Patents by Inventor Jean C. Parron

Jean C. Parron 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).

  • Process for preparation of substituted phenylureas
    Patent number: 4814499
    Abstract: Process for preparing a substituted phenylurea.A suitably substituted aniline, excess urea in a mole ratio of at least 1.1 with respect to the aniline, and a secondary amine are reacted simultaneously in a non-hydroxyl-containing organic solvent at a temperature of 130.degree. to 250.degree. C., with removal of ammonia as it forms.The phenylureas obtained are used as herbicides.
    Type: Grant
    Filed: February 7, 1986
    Date of Patent: March 21, 1989
    Assignee: Rhone-Poulenc Agrochimie
    Inventor: Jean C. Parron