Patents by Inventor Heui C. Yang

Heui C. Yang 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).

  • 2-quinolinone derivatives
    Patent number: 5430153
    Abstract: The present invention relates to novel 2-quinolinone derivanves of the following general formula(I) useful in agriculture, especially as fungicides but also as insecticides and miticides. ##STR1## wherein, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, halogen, C.sub.1 -C.sub.10 alkyl, branched C.sub.c -C.sub.4 alkyl, C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 haloallcylthio, NO.sub.2, CN, alkoxy carbonyl, phenyl, substituted phenyl, phenoxy, substituted phenoxy, benzenesulfonyl, benzyi, substituted benzyl or morpholine;R.sub.5 is C.sub.1 -C.sub.6 alkyl, branched C.sub.3 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl, substituted phenyl, benzyl or phenylthio methyl: andX is S(O)nR.sub.6, OR.sub.9 or NAB:wherein.n is 0 or 1;R.sub.6, R.sub.9, A and B are defined within the description.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: July 4, 1995
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Chwang S. Pak, Eun B. Choi, Heui C. Yang, Gyu H. Yon, Ge H. Lee, Hyeon K. Lee, Sung K. Kim, Yeon S. Lee, Kwang W. Lee, Young R. Chung, Heung T. Kim