Patents by Inventor Wen-Chih Chou

Wen-Chih 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).

  • METHOD FOR PREPARING METAL SALT OF VALPROIC ACID
    Publication number: 20110040122
    Abstract: The present invention provides a simple, safe and more efficient process for preparing metal salts of valproic acid. The process includes steps of: (i) mixing valproic acid and a metal hydroxide (either dry solid or aqueous solution) in a drier to form a reaction mixture; and (ii) removing water, which is produced during the step of mixing the valproic acid and the metal hydroxide, from the reaction mixture to obtain the desired metal salts of valproic acid.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 17, 2011
    Applicant: SCI PHARMTECH, INC.
    Inventors: Wen-Chih CHOU, Weichyun WONG, Yon-Lian WU
  • Preparation of amides and quinazoline derivatives
    Patent number: 6313293
    Abstract: The present invention relates to a process for the preparation of amides, comprising reacting amines with carboxylic acids in the presence of silicon amines. The present invention further relates to a process for the preparation of quinazoline derivatives, comprising reacting amines with carboxylic acids in the presence of silicon amines to obtain amides and contacting the resultant amides with quinazoline.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: November 6, 2001
    Assignee: Development Center for Biotechnology
    Inventors: Wen-Chih Chou, Ming-Chen Chou, Yann-Yu Lu, Shyh-Fong Chen
  • Process for preparing amides
    Patent number: 6313294
    Abstract: The present invention provides a process for preparing an amide, which comprises reacting an amine with an ester in a molten form in the absence of a solvent.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 6, 2001
    Assignee: Development Center for Biotechnology
    Inventors: Wen-Chih Chou, Chang-Wei Tan, Shyh-Fong Chen, Hao Ku