Patents by Inventor Ronald D. Unthank

Ronald D. Unthank 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).

  • Crest supported filter frame assembly and method
    Patent number: 7255723
    Abstract: A fluid pleated filter assembly arrangement including a method and structure wherein crests of the pleated medium are sharp and narrow being enhanced by alignment of the fibers with the direction of fluid stream flow with the crests being supported by a preselectively controlled breadth and thickness support strip and adhesive fastening band disposed intermediate opposed side edges of the support strip.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: August 14, 2007
    Assignee: AAF McQuay, Inc.
    Inventors: Kyung-Ju Choi, Dennis R. Porter, Ronald D. Unthank