Patents by Inventor Arie Kramer

Arie Kramer 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).

  • Stabilized polymer compositions comprising one or more lubricating additives
    Patent number: H1652
    Abstract: It is herein disclosed a composition comprising a major amount of polymers of carbon monoxide and one or more ethylenically unsaturated compounds and a minor amount of one or more external lubricating additives having an average molecular weight of at least 500. The composition may further comprise an internal lubricating additive. The inventive compositions have and exhibit improved stability properties.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: June 3, 1997
    Assignee: Shell Oil Company
    Inventors: Hendrik G.-J. Kormelink, Arie Kramer