Patents by Inventor Tsai-Yung CHOU

Tsai-Yung CHOU 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).

  • Intermediate for synthesizing treprostinil diethanolamine and method for preparing the same
    Patent number: 9505704
    Abstract: The present invention relates to a method for treprostinil diethanolamine synthesis. The present invention also relates to a novel intermediate used in the method for treprostinil diethanolamine synthesis. The novel intermediate is shown in the following formula (II): wherein R1 and R2 are described in the description.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: November 29, 2016
    Assignee: EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
    Inventors: Shijay Gao, Chia-Chung Tsai, Tsai-Yung Chou, Yu-Min Chiang, Chi-Hsiang Yao
  • NOVEL INTERMEDIATE FOR SYNTHESIZING TREPROSTINIL DIETHANOLAMINE AND METHOD FOR PREPARING THE SAME
    Publication number: 20160152548
    Abstract: The present invention relates to a method for treprostinil diethanolamine synthesis. The present invention also relates to a novel intermediate used in the method for treprostinil diethanolamine synthesis. The novel intermediate is shown in the following formula (II): wherein R1 and R2 are described in the description.
    Type: Application
    Filed: November 6, 2015
    Publication date: June 2, 2016
    Inventors: Shijay GAO, Chia-Chung TSAI, Tsai-Yung CHOU, Yu-Min CHIANG, Chi-Hsiang YAO
  • METHOD OF SYNTHESIZING BEPOTASTINE OR BENZENESULFONIC ACID SALT THEREOF AND INTERMEDIATES USED THEREIN
    Publication number: 20140046068
    Abstract: The present invention relates to a novel method of synthesizing bepotastine or its benzenesulfonic acid salt and novel intermediates used therein. The present invention uses L-?-hydroxy acid for chiral resolution to form an L-?-hydroxy acid salt of a compound represented by the following formula (VII-1), so as to synthesize bepotastine or its benzenesulfonic acid salt in high optical purity.
    Type: Application
    Filed: February 4, 2013
    Publication date: February 13, 2014
    Applicant: EVERLIGHT USA, INC.
    Inventors: Tsung-Ting CHEN, Hao-Cheng YANG, Tsai-Yung CHOU, Chi-Hsiang YAO