Patents Represented by Attorney John S. Hendrickson

Find this attorney in the Justia Lawyer Directory

  • Process of imprinting catalytically active particles on membrane
    Patent number: 5547911
    Abstract: A membrane and electrode structure is formed by surface hydrolyzing an ion exchange membrane and then applying electrode ink of catalytically active particles on the surface of the membrane. The membrane and electrode structure of the present invention is particularly useful in fuel cells and batteries. The inventive process prevents the membrane from swelling or distorting following application of the electrode ink and also improves adhesion between the electrode ink layer and the surface of the membrane.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: August 20, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walther G. Grot
  • Electrolysis method using polymer additive for membrane cell operation where the polymer additive is ionomeric and added to the catholyte
    Patent number: 5512143
    Abstract: The operation of electrolytic cells employing ion exchange membranes is improved by addition to the catholyte of a fluorinated ionomer resin resulting in a long-term reduction in the operating voltage of the electrolytic cell.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: April 30, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James T. Keating