Patents by Inventor Richard W. Meikle

Richard W. Meikle 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).

  • Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides, compositions containing them, and their utility as herbicides
    Patent number: 4954163
    Abstract: Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonamides, e.g., 5,7-dimethyl-N-(2,6-dichlorophenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sulf onamide and their agriculturally acceptable salt are prepared. These compounds and compositions containing them are useful for the control of unwanted vegetation. Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonyl chlorides and substituted anilines and their use as intermediates are also described.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: September 4, 1990
    Assignee: The Dow Chemical Company
    Inventors: William A. Kleschik, Robert J. Ehr, Mark J. Costales, Ben C. Gerwick, III, Richard W. Meikle, deceased, William T. Monte, Norman R. Pearson
  • Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonyl chlorides
    Patent number: 4886883
    Abstract: Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonamides, e.g., 5,7-dimethyl-N-(2,6-dichlorophenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sulf onamide and their agriculturally acceptable salt are prepared. These compounds and compositions containing them are useful for the control of unwanted vegetation. Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonyl chlorides and substituted anilines and their use as intermediates are also described.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: December 12, 1989
    Assignee: The Dow Chemical Company
    Inventors: William A. Kleschick, Robert J. Ehr, Mark J. Costales, Ben C. Gerwick, III, Richard W. Meikle, deceased, William T. Monte, Norman R. Pearson
  • Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides, compositions containing them, and their utility as herbicides
    Patent number: 4818273
    Abstract: Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonamides, e.g., 5,7-dimethyl-N-(2,6-dichlorophenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sulf onamide and their agriculturally acceptable salts are prepared. These compounds and compositions containing them are useful for the control of unwanted vegetation. Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonyl chlorides and substituted anilines and their use as intermediates are also described.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: April 4, 1989
    Assignee: The Dow Chemical Company
    Inventors: William A. Kleschick, Robert J. Ehr, Mark J. Costales, Ben C. Gerwick, III, Richard W. Meikle, deceased, William T. Monte, Pearson, Norman R.
  • Novel substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides and compositions and method for inhibiting pollen formation in corn
    Patent number: 4755212
    Abstract: Novel compounds, e.g., 5,7-dimethyl-N-(2,6-dichlorolphenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sul fonamide and their compositions and use in the control of weeds and in the suppression of nitrification of ammonium nitrogen in soil. Other novel compounds and their compositions and use in the inhibition of bolting in sugar beets. Other novel compounds and their compositions and use as plant gametocides.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: July 5, 1988
    Assignee: The Dow Chemical Company
    Inventors: William A. Kleschick, Ben C. Gerwick, III, Robert J. Ehr, William T. Monte, Norman R. Pearson, Richard W. Meikle, Mark J. Costales
  • Substituted 1,2,4-triazolo[1,5-a]-pyrimidine-2-sulfonamides and compositions and methods of controlling undesired vegetation and inhibiting sugar beet bolting
    Patent number: 4741764
    Abstract: Novel compounds, e.g., 5,7-dimethyl-N-(2,6-dichlorolphenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sul fonamide and their compositions and use in the control of weeds and in the suppression of nitrificatin of ammonium nitrogen in soil. Other novel compounds and their compositions and use in the inhibition of bolting in sugar beets. Other novel compounds and their compositions and use as plant gametocides.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: May 3, 1988
    Assignee: The Dow Chemical Company
    Inventors: William A. Kleschick, Ben C. Gerwick, III, Robert J. Ehr, William T. Monte, Norman R. Pearson, Richard W. Meikle, Mark J. Costales
  • Substituted 1,2,4-triazolo[1,5-a]-pyrimidine-2-sulfonamides and compositions and methods of controlling undesired vegetation and suppressing the nitrification of ammonium nitrogen in soil
    Patent number: 4740233
    Abstract: Novel compounds, e.g., 5,7-dimethyl-N-(2,6-dichlorolphenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sul fonamide and their compositions and use in the control of weeds and in the suppression of nitrification of ammonium nitrogen in soil. Other novel compounds and their compositions and use in the inhibition of bolting in sugar beets. Other novel compounds and their compositions and use as plant gametocides.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: April 26, 1988
    Assignee: The Dow Chemical Company
    Inventors: William A. Kleschick, Robert J. Ehr, Ben C. Gerwick, III, William T. Monte, Norman R. Pearson, Mark J. Costales, Richard W. Meikle