Patents by Inventor Albert Porterfield

Albert Porterfield 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).

  • Air filtering assembly
    Patent number: 6379412
    Abstract: A air filtering assembly for removing particulate matter from air supplied through HVAC ducts. The air filtering assembly includes a frame assembly including a connection assembly adapted for coupling to an air vent, and an air filter couplable to the frame assembly and positioned adjacent to the air vent for filtering the air directed through the air vent.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: April 30, 2002
    Inventor: Albert Porterfield