Patents by Inventor Cynthia Arndt

Cynthia Arndt 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).

  • Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates
    Patent number: 9598368
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, reaction with hydrazine, halogenation, hydrolysis and esterification, and transition metal assisted coupling.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: March 21, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Yuanming Zhu, Gregory T. Whiteker, Cynthia Arndt, James M. Renga, Robert D. J. Froese
  • Process for the preparation of 4-amino-5-fluoro-3-halo-6-(substituted)picolinates
    Patent number: 8754231
    Abstract: 4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation, nitrile hydrolysis, esterification, and transition metal assisted coupling.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: June 17, 2014
    Assignee: Dow AgroSciences, LLC.
    Inventors: Yuanming Zhu, Gregory T. Whiteker, James M. Renga, Gary A. Roth, David E. Podhorez, Scott P. West, Cynthia Arndt
  • Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted) picolinates
    Patent number: 8609853
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, reaction with hydrazine, halogenation, hydrolysis and esterification, and transition metal assisted coupling.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: December 17, 2013
    Assignee: Dow AgroSciences, LLC.
    Inventors: Yuanming Zhu, Gregory T. Whiteker, James M. Renga, Robert D. Froese, Cynthia Arndt
  • Process for the preparation of 4-amino-5-fluoro-3-halo-6-(substituted)picolinates
    Patent number: 8609855
    Abstract: 4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinates by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation and transition metal assisted coupling.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: December 17, 2013
    Assignee: Dow AgroSciences, LLC.
    Inventors: Gregory T. Whiteker, James M. Renga, Yuanming Zhu, Christian T. Lowe, Thomas L. Siddall, David E. Podhorez, Gary A. Roth, Scott P. West, Cynthia Arndt
  • PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-HALO-6-(SUBSTITUTED)PICOLINATES
    Publication number: 20120190860
    Abstract: 4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinates by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation and transition metal assisted coupling.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Gregory T. Whiteker, Kim E. Arndt, James M. Renga, Yuanming Zhu, Christian T. Lowe, Thomas L. Siddall, David E. Podhorez, Gary A. Roth, Scott P. West, Cynthia Arndt
  • PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-HALO-6-(SUBSTITUTED)PICOLINATES
    Publication number: 20120190859
    Abstract: 4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation, nitrile hydrolysis, esterification, and transition metal assisted coupling.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Applicant: Dow AgroSciences LLC
    Inventors: Yuanming Zhu, Gregory T. Whiteker, James M. Renga, Kim E. Arndt, Gary A. Roth, David E. Podhorez, Scott P. West, Cynthia Arndt
  • PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
    Publication number: 20120190857
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange and hydrolysis, esterification and transition metal assisted coupling.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Kim E. Arndt, James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Christian T. Lowe, Cynthia Arndt
  • PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
    Publication number: 20120190858
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, reaction with hydrazine, halogenation, hydrolysis and esterification, and transition metal assisted coupling.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Yuanming Zhu, Gregory T. Whiteker, Kim E. Arndt, Cynthia Arndt, James M. Renga, Robert D. Froese