Patent US2961414A successfully refreshed from Google Patents.
US2961414A
Expired / Lapsed
US
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Platinum and palladium catalysts
Assignee: MW Kellogg Co
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Filing: 1957-11-15
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Granted: 1960-11-22
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Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 Stella T Burton
- 👤 Philip A Lefrancois
- 👤 Earl W Riblett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J21/00; B01J21/06; B01J21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A CATALYST WHICH IS PREPARED BY THE METHOD WHICH COMPRISES COMBINING A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM IN AN AMOUNT SUFFICIENT TO PROVIDE A FINISHED CATALYST CONTAINING 0.01 TO ABOUT 5% METALLIC RESIDUE, A SILICA FORMING SUBSTANCE IN AN AMOUNT SUFFICIENT TO PROVIDE A FINISHED CATALYST CONTAINING ABOUT 0.5 TO ABOUT 15% OF SILICA, AND A CARRIER MATERIAL OTHER THAN SILICA, HEATING THE RESULTANT MIXTURE IN THE SUBSTANTIAL ABSENCE OF ADDED STEAM AT A TEMPERATURE NOT HIGHER THAN 1500*F. TO DECOMPOSE THE COMPOUND TO FORM A METALLIC RESIDUE ON THE SILICA AND CARRIER MATERIAL OTHER THAN SILICA.
Claim 2
Dependent Claim
105 words
A CATALYST WHICH IS PREPARED BY THE METHOD WHICH COMPRISES COMBINING A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM IN AN AMOUNT SUFFICIENT TO PROVIDE A FINISHED CATALYST CONTAINING 0.01 TO ABOUT 5% METALLIC RESIDUE, A SILICA FORMING SUBSTANCE IN AN AMOUNT SUFFICIENT TO PROVIDE A FINISHED CATALYST CONTAINING ABOUT 0.5 TO ABOUT 15% OF SILICA, AND A CARRIER MATERIAL OTHER THAN SILICA, HEATING THE RESULTANT MIXTURE IN THE SUBSTANTIAL ABSENCE OF ADDED STEAM AT A TEMPERATURE NOT HIGHER THAN 1500*F. TO DECOMPOSE THE COMPOUND TO FORM A METALLIC RESIDUE ON THE SILICA AND CARRIER MATERIAL OTHER THAN SILICA.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |