Patents by Inventor Dennis K. Krass

Dennis K. Krass 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).

  • Herbicidally active substituted diphenyl ether oxime derivatives
    Patent number: 4657580
    Abstract: This invention relates to certain herbicidally active substituted diphenyl ether oxime derivatives, herbicidal compositions of the same and the use thereof for preemergence and postemergence control of noxious plants, i.e., weeds.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: April 14, 1987
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Defoliant method
    Patent number: 4634464
    Abstract: This invention relates to the use of certain diphenyl ether oxime derivatives as pre-harvest crop defoliants.
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: January 6, 1987
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Herbicidally active substituted diphenyl ether oxime derivatives
    Patent number: 4584403
    Abstract: This invention relates to certain herbicidally active substituted diphenyl ether oxime derivatives, herbicidal compositions of the same and the use thereof for preemergence and postemergence control of noxious plants, i.e., weeds.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: April 22, 1986
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Herbicidally active substituted diphenyl ether oxime derivatives
    Patent number: 4564385
    Abstract: This invention relates to certain herbicidally active substituted diphenyl ether oxime derivatives, herbicidal compositions of the same and the use thereof for preemergence and postemergence control of noxious plants, i.e., weeds.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: January 14, 1986
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Herbicidally active quinoline or quinoxaline acetophenone oxime derivatives
    Patent number: 4528025
    Abstract: Disclosed are certain herbicidally active quinoline or quinoxaline acetophenone oxime derivatives, herbicidal compositions containing these compounds and the use of such compounds to control the growth of noxious plants, i.e., weeds.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: July 9, 1985
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, Sidney B. Richter
  • Method for preparing aldoxime or ketoxime-O-alkanoic acid
    Patent number: 4504671
    Abstract: Aldoxime or ketoxime-O-alkanoic acid is prepared by transoximation of an aldehyde or ketone, the reaction being conducted in a liquid phase at a pressure below one atmosphere. Conversion of the aldoxime or ketoxime-O-alkanoic acid to the ester or salt form is also described.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: March 12, 1985
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, John C. Crano, Melvin S. Newman
  • Herbicidally active substituted diphenyl ether acetals or ketals
    Patent number: 4501924
    Abstract: This invention relates to certain herbicidally active substituted diphenyl ether acetals or ketals, herbicidal compositions of the same and the use thereof for preemergence postemergence control of noxious plants, i.e., weeds.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: February 26, 1985
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Herbicidally active benzoxazolyloxy benzoate derivatives
    Patent number: 4468244
    Abstract: Disclosed are certain herbicidally active benzoxazolyloxy benzoate derivatives, herbicidal compositions containing these compounds and the use of such compounds to control the growth of noxious plants, i.e., weeds.
    Type: Grant
    Filed: December 8, 1982
    Date of Patent: August 28, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, Sidney B. Richter
  • Herbicidally active quinoline or quinoxaline benzoate derivatives
    Patent number: 4464533
    Abstract: Disclosed are certain herbicidally active quinoline or quinoxaline benzoate derivatives, herbicidal compositions containing these compounds and the use of such compounds to control the growth of noxious plants, i.e., weeds.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: August 7, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, Sidney B. Richter
  • Herbicidally active benzoxazolyl acetophenone oxime derivatives
    Patent number: 4456466
    Abstract: Disclosed are certain herbicidally active benzoxazolyl acetophenone oxime derivatives, herbicidal compositions containing these compounds and the use of such compounds to control the growth of noxious plants, i.e., weeds.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: June 26, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, Sidney B. Richter
  • Herbicidally active quinoline or quinoxaline acetophenone oxime derivatives
    Patent number: 4440930
    Abstract: Disclosed are certain herbicidally active quinoline or quinoxaline acetophenone oxime derivatives, herbicidal compositions containing these compounds and the use of such compounds to control the growth of noxious plants, i.e., weeds.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: April 3, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, Sidney B. Richter
  • 4-Trifluoromethylphenoxy-benzaldoximes
    Patent number: 4401602
    Abstract: Compounds, such as 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitroacetophenone oxime-O-(acetic acid, methyl ester) and 5-(2-chloro-4-trifluoromethylphenoxy)-2-chloroacetophenone oxime-O-(acetic acid, methyl ester), are useful for postemergence and preemergence control of weeds, and are represented by Formula I of the application.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: August 30, 1983
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Method for controlling weed growth using herbicidally 5-(2-chloro-4-trifluoromethyl)-, or (4-trifluoromethyl or 2,6-dichloro-4-trifluoromethylphenoxy)-2-nitro-substituted carbonyl oxime-O-alkyl ethers
    Patent number: 4375981
    Abstract: Disclosed are compounds such as 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitroacetophenone oxime-O-methyl ether, and the method of controlling weeds, such as wild oats with the compounds.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: March 8, 1983
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Acids and esters of 5-(2-optionally substituted-4-trifluoromethyl-6-optionally substituted phenoxy)-2-nitro, -halo, or-cyano alpha substituted phenyl carboxy oximes, and method of controlling weeds with them
    Patent number: 4344789
    Abstract: Compounds, such as 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitroacetophenone oxime-O-(acetic acid, methyl ester) and 5-(2-chloro-4-trifluoromethylphenoxy)-2-chloroacetophenone oxime-O-(acetic acid, methyl ester), are useful for postemergence and preemergence control of weeds, and are represented by Formula I of the application.
    Type: Grant
    Filed: April 15, 1980
    Date of Patent: August 17, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • 5-(2-Chloro-4-trifluoromethyl)-, or (4-trifluoromethyl or 2,6-dichloro-4-trifluoromethylphenoxy)-2-nitro-substituted carbonyl oxime-O-alkyl ethers
    Patent number: 4263227
    Abstract: Disclosed are compounds such as 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitroacetophenone oxime-O-methyl ether, and the method of controlling weeds, such as wild oats with the compounds.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: April 21, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • Control of weeds with 1-(3-methyl-5-isothiazolyl)-3-alkoxyl-3-methylureas
    Patent number: 4227916
    Abstract: Disclosed are 3-methyl-5-isothiazolyl-3-alkoxyureas, such as 1-(3-methyl-5-isothiazolyl)-3-methoxy-3-methylurea, and the method of controlling broadleaf and grassy weeds, such as Echinochloa crusgalli (L.) Beauv. (barnyardgrass), with these ureas.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: October 14, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • 1-(3-Methyl-5-isothiazolyl)-3-methoxy-3-methylurea
    Patent number: 4196126
    Abstract: Disclosed are 3-methyl-5-isothiazolyl-3-alkoxyureas, such as 1-(3-methyl-5-isothiazolyl)-3-methoxy-3-methylurea, and the method of controlling broadleaf and grassy weeds, such as Echinochloa crusgalli (L.) Beauv. (barnyardgrass), with these ureas.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: April 1, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Dennis K. Krass
  • 1-(3-Alkyl, or alkaryl, 4-H, or alkyl, or aryl-5-isothiazolyl)-2-oxo-3-(alkyl, alkenyl, or alkynyl)-5-(alkyl, alkenyl, or alkynyl) hexahydro-1,3,5-triazines
    Patent number: 4150226
    Abstract: Disclosed are compositions of 1-(3-alkyl, or 3-alkaryl, 4-H, or 4-alkyl or 4-aryl-5-isothiazolyl)-2-oxo-3-(alkyl, or alkenyl, or alkynyl)-5-(alkyl, alkenyl, or alkynyl)hexahydro-1,3,5-triazines such as 1-(3-methyl-5-isothiazolyl)-2-oxo-3-methyl-5-isopropylhexahydro-1,3,5-tria zine which are useful for controlling weeds, as well as the control of weeds with the compounds.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: April 17, 1979
    Assignee: PPG Industries, Inc.
    Inventors: Donald E. Hardies, Dennis K. Krass