The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 29, 1980

Filed:

Aug. 25, 1978
Applicant:
Inventor:

Alan Lauder, Newark, DE (US);

Assignee:

E. I. Du Pont de Nemours & Company, Wilmington, DE (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
252474 ; 4232135 ;
Abstract

Catalytic compositions having the general formula, ABO.sub.3, and a perovskite crystal structure, wherein the A sites are substantially fully occupied by barium ions. About 1% to 20% of the Type B cation sites are occupied by ions of at least one platinum group metal selected from ruthenium, osmium, rhodium, iridium, palladium and platinum, with ruthenium being present and occupying up to about 10% of the Type B cation sites. The balance of 80% to 99% of the Type B cation sites are occupied by ions of at least one metal having an atomic radius between 0.4 to 1.4 Angstroms. The compositions are useful in gaseous oxidation and reduction reactions.


Find Patent Forward Citations

Lauder, Alan. (1980). Barium- and ruthenium-containing perovskite catalysts (U.S. Patent No. 4200554). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4200554

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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