Patents by Inventor You Suk Lee

You Suk 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: 11967267
    Abstract: Provided is a display device including a display panel, an optical sensor, a timing controller, a scan driver, a data driver, and an image controller. The timing controller controls an image refresh rate of the display panel based on a refresh rate control signal. Thus, the display device provides improved visibility.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: April 23, 2024
    Assignees: Samsung Display Co., Ltd., UNIST (Ulsan National Institute Of Science and Technology)
    Inventors: Hyo Sun Kim, Oh Sang Kwon, Seong Gyu Choe, Chang Yeong Han, Min Kyung Kim, You Ra Kim, Eun Jung Lee, Hyung Suk Hwang
  • Patent number: 6255317
    Abstract: The present invention provides a cholesterol biosynthesis inhibitor which specifically inhibits the sterol 14-reductase which is involved in the distal pathway of cholesterol biosynthesis, a compound of formula (1) below and the use of an extract or the compound of formula (1) for treating hypercholesterolaemia or hyperlipidaemia. The inhibitor comprises an extract obtained by extracting Corydalis Turtschaninowii Besser with a solvent, or an organic layers obtained by partitioning an extract from Corydalis Turtschaninowii Besser with an organic solvent. The extract contains 7,8,13,13&agr;-tetrahydrocoridaline or its derivative, as the active ingredients, which specifically inhibits the enzyme which is involved in the distal pathway of the cholesterol biosynthesis.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: July 3, 2001
    Assignee: Hanwha Chemical Corporation
    Inventors: Jung Ho Kim, Tae Neung Jhong, Young Ki Paik, Joon Seo Park, Eui Deok Kim, You Suk Lee, Seung Un Kim
  • Patent number: 6239139
    Abstract: The present invention provides a cholesterol biosynthesis inhibitor which specifically inhibits the sterol 14-reductase which is involved in the distal pathway of cholesterol biosynthesis, a compound of formula (1) below and the use of an extract or the compound of formula (1) for treating hypercholesterolaemia or hyperlipidaemia. The inhibitor comprises an extract obtained by extracting Corydalis Turtschaninowii Besser with a solvent, or an organic layers obtained by partitioning an extract from Corydalis Turtschaninowii Besser with an organic solvent. The extract contains 7,8,13,13&agr;-tetrahydrocoridaline or its derivative, as the active ingredients, which specifically inhibits the enzyme which is involved in the distal pathway of the cholesterol biosynthesis.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: May 29, 2001
    Assignee: Hanwha Chemical Corporation
    Inventors: Jung Ho Kim, Tae Neung Jhong, Young Ki Paik, Joon Seo Park, Eui Deok Kim, You Suk Lee, Seung Un Kim
  • Patent number: 6030979
    Abstract: The present invention provides a pharmaceutical composition comprising 5,6-dihydrodibenzo[a,g]quinolizinium derivative and the salts thereof of formula (I) which specifically inhibits the sterol 14-reductase which is involved in the distal pathway of cholesterol biosynthesis, and the use of the compound of formula (I) for treating hypercholesterolaemia or hyperlipidaemia.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: February 29, 2000
    Assignee: Hanwha Corporation
    Inventors: Jung Ho Kim, Tae Neung Jhong, Young Ki Paik, Joon Seo Park, Eui Deok Kim, You Suk Lee, Seung Un Kim
  • Patent number: 6030978
    Abstract: The antifungal formulation comprising the novel compounds of the following chemical formulae (I) and (II) exhibit in vitro antifungal activity against fungi including cutaneous filamentous fungus, such as Epidermophyton, Microsporum, Trichophyton, Sporothrix schenckii, Aspergillus or Candida. The formulation of the present invention exhibit in vitro antifungal activity at the concentration of 1-100 .mu.g/ml. ##STR1## wherein R.sup.1, R.sup.2, and R.sup.4 may be the same or different, and represent C.sub.1 -C.sub.5 alkoxy, R.sup.3 represents hydrogen or C.sub.1 -C.sub.10 alkyl, A.sup.- represents inorganic acid ion, organic acid ion or halide, R.sup.5 represents hydrogen, pyridylmethyl, substituted pyridylmethyl or a group having the following chemical formula(XI) ##STR2## wherein Z.sup.1, Z.sup.2, Z.sup.3, Z.sup.4 and Z.sup.5 may be the same or different and represent hydrogen, halogen, C.sub.1 -C.sub.5 alkyl, trifluoromethyl, phenyl, substituted phenyl, nitro, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: February 29, 2000
    Assignee: Hanwha Corporation
    Inventors: Jung Ho Kim, Tae Neung Jhong, Young Ki Paik, Joon Seo Park, Eui Deok Kim, You Suk Lee, Seung Un Kim
  • Patent number: 6028197
    Abstract: The present invention provides a 5,6-dihydrodibenzo[a,g]quinolizinium derivative and the salts thereof of formula (I) which specifically inhibits the sterol 14-reductase which is involved in the distal pathway of cholesterol biosynthesis, and the use of the compound of formula (I) for treating hypercholesterolaemia or hyperlipidaemia. ##STR1## wherein, R.sup.1 and R.sup.2 which may be the same or different from each other, represent a hydroxy group or an alkoxy group having 1 to 4 carbons or R.sup.1 and R.sup.2 together represent a methylenedioxy group;R.sup.3 represents a hydroxy group or an alkoxy group having 1 to 4 carbons;R.sup.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: February 22, 2000
    Assignee: Hanwha Corporation
    Inventors: Jung Ho Kim, Tae Neung Jhong, Young Ki Paik, Joon Seo Park, Eui Deok Kim, You Suk Lee, Seung Un Kim
  • Patent number: 6008356
    Abstract: The novel compounds of the following chemical formulae (I) and (II) exhibit in vitro antifungal activity against fungi including cutaneous filamentous fungus, such as Epidermophyton, Microsporum, Trichophyton, Sporothrix schenckii, Aspergillus or Candida. The compounds of the present invention exhibit in vitro antifungal activity at the concentration of 1-100 .mu.g/ml. ##STR1## wherein R.sup.1, R.sup.2, and R.sup.4 may be the same or different, and represent C.sub.1 -C.sub.5 alkoxy, R.sup.3 represents hydrogen or C.sub.1 -C.sub.10 alkyl, A.sup.- represents inorganic acid ion, organic acid ion or halide, R.sup.5 represents hydrogen, pyridylmethyl, substituted pyridylmethyl or a group having the following chemical formula(XI) ##STR2## wherein Z.sup.1, Z.sup.2, Z.sup.3, Z.sup.4 and Z.sup.5 may be the same or different and represent hydrogen, halogen, C.sub.1 -C.sub.5 alkyl, trifluoromethyl, phenyl, substituted phenyl, nitro, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylamino, acetylamino, C.sub.1 -C.sub.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: December 28, 1999
    Assignee: Hanwha Corporation
    Inventors: Jung Ho Kim, Tae Neung Jhong, Young Ki Paik, Joon Seo Park, Eui Deok Kim, You Suk Lee, Seung Un Kim