Patents by Inventor Gerard A. Dutra

Gerard A. Dutra 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: 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: 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
  • Patent number: 4666500
    Abstract: This disclosure relaes to arylsulfenyl derivatives of benzyl and aryl esters of N-phosphonomethylglycines. This disclosure further relates to herbicidal compositions containing arylsulfenyl derivatives of benzyl and aryl esters of N-phosphonomethylglycines, to the use thereof, and to herbicidal methods employing such compounds and compositions.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: May 19, 1987
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4601744
    Abstract: This invention relates to novel esters of N,N'-methylene-bis-[N-[(diaryloxyphosphinyl)methyl]glycine] which are useful as herbicides. The invention also relates to herbicidal methods and compositions employing the novel esters.
    Type: Grant
    Filed: February 5, 1985
    Date of Patent: July 22, 1986
    Assignee: Monsanto Company
    Inventors: James A. Sikorski, Deborah Mischke, Gerard A. Dutra
  • Patent number: 4395374
    Abstract: This disclosure relates to arylsulfenyl derivatives of benzyl and aryl esters of N-phosphonomethylglycines. This disclosure further relates to herbicidal compositions containing arylsulfenyl derivatives of benzyl and aryl esters of N-phosphonomethylglycines, to the use thereof, and to herbicidal methods employing such compounds and compositions.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: July 26, 1983
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4340416
    Abstract: This disclosure relates to novel N-substituted triesters of N-phosphonomethylglycine which are useful as herbicides. This disclosure further relates to herbicidal compositions containing such N-substituted N-phosphonomethylglycinates and to herbicidal methods employing such compounds and compositions.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: July 20, 1982
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra
  • Patent number: 4323387
    Abstract: Certain N-thiolcarbonyl derivatives of N-phosphonomethylglycinonitrile esters are novel chemical compounds having desirable herbicidal properties.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: April 6, 1982
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra
  • Patent number: 4322239
    Abstract: This disclosure relates to N-nitroso-N-phosphonomethylglycine triesters and their use as herbicides and in herbicidal compositions. More particularly, this disclosure relates to N-nitroso-N-phosphonomethylglycine esters wherein a lower alkyl or benzyl group is bonded to the carboxyl moiety and a phenyl or substituted phenyl group is bonded to phosphorus.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: March 30, 1982
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4322238
    Abstract: This disclosure relates to N-nitroso-N-phosphonomethylglycinonitrile compounds, the preparation thereof and their use as herbicides and in herbicidal compositions.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: March 30, 1982
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4300943
    Abstract: This disclosure relates to novel ester derivatives of N-arylthio-N-phosphonomethylglycinonitrile which are useful as herbicides. This disclosure further relates to herbicidal compositions containing such N-phosphonomethylglycinonitriles and to herbicidal methods employing such compounds and compositions.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: November 17, 1981
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4261727
    Abstract: This disclosure relates to novel N-substituted triesters of N-phosphonomethylglycine which are useful as herbicides. This disclosure further relates to herbicidal compositions containing such N-substituted N-phosphonomethylglycinates and to herbicidal methods employing such compounds and compositions.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: April 14, 1981
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra
  • Patent number: 4252554
    Abstract: This disclosure relates to novel ester derivatives of N-arylthio-N-phosphonomethylglycinonitrile which are useful as herbicides. This disclosure further relates to herbicidal compositions containing such N-phosphonomethylglycinonitriles and to herbicidal methods employing such compounds and compositions.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: February 24, 1981
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4238218
    Abstract: This disclosure relates to ethanimidothioic acid ester hydrochlorides. More particularly, this disclosure relates to novel (.alpha.-diaryloxyphosphinylmethylamino) ethanimidothioic hydrocarbon ester hydrochlorides, herbicidal compositions containing such thioimidate hydrochlorides and the herbicidal use thereof.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: December 9, 1980
    Assignee: Monsanto Company
    Inventors: Gerard A. Dutra, James A. Sikorski
  • Patent number: 4120689
    Abstract: Alkyl-[di(benzyl) or di(aryl)]esters of N-phosphonomethyl glycine are produced by the reaction of a dibenzyl or diaryl phosphite with an N-methylene alkyl glycinate trimer. These esters and the hydrolysis products thereof containing at least one benzyloxy or aryloxy group bonded to phosphorus are novel compounds having the formula ##STR1## wherein R is a member of the group consisting of phenyl, benzyl, naphthyl, biphenylyl, benzyloxyphenyl and phenyl, benzyl or naphthyl groups substituted with from 1 to 3 groups selected from the class consisting of hydroxyl, lower alkyl, lower alkoxy, lower alkylthio, trifluoromethyl, carbo (lower alkoxy), nitro, or halo; R.sub.1 is hydrogen or an R group, and R.sub.2 is a lower alkyl group or hydrogen, and the strong acid salts of the compounds wherein neither R.sub.1 or R.sub.2 is H. These compounds are useful as post-emergent herbicides.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: October 17, 1978
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra
  • Patent number: 4104050
    Abstract: This disclosure relates to acetimidic acid ester hydrochlorides. More particularly, this disclosure relates to novel (.alpha.-diaryloxyphosphinylmethylamino) acetimidic hydrocarbon ester hydrochloride, herbicidal compositions containing such acetimidic hydrochloride and the herbicidal use thereof.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: August 1, 1978
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra
  • Patent number: 4089671
    Abstract: N,N'-methylenebis-[(O,O-diaryl N-phosphonomethylglycinonitriles] are described as well as a process for producing same. These compounds are useful as herbicides.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: May 16, 1978
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra
  • Patent number: 4083898
    Abstract: O-aryl N-phosphonomethylglycinonitriles having utility as herbicides are prepared by reacting in the absence of acidic catalysts 1,3,5-tricyanomethyl-hexahydro-1,3,5-triazine with a diaryl phosphite. The products can be hydrolyzed to form N-phosphonomethylglycine.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: April 11, 1978
    Assignee: Monsanto Company
    Inventor: Gerard A. Dutra