Patents by Inventor Jia-Shuai Lee

Jia-Shuai Lee 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).

  • Di-and tri-peptide mimetic compounds for Parkinson's disease
    Patent number: 5686423
    Abstract: A series of di- and tri-peptide mimetic dopamine prodrugs are synthesized in which D-phenylglycine or D-p-hydroxyphenylglycine is attached as tools for delivery of L-dopa through the intestine via the intestinal dipeptide-mediated carrier transport system. These compounds are found useful as an active ingredient for the treatment of Parkinson's disease.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: November 11, 1997
    Assignee: Department of Health, the Executive Yuan, Republic of China
    Inventors: Hui-Po Wang, Jia-Shuai Lee, Ming-Cheng Tsai, Hsiao-Hwa Lu, Oliver Yoa-Pu Hu, Wen-Lin Luo
  • Method for preparing cephalosporin derivatives
    Patent number: 5498787
    Abstract: A method for preparing cephalosporm derivatives by reacting cephalosporin alkaline metal salts with organic halide in the presence of quaternary ammonium salts catalyst is disclosed. .DELTA..sup.3 .fwdarw..DELTA..sup.2 isomerization, a side reaction commonly reported in preparation of cephalosporin derivatives was successfully eliminated. The desired .DELTA..sup.3 was obtained as a sole product in the reaction.
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: March 12, 1996
    Assignee: Standard Chemical & Pharmaceutical Co., Ltd.
    Inventors: Hui-Po Wang, Jia-Shuai Lee