Patents by Inventor Paul Po Hang Fong

Paul Po Hang Fong 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).

  • Process for impregnating porous parts
    Patent number: 6800328
    Abstract: A process for impregnating a porous part is provided. In one embodiment, the process comprises impregnating the part with an impregnant that is not water soluble, and curing the impregnated part in a water bath. In another embodiment, the process comprises impregnating a part with an impregnant that is not water soluble, washing the impregnated part in a washing solution, and then curing the impregnated part in a water bath.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: October 5, 2004
    Assignee: Ballard Power Systems Inc.
    Inventors: Paul Po Hang Fong, Emerson R. Gallagher, Svetlana Loif
  • Control process for impregnating porous parts and apparatus therefor
    Patent number: 6534115
    Abstract: A process for impregnating at least one porous part with an impregnant is provided comprising: (a) immersing the porous part(s) in impregnant; (b) measuring at least one parameter indicative of the buoyancy of the porous part(s) as the impregnant impregnates the parts; and (c) interrupting impregnation when the measured parameter(s) indicates a predetermined level of impregnation is achieved. An apparatus for impregnating porous parts comprises a vessel for holding the porous part(s) and an impregnant, and a measuring device for measuring at least one parameter indicative of the buoyancy of the porous part(s) immersed in the impregnant within the vessel.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: March 18, 2003
    Assignee: Ballard Power Systems Inc.
    Inventors: Emerson Richard Gallagher, Paul Po Hang Fong, Oliver Clemens, Horst Thumm, David Brown
  • Process for impregnating porous parts
    Publication number: 20030049378
    Abstract: A process for impregnating a porous part is provided. In one embodiment, the process comprises impregnating the part with an impregnant that is not water soluble, and curing the impregnated part in a water bath. In another embodiment, the process comprises impregnating a part with an impregnant that is not water soluble, washing the impregnated part in a washing solution, and then curing the impregnated part in a water bath.
    Type: Application
    Filed: July 31, 2002
    Publication date: March 13, 2003
    Applicant: Ballard Power Systems Inc.
    Inventors: Paul Po Hang Fong, Emerson R. Gallagher, Svetlana Loif
  • Methacrylate impregnated carbonaceous parts
    Publication number: 20030039763
    Abstract: Fragile, porous carbonaceous parts can be impregnated with a methacrylate polymer by curing the impregnated methacrylate in a curing atmosphere above atmospheric pressure. Preferably, the curing atmosphere is substantially free of oxygen. Thin carbonaceous components of flexible graphite for use in solid polymer fuel cells can be suitably impregnated in this way.
    Type: Application
    Filed: September 24, 2002
    Publication date: February 27, 2003
    Inventors: Paul Po Hang Fong, Michael P. Sexsmith, David Brown
  • Control process for impregnating porous parts and apparatus therefor
    Publication number: 20020015779
    Abstract: A process for impregnating at least one porous part with an impregnant is provided comprising: (a) immersing the porous part(s) in impregnant; (b) measuring at least one parameter indicative of the buoyancy of the porous part(s) as the impregnant impregnates the parts; and (c) interrupting impregnation when the measured parameter(s) indicates a predetermined level of impregnation is achieved. An apparatus for impregnating porous parts comprises a vessel for holding the porous part(s) and an impregnant, and a measuring device for measuring at least one parameter indicative of the buoyancy of the porous part(s) immersed in the impregnant within the vessel.
    Type: Application
    Filed: June 29, 2001
    Publication date: February 7, 2002
    Inventors: Emerson Richard Gallagher, Paul Po Hang Fong, Oliver Clemens, Horst Thumm, David Brown
  • Methacrylate impregnated carbonaceous parts
    Publication number: 20010046560
    Abstract: Fragile, porous carbonaceous parts can be impregnated with a methacrylate polymer by curing the impregnated methacrylate in a curing atmosphere above atmospheric pressure. Preferably, the curing atmosphere is substantially free of oxygen. Thin carbonaceous components of flexible graphite for use in solid polymer fuel cells can be suitably impregnated in this way.
    Type: Application
    Filed: June 29, 2001
    Publication date: November 29, 2001
    Inventors: Paul Po Hang Fong, Michael P. Sexsmith, David Brown