Patents by Inventor Susan H. Bates

Susan H. Bates 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).

  • Melt-stable, pigmented polycarbonate composition
    Patent number: 5405892
    Abstract: A melt-stable, pigmented thermoplastic molding composition is disclosed. Accordingly, to the composition which contains polycarbonate resin and pigment there is imparted an improved level of melt stability upon the incorporation therewith of an additive amount of a melt stabilizer conforming to ##STR1## where R.sub.1, R.sub.2, R.sub.3 and n are defined. In an additional embodiment the invention relates to a color concentrate containing polycarbonate resin, up to 30% of a pigment and an effective amount of said stabilizer.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: April 11, 1995
    Assignee: Miles Inc.
    Inventors: Sivaram Krishnan, James B. Johnson, Susan H. Bates, Edward M. Anderson