Patents by Inventor Fangzheng Li

Fangzheng Li 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).

  • Publication number: 20230357155
    Abstract: The present disclosure relates to improved processes for preparing 4-amino-6-(heterocyclic)picolinates.
    Type: Application
    Filed: March 17, 2021
    Publication date: November 9, 2023
    Applicant: CORTEVA AGRISCIENCE LLC
    Inventors: BELGIN CANTURK, JAYACHANDRAN DEVARAJ, AMARUKA HAZARI, CHRISTOPHER KASSL, MELISSA LEE, FANGZHENG LI, CHRISTIAN T. LOWE, THOMAS L. SIDDALL, GREGORY T. WHITEKER, CHUNMING ZHANG
  • 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
  • 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
  • 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
  • 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
  • Patent number: 10259789
    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. 4-Alkoxy-3-acetoxypicolinic acids may be conveniently prepared from 4-alkoxy-3-hydroxypicolinic acids by treatment with acetic anhydride.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: April 16, 2019
    Inventors: Gregory T. Whiteker, Peter Borromeo, Fangzheng Li, Gary Roth
  • 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
  • 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
  • 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
  • Publication number: 20190047962
    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. 4-Alkoxy-3-acetoxypicolinic acids may be conveniently prepared from 4-alkoxy-3-hydroxypicolinic acids by treatment with acetic anhydride.
    Type: Application
    Filed: January 23, 2017
    Publication date: February 14, 2019
    Inventors: Gregory T. WHITEKER, Peter BORROMEO, Fangzheng LI, Gary ROTH
  • Publication number: 20180099919
    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: Application
    Filed: October 9, 2017
    Publication date: April 12, 2018
    Applicant: Dow AgroSciences LLC
    Inventors: Nakyen Choy, Fangzheng Li
  • Publication number: 20180007911
    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: September 15, 2017
    Publication date: January 11, 2018
    Applicant: Dow AgroSciences LLC
    Inventors: Timothy P. Martin, Joseph D. Eckelbarger, Ronald Ross, JR., Kyle A. DeKorver, Ronald J. Heemstra, Daniel I. Knueppel, Peter Vednor, Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich W. Baum, Zoltan L. Benko, Nakyen Choy, Gary D. Crouse, John F. Daeuble, SR., Fangzheng Li, Jeffrey Nissen, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • Publication number: 20180002320
    Abstract: This disclosure relates to macrocyclic picolinamides of Formula I and their use as fungicides.
    Type: Application
    Filed: December 21, 2015
    Publication date: January 4, 2018
    Inventors: Jeremy WILMOT, Jessica HERRICK, David M. JONES, Kevin G. MEYER, Chenglin YAO, Amela ARNOLD, Johnathan E. DELORBE, Rebecca Lyn K.C. LALONDE, James M. RENGA, John F. DAEUBLE, Sr., Fangzheng LI, Karla BRAVO-ALTAMIRANO
  • Publication number: 20180002319
    Abstract: This disclosure relates to macrocyclic picolinamides of Formula I and their use as fungicides.
    Type: Application
    Filed: December 21, 2015
    Publication date: January 4, 2018
    Inventors: Jeremy WILMOT, Jessica HERRICK, David M. JONES, Kevin G. MEYER, Chenglin YAO, Amela ARNOLD, Johnathan E. DELORBE, Rebecca Lyn K.C. LALONDE, James M. RENGA, John F. DAEUBLE, Sr., Fangzheng LI, Karla BRAVO-ALTAMIRANO
  • Publication number: 20180000087
    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: September 15, 2017
    Publication date: January 4, 2018
    Applicant: Dow AgroSciences LLC
    Inventors: Joseph D. Eckelbarger, Daniel I. Knueppel, Ronald J. Heemstra, Ronald Ross, JR., Kyle A. DeKorver, Kaitlyn Gray, Peter Vednor, Timothy P. Martin, Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich W. Baum, Zoltan L. Benko, Nakyen Choy, Gary D. Crouse, John F. Daeuble, SR., Fangzheng Li, Jeffrey Nissen, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • Publication number: 20170339961
    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: August 17, 2017
    Publication date: November 30, 2017
    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
  • Patent number: 9795139
    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: April 7, 2016
    Date of Patent: October 24, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Joseph D. Eckelbarger, Daniel I. Knueppel, Ronald J. Heemstra, Ronald Ross, Jr., Kyle A. Dekorver, Kaitlyn Gray, Peter Vednor, Timothy P. Martin, Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich Baum, Zoltan L. Benko, Nakyen Choy, Gary Crouse, John F. Daeuble, Sr., Fangzheng Li, Jeff Nissen, Michelle Riener, Tom Sparks, Frank Wessels, Maurice Yap
  • Patent number: 9795140
    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: April 7, 2016
    Date of Patent: October 24, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Timothy P. Martin, Joseph D. Eckelbarger, Ronald Ross, Jr., Kyle DeKorver, Ronald J. Heemstra, Daniel I. Knueppel, Peter Vednor, Ricky Hunter, David A. Demeter, Tony K. Trullinger, Erich Baum, Zoltan Benko, Nakyen Choy, Gary Crouse, John F. Daeuble, Sr., Fangzheng Li, Jeff Nissen, Michelle Riener, Tom Sparks, Frank Wessels, Maurice Yap
  • Patent number: 9781935
    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: April 7, 2016
    Date of Patent: October 10, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Ronald J. Heemstra, Ronald Ross, Jr., Kyle 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 Baum, Zoltan L. Benko, Nakyen Choy, Gary Crouse, Fangzheng Li, Jeff Nissen, Monica B. Olson, Michelle Riener, Thomas C. Sparks, Frank J. Wessels, Maurice C. Yap
  • Publication number: 20170273306
    Abstract: The disclosure relates to macrocyclic picolinamides of Formula (I) and to the use of these compounds as fungicides.
    Type: Application
    Filed: June 6, 2017
    Publication date: September 28, 2017
    Inventors: Rebecca LaLonde, Kevin G. Meyer, Fangzheng Li, Jeremy Wilmot, Karla Bravo-Altamirano, Chenglin Yao, Iain O'Callaghan, Jessica Herrick, Kyle A. DeKorver, Yu Lu