Patents by Inventor Choun-Ki Joo

Choun-Ki Joo 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: 9364552
    Abstract: The present invention relates to a composition for inhibiting after-cataract including a hydrophilic sulfasalazine; a high content of hyaluronic acid; and a carrier containing an aqueous solution, and a method of preparing a composition for inhibiting after-cataract including the steps of adding hyaluronic acid powder to a hydrophilized sulfasalazine; and mixing the same with a specific condition.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: June 14, 2016
    Assignees: BMI KOREA CO., LTD, CATHOLIC UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Yeong-Jun Baik, Choun-Ki Joo, Sung-Hee Lee, Jun-Sub Choi, Koo Woo
  • Publication number: 20160157952
    Abstract: The present invention relates to a surgical instrument for cataract surgery, and provides the surgical instrument for assisting in distinguishing the anterior capsule during cataract surgery, including a ring-shaped body; and a light source provided on a bottom surface portion of the body.
    Type: Application
    Filed: July 25, 2014
    Publication date: June 9, 2016
    Inventors: Choun-Ki JOO, Dong Jin CHANG
  • Publication number: 20160095698
    Abstract: Disclosed is an intraocular lens with a fine pattern including an optic having a circular shape, and a plurality of haptics connected to a periphery of the optic, and a pattern is formed on a surface of a partial area of at least one of the optic and the haptics.
    Type: Application
    Filed: June 19, 2015
    Publication date: April 7, 2016
    Inventors: Hojeong JEON, Chunga KWON, Yu Chan KIM, Hyun Kwang SEOK, Jee-Wook LEE, Hyun Soo LEE, Choun Ki JOO
  • Publication number: 20160058283
    Abstract: A method for calculating the center of the anterior capsule includes the steps of: photographing the eyeball of a patient with an optical coherence tomography; generating a 3-dimensional image and coordinates based on the data obtained by the optical coherence tomography; photographing the eyeball of the patient to produce an eyeball image; and matching the 3-dimensional image and coordinates to the eyeball image so as to calculate the center of the anterior capsule of the patient.
    Type: Application
    Filed: December 10, 2013
    Publication date: March 3, 2016
    Applicant: Catholic University Industry Academic Cooperation Foundation
    Inventor: Choun-ki Joo
  • Publication number: 20150305934
    Abstract: The present invention relates to an anterior capsulotomy guide device for cataract surgery. The present invention relates to an anterior capsulotomy guide device for cataract surgery which is temporarily inserted for anterior capsulotomy during cataract surgery, wherein the anterior capsulotomy guide device comprises a ring-shaped body, and a cut portion is formed by cutting a part of the body. According to the present invention, it is possible to carry out anterior capsulotomy with precise size and shape during cataract surgery, thereby maximizing the effect of cataract surgery.
    Type: Application
    Filed: October 18, 2013
    Publication date: October 29, 2015
    Inventors: Choun-Ki Joo, Dong Jin Chang, Chong Houn Lee, Dong Kun Lee
  • Publication number: 20150279239
    Abstract: The present invention relates to an ocular surgery training device, which includes an eye model having a hole at one side, and a catheter inserted into the hole, wherein a pressure sensor for measuring a pressure applied to the hole by the catheter is provided at one end of the catheter. The present invention may provide the ocular surgery training device which may enhance the skill of users in performing ocular surgery, thereby preventing complications.
    Type: Application
    Filed: March 25, 2015
    Publication date: October 1, 2015
    Inventors: Dong Jin Chang, Choun-Ki Joo
  • Publication number: 20140378410
    Abstract: The present invention relates to a composition for inhibiting after-cataract including a hydrophilic sulfasalazine; a high content of hyaluronic acid; and a carrier containing an aqueous solution, and a method of preparing a composition for inhibiting after-cataract including the steps of adding hyaluronic acid powder to a hydrophilized sulfasalazine; and mixing the same with a specific condition.
    Type: Application
    Filed: January 9, 2012
    Publication date: December 25, 2014
    Applicants: BMI Korea co., Ltd., CATHOLIC UNIVERSITY INDUSTRY-ACADEMIC COOPERATION
    Inventors: Yeong-Jun Baik, Choun-Ki Joo, Sung-Hee Lee, Jun-Sub Choi, Koo Woo
  • Patent number: 8895069
    Abstract: The present invention relates to a drug delivery composition comprising a hyaluronic acid-peptide conjugate micelle and a production method thereof. According to the drug delivery composition and the production method of the drug-loaded, hyaluronic acid-peptide conjugate micelle of the present invention, the reaction for encapsulating can proceed in a mixed solvent of an aqueous solvent and an organic solvent. Therefore, the present invention can be applied to various types of water-insoluble active components and the biocompatible and biodegradable derivative can encapsulate a drug to provide a drug-loaded micelle, which is safe to be applied for human bodies. Moreover, the micelle has a therapeutic effect from the peptide contained therein, which can act in combination with the drug as packing therein. Therefore, the drug delivery composition and its production method can be utilized in the field of producing a sustained release formulation with an extended duration of the medicinal effect.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 25, 2014
    Assignee: Postech Academy-Industry Foundation
    Inventors: Sei Kwang Hahn, Choun-Ki Joo, Yoon Keun Kim, Seung Kew Yoon, Eun Ju Oh, Ki Su Kim, Hyemin Kim, Kitae Park, Jeong-A Yang, Jun-Sub Choi, You Me Tae, Wonhee Hur
  • Publication number: 20140018402
    Abstract: The present invention provides a pharmaceutical composition for preventing or treating macular degeneration, which comprises benzopyran derivatives substituted with secondary amines including imidazole or pharmaceutically acceptable salts thereof as an active ingredient. The pharmaceutical composition of the present invention may be used in the form of eye drops.
    Type: Application
    Filed: March 29, 2011
    Publication date: January 16, 2014
    Applicants: CATHOLIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Kyu-Yang Yi, Sung-Eun Yoo, Nack-Jeong Kim, Jee-Hee Suh, Choun-Ki Joo, Jun-Sub Choi, Jae-Sik Yang, Geun-Hyeog Lee, Yun-Seok Cho, Jin-Ha Park, Hye-Sung Lee
  • Publication number: 20120294945
    Abstract: The present invention relates to a drug delivery composition comprising a hyaluronic acid-peptide conjugate micelle and a production method thereof. According to the drug delivery composition and the production method of the drug-loaded, hyaluronic acid-peptide conjugate micelle of the present invention, the reaction for encapsulating can proceed in a mixed solvent of an aqueous solvent and an organic solvent. Therefore, the present invention can be applied to various types of water-insoluble active components and the biocompatible and biodegradable derivative can encapsulate a drug to provide a drug-loaded micelle, which is safe to be applied for human bodies. Moreover, the micelle has a therapeutic effect from the peptide contained therein, which can act in combination with the drug as packing therein. Therefore, the drug delivery composition and its production method can be utilized in the field of producing a sustained release formulation with an extended duration of the medicinal effect.
    Type: Application
    Filed: December 15, 2011
    Publication date: November 22, 2012
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Sei Kwang HAHN, Choun-Ki Joo, Yoon Keun Kim, Seung Kew Yoon, Eun Ju Oh, Ki Su Kim, Hyemin Kim, Kitae Park, Jeong-A Yang, Jun-sub Choi, You Me Tae, Wonhee Hur
  • Patent number: 8242094
    Abstract: The present invention relates to a siRNA which targets mRNA of the NF-Kappa B p105 gene to cause its degradation by RNAi induction. In addition, the present invention provides a pharmaceutical composition for the treatment of diseases associated with aberrant cell proliferation and migration, comprising the siRNA and delivery vehicle capable of intracellular delivery of the same.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: August 14, 2012
    Assignee: Biopolymed, Inc.
    Inventors: Myung-Ok Park, Choun-Ki Joo, Jun-Sub Choi, Kyung-A Kim, Sung-Sik Bang
  • Publication number: 20110280929
    Abstract: The present invention relates to a siRNA which targets mRNA of the NF-Kappa B p105 gene to cause its degradation by RNAi induction. In addition, the present invention provides a pharmaceutical composition for the treatment of diseases associated with aberrant cell proliferation and migration, comprising the siRNA and delivery vehicle capable of intracellular delivery of the same.
    Type: Application
    Filed: August 22, 2008
    Publication date: November 17, 2011
    Inventors: Myung-Ok Park, Choun-Ki Joo, Jun-Sub Choi, Kyung-A Kim, Sung-Sik Bang