Patents by Inventor Ki-Hwan Hwang

Ki-Hwan Hwang 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: 20240099360
    Abstract: A smoking article according to an example embodiment include a medium receiver filled with a plurality of medium granules, a humectant receiver located on one side of the medium receiver and configured to generate an aerosol, and a filter located on the other side of the medium receiver. The plurality of medium granules are 0.25 mm or more in diameter.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 28, 2024
    Applicant: KT&G CORPORATION
    Inventors: Hyeon Tae KIM, Sun Hwan JUNG, Min Hee HWANG, Ki Jin AHN
  • Patent number: 11926558
    Abstract: The present specification relates to a conductive structure body, a method for manufacturing the same, and an electrode and an electronic device including the conductive structure body.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: March 12, 2024
    Assignee: LG CHEM LTD.
    Inventors: Ilha Lee, Seung Heon Lee, Song Ho Jang, Dong Hyun Oh, Ji Young Hwang, Ki-Hwan Kim, Han Min Seo, Chan Hyoung Park, Sun Young Park
  • Publication number: 20190159450
    Abstract: A pyridine-based compound containing an isoxazoline ring represented by Formula 1 or an agrochemically acceptable salt thereof can be used as a herbicide. A method of preparing the pyridine-based compound containing an isoxazoline ring represented by Formula 1 includes reacting a compound represented by Formula 2 with a compound represented by Formula 3.
    Type: Application
    Filed: June 27, 2017
    Publication date: May 30, 2019
    Inventors: Young Kwan KO, Eun Ae KIM, Ill Young LEE, Dong Wan KOO, Jae Wook RYU, Gyu Hwan YON, Hyun Suk YEOM, Hee Nam LIM, So-Young LEE, Chan Yong PARK, Mi-Young KWAK, Suk-Jin KOO, Ki-Hwan HWANG, Sung-Hun KIM, Jong-Su LIM, Dong-Guk LEE, Kun-Hoe CHUNG, Nam-Gyu CHO, Jun-Ho NAM
  • Patent number: 9439432
    Abstract: Provided are an ortho-substituted phenylisoxazoline-based compound with 2,6-difluorobenzyloxymethyl represented by Formula 1, or a racemate or enantiomer thereof, a herbicide including the ortho-substituted phenylisoxazoline-based compound, or the racemate or enantiomer thereof as an active ingredient, and a method of selectively controlling grass weed comprising treating with the ortho-substituted phenylisoxazoline-based compound, or the racemate or enantiomer thereof before or after the grass weed emerges.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: September 13, 2016
    Assignees: MOGHU RESEARCH CENTER LTD, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Young Kwan Ko, Gyu Hwan Yon, Jae Wook Ryu, Dong Wan Koo, Jun Ho Nam, Sung Wan Pyo, Jae Min Hwang, Suk Jin Koo, Ki Hwan Hwang, Dong Guk Lee, Man Seok Jeon, Nam Gyu Cho, Sung Hun Kim, Jong Su Lim, Kun Hoe Chung
  • Patent number: 9303022
    Abstract: Provided is an industrial method for the preparation of [5-{(2,6-difluorobenzyloxy)methyl}-4,5-dihydro-5-methyl-3-(3-methylthiophene-2-yl)-isoxazole](common name: methiozolin) represented by Formula 1 that is a herbicidal substance in high-purity.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 5, 2016
    Assignees: MOGHU RESEARCH CENTER LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Young Kwan Ko, Dong Wan Koo, Jae Chun Woo, Jae Wook Ryu, Suk Jin Koo, Ki Hwan Hwang, Dong Guk Lee, Kun Hoe Chung, Man Seok Jeon, Sung Hun Kim, Jong Su Lim, Nam Gyu Cho
  • Publication number: 20150158852
    Abstract: Provided is an industrial method for the preparation of [5-{(2,6-difluorobenzyloxy)methyl}-4,5-dihydro-5-methyl-3-(3-methylthiophene-2-yl)-isoxazole](common name: methiozolin) represented by Formula 1 that is a herbicidal substance in high-purity.
    Type: Application
    Filed: March 18, 2013
    Publication date: June 11, 2015
    Inventors: Young Kwan Ko, Dong Wan Koo, Jae Chun Woo, Jae Wook Ryu, Suk Jin Koo, Ki Hwan Hwang, Dong Guk Lee, Kun Hoe Chung, Man Seok Jeon, Sung Hun Kim, Jong Su Lim, Nam Gyu Cho
  • Publication number: 20140256553
    Abstract: Provided are an ortho-substituted phenylisoxazoline-based compound with 2,6-difluorobenzyloxymethyl represented by Formula 1, or a racemate or enantiomer thereof, a herbicide including the ortho-substituted phenylisoxazoline-based compound, or the racemate or enantiomer thereof as an active ingredient, and a method of selectively controlling grass weed comprising treating with the ortho-substituted phenylisoxazoline-based compound, or the racemate or enantiomer thereof before or after the grass weed emerges.
    Type: Application
    Filed: May 18, 2012
    Publication date: September 11, 2014
    Applicants: MOGHU RESEARCH CENTER LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Young Kwan Ko, Gyu Hwan Yon, Jae Wook Ryu, Dong Wan Koo, Jun Ho Nam, Sung Wan Pyo, Jae Min Hwang, Suk Jin Koo, Ki Hwan Hwang, Dong Guk Lee, Man Seok Jeon, Nam Gyu Cho, Sung Hun Kim, Jong Su Lim, Kun Hoe Chung
  • Patent number: 8445409
    Abstract: A method of selectively controlling annual bluegrass and/or goosegrass in turf grass, the method includes applying 5-benzyloxymethyl-1,2-isoxazoline derivative compounds, pre-emergence or post-emergence, to goosegrass and/or annual bluegrass in turf grass.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: May 21, 2013
    Assignee: Moghu Research Center Ltd.
    Inventors: Suk-Jin Koo, Ki-Hwan Hwang
  • Patent number: 8284687
    Abstract: An apparatus and method for rate control in a wireless communication system are provided. The apparatus includes a preprocessor, a rate controller, a determiner, and a transmitter. The preprocessor determines feedback information on a physical layer packet using a feedback message of MAC ARQ. The rate controller updates a CQI reported from a receiver using the determined feedback information. The determiner determines an MCS using the updated CQI. The transmitter transmits data using the determined MCS.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: October 9, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Hwan Hwang, Sung-Kwon Jo, Jae-Hyok Lee, Myong-Hee Park
  • Patent number: 8280320
    Abstract: An apparatus and a method for simultaneously supporting Multiple-Input Multiple-Output (MIMO) and beamforming in a wireless communication system are provided. In the method, two data streams are mapped to each of all of 2N transmission antennas; the two data streams are multiplied by different Cyclic Delay Diversity (CDD) phase sequences; the two data streams multiplied by the different CDD phase sequences for each transmission antenna are added; and the added data stream is multiplied by a beamforming coefficient and transmitted for each transmission antenna.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ki-Hwan Hwang, Myung-Kwang Byun, Sung-Kwon Jo
  • Publication number: 20110306496
    Abstract: A method of selectively controlling annual bluegrass and/or goosegrass in turf grass, the method includes applying 5-benzyloxymethyl-1,2-isoxazoline derivative compounds, pre-emergence or post-emergence, to goosegrass and/or annual bluegrass in turf grass.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 15, 2011
    Applicant: MOGHU RESEARCH CENTER LTD.
    Inventors: Suk-Jin KOO, Ki-Hwan HWANG
  • Patent number: 7998902
    Abstract: The present invention relates to a turf herbicide comprising, as an active ingredient, of 5-benzyloxymethyl-1,2-isoxazoline derivatives of formula (I), which have been known as an a rice paddy herbicide. In addition, 5-benzyloxymethyl-1,2-isoxazoline derivatives of the present invention have a high activity not only as a turf herbicide but also as a herbicide for upland crops and direct-seeded rice. As such, the derivatives of the present invention can be used either as an upland herbicide or as a herbicide for direct-seeded paddy field rice.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: August 16, 2011
    Assignee: Moghu Research Center Ltd.
    Inventors: Suk-Jin Koo, Ki-Hwan Hwang
  • Patent number: 7957499
    Abstract: Provided is an apparatus and method for compensating a timing offset in a broadband wireless communication system. A receiving apparatus for the timing offset compensation includes a selector, a first calculator, and a second calculator. The selector groups two or more adjacent tiles into one or more tile groups and selects one or more pilot pairs, each including adjacent pilot signals, from each tile group. The first calculator calculates an average phase difference between the pilot pairs. The second calculator calculates a timing offset using the average phase difference.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: June 7, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Hwan Hwang, Kyun-Byoung Ko, Ji-Ho Jang, Sung-Kwon Jo, Jae-Hyok Lee
  • Publication number: 20100210227
    Abstract: An apparatus and a method for simultaneously supporting Multiple-Input Multiple-Output (MIMO) and beamforming in a wireless communication system are provided. In the method, two data streams are mapped to each of all of 2N transmission antennas; the two data streams are multiplied by different Cyclic Delay Diversity (CDD) phase sequences; the two data streams multiplied by the different CDD phase sequences for each transmission antenna are added; and the added data stream is multiplied by a beamforming coefficient and transmitted for each transmission antenna.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 19, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-Hwan HWANG, Myung-Kwang Byun, Sung-Kwon Jo
  • Publication number: 20100182951
    Abstract: A method for rate control in a wireless communication system includes feedback information indicating whether a packet is received, is received from a receiver. A channel state value measured by the receiver is received. It is determined whether the same feedback information is received from the receiver successively more than a predetermined frequency. A target error rate is controlled if the same feedback information is received successively more than the predetermined frequency.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 22, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Myong-Hee Park, Sung-Kwon Jo, Jae-Hyok Lee, Ki-Hwan Hwang
  • Publication number: 20100035755
    Abstract: The present invention relates to a method of controlling weeds in a turf grass using a sulfonylurea compound. More specifically, the present invention relates to a turf grass herbicide which comprises as an effective component a benzene sulfonylurea derivative compound that is represented by the Formula (I), or a thiophene sulfonylurea derivative compound that is represented by the Formula (II), and a method of controlling selectively poaceae, cyperaceae and broadleaf weeds by using the sulfonylurea compounds.
    Type: Application
    Filed: August 4, 2009
    Publication date: February 11, 2010
    Applicant: Moghu Research Center Ltd.
    Inventors: Suk-Jin Koo, Ki-Hwan Hwang, Man-Seok Jeon, Sung-Heon Kim
  • Patent number: 7561636
    Abstract: A digital predistortion apparatus is provided for predistorting a nonlinear characteristic caused by a wideband power amplifier that amplifies a input signal. The digital predistortion apparatus includes a predistorter, connected to the power amplifier via a digital-to-analog converter (DAC) and a frequency up-converter, for receiving the input signal and compensating for the nonlinear characteristic using a look-up table that depends upon a change in output power of the power amplifier. The digital predistortion apparatus further includes look-up table (LUT) updating block for adaptively updating the look-up table by comparing a feedback signal output from the power amplifier, connected thereto via an analog-to-digital converter (ADC), with the input signal output from the predistorter.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: July 14, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoo-Seung Song, Jae-Hyok Lee, Seung-Hwan Lee, Ki-Hwan Hwang, Jae-Ho Jeon, Seung-Joo Maeng
  • Publication number: 20090141673
    Abstract: An apparatus and method for rate control in a wireless communication system are provided. The apparatus includes a preprocessor, a rate controller, a determiner, and a transmitter. The preprocessor determines feedback information on a physical layer packet using a feedback message of MAC ARQ. The rate controller updates a CQI reported from a receiver using the determined feedback information. The determiner determines an MCS using the updated CQI. The transmitter transmits data using the determined MCS.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 4, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-Hwan Hwang, Sung-Kwon Jo, Jae-Hyok Lee, Myong-Hee Park
  • Publication number: 20080318784
    Abstract: The present invention relates to a turf herbicide comprising, as an active ingredient, of 5-benzyloxymethyl-1,2-isoxazoline derivatives of formula (I), which have been known as an a rice paddy herbicide. In addition, 5-benzyloxymethyl-1,2-isoxazoline derivatives of the present invention have a high activity not only as a turf herbicide but also as a herbicide for upland crops and direct-seeded rice. As such, the derivatives of the present invention can be used either as an upland herbicide or as a herbicide for direct-seeded paddy field rice.
    Type: Application
    Filed: May 16, 2008
    Publication date: December 25, 2008
    Applicant: MOGHU RESEARCH CENTER LTD.
    Inventors: Suk-Jin Koo, Ki-Hwan Hwang
  • Patent number: 7391822
    Abstract: A method and apparatus for estimating a signal delay between a transmission signal which is to be processed in a predetermined communication device of a mobile communication system, and a feedback signal. Each of the transmission and feedback signals is sampled for a predetermined length, and signal power magnitude values are computed in a sample unit and are stored in first and second memory blocks. Mean squared error (MSE) values are computed from a plurality of samples, while a start sample position of one block is shifted on a basis of a start sample position of the other block. A sample delay value is estimated from a start sample position of the one block with a smallest MSE value such that a sample delay between a transmission signal and a feedback signal is closely estimated regardless of a frequency allocation (FA) value.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: June 24, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoo-Seung Song, Jae-Hyok Lee, Seung-Hwan Lee, Ki-Hwan Hwang, Jae-Ho Jeon, Seung-Joo Maeng