Patents by Inventor Xingchun Han

Xingchun 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).

  • Patent number: 7928233
    Abstract: There are provided compounds of the formula or a pharmaceutically acceptable salt, ester or enantiomer thereof wherein W, X, Y, V, R1 and R2 are as described herein. The compounds have utility as antiproliferative agents, especially, as anticancer agents.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: April 19, 2011
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Li Chen, Xingchun Han, Song Yang, Zhuming Zhang
  • Publication number: 20100273819
    Abstract: There are provided compounds of the formula or a pharmaceutically acceptable salt or ester thereof wherein X, Y, W, W?, V, V?, V?, R1, R2 and R3 are as herein described. The compounds have utility as antiproliferative agents, especially, as anticancer agents.
    Type: Application
    Filed: March 29, 2010
    Publication date: October 28, 2010
    Inventors: Li Chen, Xingchun Han, Song Yang, Zhuming Zhang
  • Patent number: 7776875
    Abstract: There are provided compounds of the formula and pharmaceutically acceptable salts and esters and enantiomers thereof wherein W, X, X?, Y, V, V?, A, B and R are as described herein. The compounds have utility as antiproliferative agents, especially, as anticancer agents.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: August 17, 2010
    Assignee: Hoffman-La Roche Inc.
    Inventors: Li Chen, Xingchun Han, Yun He, Song Yang, Zhuming Zhang
  • Publication number: 20100204257
    Abstract: There are provided compounds of the formula or a pharmaceutically acceptable salt, ester or enantiomer thereof wherein W, X, Y, V, R1 and R2 are as described herein. The compounds have utility as antiproliferative agents, especially, as anticancer agents.
    Type: Application
    Filed: January 12, 2010
    Publication date: August 12, 2010
    Inventors: Li Chen, Xingchun Han, Song Yang, Zhuming Zhang
  • Publication number: 20100190814
    Abstract: There are provided compounds of the formula and pharmaceutically acceptable salts and esters and enantiomers thereof wherein X, Y, V, R1, R2 and R are as described herein. The compounds have utility as antiproliferative agents, especially, as anticancer agents.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 29, 2010
    Inventors: Li Chen, Xingchun Han, Lisha Wang, Min Wang, Song Yang, Zhuming Zhang
  • Publication number: 20090163512
    Abstract: There are provided compounds of the formula and pharmaceutically acceptable salts and esters and enantiomers thereof wherein W, X, X?, Y, V, V?, A, B and R are as described herein. The compounds have utility as antiproliferative agents, especially, as anticancer agents.
    Type: Application
    Filed: November 18, 2008
    Publication date: June 25, 2009
    Inventors: Li Chen, Xingchun Han, Yun He, Song Yang, Zhuming Zhang