Patents by Inventor Akiko Mizutani Ushiyama

Akiko Mizutani Ushiyama 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).

  • Polyester blend compositions and biodegradable films produced therefrom
    Patent number: 7388058
    Abstract: A polyester blend composition that comprises at least two copolymers selected from certain copolymers, particularly blends of branched and linear biodegradable copolymers. Also provided is a blown film that is produced from the polyester blend composition, and a process for producing the polyester blend composition and the film. The film is biodegradable, transparent, and has excellent mechanical properties.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: June 17, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mureo Kaku, Akiko Mizutani Ushiyama, Richard Allen Hayes, Jennifer M. Schneider
  • Polyester blend compositions and biodegradable films produced therefrom
    Publication number: 20030220456
    Abstract: A polyester blend composition that comprises at least two copolymers selected from certain copolymers, particularly blends of branched and linear biodegradable copolymers. Also provided is a blown film that is produced from the polyester blend composition, and a process for producing the polyester blend composition and the film. The film is biodegradable, transparent, and has excellent mechanical properties.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 27, 2003
    Inventors: Mureo Kaku, Akiko Mizutani Ushiyama, Richard Allen Hayes, Jennifer M. Schneider