Patents by Inventor Chen Changping

Chen Changping 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).

  • Masterbatch and polymer composition
    Patent number: 8232348
    Abstract: The present invention relates to a method of preparing a biodegradable polymer composition, said method comprising melt mixing a first biodegradable polyester and a masterbatch, wherein said masterbatch has been formed separately by melt mixing in the presence of a transesterification catalyst a polysaccharide, a second biodegradable polyester and a biodegradable polymer having pendant carboxylic acid groups.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: July 31, 2012
    Assignee: Biograde (Hong Kong) Pty Ltd.
    Inventor: Chen Changping
  • COMPOSITIONS COMPRISING THERMOPLASTIC STARCH
    Publication number: 20120022188
    Abstract: The invention relates to a composition comprising very low density polyethylene having a density of less than 0.905 g/cm3, ethylene acrylic acid copolymer and thermoplastic starch and/or the constituent components thereof.
    Type: Application
    Filed: July 31, 2009
    Publication date: January 26, 2012
    Applicant: Tristano Pty Ltd.
    Inventors: Chen Changping, John Scheirs
  • Masterbatch and polymer composition
    Patent number: 8067485
    Abstract: The present invention relates to a method of preparing a biodegradable polymer composition, said method comprising melt mixing a first biodegradable polyester and a masterbatch, wherein said masterbatch has been formed separately by melt mixing in the presence of a transesterification catalyst a polysaccharide, a second biodegradable polyester and a biodegradable polymer having pendant carboxylic acid groups.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: November 29, 2011
    Assignee: Biograde (Hong Kong) Pty Ltd
    Inventor: Chen Changping
  • MASTERBATCH AND POLYMER COMPOSITION
    Publication number: 20090312456
    Abstract: The present invention relates to a method of preparing a biodegradable polymer composition, said method comprising melt mixing a first biodegradable polyester and a masterbatch, wherein said masterbatch has been formed separately by melt mixing in the presence of a transesterification catalyst a polysaccharide, a second biodegradable polyester and a biodegradable polymer having pendant carboxylic acid groups.
    Type: Application
    Filed: July 24, 2007
    Publication date: December 17, 2009
    Applicant: Biograde (Hong Kong) Pty Ltd
    Inventor: Chen Changping