Patents Represented by Attorney T. Y. Cheng

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  • Mannich-base hydroxamic acid prodrugs, compositions and use
    Patent number: 4412994
    Abstract: Novel prodrug forms of known non-steroidal anti-inflammatory agents are disclosed, said prodrugs having the structural formula ##STR1##
    Type: Grant
    Filed: May 28, 1982
    Date of Patent: November 1, 1983
    Assignee: INTERx Research Corporation
    Inventors: Kenneth B. Sloan, Roy Little
  • E. coli enterotoxin vaccine for veterinary and human use
    Patent number: 4285931
    Abstract: A vaccine against E. coli caused diarrhea is prepared from an isolate of the homogeneous heat-labile enterotoxin of human strain MB3353 of Escherichia coli, ATCC 31361, or of the porcine strain MB3708, ATCC 31362. The toxin, which is a protein, is a low molecular weight species of 10,000-13,000.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: August 25, 1981
    Assignee: Merck & Co., Inc.
    Inventors: Guadalupe A. Limjuco, Yashwant D. Karkhanis, Dennis J. Carlo