Patents by Inventor Chengxia Yu

Chengxia Yu 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).

  • Liposome of irinotecan or irinotecan hydrochloride and preparation method thereof
    Patent number: 10022365
    Abstract: A liposome of irinotecan or irinotecan hydrochloride and its preparation method are disclosed. The liposome contains irinotecan or irinotecan hydrochloride, neutral phospholipid and cholesterol, wherein the weight ratio of the cholesterol to the neutral phospholipid is 1:3 to 1:5. The liposome is prepared by an ion gradient method.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 17, 2018
    Assignees: Jiangsu Hengrui Medicine Co., Ltd., Shanghai Hengrui Pharmaceutical Co., Ltd.
    Inventors: Xinyong Tong, Guofeng Lei, Chengxia Yu, Liang Chen
  • LIPOSOME OF IRINOTECAN OR IRINOTECAN HYDROCHLORIDE AND PREPARATION METHOD THEREOF
    Publication number: 20170189392
    Abstract: A liposome of irinotecan or irinotecan hydrochloride and its preparation method are disclosed. The liposome contains irinotecan or irinotecan hydrochloride, neutral phospholipid and cholesterol, wherein the weight ratio of the cholesterol to the neutral phospholipid is 1:3 to 1:5. The liposome is prepared by an ion gradient method.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 6, 2017
    Inventors: Xinyong TONG, Guofeng LEI, Chengxia YU, Liang CHEN
  • LIPOSOME OF IRINOTECAN OR ITS HYDROCHLORIDE AND PREPARATION METHOD THEREOF
    Publication number: 20120282325
    Abstract: A liposome of irinotecan or irinotecan hydrochloride and its preparation method are disclosed. The liposome contains irinotecan or irinotecan hydrochloride, neutral phospholipid and cholesterol, wherein the weight ratio of the cholesterol to the neutral phospholipid is 1:3 to 1:5. The liposome is prepared by an ion gradient method.
    Type: Application
    Filed: December 3, 2009
    Publication date: November 8, 2012
    Applicants: SHANGHAI HENGRUI PHARMACEUTICAL CO., LTD., JIANGSU HENGRUI MEDICINE CO., LTD.
    Inventors: Xinyong Tong, Guofeng Lei, Chengxia Yu, Liang Chen