Patents by Inventor Leonard J. Stach

Leonard J. Stach 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).

  • 1,3,5-Triazine-2-one derivatives and their use as plant growth regulators
    Patent number: 4826526
    Abstract: This application discloses the compound 3-(2-chloropyridin-4-yl)-5-methyl-1-phenyl-1,3,5-triazin-2-one. This compound is useful in increasing the size of grapes, as a cotton defoliant, and as a herbicide.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: May 2, 1989
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Frank Wu
  • 2-(2,5-difluorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5 diones
    Patent number: 4758263
    Abstract: Disclosed are herbicides of the formula: ##STR1## wherein R is H or halo of atomic weight of from 18 to 80.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: July 19, 1988
    Assignee: Sandoz Ltd.
    Inventors: John Krenzer, Leonard J. Stach
  • Method of increasing the yield of sugar from sugarcane
    Patent number: 4685960
    Abstract: The subject matter of this invention is the use of propanoic esters of the following structural formula: ##STR1## wherein R is an alkyl group having 10 to 16 atoms to increase the recoverable sugar in sugarcane.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: August 11, 1987
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Method of increasing the yield of sugar from sugarcane
    Patent number: 4662934
    Abstract: The subject matter of this invention is the use of 2,4-dichlorophenoxyethyl 2-[4-(3,5-dichloropyridin-2-yloxy)phenoxy]propanoate as a sugarcane ripener.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: May 5, 1987
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Pent-2-en-4-on-2-yl 2-(4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy)propanoate useful for increasing recoverable sugar in sugar cane
    Patent number: 4661148
    Abstract: The subject matter of this invention is the new compound, pent-2-en-4-on-2-yl 2-[4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy]propanoate. This compound is useful for increasing the recoverable sugar in sugarcane.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: April 28, 1987
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Certain 1-(N-methylsulfonamido)-prop-2-yl 2-/4-(pyrid-2-yloxy)phenoxy/-propionate derivatives and their use for increasing recoverable sugar contained in sugar cane
    Patent number: 4629497
    Abstract: The subject matter of this invention are the following sulfonamides: ##STR1## wherein X is chlorine or trifluoromethylY is chlorine or hydrogenZ is hydrogen or methyl
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: December 16, 1986
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Pyridinyloxy propoinamide derivatives useful in increasing the recoverable sugar in sugarcane
    Patent number: 4615728
    Abstract: This invention relates to a propionamides of the following structural formula: ##STR1## wherein X is chlorine or trifluoromethyl and Y is hydrogen or chlorine. The compounds of this invention are useful as sugarcane ripeners.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: October 7, 1986
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • 6-Amino-2-ethylthio-4-pyrimidinol as a citrus ripener
    Patent number: 4559080
    Abstract: The subject matter of this invention is the use of 6-amino-2-ethylthio-4-pyrimidinol and its water-soluble salts to lessen the acidity and increase the Brix/acid ratio of citrus.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: December 17, 1985
    Inventors: Louis G. Nickell, Leonard J. Stach
  • 3-Chlorobenzyl-3,6-dichloro-2-methoxybenzoate as a citrus ripener
    Patent number: 4545813
    Abstract: The subject matter of this invention is the use of 3-chlorobenzyl-3,6-dichloro-2-methoxybenzoate to increase the recoverable sugar in citrus.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: October 8, 1985
    Assignee: Velsicol Chemical Corporation
    Inventors: Louis G. Nickell, Leonard J. Stach, George F. Luteri
  • 3-Chlorobenzyl-3,6-dichloro-2-methoxybenzoate
    Patent number: 4546196
    Abstract: The subject matter of this application is the new compound, 3-chlorobenzyl-3,6-dichloro-2-methoxybenzoate and its use as a sugarcane ripener.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: October 8, 1985
    Assignee: Velsicol Chemical Corporation
    Inventors: George F. Luteri, Leonard J. Stach, Louis G. Nickell
  • 3-Chlorobenzyl-3,6-dichloro-2-methoxybenzoate as a grape ripener
    Patent number: 4540431
    Abstract: The subject matter of this invention is the use of 3-chlorobenzyl-3,6-dichloro-2-methoxybenzoate to increase the recoverable sugar in grapes.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: September 10, 1985
    Assignee: Velsicol Chemical Corporation
    Inventors: Louis G. Nickell, Leonard J. Stach, George F. Luteri
  • Method of increasing the recoverable sugar from sugar beets
    Patent number: 4536210
    Abstract: This application discloses a method for increasing the recoverable sugar from sugar beet plants by applying to the sugar beet plants an effective amount of a compound having the structural formula: ##STR1## wherein R is selected from the group consisting of hydrogen, alkyl, alkoxy, hydroxy and hydroxyalkyl and R.sup.1 is independently selected from the group consisting of alkyl, alkoxy, hydroxy and hydroxyalkyl.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: August 20, 1985
    Assignee: Velsicol Chemical Corporation
    Inventor: Leonard J. Stach
  • Herbicidal oxime esters of 2-methoxy-3,6-dichlorobenzoic acid
    Patent number: 4491469
    Abstract: This application discloses compounds of the formula: ##STR1## wherein R and R.sup.1 are selected from alkyl and phenyl and can form a cyclic group having 5 or 6 carbon atoms.The disclosed compounds are useful as herbicides.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: January 1, 1985
    Assignee: Velsicol Chemical Corporation
    Inventor: Leonard J. Stach
  • Composition of matter
    Patent number: 4440567
    Abstract: This application discloses the compound, .alpha.-cyanobenzyl-3,6-dichloro-2-methoxybenzoate, useful as a herbicide.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: April 3, 1984
    Assignee: Velsicol Chemical Corporation
    Inventor: Leonard J. Stach
  • Phthalimides of phenoxybenzoic acids
    Patent number: 4427441
    Abstract: This invention discloses novel herbicidal chemical compounds of the formula ##STR1## wherein X is halogen or trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R is selected from the group consisting of nitro, alkylthio, halogen and cyano; Z is selected from the group consisting of alkyl, halogen and nitro; and n is an integer from 0 to 4.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: January 24, 1984
    Assignee: Velsicol Chemical Corporation
    Inventors: Frank Wu, Leonard J. Stach
  • Furfuryl amides of phenoxyphenoxyalkanoic acids and herbicidal use
    Patent number: 4404018
    Abstract: This invention discloses chemical compounds of the formula ##STR1## wherein X is halogen or trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; Z is selected from the group consisting of nitro, cyano and halogen; R.sup.1 is alkyl; R.sup.2 is hydrogen or alkyl; and R.sup.3 is furfuryl or tetrahydrofurfuryl. Further discussed are herbicidal compositions utilizing the aforedescribed compounds and methods of controlling undesired vegetation therewith.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: September 13, 1983
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Takeo Hokama
  • Heterocyclic anilines
    Patent number: 4402728
    Abstract: This application discloses compounds of the structural formula: ##STR1## wherein each X is independently selected from the group consisting of oxygen and sulfur; m is 0 or 1; R is alkyl. Each R.sup.1 is independently selected from the group consisting of hydrogen and alkyl. Y is selected from the group consisting of alkyl and ##STR2## wherein each Z is independently selected from the group consisting of hydrogen and alkyl.These compounds are particularly useful as pre-emergence herbicides.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: September 6, 1983
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Sun M. Chen
  • N-Acylated lactams and their herbicidal compositions and method of use
    Patent number: 4398938
    Abstract: This invention relates to compounds of the formula: ##STR1## wherein X is halogen or trifluoromethyl; hydrogen, halogen or cyano; Z is halogen, cyano or nitro; R is alkyl; m is an integer from 0 to 6; and n is an integer from 3 to 5.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: August 16, 1983
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Frank Wu
  • Dioxolane substituted 2,6-dinitroanilines
    Patent number: 4397677
    Abstract: This invention discloses new chemical compounds of the formula ##STR1## wherein R.sup.1 is alkyl; R.sup.2 and R.sup.3 are hydrogen or alkyl; and X is selected from the group consisting of alkyl and haloalkyl, and their utility as herbicides.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: August 9, 1983
    Assignee: Velsicol Chemical Corporation
    Inventor: Leonard J. Stach
  • Herbicidal tetrahydrobenzothiazolylimidazolidinones
    Patent number: 4319914
    Abstract: This invention discloses a compound of the formula ##STR1## wherein X is selected from the group consisting of alkyl, halogen, and cyano; n is an integer from 0 to 4; and R is selected from the group consisting of alkyl, alkenyl and haloalkyl.The foregoing compounds are useful as herbicides.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: March 16, 1982
    Assignee: Velsicol Chemical Corporation
    Inventor: Leonard J. Stach