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).

  • Publication number: 20160302418
    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: April 7, 2016
    Publication date: October 20, 2016
    Applicant: 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
  • Publication number: 20160304522
    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: April 7, 2016
    Publication date: October 20, 2016
    Applicant: 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: 20160302417
    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: April 7, 2016
    Publication date: October 20, 2016
    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 Baum, Zoltan L. Benko, Nakyen Choy, Gary Crouse, John F. Daeuble, SR., Fangzheng Li, Jeff Nissen, Michelle Riener, Tom Sparks, Frank Wessels, Maurice Yap
  • Publication number: 20160280662
    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: June 3, 2016
    Publication date: September 29, 2016
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • Publication number: 20160280663
    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 alkoxide and an alkylating agent
    Type: Application
    Filed: June 3, 2016
    Publication date: September 29, 2016
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • Publication number: 20160009676
    Abstract: 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-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.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy
  • Publication number: 20160009650
    Abstract: 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-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.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy, Kenneth E. Stockman
  • Publication number: 20160009649
    Abstract: 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: July 8, 2015
    Publication date: January 14, 2016
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy
  • Publication number: 20150183750
    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 alkoxide and an alkylating agent
    Type: Application
    Filed: December 29, 2014
    Publication date: July 2, 2015
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • Publication number: 20150183749
    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: December 29, 2014
    Publication date: July 2, 2015
    Inventors: Nakyen Choy, Ronald Ross, JR.
  • Patent number: 8633321
    Abstract: The present invention is an improved method for the preparation of (4-fluoro-3-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester, compound of formula I. The invention is directed to a method of synthesis for the compound of formula I in three steps, comprising formation of 5-((tert-butoxycarbonyl)aminomethyl)-2-fluorobenzeneboronic acid (compound 11), reaction of compound 11 under Suzuki coupling conditions to yield (4-fluoro-2-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester and selective hydrogenation of the aforementioned product under hydrogenation conditions yields compound I. The invention is also directed to the intermediates 5-((tert-butoxycarbonyl)amino-methyl)-2-fluorobenzeneboronic acid (compound 11), and (4-fluoro-3-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester (compound 13).
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 21, 2014
    Assignee: Sanofi-Aventis U.S. LLC
    Inventors: Nakyen Choy, John J. Shay, Jr., Adam W. Sledeski
  • Patent number: 8497379
    Abstract: The present invention is directed to a method for the preparation of 2,2,2-trifluoro-n-(4-fluoro-3-pyridin-4-yl-benzyl)-acetamide hydrochloride of the formula: and reaction intermediates used in the method.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: July 30, 2013
    Assignee: Sanofi
    Inventors: Yong Mi Choi-Sledeski, Nakyen Choy, Gregory B. Poli, John J. Shay, Jr., Patrick Wai-Kwok Shum, Adam W. Sledeski
  • Publication number: 20120283445
    Abstract: The present invention is directed to an indole benzylamine compound of formula I: useful as an inhibitor of tryptase. In addition, the present invention is directed to the use of the compound for treating a patient suffering from, or subject to, a physiological condition in need of amelioration by inhibition of tryptase, comprising administering to the patient of a therapeutically effective amount of the compound, and to a pharmaceutical composition comprising a pharmaceutically effective amount of the compound of formula I, and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: June 27, 2012
    Publication date: November 8, 2012
    Applicant: SANOFI
    Inventors: Yong Mi CHOI-SLEDESKI, Nakyen CHOY, Gregory Bernard POLI, John J. SHAY, JR., Patrick Wai-Kwok SHUM, Adam W. SLEDESKI
  • Publication number: 20120184745
    Abstract: The present invention is an improved method for the preparation of 4-fluoro-3-piperidin-4-yl-benzyl)-carbamic acid tert-butyl ester, compound of formula I. The invention is directed to a method of synthesis for the compound of formula I in three steps, comprising formation of 5-((tert-butoxycarbonyl)aminomethyl)-2-fluorobenzeneboronic acid (compound 11), reaction of compound 11 under Suzuki coupling conditions to yield (4-fluoro-2-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester and selective hydrogenation of the aforementioned product under hydrogenation conditions yields compound I. The invention is also directed to the intermediates 5-((tert-butoxycarbonyl)amino-methyl)-2-fluorobenzeneboronic acid (compound 11), and (4-fluoro-2-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester (compound 13).
    Type: Application
    Filed: March 22, 2012
    Publication date: July 19, 2012
    Applicant: SANOFI-AVENTIS U.S. LLC
    Inventors: Nakyen CHOY, John J. SHAY, JR., Adam W. SLEDESKI
  • Patent number: 8217178
    Abstract: The present invention is directed to an indole benzylamine compound of formula I: useful as an inhibitor of tryptase. In addition, the present invention is directed to the use of the compound for treating a patient suffering from, or subject to, a physiological condition in need of amelioration by inhibition of tryptase, comprising administering to the patient of a therapeutically effective amount of the compound, and to a pharmaceutical composition comprising a pharmaceutically effective amount of the compound of formula I, and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: July 10, 2012
    Assignee: Sanofi
    Inventors: Yong Mi Choi-Sledeski, Nakyen Choy, Gregory Bernard Poli, John J. Shay, Jr., Patrick Wai-Kwok Shum, Adam W. Sledeski
  • Publication number: 20110201647
    Abstract: The present invention is directed to an indole benzylamine compound of formula I: useful as an inhibitor of tryptase. In addition, the present invention is directed to the use of the compound for treating a patient suffering from, or subject to, a physiological condition in need of amelioration by inhibition of tryptase, comprising administering to the patient of a therapeutically effective amount of the compound, and to a pharmaceutical composition comprising a pharmaceutically effective amount of the compound of formula I, and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: February 16, 2011
    Publication date: August 18, 2011
    Inventors: Yong Mi CHOI-SLEDESKI, Nakyen CHOY, Gregory Bernard POLI, John J. SHAY, JR., Patrick Wai-Kwok SHUM, Adam W. SLEDESKI
  • Patent number: 7968736
    Abstract: A compound of the following structure: wherein R1 is H, an alkyl group, an aryl group, an alkenyl group, an alkynyl group, or a halogen atom; R2 is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiRaRbRc, CH2ORd, or CORe; Ra, Rb and Rc are independently an alkyl group or an aryl group; Rd is an alkyl group, an aryl group, an alkoxylalkyl group, —RiSiRaRbRc or a benzyl group, wherein Ri is an alkylene group; Re is an alkyl group, an allyl group, a benzyl group, an aryl group, an alkoxy group, or —NRgRh, wherein Rg and Rh are independently H, an alkyl group or an aryl group; R3 is (CH2)n where n is and integer in the range of 0 to 5, —CH2CH(CH3)—, —CH?CH—, —CH?C(CH3)—, or —C?C—; R4 ?wherein y1 and y2 are 1 and y3, y4 and y5 are independently 0 or 1, Rk1, Rk2, Rk3, Rk4 and Rk5 are independently H, CH3, or OR2a, and Rs1, Rs2, Rs3, and Rs4 are independently H or CH3, wherein R2a is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiRaRbRc, CH2ORd, or CORe; and R5 is
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: June 28, 2011
    Assignee: University of Pittsburgh—of the Commonwelth Systems of Higher Education
    Inventors: Dennis P. Curran, Youseung Shin, Nakyen Choy, Billy W Day, Raghavan Balachandran, Charitha Madiraju, Tiffany Turner
  • Publication number: 20100174088
    Abstract: The present invention is an improved process for the preparation of a sodium/proton exchange inhibitor of sub-type 3 (NHE-3) useful in the treatment of sleep apnea and other related respiratory disorders.
    Type: Application
    Filed: December 14, 2009
    Publication date: July 8, 2010
    Applicant: SANOFI-AVENTIS U.S. LLC
    Inventors: Timothy Allen Ayers, Nakyen Choy, Harpal S. Gill, Andrea Hillegass, John J. Shay, JR., Volker Derdau
  • Publication number: 20090036691
    Abstract: A compound of the following structure: wherein R1 is H, an alkyl group, an aryl group, an alkenyl group, an alkynyl group, or a halogen atom; R2 is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiRaRbRc, CH2ORd, or CORe; Ra, Rb and Rc are independently an alkyl group or an aryl group; Rd is an alkyl group, an aryl group, an alkoxylalkyl group, —RiSiRaRbRc or a benzyl group, wherein Ri is an alkylene group; Re is an alkyl group, an allyl group, a benzyl group, an aryl group, an alkoxy group, or —NRgRh, wherein Rg and Rh are independently H, an alkyl group or an aryl group; R3 is (CH2)n where n is and integer in the range of 0 to 5, —CH2CH(CH3)—, —CH?CH—, —CH?C(CH3)—, or —C?C—; R4 , wherein y1 and y2 are 1 and y3, y4 and y5 are independently 0 or 1, Rk1, Rk2, Rk3, Rk4 and Rk5 are independently H, CH3, or OR2a, and Rs1, Rs2, Rs3, and Rs4 are independently H or CH3, wherein R2a is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiRaRbRc, CH2ORd, or CORe; and R5 is
    Type: Application
    Filed: September 23, 2008
    Publication date: February 5, 2009
    Inventors: DENNIS P. CURRAN, YOUSEUNG SHIN, NAKYEN CHOY, BILLY W. DAY, RAGHAVAN BALACHANDRAN, CHARITHA MADIRAJU, TIFFANY TURNER
  • Publication number: 20060270862
    Abstract: A compound of the following structure: wherein R1 is H, an alkyl group, an aryl group, an alkenyl group, an alkynyl group, or a halogen atom; R2 is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiRaRbRc, CH2ORd, or CORe; Ra, Rb and Rc are independently an alkyl group or an aryl group; Rd is an alkyl group, an aryl group, an alkoxylalkyl group, —RiSiRaRbRc or a benzyl group, wherein Ri is an alkylene group; Re is an alkyl group, an allyl group, a benzyl group, an aryl group, an alkoxy group, or —NRgRh, wherein Rg and Rh are independently H, an alkyl group or an aryl group; R3 is (CH2)n where n is and integer in the range of 0 to 5, —CH2CH(CH3)—, —CH?CH—, —CH?C(CH3)—, or —C?C—; R4 is (CH2)p where p is an integer in the range of 4 to 12, —(CHRk1)y1(CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5C(Rs1)?C(Rs2)C(Rs3)?C(Rs4)—, —(CHRk1)y1(CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5CH(Rs1)CH(Rs2)C(Rs3)?C(Rs4)—, —(CHRk1)y1(CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5C(Rs1)?C(Rs2)CH(Rs3)CH(Rs4)—, —(CHRk1)y1(CHRk2)y2(
    Type: Application
    Filed: August 2, 2006
    Publication date: November 30, 2006
    Inventors: Dennis Curran, Youseung Shin, Nakyen Choy, Billy Day, Raghavan Balachandran, Charitha Madiraju, Tiffany Turner