Patents by Inventor Chwang-Siek Pak

Chwang-Siek Pak 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).

  • Fungicidial compounds having a fluorovinyloxphyenyl moiety and process for the preparation thereof
    Patent number: 6444850
    Abstract: A fungicidal compound of formula (I) having a fluorovinyloxyphenyl moiety and stereoisomers thereof are useful for protecting crops from fungal diseases: wherein: X is CH or N; Y is O or S; Z is O or NH; R1 is hydrogen or CF3; and R2 is hydrogen, a C1-10 alkyl, naphthyl, thiophenyl or a phenyl group optionally carrying one or more substituents selected from the group consisting of C1-6 alkyl, halogen-substituted C1-6 alkyl, C1-6 alkoxy, phenoxy, halogen, and methylenedioxy radicals.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: September 3, 2002
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Chwang-Siek Pak, Bum-Tae Kim, No-Kyun Park, Gyung-Ja Choi, Heung-Tae Kim
  • Antifungal azole derivatives having a fluorinated vinyl group and process for preparing same
    Patent number: 6376497
    Abstract: An antifungal compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein: X is CH or N; Y is O, R1 and R2 are each independently F or Cl; R3 is a thiophenyl, naphthyl, or phenyl group, the phenyl group being optionally substituted with one or more substituents selected from the group consisting of C1-4 alkyl, C1-4 haloalkyl, C1-4 alkoxy, methylenedioxy and halogen; and R4 is H or trifluoromethyl.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: April 23, 2002
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Bum-Tae Kim, Sun-Young Han, Chwang-Siek Pak