Patents by Inventor Wan-Yin Cheng

Wan-Yin Cheng 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).

  • Crystalline forms of pemetrexed diacid and manufacturing processes therefor
    Patent number: 9765079
    Abstract: Crystalline forms of pemetrexed diacid are provided (Forms 1 and 2) which are readily produced for either laboratory-scale or industrial scale. Processes for the preparation of Forms 1 and 2 are also provided.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: September 19, 2017
    Assignee: SCINTOPHARM TAIWAN, LTD.
    Inventors: Ying-Tzu Lin, Kuan-Hsun Wang, Wei-Shuo Lo, Wen-Wei Lin, Wan-Yin Cheng
  • PROCESS OF PREPARING AMORPHOUS FORM OF IDELALISIB
    Publication number: 20170260186
    Abstract: A process for preparing an amorphous form of idelalisib comprises: (a) forming a first solution of idelalisib in a solvent; (b) adding the first solution obtained in step (a) into water to form a second solution; (c) optionally cooling the second solution obtained in step (b) and; (d) isolating the optionally cooled second solution from step (c) to provide the amorphous form of idelalisib. Mild reaction conditions are used in this process. The amorphous form of idelalisib prepared by this process is stable and does not transfer to other crystalline forms easily. This process is suitable for large scale manufacture of idelalisib at a high yield.
    Type: Application
    Filed: March 1, 2017
    Publication date: September 14, 2017
    Inventors: Tsung-Cheng Hu, Wei-Shuo Lo, Kuan-Hsun Wang, Wan-Yin Cheng
  • CRYSTALLINE FORMS OF PEMETREXED DIACID AND MANUFACTURING PROCESSES THEREFOR
    Publication number: 20170253597
    Abstract: Crystalline forms of pemetrexed diacid are provided (Forms 1 and 2) which are readily produced for either laboratory-scale or industrial scale. Processes for the preparation of Forms 1 and 2 are also provided.
    Type: Application
    Filed: May 10, 2016
    Publication date: September 7, 2017
    Inventors: Ying-Tzu Lin, Kuan-Hsun Wang, Wei-Shuo Lo, Wen-Wei Lin, Wan-Yin Cheng
  • CRYSTALLINE FORMS OF PEMETREXED DIACID AND MANUFACTURING PROCESSES THEREFOR
    Publication number: 20170121334
    Abstract: Crystalline forms of pemetrexed diacid are provided (Forms 1 and 2) which are readily produced for either laboratory-scale or industrial scale. Processes for the preparation of Forms 1 and 2 are also provided.
    Type: Application
    Filed: May 10, 2016
    Publication date: May 4, 2017
    Inventors: Ying-Tzu Lin, Kuan-Hsun Wang, Wei-Shuo Lo, Wen-Wei Lin, Wan-Yin Cheng
  • Crystalline forms of pemetrexed diacid and manufacturing processes therefor
    Patent number: 9604990
    Abstract: Crystalline forms of pemetrexed diacid are provided (Forms 1 and 2) which are readily produced for either laboratory-scale or industrial scale. Processes for the preparation of Forms 1 and 2 are also provided.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: March 28, 2017
    Assignee: SCINOPHARM TAIWAN, LTD.
    Inventors: Ying-Tzu Lin, Kuan-Hsun Wang, Wei-Shuo Lo, Wen-Wei Lin, Wan-Yin Cheng
  • CRYSTALLINE FORMS OF PEMETREXED DIACID AND MANUFACTURING PROCESSES THEREFOR
    Publication number: 20160122355
    Abstract: Crystalline forms of pemetrexed diacid are provided (Forms 1 and 2) which are readily produced for either laboratory-scale or industrial scale. Processes for the preparation of Forms 1 and 2 are also provided.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 5, 2016
    Inventors: Ying-Tzu Lin, Kuan-Hsun Wang, Wei-Shuo Lo, Wen-Wei Lin, Wan-Yin Cheng