Patents by Inventor Todd William Toyzan

Todd William Toyzan 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: 20220041574
    Abstract: This application relates to efficient and economical synthetic chemical processes for the preparation of pesticidal thioethers. Specifically, the present application relates to improved reactive crystallization methods for producing compounds useful in the preparation of pesticidal thioethers.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 10, 2022
    Applicant: CORTEVA AGRISCIENCE LLC
    Inventors: DEBOLEENA CHAKRABORTY, XIAOYONG LI, TODD WILLIAM TOYZAN, RONALD B. LENG
  • Publication number: 20200071290
    Abstract: This application relates to efficient and economical synthetic chemical processes for the preparation of pesticidal thioethers. Specifically, the present application relates to improved reactive crystallization methods for producing compounds useful in the preparation of pesticidal thioethers.
    Type: Application
    Filed: May 24, 2018
    Publication date: March 5, 2020
    Applicant: Dow AgroSciences LLC
    Inventors: Deboleen Chakraborty, Xiaoyong Li, Todd William Toyzan, Ronald B Leng
  • Publication number: 20150329507
    Abstract: The invention disclosed in this document is related to the field of processes for the preparation of enamines wherein R1, R2, R3, R4, R5, and further information are disclosed herein.
    Type: Application
    Filed: July 24, 2015
    Publication date: November 19, 2015
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Douglas C. Bland, Todd William Toyzan, Ronald B. Leng, James R. McConnell
  • Publication number: 20150329509
    Abstract: The invention disclosed in this document is related to the field of processes for the preparation of enamines wherein R1, R2, R3, R4, R5, and further information are disclosed herein.
    Type: Application
    Filed: July 24, 2015
    Publication date: November 19, 2015
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Douglas C. Bland, Todd William Toyzan
  • Publication number: 20150329508
    Abstract: The invention disclosed in this document is related to the field of processes for the preparation of enamines wherein R1, R2, R3, R4, R5, and further information are disclosed herein.
    Type: Application
    Filed: July 24, 2015
    Publication date: November 19, 2015
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Douglas C. Bland, Todd William Toyzan
  • Patent number: 9187403
    Abstract: The instant invention provides a process for separating one or more aliphatic diamines from reductive amination reaction solvents and impurities, and aliphatic diamines obtained via such a process. The process for separating one or more aliphatic diamines from reductive amination reaction solvents and impurities according to the instant invention comprises the steps of: (1) feeding one or more cycloaliphatic cyanoaldehydes, hydrogen, ammonia, and optionally one or more solvents into a continuous reductive amination reactor system; (2) contacting said one or more cycloaliphatic cyanoaldehydes, hydrogen, and ammonia with each other in the presence of one or more heterogeneous metal based catalyst systems at a temperature in the range of from 80° C. to about 160° C.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 17, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Stacie Santhany, Patrick Ho Sing Au-Yeung, Gerald W. Dare, Shawn D. Feist, Barry B. Fish, Daniel A. Hickman, David Jean, Erich J. Molitor, Abraham D. Schuitman, Todd William Toyzan
  • Publication number: 20120116123
    Abstract: The instant invention provides a process for separating one or more aliphatic diamines from reductive amination reaction solvents and impurities, and aliphatic diamines obtained via such a process. The process for separating one or more aliphatic diamines from reductive amination reaction solvents and impurities according to the instant invention comprises the steps of: (1) feeding one or more cycloaliphatic cyanoaldehydes, hydrogen, ammonia, and optionally one or more solvents into a continuous reductive amination reactor system; (2) contacting said one or more cycloaliphatic cyanoaldehydes, hydrogen, and ammonia with each other in the presence of one or more heterogeneous metal based catalyst systems at a temperature in the range of from 80° C. to about 160° C.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 10, 2012
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Stacie Santhany, Patrick Ho Sing Au-Yeung, Gerald W. Dare, Shawn D. Feist, Barry B. Fish, Daniel A. Hickman, David Jean, Erich J. Molitor, Abraham D. Schuitman, Todd William Toyzan