Patents by Inventor Michael Anthony Ott

Michael Anthony 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).

  • Moisture barrier filter seal for hopper rail car hatches
    Patent number: 5794539
    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: May 12, 1997
    Date of Patent: August 18, 1998
    Assignees: Hendee Enterprises, Inc., Salco Products, Inc.
    Inventors: Michael Anthony Ott, Alfred W. Hendee, Charles C. Hendee