Patents by Inventor B. Clifford Gerwick, III

B. Clifford Gerwick, III 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).

  • Method for identifying weeds resistant to inhibitors of acetolactate synthase
    Patent number: 5932434
    Abstract: Resistance of given plant tissue to an inhibitor of acetolactate synthase is identified by(a) combining in an aqueous medium a sample of the plant tissue, the inhibitor of acetolactate synthase, and an inhibitor of keto acid reductoisomerase;(b) allowing time for acetolactate to accumulate;(c) rupturing the cells;(d) acidifying the mixture to convert any accumulated acetolactate to acetoin; and(e) calorimetrically detecting the presence of acetoin in the mixture.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: August 3, 1999
    Assignee: Dow AgroSciences LLC
    Inventors: B. Clifford Gerwick, III, Robert J. Eilers, Linda C. Mireles
  • Hydroxycornexistin
    Patent number: 5424278
    Abstract: Hydroxycornexistin (1), the free dibasic acid thereof (2) ##STR1## agronomically acceptable bis-ester, monoester, monoamide, and monothioesters thereof, and agronomically acceptable salts thereof are selective herbicides for broad spectrum broadleaf and grass weed control in corn.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: June 13, 1995
    Assignee: DowElanco
    Inventors: Stephen C. Fields, B. Clifford Gerwick, III, Linda C. Mireles-Lo
  • Fluorophenoxyphenoxypropionates and derivatives thereof
    Patent number: 4808750
    Abstract: Novel fluorophenoxyphenoxypropionates and derivatives thereof possess herbicidal activity selectively in the presence of broadleaf crops. Preemergent and postemergent applications are contemplated.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: February 28, 1989
    Assignee: The Dow Chemical Company
    Inventors: Richard B. Rogers, B. Clifford Gerwick, III
  • Fluorophenoxyphenoxypropionates and derivatives thereof 18-methyl-4,15-estradien-3-one, and the novel starting compounds for this process
    Patent number: 4751329
    Abstract: Novel intermediates useful in the preparation of fluorophenoxyphenoxypropionates and derivatives thereof which possess herbicidal activity selectively in the presence of broadleaf crops.
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: June 14, 1988
    Assignee: The Dow Chemical Company
    Inventors: Richard B. Rogers, B. Clifford Gerwick, III
  • Fluorophenoxyphenoxypropionates and derivatives thereof
    Patent number: 4725683
    Abstract: Novel intermediates useful in the preparation of fluorophenoxyphenoxypropionates and derivatives thereof which possess herbicidal activity selectively in the presence of broadleaf crops.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: February 16, 1988
    Assignee: The Dow Chemical Company
    Inventors: Richard B. Rogers, B. Clifford Gerwick, III
  • Fluorophenoxyphenoxypropionates and derivatives thereof
    Patent number: 4642338
    Abstract: Novel intermediates useful in the preparation of fluorophenoxyphenoxypropionates and derivatives thereof which possess herbicidal activity selectively in the presence of broadleaf crops.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: February 10, 1987
    Assignee: The Dow Chemical Company
    Inventors: Richard B. Rogers, B. Clifford Gerwick, III
  • 2-[16-(3-fluoro-5-trifluoromethyl-pyridinyl-2-oxy)-3-nitro-phenoxy]-pro pionic acid derivatives, herbicidal compositions containing same and herbicidal method of use
    Patent number: 4599105
    Abstract: Novel compounds, e.g., N-methanesulfonyl 2-((5-(3-fluoro-5-(trifluoromethyl)-2-pyridinyl)oxy)-2-nitro-5-phenoxy)pro pionamide are selective herbicides useful for controlling weeds in valuable crops.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: July 8, 1986
    Assignee: The Dow Chemical Company
    Inventors: Sudarshan K. Malhotra, B. Clifford Gerwick, III
  • Selective, broadspectrum weed control in soybeans
    Patent number: 4586949
    Abstract: Less damage to soybeans occur when the combination of bentazon and a 3-substituted-pyridyloxy(or thio)phenoxy alkanoate herbicide is applied thereto, in comparison to the combination of bentazon and a 3-unsubstituted pyridyloxy(or thio)phenoxy alkanoate herbicide.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: May 6, 1986
    Assignee: The Dow Chemical Company
    Inventor: B. Clifford Gerwick, III
  • Fluorophenoxyphenoxypropionates and derivatives thereof
    Patent number: 4550192
    Abstract: Novel fluorophenoxyphenoxypropionates and derivatives thereof possess herbicidal activity selectively in the presence of broadleaf crops. Preemergent and postemergent applications are contemplated.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: October 29, 1985
    Assignee: The Dow Chemical Company
    Inventors: Richard B. Rogers, B. Clifford Gerwick, III
  • Certain 3-nitro-6-phenoxy-2-pyridyl-oxy-propionates having herbicidal activity
    Patent number: 4547218
    Abstract: Novel compounds having a pyridinyl radical positioned adjacent to the propanoic acid portion, e.g., ethyl 2-((6-(2-chloro-4-(trifluoromethyl)-phenoxy)-3-nitro-2-pyridinyl)oxy)propi onate, which are selective herbicides useful for controlling weeds in valuable crops.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: October 15, 1985
    Assignee: The Dow Chemical Company
    Inventors: Sudarshan K. Malhotra, B. Clifford Gerwick, III