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:
Jun. 22, 1982
Filed:
Oct. 15, 1980
Applicant:
Inventor:
Hans Sauer, Idstein-Walsdorf, DE;
Assignee:
Varta Batterie A.G., Hanover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
264105 ; 427115 ; 427122 ; 427221 ; 524546 ;
Abstract
In the continuous manufacture of plastic-cohered gas diffusion electrodes, and particularly air electrodes, in the form of thin foils, a dry mixture of PTFE and active carbon powder is subjected, during the mixing process in a paddle mixer, to the additional intensive influence of rapidly rotating cutting knives. The degree of subdivision and homogeneity of the dry mixture is thereby enhanced to such a degree that, in the finished electrode tape, the mass does not exhibit nonuniform thickening.