Patents by Inventor John L. Grover

John L. Grover 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).

  • Method for printing interlayers for laminated safety glass
    Patent number: 3973058
    Abstract: Disclosed herein is an improved printing method for tinting synthetic resin sheets used in the manufacture of laminated safety glass. The improvement comprises using an ink containing 12 to 35% by weight, based on the total weight of dye and solvent, of one or more dyes dissolved in an N-lower alkyl-pyrrolidone solvent wherein the alkyl group contains from 1 to 4 carbon atoms.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: August 3, 1976
    Assignee: Monsanto Company
    Inventors: John L. Grover, Wilson H. Power