Patents by Inventor Michael A. Ott

Michael A. Ott 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).

  • Patent number: 5628254
    Abstract: A moisture barrier seal for use on a hopper car hatch opening that does not need to be removed before vacuum unloading of the hopper car due to the use of a grained plastic such as vertically drawn or cast polyethylene which will rupture as soon as the seal is subjected to the pressure differential across the seal created by the application of vacuum to the hopper car. The moisture barrier layer when combined with a filter layer forms a combination moisture barrier and filter seal.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: May 13, 1997
    Assignees: Hendee Enterprises, Inc., Salco Products, Inc.
    Inventors: Michael A. Ott, Alfred W. Hendee, Charles C. Hendee
  • Patent number: D721579
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: January 27, 2015
    Inventor: Michael A. Ott