Patents by Inventor Melmuth S. Willis, Sr.

Melmuth S. Willis, Sr. 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).

  • Extrudable thermoplastic compositions containing a flour filler
    Patent number: 3988270
    Abstract: A thermoplastic composition suitable for extrusion from an extrusion apparatus consists essentially of a resin, from about 1% to about 30% by weight of a finely-divided filler selected from the group consisting of rice hull flour, cherry pit flour, pecan shell flour and walnut shell flour and the filler containing up to about 3.0% by weight of water. Addition of from less than 1% to up to about 5% by weight of lubricant, such as mineral oil permits the use of a finely-divided filler containing up to about 4.0% of water with an unvented extrusion apparatus and up to about 5.0% of water with a vented extrusion apparatus.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: October 26, 1976
    Assignee: Johnston Flour Mills, Inc.
    Inventors: Melmuth S. Willis, Jr., Melmuth S. Willis, Sr., Jack D. Young