Patents by Inventor Siong-Tern Liew

Siong-Tern Liew 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).

  • Camptothecin derivatives and uses thereof
    Patent number: 8168648
    Abstract: The present invention provides two new camptothecin derivatives, which were identified as S,R- and S,S-topotecan lactates, respectively. Both compounds have anticancer activities. Pharmaceutical compositions of the new camptothecin derivatives, and cancer therapies with the new camptothecin derivatives or their pharmaceutical compositions were also provided.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: May 1, 2012
    Assignees: Taiwan Liposome Co., Ltd., TLC Biopharmaceuticals, Inc.
    Inventors: Min-Wen Kuo, Yung-Hsu Chan, Yun-Long Tseng, Siong-Tern Liew, Keelung Hong
  • NEW CAMPTOTHECIN DERIVATIVES AND USES THEREOF
    Publication number: 20100227877
    Abstract: The present invention provides two new camptothecin derivatives, which were identified as S,R- and S,S-topotecan lactates, respectively. Both compounds have anticancer activities. Pharmaceutical compositions of the new camptothecin derivatives, and cancer therapies with the new camptothecin derivatives or their pharmaceutical compositions were also provided.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 9, 2010
    Applicants: Taiwan Liposome Co. Ltd., TLC Biopharmaceuticals, Inc.
    Inventors: Min-Wen Kuo, Yung-Hsu Chan, Yun-Long Tseng, Siong-Tern Liew, Keelung Hong