Patents by Inventor Wai Huey

Wai Huey 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).

  • Well blowout preventer, and packing element
    Patent number: 4461448
    Abstract: A well blowout preventer packer unit is characterized by long life, and induced back to front (radial) rubber feeding between metallic inserts to close on well pipe for producing a pressure gradient against the pipe which is greatest at the bottom of the packer extent engaging the pipe, and lowest at the top of the packer extent engaging the pipe.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: July 24, 1984
    Assignee: Hydril Company
    Inventors: Wai Huey, Fernando Murman, Eugene Matsuda