Patents by Inventor Mark Q. Nguyen

Mark Q. Nguyen 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).

  • EXTERNAL WORKING CHANNELS
    Publication number: 20240081619
    Abstract: Apparatuses (e.g., devices, systems, etc.) and methods that may provide access to one or more tools to a remote site in the body including expandable and external working channels that may be part of a tube that is coupled to an outer surface of an elongate medical device, such as an endoscope.
    Type: Application
    Filed: August 18, 2023
    Publication date: March 14, 2024
    Inventors: Alexander Q. TILSON, Mark C. SCHEEFF, Garrett J. GOMES, Francisco G. LOPEZ, Justin KIRSCHBROWN, Wei Li FAN, William EVANS, Viet Anh NGUYEN, Stephan T. HOFFMANN, Kassidy MACPHAIL, Thomas HSIU
  • Methods of synthesizing a levodopa ester prodrug
    Patent number: 9533941
    Abstract: Methods of synthesizing a levodopa ester prodrug, salts thereof, and synthetic intermediates thereof are disclosed.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 3, 2017
    Assignee: XENOPORT, INC.
    Inventors: Stephen P. Raillard, Adam Mann, Suresh K. Manthati, Randall A. Scheuerman, Tono Estrada, Mark Q. Nguyen, Cindy X. Zhou
  • METHODS OF SYNTHESIZING A LEVODOPA ESTER PRODRUG
    Publication number: 20160176804
    Abstract: Methods of synthesizing a levodopa ester prodrug, salts thereof, and synthetic intermediates thereof are disclosed.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 23, 2016
    Inventors: STEPHEN P. RAILLARD, ADAM MANN, SURESH K. MANTHATI, RANDALL A. SCHEUERMAN, TONO ESTRADA, MARK Q. NGUYEN, CINDY X. ZHOU
  • Methods of synthesizing a levodopa ester prodrug
    Patent number: 9290445
    Abstract: Methods of synthesizing a levodopa ester prodrug, salts thereof, and synthetic intermediates thereof are disclosed.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: March 22, 2016
    Assignee: XenoPort, Inc.
    Inventors: Stephen P. Raillard, Adam Mann, Suresh K. Manthati, Randall A. Scheuerman, Tono Estrada, Mark Q. Nguyen, Cindy X Zhou
  • Levodopa dimethyl-substituted diester prodrugs, compositions, and methods of use
    Patent number: 8324272
    Abstract: Levodopa dimethyl-substituted diester prodrugs pharmaceutical, compositions comprising levodopa dimethyl-substituted diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: December 4, 2012
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • Catechol protected levodopa diester prodrugs, compositions, and methods of use
    Patent number: 8324273
    Abstract: Catechol protected levodopa diester prodrugs pharmaceutical, compositions comprising catechol protected levodopa diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: December 4, 2012
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • Levodopa Prodrugs, and Compositions and Uses Thereof
    Publication number: 20120296109
    Abstract: (2R)-2-Phenylcarbonyloxypropyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 22, 2012
    Applicant: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Xuedong Dai, Cindy X. Zhou, Jianhua Li, Mark Q. Nguyen
  • Levodopa prodrug mesylate, compositions thereof, and uses thereof
    Patent number: 8193242
    Abstract: (2R)-2-Phenylcarbonyloxypropyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: June 5, 2012
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Xuedong Dai, Cindy X. Zhou, Jianhua Li, Mark Q. Nguyen
  • Levodopa prodrug mesylate, compositions thereof, and uses thereof
    Patent number: 7968597
    Abstract: (2R)-2-Phenylcarbonyloxypropyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: June 28, 2011
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Xuedong Dai, Cindy X. Zhou, Jianhua Li, Mark Q. Nguyen
  • LEVODOPA PRODRUG MESYLATE, COMPOSITIONS THEREOF, AND USES THEREOF
    Publication number: 20110111062
    Abstract: (2R)-2-Phenylcarbonyloxypropyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Application
    Filed: January 20, 2011
    Publication date: May 12, 2011
    Inventors: Jia-Ning XIANG, Xuedong DAI, Cindy X. ZHOU, Jianhua LI, Mark Q. NGUYEN
  • Levodopa prodrug mesylate, compositions thereof, and uses thereof
    Patent number: 7893105
    Abstract: (2R)-2-Phenylcarbonyloxypropyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: February 22, 2011
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Xuedong Dai, Cindy X. Zhou, Jianhua Li, Mark Q. Nguyen
  • CATECHOL PROTECTED LEVODOPA DIESTER PRODRUGS, COMPOSITIONS, AND METHODS OF USE
    Publication number: 20110028544
    Abstract: Catechol protected levodopa diester prodrugs pharmaceutical, compositions comprising catechol protected levodopa diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Application
    Filed: October 14, 2010
    Publication date: February 3, 2011
    Applicant: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • Catechol protected levodopa diester prodrugs, compositions, and methods of use
    Patent number: 7829592
    Abstract: Catechol protected levodopa diester prodrugs pharmaceutical, compositions comprising catechol protected levodopa diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 9, 2010
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • LEVODOPA DIMETHYL-SUBSTITUTED DIESTER PRODRUGS, COMPOSITIONS, AND METHODS OF USE
    Publication number: 20100173992
    Abstract: Levodopa dimethyl-substituted diester prodrugs pharmaceutical, compositions comprising levodopa dimethyl-substituted diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Application
    Filed: March 18, 2010
    Publication date: July 8, 2010
    Applicant: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • Levodopa dimethyl-substituted diester prodrugs compositions, and methods of use
    Patent number: 7709527
    Abstract: Levodopa dimethyl-substituted diester prodrugs pharmaceutical, compositions comprising levodopa dimethyl-substituted diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: May 4, 2010
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • Methods of Synthesizing a Levodopa Ester Prodrug
    Publication number: 20100099907
    Abstract: Methods of synthesizing a levodopa ester prodrug, salts thereof, and synthetic intermediates thereof are disclosed.
    Type: Application
    Filed: October 19, 2009
    Publication date: April 22, 2010
    Inventors: Stephen P. Raillard, Adam Mann, Suresh K. Manthati, Randall A. Scheuerman, Tono Estrada, Mark Q. Nguyen, Cindy X. Zhou
  • Levodopa Prodrug Mesylate, Compositions Thereof, and Uses Thereof
    Publication number: 20090326067
    Abstract: (2R)-2-Phenylcarbonyloxypropyl(2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 31, 2009
    Applicant: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Xuedong Dai, Cindy X. Zhou, Jianhua Li, Mark Q. Nguyen
  • Levodopa prodrug mesylate, compositions thereof, and uses thereof
    Patent number: 7563821
    Abstract: (2R)-2-Phenylcarbonyloxypropyl(2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoate mesylate and crystalline form thereof, methods of making the same, pharmaceutical compositions thereof, and methods of using the same to treat diseases or disorders such as Parkinson's disease are provided.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: July 21, 2009
    Assignee: XenoPort, Inc.
    Inventors: Jia-Ning Xiang, Xuedong Dai, Cindy X. Zhou, Jianhua Li, Mark Q. Nguyen
  • Levodopa dimethyl-substituted diester prodrugs compositions, and methods of use
    Publication number: 20080214663
    Abstract: Levodopa dimethyl-substituted diester prodrugs pharmaceutical, compositions comprising levodopa dimethyl-substituted diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Application
    Filed: December 20, 2007
    Publication date: September 4, 2008
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen
  • Catechol protected levodopa diester prodrugs, compositions, and methods of use
    Publication number: 20080171789
    Abstract: Catechol protected levodopa diester prodrugs pharmaceutical, compositions comprising catechol protected levodopa diester prodrugs, and methods of using such prodrugs and pharmaceutical compositions for treating diseases such as Parkinson's disease are provided.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 17, 2008
    Inventors: Jia-Ning Xiang, Cindy X. Zhou, Fenmei Yao, Mark Q. Nguyen