Patents by Inventor Len F. Lee

Len F. Lee 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).

  • Herbicidal composition and method
    Patent number: 4398941
    Abstract: The invention herein pertains to dialkyl 3,5-bis(perfluoroalkyl)-2H-1,4-thiazine-2,6-dicarboxylates, a method for preparing the compounds and to herbicidal compositions and methods utilizing said compounds.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: August 16, 1983
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 5-Aryl-4-isothiazolecarboxylic acids and derivatives
    Patent number: 4380465
    Abstract: 5-Aryl-4-isothiazolecarboxylic acids have been found to reduce herbicidal injury of rice plants due to the application of 2-chloro-2',6'-diethyl-N-(butoxymethyl)-acetanilide.
    Type: Grant
    Filed: October 17, 1980
    Date of Patent: April 19, 1983
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • Seed coated with 2-chloro-4,5-disubstituted-thiazole derivatives which are herbicidal safeners
    Patent number: 4377054
    Abstract: 2-Chloro-4,5-disubstituted-thiazoles have been found to be effective in reducing herbicidal injury to sorghum plants due to the application thereto of acetanilide and thiocarbamate herbicides.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: March 22, 1983
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Chloro-4,5-disubstituted-thiazoles useful as herbicidal safeners
    Patent number: 4377693
    Abstract: 2-chloro-4,5-disubstituted-thiazoles have been found to be effective in reducing herbicidal injury to sorghum plants due to the application thereto of acetanilide and thiocarbamate herbicides.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: March 22, 1983
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Chloro-4,5-disubstituted-thiazoles useful as herbicidal safeners
    Patent number: 4371389
    Abstract: 2-chloro-4,5-disubstituted-thiazoles have been found to be effective in reducing herbicidal injury to sorghum plants due to the application thereto of acetanilide and thiocarbamate herbicides.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: February 1, 1983
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Substituted-4-alkyl or trihaloalkyl-5-diazolecarboxylic acids
    Patent number: 4360678
    Abstract: Derivatives of 2-substituted-4-alkyl or trihaloalkyl-5-oxazolecarboxylic acid have been found to be effective in reducing herbicidal injury to crop plants caused by thiocarbamate and acetanilide herbicides, and especially in reducing herbicidal injury to rice, sorghum or wheat crops, especially rice and sorghum, caused by triallate, alachlor and butachlor herbicides.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: November 23, 1982
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Substituted-4-aryl-5-thiazolecarboxylic acids and their derivatives as safening agents
    Patent number: 4336389
    Abstract: These compounds have been found to be effective in reducing herbicidal injury to direct-seeded rice caused by 2-chloro-2',6'-diethyl-N-(butoxymethyl)acetanilide.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: June 22, 1982
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Amino-4-substituted-thiazolecarboxylic acids and their derivatives
    Patent number: 4308391
    Abstract: 2-Amino-4-substituted-5-thiazolecarboxylic acids and derivatives thereof, are intermediates for the preparation of 2-substituted-4-substituted-5-thiazolecarboxylic acid derivatives which are herbicidal safeners.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: December 29, 1981
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Substituted-4-alkyl or trihaloalkyl-5-oxazolecarboxylic acids as safening agents
    Patent number: 4303439
    Abstract: Derivatives of 2-substituted-4-alkyl or trihaloalkyl-5-oxazolecarboxylic acid have been found to be effective in reducing herbicidal injury to crop plants caused by thiocarbamate and acetanilide herbicides, and especially in reducing herbicidal injury to rice, sorghum or wheat crops, especially rice and sorghum, caused by triallate, alachlor and butachlor herbicides.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: December 1, 1981
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Substituted-5-phenyl-4-thiazolecarboxylic acids and their derivatives as safening agents
    Patent number: 4298375
    Abstract: 2-Substituted-5-phenyl-4-thiazolecarboxylic acids and their derivatives have been found to be effective in reducing herbicidal injury to sorghum plants caused by triallate, alachlor and butachlor herbicides, and especially in reducing herbicidal injury to sorghum plants caused by alachlor herbicide.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: November 3, 1981
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Chloro-4,5-disubstituted-thiazoles useful as herbicidal safeners
    Patent number: 4284426
    Abstract: 2-chloro-4,5-disubstituted-thiazoles have been found to be effective in reducing herbicidal injury to sorghum plants due to the application thereto of acetanilide and thiocarbamate herbicides.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: August 18, 1981
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2-Chloro-4-trifluoromethyl-5-thiazolecarboxylic acids and derivatives
    Patent number: 4251261
    Abstract: 2-Chloro-4-trifluoromethyl-5-thiazolecarboxylic acids and derivatives thereof have been found to reduce herbicidal injury of sorghum plants due to the application thereto of 2-chloro-N-(2-methoxy-1-methylethyl)-6'-ethyl-o-acetotoluidide.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: February 17, 1981
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 3-(m-Trifluoromethylphenyl)-5-halomethyl isoxazoles as safening agents
    Patent number: 4247322
    Abstract: Compounds of the formula: ##STR1## where X is chloro, bromo, fluoro or iodo, have been found to be effective in reducing herbicidal injury to direct seeded rice plants caused by 2-chloro-2',6'-diethyl-N-(butoxymethyl)acetanilide herbicide.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: January 27, 1981
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • 2,4-Disubstituted-5-thiazolecarboxylic acids and derivatives
    Patent number: 4199506
    Abstract: 2,4-Disubstituted-5-thiazolecarboxylic acids and derivatives thereof have been found to reduce herbicidal injury of corn, rice and sorghum plants due to the application thereto of acetamide herbicides.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: April 22, 1980
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee