Patents by Inventor Johan Theon

Johan Theon 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).

  • Polyurethane and urethane-modified isocyanurate foams and a polyol composition useful in their preparation
    Patent number: 4607064
    Abstract: Isocyanate-derived foams are prepared from an isocyanate, catalyst, blowing agent, foam stabilizing surfactant and at least two active hydrogen-containing compounds wherein one of the active hydrogen-containing compounds is an alkylene oxide polymer having an equivalent of at least 300 and being composed of at least about 10 weight percent, based on a total weight of the polymerized alkylene oxide in the polymer, of a polymerized ethylene oxide.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: August 19, 1986
    Assignee: The Dow Chemical Company
    Inventors: Ernst Kuhn, Jelle D. Boer, Johan Theon