Patents by Inventor Donald Harold Ashmus

Donald Harold Ashmus 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).

  • Apparatus for application of foam to a substrate
    Patent number: 4023526
    Abstract: Foam applicator heads for the application of a functional chemical treating composition in the form of a froth or foam to a substrate, such as a textile or fabric. The apparatus enables the uniform application in foam form of many functional chemicals composition that are to be used for treatment of the substrate in such manner as to leave the treated material essentially dry to the touch when the treating substrate was initially dry to the touch.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: May 17, 1977
    Assignee: Union Carbide Corporation
    Inventors: Donald Harold Ashmus, William Wirt Rankin, Andrew Tainter Walter