Patents by Inventor Robert E. Lipsey

Robert E. Lipsey 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).

  • Compressor for expressing the contents of tubes
    Patent number: 5131567
    Abstract: A tube compressor for expressing the contents of collapsible but not permanently deformable tubes is provided having upper and lower tube compressing members which can be subjected to counter-rotational movement to move the compressing members along the length of the tube to be compressed while confirming the contents of the tube to the area between the compressing members and the opening of the tube.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: July 21, 1992
    Inventor: Robert E. Lipsey