Patents by Inventor Jae Wook Ryu

Jae Wook Ryu 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).

  • Pyridine sulfonyl urea derivatives
    Patent number: 5461026
    Abstract: The present invention relates to novel pyridinesulfonylurea derivatives, having a herbicidal activity, which is described in the following structure of general formula (I) ##STR1## wherein, Q is Q-1, Q-2, Q-3 or Q-4 as follows; ##STR2## E is single bond or CH.sub.2 R.sup.2 is C.sub.1 -C.sub.6 alkyl substituted with 1 to 3 halogens;R.sup.1, R.sup.3, W and A are defined in the claims; and these may be an agriculturally suitable salt.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 24, 1995
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Dae-Whang Kim, Hae Sung Chang, Jae Wook Ryu, In Ho Jo
  • S-(N-alkoxycarbonyl, N-substituted)aminomethyl isothiourea derivative
    Patent number: 5077423
    Abstract: S-(N-alkoxycarbonyl, N-substituted)amino methyl isothiourea derivative, which is a useful intermediate for the production of 1,3,5-thiadiazine-4-one derivative, is disclosed. The above compound can be produced by reacting the carbamate compound of the formula(II) with the thiourea compound of the formula(III).
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: December 31, 1991
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Dae-Whang Kim, Sung-Yeap Hong, Jae-Wook Ryu, Jae-Chun Woo