Patents by Inventor Dong Feng Qi

Dong Feng Qi 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: 6949523
    Abstract: This invention relates to a group of novel sapogenins, their use in anti-cancer applications, and to a process for their production. More particularly, this invention pertains to a novel group of dammarane sapogenins, PAM-120, PBM-110 and PBM-100 (the dammarance sapogenine structure is specifically clean of any sugar moieties (glycons) at any position and hydroxyl at C-20) and PAN-20 and PAN-30 (the dammarance sapogenin structure has sugar moieties but is free of hydroxyl at C-20), obtained by chemical cleavage of dammarane saponins. The invention also includes a novel application of the said sapogenins for anti-cancer treatment by using them separately or together, and/or jointly with other drugs, as well as to the process of producing these novel sapogenins. Said novel dammarane sapogenins show surprising anti-cancer effect when applied, particularly against multi-drug resistant cancers.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: September 27, 2005
    Assignee: Panagin Pharmaceuticals, Inc.
    Inventors: Dong Huang, Dong Feng Qi
  • Patent number: 6888014
    Abstract: This invention relates to a group of novel sapogenins, their use in anti-cancer applications, and to a process for their production. More particularly, this invention pertains to a novel group of dammarane sapogenins, PAM-120, PBM-110 and PBM-100 (the dammarance sapogenine structure is specifically clean of any sugar moieties (glycons) at any position and hydroxyl at C-20) and PAN-20 and PAN-30 (the dammarance sapogenin structure has sugar moieties but is free of hydroxyl at C-20), obtained by chemical cleavage of dammarane saponins. The invention also includes a novel application of the said sapogenins for anti-cancer treatment by using them separately or together, and/or jointly with other drugs, as well as to the process of producing these novel sapogenins. Said novel dammarane sapogenins show surprising anti-cancer effect when applied, particularly against multi-drug resistant cancers.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: May 3, 2005
    Assignee: PanaGin Pharmaceuticals Inc.
    Inventors: Dong Huang, Dong Feng Qi
  • Publication number: 20030092638
    Abstract: The invention provides for the use of sapogenin protopanaxadiol and/or sapogenin protopanaxatriol in synergistic combination with another cancer chemotherapeutic in pharmaceutical compositions used in methods of inhibiting the multiplication of cancer cells, and methods of treating cancer in patients, comprising administering to such patients therapeutically and synergistically effective amounts of sapogenin protopanaxadiol and/or sapogenin protopanaxatriol in combination with a chemotherapeutic selected from the group consisting of paclitaxel and mitoxantrone. The cancer cells to be treated may be multi-drug resistant. The cancer cells may, for example, be prostate cancer cells or breast cancer cells.
    Type: Application
    Filed: September 21, 2001
    Publication date: May 15, 2003
    Inventors: Dong Huang, Dong Feng Qi
  • Publication number: 20030087835
    Abstract: This invention relates to a group of novel sapogenins, their use in anti-cancer applications, and to a process for their production. More particularly, this invention pertains to a novel group of dammarane sapogenins, PAM-120, PBM-110 and PBM-100 (the dammarance sapogenine structure is specifically clean of any sugar moieties (glycons) at any position and hydroxyl at C-20) and PAN-20 and PAN-30 (the dammarance sapogenin structure has sugar moieties but is free of hydroxyl at C-20), obtained by chemical cleavage of dammarane saponins. The invention also includes a novel application of the said sapogenins for anti-cancer treatment by using them separately or together, and/or jointly with other drugs, as well as to the process of producing these novel sapogenins. Said novel dammarane sapogenins show surprising anti-cancer effect when applied, particularly against multi-drug resistant cancers.
    Type: Application
    Filed: July 24, 2001
    Publication date: May 8, 2003
    Inventors: Dong Huang, Dong Feng Qi
  • Publication number: 20030087836
    Abstract: This invention relates to a group of novel sapogenins, their use in anti-cancer applications, and to a process for their production. More particularly, this invention pertains to a novel group of dammarane sapogenins, PAM-120, PBM-110 and PBM-100 (the dammarance sapogenine structure is specifically clean of any sugar moieties (glycons) at any position and hydroxyl at C-20) and PAN-20 and PAN-30 (the dammarance sapogenin structure has sugar moieties but is free of hydroxyl at C-20), obtained by chemical cleavage of dammarane saponins. The invention also includes a novel application of the said sapogenins for anti-cancer treatment by using them separately or together, and/or jointly with other drugs, as well as to the process of producing these novel sapogenins. Said novel dammarane sapogenins show surprising anti-cancer effect when applied, particularly against multi-drug resistant cancers.
    Type: Application
    Filed: October 19, 2001
    Publication date: May 8, 2003
    Inventors: Dong Huang, Dong Feng Qi