Patents by Inventor Pui Yan Joyce Yip

Pui Yan Joyce Yip 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: 7659017
    Abstract: For various reasons, it can be desirable to subject fuel cells to drying procedures. In solid polymer electrolyte fuel cells for instance, drying may be carried out prior to storing at below freezing temperatures, or to recover cell performance lost following freeze/thaw events. An improved drying method involves drying the cell uniformly throughout. That is, the drying power over the length of the fuel cell is adjusted to be essentially uniform. This can be accomplished by using an appropriate set of operating conditions. The improved drying method can improve the lifetime of the fuel cell.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: February 9, 2010
    Assignees: Daimier AG, Ford Motor Company
    Inventors: Pui Yan Joyce Yip, Julie Bellerive, Stephen J. Lee