Patents by Inventor Robert C. Koestler

Robert C. Koestler 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).

  • Microencapsulated trifluralin
    Patent number: 4360376
    Abstract: Aqueous dispersions of microcapsules of an organic solvent solution of trifluoro-2,6-dinitro-N,N-dialkyl-p-toluidine wherein said microcapsules are formed with a polycondensate wall are disclosed herein to provide improved herbicidal compositions especially for large scale application to crop producing areas.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: November 23, 1982
    Assignee: Pennwalt Corporation
    Inventor: Robert C. Koestler