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US3336240A
Expired / Lapsed
US
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Method for the manufacture of catalytically active clay
Assignee: Sinclair Research Inc
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Filing: 1965-02-11
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Granted: 1967-08-15
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Expires: 1985-02-11
Abstract
No abstract record available.
Inventors
- 👤 Erickson Henry
- 👤 Wayne L Disegna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:56
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; C; C10; C10G; C10G25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR MANUFACTURE OF A SOLID CONTACT MATERIAL WHICH COMPRISES TREATING AN ESSENTIALLY CATALYTICALLY INACTIVE CLAY CONTAINING ABOUT 35 TO 50% ALUMINA, THE BALANCE OF THE NON-VOLATILE MATTER BEING ESSENTIALLY SILICA, WITH AN AQUEOUS SOLUTION TO WHICH A PH GREATER THAN 7 HAS BEEN IMPARTED BY THE PRESENCE THEREIN OF AMMONIUM IONS, FOR A TIME SUFFICIENT TO GIVE A MATERIAL CONTAINING ABOUT 0.1 TO 10% AMMONIA, AND HEATING THE AMMONIATREATED SOLID TO A TEMPERATURE OF AT LEAST ABOUT 250*F. TO DECOMPOSE AMMONIUM IONS.
Claim 2
Independent Claim
84 words
A METHOD FOR MANUFACTURE OF A SOLID CONTACT MATERIAL WHICH COMPRISES TREATING AN ESSENTIALLY CATALYTICALLY INACTIVE CLAY CONTAINING ABOUT 35 TO 50% ALUMINA, THE BALANCE OF THE NON-VOLATILE MATTER BEING ESSENTIALLY SILICA, WITH AN AQUEOUS SOLUTION TO WHICH A PH GREATER THAN 7 HAS BEEN IMPARTED BY THE PRESENCE THEREIN OF AMMONIUM IONS, FOR A TIME SUFFICIENT TO GIVE A MATERIAL CONTAINING ABOUT 0.1 TO 10% AMMONIA, AND HEATING THE AMMONIATREATED SOLID TO A TEMPERATURE OF AT LEAST ABOUT 250*F. TO DECOMPOSE AMMONIUM IONS.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |