Patents by Inventor Jae Chul Lee

Jae Chul 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).

  • Patent number: 7888511
    Abstract: Optically pure esomeprazole and its salt can be simply prepared by dissolving (S)-(?)-binol, a weak base and the racemic form of omeprazole in a mixture of a water-compatible organic solvent and water at a high temperature, cooling the mixed solution to crystallize the inclusion complex of esomeprazole and (S)-(?)-binol, and removing the (S)-(?)-binol moiety from the crystallized inclusion complex.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: February 15, 2011
    Assignee: Hanmi Holdings Co., Ltd.
    Inventors: Tae Hee Ha, Won Jeong Kim, Hee Sook Oh, Chang Hee Park, Jae Chul Lee, Han Kyong Kim, Kwee-Hyun Suh
  • Patent number: 7864192
    Abstract: A dithering system includes a linear transformer, a dither data generator, an adder and a shifter. The transformer linearly transforms M bit input data using a linear function having a predetermined gradient in order to generate and output M bit transform data. The dither data generator generates and outputs M?N bit dither data. The adder adds the M bit transform data and the M?N bit dither data to generate and output M bit correction data. The shifter cuts off the bottom M?N bits of the M bit correction data in order to generate and output the N bit output data. The dithering system and associated dithering method widely disperses an error generated due to a physical limit of a data bit that can be expressed by a low gray scale system throughout the entirety of the gray scales when high gray scale image data is converted to low gray scale image data. This is done without using a lookup table which avoids using valuable chip area.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: January 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-min Kim, Jae-chul Lee, Jong-seon Kim
  • Publication number: 20100283414
    Abstract: A motor, and a method and apparatus for controlling the motor for a washer are provided. The motor includes a stator on which a plurality of coils are wound and disposed in a circular shape, a rotor having a plurality of permanent magnets spaced apart from the coils by a predetermined distance, and a motor controller performing a vector control method for controlling a current vector applied on a d-q axis rotating coordinate system in a start mode of the rotor to make a current speed of the rotor follow a reference speed of the rotor by comparing the current speed with the reference speed. The motor controller includes a speed/position detector for detecting the current speed and a current position of the rotor using an on/off signal of a hall sensor installed on the stator.
    Type: Application
    Filed: September 24, 2008
    Publication date: November 11, 2010
    Applicant: LG ELECTRONICS INC.
    Inventors: Cha-Seung Jun, Byoung-Wook Min, Dong-Cheol Lee, Jae-Chul Lee
  • Publication number: 20100264860
    Abstract: A motor, and a method and apparatus for controlling the motor for a washer are provided. The motor includes a stator on which a plurality of coils are wound and disposed in a circular shape, a rotor having a plurality of permanent magnets spaced apart from the coils by a predetermined distance, and a motor controller performing a vector control method for controlling a current vector applied on a d-q axis rotating coordinate system in a start mode of the rotor to make a current speed of the rotor follow a reference speed of the rotor by comparing the current speed with the reference speed. The motor controller includes a speed/position detector for detecting the current speed and a current position of the rotor using an on/off signal of a hall sensor installed on the stator.
    Type: Application
    Filed: September 24, 2008
    Publication date: October 21, 2010
    Applicant: LG ELECTRONICS INC.
    Inventors: Cha-Seung Jun, Byoung-Wook Min, Dong-Cheol Lee, Jae-Chul Lee
  • Patent number: 7799907
    Abstract: Provided is an improved method for stereoselectively preparing 2?-deoxy-2?,2?-difluorocytidine of formula (I), which includes reacting a 1-halo ribofuranose compound with a nucleobase of formula (IV) in a solvent to obtain a nucleo side of formula (II) with removal of a silyl halide ((alkyl)3SiX (X=halide)); and deprotecting the nucleoside of formula (II) to obtain 2?-deoxy-2?,2?-difluorocytidine of formula (I). 2?-Deoxy-2?,2?-difluorocytidine of formula (I) is effective for treating various cancers such as non-small cell lung (NSCLC), pancreatic, bladder, breast or ovarian cancers.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: September 21, 2010
    Assignee: Hanmi Pharm. Co., Ltd
    Inventors: Jaeheon Lee, Gha Seung Park, Moonsub Lee, Hyo-Jeong Bang, Jae Chul Lee, Cheol Kyong Kim, Chang-Ju Choi, Han Kyong Kim, Hoe Chul Lee, Young-Kil Chang, Gwan Sun Lee
  • Publication number: 20100175199
    Abstract: A washing machine and associated washing method are provided. The method may include rotating a drum, measuring and storing a vibration level of a cabinet while increasing a rotational speed of the drum, and measuring the vibration level of the cabinet after the rotational speed of the drum reaches a target rotational speed and determining whether or not the vibration level of the cabinet is greater than a set value. The method may then include adjusting the rotational speed of the drum if the vibration level is greater than the set value so as to minimize vibration and resonance in a support surface on which the washing machine is positioned.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 15, 2010
    Inventors: Deok Kyu Kim, Kyung Seop Hong, Bon Kwon Koo, Jae Chul Lee
  • Publication number: 20100126307
    Abstract: There is provided a multi-turn hydraulic actuator used to open/close a passageway in ground and sea industries including general industrial machines, oil refineries and chemical plants and power generating plants, among others, and more particularly, a multi-turn hydraulic actuator comprising: a hydraulic motor and a decelerator, among others, whereby high torque is efficiently obtained by using low electric power, compared to a conventional electric actuator, and whereby an operation part and a drive part are freely attached to/detached from at a user's necessity.
    Type: Application
    Filed: September 1, 2009
    Publication date: May 27, 2010
    Inventors: Byoung Hoo Rho, Hee Goo Sim, Mun Su Bok, Jae Chul Lee, Po Young Kim
  • Publication number: 20100085659
    Abstract: An information storage device includes a magnetic track and a pinning element for pinning the magnetic domain wall. The magnetic track includes a plurality of magnetic domains and a magnetic domain wall arranged between each pair of adjacent magnetic domains. The pinning element is configured to apply a magnetic field to pin the magnetic domain wall to the magnetic track. The magnetic field may have the same magnetization direction as the magnetic domain wall.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 8, 2010
    Inventors: Sug-bong Choe, Kyoung-Woong Moon, Jae-chul Lee
  • Publication number: 20100036708
    Abstract: An apparatus and method for schedule setting in a portable communication system are provided. The apparatus includes an event manager for performing a process to set a schedule by appointing a duration of a day intended to perform schedule setting by a touch, or a process to set a schedule by a touch input defining a predefined menu input for the schedule setting.
    Type: Application
    Filed: June 15, 2009
    Publication date: February 11, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-Chul Lee, Won-Gi Lee
  • Publication number: 20090326234
    Abstract: Disclosed is (S)-(?)-amlodipine camsylate or a hydrate thereof having good photostability and high solubility, and a pharmaceutical composition comprising same, which can be efficiently used in treating cardiovascular diseases.
    Type: Application
    Filed: July 16, 2007
    Publication date: December 31, 2009
    Applicant: Hanmi Pharm Co., Ltd.
    Inventors: Jaeheon Lee, Moon Sub Lee, Weon Ki Yang, Jaeho Yoo, Jae-Chul Lee, Chang-Ju Choi, Han Kyong Kim, Young-Kil Chang, Gwansun Lee
  • Publication number: 20090322359
    Abstract: Disclosed is a device for sensing the opening degree of a valve, which can easily determine the upper and lower limits without using upper and lower limit switches so that, besides simplifying the mechanical structure, the device can be easily installed, maintained, and repaired. The device can avoid basic errors and improve the opening degree sensing performance without using upper and lower limit switches, cams, and a spline so that, by simplifying the mechanical structure, the device can be manufactured, installed, maintained, and repaired at a low cost, and its long-term durability is improved. The device has a main gear adapted to disengage from the meter gear when the main gear is rotated excessively so that any damage to the meter gear and potentiometer, which may occur during installation or use, is prevented.
    Type: Application
    Filed: July 24, 2008
    Publication date: December 31, 2009
    Applicant: RPM TECH CO., LTD.
    Inventors: Byoung-Hoo Rho, Mun-Su Bok, Ki-Jong Jin, Jae-Chul Lee, Jung-hwan Lim
  • Patent number: 7638642
    Abstract: 3R-carboxylate enantiomer derivative of formula (III) can be prepared easily and selectively by the method of the present invention, and a highly pure D-erythro-2,2-difluoro-2-deoxy-1-oxoribose derivative can be prepared efficiently from the compound of formula (III) as an intermediate.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: December 29, 2009
    Assignee: Hanmi Pharm, Co., Ltd
    Inventors: Jaeheon Lee, Gha-Seung Park, Moonsub Lee, Cheol-Kyong Kim, Jae-Chul Lee, Young-Kil Chang, Gwan-Sun Lee
  • Patent number: 7591916
    Abstract: In Cu-based bulk amorphous matrix composite materials, comprising a Cu-based amorphous alloy containing high fusion point element(s) selected from a group of Ta, W or combination thereof, wherein the high fusion point element(s) has(have) a shape of crystalline grain and is(are) dispersed around a Cu-based amorphous matrix. Cu-based bulk amorphous matrix composite materials have the composition expressed as the following Chemical formula 1; CuaZrbTicRd??[Chemical formula 1] where R is Ta, W or combination thereof, a, b, c and d are atomic weight ratio, a+b+c+d equals 100, a, b, c, and d have the range of 45?a?65, 10?b?35, 5?c?30, and 5?d?10, respectively.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: September 22, 2009
    Assignee: Korea Institute of Science & Technology
    Inventors: Yu Chan Kim, Jae Chul Lee, Do Hyang Kim, Eric Fleury
  • Publication number: 20090214772
    Abstract: An apparatus and method for coating a powder material on a substrate is disclosed, to enable various materials such as metal or ceramic powder to be coated on a substrate made of a material having low heat-resistance, the method including supplying a predetermined powder; carrying the supplied powder to a predetermined spraying nozzle by injecting a gas at a room temperature; and spraying the powder carried under conditions of the room temperature and vacuum state on the substrate through spraying nozzle, wherein the grain size of predetermined powder is in a range between about 0.1 to about 10 ?m, and the powder is sprayed on the substrate at a velocity of about 500 to about 1200 m/sec.
    Type: Application
    Filed: February 27, 2008
    Publication date: August 27, 2009
    Applicant: SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATION
    Inventors: Sung Hoon Ahn, Doo Man Chun, Min Hyeng Kim, Jae Chul Lee
  • Publication number: 20090128584
    Abstract: A sub-pixel data conversion apparatus may include: a gamma correction block that converts input sub-pixel data to first sub-pixel data; and a dithering process block that generates a first dithering mask pattern and that performs a first dithering operation on the first sub-pixel data to a second sub-pixel data based on the generated first dithering mask pattern. A sub-pixel data gamma correction method may include setting error data for gamma correction on sub-pixel data and extracting error data corresponding to input sub-pixel data, adding the extracted error data and the input sub-pixel data, and converting the input sub-pixel data to first sub-pixel data based on a result of the addition. A sub-pixel data dithering method may include: generating a first dithering mask pattern and performing a first dithering operation; and generating a second dithering mask pattern and performing a second dithering operation.
    Type: Application
    Filed: September 26, 2008
    Publication date: May 21, 2009
    Inventors: Jae Chul Lee, Keun-Ho Ryu, Jong Seon Kim
  • Publication number: 20080224976
    Abstract: A method of temporally and/or spatially randomly dithering, to facilitate converting an input M-bit subpixel signal into an (M?N)-bit subpixel signal, may include spatially and/or temporally randomly generating a dithering mask pattern satisfying a condition that a spatial mean and/or a temporal mean of an image signal before dithering matches a spatial mean and/or a temporal mean of the image signal after dithering, respectively, and converting the M-bit subpixel signal into the (M?N)-bit subpixel signal using the dithering mask pattern.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 18, 2008
    Inventors: Jae-chul Lee, Jong-seon Kim, Young-min Choi, Keun-ho Ryu
  • Publication number: 20080225054
    Abstract: A dithering system includes a linear transformer, a dither data generator, an adder and a shifter. The transformer linearly transforms M bit input data using a linear function having a predetermined gradient in order to generate and output M bit transform data. The dither data generator generates and outputs M?N bit dither data. The adder adds the M bit transform data and the M?N bit dither data to generate and output M bit correction data. The shifter cuts off the bottom M?N bits of the M bit correction data in order to generate and output the N bit output data. The dithering system and associated dithering method widely disperses an error generated due to a physical limit of a data bit that can be expressed by a low gray scale system throughout the entirety of the gray scales when high gray scale image data is converted to low gray scale image data. This is done without using a lookup table which avoids using valuable chip area.
    Type: Application
    Filed: November 28, 2007
    Publication date: September 18, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-min KIM, Jae-chul LEE, Jong-seon KIM
  • Publication number: 20080224983
    Abstract: A method and apparatus of compensating for a kick-back voltage to reduce the generation of flicker in a liquid crystal display (LCD). The method of compensating for a kick-back voltage includes correcting input pixel data using a kick-back correction function that meets a condition on which a response characteristic of a voltage detected from a pixel electrode of a liquid crystal cell for a positive input pixel signal and a response characteristic of a voltage detected from the pixel electrode of the liquid crystal cell for a negative input pixel signal become symmetrical without causing a saturation state on a basis of a kick-back voltage measured from an LCD panel to generate corrected pixel data, and driving the LCD panel using the corrected pixel data.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 18, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-chul LEE, Jong-seon Kim
  • Publication number: 20080204444
    Abstract: A timing controller to reduce a flicker in a display device is provided. The timing controller includes a line pattern detector and a frame pattern detector. The line pattern detector divides received data into a plurality of unit blocks and detects a line polarity of each of a plurality of horizontal lines included in each of the unit blocks. The frame pattern detector generates a polarity control signal to control a data inversion method based on a frame image pattern detected based on line polarities of the respective horizontal lines.
    Type: Application
    Filed: August 2, 2007
    Publication date: August 28, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Keun-Ho Ryu, Young Min Choi, Jong Seon Kim, Jae Chul Lee
  • Publication number: 20080194828
    Abstract: Optically pure esomeprazole and its salt can be simply prepared by dissolving (S)-(?)-binol, a weak base and the racemic form of omeprazole in a mixture of a water-compatible organic solvent and water at a high temperature, cooling the mixed solution to crystallize the inclusion complex of esomeprazole and (S)-(?)-binol, and removing the (S)-(?)-binol moiety from the crystallized inclusion complex.
    Type: Application
    Filed: July 11, 2006
    Publication date: August 14, 2008
    Inventors: Tae Hee Ha, Won Jeong Kim, Hee Sook Oh, Chang Hee Park, Jae Chul Lee, Han Kyong Kim, Kwee-Hyun Suh