Patents by Inventor Boram Lee

Boram 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: 20130189075
    Abstract: There is disclosed herein a compressor control apparatus, and a compressor control method. According to the present disclosure, the compressor may be operated in an operation mode in which commercial power applied to the compressor does not pass through an alternating current capacitor when the load is in an overload state, thereby preventing the loss of a drive and effectively reducing the copper and core loss of the compressor. Furthermore, according to the present disclosure, the entire power consumption may be reduced due to the loss reduction of a drive, thereby improving the energy efficiency, and reducing the harmonic components for generating the same stroke even when an alternating current (AC) capacitor is provided therein.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 25, 2013
    Inventors: Gyunam KIM, Sungho PARK, Taewoong NAH, Jaeyoo YOO, Boram LEE
  • Publication number: 20130139536
    Abstract: The present invention relates to an apparatus for controlling a compressor, to a method for controlling a compressor and to a refrigerator comprising same. According to certain embodiments of the present invention, a compressor operates selectively in a TRIAC driving mode or in a mode in which commercial power is directly used in accordance with the quality of the electricity of the commercial power. According to certain embodiments of the present invention, the commercial power is directly applied to the compressor within the range of a predetermined voltage or frequency so as to reduce or remove losses caused by the TRIAC driving, and power consumption is reduced to improve energy efficiency.
    Type: Application
    Filed: July 5, 2011
    Publication date: June 6, 2013
    Inventors: Sangsub Jeong, Jongkwon Kim, Boram Lee
  • Publication number: 20130098089
    Abstract: Disclosed are a compressor control device, a method for controlling a compressor, and a refrigerator including the same. The present invention enables: a compressor to be driven by using a mode selectively to be driven by an inverter and a mode which directly uses a supply voltage, according to the quality of electricity of the supply voltage; loss which is caused by the use of the inverter to be reduced or removed by directly providing the supply voltage to the compressor within a certain voltage or frequency range; and increased energy efficiency by reducing power consumption.
    Type: Application
    Filed: July 5, 2011
    Publication date: April 25, 2013
    Inventors: Sangsub Jeong, Hyuk Lee, Wonsik Oh, Jongkwon Kim, Boram Lee
  • Publication number: 20120301323
    Abstract: An apparatus for controlling a compressor is provided. When grounding the apparatus for controlling a compressor, an analogue circuit ground and a digital circuit ground may be insulated from each other to protect the apparatus. A ground of an analogue circuit driven by commercial alternating current (AC) power, and a ground of a digital circuit driven by a voltage which has been converted from commercial AC power, may also be insulated from each other by a simple circuit device to protect a controller inside the digital circuit.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 29, 2012
    Inventors: Jaeyoo YOO, Boram Lee
  • Publication number: 20120256703
    Abstract: A bandpass filter includes resonator coupling line on which a plurality of composite right/left-handed (CRLH) resonators are disposed. The plurality of CRLH resonators are inductively coupled with each other. The design variables can be increased through inductive coupling in the resonance period. Also, the skirt characteristics and the isolation can be improved.
    Type: Application
    Filed: November 25, 2011
    Publication date: October 11, 2012
    Applicants: IUCF-HYU ( Industry-University Cooperation Foundation Hanyang University, Electronics and Telecommunications Research Institute
    Inventors: Ju Yeon HONG, Jae Ick CHOI, Sungtek KAHNG, Geonho JANG, Boram LEE, Jaehoon CHOI
  • Patent number: 8048973
    Abstract: Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: November 1, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Choong Hoon Lee, Eun Jung Lee, Seungwhan Jung, Boram Lee, Jung A Lee, Bun Yeoul Lee
  • Patent number: 8039671
    Abstract: Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: October 18, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Choong Hoon Lee, Eun Jung Lee, Seungwhan Jung, Boram Lee, Jung A Lee, Bun Yeoul Lee
  • Publication number: 20110160413
    Abstract: Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 30, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Choong Hoon LEE, Eun Jung LEE, Seungwhan JUNG, Boram LEE, Jung A. LEE, Bun Yeoul LEE
  • Publication number: 20110152529
    Abstract: Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 23, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Choong Hoon LEE, Eun Jung LEE, Seungwhan JUNG, Boram LEE, Jung A. Lee, Bun Yeoul LEE
  • Patent number: 7928256
    Abstract: Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: April 19, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Choong Hoon Lee, Eun Jung Lee, Seungwhan Jung, Boram Lee, Jung A. Lee, Bun Yeoul Lee
  • Patent number: 7517940
    Abstract: Provided is catalyst composition including a transition metal complex precatalyst represented by Formula 1; a first cocatalyst represented by Formula 2 which is an alkylaluminum compound; and a second cocatalyst represented by Formula 3 which is a salt compound comprising a Bronsted acid cation and a noncoordinating, compatible anion. Here, R1, R2, R3, R4, E, Q1, Q2 and M are defined in the specification. Al(R6)3??Formula 2 Here, R6 is defined in the specification. [L-H]+[ZA4]???Formula 3 Here, L, [L-H]+, Z and A are defined in the specification. A catalyst composition including binuclear transition metal complexes, an alkylaluminum compound, and a salt compound including a Bronsted acid cation, and a noncoordinating, compatible anion, and a method of preparing the catalyst composition are provided.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: April 14, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Eunjung Lee, Choong Hoon Lee, Seungwhan Jung, Jung A Lee, Boram Lee
  • Publication number: 20070225158
    Abstract: Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 27, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Choong Hoon Lee, Eun Jung Lee, Seungwhan Jung, Boram Lee, Jung A. Lee, Bun Yeoul Lee
  • Publication number: 20070179046
    Abstract: Provided is catalyst composition including a transition metal complex precatalyst represented by Formula 1; a first cocatalyst represented by Formula 2 which is an alkylaluminum compound; and a second cocatalyst represented by Formula 3 which is a salt compound comprising a Bronsted acid cation and a noncoordinating, compatible anion. Here, R1, R2, R3, R4, E, Q1, Q2 and M are defined in the specification. Al(R6)3 Formula 2 Here, R6 is defined in the specification. [L-H]+[ZA4]? Here, L, [L-H]+, Z and A are defined in the specification. A catalyst composition including binuclear transition metal complexes, an alkylaluminum compound, and a salt compound including a Bronsted acid cation, and a noncoordinating, compatible anion, and a method of preparing the catalyst composition are provided. The activity of the catalyst composition has been improved.
    Type: Application
    Filed: February 1, 2007
    Publication date: August 2, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Eunjung LEE, Choong Hoon LEE, Seungwhan JUNG, Jung A LEE, Boram LEE