Patents by Inventor Lambertus A. Van Der Groep

Lambertus A. Van Der Groep 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).

  • Polymer composition, a process for producing a polymer composition, and the use of such a polymer composition
    Patent number: 4997880
    Abstract: This invention relates to a polymer composition comprising(a) 30-70 parts by weight of one or more ethylene-propylenediene rubbers,(b) 30-70 parts by weight of one or more ethylene-vinyl acetate copolymers with a vinyl acetate content of 18-40% by weight, and(c) 1-25 parts by weight of one or more other polymers.The composition can be used with advantage, among other purposes for improving the miscibility of synthetic resins.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: March 5, 1991
    Inventor: Lambertus A. Van Der Groep
  • Polymer composition, a process for producing a polymer composition, and the use of such a polymer composition
    Patent number: 4877827
    Abstract: This invention relates to a polymer composition comprising(a) 30-70 parts by weight of one or more ethylene-propylene-diene rubbers,(b) 30-70 parts by weight of one or more ethylene-vinyl acetate copolymers with a vinyl acetate content of 18-40% by weight, and(c) 1-25 parts by weight of one or more other polymers.The composition can be used with advantage, among other purposes for improving the miscibility of synthetic resins.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: October 31, 1989
    Inventor: Lambertus A. Van Der Groep