Patents by Inventor Dae Yoon

Dae Yoon 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: 20130338422
    Abstract: The present invention relates to an anticancer prodrug consisting of peptide of acetyl-SEQ ID NO: 1-linker-anticancer drug. The anticancer prodrug effectively provides an anticancer drug unstable in acid or base, such as doxorubicin, in a form of prodrug. Thus, the anticancer prodrug exists as a non-toxic inactive form when administered into the body, but effectively releases the anticancer drug as an active ingredient in the target area in the presence of caspase activated by radiation or UV treatment after administered into the body. Accordingly, the anticancer drug exhibits selective anticancer effects on cancer cells, thereby maximizing the therapeutic effect and minimizing the side-effects of chemotherapy.
    Type: Application
    Filed: March 2, 2011
    Publication date: December 19, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ju-Hee Ryu, Kwang-Meyung Kim, Ick-Chan Kwon, Kui-Won Choi, Sang-Yoon Kim, Beom-Suk Lee, Dae-Yoon Chi, Hee-Seup Kil, Hyun-Ju Sung
  • Patent number: 8497260
    Abstract: 2-arylbenzothiophene derivatives or pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition for the diagnosis or treatment of degenerative brain disease containing the same as an active ingredient. Since the 2-arylbenzothiophene derivatives of Formula 1 have a relatively high binding affinity for ?-amyloid, they can be used as diagnostic reagents for diagnosing Alzheimer's disease at an early stage by non-invasive techniques when they are labeled with radioisotopes: wherein R1-R4, V, W, X, Y and Z are as defined in the Detailed Descript of the specification. Further, when the pharmaceutical composition containing the 2-arylbenzothiophene derivative binds with a low-molecular weight ?-amyloid peptide binding compound, generation of malignant high-molecular weight ?-amyloid deposits is minimized. Accordingly, the pharmaceutical composition can be used as a therapeutic agent of degenerative brain disease such as Alzheimer's disease.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: July 30, 2013
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Dae Yoon Chi, Byoung Se Lee, Youjung Jung, Uthaiwan Sirion, Yoo Jin Lim, Yu Jin Bae, Heejun Kim, So Young Chu, Dae Hyuk Moon, Jin-Sook Ryu, Jae Seung Kim, Seung Jun Oh
  • Publication number: 20120238740
    Abstract: The present invention provides novel and advantageous processes for preparing and purifying pharmaceuticals The processes comprise a nucleophilic reaction wherein a modified leaving group LM, which has increased lipophilicity, of a vector in a nucleophilic reaction which offers a convenient and time-saving way to purify the product from non-reacted precursors vector-LM and by-products LM.
    Type: Application
    Filed: July 6, 2010
    Publication date: September 20, 2012
    Applicant: BAYER PHARMA AKTIENGESELLSCHAFT
    Inventors: Keith Graham, Mathias Berndt, Dae Yoon Chi, Byoung Se Lee, Sandip S. Shinde, Hee Seup Kil, Sang Ju Lee, Jin-Sook Ryu, Seung Jun Oh
  • Publication number: 20120214994
    Abstract: The present invention relates to (3-fluoro-2-hydroxy)propyl-functionalized aryl derivatives or to the pharmaceutically acceptable salt thereof, to a method for preparing same, and to a pharmaceutical composition containing same as active ingredients for the diagnosis or treatment of neurodegenerative brain diseases. The aryl derivatives of the present invention are (3-fluoro-2-hydroxy)propyl-functionalized to increase the polarity thereof, and therefore the drugs containing the aryl derivatives can easily permeate into the cerebrovascular membrane, thus increasing the effectiveness of the drugs. As the aryl derivatives of the present invention strongly bind to ?-amyloid, the aryl derivatives, when labeled with radioisotope, can be used as a diagnostic agent for non-invasively diagnosing early Alzheimer's disease.
    Type: Application
    Filed: September 14, 2010
    Publication date: August 23, 2012
    Inventors: Dae-Yoon Chi, Byoung-Se Lee, Sirion Uthaiwan, So-Young Chu, Yu-Jin Bae, Chansoo Park, Dae-Hyuk Moon, Jin-Sook Ryu, Jae-Seung Kim, Seung-Jun Oh
  • Publication number: 20110213121
    Abstract: Disclosed are a nanoparticle sensor for measuring protease activity, for protease imaging, and a method for preparing the same. More specifically, the present invention relates to a nanoparticle sensor for measuring protease activity in which a fluorophore- and a quencher-conjugated peptide substrate is conjugated to a biocompatible polymer nanoparticle. The peptide substrate is specifically lysed by a protease. The sensor according to the present invention is capable of inhibiting emission of fluorescence with high extinctive activity of the quencher on a fluorescent material. But strong fluorescence is specifically emitted only if the peptide substrate is lysed by a specific protease. Therefore, the sensor is especially useful as a method for screening a novel drug such as a protease overexpression inhibitor, and early diagnosis of incurable diseases and various diseases such as autoimmune diseases including cancer, osteoarthritis, rheumatoid arthritis and dementia.
    Type: Application
    Filed: August 27, 2009
    Publication date: September 1, 2011
    Inventors: Ick-Chan Kwon, Kui-Won Choi, Kwang-Meyung Kim, In-Chan Youn, Seul-Ki Lee, Kyeong-Soon Park, Dae-Hyuk Moon, Dae-Yoon Chi, Seung-Jin Lee, Seung-Jae Myung
  • Patent number: 7971562
    Abstract: A continuous variable valve lift device includes a valve, which opens/closes a channel by means of reciprocation, a control shaft, which is mounted so as to be able to move toward or away from a reciprocation central axis of the valve, a pivotable shoe, which is pivotably coupled to the control shaft, includes a cam insertion part in a recess or through-hole shape and a slide face slidably contacting an end of the valve, and reciprocates the valve when pivoted, and a drive cam, which comes into contact with an inner wall of the cam insertion part, and pivots the pivotable shoe. Thereby, the continuous variable valve lift device can freely adjust a lift amount and a lift time of the valve without changing positions of the drive cam and camshaft, and thus be easily applied to an existing engine.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 5, 2011
    Assignee: Hyundai Motor Company
    Inventors: Myungsik Choi, Kyoung Pyo Ha, Chun Woo Lee, Woo Tae Kim, Hyung Ick Kim, Yooshin Cho, Ingee Suh, Back Sik Kim, Dae Sung Kim, Dae Yoon Oh, Dong Hee Han
  • Publication number: 20110112293
    Abstract: The present invention provides novel and advantageous processes for preparing and purifying chemical compounds such as pharmaceuticals. The processes comprise a nucleophilic substitution reaction with a moiety X wherein the leaving group L of a substrate S in the reaction is covalently attached to a purification moiety M. This concept offers a convenient and lime-saving way to purity the desired product S-X from non-reacted precursors S-L-M and by-products L-M.
    Type: Application
    Filed: April 9, 2009
    Publication date: May 12, 2011
    Applicant: BAYER SCHERING PHARMA AKTIENGESELLSCHAFT
    Inventors: John Cyr, Ananth Srinivasan, Mathias Berndt, Keith Graham, Dae Yoon Chi, Byoung Se Lee, So Young Chu, Song-Yi Lim, Sang Ju Lee, Jin-Sook Ryu, Seung Jun Oh
  • Patent number: 7847092
    Abstract: The present invention relates to a method for preparation of organofluoro compounds containing radioactive isotope fluorine-18. More particularly, the present invention relates to a method for preparation of primary or secondary organofluoro compound by reacting fluorine salt containing radioactive isotope fluorine-18 with primary or secondary alkyl halide or primary or secondary alkyl sulfonate in the presence of alcohol of Chemical Formula 1 as a solvent to obtain high yield of organofluoro compound. Synthesis reaction according to the present invention may be carried out under mild condition to give high yield of the organofluoro compounds and the reaction time is decreased, and thereby is suitable for the mass production of the organofluoro compounds.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 7, 2010
    Assignees: FutureChem Co., Ltd., The Asan Foundation
    Inventors: Dae Hyuk Moon, Dae Yoon Chi, Dong Wook Kim, Seung Jun Oh, Jin-sook Ryu
  • Publication number: 20100261727
    Abstract: 2-arylbenzothiophene derivatives or pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition for the diagnosis or treatment of degenerative brain disease containing the same as an active ingredient. Since the 2-arylbenzothiophene derivatives of Formula 1 have a relatively high binding affinity for ?-amyloid, they can be used as diagnostic reagents for diagnosing Alzheimer's disease at an early stage by non-invasive techniques when they are labeled with radioisotopes: wherein R1-R4, V, W, X, Y and Z are as defined in the Detailed Descript of the specification. Further, when the pharmaceutical composition containing the 2-arylbenzothiophene derivative binds with a low-molecular weight ?-amyloid peptide binding compound, generation of malignant high-molecular weight ?-amyloid deposits is minimized. Accordingly, the pharmaceutical composition can be used as a therapeutic agent of degenerative brain disease such as Alzheimer's disease.
    Type: Application
    Filed: October 15, 2009
    Publication date: October 14, 2010
    Inventors: Dae Yoon Chi, Byoung Se Lee, Youjung Jung, Uthaiwan Sirion, Yoo Jin Lim, Yu Jin Bae, Heejun Kim, So Young Chu, Dae Hyuk Moon, Jin-Sook Ryu, Jae Seung Kim, Seung Jun Oh
  • Publication number: 20100217003
    Abstract: Provided are 7-hydroxy-6-methoxy-1,2,3,4-tetrahydroisoquinoline derivatives and synthesis methods thereof. The compounds significantly inhibit the production of nitrogen monoxide (NO) and superoxide in an activated microglial cell and expressions of TNF-?, IL-1? inducive NO synthase and cyclooxygenase-2 genes. They also prevent NF-kB shift to a nucleus, decrease reactive oxygen species (ROS), inhibit expression of GTP cyclohydrolase I gene and over-production of tetrahydrobiopterin (BH4), and protect dopaminergic neurons from injury due to activated microglial cells. Consequently, the compounds are effective in treating inflammatory and neurodegenerative diseases.
    Type: Application
    Filed: December 10, 2007
    Publication date: August 26, 2010
    Inventors: On-You Hwang, Dae-Yoon Chi, Hyo-Jin Son, Jai-Woong Seo
  • Publication number: 20100113763
    Abstract: The present invention relates to a method for preparation of organofluoro compounds containing radioactive isotope fluorine-18. More particularly, the present invention relates to a method for preparation of organofluoro compound [18F]florbetaben or [18F]AV-45 having <Chemistry Formula 11> and <Chemistry Formula 12>, respectively, by reacting fluorine salt containing radioactive isotope fluorine-18 with alkyl halide or alkyl sulfonate in the presence of alcohol of Chemistry Formula 1 as a solvent to obtain high yield of organofluoro compound. Synthesis reaction according to the present invention may be carried out under mild condition to give high yield of the organofluoro compounds and the reaction time is decreased, and thereby is suitable for the mass production of the organofluoro compounds.
    Type: Application
    Filed: October 26, 2009
    Publication date: May 6, 2010
    Applicants: FUTURECHEM CO., LTD., THE ASAN FOUNDATION
    Inventors: Dae Hyuk MOON, Dae Yoon CHI, Dong Wook KIM, Seung Jun OH, Jin-sook RYU
  • Publication number: 20090255496
    Abstract: A continuous variable valve lift device includes a valve, which opens/closes a channel by means of reciprocation, a control shaft, which is mounted so as to be able to move toward or away from a reciprocation central axis of the valve, a pivotable shoe, which is pivotably coupled to the control shaft, includes a cam insertion part in a recess or through-hole shape and a slide face slidably contacting an end of the valve, and reciprocates the valve when pivoted, and a drive cam, which comes into contact with an inner wall of the cam insertion part, and pivots the pivotable shoe. Thereby, the continuous variable valve lift device can freely adjust a lift amount and a lift time of the valve without changing positions of the drive cam and camshaft, and thus be easily applied to an existing engine.
    Type: Application
    Filed: September 5, 2008
    Publication date: October 15, 2009
    Applicant: Hyundai Motor Company
    Inventors: Myungsik Choi, Kyoung Pyo Ha, Chun Woo Lee, Woo Tae Kim, Hyung Ick Kim, Yooshin Cho, Ingee Suh, Back Sik Kim, Dae Sung Kim, Dae Yoon Oh, Dong Hee Han
  • Patent number: 7549760
    Abstract: A backlight assembly includes a plurality of lamps, a first reflecting plate and an optical member. The lamps are disposed substantially parallel with each other and generate light. The bottom reflecting plate is disposed under the lamps to reflect the light. The first reflecting plate is disposed over the lamps to transmit and reflect the light and has a plurality of penetration holes for transmitting the light. The optical member is disposed over the first reflecting plate. The formation density of the penetration holes increases as a position of the penetration holes approaches an intermediate region between adjacent lamps from a region corresponding to a position of the lamps.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: June 23, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Yoon Jung, Kwang-Hoon Lee
  • Patent number: 7401968
    Abstract: A backlight assembly having improved strength and a display device having the backlight assembly are provided. The backlight assembly includes a light source supplying light and a fixing member receiving the light source. A deflection preventing portion having a predetermined width is formed on a surface of the fixing member in a direction crossing a diagonal on the surface of the fixing member.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: July 22, 2008
    Assignee: Samsung Electronic Co., Ltd.
    Inventors: Dae-Yoon Jung, Jeoung-Gwen Lee, Mi-Sook Kim
  • Publication number: 20080171863
    Abstract: The present invention relates to a method for preparation of organofluoro compounds containing radioactive isotope fluorine-18. More particularly, the present invention relates to a method for preparation of organofluoro compound by reacting fluorine salt containing radioactive isotope fluorine-18 with alkyl halide or alkyl sulfonate in the presence of alcohol of Chemistry (FIG. 1) as a solvent to obtain high yield of organofluoro compound. Synthesis reaction according to the present invention may be carried out under mild condition to give high yield of the organofluoro compounds and the reaction time is decreased, and thereby is suitable for the mass production of the organofluoro compounds.
    Type: Application
    Filed: December 9, 2005
    Publication date: July 17, 2008
    Applicants: FUTURECHEM CO., LTD., THE ASAN FOUNDATION
    Inventors: Dae Hyuk Moon, Dae Yoon Chi, Dong Wook Kim, Seung Jun Oh, Jin-sook Ryu
  • Publication number: 20080117577
    Abstract: Disclosed are a chassis, and a backlight unit and a liquid crystal display including the chassis. The chassis includes a first chassis member that includes a first base plate, a first wall extending from the first base plate in a first direction, and a first cover plate extending from the first wall and facing the first base plate. The chassis also includes a second chassis member.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 22, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Yong KANG, Choong Sik KIM, Dae Yoon JUNG
  • Publication number: 20080079863
    Abstract: A liquid crystal display device, includes a liquid crystal panel, a light guide plate which is provided behind the liquid crystal panel and comprises an exit surface facing the liquid crystal panel, a reflecting surface opposite the exit surface, a pair of incident surfaces opposite to each other, and a pair of side surfaces opposite to each other, a pair of light sources provided along the respective incident surfaces of the light guide plate, and a pair of cover members, each of the cover members comprises a first part accommodating one of the light sources with one of the incident surfaces cover member and a second part extending from the first part and facing the reflecting surface of the light guide plate, and over which the liquid crystal panel is seated.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 3, 2008
    Inventors: Dae-yoon Jung, Seong-sik Choi
  • Publication number: 20080055518
    Abstract: A liquid crystal display includes an upper cover comprising a display window, a liquid crystal panel provided behind the upper cover, a light guide plate provided behind the liquid crystal panel, a light source unit provided along a side of the light guide plate, and a light source cover which comprises a reflection unit that is joined to the upper cover and reflects light emitted from the light source unit to the light guide, and a support unit that extends from a side of the reflection unit to a rear of the light guide plate.
    Type: Application
    Filed: June 1, 2007
    Publication date: March 6, 2008
    Inventor: Dae-yoon Jung
  • Publication number: 20080018828
    Abstract: In a backlight assembly, a liquid crystal display (“LCD”) apparatus including the backlight assembly and a method for manufacturing the backlight assembly, the backlight assembly includes first, second, third and fourth lamps. The first to fourth lamps respectively face first to fourth side surfaces of a light-guide plate. Each include an input and an output terminal. The output terminals of the first and second lamps and of the third and fourth lamps, and the input terminals of the first and fourth lamps and of the second and third lamps, are adjacent to each other. A pair of the output terminals of the first and second lamps or the third and fourth lamps is connected to each other, so that the pair of lamps is arranged in an L-shape. The pair of the output terminals may be fed back to each input terminal, or grounded to a receiving container.
    Type: Application
    Filed: July 19, 2007
    Publication date: January 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Kwang-Hoon LEE, Dae-Yoon JUNG, Choong-Sik KIM
  • Publication number: 20070268721
    Abstract: A backlight assembly includes a plurality of lamps, a first reflecting plate and an optical member. The lamps are disposed substantially parallel with each other and generate light. The bottom reflecting plate is disposed under the lamps to reflect the light. The first reflecting plate is disposed over the lamps to transmit and reflect the light and has a plurality of penetration holes for transmitting the light. The optical member is disposed over the first reflecting plate. The formation density of the penetration holes increases as a position of the penetration holes approaches an intermediate region between adjacent lamps from a region corresponding to a position of the lamps.
    Type: Application
    Filed: February 20, 2007
    Publication date: November 22, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-Yoon JUNG, Kwang-Hoon LEE