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.
Patent No.:
Date of Patent:
Feb. 01, 1977
Filed:
Apr. 23, 1975
Applicant:
Inventors:
Peter Faber, Grosswelzheim, DT;
Jean Brenet, Strasbourg, FR;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423605 ;
Abstract
Manganese dioxide is prepared from a manganese (III)-containing oxide by disproportionating the latter with a perhalo acid to yield both manganese dioxide and a solution containing manganese (II) ions, and, if desired, removing the manganese dioxide precipitate from the manganese (II) ion solution. The manganese (II) solution wherein the manganese exists as a manganese (II) perhalate can then be quantitatively oxidized to manganese dioxide by ozone.