Patents by Inventor Chin Choi-Feng

Chin Choi-Feng 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).

  • Foamed polypropylene sheet having improved appearance and a foamable polypropylene composition therefor
    Patent number: 6562447
    Abstract: Foamable polypropylene composition comprising a polypropylene resin having an D1238L melt flow rate of from about 0.5 to about 30 g/10 min, and a method for extruding rigid, foamed polypropylene sheet with improved surface appearance having a density in the range 0.4 to about 0.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: May 13, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Jesse Wu, James H. Han, Phil Jacoby, Mark C. Novak, Constantine Metaxas, Chin Choi-Feng, Ray O. Mills, Daan Feng
  • Foamed polypropylene sheet having improved appearance and a foamable polypropylene composition therefor
    Patent number: 6521675
    Abstract: Foamable polypropylene composition comprising a polypropylene resin having an D1238L melt flow rate of from about 0.5 to about 30 g/10 min, and a method for extruding rigid, foamed polypropylene sheet with improved surface appearance having a density in the range 0.4 to about 0.8 g/cm3.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: February 18, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Jesse Wu, James H. Han, Phil Jacoby, Mark C. Novak, Constantine Metaxas, Chin Choi-Feng, Ray O. Mills
  • Foamed polypropylene sheet having improved appearance and a foamable polypropylene composition therefor
    Publication number: 20020035164
    Abstract: Foamable polypropylene composition comprising a polypropylene resin having an D1238L melt flow rate of from about 0.5 to about 30 g/10 min, and a method for extruding rigid, foamed polypropylene sheet with improved surface appearance having a density in the range 0.4 to about 0.8 g/cm3.
    Type: Application
    Filed: September 25, 2001
    Publication date: March 21, 2002
    Inventors: Jesse Wu, James H. Han, Phil Jacoby, Mark C. Novak, Constantine Metaxas, Chin Choi-Feng, Ray O. Mills, Daan Feng