Patents by Inventor Kevin Leonard Tays

Kevin Leonard Tays 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).

  • Publication number: 20030105102
    Abstract: Compounds, compositions containing compounds, methods of sing compounds, and processes of making compounds, of formula I containing at least one ring nitrogen: 1
    Type: Application
    Filed: April 1, 2002
    Publication date: June 5, 2003
    Applicant: Guilford Pharmaceuticals Inc.
    Inventors: Jia-He Li, Kevin Leonard Tays, Jie Zhang
  • Patent number: 6387902
    Abstract: This invention relates to compounds, pharmaceutical compositions, and methods of using compounds of the formula: wherein R1-R9 and Z are independently. hydrogen, hydroxy, halo, haloalkyl, thiocarbonyl, cyano, nitro, amino, imino, alkylamino, aminoalkyl, sulfhydryl, thioalkyl, alkylthio, sulfonyl, alkylsulfonyl, C1-C9 straight or branched chain alkyl, C2-C9 straight or branched chain alkenyl, C2-C9 straight or branched chain alkynyl, C1-C6 straight or branched chain alkoxy, C2-C6 straight or branched chain alkenoxy, C2-C6 straight or branched chain alkynoxy, aryl, carbocycle, heterocycle, aralkyl, alkylaryl, alkylaryloxy, aryloxy, aralkyloxy, aralkylsulfonyl, aralkylamino, arylamino, arylazo, arylthio, or aralkylthio; or Z is wherein U is C or N, and R7 and R8 are defined above; and X and Y are independently aryl, carbocycle, or heterocycle.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: May 14, 2002
    Assignee: Guilford Pharmaceuticals, Inc.
    Inventors: Jie Zhang, Kevin Leonard Tays, Jia-He Li
  • Publication number: 20020022636
    Abstract: Compounds, compositions containing compounds, methods of using compounds, and processes of making compounds, of formula I containing at least one ring nitrogen: 1
    Type: Application
    Filed: September 1, 1998
    Publication date: February 21, 2002
    Inventors: JIA-HE LI, KEVIN LEONARD TAYS, JIE ZHANG