Patents by Inventor Elmer A. Lattner

Elmer A. Lattner 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 scrubbing stain into sheet or board material
    Patent number: 4040384
    Abstract: A method and a machine for scrubbing stain, particularly aqueous latex stain, into cellulosic sheet and board material are disclosed. The machine comprises at least one and usually a series of strip brushes designed to oscillate at varying frequencies with variable strokes to work the stain into the cellulosic substrate. In one embodiment of the invention, side brushes as well as top surface brushes are provided to stain the sides as well as the top surface of the cellulosic material.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: August 9, 1977
    Assignee: PPG Industries, Inc.
    Inventor: Elmer A. Lattner