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:
Oct. 09, 1979
Filed:
Oct. 20, 1978
Applicant:
Inventor:
Robert B Simmons, Norton, OH (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ; C25B / ; C25B / ;
U.S. Cl.
CPC ...
204295 ; 204296 ; 521 27 ;
Abstract
Disclosed is a method of preparing a hydrous zirconium oxide diaphragm by treating a porous matrix with ZrOCl.sub.2 and hydrolyzing the ZrOCl.sub.2 to ZrO.sub.2 with NH.sub.3. The disclosed method contemplates leaching out the NH.sub.4 Cl, dehydrating the substrate, and sequentially building up the ZrO.sub.2.