Patents by Inventor Sun-Hwan Lee

Sun-Hwan Lee 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: 11950502
    Abstract: Provided is a novel compound capable of improving the luminous efficiency, stability and life span of a device, an organic electric element using the same, and an electronic device thereof.
    Type: Grant
    Filed: April 17, 2021
    Date of Patent: April 2, 2024
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Hyoung Keun Park, Yun Suk Lee, Ki Ho So, Jong Gwang Park, Yeon Seok Jeong, Jung Hwan Park, Sun Hee Lee, Hak Young Lee
  • Publication number: 20240074284
    Abstract: A display device includes: a display panel including a first region including a transmissive part configured to transmit light provided from the outside and a second region not including the transmissive part; and a sensor overlapping with the transmissive part, and configured to obtain electrical information based on information provided from the outside, wherein the display panel includes: a thin film transistor layer including a plurality of transistors; a pixel defining layer defining an emission region of a plurality of pixels; and a light blocking layer on the pixel defining layer, and defining the transmissive part, and wherein the pixel defining layer in the first region covers at least a portion of the thin film transistor layer such that light provided through the transmissive part is blocked.
    Type: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Inventors: Sun Ho KIM, Sun Hee LEE, Gun Hee KIM, Dong Hwan SHIM, Yoo Min KO, Chea Eun KIM
  • Publication number: 20240074261
    Abstract: A display device includes a display area which includes a first display area including a plurality of first pixels and a second display area including at least one second pixel and at least one light-transmitting portion, a peripheral area disposed around the display area, a data line including a first portion and a second portion spaced apart from each other in a predetermined direction with the light-transmitting portion therebetween, and a conductive pattern disposed at a different conductive layer from the data line. The conductive pattern includes a first pattern portion including a bypass portion that bypasses a periphery of the second display area in a plan view and disposed in the first display area, and the first pattern portion includes a first end electrically connected to the first portion of the data line and a second end electrically connected to the second portion of the data line.
    Type: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Inventors: Sun Ho KIM, Gun Hee KIM, Dong Hwan SHIM, Tae Hoon YANG, Sun Hee LEE
  • Patent number: 11912910
    Abstract: A conductive film laminate according to an embodiment of the present disclosure includes a carrier substrate, a conductive film liner on the carrier substrate, and a conductive adhesive film formed on the conductive film liner. The conductive film liner and the conductive adhesive film may form a cut pattern which does not cover the entire carrier substrate. The conductive adhesive film having a narrow width can be stably supplied on the carrier substrate. The conductive adhesive film may be used as an anisotropic conductive film for a bonding process of a touch sensor.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: February 27, 2024
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hyuk Hwan Kwon, Sun Kwon Ahn, Chang Yong Lee
  • Publication number: 20140154330
    Abstract: Disclosed are spherical particles of clopidogrel bisulfate and a pharmaceutical composition containing the same. The spherical particles can be used for preparing a tablet having sufficient hardness through direct compression, by improving unformulable properties of clopidogrel bisulfate such as compressibility, flowability and strong surface electrostatic charges, reduce a problem in compressing tablets such as weight variation, sticking, etc., and the risk of form conversion, and improve physiochemical stability. Therefore, the spherical particles of the present invention may be used as therapeutics for arteriosclerosis, stroke, myocardial infarction and atherosclerosis.
    Type: Application
    Filed: October 27, 2011
    Publication date: June 5, 2014
    Applicants: ASTECH. CO., LTD., SAMJIN PHARMACEUTICAL CO., LTD.
    Inventors: Eui Hwan Cho, Hee Jong Shin, Woo Heon Song, Sun Hwan Lee, Jong Bae Yoon, Jong Sung Park
  • Patent number: 7851479
    Abstract: A pyrimidinedione derivative of formula (I) or a pharmaceutically acceptable salt thereof exhibits excellent inhibitory activity against hepatitis C virus.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: December 14, 2010
    Assignee: Samjin Pharm. Co., Ltd.
    Inventors: Ho-Seok Kwon, Jae-Woong Lee, Sun-Hwan Lee, Young-Hee Lee, Jeong-Ho Joo, Sun-Gan Chung, Hyun-Tae Kim, Eui-Hwan Cho, Hyun-Nam Myung
  • Publication number: 20090023764
    Abstract: A pyrimidinedione derivative of formula (I) or a pharmaceutically acceptable salt thereof exhibits excellent inhibitory activity against hepatitis C virus.
    Type: Application
    Filed: February 8, 2007
    Publication date: January 22, 2009
    Applicant: SAMJIN PHARM. CO., LTD.
    Inventors: Ho-Seok Kwon, Jae-Woong Lee, Sun-Hwan Lee, Young-Hee Lee, Jeong-Ho Joo, Sun-Gan Chung, Hyun-Tae Kim, Eui-Hwan Cho, Hyun-Nam Myung
  • Patent number: 7230105
    Abstract: The present invention relates to a new 9-aminoacridine derivative which exhibits prominent antitumor activity and low toxicity.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: June 12, 2007
    Assignee: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Dong-Wook Kang
  • Patent number: 6987114
    Abstract: The present invention relates to pyrimidinedione derivatives of following formula (I) which are useful as antiviral agents, especially as agents for treatment of AIDS, pharmaceutically acceptable salts thereof, process for the preparation thereof and pharmaceutical compositions containing the same, wherein R represents cyclopropyl; cyclobutyl; cyclohexyl; unsubstituted or mono-, di- or trisubstituted phenyl with a group selected from hydroxy, C1–C4 alkyl, C1–C4 alkoxy, halogen, trifluoromethyl, cyano and amino; 1- or 2-naphthyl; 9-anthracenyl; 2-anthraquinonyl; unsubstituted or substituted pyridyl with a group selected from C1–C4 alkyl, C1–C4 alkoxy, cyano and halogen; 2-, 3- or 4-quinolinyl; oxiranyl; 1-benzotriazolyl; 2-benzoxazolyl; furanyl substituted with C1–C4 alkoxycarbonyl; C1–C4 alkylcarbonyl; or benzoyl, R1 represents halogen or C1–C4 alkyl, R2 and R3 represent independently hydrogen or C1–C4 alkyl, X represents oxygen atom, and Y represents oxygen atom, sulfur atom or carbonyl.
    Type: Grant
    Filed: April 8, 2000
    Date of Patent: January 17, 2006
    Assignee: Samjin Pharmaceutical Co., Ltd
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Jae-Eung Lee, Jeong-Ho Joo
  • Publication number: 20050222167
    Abstract: The present invention relates to a new 9-aminoacridine derivative which exhibits prominent antitumor activity and low toxicity.
    Type: Application
    Filed: March 7, 2002
    Publication date: October 6, 2005
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Dong-Wook Kang
  • Patent number: 6683184
    Abstract: The present invention relates to a novel compound of formula (I) and its pharmaceutically acceptable acid addition salt, and process for the preparation thereof, which have strong antitumor activities and very low toxicity: wherein R1 and R2 are independently hydrogen, C1-C4 alkyl, C1-C4 alkylcarboxyl, C1-C4 alkylcarbonyl, C1-C4 alkoxy, C1-C4 hydroxyalkyl, C1-C4 aminoalkyl or C1-C4 hydroxyiminoalkyl, or R1 and R2 are fused to form C3-C4 unsaturated ring; R3, R4, R5, R6 and R7 are independently hydrogen, halogen, hydroxy, nitro, amino, C1-C4 alkyl, C1-C4 alkylcarboxyl, C1-C4 alkylcarbonyl, C1-C4 alkoxy, C1-C4 thioalkoxy; R8 is C1-C4 alkyl; Y is oxygen, sulphur, amino, subsitituted amino or C1-C4 thioalkyl; Z is C1-C4 alkoxy, C1-C4 alkyl, C1-C4 alkylamino or C1-C4 thioalkoxy; X1 and X2 are independently CH or nitrogen; and —N═C— and —C═Y— may form a single bond or a double bond provided that if —N═C— forms a single bond, —C═Y&md
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: January 27, 2004
    Assignee: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Dong-Wook Kang, Jeong-Ho Joo, Young-Hee Lee
  • Patent number: 6620936
    Abstract: The present invention relates to new 9-aminoacridine derivatives of general formula (I), wherein A is hydrogen or (II) (wherein X is oxygen or sulfur, R1, R2, R3, R4 and R5 are independently hydrogen, halogen, nitro, amino, hydroxy, C1-C4 lower alkylhydroxy, C1-C4 lower alkylamino, C1-C8 alkyl, C1-C4 lower alkoxy or C1-C4 lower alkyloxycarbonyl and m and n are independently an integer of 0, 1 or 2), R6, R7, R8 and R9 are independently C1-C8 alkyl or C1-C4 lower alkoxy, and Y is hydrogen, amino, —N═CHR′(wherein R′ is hydrogen, benzyl, C1-C8 alkyl or C1-C6 lower alkylamino), (III) (wherein R″ is hydrogen, benzyl, C1-C8 alkyl or C1-C6 lower alkylamino, and R′″ is hydrogen, benzyl, C1-C8 alkyl or amino protecting group) or (IV) (wherein, X is as defined above, R1′, R2′, R3′, R4′ and R5′ are independently hydrogen, halogen, nitro, amino, hydroxy, C1-C4 lower alkylhydroxy, C1-C4 lower alkylamino, C1-C8 alkyl, C1-C4 lower alkoxy or C1-C4 lower al
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: September 16, 2003
    Assignee: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Dong-Wook Kang, Jeong-Ho Joo
  • Publication number: 20030092910
    Abstract: The present invention relates to a novel compound of the general formula (I) and its pharmaceutically acceptable acid addition salt, and process for the preparation thereof, which have strong antimumor activities and very low toxicity.
    Type: Application
    Filed: March 26, 2002
    Publication date: May 15, 2003
    Applicant: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Dong-Wook Kang, Jeong-Ho Joo, Young-Hee Lee
  • Publication number: 20020111491
    Abstract: The present invention relates to new 9-aminoacridine derivatives of general formula (I), wherein A is hydrogen or (II) (wherein X is oxygen or sulfur, R1, R2, R3, R4 and R5 are independently hydrogen, halogen, nitro, amino, hydroxy, C1-C4 lower alkylhydroxy, C1-C4 lower alkylamino, C1-C8 alkyl, C1-C4 lower alkoxy or C1-C4 lower alkyloxycarbonyl and m and n are independently an integer of 0, 1 or 2), R6, R7, R8 and R9 are independently C1-C8 alkyl or C1-C4 lower alkoxy, and Y is hydrogen, amino, -N═CHR′(wherein R′ is hydrogen, benzyl, C1-C8 alkyl or C1-C6 lower alkylamino), (III) (wherein R″ is hydrogen, benzyl, C1-C8 alkyl or C1-C6 lower alkylamino, and R′″ is hydrogen, benzyl, C1-C8 alkyl or amino protecting group) or (IV) (wherein, X is as defined above, R1′, R2′, R3′, R4′ and R5′ are independently hydrogen, halogen, nitro, amino, hydroxy, C1-C4 lower alkylhydroxy, C1-C4 lower alkylamino, C1-C8 alkyl, C1-C4 lower alkoxy or C1-C4 lower alkylcar
    Type: Application
    Filed: May 16, 2001
    Publication date: August 15, 2002
    Applicant: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Dong-Wook Kang, Jeong-Ho Joo
  • Patent number: 6274732
    Abstract: A process for the preparation of the compound of the formula (I) by reacting a compound of the formula (IV) with a compound of the formula (III).
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: August 14, 2001
    Assignee: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Jae-Eung Lee, Dong-Wook Kang
  • Patent number: 6028195
    Abstract: The present invention relates to novel compound having strong antimumor activities of the general formula(I) ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen, substituted or unsubstituted C.sub.1 -C.sub.8 alkyl, substituted or unsubstituted C.sub.3 -C.sub.6 cycloalkyl, substituted or unsubstituted C.sub.2 -C.sub.8 unsaturated alkyl, ketone, substituted or unsubstituted aryl, substituted or unsubstituted C.sub.1 -C.sub.4 alkoxy, substituted or unsubstituted arylhydroxy, substituted or unsubstituted amino, C.sub.1 -C.sub.4 lower ester, C.sub.1 -C.sub.4 lower thioester, thiol, substituted or unsubstituted carboxyl, epoxy, substituted or unsubstituted C.sub.1 -C.sub.4 lower thioalkoxy; or R.sub.1 and R.sub.2 are fused to form C.sub.3 -C.sub.4 saturated or unsaturated chain; R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 are independently hydrogen, halogen, hydroxy, nitro, C.sub.1 -C.sub.4 lower ester, C.sub.1 -C.sub.4 lower alkyl, C.sub.1 -C.sub.4 lower thioalkyl, substituted or unsubstituted C.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: February 22, 2000
    Assignee: Samjin Pharmaceutical Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Sun-Hwan Lee, Ho-Seok Kwon, Jae-Eung Lee, Dong-Wook Kang, Jeong-Ho Joo, Young-Hee Lee
  • Patent number: 5922727
    Abstract: The present invention relates to novel compound of general formula (I) and pharmaceutically acceptable salts thereof, and process for the preparation of such derivatives and to pharmaceutical compositions containing the same as active ingredients. ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 represents independently hydrogen atom, halogen atom, C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 thioalkyl, C.sub.3 -C.sub.8 optionally substituted cyclicalkyl, unsaturated alkyl, substituted alkyl hydroxyl or aryl hydroxyl, C.sub.1 -C.sub.10 alkylamine, nitro, C.sub.1 -C.sub.4 lower ester, C.sub.1 -C.sub.4 lower alkoxy, C.sub.1 -C.sub.4 lower thioalkoxy; Z represents oxygen atom, sulfur atom, carbon atom and carbonyl group; X represents oxygen atom, sulfur atom; n represents an integer of 1-3; and (sub)cycloalk(en)yl represents ##STR2## in which R.sub.4 and R.sub.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: July 13, 1999
    Assignee: Samjin Pharmaceutical Co., Ltd
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Joong-Young Kim, Sun-Hwan Lee, Ho-Seok Kwon, Jae-Eung Lee, Jeong-Ho Joo, Byung-Chul Kim, Dong-Wook Kang
  • Patent number: 5780472
    Abstract: The present invention relates to novel compound of the general formula(I) and acid addition salt thereof. ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1 -C.sub.8 alkyl or optionally substituted C.sub.3 -C.sub.6 membered cycloalkyl containing C.sub.3 -C.sub.8 ; R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 are independently hydrogen, halogen, hydroxy, nitro, C.sub.1 -C.sub.4 lower ester, C.sub.1 -C.sub.4 lower alkyl, C.sub.1 -C.sub.4 lower alkoxy, aryl, arylalkoxy or unsaturated amine; l is an integer of 0-7; m and n are independently an integer of 0-1; W is carbon or nitrogen; X is oxygen, sulfur, optionally substituted imine; Y is nitrogen or oxygen; and Z is hydrogen, C.sub.1 -C.sub.8 alkoxy, aryloxy, C.sub.1 -C.sub.4 alkylamine, cycloamine containing N.sub.1 -N.sub.5 or oxo group.The present compounds of the above formula (I) has no only strong antimumor activities but lower toxicities, and accordingly are expected as novel antitumor agents.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: July 14, 1998
    Assignee: Samjin Pharmaceuticazl Co., Ltd.
    Inventors: Eui-Hwan Cho, Sun-Gan Chung, Joong-Ypoung Kim, Sun-Hwan Lee, Ho-Seok Kwon, Byung-Chul Kim, Jae-Myeong Kong, Jea-Eung Lee, Dong-Wook Kang