Patents by Inventor Nakyen Choy

Nakyen Choy 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).

  • PROCESSES RELATED TO FORMATION OF ARYLCYCLOPROPYL CARBOXYLIC ACIDS
    Publication number: 20230220427
    Abstract: This disclosure relates to processes to form arylcyclopropyl carboxylic acids useful in forming molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda.
    Type: Application
    Filed: April 21, 2021
    Publication date: July 13, 2023
    Applicant: CORTEVA AGRISCIENCE LLC
    Inventors: PABLO JOSE CABRERA VENTURA, NAKYEN CHOY, STEFFEN N. GOOD, FANGZHENG LI, ELIZABETH O. MCCUSKER, PATRICK JAMES NELSON, JEFFREY NISSEN, MATTHEW ARNEL ROBINSON, TAY ROSENTHAL
  • MOLECULES HAVING PESTICIDAL UTILITY, AND INTERMEDIATES, COMPOSITIONS, AND PROCESSES, RELATED THERETO
    Publication number: 20230180761
    Abstract: This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
    Type: Application
    Filed: February 9, 2023
    Publication date: June 15, 2023
    Applicant: CORTEVA AGRISCIENCE LLC
    Inventors: RONALD J. HEEMSTRA, RONALD ROSS, JR., KYLE A. DEKORVER, KAITLYN GRAY, DANIEL I. KNUEPPEL, PETER VEDNOR, TIMOTHY P. MARTIN, JOSEPH D. ECKELBARGER, JOHN F. DAEUBLE, SR., RICKY HUNTER, DAVID A. DEMETER, TONY K. TRULLINGER, ERICH W. BAUM, ZOLTAN L. BENKO, NAKYEN CHOY, GARY D. CROUSE, FANGZHENG LI, JEFFREY NISSEN, MONICA B. OLSON, MICHELLE RIENER, THOMAS C. SPARKS, FRANK J. WESSELS, MAURICE C. YAP
  • Molecules having pesticidal utility, and intermediates, compositions, and processes, related thereto
    Patent number: 11632957
    Abstract: This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: April 25, 2023
    Assignee: CORTEVA AGRISCIENCE LLC
    Inventors: Ronald J. Heemstra, Ronald Ross, Jr., Kyle A. DeKorver, Kaitlyn Gray, Daniel I. Knueppel, Peter Vednor, Timothy P. Martin, Joseph D. Eckelbarger, John F. Daeuble, Sr., Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich W. Baum, Zoltan L. Benko, Nakyen Choy, Gary D. Crouse, Fangzheng Li, Jeffrey Nissen, Monica B. Olson, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • 5-fluoro-4-imino-3(alkyl/substituted alkyl)-1-(arylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one and processes for their preparation
    Patent number: 10919864
    Abstract: Provided herein are 5-fluoro-4-imino-3-(alkyl/substituted alkyl)-1-(arylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one and processes for their preparation which may include the use of an alkali carbonate and an alkylating agent
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: February 16, 2021
    Assignee: Adama Makhteshim Ltd.
    Inventors: Nakyen Choy, Ronald Ross, Jr.
  • MOLECULES HAVING PESTICIDAL UTILITY, AND INTERMEDIATES, COMPOSITIONS, AND PROCESSES, RELATED THERETO
    Publication number: 20200196607
    Abstract: This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
    Type: Application
    Filed: February 19, 2020
    Publication date: June 25, 2020
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Ronald J. Heemstra, Ronald Ross, JR., Kyle A. DeKorver, Kaitlyn Gray, Daniel I. Knueppel, Peter Vednor, Timothy P. Martin, Joseph D. Eckelbarger, John F. Daeuble, SR., Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich W. Baum, Zoltan L. Benko, Nakyen Choy, Gary D. Crouse, Fangzheng Li, Jeffrey Nissen, Monica B. Olson, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • 5-FLUORO-4-IMINO-3(ALKYL/SUBSTITUTED ALKYL)-1-(ARYLSULFONYL)-3,4-DIHYDROPYRIMIDIN-2(1H)-ONE AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20200148649
    Abstract: Provided herein are 5-fluoro-4-imino-3-(alkyl/substituted alkyl)-1-(arylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one and processes for their preparation which may include the use of an alkali carbonate and an alkylating agent
    Type: Application
    Filed: January 13, 2020
    Publication date: May 14, 2020
    Applicant: Adama Makhteshim Ltd.
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • Processes for the preparation of 4-alkoxy-3-hydroxypicolinic acids
    Patent number: 10550083
    Abstract: 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction that are conducted as a single pot process. 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: February 4, 2020
    Assignee: Dow AgroSciences LLC
    Inventors: Kenneth E. Stockman, Gregory T. Whiteker, Erich J. Molitor, Nakyen Choy
  • 5-FLUORO-4-IMINO-3(ALKYL/SUBSTITUTED ALKYL)-1-(ARYLSULFONYL)-3,4-DIHYDROPYRIMIDIN-2(1H)-ONE AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20200024238
    Abstract: Provided herein are 5-fluoro-4-imino-3-(alkyl/substituted alkyl)-1-(arylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one and processes for their preparation which may include the use of an alkali carbonate and an alkylating agent
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: Adama Makhteshim Ltd.
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • 5-FLUORO-4-IMINO-3(ALKYL/SUBSTITUTED ALKYL)-1-(ARYLSULFONYL)-3,4-DIHYDROPYRIMIDIN-2(1H)-ONE AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20190308941
    Abstract: Provided herein are 5-fluoro-4-imino-3-(alkyl/subsituted alkyl)-1-(arylsulfonyl)-3, 4-dihydropyrimidin-2(1H)-one and processes for their preparation which may include the use of an alkali carbonate and an alkylating agent
    Type: Application
    Filed: June 21, 2019
    Publication date: October 10, 2019
    Applicant: Adama Makhteshim Ltd.
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • Processes for the preparation of 4-alkoxy-3-(acyl or alkyl)oxypicolinamdes
    Patent number: 10358423
    Abstract: A fungicidal 4-methoxy-3-acetyloxypicolinamide may be conveniently prepared in processes that include the coupling together of 4-methoxy-3-acetyloxypicolinic acid or 4-methoxy-3-hydroxypicolinic acid with a key 2-aminopropanoate ester derived from a 1,1-bis(4-fluorophenyl)propane-1,2-diol.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: July 23, 2019
    Assignee: Dow AgroSciences LLC
    Inventors: Gregory T. Whiteker, Nakyen Choy, Peter Borromeo, Nicholas R. Babij, Gary Roth, Patrick S. Hanley, Matthias S. Ober, Tina Staton, Daniel I. Knueppel, Grant Von Wald, Nicole Hough
  • 2-(2,4-difluorophenyl)-1,1-difluoro-1-(5-substituted-pyridin-2-yl)-3-(1h-tetrazol-1-yl)propan-2-ols and processes for their preparation
    Patent number: 10301283
    Abstract: Provided herein are 2-(2,4-difluorophenyl)-1,1-difluoro-1-(5-substituted-pyridin-2-yl)-3-(1H-tetrazol-1-yl)propan-2-ols and 1-(2,4-difluorophenyl)-2,2-difluoro-2-(5-substituted-pyridin-2-yl)ethanones and processes for their preparation.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: May 28, 2019
    Assignee: Dow Agrosciences, LLC
    Inventors: William J. Hoekstra, Nakyen Choy, Carl DeAmicis, Daniel Knueppel, Jim Renga, Michael T. Sullenberger, Gregory Whiteker, Yuanming Zhu, Gary D. Gustafson
  • PROCESSES FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
    Publication number: 20190112271
    Abstract: 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction that are conducted as a single pot process. 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement.
    Type: Application
    Filed: January 23, 2017
    Publication date: April 18, 2019
    Inventors: Kenneth E. STOCKMAN, Gregory T. WHITEKER, Erich J. MOLITOR, Nakyen CHOY
  • Molecules having pesticidal utility, and intermediates, compositions, and processes, related thereto
    Publication number: 20190090488
    Abstract: This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
    Type: Application
    Filed: November 29, 2018
    Publication date: March 28, 2019
    Applicant: Dow AgroSciences LLC
    Inventors: Ronald J. Heemstra, Ronald Ross, JR., Kyle A. DeKorver, Kaitlyn Gray, Daniel I. Knueppel, Peter Vednor, Timothy P. Martin, Joseph D. Eckelbarger, John F. Daeuble, SR., Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich W. Baum, Zoltan L. Benko, Nakyen Choy, Gary D. Crouse, Fangzheng Li, Jeffrey Nissen, Monica B. Olson, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • Process for the preparation of (1R,3R)- and (1S,3S)-2,2-dihalo-3-(substituted phenyl)cyclopropanecarboxylic acids
    Patent number: 10239817
    Abstract: The (1R,3R)- or (1S,3S)-enantiomer of 2,2-dichloro-3-(substituted phenyl)cyclopropane-carboxylic acid is prepared in a process involving chemical resolution of a racemic mixture of a trans-2,2-dichloro-3-(substituted phenyl)cyclopropanecarboxylic acid with an enantiomeric amine, isolation of a diastereomeric amine salt and finally treatment of the salt with an acid.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: March 26, 2019
    Assignee: Dow AgroSciences LLC
    Inventors: Nakyen Choy, Fangzheng Li
  • Molecules having pesticidal utility, and intermediates, compositions, and processes, related thereto
    Patent number: 10219516
    Abstract: This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: March 5, 2019
    Assignee: Dow AgroSciences LLC
    Inventors: Ronald J. Heemstra, Ronald Ross, Jr., Kyle A. DeKorver, Kaitlyn Gray, Daniel I. Knueppel, Peter Vednor, Timothy P. Martin, Joseph D. Eckelbarger, John F. Daeuble, Sr., Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich W. Baum, Zoltan L. Benko, Nakyen Choy, Gary D. Crouse, Fangzheng Li, Jeffrey Nissen, Monica B. Olson, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • PROCESSES FOR THE PREPARATION OF 4-ALKOXY-3-(ACYL OR ALKYL)OXYPICOLINAMDES
    Publication number: 20180319750
    Abstract: A fungicidal 4-methoxy-3-acetyloxypicolinamide may be conveniently prepared in processes that include the coupling together of 4-methoxy-3-acetyloxypicolinic acid or 4-methoxy-3-hydroxypicolinic acid with a key 2-aminopropanoate ester derived from a 1,1-bis(4-fluorophenyl)propane-1,2-diol.
    Type: Application
    Filed: July 16, 2018
    Publication date: November 8, 2018
    Applicant: Dow AgroSciences LLC
    Inventors: Gregory T. Whiteker, Nakyen Choy, Peter Borromeo, Nicholas R. Babij, Gary Roth, Patrick S. Hanley, Matthias S. Ober, Tina Staton, Daniel I. Knueppel, Grant Von Wald, Nicole Hough
  • Processes for the preparation of 4-alkoxy-3-(acyl or alkyl)oxypicolinamdes
    Patent number: 10040764
    Abstract: A fungicidal 4-methoxy-3-acetyloxypicolinamide may be conveniently prepared in processes that include the coupling together of 4-methoxy-3-acetyloxypicolinic acid or 4-methoxy-3-hydroxypicolinic acid with a key 2-aminopropanoate ester derived from a 1,1-bis(4-fluorophenyl)propane-1,2-diol.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: August 7, 2018
    Assignee: Dow AgroSciences LLC
    Inventors: Gregory T. Whiteker, Nakyen Choy, Peter Borromeo, Nicholas R. Babij, Gary Roth, Patrick S. Hanley, Matthias S. Ober, Tina Staton, Daniel I. Knueppel, Grant Von Wald, Nicole Hough
  • Processes for the preparation of 4-alkoxy-3-(acyl or alkyl)oxypicolinamides
    Patent number: 10035772
    Abstract: A fungicidal 4-methoxy-3-acetyloxypicolinamide may be conveniently prepared in processes that include the coupling together of 4-methoxy-3-acetyloxypicolinic acid or 4-methoxy-3-hydroxypicolinic acid with a key 2-aminopropanoate ester derived from a 1,1-bis(4-fluorophenyl)propane-1,2-diol.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: July 31, 2018
    Assignee: Dow AgroSciences LLC
    Inventors: Gregory T. Whiteker, Nakyen Choy, Peter Borromeo, Nicholas R. Babij
  • 2-(2,4-DIFLUOROPHENYL)-1,1-DIFLUORO-1-(5-SUBSTITUTED-PYRIDIN-2-YL)-3-(1H-TETRAZOL-1-YL)PROPAN-2-OLS AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20180155324
    Abstract: Provided herein are 2-(2,4-difluorophenyl)-1,1-difluoro-1-(5-substituted-pyridin-2-yl)-3-(1H-tetrazol-1-yl)propan-2-ols and 1-(2,4-difluorophenyl)-2,2-difluoro-2-(5-substituted-pyridin-2-yl)ethanones and processes for their preparation.
    Type: Application
    Filed: February 1, 2018
    Publication date: June 7, 2018
    Inventors: William J. Hoekstra, Nakyen Choy, Carl DeAmicis, Daniel Knueppel, Jim Renga, Michael T. Sullenberger, Gregory Whiteker, Yuanming Zhu, Gary D. Gustafson
  • 2-(2,4-difluorophenyl)-1,1-difluoro-1-(5-substituted-pyridin-2-yl)-3-(1H-tetrazol-1-yl)propan-2-ols and processes for their preparation
    Patent number: 9988365
    Abstract: Provided herein are 2-(2,4-difluorophenyl)-1,1-difluoro-1-(5-substituted-pyridin-2-yl)-3-(1H-tetrazol-1-yl)propan-2-ols and 1-(2,4-difluorophenyl)-2,2-difluoro-2-(5-substituted-pyridin-2-yl)ethanones and processes for their preparation.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 5, 2018
    Assignee: VPS-3, Inc.
    Inventors: William J. Hoekstra, Nakyen Choy, Carl DeAmicis, Daniel Knueppel, Jim Renga, Michael T. Sullenberger, Gregory Whiteker, Yuanming Zhu, Gary D. Gustafson