Patents by Inventor San Kiang

San Kiang 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).

  • Patent number: 10973768
    Abstract: The present disclosure relates to methods for making extended-release formulations of water-soluble active pharmaceutical ingredients such as metformin HCl. In one aspect, the disclosure provides a method that includes adding an aqueous solution of an active pharmaceutical ingredient to an agitated mixture of one or more release-modifying polymers and optionally one or more binders in one or more organic solvents, the one or more organic solvents together being an antisolvent for the active pharmaceutical ingredient, water being sufficiently soluble in the one or more organic solvents such that the water added as part of the aqueous solution dissolves in the mixture, the addition thereby precipitating the active pharmaceutical ingredient; separating the active pharmaceutical ingredient and the one or more release-modifying polymers and, if present, the one or more binders from the one or more organic solvents to yield co-processed particles; and drying the co-processed particles.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: April 13, 2021
    Assignee: Bristol-Myers Squibb Company
    Inventors: Deniz Erdemir, Shih-Ying Chang, Divyakant Desai, San Kiang
  • Publication number: 20160102093
    Abstract: A process for the production of a formulation of HIV attachment inhibitor piperazine tris salt prodrug compound involves dissolving the prodrug compound in a solvent to form a solution; adding a first quantity of a first anti-solvent to the solution; then dispersing a first quantity of HPMC in the solution; adding a second quantity of the first anti-solvent to the solution; dispersing a second quantity of HPMC in the solution; then adding a second anti-solvent to the solution so as to crystallize the compound with the HPMC and thereby form the formulation, wherein the second anti-solvent is a combination of acetone and isopropyl acetate (IPAC). The formulation is then washed, and dried.
    Type: Application
    Filed: December 18, 2015
    Publication date: April 14, 2016
    Inventors: Shih-Ying Chang, Donald Kientzler, Deniz Erdemir, San Kiang, Tamar Rosenbaum
  • Patent number: 9248139
    Abstract: A process for the production of a formulation of HIV attachment inhibitor piperazine tris salt prodrug compound involves dissolving the prodrug compound in a solvent to form a solution; adding a first quantity of a first anti-solvent to the solution; then dispersing a first quantity of HPMC in the solution; adding a second quantity of the first anti-solvent to the solution; dispersing a second quantity of HPMC in the solution; then adding a second anti-solvent to the solution so as to crystallize the compound with the HPMC and thereby form the formulation, wherein the second anti-solvent is a combination of acetone and isopropyl acetate (IPAC). The formulation is then washed, and dried.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 2, 2016
    Assignee: Bristol-Myers Squibb Company
    Inventors: Shih-Ying Chang, Donald Kientzler, Deniz Erdemir, San Kiang, Tamar Rosenbaum
  • Patent number: 9066848
    Abstract: A process is provided for making sterile aripiprazole having an average particle size less than 100 microns but preferably greater than 25 microns employing an impinging jet crystallization procedure. The resulting bulk aripiprazole of desired particle size may be used to form a sterile freeze-dried aripiprazole formulation, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: June 30, 2015
    Assignee: Otsuka Pharmaceuticals Co., Ltd.
    Inventors: Margaret M. Gleeson, Soojin Kim, Donald C. Kientzler, San Kiang
  • Publication number: 20150050335
    Abstract: The present disclosure relates to methods for making extended-release formulations of water-soluble active pharmaceutical ingredients such as metformin HCl. In one aspect, the disclosure provides a method that includes adding an aqueous solution of an active pharmaceutical ingredient to an agitated mixture of one or more release-modifying polymers and optionally one or more binders in one or more organic solvents, the one or more organic solvents together being an antisolvent for the active pharmaceutical ingredient, water being sufficiently soluble in the one or more organic solvents such that the water added as part of the aqueous solution dissolves in the mixture, the addition thereby precipitating the active pharmaceutical ingredient; separating the active pharmaceutical ingredient and the one or more release-modifying polymers and, if present, the one or more binders from the one or more organic solvents to yield co-processed particles; and drying the co-processed particles.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 19, 2015
    Inventors: Deniz Erdemir, Shih-Ying Chang, Divyakant Desai, San Kiang
  • Publication number: 20110166352
    Abstract: A process is provided for making sterile aripiprazole having an average particle size less than 100 microns but preferably greater than 25 microns employing an impinging jet crystallization procedure. The resulting bulk aripiprazole of desired particle size may be used to form a sterile freeze-dried aripiprazole formulation, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks.
    Type: Application
    Filed: March 11, 2011
    Publication date: July 7, 2011
    Inventors: Margaret M. Gleeson, Soojin Kim, Donald C. Kientzler, San Kiang
  • Patent number: 7164015
    Abstract: The present invention provides a method for making glycoside compounds including the steps of: (a) lithiating an aromatic reactant having a leaving group using a lithium reagent in a first microreactor under non-cryogenic conditions to form a lithiated anion species, and (b) coupling the lithiated anion species with a carbonyl substituted reactant to form a glycoside.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 16, 2007
    Assignee: Bristol-Myers Squibb Company
    Inventors: Lifen Shen, San Kiang, Zhenrong Guo
  • Patent number: 7008959
    Abstract: The invention relates to a novel crystalline form of irbesartan to pharmaceutical compositions containing it, to processes for preparing it, and to a method for treating cardiovascular diseases utilizing it.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: March 7, 2006
    Assignee: Sanofi-Aventis
    Inventors: Bruno Franc, Christian Hoff, San Kiang, Mark D. Lindrud, Olivier Monnier, Chenkou Wei
  • Publication number: 20050152981
    Abstract: A process is provided for making sterile aripiprazole having an average particle size less than 100 microns but preferably greater than 25 microns employing an impinging jet crystallization procedure. The resulting bulk aripiprazole of desired particle size may be used to form a sterile freeze-dried aripiprazole formulation, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks.
    Type: Application
    Filed: October 19, 2004
    Publication date: July 14, 2005
    Inventors: Margaret Gleeson, Soojin Kim, Donald Kientzler, San Kiang
  • Publication number: 20050032862
    Abstract: The invention relates to a novel crystalline form of irbesartan, to pharmaceutical compositions containing it, to processes for preparing it, and to a method for treating cardiovascular diseases utilizing it.
    Type: Application
    Filed: September 9, 2004
    Publication date: February 10, 2005
    Inventors: Bruno Franc, Christian Hoff, San Kiang, Mark Lindrud, Olivier Monnier, Chenkou Wei
  • Publication number: 20050032235
    Abstract: The present invention relates to a method of monitoring the blending of at least two blendable components to yield a mixture.
    Type: Application
    Filed: June 17, 2004
    Publication date: February 10, 2005
    Inventors: Srinivas Tummala, Ehrlic Lo, Simon Leung, San Kiang
  • Publication number: 20040230045
    Abstract: The present invention provides a method for making glycoside compounds including the steps of: (a) lithiating an aromatic reactant having a leaving group using a lithium reagent in a first microreactor under non-cryogenic conditions to form a lithiated anion species, and (b) coupling the lithiated anion species with a carbonyl substituted reactant to form a glycoside.
    Type: Application
    Filed: February 27, 2004
    Publication date: November 18, 2004
    Inventors: Lifen Shen, San Kiang, Zhenrong Guo
  • Patent number: 6800761
    Abstract: The invention relates to a novel crystalline form of irbesartan, to pharmaceutical compositions containing it, to processes for preparing it, and to a method for treating cardiovascular diseases utilizing it.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: October 5, 2004
    Assignee: Sanofi-Synthelabo
    Inventors: Bruno Franc, Christian Hoff, San Kiang, Mark D. Lindrud, Olivier Monnier, Chenkou Wei