Patents by Inventor Se-In Chang

Se-In Chang 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).

  • Publication number: 20200126625
    Abstract: A memory device includes an erase operation controller for performing an erase operation on a memory block; an erase suspend count manager for managing an erase suspend count representing a number of times the erase operation is suspended until the erase operation on the memory block is completed; and a program parameter value determiner for determining a parameter value to be used for a program operation on the memory block, based on the erase suspend count.
    Type: Application
    Filed: May 24, 2019
    Publication date: April 23, 2020
    Inventor: Se Chang PARK
  • Publication number: 20200101171
    Abstract: The present invention relates to an insulin analog conjugate and use thereof.
    Type: Application
    Filed: March 23, 2018
    Publication date: April 2, 2020
    Applicant: HANMI PHARM. CO., LTD.
    Inventors: Young Jin PARK, In Young CHOI, Sung Youb JUNG, Se Chang KWON
  • Publication number: 20200105351
    Abstract: A memory system includes a memory cell array including a plurality of memory cells; a peripheral circuit configured to apply a read voltage to a selected word line coupled to a selected memory cell among the memory cells, and apply a pass voltage to unselected word lines coupled to unselected memory cells other than the selected memory cell among the memory cells, during a read operation; and a controller configured to control the peripheral circuit, and apply a variable voltage level of the pass voltage based on status information of a target memory block which is the target of the read operation.
    Type: Application
    Filed: July 12, 2019
    Publication date: April 2, 2020
    Inventors: Se Chang PARK, Jong Wook KIM
  • Publication number: 20200098439
    Abstract: A memory system may include a memory cell array including a plurality of memory blocks; a peripheral circuit configured to apply a check voltage for acquiring check data to a target memory block and apply program voltages to the target memory block in a pre-program operation for the target memory block; and a controller configured to control the peripheral circuit, determine status information on the target memory block based on the check data, and variably apply a program start voltage to the target memory block based on the status to information in the pre-program operation.
    Type: Application
    Filed: April 10, 2019
    Publication date: March 26, 2020
    Inventor: Se Chang PARK
  • Publication number: 20200085913
    Abstract: Provided is a complex composition, of which positional isomers are minimized by using a N-terminus of an immunoglobulin Fc region as a binding site when the immunoglobulin Fc region is used as a carrier. Also provided are a protein complex which is prepared by N-terminal-specific binding of immunoglobulin Fc region, thereby prolonging blood half-life of the physiologically active polypeptide, maintaining in vivo potency at a high level, and having no risk of immune responses, a preparation method thereof, and a pharmaceutical composition including the same for improving in vivo duration and stability of the physiologically active polypeptide. The protein complex may be usefully applied to the development of long-acting formulations of various physiologically active polypeptide drugs.
    Type: Application
    Filed: October 28, 2019
    Publication date: March 19, 2020
    Applicant: HANMI PHARM. CO., LTD
    Inventors: Dae Jin KIM, Jong Soo LEE, Young Jin PARK, Sung Hee HONG, Sung Min BAE, Se Chang KWON
  • Patent number: 10550168
    Abstract: Disclosed are a composition for preventing or treating diabetes, disbesity or diabetic complications, containing an oxyntomodulin analog as an active ingredient and a method for treating diabetes, diabesity or diabetic complications, including administering a pharmaceutically effective amount of an oxyntomodulin analog to a subject. The oxyntomodulin analog shows a greater activity to activate a GLP-1 receptor and a glucagon receptor, than native oxyntomodulin. The oxyntomodulin analog induces an expansion of beta-cells and increases insulin secretion, thereby reducing blood glucose levels that were increased due to a high-calorie and high-fat diet. The oxyntomodulin analog induces decreases in a body weight and appetite to improve insulin sensitivity and is useful in maintaining normal blood glucose levels.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: February 4, 2020
    Assignee: Hanmi Pharm. Co., Ltd.
    Inventors: Jin Sun Kim, Dae Jin Kim, Sang Hyun Lee, Sung Youb Jung, Se Chang Kwon
  • Publication number: 20200020406
    Abstract: A memory device includes a memory cell array including a plurality of memory blocks; a peripheral circuit configured to sequentially perform a channel initialization operation and a read operation on a memory block selected from among the plurality of memory blocks; and control logic configured to control the peripheral circuit to perform the channel initialization operation and the read operation, wherein the control logic sets a time during which the channel initialization operation is to be performed as channel initialization period depending on a potential level of supply voltage, the channel initialization operation being performed to remove hot holes in a channel of the selected memory block.
    Type: Application
    Filed: December 24, 2018
    Publication date: January 16, 2020
    Inventors: Jong Wook KIM, Se Chang PARK
  • Publication number: 20200020475
    Abstract: A coil electronic component includes a body and external terminals. The body includes a winding coil part and a pillar-shaped core part inserted inside of the winding coil part and formed of a magnetic metal. The external terminals are connected to the winding coil part and disposed on an external surface of the body. The body contains the magnetic metal and a resin, and the pillar-shaped core part has magnetic permeability higher than that of a portion of the body disposed outside of the winding coil part.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Inventors: Hyung Ho KIM, Yong Suk KIM, Gun Se CHANG, Young Seuck YOO
  • Publication number: 20190392901
    Abstract: The present disclosure relates to an electronic device. A storage device having improved reliability may include a memory device performing a program operation of storing data in selected memory cells, among a plurality of memory cells included in a memory block, and a memory controller controlling the memory device to perform a retention control operation of applying a retention control voltage to at least one source line coupled to a plurality of memory cell strings included in the memory block for a predetermined time duration when the program operation is completed.
    Type: Application
    Filed: December 28, 2018
    Publication date: December 26, 2019
    Inventors: Dong Uk LEE, Se Chang PARK
  • Patent number: 10513550
    Abstract: The present invention relates to a novel peptide of a glucagon derivative and a composition for preventing or treating obesity comprising the peptide as an active ingredient. The glucagon derivative according to the present invention shows a more excellent activating effect with regard to both glucagon-like peptide-1 receptors and glucagon receptors compared to native glucagon, and thus can be widely used as an effective agent for treating obesity.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: December 24, 2019
    Assignee: HANMI PHARM CO., LTD
    Inventors: Sung Youb Jung, Young Jin Park, Jong Suk Lee, Jae Hyuk Choi, Chang Ki Lim, Se Chang Kwon
  • Patent number: 10493132
    Abstract: The present invention relates to a composition for preventing or treating hyperlipidemia, fatty liver disease or arteriosclerosis, comprising an oxyntomodulin derivative as an active ingredient. The oxyntomodulin derivative has a high ability to activate GLP-1 receptor and glucagon receptor compared to native oxyntomodulin and has the effects of reducing the blood total cholesterol, low-density cholesterol and triglyceride levels that were increased by high-fat diet, and increasing high-density cholesterol levels and the high-density cholesterol/low-density cholesterol ratio. Thus, the oxyntomodulin derivative can be effectively used for the treatment of hyperlipidemia and related diseases.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 3, 2019
    Assignee: Hanmi Pharm. Co., Ltd.
    Inventors: Sung Youb Jung, Jin-Sun Kim, Myung Hyun Jang, Sang Hyun Lee, In Young Choi, Se Chang Kwon
  • Patent number: 10487128
    Abstract: Provided is a long-acting pharmaceutical composition containing a conjugate comprising a physiologically active polypeptide linked to an immunoglobulin Fc fragment, wherein the composition contains a monomeric conjugate comprising one molecule of the physiologically active polypeptide linked to a single immunoglobulin Fc fragment, and optionally contains a multimeric conjugate comprising two or more molecules of the same physiologically active polypeptide linked to a single immunoglobulin Fc fragment, provided that the molar ratio of the monomeric conjugate to the multimeric conjugate in the composition is at least 19; a physiologically active polypeptide monomer-immunoglobulin Fc fragment conjugate that comprises a physiologically active polypeptide monomer linked via a non-peptidyl linker to an immunoglobulin Fc fragment, wherein the physiologically active polypeptide is linked via the non-peptidyl linker to the immunoglobulin Fc fragment in a monomeric form.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: November 26, 2019
    Assignee: HANMI PHARM. CO., LTD
    Inventors: Sung Hee Park, Min Young Kim, Hyung Kyu Lim, Sung Min Bae, Sung Youb Jung, Se Chang Kwon
  • Publication number: 20190321485
    Abstract: The present invention relates to a conjugate comprising oxyntomodulin, an immunoglobulin Fc region, and non-peptidyl polymer wherein the conjugate being obtainable by covalently linking oxyntomodulin to immunoglobulin Fc region via non-peptidyl polymer, and a pharmaceutical composition for the prevention or treatment of obesity comprising the conjugates. The conjugate comprising oxyntomodulin and the immunoglobulin Fc of the present invention reduces food intake, suppresses gastric emptying, and facilitates lipolysis without side-effects, unlike native oxyntomodulin, and also shows excellent receptor-activating effects and long-term sustainability, compared to native oxyntomodulin. Thus, it can be widely used in the treatment of obesity with safety and efficacy.
    Type: Application
    Filed: July 9, 2019
    Publication date: October 24, 2019
    Inventors: SUNG YOUB JUNG, DAE JIN KIM, SUNG HEE PARK, YOUNG EUN WOO, IN YOUNG CHOI, SE CHANG KWON
  • Patent number: 10442848
    Abstract: The present invention relates to a novel peptide showing more excellent activities on a glucagon like peptide-1 receptor and a glucagon receptor than native oxyntomodulin, and a composition for the prevention or treatment of obesity comprising the peptide as an active ingredient. Unlike native oxyntomodulin, the novel peptide of the present invention reduces food intake, suppresses gastric emptying, and facilitates lipolysis with reduced side-effects, and also shows excellent receptor-activating effects. Thus, it can be widely used in the treatment of obesity with safety and efficacy.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: October 15, 2019
    Assignee: Hanmi Science Co., Ltd.
    Inventors: Sung Youb Jung, Myung Hyun Jang, Ling Ai Shen, Young Kyung Park, Young Jin Park, Se Chang Kwon
  • Patent number: 10441665
    Abstract: Provided are a liquid formulation of long-acting insulinotropic peptide conjugate, containing a pharmaceutically effective amount of long-acting insulinotropic peptide conjugate consisting of a physiologically active peptide, insulinotropic peptide, and an immunoglobulin Fc region; and an albumin-free stabilizer, wherein the stabilizer comprises a buffer, a sugar alcohol, and a non-ionic surfactant, and a method for preparing the formulation. For the purpose of preventing microbial contamination, a preservative may be added. The liquid formulation of the present invention is free of human serum albumin and other potentially hazardous factors to body, having no risk of viral contamination, and thus can provide excellent storage stability for insulinotropic peptide conjugates at high concentration.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: October 15, 2019
    Assignee: HANMI PHARM. CO., LTD.
    Inventors: Hyun Uk Kim, Hyung Kyu Lim, Sung Hee Hong, Dae Jin Kim, Sung Min Bae, Se Chang Kwon
  • Patent number: 10435459
    Abstract: The present invention relates to a pharmaceutical composition for the prevention or treatment of non-alcoholic fatty liver disease including a long-acting GLP-1/glucagon receptor dual agonist, and a method for preventing or treatment of non-alcoholic fatty liver disease including administering the composition. The composition of the present invention either has no side effect of weight gain or reduces the side effect of weight gain, which is a side-effect of conventional therapeutic agents for non-alcoholic fatty liver disease, and reduces the amount of administrations of a long-acting GLP-1/glucagon receptor dual agonist, thus greatly improving patient's convenience. In addition, the long-acting GLP-1/glucagon receptor dual agonist of the present invention improves in vivo sustainability and stability.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: October 8, 2019
    Assignee: Hanmi Pharm. Co., Ltd.
    Inventors: Sang Youn Hwang, Jin Young Kim, Seung Su Kim, In Young Choi, Sung Youb Jung, Se Chang Kwon
  • Publication number: 20190269787
    Abstract: Disclosed is an IgG Fc fragment useful as a drug carrier. A recombinant vector expressing the IgG Fc fragment, a transformant transformed with the recombinant vector, and a method of preparing an IgG Fc fragment are disclosed. When conjugated to a certain drug, the IgG Fc fragment improves the in vivo duration of action of the drug and minimizes the in vivo activity reduction of the drug.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 5, 2019
    Applicant: HANMI SCIENCE CO., LTD.
    Inventors: Sung Youb Jung, Jin Sun Kim, Geun Hee Yang, Se Chang Kwon, Gwan Sun Lee
  • Publication number: 20190269779
    Abstract: The present invention relates to an albumin-free liquid formulation comprising a long-lasting oxyntomodulin conjugate in which an oxyntomodulin peptide comprising a derivative, variant, precursor or fragment of oxyntomodulin is linked to an immunoglobulin Fc region, which can increase the duration of physiological activity of the long-lasting oxyntomodulin conjugate and maintain the in vivo stability thereof for an extended period of time, as compared to native oxyntomodulin, as well as a method for preparing the liquid formulation. The liquid formulation comprises a buffer, a sugar alcohol and a nonionic surfactant and does not contain a human serum albumin and factors that are potentially harmful to the human body, and thus is not susceptible to viral infection.
    Type: Application
    Filed: March 18, 2019
    Publication date: September 5, 2019
    Inventors: HYUN UK KIM, HYUNG KYU LIM, MYUNG HYUN JANG, SANG YUN KIM, SUNG MIN BAE, SE CHANG KWON
  • Patent number: 10400020
    Abstract: The present invention relates to a long-acting conjugate of a triple agonist having activities to all of glucagon, GLP-1, and GIP receptors and uses thereof.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: September 3, 2019
    Assignee: HANMI PHARM. CO., LTD.
    Inventors: Euh Lim Oh, Jong Suk Lee, Young Jin Park, Chang Ki Lim, Sung Youb Jung, Se Chang Kwon
  • Patent number: 10370426
    Abstract: The present invention relates to a triple agonist having activities to all of glucagon, GLP-1, and GIP receptors and uses thereof.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 6, 2019
    Assignee: HANMI PHARM. CO., LTD
    Inventors: Euh Lim Oh, Jong Suk Lee, Young Jin Park, Chang Ki Lim, Sung Youb Jung, Se Chang Kwon