Patents by Inventor Carl O. Hansen

Carl O. Hansen 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).

  • Method of selectively controlling weeds in crops of cereals
    Patent number: 4857101
    Abstract: Method for selectively controlling growth of undesirable monocotyledonous plants in an area containing growing undesirable monocotyledonous plants and an established cereal crop which comprises applying to said area an N-[2-(4(3,5-dichloro-2-pyridyloxy)phenoxy)propionyl]-(optionally alkyl substituted) isoxazolidine as described herein at a rate of application which controls growth of said undesirable plants and which does not significantly affect growth of said established cereal crop.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: August 15, 1989
    Assignee: Rohm and Haas Company
    Inventors: Vincent A. Musco, Donald E. Kelley, Carl O. Hansen
  • Safened phosphorothiolate pesticidal compositions
    Patent number: 4251523
    Abstract: Insecticidal compositions which comprise an O-ethyl S-n-propyl O-halophenyl phosphorothiolate can be safened by adding to the compositions a safening amount of toxaphene (octochlorocamphene) or DDT. These safened compositions are particularly useful in controlling insects in growing cotton crops.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: February 17, 1981
    Assignee: Rohm and Haas Company
    Inventors: Harold E. Aller, Carl O. Hansen