Patents by Inventor WEN WEI ZHAO

WEN WEI ZHAO 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).

  • Isocyanate-based foam having improved anti-yellowing properties and process for production thereof
    Patent number: 8802746
    Abstract: There is described an isocyanate-based polymer foam having improved anti-yellowing properties. The foam produced from a formulation comprising an isocyanate, a blowing agent, a first active hydrogen-containing compound and a second active hydrogen-containing compound different than the first active hydrogen-containing compound. The second active hydrogen-containing compound comprises an active hydrogen-containing phosphite compound. A process for producing such a foam is also described.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: August 12, 2014
    Assignee: Proprietect L.P.
    Inventors: Wen Wei Zhao, Mladen Vidakovic, Eugene Smeianu
  • ISOCYANATE-BASED FOAM HAVING IMPROVED ANTI-YELLOWING PROPERTIES AND PROCESS FOR PRODUCTION THEREOF
    Publication number: 20110230577
    Abstract: There is described an isocyanate-based polymer foam having improved anti-yellowing properties. The foam produced from a formulation comprising an isocyanate, a blowing agent, a first active hydrogen-containing compound and a second active hydrogen-containing compound different than the first active hydrogen-containing compound. The second active hydrogen-containing compound comprises an active hydrogen-containing phosphite compound. A process for producing such a foam is also described.
    Type: Application
    Filed: May 31, 2011
    Publication date: September 22, 2011
    Applicant: PROPRIETECT L.P.
    Inventors: WEN WEI ZHAO, MLADEN VIDAKOVIC, EUGENE SMEIANU