Patents by Inventor Dervn Chu

Dervn Chu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6245707
    Abstract: Methanol tolerant catalyst materials and a method of making the same are provided. These novel catalyst materials are obtained by mixing together and heat-treating at least two different transition-metal-containing nitrogen chelates. In preferred embodiments, the nitrogen chelates comprise metalloporphyrins such as transition-metal-containing tetraphenylporphins. Preferred transition metals are iron, cobalt, nickel, copper, manganese, ruthenium, vanadium, and zinc, but could be any transition metal other than platinum or palladium. These materials offer improved catalytic oxygen reduction in the presence of methanol, as may occur at a fuel cell cathode after methanol crossover.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: June 12, 2001
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Dervn Chu, Rongzbong Jiang