Patents by Inventor G. Fredrick Hutter

G. Fredrick Hutter 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).

  • Rosin derivatives used as dispersants
    Patent number: RE32411
    Abstract: High-solids pigment concentrates are disclosed containing a novel dispersing agent formed by reacting a poly (lower alkylene) imine, having molecular weight of 1,000 to 15,000 with a .[.polyester.]. .Iadd.composition containing free carboxylic acid groups said composition .Iaddend.comprising .[.the esterification product of.]. .Iadd.a low molecular weight composition formed by heating .Iaddend.hydroxystearic acid, or its oligomer, with tall oil rosin.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: May 5, 1987
    Assignee: BASF-Inmont Division
    Inventor: G. Fredrick Hutter