Patents by Inventor Young-keun Lee

Young-keun 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).

  • FLAT FLUORESCENT LAMP AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20080156040
    Abstract: The present invention provides a flat fluorescent lamp. The flat fluorescent lamp comprises a single plate. Consequently, the flat fluorescent lamp is structurally safe, brightness of the flat fluorescent lamp is high, and efficiency of the flat fluorescent lamp is also high without the provision of other additional optical components. The present invention also provides a method of manufacturing such a flat fluorescent lamp.
    Type: Application
    Filed: March 17, 2008
    Publication date: July 3, 2008
    Inventors: YOUNG JONG LEE, Jun Young Choi, Jun Ho Jeong, Ji-Won Kim, Young-Keun Lee, Young-Kwan Park, Jun-Ho Lee
  • Method of producing microporous high density polyethylene film
    Publication number: 20080139681
    Abstract: Disclosed is a microporous high density polyethylene film for a battery separator and a method of producing the same. The microporous high density polyethylene film includes high density polyethylene with a weight average molecular weight of 2×105?5×105, containing 5 wt % or less molecule with a molecular weight of 1×104 or less. The microporous high density polyethylene film has tensile strengths of 1,100 kg/cm2 or more in transverse and machine directions respectively, a puncture strength of 0.22 N/?m or more, a gas permeability (Darcy's permeability constant) of 1.3×10?5 Darcy or more, and shrinkages of 5% or less in machine and transverse directions, respectively. Particularly, the microporous high density polyethylene film has an excellent extrusion-compoundabiliy and stretchability and a high productivity, and can improve the performances and stability of a battery produced using the same.
    Type: Application
    Filed: February 12, 2008
    Publication date: June 12, 2008
    Inventors: Young Keun Lee, Jang Weon Rhee, Won Young Cho, Jung Moon Sung, Byoung Cheon Jo, Chol Ho Lee, In Hwa Jung, Byung Rae Jung
  • High-speed programmable ROM, memory cell structure therefor, and method for writing data on/reading data from the programmable ROM
    Patent number: 7382640
    Abstract: A high-speed programmable ROM, a memory cell structure therefor, and a method for writing data on/reading data from the programmable ROM are provided.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: June 3, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joong-Eon Lee, Young-keun Lee, Yong-jae Choo, Young-sook Do
  • METHOD FOR MANUFACTURING LIGHT EMITTING DIODE CHIP AND LIGHT EMITTING DIODE LIGHT SOURCE MODULE
    Publication number: 20080102541
    Abstract: The present invention relates to a method for manufacturing a light emitting diode (LED) chip for a chip on board and a method for manufacturing an LED light source module in a chip on board fashion. The method of the present invention includes forming a plurality of LED chips on a wafer, molding a region of each LED chip, cutting the wafer into each LED chip, and testing each LED chip for operating characteristics.
    Type: Application
    Filed: October 26, 2007
    Publication date: May 1, 2008
    Inventors: Eun Jeong Kang, Gi Cherl Kim, Moon Hwan Chang, Eun Chae Jeon, Young Keun Lee
  • BACKLIGHT, BACKLIGHT ASSEMBLY, LIQUID CRYSTAL DISPLAY HAVING THE SAME AND METHOD THEREOF
    Publication number: 20080088769
    Abstract: A backlight, a backlight assembly and a liquid crystal display having the same, the backlight including a substrate with a plurality of wiring provided thereon, a plurality of LED modules disposed on the substrate and at least one color sensor disposed on the substrate. The color sensor includes a color sensor chip mounted on the substrate and a molding portion enclosing the color sensor chip on the substrate.
    Type: Application
    Filed: October 17, 2007
    Publication date: April 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Gi Cherl KIM, Young Keun LEE
  • Precharge circuit and method employing inactive weak precharging and equalizing scheme and memory device including the same
    Patent number: 7359266
    Abstract: Disclosed are a precharge circuit employing an inactive weak precharging and equalizing scheme, a memory device including the same and a precharging method. The inactive weak precharging and equalizing scheme equalizes a non-selected bit line and complementary bit line while sensing and amplifying memory cell data delivered to a selected bit line and complementary bit line to evaluate the voltage difference between the selected bit line and complementary bit line. Then, the scheme precharges the selected bit line and complementary bit line and the non-selected bit line and complementary bit line. This does not require high precharge driving capability for inactivated bit line and complementary bit line equalized to a predetermined voltage level so that precharge current and operating current can be reduced.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: April 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-joong Song, Young-keun Lee
  • Precharge circuit and method employing inactive weak precharging and equalizing scheme and memory device including the same
    Patent number: 7349274
    Abstract: Disclosed are a precharge circuit employing an inactive weak precharging and equalizing scheme, a memory device including the same and a precharging method. The inactive weak precharging and equalizing scheme equalizes a non-selected bit line and complementary bit line while sensing and amplifying memory cell data delivered to a selected bit line and complementary bit line to evaluate the voltage difference between the selected bit line and complementary bit line. Then, the scheme precharges the selected bit line and complementary bit line and the non-selected bit line and complementary bit line. This does not require high precharge driving capability for inactivated bit line and complementary bit line equalized to a predetermined voltage level so that precharge current and operating current can be reduced.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: March 25, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-joong Song, Young-keun Lee
  • Microporous high density polyethylene film
    Patent number: 7332531
    Abstract: Disclosed is a microporous high density polyethylene film for a battery separator and a method of producing the same. The microporous high density polyethylene film includes high density polyethylene with a weight average molecular weight of 2×105-5×105, containing 5 wt % or less molecule with a molecular weight of 1×104 or less. The microporous high density polyethylene film has tensile strengths of 1,100 kg/cm2 or more in transverse and machine directions respectively, a puncture strength of 0.22 N/?m or more, a gas permeability (Darcy's permeability constant) of 1.3×10?5 Darcy or more, and shrinkages of 5% or less in machine and transverse directions, respectively. Particularly, the microporous high density polyethylene film has an excellent extrusion-compoundabiliy and stretchability and a high productivity, and can improve the performances and stability of a battery produced using the same.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: February 19, 2008
    Assignee: SK Corporation
    Inventors: Young Keun Lee, Jang Weon Rhee, Won Young Cho, Jung Moon Sung, Byoung Cheon Jo, Chol Ho Lee, In Hwa Jung, Byung Rae Jung
  • Mobile phone
    Patent number: D559821
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: January 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young Keun Lee
  • Mobile phone
    Patent number: D559826
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: January 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Headset
    Patent number: D559836
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: January 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Mobile phone
    Patent number: D560634
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Mobile phone
    Patent number: D563925
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: March 11, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Portable phone
    Patent number: D566671
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: April 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Portable telephone
    Patent number: D566673
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: April 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Mobile phone
    Patent number: D566675
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: April 15, 2008
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Young-Keun Lee
  • Cellular phone
    Patent number: D568281
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: May 6, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Cellular phone
    Patent number: D573125
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: July 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee
  • Mobile phone
    Patent number: D573566
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: July 22, 2008
    Inventor: Young Keun Lee
  • Cellular phone
    Patent number: D575754
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: August 26, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Keun Lee