Patents by Inventor Sun M. Chen

Sun M. Chen 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).

  • Heterocyclic anilines
    Patent number: 4402728
    Abstract: This application discloses compounds of the structural formula: ##STR1## wherein each X is independently selected from the group consisting of oxygen and sulfur; m is 0 or 1; R is alkyl. Each R.sup.1 is independently selected from the group consisting of hydrogen and alkyl. Y is selected from the group consisting of alkyl and ##STR2## wherein each Z is independently selected from the group consisting of hydrogen and alkyl.These compounds are particularly useful as pre-emergence herbicides.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: September 6, 1983
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Sun M. Chen