Patents by Inventor Adam C. T. Hsu

Adam C. T. Hsu 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).

  • Halopropargyl compounds, compositions, uses and processes of preparation
    Patent number: 5391561
    Abstract: Compounds of the formula ##STR1## wherein A is selected from the group consisting of hydrogen, alkyl, aryl, and heterocyclic;Y and Z are independently selected from the group consisting of O, S, and N--R;R is selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted phenyl, and substituted or unsubstituted heterocyclic; andX is selected from the group consisting of I and Br, are diclosed to useful as antimicrobials.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: February 21, 1995
    Assignee: Rohm and Haas Company
    Inventor: Adam C.-T. Hsu
  • N-iodopropargyl hydantoin compounds, compositions, preparation, and use as antimicrobial agents
    Patent number: 5346913
    Abstract: N-Iodopropargyl hydantoin compounds, methods of preparing, compositions comprising, and methods of use as antimicrobials and antifungal agents in a variety of applications.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: September 13, 1994
    Assignee: Rohm and Haas Company
    Inventors: Adam C. T. Hsu, Steven H. Shaber, Enrique L. Michelotti
  • Preparation of halo substituted isothiazolones
    Patent number: 4861896
    Abstract: This invention relates to an improved preparation of halo substituted isothiazolones by a single-step synthesis. The products are useful as biocides.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: August 29, 1989
    Assignee: Rohm and Haas Company
    Inventors: Adam C. T. Hsu, Geore M. Lein, Jr.