Patents by Inventor Donglei Liu

Donglei Liu 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).

  • 1, 8-Naphthyridine derivatives and their use to treat diabetes and related disorders
    Publication number: 20060189609
    Abstract: The invention relates generally to naphthyridine derivatives of the formula wherein one of U, X, Y and Z is nitrogen and the others are C—R, where R is hydrogen or a substituent. More specifically, the invention relates to 1,8-naphthyridine derivatives and pharmaceutical compositions containing such derivatives. Methods of the invention comprise administration of a naphthyridine derivative of the invention for the treatment of diabetes and related disorders.
    Type: Application
    Filed: April 21, 2006
    Publication date: August 24, 2006
    Applicant: Bayer Pharmaceuticals Corporation
    Inventors: Yamin Wang, William Bullock, David Gunn, Qingjie Liu, Sidney Liang, Donglei Liu, Steven Magnuson, Tindy Li, Eric Mull, Jill Wood, Ning Qi
  • 1,8-Naphthyridine derivatives and their use to treat diabetes and related disorders
    Patent number: 6900205
    Abstract: The invention relates generally to naphthyridine derivatives of the formula wherein one of U, X, Y and Z is nitrogen and the others are C—R, where R is hydrogen or a substituent. More specifically, the invention relates to 1,8-naphthyridine derivatives and pharmaceutical compositions containing such derivatives. Methods of the invention comprise administration of a naphthyridine derivative of the invention for the treatment of diabetes and related disorders.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: May 31, 2005
    Assignee: Bayer Pharmaceuticals Corporation
    Inventors: Yamin Wang, William H. Bullock, David E. Gunn, Qingjie Liu, Sidney X. Liang, Donglei Liu, Steven R. Magnuson, Tindy Li, Eric S. Mull, Jill E. Wood, Ning Qi
  • 1,8 Naphthyridine derivatives and their use to treat diabetes and related disorders
    Publication number: 20040209866
    Abstract: The invention relates generally to naphthyridine derivatives of the formula 1
    Type: Application
    Filed: April 28, 2004
    Publication date: October 21, 2004
    Applicant: Bayer Pharmaceuticals Corporation
    Inventors: Yamin Wang, William H. Bullock, David E. Gunn, Qingjie Liu, Sideny X. Liang, Donglei Liu, Steven R. Magnuson, Tindy Li, Eric S. Mull, Jill E. Wood, Ning Qi
  • 1,8-Naphthyridine derivatives and their use to treat diabetes and related disorders
    Publication number: 20040014751
    Abstract: The invention relates generally to naphthyridine derivatives of the formula 1
    Type: Application
    Filed: September 23, 2002
    Publication date: January 22, 2004
    Inventors: Yamin Wang, William H. Bullock, David E. Gunn, Qingjie Liu, Sidney X. Liang, Donglei Liu, Steven R. Magnuson, Tindy Li, Eric S. Mull, Jill E. Wood, Ning Qi