Patents by Inventor Lawrence E. Coombs

Lawrence E. Coombs 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).

  • Low molecular weight polyester or polyamide pigment dispersing composition and color concentrate for the manufacture of colored polymers
    Patent number: 6096822
    Abstract: The invention provides low molecular weight polyesters and polyamides useful for flushing wet pigments and manufacturing color concentrates. More specifically, the compositions of the invention are effective for flushing wet pigments, producing pigment dispersions and then producing colored polymers with the pigment dispersions.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: August 1, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Manfred K. Seven, Lawrence E. Coombs, Vincent Clarke, Joseph Wrozina, Levente L. Koller, Charles F. Lences