Patents by Inventor George R. Kriek

George R. Kriek 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).

  • Thermoplastic polyester compositions having improved release properties
    Patent number: 4762871
    Abstract: A reinforced, flame retardant molding composition based on polyalkylene terephthalate were found to be imparted an improved level of mold release properties upon the incorporation therein of a sufficient amount of a compound conforming to the structure of ##STR1## wherein R is a hydrocarbon derivative of a polyhydric alcohol preferably ethylene glycol, glycerol or pentaerythritol, R.sub.1 is hydrogen or a lower alkyl, n is about 10 to 30 and x is 2, 3 or 4.
    Type: Grant
    Filed: January 21, 1987
    Date of Patent: August 9, 1988
    Assignee: Mobay Corporation
    Inventor: George R. Kriek
  • Flame retardant polyethylene terephthalate compositions
    Patent number: 4732922
    Abstract: Flame resistant, reinforced thermoplastic molding compositions based on polyethylene terephthalate resins were found to have a lowered tendency to drip during burning upon the addition thereto of a sufficient amount of a particular ionic elastomer. The addition of the drip suppressant in accordance with the invention does not compromise the physical and mechanical properties of the composition.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: March 22, 1988
    Assignee: Mobay Corporation
    Inventors: George R. Kriek, Mark W. Witman
  • Thermoplastic polyester molding composition having an improved impact performance
    Patent number: 4542177
    Abstract: The invention relates to a thermoplastic molding composition comprising a blend of a thermoplastic polyester and a reinforcing amount of a reinforcing agent. An improvement in the impact performance of the composition is disclosed to result upon the incorporation therewith of a blocked (end-capped) polyisocyanate prepolymer.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: September 17, 1985
    Assignee: Mobay Chemical Corporation
    Inventors: George R. Kriek, James Y. J. Chung, Gerard E. Reinert, Dieter Neuray