Patents by Inventor Chung Neng Wu

Chung Neng Wu 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).

  • Method for producing a flame retardant polycarbonate resin composition
    Patent number: 6833397
    Abstract: Disclosed is a method for producing a flame retardant polycarbonate resin composition by using a screw extruder, which comprises extruding a resin component (mainly comprising a polycarbonate) and an organic phosphorus compound having an acid value of not more than 0.1 mg KOH/g while kneading, wherein the temperature of the resin component in the extruder is not higher than 300° C., and the residence time of the resin component in the extruder is not more than 40 seconds.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: December 21, 2004
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Akira Miyamoto, Kazuhiro Shibuya, Hiroshi Hachiya, Chung Neng Wu, Wen-Yi Su
  • Method for producing a flame retardant polycarbonate resin composition
    Publication number: 20020060378
    Abstract: Disclosed is a method for producing a flame retardant polycarbonate resin composition by using a screw extruder, which comprises extruding a resin component (mainly comprising a polycarbonate) and an organic phosphorus compound having an acid value of not more than 0.1 mg KOH/g while kneading, wherein the temperature of the resin component in the extruder is not higher than 300° C., and the residence time of the resin component in the extruder is not more than 40 seconds.
    Type: Application
    Filed: September 7, 2001
    Publication date: May 23, 2002
    Inventors: Akira Miyamoto, Kazuhiro Shibuya, Hiroshi Hachiya, Chung Neng Wu, Wen-Yi Su