Patents by Inventor Hsien-Hsin Tung

Hsien-Hsin Tung 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: 10792249
    Abstract: A pharmaceutical composition of high drug loading comprising an active pharmaceutical ingredient (API) and pharmaceutical acceptable additives, which include glass-solution forming additive and/or eutectic-mixture forming additive, is provided. The composition is dispersed uniformly to form a hybrid solid dispersion consisting of crystalline-suspension, glass-solution and/or eutectic-mixture, where the crystalline API is uniformly distributed in the hybrid solid dispersion and exists in nano/micro particle size range. The amorphous API, when present, is uniformly distributed in the hybrid solid dispersion. The API may exist in different chemical and/or physical forms. The API is present in an amount of from more than about 50% wt/wt to about 90% wt/wt with respect to the total amount of the active pharmaceutical ingredient and the pharmaceutically acceptable glass-solution forming and/or eutectic-mixture forming additives.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: October 6, 2020
    Assignee: AcrysPharm LLC
    Inventor: Hsien-Hsin Tung
  • Publication number: 20190021997
    Abstract: A pharmaceutical composition of high drug loading comprising an active pharmaceutical ingredient (API) and pharmaceutical acceptable additives, which include glass-solution forming additive and/or eutectic-mixture forming additive, is provided. The composition is dispersed uniformly to form a hybrid solid dispersion consisting of crystalline-suspension, glass-solution and/or eutectic-mixture, where the crystalline API is uniformly distributed in the hybrid solid dispersion and exists in nano/micro particle size range. The amorphous API, when present, is uniformly distributed in the hybrid solid dispersion. The API may exist in different chemical and/or physical forms. The API is present in an amount of from more than about 50% wt/wt to about 90% wt/wt with respect to the total amount of the active pharmaceutical ingredient and the pharmaceutically acceptable glass-solution forming and/or eutectic-mixture forming additives.
    Type: Application
    Filed: November 3, 2017
    Publication date: January 24, 2019
    Applicant: AcryPharm LLC
    Inventor: Hsien-Hsin TUNG
  • Patent number: 8450372
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: May 28, 2013
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Jeannie Chow Wong, Aaron S. Cote, Erik A. Dienemann, Kimberly Gallagher, Craig Ikeda, Justin Moser, Pavol Rajniak, Robert A. Reed, Cindy Starbuck, Hsien-Hsin Tung, Qingxi Wang, Benjamin Max Cohen, Vincent R. Capodanno, Brian Sell, Thomas A. Miller
  • Patent number: 8357798
    Abstract: Potassium salts of Compound A and methods for their preparation are disclosed, wherein Compound A is of formula: Compound A is an HIV integrase inhibitor useful for treating or prophylaxis of HIV infection, for delaying the onset of AIDS, and for treating or prophylaxis of AIDS.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: January 22, 2013
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Kevin M. Belyk, Henry G. Morrison, Philip Jones, Vincenzo Summa, V. Brett Cooper, Amar J. Mahajan, Daniel J. Kumke, Hsien-Hsin Tung, Lawrence Wai, Vanessa Pruzinsky, Philip Pye, Remy Angelaud, Danny Mancheno
  • Patent number: 8288440
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: October 16, 2012
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Jeannie Chow Wong, Aaron S. Cote, Erik A. Dienemann, Kimberly Gallagher, Craig Ikeda, Justin Moser, Pavol Rajniak, Robert A. Reed, Cindy Starbuck, Hsien-Hsin Tung, Qingxi Wang, Benjamin Max Cohen, Vincent R. Capodanno, Brian Sell
  • Patent number: 8093295
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: January 10, 2012
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Jeannie Chow Wong, Benjamin Max Cohen, Aaron S. Cote, Erik A. Dienemann, Kimberly Gallagher, Craig Ikeda, Justin Moser, Pavol Rajniak, Robert A. Reed, Brian Sell, Cindy Starbuck, Hsien-Hsin Tung, Qingxi Wang, Vincent R. Capodanno
  • Publication number: 20110053927
    Abstract: The invention encompasses a method for making nano-sized particles of water-insoluble pharmaceuticals comprising: (1) dissolving the water-insoluble pharmaceutical in a water-miscible solvent, optionally with water and inactive pharmaceutical ingredients, to make a solution; (2) rapidly mixing the solution with an anti-solvent which creates a high level of supersaturation, wherein the anti-solvent is water with optional inactive pharmaceutical ingredients; (3) simultaneously applying energy to the resulting mixture during the mixing of solution and anti-solvent as nano-sized drug particles precipitate out and form a slurry mixture under supersaturation; and (4) optionally isolating the nano-sized particles of water-insoluble pharmaceuticals from the slurry mixture.
    Type: Application
    Filed: April 20, 2009
    Publication date: March 3, 2011
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Hsien-Hsin Tung, Lei Wang, Santipharp Panmai, Michael Riebe
  • Patent number: 7754731
    Abstract: Potassium salts of Compound A and methods for their preparation are disclosed, wherein Compound A is of formula: Compound A is an HIV integrase inhibitor useful for treating or prophylaxis of HIV infection, for delaying the onset of AIDS, and for treating or prophylaxis of AIDS.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: July 13, 2010
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Kevin M. Belyk, Henry G. Morrison, Amar J. Mahajan, Daniel J. Kumke, Hsien-Hsin Tung, Lawrence Wai, Vanessa Pruzinsky
  • Publication number: 20100119596
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 13, 2010
    Inventors: Jeannie Chow Wong, Aaron S. Cote, Erik A. Dienemann, Kimberly Gallagher, Craig Ikeda, Justin Moser, Pavol Rajniak, Robert A. Reed, Cindy Starbuck, Hsien-Hsin Tung, Qingxi Wang, Benjamin Max Cohen, Vincent R. Capodanno, Brian Sell
  • Publication number: 20100113829
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 6, 2010
    Inventors: Aaron S. Cote, Erik A. Dienemann, Hsien-Hsin Tung, Benjamin Max Cohen, Vincent R. Capodanno, Thomas A. Miller
  • Publication number: 20100112046
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 6, 2010
    Inventors: Jeannie Chow Wong, Aaron S. Cote, Erik A. Dienemann, Kimberly Gallagher, Craig Ikeda, Justin Moser, Pavol Rajniak, Robert A. Reed, Cindy Starbuck, Hsien-Hsin Tung, Qingxi Wang, Benjamin Max Cohen, Vincent R. Capodanno, Brian Sell
  • Publication number: 20090111997
    Abstract: The invention encompasses a method for making an amorphous solid of a water-insoluble pharmaceutical comprising: (1) dissolving the water-insoluble pharmaceutical in a water-miscible solvent, optionally with water, to make a solution; (2)(i) rapidly mixing the solution with an antisolvent, wherein the antisolvent is water, at low temperature to precipitate an amorphous solid of the water-insoluble pharmaceutical, or (ii) rapidly mixing the solution with an antisolvent, wherein the antisolvent is water, to precipitate an amorphous solid of the water-insoluble pharmaceutical and subsequently cooling to low temperature; and (3) isolating the amorphous solid of the water-insoluble pharmaceutical. In an embodiment of the invention, the rapid mixing is conducted using an impinging jet device.
    Type: Application
    Filed: November 17, 2006
    Publication date: April 30, 2009
    Inventors: Aaron Cote, Hsien-Hsin Tung
  • Publication number: 20090087492
    Abstract: The present invention relates to a process, for the production of crystalline particles of an active organic compound The process includes the steps of generating a micro-seed by a wet-milling process and subjecting the micro-seed to a crystallization process. The resulting crystalline particles have a mean particle size of less than about 100 ?m. The present invention also provides for a pharmaceutical composition which includes the crystalline particles produced by the method described herein and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: March 12, 2007
    Publication date: April 2, 2009
    Applicant: MERCK & CO., INC.
    Inventors: Brian K. Johnson, Hsien Hsin Tung, Ivan Lee, Aaron S. Cote, Cindy Starbuck, Michael Midler
  • Publication number: 20080132575
    Abstract: The present invention provides a pharmaceutical composition or crystalline composition with a specific dissolution profile, which comprises suberoylanilide hydroxamic acid or a pharmaceutically acceptable salt or hydrate thereof as an active ingredient. The present invention provides a process of producing said crystalline composition or pharmaceutical composition. The present invention also provides compositions with a specific particle size distribution.
    Type: Application
    Filed: May 16, 2006
    Publication date: June 5, 2008
    Inventors: Jeannie Chow Wong, Aaron S. Cote, Erik A. Dienemann, Kimberly Gallagher, Craig Ikeda, Justin Moser, Pavol Rajniak, Robert A. Reed, Cindy Starbuck, Hsien-Hsin Tung, Qingxi Wang, Benjamin Max Cohen, Vincent R. Capodanno, Brian Sell, Thomas A. Miller
  • Publication number: 20060122205
    Abstract: Potassium salts of Compound A and methods for their preparation are disclosed, wherein Compound A is of formula: Compound A is an HIV integrase inhibitor useful for treating or prophylaxis of HIV infection, for delaying the onset of AIDS, and for treating or prophylaxis of AIDS.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 8, 2006
    Inventors: Kevin Belyk, Henry Morrison, Philip Jones, Vincenzo Summa, V. Cooper, Amar Mahajan, Daniel Kumke, Hsien-Hsin Tung, Lawrence Wai, Vanessa Pruzinsky, Philip Pye, Remy Angelaud, Danny Mancheno
  • Patent number: 7022841
    Abstract: The present invention relates to a process for reducing the levels of organic solvents to pharmaceutically acceptable levels in thermally unstable crystalline carbapenem solids represented by formula I: or a salt thereof, wherein R1 and R2, are the same or different, and are selected from H, alkyl, aryl, and heteroaryl, comprising washing a carbapenem solid containing organic solvent with an organic solvent containing water; and using vacuum and/or inert gas (hydrated or dry) at low temperature to produce a compound of formula I containing pharmaceutically acceptable levels of organic solvents, wherein the water content of the crystalline carbapenem solid, correcting for organic solvents, is maintained at about 13% to about 25% during the process.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: April 4, 2006
    Assignee: Merck & Co. Inc.
    Inventors: Raymond Cvetovich, Robert Wenslow, John M. Williams, Daniel Sidler, Louis Crocker, Hsien-Hsin Tung, Brian K. Johnson, Joseph Kukura, II, Ulf Dolling
  • Publication number: 20040248770
    Abstract: A method for the ultrafiltration of an antifungal agent using a zirconium-layered ceramic ultrafilter to reduce pyrogens is disclosed.
    Type: Application
    Filed: March 29, 2004
    Publication date: December 9, 2004
    Inventors: Joseph P Grau, Hsien-Hsin Tung
  • Publication number: 20040176351
    Abstract: The present invention relates to a process for reducing the levels of organic solvents to pharmaceutically acceptable levels in thermally unstable crystalline carbapenem solids represented by formula I: 1
    Type: Application
    Filed: January 27, 2004
    Publication date: September 9, 2004
    Inventors: Raymond Cvetovich, Robert Wenslow, John Williams, Daniel Sidler, Louis Crocker, Hsien-Hsin Tung, Brian K Johnson, Joseph Kukura, Ulf Dolling
  • Patent number: 5869673
    Abstract: The yield of monoaldehyde ##STR1## from 7-chloroquinaldine and isophthalaldehyde is increased to about 82% by using a 2 molar excess of isophthalaldehyde, conditions favoring precipitation of product during the reaction and recycling unreacted isophthalaldehyde. The recycling leads to a reduced net consumption of about 1.2 molar equivalents of isophthalaldehyde.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: February 9, 1999
    Assignee: Merck & Co., Inc.
    Inventors: Hsien Hsin Tung, David Michael Hobbs
  • Patent number: 4994604
    Abstract: A process is disclosed for the formation and resolution of (S)-ibuprofen-(S)-lysine. The process employs preferential crystallization to separate a pair of diasteromeric salts, (S)-ibuprofen-(S)-lysine and (R)-ibuprofen-(S)-lysine.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: February 19, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Hsien-Hsin Tung, Stanley Waterson, Scott D. Reynolds