Patents by Inventor Lev Koller

Lev Koller 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).

  • Interior automotive parts formed from rigid copolyester blends mixed with a low molecular weight copolyester salt compatibilizer
    Patent number: 6517948
    Abstract: Polyester and copolyester blends are compatibilized by mechanical addition therewith effective compatibilizing amounts of a non-volatile, solid, low molecular weight copolymer salt of ethylene, acrylic acid, and calcium ion. Such ternary blends are homogeneous as indicated by the increase in tensile impact strength and hardness of the binary polyester and copolyester blends.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: February 11, 2003
    Inventors: Frank Grant, Lev Koller