Patents by Inventor Hideki Tosaki

Hideki Tosaki 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 method for rigid polyurethane foam
    Patent number: 6960618
    Abstract: The present invention relates to a preparation method for low-density polyurethane foam excelling in the flame retardance and the dimensional stability, wherein rigid polyurethane foam having the average value for the ratio of lengthwise direction diameter/cross direction diameter of cells being 1.0 to 1.4 and the density of 20 to 40 kg/m3 is prepared by combining, as blowing agent, carbon dioxide generated in the reaction between water and polyisocyanate and carbon dioxide under supercritical state, subcritical state or liquid state, and by adding said water and said carbon dioxide under liquid state into said polyol component prior to mixing the polyisocyanate component and the polyol component, and to rigid polyurethane foam obtained by said method.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: November 1, 2005
    Assignee: Achilles Corporation
    Inventors: Yoshiyuki Ohnuma, Junichiro Mori, Hideki Tosaki
  • Preparation method for rigid polyurethane foam
    Publication number: 20040054022
    Abstract: The present invention relates to a preparation method for low-density polyurethane foam excelling in the flame retardance and the dimensional stability, wherein rigid polyurethane foam having the average value for the ratio of lengthwise direction diameter/cross direction diameter of cells being 1.0 to 1.4 and the density of 20 to 40 kg/m3 is prepared by combining, as blowing agent, carbon dioxide generated in the reaction between water and polyisocyanate and carbon dioxide under supercritical state, subcritical state or liquid state, and by adding said water and said carbon dioxide under liquid state into said polyol component prior to mixing the polyisocyanate component and the polyol component, and to rigid polyurethane foam obtained by said method.
    Type: Application
    Filed: August 25, 2003
    Publication date: March 18, 2004
    Applicant: Achilles Corporation
    Inventors: Yoshiyuki Ohnuma, Junichiro Mori, Hideki Tosaki