Patents by Inventor Hoo-Kyun Choi

Hoo-Kyun Choi 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: 10758546
    Abstract: The present invention provides a transdermal delivery system, which comprises a drug-containing matrix layer comprising: galantamine or its pharmaceutically acceptable salt as an active ingredient; and a styrene-butadiene-styrene copolymer or a styrene-isoprene-styrene copolymer as an adhesive.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: September 1, 2020
    Assignees: Industry-Academic Cooperation Foundation, TAHO Pharmaceuticals Ltd.
    Inventors: Hoo-kyun Choi, Myung-kwan Chun
  • Publication number: 20160339038
    Abstract: The present invention provides a transdermal delivery system, which comprises a drug-containing matrix layer comprising: galantamine or its pharmaceutically acceptable salt as an active ingredient; and a styrene-butadiene-styrene copolymer or a styrene-isoprene-styrene copolymer as an adhesive.
    Type: Application
    Filed: July 20, 2016
    Publication date: November 24, 2016
    Inventors: Hoo-kyun Choi, Myung-kwan Chun
  • Patent number: 9155711
    Abstract: The present invention provides a transdermal drug delivery system comprising a drug-containing matrix layer comprising: (a) donepezil or a pharmaceutically acceptable salt thereof as an active ingredient; and (b) an acrylate-rubber hybrid as an adhesive.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 13, 2015
    Assignee: NAL PHARMACEUTICALS, LTD.
    Inventors: Hoo-Kyun Choi, Myung-Kwan Chun, Y. Joseph Mo
  • Publication number: 20150258036
    Abstract: Certain embodiments of the invention relates to a transdermal drug delivery system containing donepezil or a pharmaceutically acceptable salt thereof as an active ingredient, more specifically to a transdermal drug delivery system containing a drug-containing matrix layer comprising donepezil or its pharmaceutically acceptable salt, a styrene copolymer, a hydrogenated rosin glycerol ester, and optionally a hydrocarbon resin.
    Type: Application
    Filed: February 20, 2015
    Publication date: September 17, 2015
    Applicant: NAL PHARMACEUTICALS, LTD.
    Inventor: Hoo-Kyun CHOI
  • Patent number: 9066886
    Abstract: Disclosed herein is a transdermal system in a matrix form capable of enhancing granisetron carrying efficiency and improving transdermal absorption while inhibiting recrystallization, which comprises: at least one transdermal enhancer selected from a group consisting of polyglyceryl-3 oleate, polyethyleneglycol-20 almond glyceride, polyethyleneglycol-12 palm kernel glyceride, isopropyl myristate and oleyl alcohol; and an acrylate polymer.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: June 30, 2015
    Assignee: TAHO PHARMACEUTICALS, LTD.
    Inventor: Hoo-Kyun Choi
  • Patent number: 8968774
    Abstract: A composition for transdermal permeation and a preparation method are disclosed. The composition including meloxicam as an active ingredient and further including at least one permeation enhancing agent selected from the group consisting of a sorbitan fatty acid derivative, a polyglyceryl fatty acid derivative, a polyethylene glycol vegetable oil ester, a polyethylene glycol corn oil glyceride, and a polyethylene glycol almond oil glyceride and at least one acrylic polymer adhesive having a hydroxyl group or no functional group.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: March 3, 2015
    Assignees: Industry-Academic Cooperation Foundation, Chosun University, Golden Pacific Bio Limited
    Inventor: Hoo-Kyun Choi
  • Publication number: 20140370076
    Abstract: The present invention provides a transdermal drug delivery system comprising donepezil or its pharmaceutically acceptable salt and method of making the same.
    Type: Application
    Filed: March 12, 2014
    Publication date: December 18, 2014
    Inventors: Hoo-Kyun Choi, Myung-Kwan Chun
  • Publication number: 20140370077
    Abstract: The present invention provides a transdermal drug delivery system comprising fentanyl or its pharmaceutically acceptable salt and method of making the same.
    Type: Application
    Filed: March 12, 2014
    Publication date: December 18, 2014
    Inventors: Hoo-Kyun Choi, Je Phil Ryoo
  • Publication number: 20130324950
    Abstract: The present invention provides a transdermal delivery system, which comprises a drug-containing matrix layer comprising: galantamine or its pharmaceutically acceptable salt as an active ingredient; and a styrene-butadiene-styrene copolymer or a styrene-isoprene-styrene copolymer as an adhesive.
    Type: Application
    Filed: February 17, 2012
    Publication date: December 5, 2013
    Applicant: Industry-Academic Cooperation Foundation, Chosun University
    Inventors: Hoo-kyun Choi, Myung-kwan Chun
  • Publication number: 20130095168
    Abstract: The present invention provides a transdermal drug delivery system comprising a drug-containing matrix layer comprising: (a) donepezil or a pharmaceutically acceptable salt thereof as an active ingredient; and (b) an acrylate-rubber hybrid as an adhesive.
    Type: Application
    Filed: April 27, 2011
    Publication date: April 18, 2013
    Inventors: Hoo-Kyun Choi, Myung-Kwan Chun
  • Publication number: 20100285133
    Abstract: Disclosed herein is a transdermal system in a matrix form capable of enhancing granisetron carrying efficiency and improving transdermal absorption while inhibiting recrystallization, which comprises: at least one transdermal enhancer selected from a group consisting of polyglyceryl-3 oleate, polyethyleneglycol-20 almond glyceride, polyethyleneglycol-12 palm kernel glyceride, isopropyl myristate and oleyl alcohol; and an acrylate polymer.
    Type: Application
    Filed: August 22, 2008
    Publication date: November 11, 2010
    Applicant: ECHO PACIFIC LTD.
    Inventor: Hoo-Kyun Choi
  • Publication number: 20100209484
    Abstract: This invention relates to transdermal system for the systemic administration of an active ingredient such as a triptan selected from the group comprising eletriptan, frovatriptan, sumatriptan, zolmitriptan, naratriptan, rizatriptan and almotriptan uniformly over periods of 12 to 24 hours or more thereby reducing the probability of recurring migraine. The formulation includes active ingredient, adhesive matrix and permeation enhancer. The invention also relates to storage stable formulations and methods for preventing migraine and cessation of an ongoing migraine event.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Inventors: Hoo-Kyun Choi, Je Phil Ryoo
  • Publication number: 20090246266
    Abstract: A composition for transdermal permeation and a preparation method are disclosed. The composition including meloxicam as an active ingredient and further including at least one permeation enhancing agent selected from the group consisting of a sorbitan fatty acid derivative, a polyglyceryl fatty acid derivative, a polyethylene glycol vegetable oil ester, a polyethylene glycol corn oil glyceride, and a polyethylene glycol almond oil glyceride and at least one acrylic polymer adhesive having a hydroxyl group or no functional group.
    Type: Application
    Filed: September 20, 2007
    Publication date: October 1, 2009
    Applicant: GOLDEN PACIFIC BIO LIMITED
    Inventor: Hoo-Kyun Choi
  • Patent number: 5602107
    Abstract: There is disclosed a topical pour-on formulation containing glycols, glycerides, or their derivatives and an avermectin compound (active ingredient) which has been discovered to provide superior efficacy against endoparasites and ectoparasites when compared to conventional formulations and to maintain the concentration of the active compound in the milk of dairy animals below a safe concentration for human consumption. The formulation contains the avermectin active ingredient and at least 50% of the glycol or glyceride.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: February 11, 1997
    Assignee: Merck & Co., Inc.
    Inventor: Hoo-Kyun Choi
  • Patent number: 5516761
    Abstract: There is disclosed a topical multiple-point-application formulation containing a solution of a polymeric material and an avermectin compound (active ingredient) which has been discovered to provide superior efficacy against ectoparasites, such as fleas and ticks and endoparasites such as nematodes and heartworms, when compared to conventional formulations. The formulation contains the avermectin active ingredient and up to 50% of the polymeric material.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: May 14, 1996
    Assignee: Merck & Co., Inc.
    Inventors: Hoo-Kyun Choi, James B. Williams