Patents by Inventor Won J. Park

Won J. Park 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).

  • 5-(4-Hydroxyphenyl) hydantoin derivatives
    Patent number: 4440934
    Abstract: Compounds of the formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom or a 1-hydroxy lower alkyl radical and the like;R.sub.2 represents a 1-hydroxy lower alkyl radical; andX represents a hydrogen or chlorine atomhaving broad spectrum antimicrobial activity and a process for their production.
    Type: Grant
    Filed: August 26, 1982
    Date of Patent: April 3, 1984
    Assignee: Pacific Chemical Ind. Co., Ltd.
    Inventors: Sung J. Kim, Ik W. Um, Won J. Park