNDED CONTACT MASSES FROM KAOLIN CLAY COMPRISING THE STEPS OF MIXING THE CALY WITH FROM ABOUT 60 TO 125 PERCENT DOSAGE OF CONCENTRATED SULFURIC ACID, EXTRUDING THE MIXTURE TO FORM PELLETS OF PLASTIC CONSISTENCY, CONTACTING SAID PELLETS WHILE STILL OF PLASTIC CONSISTENCY WITH LOW VISCOSITY HYDROCARBON LIQUID, TUMBLING SAID PELLETS WHILE STILL OF PLASTIC CONSISTENCY AND IN THE PRESENCE OF SAID HYDROCARBON LIQUID FOR A TIME SUFFICIENT TO DEFORM SAID PELLETS INTO SUBSTANTIALLY SPHERCIAL FORM WITHOUT REMOVAL OF MATERIAL THEREFORM, AGING THE SPHERES AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO COMPLETE REACTION BETWEEN SAID ACID AND ALUMINA OF SAID CLAY, THUS CONVERTING SAID SPHERES TO A NONPLASTIC STATE AND THEN, WITHOUT WASHING OUT WATERSOLUBLE REACTION PRODUCTS, CALCINING SAID SPHERES AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO ELIMINATE SUBSTANTIALLY COMPLETELY SAID HYDROCARBON LIQUID AND TO ELIMINATE SUBSTANTIALLY COMPLETELY THE SULFATE CONTENT OF SAID SPHERES, THEREBY PRODUCING ACTIVE ROUNDED CONTACT MASSES, THE IMPROVEMENT COMPRISING MIXING SAID ACID AND SAID KAOLIN CLAY, PRIOR TO THE EXTRUSION THEREOF, WITH A SMALL QUANTITY OF AN ORGANIC AMINE.
Claim 2
Dependent Claim
183 words
IN A METHOD FOR THE PREPARATION OF ROUNDED CONTACT MASSES FROM KAOLIN CLAY COMPRISING THE STEPS OF MIXING THE CALY WITH FROM ABOUT 60 TO 125 PERCENT DOSAGE OF CONCENTRATED SULFURIC ACID, EXTRUDING THE MIXTURE TO FORM PELLETS OF PLASTIC CONSISTENCY, CONTACTING SAID PELLETS WHILE STILL OF PLASTIC CONSISTENCY WITH LOW VISCOSITY HYDROCARBON LIQUID, TUMBLING SAID PELLETS WHILE STILL OF PLASTIC CONSISTENCY AND IN THE PRESENCE OF SAID HYDROCARBON LIQUID FOR A TIME SUFFICIENT TO DEFORM SAID PELLETS INTO SUBSTANTIALLY SPHERCIAL FORM WITHOUT REMOVAL OF MATERIAL THEREFORM, AGING THE SPHERES AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO COMPLETE REACTION BETWEEN SAID ACID AND ALUMINA OF SAID CLAY, THUS CONVERTING SAID SPHERES TO A NONPLASTIC STATE AND THEN, WITHOUT WASHING OUT WATERSOLUBLE REACTION PRODUCTS, CALCINING SAID SPHERES AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO ELIMINATE SUBSTANTIALLY COMPLETELY SAID HYDROCARBON LIQUID AND TO ELIMINATE SUBSTANTIALLY COMPLETELY THE SULFATE CONTENT OF SAID SPHERES, THEREBY PRODUCING ACTIVE ROUNDED CONTACT MASSES, THE IMPROVEMENT COMPRISING MIXING SAID ACID AND SAID KAOLIN CLAY, PRIOR TO THE EXTRUSION THEREOF, WITH A SMALL QUANTITY OF AN ORGANIC AMINE.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |