Patents by Inventor Sang Han Lee

Sang Han 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).

  • Publication number: 20100084682
    Abstract: There are provided an ohmic electrode, which includes a contact layer made of an Al alloy and formed on a nitride-based semiconductor layer functioning as a light emitting layer, a reflective layer made of Ag metal, formed on the contact layer and having some particles in-diffused to the semiconductor layer, and a protective layer formed on the reflective layer to restrain out-diffusion of the reflective layer; a method of forming the ohmic electrode; and a semiconductor light emitting element having the ohmic electrode. The present invention has strong adhesive strength and low contact resistance since the reflective layer and the light emitting layer directly form an ohmic contact due to the interface reaction during heat treatment, and the present invention has high light reflectance and excellent thermal stability since the contact layer and the protective layer restrain out-diffusion of the reflective layer during heat treatment.
    Type: Application
    Filed: October 11, 2007
    Publication date: April 8, 2010
    Applicant: Postech Academy-Industry Foundation
    Inventors: Jong Lam Lee, Sang Han Lee
  • Patent number: 7652406
    Abstract: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes which are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with the opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies which are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: January 26, 2010
    Assignee: Amotech Co., Ltd.
    Inventors: Pyung Kyu Kim, Kyu Hyuk Jeong, Hyung Geun Song, Sang Han Lee
  • Publication number: 20090113220
    Abstract: An encrypted backup data storage device and a storage system using the same are provided. A backup memory stores at least one of plain-text data and a secret key. A leakage current blocking circuit includes at least one inverter and a complementary metal oxide semiconductor (CMOS) NAND gate circuit and cuts off leakage current paths formed by the lines connected to the battery backup memory.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 30, 2009
    Inventors: Sang Han LEE, Hae Yong YANG, Tae Joo CHANG, Choon Soo KIM
  • Publication number: 20090079286
    Abstract: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes which are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with the opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies which are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
    Type: Application
    Filed: October 7, 2008
    Publication date: March 26, 2009
    Inventors: Pyung Kyu Kim, Kyu Kyuk Jeong, Hyung Geun Song, Sang Han Lee
  • Publication number: 20090041231
    Abstract: Provided are a method and apparatus for partially encrypting speech packets, more specifically, a method and apparatus for selecting partial encryption sets used for a partial encryption technique in which compressed speech packets are partially encrypted to obtain the same effect as a full encryption technique. The method includes the steps of: (a) compressing respective speech files stored in a large-capacity speech database into the speech packets using a speech codec; (b) measuring single-bit loss distortion and sequential-bit loss distortion of the speech packets compressed in step (a); (c) generating standards for selecting partial encryption sets based on the measurement results of the single-bit loss distortion and sequential-bit loss distortion; (d) selecting the partial encryption sets according to the generated standards; and (e) encrypting the speech packets using the selected partial encryption sets.
    Type: Application
    Filed: March 11, 2008
    Publication date: February 12, 2009
    Inventors: Hae Yong YANG, Kyung Hoon LEE, Sang Han LEE
  • Publication number: 20090005440
    Abstract: The present invention relates to a pharmaceutical composition and health food comprising Phellinus sp. PL3 extract or phellinsin A isolated from the same as an effective component. More particularly, the present invention relates to a pharmaceutical composition and health food comprising Phellinus sp. PL3 extract or phellinsin A isolated from the same as an effective component, wherein the Phellinus sp. PL3 extract and its phellinsin A inhibit the oxidation of low density lipoprotein (LDL), and further, they can be used as a component for medicine and food to effectively prevent and treat cardiovascular diseases such as hyperlipemia and arteriosclerosis.
    Type: Application
    Filed: September 5, 2008
    Publication date: January 1, 2009
    Inventors: Sung Uk KIM, Eui Il Hwang, Ju Ryoung Kim, Tae Sook Jeong, Sangku Lee, Sang Han Lee, Jae Sun Moon, Mun-Chual Rho
  • Patent number: 7443074
    Abstract: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes which are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with the opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies which are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 28, 2008
    Assignee: Amotech Co., Ltd.
    Inventors: Pyung Kyu Kim, Kyu Hyuk Jeong, Hyung Geun Song, Sang Han Lee
  • Patent number: 7356906
    Abstract: A method of manufacturing a radial core type double rotor brushless direct-current motor is provided. A double rotor structure is employed with inner and outer rotors which are doubly disposed such that a stator core is completely divided. A rotational shaft is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: April 15, 2008
    Assignee: Amotech Co., Ltd.
    Inventors: Pyung Kyu Kim, Kyu Hyuk Jeong, Hyung Geun Song, Sang Han Lee
  • Publication number: 20070041303
    Abstract: An information storage medium stored hologram data images and an apparatus for reproducing data image from the same are provided. The medium includes a line-type servo image formed on one side of a hologram data image in radial direction. The apparatus includes an information storage medium, the first photodetector, and a signal processor. The first photodetector detects a servo image from the information storage medium and the signal processor generates at least one of a servo control signal and an address signal from a signal detected by the first photodetector.
    Type: Application
    Filed: July 10, 2006
    Publication date: February 22, 2007
    Inventors: Ji-deog Kim, Chung-woo Lee, Chung-choo Chung, Bong-sik Kwak, Sang-han Lee
  • Patent number: 7155946
    Abstract: A mortise lock having a double locking function is provided, which includes: a deadbolt for performing a locking function of a door by going in and out the door; a latchbolt going in and out the door by a handle installed on the door; and a locking member for maintaining the latchbolt in a locked state by keeping the latchbolt projected when the deadbolt is projected, whereby it is possible to improve the security, and reducing breakage and malfunction of the deadbolt due to forced operations of the door, since the door employing the mortise lock cannot be forcedly opened without breaking the latchbolt as well as the deadbolt.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: January 2, 2007
    Assignee: Seoul Commtech Co. Ltd.
    Inventors: Sang-Han Lee, Jin-Sub Shin
  • Publication number: 20060266088
    Abstract: A mortise lock having a double locking function is provided, which includes: a deadbolt for performing a locking function of a door by going in and out the door; a latchbolt going in and out the door by a handle installed on the door; and a locking member for maintaining the latchbolt in a locked state by keeping the latchbolt projected when the deadbolt is projected, whereby it is possible to improve the security, and reducing breakage and malfunction of the deadbolt due to forced operations of the door, since the door employing the mortise lock cannot be forcedly opened without breaking the latchbolt as well as the deadbolt.
    Type: Application
    Filed: October 14, 2005
    Publication date: November 30, 2006
    Inventors: Sang-Han Lee, Jin-Sub Shin
  • Publication number: 20060133236
    Abstract: Provided is a method of controlling tracking of an information recording medium including an area for storing a holographic image and an area for storing servo spots formed discretely and at a predetermined interval, which is achieved by obtaining an RF-SUM signal by adding all of detection signals of a quadrant photodetector for detecting the servo spot, monitoring whether the RF-SUM signal exceeds a predetermined level, and performing tracking control in a section where the RF-SUM signal exceeds the predetermined level. Also provided is a related apparatus.
    Type: Application
    Filed: July 27, 2005
    Publication date: June 22, 2006
    Inventors: Ji-deog Kim, Bong-sik Kwak, Chung-woo Lee, Chung-choo Chung, Sang-han Lee
  • Patent number: 6992419
    Abstract: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes which are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with the opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies which are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: January 31, 2006
    Assignee: Amotech Co., Ltd.
    Inventors: Pyung Kyu Kim, Kyu Hyuk Jeong, Hyung Geun Song, Sang Han Lee
  • Publication number: 20050176584
    Abstract: The present invention relates to a method for high throughput screening of plant growth regulator, more particularly to the method comprising; 1) culturing phytomixotrophic cells and candidates of plant growth regulator which were added in a microwell plate, 2) treating 2,3,5-triphenyltetrazolium chloride thereto, 3) reacting thereof by adding ethanol after removing solutions from microwells, 4) transferring the reacting solution into the new microwell plate, and 5) measuring optical density with a high throughput screening reader. Since the method of the present invention can rapidly and conveniently screen many samples and can also evaluate in vivo activities of plant growth regulators, it can effectively be used as a screening method for plant growth inhibitors and activators.
    Type: Application
    Filed: May 28, 2003
    Publication date: August 11, 2005
    Applicant: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Sang-Soo Kwak, Haeng-Soon Lee, Suk-Yoon Kwon, Chang-Jin Kim, Hyang-Burm Lee, Sang-Han Lee
  • Publication number: 20040245878
    Abstract: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes which are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with the opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies which are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
    Type: Application
    Filed: April 9, 2004
    Publication date: December 9, 2004
    Inventors: Pyung Kyu Kim, Kyu Hyuk Jeong, Hyung Geun Song, Sang Han Lee
  • Patent number: 6332956
    Abstract: Disclosed is a pulp product manufacturing apparatus.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: December 25, 2001
    Assignee: Korea Recystes Co., Ltd.
    Inventors: Sang-Han Lee, Gu-Ik Cha, Young-Tae Kim