Patents by Inventor Jeong A Han

Jeong A Han 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: 20230250936
    Abstract: A light diffusing lens having a pointing angle distribution focused toward a lateral direction. The light diffusing lens includes a light entrance part having a concave shape formed inward from a lower part of the optical diffusing lens, a reflection part having a shape which is concave inward from an upper portion of the light diffusing lens and a light exit portion defined by an outer surface of the light diffusing lens. The light entrance part has a first convex surface which is convex in an optical axial direction defined by a straight line passing through the center of the light diffusing lens as the straight line goes toward the inside of the light diffusing lens.
    Type: Application
    Filed: April 17, 2023
    Publication date: August 10, 2023
    Inventors: Jeong A. Han, Eun Ju KIM, Ki Bum NAM
  • Patent number: 11655960
    Abstract: Disclosed is a light diffusing lens having a pointing angle distribution focused toward a lateral direction. The disclosed light diffusing lens includes a light entrance part having a concave shape formed inward from a lower part of the optical diffusing lens, a reflection part having a shape which is concave inward from an upper portion of the light diffusing lens and a light exit portion defined by an outer surface of the light diffusing lens, wherein the light entrance part has a first convex surface which is convex in an optical axial direction defined by a straight line passing through the center of the light diffusing lens as the straight line goes toward the inside of the light diffusing lens.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: May 23, 2023
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jeong A Han, Eun Ju Kim, Ki Bum Nam
  • Publication number: 20200088386
    Abstract: Disclosed is a light diffusing lens having a pointing angle distribution focused toward a lateral direction. The disclosed light diffusing lens includes a light entrance part having a concave shape formed inward from a lower part of the optical diffusing lens, a reflection part having a shape which is concave inward from an upper portion of the light diffusing lens and a light exit portion defined by an outer surface of the light diffusing lens, wherein the light entrance part has a first convex surface which is convex in an optical axial direction defined by a straight line passing through the center of the light diffusing lens as the straight line goes toward the inside of the light diffusing lens.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Jeong A Han, Eun Ju Kim, Ki Bum Nam
  • Patent number: 10094535
    Abstract: Disclosed is a light diffusing lens having a pointing angle distribution focused toward a lateral direction. The disclosed light diffusing lens includes a light entrance portion having a shape which is concave inward from the lower portion of the light diffusing lens, a reflection portion having a shape which is concave inward from the upper portion of the light diffusing lens, and a light exit portion defined by the outer surface of the light diffusing lens. The light entrance portion has a first convex surface which is convex in an optical axial direction defined by a straight line passing through the center of the light diffusing lens as it goes toward the inside of the light diffusing lens.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: October 9, 2018
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jeong A Han, Eun Ju Kim, Ki Bum Nam
  • Patent number: 9574737
    Abstract: An aspherical lens includes a light entrance plane configured to receive light emitted from a light source and a light exit plane configured to radiate the light received by the light entrance plane. The light exit plane includes semispherical convex portions disposed on an upper surface of the aspherical lens, a concavely depressed portion comprising an overlapping region where the semispherical convex portions partially overlap each other at a central axis, a side portion connected with the semispherical convex portions, and an upper surface of each of the semispherical convex portions having a first flat portion.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 21, 2017
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Il Park, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Publication number: 20160252233
    Abstract: Disclosed is a light diffusing lens having a pointing angle distribution focused toward a lateral direction. The disclosed light diffusing lens includes a light entrance part having a concave shape formed inward from a lower part of the optical diffusing lens, a reflection part having a shape which is concave inward from an upper portion of the light diffusing lens and a light exit portion defined by an outer surface of the light diffusing lens, wherein the light entrance part has a first convex surface which is convex in an optical axial direction defined by a straight line passing through the center of the light diffusing lens as the straight line goes toward the inside of the light diffusing lens.
    Type: Application
    Filed: December 31, 2014
    Publication date: September 1, 2016
    Inventors: Jeong A HAN, Eun Ju KIM, Ki Bum NAM
  • Publication number: 20160195238
    Abstract: Disclosed is a light diffusing lens having a pointing angle distribution focused toward a lateral direction. The disclosed light diffusing lens includes a light entrance portion having a shape which is concave inward from the lower portion of the light diffusing lens, a reflection portion having a shape which is concave inward from the upper portion of the light diffusing lens, and a light exit portion defined by the outer surface of the light diffusing lens. The light entrance portion has a first convex surface which is convex in an optical axial direction defined by a straight line passing through the center of the light diffusing lens as it goes toward the inside of the light diffusing lens.
    Type: Application
    Filed: July 17, 2014
    Publication date: July 7, 2016
    Inventors: Jeong A HAN, Eun Ju KIM, Ki Bum NAM
  • Publication number: 20150204510
    Abstract: An aspherical lens includes a light entrance plane configured to receive light emitted from a light source and a light exit plane configured to radiate the light received by the light entrance plane. The light exit plane includes semispherical convex portions disposed on an upper surface of the aspherical lens, a concavely depressed portion comprising an overlapping region where the semispherical convex portions partially overlap each other at a central axis, a side portion connected with the semispherical convex portions, and an upper surface of each of the semispherical convex portions having a first flat portion.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Inventors: Kwang Il PARK, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Patent number: 9022618
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: May 5, 2015
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Il Park, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Publication number: 20140071696
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang PARK, II, Sang Cheol LEE, Jeong A HAN, Woong Jun HWANG, Hee Tak OH
  • Patent number: 8602605
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: December 10, 2013
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Il Park, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Publication number: 20120088839
    Abstract: The present invention relates to a composition for inhibiting cellular senescence, comprising N-[2-(cyclohexyloxyl)-4-nitrophenyl]-methanesulfonamide.
    Type: Application
    Filed: November 29, 2011
    Publication date: April 12, 2012
    Inventors: Sang Chul PARK, Jeong A. HAN
  • Publication number: 20120014115
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Application
    Filed: January 6, 2011
    Publication date: January 19, 2012
    Applicant: SEOUL SEMICONDUCTOR CO., LTD.
    Inventors: Kwang Il PARK, Sang Cheol LEE, Jeong A. HAN, Woong Jun HWANG, Hee Tak OH
  • Publication number: 20100152297
    Abstract: The present invention relates to a composition for inhibiting cellular senescence, comprising N-[2-(cyclohexyloxyl)-4-nitrophenyl]-methanesulfonamide. During the progression of cellular senescence, the expression of COX-2 was decreased, whereas the enzymatic activity of COX-2 was increased, and the cellular senescence regulatory effects of the three selective COX-2 inhibitors had no connection with the concentration of intracellular reactive oxygen species, the activity of NF-?B and the amounts of p53 and p21 proteins. Rather, it was found that the three selective COX-2 inhibitors regulated the expression of caveolin-1 at the transcriptional level and regulated the intracellular total cholesterol concentration, and these results were closely connected with the cellular senescence regulatory effects of the three selective COX-2 inhibitors.
    Type: Application
    Filed: May 14, 2008
    Publication date: June 17, 2010
    Inventors: Sang Chul Park, Jeong A. Han
  • Patent number: D601516
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: October 6, 2009
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jeong A Han, Myung Hee Lee, Jong Beom Choi
  • Patent number: D605610
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: December 8, 2009
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jeong A. Han, Ji Seop So