Patents by Inventor Yuanfeng Tong

Yuanfeng Tong 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).

  • Inclusion complexes of pinocembrin with cyclodextrin or its derivatives
    Patent number: 9949946
    Abstract: Inclusion complexes of pinocembrin with cyclodextrin or its derivatives and their preparation are provided. The inclusion complexes can be used to make drugs.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: April 24, 2018
    Assignee: CSPC ZHONGQI PHARMACEUTICAL TECHNOLOGY (SHIJIAZHUANG) CO., LTD.
    Inventors: Song Wu, Guanhua Du, Yan Qi, Mei Gao, Qingyun Yang, Hongmei Guang, Wei Li, Yuehua Wang, Yuanfeng Tong
  • Method for resolution of a mixture of pinocembrin optical isomers, especially a pinocembrin racemate
    Patent number: 8399691
    Abstract: The present invention relates to a method for resolution of a mixture of pinocembrin optical isomers, in particular a pinocembrin racemate, using a chiral primary amine or a chiral sulfinamide. The present invention also relates to a (R)-(+)-pinocembrin obtained by the method.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 19, 2013
    Assignees: CSPC Zhongqi Pharmaceutical Technology (Shijiazhuang) Co. Ltd., Institute of Materia Medica, Chinese Academy of Medical Sciences
    Inventors: Song Wu, Guanhua Du, Yue Yuan, Qingyun Yang, Mei Gao, Yan Qi, Yuanfeng Tong, Yuehua Wang
  • Two types of crystalline of pinocembrin, their preparation and their use for manufacture of pharmaceutical compositions
    Patent number: 8399511
    Abstract: Two crystalline forms of pinocembrin of formula (I): ? and ?, their preparation and their use for manufacture of pharmaceutical compositions. There exists difference between them in bioavailability. They are used for treating and preventing cerebral ischemic diseases by protective action of neurovascular unit, and enhancing blood drug level in vivo.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: March 19, 2013
    Assignees: CSPC Zhongqi Pharmaceutical Technology (Shijiazhuang) Co., Ltd., Institute of Materia Medica, Chinese Academy of Medical Sciences
    Inventors: Guanhua Du, Yang Lv, Song Wu, Ke Wang, Ying Chang, Zhihong Yang, Yuanfeng Tong, Mei Gao
  • INCLUSION COMPLEXES OF PINOCEMBRIN WITH CYCLODEXTRIN OR ITS DERIVATIVES
    Publication number: 20110218173
    Abstract: Inclusion complexes of pinocembrin with cyclodextrin or its derivatives and their preparation are provided. The inclusion complexes can be used to make drugs.
    Type: Application
    Filed: November 11, 2008
    Publication date: September 8, 2011
    Inventors: Song Wu, Guanhua Du, Yan Qi, Mei Gao, Qingyun Yang, Hongmei Guang, Wei Li, Yuehua Wang, Yuanfeng Tong
  • TWO TYPES OF CRYSTALLINE OF PINOCEMBRIN, THEIR PREPARATION AND THEIR USE FOR MANUFACTURE OF PHARMACEUTICAL COMPOSITIONS
    Publication number: 20110213024
    Abstract: Two crystalline forms of pinocembrin of formula (I): ? and ?, their preparation and their use for manufacture of pharmaceutical compositions. There exists difference between them in bioavailability. They are used for treating and preventing cerebral ischemic diseases by protective action of neurovascular unit, and enhancing blood drug level in vivo.
    Type: Application
    Filed: November 13, 2008
    Publication date: September 1, 2011
    Applicant: CSPC Zhongqi West Road Shijazhuang
    Inventors: Guanhua Du, Yang Lv, Song Wu, Ke Wang, Ying Chang, Zhihong Yang, Yuanfeng Tong, Mei Gao
  • METHOD FOR RESOLUTION OF A MIXTURE OF PINOCEMBRIN OPTICAL ISOMERS, ESPECIALLY A PINOCEMBRIN RACEMATE
    Publication number: 20100261916
    Abstract: The present invention relates to a method for resolution of a mixture of pinocembrin optical isomers, in particular a pinocembrin racemate, using a chiral primary amine or a chiral sulfinamide. The present invention also relates to a (R)-(+)-pinocembrin obtained by the method.
    Type: Application
    Filed: November 7, 2008
    Publication date: October 14, 2010
    Applicant: CSPC Zhonggi Pharmaceutical Technology (Shijiazhuang) Co. Ltd.
    Inventors: Song Wu, Guanhua Du, Yue Yuan, Qingyun Yang, Mei Gao, Yan Qi, Yuanfeng Tong, Yuehua Wang