Patents Represented by Attorney Donald W. Peterson

Find this attorney in the Justia Lawyer Directory

  • Herbicidal use of carboxyalkyl ester of N-phosphonomethyl glycine
    Patent number: 3971648
    Abstract: Carboxyalkyl esters of N-phosphonomethyl glycine and their salts and a process for their preparation are described. These esters and salts are useful as contact herbicides.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: July 27, 1976
    Assignee: Monsanto Company
    Inventors: John E. Franz, Hans L. Nufer
  • N-(perfluoroacyl)-N-phosphonomethyl glycine compounds, method of preparing same
    Patent number: 3970695
    Abstract: N-(perfluoroacyl)-N-phosphonomethyl glycine compounds are prepared by the reaction of N-phosphonomethyl glycine with perfluoroacyl anhydrides employing an excess of the perfluoroalkanoic acid as the solvent. The N-(perfluoroacyl)-N-phosphonomethyl glycine compounds are useful as post-emergent herbicides.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: July 20, 1976
    Assignee: Monsanto Company
    Inventor: Melvin L. Rueppel
  • Process for producing N-phosphonomethyl glycine
    Patent number: 3969398
    Abstract: A process for the production of N-phosphonomethyl glycine by the oxidation of N-phosphonomethylimino diacetic acid utilizing a molecular oxygen-containing gas as the oxidant in the presence of a catalyst consisting essentially of activated carbon. The N-phosphonomethyl glycine produced is useful as a herbicide or plant growth regulant.
    Type: Grant
    Filed: May 1, 1974
    Date of Patent: July 13, 1976
    Assignee: Monsanto Company
    Inventor: Arnold Hershman
  • Method for increasing the sucrose content of growing plants
    Patent number: 3961934
    Abstract: The 12001974 sucrose content of sugar cane plants is increased by treating the plants, prior to harvest, with N-acetyl or chloroacetyl derivatives of aminomethylenephosphonic acid, and certain esters and salts thereof.
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: June 8, 1976
    Assignee: Monsanto Company
    Inventor: Kenneth Wayne Ratts
  • Herbicide for use in transplanted rice
    Patent number: 3955959
    Abstract: N-(butoxymethyl)-6'-tert-butyl-2-chloro-o-acetotoluidide is used as a broad-spectrum weed control herbicide while providing a high degree of crop safety toward transplanted rice cultures.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: May 11, 1976
    Assignee: Monsanto Company
    Inventor: Horace Dean Skipper
  • .alpha.-Cyano-.alpha.-dialkylphosphonato acetanilde herbicides
    Patent number: 3955958
    Abstract: .alpha.-cyano-.alpha.-dialkylphosphonato acetanilides are prepared by reacting an .alpha.-cyano-.alpha.-dialkylphosphonate carbanion with an aromatic isocyanate or isothiocyanate. The said carbanion may be generated in situ by the reaction of an alkali metal or reactive compound thereof with an .alpha.-cyano-.alpha.-dialkylphosphonato acetanilide.Compounds within the scope of the invention described herein are pesticidally active, e.g., as herbicides.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: May 11, 1976
    Assignee: Monsanto Company
    Inventors: William D. Dixon, Maureen E. Becker
  • Process for producing N-phosphonomethyl glycine
    Patent number: 3954848
    Abstract: N-phosphonomethyl glycine is produced by the oxidation of N-(phosphonomethyl) iminodiacetic acid in the presence of an acid. N-phosphonomethyl glycine is useful as a herbicide.
    Type: Grant
    Filed: May 31, 1972
    Date of Patent: May 4, 1976
    Assignee: Monsanto Company
    Inventor: John E. Franz
  • Process for producing N-phosphonomethyl glycine
    Patent number: 3950402
    Abstract: N-phosphonomethyl glycine is produced by the oxidation of N-(phosphonomethyl) iminodiacetic acid. N-(Phosphonomethyl) iminodiacetic acid is heated to an elevated temperature in an aqueous medium and an oxidizing agent (H.sub.2 O.sub.2, air plus a catalyst such as platinum, palladium, rhodium, etc.) added to oxidize the N-(phosphonomethyl) iminodiacetic acid to N-phosphonomethyl glycine, which is recovered by crystallization.
    Type: Grant
    Filed: February 16, 1973
    Date of Patent: April 13, 1976
    Assignee: Monsanto Company
    Inventor: John E. Franz
  • Hydroxyalkyl esters of N-phosphonomethyl glycine
    Patent number: 3948975
    Abstract: Hydroxyalkyl esters of N-phosphonomethyl glycine and their salts and a process for their preparation are described. These esters and salts are useful as contact herbicides.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: April 6, 1976
    Assignee: Monsanto Company
    Inventor: John E. Franz
  • N-hydroxy-N-phosphonomethylglycinates
    Patent number: 3933946
    Abstract: This disclosure relates to certain novel triesters of N-hydroxy-N-phosphonomethylglycine which are useful as herbicides for undesired plants and as growth regulators for desired plants.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: January 20, 1976
    Assignee: Monsanto Company
    Inventor: Van Russell Gaertner