Patents by Inventor Youn Woong CHOI

Youn Woong 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: 12053574
    Abstract: The present invention relates to a dry powder inhaler. The dry powder inhaler includes an inhaler housing, a drug container configured to be provided in the inhaler housing and accommodate the dry powder drug, a drug inlet configured to be disposed above the drug container and through which the dry powder drug is inhaled, and a mesh network configured to be installed on a path of the drug inlet and have a mesh part for collision with the dry powder drug formed therein.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 6, 2024
    Inventors: Won Ho Kang, Youn Woong Choi, Dae Chul Ha, Seung Jin Yang, Gweon Hee Yu, Kyu Yeol Nam, Kyu Chul Jang
  • Patent number: 11896718
    Abstract: The present invention relates to a composite preparation in a core tablet form, composed of an inner core containing rabeprazole as an effective ingredient; an outer layer portion including the bilayer structure of a sustained release layer and an immediate release layer and containing mosapride as an effective ingredient. The core tablet composite preparation according to the present invention is characterized by exerting sufficient pharmacological activity of rabeprazole and mosapride even upon administration of one tablet once a day.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: February 13, 2024
    Inventors: Byung Jin Kim, Hee Yong Song, Youn Woong Choi, Seong Yeob Kim
  • Patent number: 11707434
    Abstract: The present invention relates to a method for preparing a lyophilized cyclophosphamide composition, wherein 99% or more of the finally prepared lyophilized cyclophosphamide composition is reconstituted within 15 seconds when water for pharmaceutical use is injected thereinto at a ratio of 50 mL per 1 g of anhydrous cyclophosphamide, comprising a step of dissolving D-mannitol or lactose, as a lyoprotectant, and cyclophosphamide in a water solvent in a selected reaction vessel; and a lyophilized cyclophosphamide composition for injection prepared thereof.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: July 25, 2023
    Assignee: KOREA UNITED PHARM. INC.
    Inventors: Won Ho Kang, Won Tae Jung, Jung Hoon Kang, Youn Woong Choi
  • Publication number: 20210177765
    Abstract: The present invention relates to a composite preparation in a core tablet form, composed of an inner core containing rabeprazole as an effective ingredient; an outer layer portion including the bilayer structure of a sustained release layer and an immediate release layer and containing mosapride as an effective ingredient. The core tablet composite preparation according to the present invention is characterized by exerting sufficient pharmacological activity of rabeprazole and mosapride even upon administration of one tablet once a day.
    Type: Application
    Filed: November 26, 2018
    Publication date: June 17, 2021
    Inventors: Byung Jin KIM, Hee Yong Song, Youn Woong CHOI, Seong Yeob KIM
  • Publication number: 20210177764
    Abstract: The present invention relates to a method for preparing a lyophilized cyclophosphamide composition, wherein 99% or more of the finally prepared lyophilized cyclophosphamide composition is reconstituted within 15 seconds when water for pharmaceutical use is injected thereinto at a ratio of 50 mL per 1 g of anhydrous cyclophosphamide, comprising a step of dissolving D-mannitol or lactose, as a lyoprotectant, and cyclophosphamide in a water solvent in a selected reaction vessel; and a lyophilized cyclophosphamide composition for injection prepared thereof.
    Type: Application
    Filed: April 11, 2019
    Publication date: June 17, 2021
    Inventors: Won Ho Kang, Won Tae Jung, Jung Hoon Kang, Youn Woong Choi
  • Patent number: 11000481
    Abstract: The present invention relates to a composite preparation with various dosage forms comprising mosapride and rabeprazole. The composite preparation prepared according to the present invention allows rapid release of a drug without deteriorating its release by an interaction between mosapride and rabeprazole, thus exhibiting an improved drug release rate and bioavailability, while having excellent product stability and being capable of significantly lowering the amount of the excipient. Accordingly, the composite preparation of the present invention can improve patients' drug compliance due to the size of its dosage form.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 11, 2021
    Assignee: KOREA UNITED PHARM. INC.
    Inventors: Youn Woong Choi, Hee Yong Song, Dae-Chul Ha, Byung Jin Kim
  • Publication number: 20200139057
    Abstract: The present invention relates to a dry powder inhaler. The dry powder inhaler includes an inhaler housing, a drug container configured to be provided in the inhaler housing and accommodate the dry powder drug, a drug inlet configured to be disposed above the drug container and through which the dry powder drug is inhaled, and a mesh network configured to be installed on a path of the drug inlet and have a mesh part for collision with the dry powder drug formed therein.
    Type: Application
    Filed: June 29, 2017
    Publication date: May 7, 2020
    Applicant: KOREA UNITED PHARM. INC.
    Inventors: Won Ho KANG, Youn Woong CHOI, Dae Chul HA, Seung Jin YANG, Gweon Hee YU, Kyu Yeol NAM, Kyu Chul JANG
  • Publication number: 20180177731
    Abstract: The present invention relates to a composite preparation with various dosage forms comprising mosapride and rabeprazole. The composite preparation prepared according to the present invention allows rapid release of a drug without deteriorating its release by an interaction between mosapride and rabeprazole, thus exhibiting an improved drug release rate and bioavailability, while having excellent product stability and being capable of significantly lowering the amount of the excipient. Accordingly, the composite preparation of the present invention can improve patients' drug compliance due to the size of its dosage form.
    Type: Application
    Filed: June 27, 2016
    Publication date: June 28, 2018
    Applicant: KOREA UNITED PHARM. INC.
    Inventors: Youn Woong Choi, Hee Yong Song, Dae-Chul Ha, Byung Jin Kim, Eun Hae Yi
  • Patent number: 9962390
    Abstract: The formulation for oral administration of the present invention containing Mosapride or its salt is a double layer formulation consisting of a fast-release layer for rapid release of a drug and a sustained-release layer for slow release in order to simultaneously satisfy the rapid exhibition of pharmacological activities and sustained maintenance of pharmacological activities for 24 hours, wherein the high-viscosity hydroxypropyl methylcellulose (HPMC) and the low-viscosity HPMC are used in mixture such that the content of a high viscosity HPMC as a controlled-release matrix within the sustained-release layer has a higher content, thereby capable of controlling the dissolution rate in the regions having different pH values within the gastrointestinal tract and/or the retention time in the gastrointestinal tract.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 8, 2018
    Assignee: Korea United Pharm, Inc.
    Inventors: Byung Jin Kim, Youn Woong Choi, Hee Yong Song, Jong-Il Kim, Yong Hee Kim, Myoung-Hwa Lim, Min Soo Kim, Dae-Chul Ha
  • Publication number: 20160287651
    Abstract: The present invention relates to a solid preparation including a Pelargonium sidoides extract and a silicic acid compound, which is allowed to be formulated in a solid form by direct adsorption of the Pelargonium sidoides extract onto a silicic acid compound, and a preparation method thereof. Since the solid preparation including the Pelargonium sidoides extract and the silicic acid compound of the present invention has higher stability than a liquid preparation such as syrup, and has no additives such as sugars, there is no concern about microbial contamination or spoilage of the preparation. In addition, it is possible to pack the solid preparation individually. Since the solid preparation is smaller in volume than the liquid preparation, it is highly portable, and there is also a convenience that no additional tools are needed to take the drug. Further, the active ingredient can be taken at the equal amount every time.
    Type: Application
    Filed: December 19, 2014
    Publication date: October 6, 2016
    Applicant: Korea United Pharm. Inc.
    Inventors: Youn Woong Choi, Byung Gu Min, Sang Min Cho, Do Hyoung Ki, Ji Hyun Ahn, Byung Hoon Lee, Hyung Joon Jun, Won Tae Jung, Kyu Yeol Nam, Dong Gyu Lee, Jin Seong Chung
  • Publication number: 20160030436
    Abstract: The formulation for oral administration of the present invention containing Mosapride or its salt is a double layer formulation consisting of a fast-release layer for rapid release of a drug and a sustained-release layer for slow release in order to simultaneously satisfy the rapid exhibition of pharmacological activities and sustained maintenance of pharmacological activities for 24 hours, wherein the high-viscosity hydroxypropyl methylcellulose (HPMC) and the low-viscosity HPMC are used in mixture such that the content of a high viscosity HPMC as a controlled-release matrix within the sustained-release layer has a higher content, thereby capable of controlling the dissolution rate in the regions having different pH values within the gastrointestinal tract and/or the retention time in the gastrointestinal tract.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 4, 2016
    Applicant: Korea United Pharm. Inc.
    Inventors: Byung Jin Kim, Youn Woong Choi, Hee Yong Song, Jong-Il Kim, Yong Hee Kim, Myoung-Hwa Lim, Min Soo Kim, Dae-Chul Ha
  • Patent number: 9180198
    Abstract: Provided is a slow-release tablet including cilostazol as a pharmacologically active component, which is efficacious in suppressing aggregation of blood platelets and promoting vascular relaxation by inhibiting phosphodiesterase types. The slow-release cilostazol tablet has an extended elution time so that the slow-release cilostazol tablet can be taken once daily for convenience of drug use, and minimizes the manifestation of headache which is one side effect caused when women, the elderly and children take conventional cilostazol preparations so that the convenience of drug use can be improved. Also, the slow-release cilostazol tablet exhibits a stable elution pattern with no variation in elution rate according to changes in pH in the stomach and intestines, as well as an effect of delaying the release of a drug, using a mixture of hydroxypropyl methylcellulose and a carbomer as a release-controlling polymer.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: November 10, 2015
    Assignee: KOREA UNITED PHARM, INC.
    Inventors: Youn-Woong Choi, Byung-Gu Min, Sang-Min Cho
  • Publication number: 20120172395
    Abstract: Provided is a slow-release tablet including cilostazol as a pharmacologically active component, which is efficacious in suppressing aggregation of blood platelets and promoting vascular relaxation by inhibiting phosphodiesterase types. The slow-release cilostazol tablet has an extended elution time so that the slow-release cilostazol tablet can be taken once daily for convenience of drug use, and minimizes the manifestation of headache which is one side effect caused when women, the elderly and children take conventional cilostazol preparations so that the convenience of drug use can be improved. Also, the slow-release cilostazol tablet exhibits a stable elution pattern with no variation in elution rate according to changes in pH in the stomach and intestines, as well as an effect of delaying the release of a drug, using a mixture of hydroxypropyl methylcellulose and a carbomer as a release-controlling polymer.
    Type: Application
    Filed: September 23, 2009
    Publication date: July 5, 2012
    Applicant: KOREA UNITED PHARM, INC
    Inventors: Youn-Woong Choi, Byung-Gu Min, Sang-Min Cho
  • Publication number: 20110318275
    Abstract: The present invention relates to a biocompatible contrast agent and a method of its preparation. More particularly, the present invention relates to a multifunctional contrast agent manufactured by prepairing a novel polysuccinimide-based polymer by introducing an alkanolamine group to the main group of the polysuccinimide in addition to a biocompatible hydrophilic group, which improves bioavailability, and a hydrophobic group, which enables to maintain the form of stable nanoparticles during the formation of nano particles for a long period of time and to encapsulate a hydrophobic anticancer agent.
    Type: Application
    Filed: September 28, 2009
    Publication date: December 29, 2011
    Applicants: KOREA UNITED PHARM. INC., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Sun Hang Cho, Byung Cheol Shin, Soon Hong Yuk, Ha Soo Seong, Byung Jin Kim, Hyo Jeong Kim, Youn Woong Choi, Byung Gu Min, Dae Chul Ha
  • Publication number: 20100303922
    Abstract: Disclosed are biocompatible polymeric nanoparticles for drug delivery and a method for preparing the same. They can be prepared by mixing a tri-block copolymer, PEG, and a drug at a predetermined temperature to give a homogeneous polymeric mixture; solidifying the homogeneous polymeric mixture at room temperature; and dissolving the solidified polymeric mixture in an aqueous solution. Based on a polymer melting process, the method makes it easy to produce poloxamer nanoparticles at low cost. The nanoparticles show desired particle sizes suitable for use in drug delivery and a uniform particle size distribution. Consisting of a bilayer structure, the nanoparticles can contain sparingly soluble drugs. Also, the nanoparticles contain no organic solvents and are thus safe to the body because they are free of organic solvent residuals.
    Type: Application
    Filed: April 22, 2008
    Publication date: December 2, 2010
    Inventors: Soon Hong Yuk, Keun Sang Oh, Won Tae Jung, Youn Woong Choi, Sang Min Cho, Dae Chul Ha, Do Hyung Kim, Seong Woo Ahn, Jeong Hyun Choi
  • Publication number: 20100144708
    Abstract: The present invention relates to new heterocyclic compounds containing nitrogen atoms or pharmaceutically acceptable salts thereof, a process for the preparation thereof, and a pharmaceutical composition comprising the same for treatment of cancer. The compounds according to the present invention induce DNA damage due to reactive oxygen species to activate c-abl and p53, induce RhoB to generate apoptosis, and induce cell death by down-regulating Bcl2 involved in cell survival, which is generated by dysregulated signals via the mitochondria pathway, thereby inhibiting tumor cell growth and inducing apoptosis. Accordingly, the composition according to the present invention can be used to treat cancer.
    Type: Application
    Filed: August 10, 2007
    Publication date: June 10, 2010
    Applicants: Korea Research Instititute of Bioscience and Biotechnology, Seoul Pharma, Co., Ltd.
    Inventors: Gyoon Hee Han, Eun Hyun Choi, Jee Sun Yang, Sung Hee Hong, Myung Sook Kim, Mi Sun Won, Kyung Sook Chung, Dong Myung Kim, Hyang Sook Yoo, Hwan Mook Kim, Song Kyu Park, Ki Ho Lee, Chang Woo Lee, Youn Woong Choi, Yong Mi Jeong, Byung Gu Min
  • Publication number: 20090069389
    Abstract: The present invention relates to a controlled-release niacin formulation. In particular, the present invention relates to a controlled-release niacin formulation, comprising niacin; hydroxypropyl methylcellulose; and a carboxyvinyl polymer, in which the carboxyvinyl polymer and hydroxypropyl methylcellulose are contained in a predetermined weight ratio, and to a preparation method thereof. The controlled-release niacin formulation according to the present invention maintains its matrix shape until completion of release, and maintains its release pattern without fluctuation for a desired time period, unlike a commercial formulation. In particular, since niacin formulations are used for long-term treatment of hyperlipidemia, the controlled-release niacin formulation of the present invention, capable of maintaining effective blood concentration and high stability for a long period of time, is very useful.
    Type: Application
    Filed: July 28, 2008
    Publication date: March 12, 2009
    Applicant: SEOUL PHARMA. CO., LTD.
    Inventors: Youn Woong CHOI, Byung Hwan RYOO, Yong Mi JEONG, Jae Sang JANG