Patents by Inventor Dennis O. Reinstad

Dennis O. Reinstad 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).

  • Frame for attachment to air filters
    Patent number: 5609937
    Abstract: A frame for a panel-like filter having two sides terminating in an edge comprises a semi-resilient deformable channel having an inwardly curved web with two flanges extending from a convex side thereof. The curved web also has a longitudinally extending stiffening rib projecting from the convex side thereof. The flanges are engageable with the sides of the filter.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: March 11, 1997
    Assignee: Research Products Corporation
    Inventor: Dennis O. Reinstad