Patents by Inventor Joon-hwan Lee
Joon-hwan 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).
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Patent number: 8541620Abstract: The present invention relates to a method for selectively crystallizing Z isomer of iopromide of formula (I) comprising a) dissolving a crude iopromide comprising a mixture of E and Z isomers or a concentrate thereof in an alcohol, and b) heating the resulting alcohol solution to obtain crystalline of Z isomer of iopromide; and a method for preparing a composition comprising the crystalline Z isomer of iopromide.Type: GrantFiled: October 21, 2009Date of Patent: September 24, 2013Assignee: Daewoong Pharmaceutical Co., Ltd.Inventors: Soo-Jin Choi, Byung-Goo Lee, Han-Kuk Lee, Young-Mook Lim, Wol-Young Kim, Joon-Hwan Lee
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Publication number: 20130231477Abstract: This invention relates to a method of preparing a benzoimidazole derivative at high purity and high yield so as to enable the production of the benzoimidazole derivative compound as an antagonist against a vanilloid reactor-1, and particularly to a method of preparing a benzoimidazole derivative at high purity and high yield, wherein the benzoimidazole derivative is synthesized using a novel intermediate, namely, benzaldehyde, and thereby the preparation process is simple so that it can be applied to production.Type: ApplicationFiled: September 27, 2011Publication date: September 5, 2013Applicant: DAEWOONG PHARMACEUTICAL CO., LTD.Inventors: In Woo Kim, Ji Duck Kim, Hong Chul Yoon, Hee Kyoon Yoon, Byung Goo Lee, Joon Hwan Lee, Young Mook Lim, Soo Jin Choi
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Patent number: 8048551Abstract: Disclosed is a battery safety device having a first metal plate, a second metal plate, and a pressure-sensitive conducting film interposed between both metal plates and adapted to exhibit electrical conductivity when a predetermined pressure or higher is applied. The first and second metal plates are electrically connected to the positive and negative electrodes of the battery, respectively. The safety device connected to a battery prevents the battery from being damaged or at least from igniting or exploding, even when an external impact caused by pressure, a nail, or a nipper or an external pressure is applied to the battery, by conducting the current of the battery to the safety device and discharging the battery before the battery is damaged by the external impact or external pressure.Type: GrantFiled: April 15, 2005Date of Patent: November 1, 2011Assignee: LG Chem, Ltd.Inventors: Jeong Ju Cho, Sung Kyun Chang, Min Chul Jang, Jae Hyun Lee, Joon Hwan Lee, Soo Hyun Ha
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Publication number: 20110245347Abstract: The present invention relates to a method for selectively crystallizing Z isomer of iopromide of formula (I) comprising a) dissolving a crude iopromide comprising a mixture of E and Z isomers or a concentrate thereof in an alcohol, and b) heating the resulting alcohol solution to obtain crystalline of Z isomer of iopromide; and a method for preparing a composition comprising the crystalline Z isomer of iopromide.Type: ApplicationFiled: October 12, 2009Publication date: October 6, 2011Applicant: DAEWOONG PHARMACEUTICAL CO., LTD.Inventors: Soo-Jin Choi, Byung-Goo Lee, Han-Kuk Lee, Young-Mook Lim, Wol-Young Kim, Joon-Hwan Lee
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Patent number: 7785734Abstract: Disclosed is a secondary battery. The secondary battery includes a battery can serving as a positive electrode terminal or a negative electrode terminal of the secondary battery, an electrically conductive substrate provided at an outer portion of the battery can, and a nonconductive film interposed between the battery can and the electrically conductive substrate in order to insulate the electrically conductive substrate from the battery can, wherein the electrically conductive substrate is electrically connected to an electrode terminal having polarity opposite to that of the battery can. Safety of the secondary battery is ensured even if the secondary battery is subject to external parameters, such as penetration of a sharp tool (e.g. a nail or a drill tip), pressing force of a tool (e.g. a nipper), external impact, and exposure to the high temperature.Type: GrantFiled: October 10, 2005Date of Patent: August 31, 2010Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jae Hyun Lee, Joon Hwan Lee, Soo Hyun Ha, Jeong Ju Cho
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Patent number: 7745040Abstract: An object of the present invention is to provide the device for protecting a secondary battery safely from overvoltage and overheating caused by the overcharge by using simple safety device, which provides a contacted safety device which connects between a constant voltage element showing a discharge characteristic in the state of overvoltage and a MIT (metal insulator transition) element showing a discharge characteristic in the state of overheating. Each of the constant voltage element and the MIT element are connected in parallel between a cathode lead and an anode lead of the secondary battery.Type: GrantFiled: August 23, 2005Date of Patent: June 29, 2010Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jae Hyun Lee, Joon Hwan Lee, Soo Hyun Ha, Jeong Ju Cho
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Patent number: 7737661Abstract: Disclosed is a secondary battery having a constant-voltage device for preventing the secondary battery from being excessively overcharged. The breakdown voltage of the constant-voltage device is lower than the explosion or ignition voltage of the secondary battery, so the discharge operation may occur before the secondary battery is exploded or ignited even if the voltage of the secondary battery rises above the overcharge voltage, thereby protecting the secondary battery from explosion or ignition. The leakage current value of the constant-voltage device is less than 0.05% of the capacity value of the secondary battery under the maximum charge voltage of the secondary battery, or the breakdown voltage of the constant-voltage device is higher than the maximum charge voltage of the secondary battery. Thus, the constant-voltage device rarely generates the leakage current even if the secondary battery has been charged with the maximum charge voltage.Type: GrantFiled: August 19, 2005Date of Patent: June 15, 2010Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jeong Ju Cho, Jae Hyun Lee, Joon Hwan Lee, Eui Yong Bang, Soo Hyun Ha
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Patent number: 7629073Abstract: Disclosed are a safety element for a battery, which is provided with material having a Metal-Insulator Transition (MIT) characteristic where resistance abruptly drops at or above a certain temperature, and a battery with such a safety element. This battery with an MIT safety element is turned into a stable discharged state when it is exposed to an elevated temperature or a battery temperature rises due to external impact, so that it can ensure its safety.Type: GrantFiled: May 19, 2005Date of Patent: December 8, 2009Assignee: LG Chem, Ltd.Inventors: Jeong Ju Cho, Jae Hyun Lee, Sung Kyun Chang, Min Chul Jang, Sun Sik Shin, Eui Yong Bang, Joon Hwan Lee, Soo Hyun Ha
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Patent number: 7589501Abstract: The present invention relates to an apparatus for protecting a secondary battery by preventing overcharge of the secondary battery. The apparatus for protecting a secondary battery includes: a secondary battery; a power supply, connected with both electrode terminals of the secondary battery, for providing a charging voltage and a charging current to the secondary battery to charge the secondary battery; and a secondary battery protection unit for shorting the power supply thereby to stop charging the secondary battery if a charging voltage of the secondary battery is above a predetermined voltage.Type: GrantFiled: February 24, 2006Date of Patent: September 15, 2009Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jae Hyun Lee, Joon Hwan Lee, Soo Hyun Ha, Sang Hoon Choy, Jeong Ju Cho
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Patent number: 7158193Abstract: Disclosed is an image misconvergence correction apparatus having a correction value generation unit for calculating a convergence correction value to correct misconvergence occurring when a video signal is scanned on a display device; an amplification unit for performing D-class amplification with respect to the convergence correction value; a convergence yoke mounted in the display device to control a path of electron beams corresponding to the video signal based on the convergence correction value amplified in the amplification unit; and a feedback sensing unit for differentially amplifying a voltage value for electric current passing through the convergence yoke, and feeding back the differentially amplified voltage value to the correction value generation unit.Type: GrantFiled: July 7, 2003Date of Patent: January 2, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-geun Lee, Chung-wook Roh, Joon-hwan Lee
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Patent number: 7129655Abstract: An image distortion correction apparatus is disclosed which can correct misconvergence using a D-class amplifier. The image distortion correction apparatus has an image processor for detecting an image signal and horizontal/vertical synchronous signals from a signal received from an external source; a distortion value calculator for calculating a misconvergence value occurring when the image signal is scanned based on the horizontal/vertical synchronous signals; a correction value calculator for calculating a convergence correction value of a pulse waveform to correct misconvergence of the image signal based on the misconvergence value; an amplifier for performing a D-class amplification with respect to the convergence correction value; and a convergence yoke fixed to a cathode ray tube (CRT) for controlling a path of an electron beam corresponding to the image signal based on the convergence correction value amplified in the amplifier.Type: GrantFiled: April 9, 2003Date of Patent: October 31, 2006Assignee: Samsung Electronics Co., Ltd.Inventor: Joon-hwan Lee
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Patent number: 7053966Abstract: Disclosed is a projection image display apparatus, specified in a convergence adjusting apparatus employing a spline interpolation scheme.Type: GrantFiled: November 5, 2002Date of Patent: May 30, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Joon-hwan Lee, Jae-seung Shim
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Patent number: 6853157Abstract: An image distortion compensating apparatus controls a convergence yoke, and includes a compensation value generator for calculating a convergence compensation value for compensating a convergence distortion which occurs while an image signal is emitted onto a display apparatus, the compensation value generator outputting the convergence compensation value after compensating for a phase and a gain of the convergence yoke; an amplifier for D-class amplifying of the convergence compensation value; and a convergence yoke attached to the display apparatus for controlling a path of electron beams corresponding to the image signal, based on the convergence compensation value as amplified at the amplifier.Type: GrantFiled: July 15, 2003Date of Patent: February 8, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-geun Lee, Chung-wook Roh, Joon-hwan Lee
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Publication number: 20040012348Abstract: An image distortion compensating apparatus controls a convergence yoke, and includes a compensation value generator for calculating a convergence compensation value for compensating a convergence distortion which occurs while an image signal is emitted onto a display apparatus, the compensation value generator outputting the convergence compensation value after compensating for a phase and a gain of the convergence yoke; an amplifier for D-class amplifying of the convergence compensation value; and a convergence yoke attached to the display apparatus for controlling a path of electron beams corresponding to the image signal, based on the convergence compensation value as amplified at the amplifier.Type: ApplicationFiled: July 15, 2003Publication date: January 22, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-Geun Lee, Chung-Wook Roh, Joon-Hwan Lee
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Publication number: 20040008290Abstract: Disclosed is an image misconvergence correction apparatus having a correction value generation unit for calculating a convergence correction value to correct misconvergence occurring when a video signal is scanned on a display device; an amplification unit for performing D-class amplification with respect to the convergence correction value; a convergence yoke mounted in the display device to control a path of electron beams corresponding to the video signal based on the convergence correction value amplified in the amplification unit; and a feedback sensing unit for differentially amplifying a voltage value for electric current passing through the convergence yoke, and feeding back the differentially amplified voltage value to the correction value generation unit.Type: ApplicationFiled: July 7, 2003Publication date: January 15, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-Geun Lee, Chung-Wook Roh, Joon-Hwan Lee
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Publication number: 20030206251Abstract: An image distortion correction apparatus is disclosed which can correct misconvergence using a D-class amplifier. The image distortion correction apparatus has an image processor for detecting an image signal and horizontal/vertical synchronous signals from a signal received from an external source; a distortion value calculator for calculating a misconvergence value occurring when the image signal is scanned based on the horizontal/vertical synchronous signals; a correction value calculator for calculating a convergence correction value of a pulse waveform to correct misconvergence of the image signal based on the misconvergence value; an amplifier for performing a D-class amplification with respect to the convergence correction value; and a convergence yoke fixed to a cathode ray tube (CRT) for controlling a path of an electron beam corresponding to the image signal based on the convergence correction value amplified in the amplifier.Type: ApplicationFiled: April 9, 2003Publication date: November 6, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Joon-Hwan Lee
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Publication number: 20030086025Abstract: Disclosed is a projection image display apparatus, specified in a convergence adjusting apparatus employing a spline interpolation scheme.Type: ApplicationFiled: November 5, 2002Publication date: May 8, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Joon-hwan Lee, Jae-seung Shim
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Patent number: 6432587Abstract: An electrolyte for a lithium secondary battery is prepared by injecting a gas additive having a higher reduction potential than a non-aqueous organic solvent into the non-aqueous organic solvent. The gas additive has a reduction potential ranging from 0.5 to 3.5 V based on the Li+ ions. Examples of gas additives include SO2, CO2, and N2O. In a secondary battery using the electrolyte to which the gas additive is not added, the non-aqueous organic solvent itself reacts with lithium ions at the beginning of the battery charging to form a solid electrolyte interface film and produces gases inside the battery, thereby increasing the internal pressure of the battery. However, in the electrolyte containing the gas additive of the present invention, the gas additive reacts with the lithium ions dissolved in the electrolyte to form a solid electrolyte interface film without producing gases that would increase the internal pressure of the battery.Type: GrantFiled: August 1, 2000Date of Patent: August 13, 2002Assignee: Samsung SDI Co., Ltd.Inventors: Jin-Uk Lee, Joon-Hwan Lee