Patents by Inventor Yujiang Fan

Yujiang Fan 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 recovering lactide from polylactic acid or derivative thereof
    Patent number: 7557224
    Abstract: To provide an efficient method for recovering and producing lactide having high optical purity by depolymerizing a polylactic acid or derivative thereof in order to carry out chemical recycling of the polylactic acid or derivative thereof or of a resin composition comprising same, wherein a mixture of a polylactic acid or derivative thereof and aluminum hydroxide is thermally decomposed at a temperature in a range from at least the melting temperature of the polylactic acid or derivative thereof to no greater than 320° C., thus recovering lactide.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: July 7, 2009
    Assignees: Kyushu Institute of Technology, Kitakyushu Foundation for the Advancement of Industry, Science and Technology
    Inventors: Haruo Nishida, Yujiang Fan, Yoshihito Shirai
  • Method for Recovering Lactide from Polylactic Acid or Derivative Thereof
    Publication number: 20080004454
    Abstract: To provide an efficient method for recovering and producing lactide having high optical purity by depolymerizing a polylactic acid or derivative thereof in order to carry out chemical recycling of the polylactic acid or derivative thereof or of a resin composition comprising same, wherein a mixture of a polylactic acid or derivative thereof and aluminum hydroxide is thermally decomposed at a temperature in a range from at least the melting temperature of the polylactic acid or derivative thereof to no greater than 320° C., thus recovering lactide.
    Type: Application
    Filed: April 25, 2005
    Publication date: January 3, 2008
    Applicants: KYUSHU INSTITUTE OF TECHNOLOGY, KITAKYUSHU FOUNDATION FOR THE ADVANCEMENT OF INDUS, KINKI UNIVERSITY
    Inventors: Haruo Nishida, Yujiang Fan, Yoshihito Shirai