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:
Jan. 23, 1979
Filed:
Dec. 12, 1977
Applicant:
Inventors:
Vinod M Jalan, Manchester, CT (US);
Calvin L Bushnell, Glastonbury, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
252447 ; 252472 ;
Abstract
Method for the production of highly dispersed electrochemically active platinum particles having an average diameter below about 50 A for use in electrodes for fuel cells. Platinum particles are formed by mixing chloroplatinic acid and sodium dithionite in water to provide a platinum containing colloidal dispersion which may be absorbed on a support material. Hydrogen peroxide can be mixed with the chloroplatinic acid and sodium dithionite to improve the stability of the platinum containing colloidal dispersion.