Patents by Inventor James H. Backus

James H. Backus 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).

  • Dustless mixing apparatus and method for combining materials
    Patent number: 3967815
    Abstract: This invention consists of a mixing method for dustless dry cementitious compositions and apparatus for combining materials without loss or escape of dust.
    Type: Grant
    Filed: August 27, 1974
    Date of Patent: July 6, 1976
    Inventors: James H. Backus, Charles E. Cornwell