Patents by Inventor Andrew Xian Chen

Andrew Xian Chen 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: 20170056326
    Abstract: The present invention provides a clear depot comprising at least one hydrophilic water-soluble pharmaceutically active agent selected from the group consisting of vancomycin, gentamicin, a pharmaceutically acceptable salt thereof and a mixture thereof, water, a phospholipid, an oil, optionally a pH adjusting agent, and a viscosity modifying agent selected from the group consisting of ethanol, isopropanol, and a mixture thereof, wherein the water present in the depot is no more than about 4 wt % relative to the total weight of the depot and the depot has a pH of between about 3 and about 6, method of making and administering same.
    Type: Application
    Filed: November 10, 2016
    Publication date: March 2, 2017
    Inventors: Hailiang Chen, Andrew Xian Chen, Dushyanth Surakanti, Franklin Okumu
  • Patent number: 9522169
    Abstract: The present invention provides a clear depot comprising at least one hydrophilic water-soluble pharmaceutically active agent selected from the group consisting of vancomycin, gentamicin, a pharmaceutically acceptable salt thereof and a mixture thereof, water, a phospholipid, an oil, optionally a pH adjusting agent, and a viscosity modifying agent selected from the group consisting of ethanol, isopropanol, and a mixture thereof, wherein the water present in the depot is no more than about 4 wt % relative to the total weight of the depot and the depot has a pH of between about 3 and about 6, method of making and administering same.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: December 20, 2016
    Assignee: Dr. Reddy's Laboratories Ltd.
    Inventors: Hailiang Chen, Andrew Xian Chen, Dushyanth Surakanti, Franklin Okumu
  • Patent number: 9517202
    Abstract: The present invention is directed to phospholipid compositions and methods of preparation of phospholipid depots that are injectable through a fine needle. The phospholipid depots prepared by the methods described herein comprise nanometer-sized phospholipid particles and exhibit a higher degree of structural order compared to compositions prepared by other methods.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: December 13, 2016
    Assignee: LATITUDE PHARMACEUTICALS INC.
    Inventors: Andrew Xian Chen, Hailiang Chen
  • Publication number: 20160354390
    Abstract: Parenteral (injectable) celecoxib emulsions and nanoemulsions are disclosed as are their use to treat pain in patients so afflicted. The emulsions are generally oil in water emulsions often comprised of an oil phase including an oil and a lecithin wherein the mean droplet size of the discontinuous oil phase is about 200 nanometers or less.
    Type: Application
    Filed: August 18, 2016
    Publication date: December 8, 2016
    Applicant: Dr. Reddy's Laboratories Ltd.
    Inventors: Franklin Okumu, Jan-Jon Chu, Julie Ann Webb, Rafael Anthony Sabino, Andrew Xian Chen
  • Patent number: 9446056
    Abstract: Parenteral (injectable) celecoxib emulsions and nanoemulsions are disclosed as are their use to treat pain in patients so afflicted. The emulsions are generally oil in water emulsions often comprised of an oil phase including an oil and a lecithin wherein the mean droplet size of the discontinuous oil phase is about 200 nanometers or less.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: September 20, 2016
    Assignee: Dr. Reddy's Laboratories Ltd.
    Inventors: Franklin Okumu, Jan-Jon Chu, Julie Ann Webb, Rafael Anthony Sabino, Andrew Xian Chen
  • Patent number: 9375402
    Abstract: The invention is directed to formulations of bioactive compounds of limited water solubility, inhibitors of focal adhesion kinase (FAK) of the 2,4-diaminopyridine class, adapted for oral administration to patients. The formulations are self-emulsifying in the gastrointestinal tract of the patients, providing enhanced absorption and bioavailability of the bioactive compounds as dispersions or emulsions in an oil base. For example, esters of PEG-ylated glycerol can be used as the oil, in conjunction with surfactants such as lecithin and TEPG succinate and solubilizers such as PEG 400 to provide useful oral formulations for administration to patients having a malcondition wherein inhibition of FAK is medically indicated, such as cancer or arthritis.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: June 28, 2016
    Assignee: VERASTEM, INC.
    Inventors: Andrew Xian Chen, Yali J. Tsai
  • Patent number: 9370486
    Abstract: In certain embodiments, this invention sets forth compositions, methods, and uses regarding a nanoemulsion composition that comprises a fat-soluble vitamin K and can therapeutically replace Phytonadione Injectable Emulsion, USP.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: June 21, 2016
    Assignee: LATITUDE PHARMACEUTICALS INC.
    Inventor: Andrew Xian Chen
  • Patent number: 9248098
    Abstract: The present invention relates to a pharmaceutical composition comprising spicamycin derivatives that vary in their fatty acid side chain moieties and are useful in the treatment of pain. The invention further provides a method of using the pharmaceutical composition to treat pain, including neuropathic pain.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: February 2, 2016
    Assignee: DARA BIOSCIENCES, INC.
    Inventors: John R. Didsbury, Kenneth J. Ingold, Linda Goff Jet, Andrew Xian Chen, Hailiang Chen
  • Publication number: 20150306173
    Abstract: The present invention provides a clear depot comprising at least one hydrophilic water-soluble pharmaceutically active agent selected from the group consisting of vancomycin, gentamicin, a pharmaceutically acceptable salt thereof and a mixture thereof, water, a phospholipid, an oil, optionally a pH adjusting agent, and a viscosity modifying agent selected from the group consisting of ethanol, isopropanol, and a mixture thereof, wherein the water present in the depot is no more than about 4 wt % relative to the total weight of the depot and the depot has a pH of between about 3 and about 6, method of making and administering same.
    Type: Application
    Filed: July 7, 2015
    Publication date: October 29, 2015
    Inventors: Hailiang Chen, Andrew Xian Chen, Dushyanth Surakanti, Franklin Okumu
  • Patent number: 9132144
    Abstract: The present invention provides a clear depot comprising at least one hydrophilic water-soluble pharmaceutically active agent selected from the group consisting of vancomycin, gentamicin, a pharmaceutically acceptable salt thereof and a mixture thereof, water, a phospholipid, an oil, optionally a pH adjusting agent, and a viscosity modifying agent selected from the group consisting of ethanol, isopropanol, and a mixture thereof, wherein the water present in the depot is no more than about 4 wt % relative to the total weight of the depot and the depot has a pH of between about 3 and about 6, method of making and administering same.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 15, 2015
    Assignee: Dr. Reddy's Laboratories Ltd.
    Inventors: Hailiang Chen, Andrew Xian Chen, Dushyanth Surakanti, Franklin Okumu
  • Publication number: 20150224121
    Abstract: Parenteral (injectable) celecoxib emulsions and nanoemulsions are disclosed as are their use to treat pain in patients so afflicted. The emulsions are generally oil in water emulsions often comprised of an oil phase including an oil and a lecithin wherein the mean droplet size of the discontinuous oil phase is about 200 nanometers or less.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 13, 2015
    Applicant: Dr. Reddy's Laboratories Ltd.
    Inventors: Franklin Okumu, Jan-Jon Chu, Julie Ann Webb, Rafael Anthony Sabino, Andrew Xian Chen
  • Publication number: 20140378381
    Abstract: The present invention provides an oil-in-water nanoemulsion containing glucagon, an oily phase, and an aqueous phase, wherein the glucagon is physically and chemically stable and the nanoemulsion is suitable for administration by manual injection or by a pump to treat hypoglycemia.
    Type: Application
    Filed: June 25, 2014
    Publication date: December 25, 2014
    Inventors: Andrew Xian Chen, Norman Keith Orida, Hailiang Chen, Hau Huu Dang
  • Patent number: 8877746
    Abstract: Compositions and methods of making the same for in vivo delivery of lixivaptan to a subject in need thereof are described. The composition includes a substantially water-insoluble pharmacologically active agent (e.g., lixivaptan) and a substantially water-insoluble matrix forming material (e.g., a Vitamin E semi-ester), wherein the pharmacologically active agent is dispersed in said matrix forming material, and wherein the composition delivers said substantially water-insoluble pharmacologically active agent upon exposure to physiological medium.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: November 4, 2014
    Assignee: Cardioklne, Inc
    Inventors: Hailiang Chen, Andrew Xian Chen, Patricia Frech, Khawla Abu-Izza, Christoph Schmidt
  • Publication number: 20140275261
    Abstract: The present application provides parenteral compositions of diclofenac or its pharmaceutically acceptable salt and methods for making and using such compositions. Some of the compositions of the present application has one or more following properties: (1) ready to be injectable, (2) in the form of an oil-water emulsion, (3) stable under appropriate storage conditions, (4) containing therapeutically effective amount of diclofenac or its pharmaceutically acceptable salt, (5) sterilizable by filtration (6) containing components acceptable by regulatory agencies (e.g. the FDA), (7) containing low oil content and thus not exacerbating hyperlipidemia, and (8) is neither hypoallergenic nor vein irritating.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: DR. REDDY'S LABORATORIES, INC.
    Inventors: Franklin Okumu, Andrew Xian Chen, Hailiang Chen
  • Publication number: 20140249077
    Abstract: The present invention is directed to compositions and methods of preparation of phospholipid gels.
    Type: Application
    Filed: June 8, 2012
    Publication date: September 4, 2014
    Applicants: ASTRAZENECA PHARMACEUTICALS LP, AMYLIN PHARMACEUTICALS, LLC
    Inventors: Andrew Xian Chen, Hailiang Chen
  • Publication number: 20140206692
    Abstract: The invention is directed to formulations of bioactive compounds of limited water solubility, inhibitors of focal adhesion kinase (FAK) of the 2,4-diaminopyridine class, adapted for oral administration to patients. The formulations are self-emulsifying in the gastrointestinal tract of the patients, providing enhanced absorption and bioavailability of the bioactive compounds as dispersions or emulsions in an oil base. For example, esters of PEG-ylated glycerol can be used as the oil, in conjunction with surfactants such as lecithin and TEPG succinate and solubilizers such as PEG 400 to provide useful oral formulations for administration to patients having a malcondition wherein inhibition of FAK is medically indicated, such as cancer or arthritis.
    Type: Application
    Filed: August 14, 2013
    Publication date: July 24, 2014
    Inventors: Andrew Xian Chen, Yali J. Tsai
  • Publication number: 20140155320
    Abstract: The present invention provides a method of preventing and/or treating a wound infection by introducing to a wound a clear depot comprising a hydrophilic water-soluble pharmaceutically active agent(s) selected from the group consisting of vancomycin, gentamicin, and a mixture thereof, water, a phospholipid, an oil, a pH adjusting agent, and a viscosity modifying agent, wherein the water present in the viscous depot is no more than about 4 wt %, no more than about 2 wt %, or no more than about 0.5 wt % of water relative to the total weight of the depot.
    Type: Application
    Filed: October 18, 2011
    Publication date: June 5, 2014
    Applicant: DR. REDDY'S LABORATORIES, INC.
    Inventors: Hailiang Chen, Andrew Xian Chen, Dushyanth Surakanti, Franklin Omuku
  • Patent number: 8697746
    Abstract: A solid dispersion comprising ((1S)-1-((((1S)-1-benzyl-2,3-dioxo-3-(cyclopropylamino)propyl)amino)carbonyl)-3-methylbutyl)carbamic acid 5-methoxy-3-oxapentyl ester made amorphous in the presence of a water-soluble cellulosic polymer has improved storage stability. The solid dispersion also has improved solubility for an improved bioavailability.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: April 15, 2014
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Andrew Xian Chen, John Fan, Masazumi Yamaguchi
  • Patent number: 8557861
    Abstract: The present invention provides injectable oil-in-water emulsions of taxoid drugs or other water insoluble drugs. The present invention also provides methods for preparing and using such oil-in-water emulsions.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: October 15, 2013
    Assignee: Mast Therapeutics, Inc.
    Inventor: Andrew Xian Chen
  • Patent number: 8470346
    Abstract: The present invention provides antiviral compositions that comprise one or more of an ionic multivalent metal component, a cationic polymer, and a cationic surfactant. The present invention also provides methods for making and using such antiviral compositions.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: June 25, 2013
    Assignee: Mast Therapeutics, Inc.
    Inventor: Andrew Xian Chen