Patents by Inventor Matthijs van den Engh

Matthijs van den Engh 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).

  • Alkylene oxide adducts and polyurethane foams prepared therefrom
    Patent number: 5137934
    Abstract: This invention relates to alkylene oxide adducts prepared by alkoxylating an initiator, containing polymerized ethylene oxide, with a C.sub.3 or higher alkylene oxide, and polyurethane foams prepared therefrom. The invention offers the advantage of preparing alkylene oxide adducts and polyurethane foams with acceptable properties, where the availability or the possibility of conducting an alkoxylation reaction with ethylene oxide is restricted or not at all feasible.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: August 11, 1992
    Assignee: The Dow Chemical Company
    Inventors: David J. Williamson, Matthijs van den Engh