Patents by Inventor Liyou Han

Liyou Han 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).

  • Phosphonic acid diester derivative and method for producing thereof
    Patent number: 8129557
    Abstract: A phosphonic acid diester derivative represented by the following general formula (1): wherein at least one of R1 and R2 denotes a leaving group.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: March 6, 2012
    Inventors: Jun Hiratake, Kanzo Sakata, Liyou Han
  • PHOSPHONIC ACID DIESTER DERIVATIVE AND METHOD FOR PRODUCING THEREOF
    Publication number: 20090163725
    Abstract: A phosphonic acid diester derivative represented by the following general formula (1): wherein at least one of R1 and R2 denotes a leaving group.
    Type: Application
    Filed: November 30, 2006
    Publication date: June 25, 2009
    Inventors: Jun Hiratake, Kanzo Sakata, Liyou Han