Patents by Inventor Lester W. Bates

Lester W. Bates 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).

  • Sound attenuating polymer composites
    Patent number: 5378733
    Abstract: A polyurethane composite for the attenuation of sound having a two part polyurethane binder, a high density particulate filler having a specific gravity greater than 2.0 and a very low density void forming filler having a specific gravity less than 0.50.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: January 3, 1995
    Assignee: Seaward International, Inc.
    Inventors: Lester W. Bates, Eric P. Buchanan