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:
Aug. 28, 1979
Filed:
Jan. 24, 1977
Applicant:
Inventors:
Henry G Petrow, Watertown, MA (US);
Robert J Allen, Saugus, MA (US);
Assignee:
Prototech Company, Newton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ; H01M / ; B01J / ;
U.S. Cl.
CPC ...
427115 ; 2521821 ; 2524253 ; 252430 ; 427125 ; 429 42 ;
Abstract
In the repeated production of a fuel cell component consisting of a uniform mixture of an electrocatalyst and a wetproofing agent, an aqueous colloidal fluorinated hydrocarbon resin dispersion is rapidly and reproducibly flocculated, preferably in less than 5 minutes, in the presence of an aqueous suspension of a novel platinum-on-carbon electrocatalyst by means of a polycationic salt solution, the salt concentration being preferably between 10.sup.-3 and 10.sup.-6 molar.