Patents by Inventor Robert K. Howe

Robert K. Howe 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).

  • 2-[5-ARYL-2-ISOXAZOLIN-3-YL]BENZOATES AND USE AS HERBICIDES
    Patent number: 4139366
    Abstract: The invention relates to novel herbicidal 2-[5-aryl-2-isoxazolin-3-yl]benzoates and their use as agricultural chemicals.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: February 13, 1979
    Assignee: Monsanto Company
    Inventor: Robert K. Howe
  • Oxadiazol-3-yl-benzoates as plant growth regulants
    Patent number: 4135910
    Abstract: Certain 2-[5-(aryl or substituted aryl)-1,2,4-oxadiazol-3-yl] benzoic acids, salts and esters having the formula: ##STR1## where R is hydrogen, lower alkyl and agriculturally acceptable cations and aryl is phenyl, naphthyl and phenyl substituted by one or more halogen, trifluoromethyl, lower alkyl or lower alkoxy moieties, (e.g., methyl 2-[5-(3-trifluoromethylphenyl)-1,2,4-oxadiazol-3-yl] benzoate), in a method of controlling undesirable vegetation and a method of regulating the growth of desirable plants.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: January 23, 1979
    Assignee: Monsanto Company
    Inventor: Robert K. Howe
  • 2-[3-Aryl-2-isoxazolin-5-yl]benzoates
    Patent number: 4129568
    Abstract: 2-[3-aryl-2-isoxazolin-5-yl]benzoates and their use as intermediates for agricultural chemicals. The subject isoxazolines can be converted to the corresponding isoxazoles. The latter are useful as herbicides and as plant growth regulants.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: December 12, 1978
    Assignee: Monsanto Company
    Inventor: Robert K. Howe
  • 1-Alkyl-3-aryl-4-pyrazolecarboxylates
    Patent number: 4116673
    Abstract: This invention relates to novel pyrazole carboxylates having the formula ##STR1## and their use as herbicides.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: September 26, 1978
    Assignee: Monsanto Company
    Inventors: Lawrence H. Brannigan, John E. Franz, Robert K. Howe
  • 5-Aryl-1,2,4-thiadiazole-3-carboxylates and agricultural methods
    Patent number: 4115095
    Abstract: Novel 5-aryl-1,2,4-thiadiazole-3-carboxylates have been found to be effective in reducing herbicidal injury to desirable plants. Said compounds are also useful in increasing the sucrose content of sugar cane.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: September 19, 1978
    Assignee: Monsanto Company
    Inventors: John E. Franz, Robert K. Howe
  • Plant growth regulators
    Patent number: 4066435
    Abstract: A novel class of ortho or meta-alkoxycarbonylbenzyltrialkylphosphonium salts are prepared and demonstrate useful plant growth regulation when applied to desirable plants. Representative of this class of compounds is m-methoxycarbonylbenzyltributylphosphonium bromide.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: January 3, 1978
    Assignee: Monsanto Company
    Inventor: Robert K. Howe
  • Alkoxycarbonylbenzyltrialkylphosphonium salts
    Patent number: 4053501
    Abstract: A novel class of ortho or meta-alkoxycarbonylbenzyltrialkylphosphonium salts are prepared and demonstrate useful plant growth regulation when applied to desirable plants. Representative of this class of compounds is m-methoxycarbonylbenzyltributylphosphonium bromide.
    Type: Grant
    Filed: April 3, 1973
    Date of Patent: October 11, 1977
    Assignee: Monsanto Company
    Inventor: Robert K. Howe