Patents by Inventor Howard C. Berk

Howard C. Berk 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).

  • Patent number: 5317003
    Abstract: A herbicidal composition is provided which is substantially non-irritant to the eyes and which comprises a stable aqueous concentrate solution of one or more agriculturally acceptable salts-of N-phosphonomethylglycine and a surfactant represented by the formula ##STR1## wherein R is an alkyl group having from about 6 to about 14 carbon atoms, R.sup.1 is ethyl, propyl, or a mixture of ethyl and propyl, the sum of n and m is between about 5 and about 50, R.sup.2 is an alkyl group with 1-4 carbon atoms, X is an agriculturally acceptable anion, and the weight ratio of surfactant to N-phosphonomethylglycine (expressed as the acid equivalent) is between about 1:5 and about 5:1.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: May 31, 1994
    Assignee: Monsanto Company
    Inventors: James W. Kassebaum, Howard C. Berk