Patents by Inventor Rensheng Xu

Rensheng Xu 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).

  • Ester prodrugs of prostratin and related phorbol compounds
    Patent number: 8431612
    Abstract: The present disclosure provides analogs and derivatives of phorbol compounds for the treatment of viral infections, neoplastic diseases, inflammatory reactions, and use as analgesics.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: April 30, 2013
    Assignee: Salvia Sciences, Inc.
    Inventors: Rensheng Xu, Weiman Zhao, Chun Jiang
  • Methods for isolation of triptolide compounds from
    Patent number: 8048914
    Abstract: Methods for extraction, isolation, and purification of therapeutically useful compounds from Tripterygium wilfordii are described. Extraction steps employing aqueous base and a hydrocarbon solvent, respectively, are found to increase the efficiency of the process and reduce the amount of material that must be removed by chromatography.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: November 1, 2011
    Assignee: Pharmagenesis, Inc.
    Inventors: Jinhua An, Rensheng Xu, John H. Musser
  • Ester Prodrugs of Prostratin and Related Phorbol Compounds
    Publication number: 20110251421
    Abstract: The present disclosure provides analogs and derivatives of phorbol compounds for the treatment of viral infections, neoplastic diseases, inflammatory reactions, and use as analgesics.
    Type: Application
    Filed: June 21, 2011
    Publication date: October 13, 2011
    Applicant: SALVIA SCIENCES, INC.
    Inventors: Rensheng Xu, Weimin Zhao, Chun Jiang
  • Ester prodrugs of prostratin and related phorbol compounds
    Patent number: 8022103
    Abstract: Ester prodrugs of phorbol compounds for the treatment of viral infections, neoplastic diseases, inflammatory reactions, and use as analgesics, wherein the phorbol compounds are derivatized with a -x-o-c(o)-R? group linked to the 6-carbon of the phorbol residue.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: September 20, 2011
    Assignee: Salvia Sciences, Inc.
    Inventors: Rensheng Xu, Weimin Zhao, Chun Jiang
  • ESTER PRODRUGS OF PROSTRATIN AND RELATED PHORBOL COMPOUNDS
    Publication number: 20090163587
    Abstract: Ester prodrugs of phorbol compounds for the treatment of viral infections, neoplastic diseases, inflammatory reactions, and use as analgesics, wherein the phorbol compounds are derivatized with a -x-o-c(o)-R? group linked to the 6-carbon of the phorbol residue.
    Type: Application
    Filed: July 13, 2006
    Publication date: June 25, 2009
    Applicant: Salvia Sciences, Inc.
    Inventors: Rensheng Xu, Weimin Zhao, Chun Jiang
  • Methods For Isolation Of Triptolide Compounds From Tripterygium WilfordII
    Publication number: 20070282114
    Abstract: Methods for extraction, isolation, and purification of therapeutically useful compounds from Tripterygium wilfordii are described. Extraction steps employing aqueous base and a hydrocarbon solvent, respectively, are found to increase the efficiency of the process and reduce the amount of material that must be removed by chromatography.
    Type: Application
    Filed: February 7, 2005
    Publication date: December 6, 2007
    Inventors: Jinhua An, Rensheng Xu, John Musser