Patents by Inventor Maritta Lezius

Maritta Lezius 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).

  • Preparation of recyclate polyols
    Patent number: 5556889
    Abstract: The invention relates to a process for the preparation of recyclate polyols by reacting rigid polyurethane foam with short-chain hydroxyl-containing compounds, which comprises adding at least one epoxidized native fatty oil to the reaction mixture after glycolysis at a temperature from 10.degree. to 80.degree. C. below the glycolysis temperature.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: September 17, 1996
    Assignee: BASF Schwarzheide GmbH
    Inventors: Bernhard Naber, Maritta Lezius