Patents by Inventor Bruce C. Hamper

Bruce C. Hamper 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: 5675017
    Abstract: The invention herein relates to certain substituted-arylpyrazole compounds, herbicidal compositions containing same, herbicidal methods of use and processes for preparing said compounds.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Lisa L. McDermott
  • Patent number: 5672715
    Abstract: The invention herein relates to certain substituted-arylpyrazole compounds, herbicidal compositions containing same, herbicidal methods of use and processes for preparing said compounds.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 30, 1997
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Lisa L. McDermott
  • Patent number: 5668088
    Abstract: The invention herein relates to certain substituted-arylpyrazole compounds, herbicidal compositions containing same, herbicidal methods of use and processes for preparing said compounds.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 16, 1997
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Lisa L. Mc Dermott
  • Patent number: 5654490
    Abstract: The present invention relates to novel 4-halo-2-fluoro-5-alkylbenzoyl compounds and their methods of manufacture. These compounds are useful for the preparation of agricultural chemicals and medicines, particularly as intermediates for an active class of aryl-haloalkylpyrazole and aryl alkylsulfonylpyrazole herbicides.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: August 5, 1997
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Kindrick L. Leschinsky
  • Patent number: 5600016
    Abstract: The present invention relates to novel 4-halo-2-fluoro-5-alkoxybenzoyl compounds and their methods of manufacture. These compounds are useful for the preparation of agricultural chemicals and medicines, particularly as intermediates for an active class of arylhaloalkylpyrazole and aryl alkylsulfonylpyrazole herbicides.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: February 4, 1997
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Kindrick L. Leschinsky
  • Patent number: 5600008
    Abstract: The present invention relates to novel 4-halo-2-fluoro-5-alkoxybenzoyl compounds and their methods of manufacture. These compounds are useful for the preparation of agricultural chemicals and medicines, particularly as intermediates for an active class of arylhaloalkylpyrazole and aryl alkylsulfonylpyrazole herbicides.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: February 4, 1997
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Kindrick L. Leschinsky
  • Patent number: 5587485
    Abstract: The disclosure herein relates to the title compounds and synthesis thereof by catalytic oxidation of the corresponding alkyl-substituted phenylheterocyclic or carboxylic compound.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: December 24, 1996
    Assignee: Monsanto Company
    Inventors: John P. Chupp, Bruce C. Hamper, Richard H. Wettach
  • Patent number: 5536700
    Abstract: Herbicidal compositions of glyphosate, its salts, diquat, or paraquat in combination with a compound of the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and n are as defined. Preferred are combinations of glyphosate, its salts, diquat, or paraquat with 2-chloro-5-(4-bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl)-4-fluoro benzoic acid, 1-methylethyl ester.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: July 16, 1996
    Assignee: Monsanto Company
    Inventors: Scott S. Woodard, Bruce C. Hamper, Kurt Moedritzer, Michael D. Rogers, Deborah A. Mischke, Gerard A. Dutra
  • Patent number: 5532416
    Abstract: The present invention relates to novel 4-halo-2-fluoro-5-alkylbenzoyl compounds and their methods of manufacture. These compounds are useful for the preparation of agricultural chemicals and medicines, particularly as intermediates for an active class of aryl-haloalkylpyrazole and aryl alkylsulfonylpyrazole herbicides.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: July 2, 1996
    Assignee: Monsanto Company
    Inventors: Bruce C. Hamper, Kindrick L. Leschinsky
  • Patent number: 5530126
    Abstract: The disclosure herein relates to a process for the preparation of compounds according to Formula N ##STR1## which comprises using a compound of Formula M ##STR2## as starting material for alkylation to said compounds of Formula N in an inert solvent at temperatures within the range of 0.degree.-200.degree. C. whereinR.sub.1 is C.sub.1-5 alkyl;R.sub.2 is C.sub.1-5 haloalkyl;R.sub.3 is halogen;R.sub.5 is hydrogen or halogen;q is 0-2;R.sub.28 and R.sub.30 are independently an alkyl, alkenyl or alkynyl radical having up to 5 carbon atoms or said radicals substituted with a ##STR3## radical; X is O, S(O).sub.m, NR.sub.19 or CR.sub.20 R.sub.21 ;Y is O, S(O).sub.m or NR.sub.22 ;m is 0-2 andR.sub.13 and R.sub.19 -R.sub.22 are hydrogen or an R.sub.28 member.The above compounds are useful as herbicides.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: June 25, 1996
    Assignee: Monsanto Company
    Inventors: Scott S. Woodard, Bruce C. Hamper, Kurt Moedritzer, Michael D. Rogers, Deborah A. Mischke, Gerard A. Dutra
  • Patent number: 5496956
    Abstract: The invention herein relates to certain substituted-arylpyrazole compounds, herbicidal compositions containing same, herbicidal methods of use and processes for preparing said compounds.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: March 5, 1996
    Assignee: Monsanto Company
    Inventors: Scott S. Woodard, Bruce C. Hamper, Kurt Moedritzer, Michael D. Rogers, Deborah A. Mischke, Gerard A. Dutra
  • Patent number: 5489571
    Abstract: The invention herein relates to certain substituted-arylpyrazole compounds, herbicidal compositions containing same, herbicidal methods of use and processes for preparing said compounds.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: February 6, 1996
    Assignee: Monsanto Company
    Inventors: Scott S. Woodard, Bruce C. Hamper, Kurt Moedritzer, Michael D. Rogers, Deborah A. Mischke, Gerard A. Dutra
  • Patent number: 5281571
    Abstract: The invention herein relates to titled compounds having the structure ##STR1## wherein the R.sub.1 -(R.sub.4).sub.n members are as defined in the claims. Characteristic features of these compounds are the haloalkyl R.sub.2 radical and cyclization of two R.sub.4 members at the meta and para positions of the phenyl ring to form a substituted benzoxazinone ring fused to the phenyl or benzthiazinone ring. Such compounds are useful as active ingredients in herbicidal compositions to control undesirable weeds in various crops.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: January 25, 1994
    Assignee: Monsanto Company
    Inventors: Scott S. Woodard, Bruce C. Hamper, Kurt Moedritzer, Michael D. Rogers, Deborah A. Mischke, Gerard A. Dutra