Patents by Inventor Sun Lee

Sun 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).

  • Voltage adapter circuit for a lithium ion rechargeable battery
    Publication number: 20040251877
    Abstract: The present invention is a circuit that uses only one pair of bi-directional terminals for both charging and discharging a rechargeable battery. When the circuit detects that the battery is in the charging process, it opens an unrestricted current passage and lets the rechargeable battery fully charge. When the circuit detects the battery is in discharging process, if needed, it will induce a voltage drop of 0.7v and reduce the Li-Ion rechargeable battery's output voltage from 4.2v to desired voltage range 3.3˜3.6v. In addition, the circuit provides a feature that prevents the battery from over-charging or over-discharging.
    Type: Application
    Filed: April 14, 2004
    Publication date: December 16, 2004
    Inventor: Il Sun Lee
  • Package and method for bonding between gold lead and gold bump
    Publication number: 20040251546
    Abstract: A chip package including at least one interconnection lead, composed of at least one first metal, at least one bump, a surface of which is plated with at least one second metal with a melting point lower than the first metal, and a eutectic alloy, composed of the at least one first metal and the at least one second metal, that at least electrically connects the interconnection lead and the bump and a method of manufacturing a chip package.
    Type: Application
    Filed: February 17, 2004
    Publication date: December 16, 2004
    Inventors: Si-Hoon Lee, Sa-Yoon Kang, Dong-Han Kim, Yong-Hwan Kwon, Chung-Sun Lee
  • Device to promote blood flow into the myocardium
    Publication number: 20040254518
    Abstract: The present invention relates to medical devices that are designed to promote blood flow from the left ventricle into the myocardium in order to revascularize an ischemic myocardium in the event of left coronary artery occlusion. Such devices are characterized by a design that facilitates blood flow while minimizing clot formation during and after placement. In addition, the device can be easily implanted with minimally invasive surgical techniques.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 16, 2004
    Inventor: Sun Lee
  • Method for fast roaming in a wireless network
    Publication number: 20040242228
    Abstract: A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits proactive keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key. In another embodiment of the present invention, an authentication server transmits proactive keys needed for roaming to neighbor APs to which the STA is likely to move, so that when the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key.
    Type: Application
    Filed: January 8, 2004
    Publication date: December 2, 2004
    Applicants: SAMSUNG ELECTRONICS CO., LTD., The University of Maryland, College Park
    Inventors: In-Sun Lee, Kyung-Hun Jang, Min-Ho Shin, William Albert Arbaugh, Arunesh Mishra
  • Apparatus and method for authentication/copy protection of optical storage medium and the optical storage medium
    Patent number: 6826137
    Abstract: The method of recording data in a copy protected manner on an optical disk modifies at least a first signal in a data such that the modified first signal is reproduced as one of a plurality of target signals prior to error correction decoding. The method also includes error correction encoding the data prior to the modifying such that the reproduced target signals remain unchanged after error correction decoding. And, the modified encoded data is written on an optical storage medium.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: November 30, 2004
    Assignee: LG Electronics Inc.
    Inventors: Jae-Sun Lee, Woon-Sung Yeo, Yong-Hoo Sheen
  • Polymerase chain reaction device and method of regulating opening and closing of inlet and outlet of the polymerase chain reaction device
    Publication number: 20040235154
    Abstract: A polymerase chain reaction (PCR) device with micro-valves, which are opened or closed using a simple control mechanism is provided. The PCR device includes: an inlet through which a biochemical fluid is injected; an outlet through which the biochemical fluid is discharged; a PCR channel positioned between the inlet and the outlet; first and second micro-valves, which control opening and closing of the inlet and the outlet; and a sol-gel transformable material, which transforms from a sol state into a gel state at a temperature lower than DNA denaturation temperature, annealing temperature and extension temperature and higher than room temperature.
    Type: Application
    Filed: February 19, 2004
    Publication date: November 25, 2004
    Inventors: Kwang-wook Oh, Dae-sung Yoon, Young-sun Lee, Sun-hee Kim, Geun-bae Lim, Young-a Kim, Jung-im Han
  • Modified human granulocyte-colony stimulating factor and process for producing same
    Publication number: 20040224393
    Abstract: A modified human granulocyte-colony stimulating factor(hG-CSF) is produced by culturing a microorganism transformed with an expression vector comprising a gene encoding a modified hG-CSF to produce and secrete the modified hG-CSF to periplasm, said modified hG-CSF being obtained by replacing at least one of the 1st, 2nd, 3rd and 17th amino acids of wild-type hG-CSF(SEQ ID NO: 2) with other amino acid
    Type: Application
    Filed: January 9, 2002
    Publication date: November 11, 2004
    Inventors: Se-Chang Kwon, Sung-Youb Jung, Sung-Min Bae, Gwan-Sun Lee
  • GEM OAM frame transmission method in gigabit-capable passive optical network
    Publication number: 20040218534
    Abstract: A GEM OAM frame transmission method used in a Gigabit-capable passive optical network is provided. The method defines an OAM frame structure in a GEM mode of the Gigabit-capable passive optical network and enables an OAM to be achieved even when the GEM mode is operated. The method comprises the steps of: constructing a GEM OAM frame including a GEM header field and a GEM payload field, the GEM header field containing OAM representation information indicating that the GEM OAM frame contains the OAM information, the GEM payload field containing the OAM information; and transmitting the constructed GEM OAM frame in order to enable the ONU/ONT to perform an operation according to the OAM information.
    Type: Application
    Filed: April 5, 2004
    Publication date: November 4, 2004
    Inventors: Jae-Yeon Song, Se-Youn Lim, Jin-Hee Kim, Seo-Won Kwon, Yoon-Sun Lee, Jong-Hwa Lee
  • Method of preparing clarithromycin
    Patent number: 6809188
    Abstract: Clarithromycin can be easily prepared by reacting erythromycin A N-oxide with a methylating agent to obtain 6-O-methylerythromycin A N-oxide; and treating 6-O-methylerythromycin A N-oxide obtained above with a reducing agent in a high yield.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: October 26, 2004
    Assignee: Hanmi Pahrm. Co., Ltd.
    Inventors: Kwee-Hyun Suh, Mi-Ra Seong, Nam-Du Kim, Gwan-Sun Lee
  • GTC frame structure and method for transmission of ONT management control information in GPON
    Publication number: 20040208631
    Abstract: A GTC frame Structure and a method for transmission of ONT management control information in GPON. The method comprises the steps of: constructing a GTC frame which includes a PCBd portion having an OMCC field including either destination identifier information for supporting a GEM mode or destination identifier information for supporting a ATM mode, and a payload portion including data; and transmitting the GTC frame. The GTC frame structure for ONT management control information transmission can transmit the management control information to an ONT supporting either ATM mode or GEM mode.
    Type: Application
    Filed: March 18, 2004
    Publication date: October 21, 2004
    Inventors: Jae-Yeon Song, Se-Youn Lim, Jin-Hee Kim, Seo-Won Kwon, Yoon-Sun Lee, Jong-Hwa Lee
  • Crystalline acid salts of cefdinir and process for preparing cefdinir using same
    Publication number: 20040210049
    Abstract: High purity cefdinir is prepared in a high yield by a process comprising the steps of: treating a cefdinir intermediate with a formic acid-sulfuric acid mixture or a formic acid-methanesulfonic acid mixture to obtain a crystalline salt of cefdinir and reacting the crystalline salt with a base in a solvent.
    Type: Application
    Filed: November 25, 2003
    Publication date: October 21, 2004
    Inventors: Gwan-Sun Lee, Young-Kil Chang, Hong-Sun Kim, Chul-Hyun Park, Gha-Seung Park, Cheol-Kyung Kim
  • GEM frame structure showing payload type of frame and method for processing data thereof
    Publication number: 20040202470
    Abstract: An optical network terminal (ONT) management control protocol of gigabit-capable passive optical network. A gigabit-capable passive optical network encapsulation method (GEM) frame structure that supports delivery of ONT management control information for an optical network unit (ONU) using a GEM and a method for processing data using the GEM frame structure. The GEM frame structure includes in the GEM header a payload type of the GEM header frame, and is used for a gigabit-capable passive optical network (GPON), wherein payload type information, which represents a data type of a payload portion of the GEM frame, is displayed in a header of the GEM frame, in order to provide a GEM control frame which delivers management control information transferred from an OLT (Optical Line Termination).
    Type: Application
    Filed: March 15, 2004
    Publication date: October 14, 2004
    Inventors: Se-Youn Lim, Jong-Hwa Lee, Yoon-Sun Lee, Seo-Won Kwon, Jae-Yeon Song, Jin-Hee Kim
  • Method and apparatus for transmitting data in Gigabit Ethernet passive optical network
    Publication number: 20040196862
    Abstract: A method and apparatus for transmitting data from an optical network unit (ONU) to an optical line termination (OLT) in a Gigabit Ethernet passive optical network (GE-PON) on the basis of a time division multiple access (TDMA) scheme are provided. A measurement of a data transmission time when the data is transmitted to the OLT is obtained, and the measured data transmission time is compared with a predetermined normal transmission time. The transmission of the data is maintained if the measured data transmission time is determined to be less than or equal to the normal transmission time from the comparison result. However, if the measured data transmission time is determined to be greater than the normal transmission time, the transmission of the data is stopped.
    Type: Application
    Filed: January 23, 2004
    Publication date: October 7, 2004
    Inventors: Jae-Yeon Song, Jin-Hee Kim, Se-Youn Lim, Jong-Hwa Lee, Yoon-Sun Lee, Seo-Won Kwon, Jong-Ho Yoon
  • Method of aligning a semiconductor substrate with a semiconductor alignment apparatus
    Publication number: 20040185581
    Abstract: A semiconductor substrate is mounted on a semiconductor alignment apparatus. A chip alignment step is performed to center a central chip on the semiconductor substrate with respect to the semiconductor alignment apparatus, and to store the coordinates thereof. A semiconductor substrate alignment is performed to virtually align the semiconductor substrate with the semiconductor alignment apparatus. At this time, coordinates of a chip adjacent to the central chip and of a number of chips in a peripheral region of the semiconductor substrate are stored in the alignment apparatus. In addition, at least two templates are located in the central chip, and images and coordinates of the templates are stored in the semiconductor alignment apparatus during the semiconductor substrate alignment.
    Type: Application
    Filed: March 22, 2004
    Publication date: September 23, 2004
    Inventors: Sun-Lee Hwang, Sung-Soo Park, Won-Sub Kim
  • Method of treating surface of substrate used in biological reaction system
    Publication number: 20040185480
    Abstract: Provided is a method of treating a surface of a substrate used in a biochemical reaction system, the method including forming a polymer film on the surface by vapor deposition of a compound of formula (1) below and a compound of formula (2) below:
    Type: Application
    Filed: January 27, 2004
    Publication date: September 23, 2004
    Inventors: Sun-hee Kim, Soo-suk Lee, Geun-bae Lim, Young-sun Lee
  • Method for reducing temporal connections among bluetooth devices
    Publication number: 20040180623
    Abstract: A method for wireless communication, and more particularly, a method for reducing the number of temporal connections in Bluetooth devices when obtaining neighboring Bluetooth device names is provided. The method for reducing temporal connections in Bluetooth devices comprises determining whether other Bluetooth devices are present, obtaining a name by temporally connecting to a Bluetooth device whose presence has been determined and determining whether other Bluetooth devices are present after a predetermined time has passed, and then obtaining a changed name through a temporal connection only to other Bluetooth device whose name has been changed. According to the above method, blocking temporal connections to Bluetooth devices whose name has not changed according to changes in the UNDEF field of FHS packets enables a reduction in the frequency of temporal connections.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 16, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-sun Lee, Ki-young Choi
  • Physiologically active polypeptide conjugate having prolonged in vivo half-life
    Publication number: 20040180054
    Abstract: A protein conjugate having a prolonged in vivo half-life of a physiological activity, comprising i) a physiologically active polypeptide, ii) a non-peptidic polymer, and iii) an immunoglobulin, is useful for the development of a polypeptide drug due to the enhanced in vivo stability and prolonged half-life in blood, while reducing the possibility of inducing an immune response.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 16, 2004
    Applicant: Hanmi Pharm. Co., Ltd.
    Inventors: Young-Min Kim, Dae-Jin Kim, Sung-Min Bae, Chang-Ki Lim, Se-Chang Kwon, Gwan-Sun Lee
  • Novel lactobacillus reuteri useful as probiotics
    Publication number: 20040175372
    Abstract: The present invention relates to a Lactobacillus reuteri variant from animal sources that inhibits rotavirus infection and other pathogenic microorganisms, as well as being tolerant of gastric and bile acids. Also, this invention relates to a prophylactic and therapeutic composition comprising the same for contributing in many probiotic ways to the host's general health and preventing and treating diseases or conditions associated with rotavirus and other enteric pathogens.
    Type: Application
    Filed: September 8, 2003
    Publication date: September 9, 2004
    Inventors: Yong-Ha Park, Young-Hyo Chang, In-Sun Lee, Jung-Hoon Yoon, Chul-Joong Kim
  • Expression and secretion vector for human interferon alpha and process for producing human interferon alpha by employing same
    Publication number: 20040151695
    Abstract: Disclosed in this invention are: an expression vector for the secretive production of human interferon alpha (hIFN&agr;) comprising a polynucleotide encoding a modified E. coli thermostable enterotoxin II signal sequence and a polynucleotide encoding hIFN&agr;) ligated to the 3′-end thereof; a microorganism transformed with the expression vector, and a process for secretively producing human interferon by culturing the microorganism, said process being capable of secreting a soluble form of active hIFN&agr;), which does not contain an additional methionine residue at its N-terminal, into the periplasm of an E coli cell.
    Type: Application
    Filed: July 18, 2002
    Publication date: August 5, 2004
    Inventors: Se-Chang Chang Kwon, Sung-Youb Jung, Ki-Doo Choi, Cha-Soon Kim, Sung-Min Bae, Gwan-Sun Lee
  • Cathode structure for color cathode ray tube
    Publication number: 20040140747
    Abstract: The present invention relates to a cathode ray structure for a cathode ray tube, and more particularly, to a cathode structure for a cathode ray tube capable of maximizing thermal efficiency and minimizing power consumption.
    Type: Application
    Filed: November 6, 2003
    Publication date: July 22, 2004
    Inventor: Jae Sun Lee