Patents by Inventor Ju-Sang Lee
Ju-Sang 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: 11674196Abstract: A steel reinforcing bar contains 0.06 wt % to 0.11 wt % carbon, more than 0 and not more than 0.25 wt % silicon, 0.8 wt % or more and less than 2.0 wt % manganese, more than 0 and not more than 0.01 wt % phosphorus, more than 0 and not more than 0.01 wt % sulfur, 0.01 to 0.03 wt % aluminum, 0.50 to 1.00 wt % nickel, 0.027 to 0.125 wt % molybdenum, more than 0 and not more than 0.25 wt % chromium, more than 0 and not more than 0.28 wt % copper, more than 0 and not more than 0.01 wt % nitrogen, and the remainder being iron and unavoidable impurities. The reinforcing bar has a surface layer and a core. The surface layer has a hardened layer of tempered martensite, and the core has a mixed structure of bainite, ferrite and pearlite.Type: GrantFiled: January 22, 2018Date of Patent: June 13, 2023Assignee: Hyundai Steel CompanyInventors: Jun Ho Chung, Tae Hyung Kim, Ju Sang Lee, Se Jin Kim, Kyoung Rok Lim
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Publication number: 20220364194Abstract: Provided is an ultra-high-strength reinforcing bar and a method for manufacturing the same are disclosed. In an exemplary embodiment, the ultra-high-strength reinforcing bar includes an amount of 0.10 to 0.45 wt % carbon (C), an amount of 0.5 to 1.0 wt % silicon (Si), an amount of 0.40 to 1.80 wt % manganese (Mn), an amount of 0.10 to 1.0 wt % chromium (Cr), an amount greater than 0 and less than or equal to 0.2 wt % vanadium (V), an amount greater than 0 and less than or equal to 0.4 wt % copper (Cu), an amount greater than 0 and less than or equal to 0.5 wt % molybdenum (Mo), an amount of 0.015 to 0.070 wt % aluminum (Al), an amount greater than 0 and less than or equal to 0.25 wt % nickel (Ni), an amount greater than 0 and less than or equal to 0.1 wt % tin (Sn), an amount greater than 0 and less than or equal to 0.05 wt % phosphorus (P), an amount greater than 0 and less than or equal to 0.03 wt % sulfur (S), an amount of 0.005 to 0.Type: ApplicationFiled: October 6, 2020Publication date: November 17, 2022Inventors: Jun Ho Chung, Ju Sang Lee, Rok Seok Kim, Chung Yeob Lee
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Publication number: 20210366017Abstract: A big data-based price comparison service providing system using time-series analysis and price prediction is provided. A big data-based price comparison service providing system includes a user terminal and a price comparison service providing server including a big datafication unit, a database unit, and a search providing unit.Type: ApplicationFiled: September 25, 2020Publication date: November 25, 2021Applicant: Nature Mobility Co., Ltd.Inventor: Ju Sang LEE
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Publication number: 20210366287Abstract: Disclosed is a system for providing a big data-based AI automatic allocation matching service using taxi demand prediction. The system comprises a user terminal, a taxi terminal and a matching service providing server including a big datafication unit, a prediction unit, a transmission unit, a matching unit, and an alarm unit.Type: ApplicationFiled: September 29, 2020Publication date: November 25, 2021Applicant: Nature Mobility Co., Ltd.Inventor: Ju Sang LEE
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Publication number: 20210204632Abstract: The present disclosure relates to a variable helmet that can be unfolded flat and carried or kept when not in use. A configuration of the variable helmet is characterized by including a protective pad in which a plurality of unit pads are planarly coupled like a mosaic so that the protective pad is in a hemispherical shape to cover and protect a head of a wearer and is able to be unfolded flat like a plate, the protective pad having unevenness portions provided in a sawtooth shape at both ends thereof; both-end fixing means allowing the unit pads to have a hemispherical shape by tightening the both ends of the protective pad; and a chin strap allowing the protective pad to be fixed in a state in which the protective pad is covered on the head.Type: ApplicationFiled: September 25, 2020Publication date: July 8, 2021Applicant: Nature Mobility Co., Ltd.Inventor: Ju Sang LEE
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Patent number: 10984318Abstract: A word semantic embedding apparatus includes: a data storing unit to store a lexical semantic network including word dictionary data and word semantic data; a word list generating unit to extract vocabularies having a predetermined part of speech from the stored word dictionary data and generate a list of words to be learned; a processing data generating unit to bring the generated list of words to be learned and the word semantic data of a word to be learned included in the list of words to be learned from the data storing unit and process the data suitable for word embedding learning to generate processing data; and a word embedding learning unit to learn the word to be learned through the word embedding learning using a learning model formed of an input/output layer and a projection layer with the generated processing data to generate a word vector.Type: GrantFiled: May 17, 2017Date of Patent: April 20, 2021Assignee: UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATIONInventors: Cheol Young Ock, Joon Choul Shin, Ju Sang Lee
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Publication number: 20210104560Abstract: An image sensing device is disclosed. The image sensing device includes a substrate including a photoelectric conversion element that produces an electrical signal in response to light incident to the photoelectric conversion element, and a grid structure disposed over the substrate. The grid structure includes a support wall, an air layer disposed at both sides of the support wall, a support cap disposed over the support wall and the air layer, and a capping layer formed over the support wall, the support cap, and the air layer.Type: ApplicationFiled: February 10, 2020Publication date: April 8, 2021Inventor: Ju Sang Lee
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Patent number: 10849471Abstract: A robot cleaner includes a cleaner main body, a driver to move the cleaner main body, a sensor to sense an obstacle, and a sensor driver to rotate the sensor so that the sensor reciprocates in left and right directions within a predetermined angle range about a reference direction. In addition, a processor controls the driver to adjust a traveling direction of the cleaner main body based on the sensing result of the sensor, and to change the reference direction with a rotation direction if the cleaner main body is rotated.Type: GrantFiled: July 21, 2017Date of Patent: December 1, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Jea-yun So, Dae-hyung Kim, Jin-hee Kim, Han-kyeol Kim, Gi-hyeong Lee, Ju-sang Lee, Yeon-kyu Jeong
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Publication number: 20200347480Abstract: A steel reinforcing bar contains 0.06 wt % to 0.11 wt % carbon, more than 0 and not more than 0.25 wt % silicon, 0.8 wt % or more and less than 2.0 wt % manganese, more than 0 and not more than 0.01 wt % phosphorus, more than 0 and not more than 0.01 wt % sulfur, 0.01 to 0.03 wt % aluminum, 0.50 to 1.00 wt % nickel, 0.027 to 0.125 wt % molybdenum, more than 0 and not more than 0.25 wt % chromium, more than 0 and not more than 0.28 wt % copper, more than 0 and not more than 0.01 wt % nitrogen, and the remainder being iron and unavoidable impurities. The reinforcing bar has a surface layer and a core. The surface layer has a hardened layer of tempered martensite, and the core has a mixed structure of bainite, ferrite and pearlite.Type: ApplicationFiled: January 22, 2018Publication date: November 5, 2020Inventors: Jun Ho Chung, Tae Hyung Kim, Ju Sang Lee, Se Jin Kim, Kyoung Rok Lim
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Patent number: 10741596Abstract: An image sensing device and a method for forming the same are disclosed. The image sensing device includes a substrate including one or more photoelectric conversion elements, and a grid structure disposed over the substrate. The grid structure includes an air layer, a support film formed over the air layer, and a capping film formed at side surfaces of the air layer and the support film and at a top surface of the support film.Type: GrantFiled: July 18, 2019Date of Patent: August 11, 2020Assignee: SK hynix Inc.Inventors: Chul Kim, Young Woong Do, Won Jin Kim, Jong Hwan Kim, Sung Jun Park, Moung Seok Baek, Ju Sang Lee, Seong Hoe Jeong
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Publication number: 20200212095Abstract: An image sensing device and a method for forming the same are disclosed. The image sensing device includes a substrate including one or more photoelectric conversion elements, and a grid structure disposed over the substrate. The grid structure includes an air layer, a support film formed over the air layer, and a capping film formed at side surfaces of the air layer and the support film and at a top surface of the support film.Type: ApplicationFiled: July 18, 2019Publication date: July 2, 2020Inventors: Chul Kim, Young Woong Do, Won Jin Kim, Jong Hwan Kim, Sung Jun Park, Moung Seok Baek, Ju Sang Lee, Seong Hoe Jeong
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Publication number: 20190188263Abstract: A word semantic embedding apparatus includes: a data storing unit to store a lexical semantic network including word dictionary data and word semantic data; a word list generating unit to extract vocabularies having a predetermined part of speech from the stored word dictionary data and generate a list of words to be learned; a processing data generating unit to bring the generated list of words to be learned and the word semantic data of a word to be learned included in the list of words to be learned from the data storing unit and process the data suitable for word embedding learning to generate processing data; and a word embedding learning unit to learn the word to be learned through the word embedding learning using a learning model formed of an input/output layer and a projection layer with the generated processing data to generate a word vector.Type: ApplicationFiled: May 17, 2017Publication date: June 20, 2019Applicant: UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATIONInventors: Cheol Young Ock, Joon Choul Shin, Ju Sang Lee
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Publication number: 20180116475Abstract: A robot cleaner includes a cleaner main body, a driver to move the cleaner main body, a sensor to sense an obstacle, and a sensor driver to rotate the sensor so that the sensor reciprocates in left and right directions within a predetermined angle range about a reference direction. In addition, a processor controls the driver to adjust a traveling direction of the cleaner main body based on the sensing result of the sensor, and to change the reference direction with a rotation direction if the cleaner main body is rotated.Type: ApplicationFiled: July 21, 2017Publication date: May 3, 2018Inventors: Jea-yun SO, Dae-hyung KIM, Jin-hee KIM, Han-kyeol KIM, Gi-hyeong LEE, Ju-sang LEE, Yeon-kyu JEONG
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Patent number: 9914219Abstract: A robot cleaner based on wall following and a controlling method thereof are provided. The robot cleaner includes a first detector configured to generate a wall detection signal by detecting a wall, a second detector configured to generate a first contact signal through contact with the wall, a cleaner main body in which the first and second detectors are disposed and which includes a driver configured to drive on a surface to be cleaned, and a controller which is mounted on the cleaner main body and to which the first and second detectors and the driver are electrically coupled.Type: GrantFiled: January 25, 2016Date of Patent: March 13, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ju-sang Lee, Hong-jun Kim, Chin-woo Kang, Suk-hoon Song, Hee-suk Yoon, Ki-yong Lee
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Publication number: 20160214260Abstract: A robot cleaner based on wall following and a controlling method thereof are provided. The robot cleaner includes a first detector configured to generate a wall detection signal by detecting a wall, a second detector configured to generate a first contact signal through contact with the wall, a cleaner main body in which the first and second detectors are disposed and which includes a driver configured to drive on a surface to be cleaned, and a controller which is mounted on the cleaner main body and to which the first and second detectors and the driver are electrically coupled.Type: ApplicationFiled: January 25, 2016Publication date: July 28, 2016Inventors: Ju-sang LEE, Hong-jun KIM, Chin-woo KANG, Suk-hoon SONG, Hee-suk YOON, Ki-yong LEE
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Patent number: 9226635Abstract: A control method of a robot cleaner for traveling to clean includes checking information about a predetermined traveling pattern; determining a traveling trajectory based on a traveling speed; generating a traveling pattern based on the determined traveling trajectory and the information about the predetermined traveling pattern, wherein the traveling pattern includes a first straight path, a first rotation path connected to the first straight path and for rotation in a first direction, a second straight path connected to the first rotation path, and a second rotation path connected to the second straight path and for rotation in a second direction; and repeatedly traveling along the generated traveling pattern at regular intervals. Therefore, since the robot cleaner performs cleaning without scattering dust, the efficiency of cleaning may be improved.Type: GrantFiled: October 9, 2013Date of Patent: January 5, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Shin Kim, Jeong Gon Song, Ju Sang Lee, Jun Pyo Hong
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Patent number: 8918950Abstract: Disclosed is a mobile robot system having a plurality of exchangeable work modules, thereby providing a mobile robot capable of performing various functions at a low cost. The mobile robot system comprises a plurality of work modules, which perform different works, respectively; a module station for connecting the plurality of work modules; and a mobile robot, which selects and connects to one of the plurality of work modules from the module station according to a work task to be performed. The mobile robot autonomously operates to perform the work task.Type: GrantFiled: February 27, 2006Date of Patent: December 30, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-gon Song, Sam-jong Jeung, Ju-sang Lee, Jang-youn Ko, Kwang-soo Lim
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Publication number: 20140100736Abstract: A control method of a robot cleaner for traveling to clean includes checking information about a predetermined traveling pattern; determining a traveling trajectory based on a traveling speed; generating a traveling pattern based on the determined traveling trajectory and the information about the predetermined traveling pattern, wherein the traveling pattern includes a first straight path, a first rotation path connected to the first straight path and for rotation in a first direction, a second straight path connected to the first rotation path, and a second rotation path connected to the second straight path and for rotation in a second direction; and repeatedly traveling along the generated traveling pattern at regular intervals. Therefore, since the robot cleaner performs cleaning without scattering dust, the efficiency of cleaning may be improved.Type: ApplicationFiled: October 9, 2013Publication date: April 10, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Shin KIM, Jeong Gon Song, Ju Sang Lee, Jun Pyo Hong
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Patent number: 8209053Abstract: An improved cleaning robot that uses a simple structure to sense an obstacle is provided. The cleaning robot includes a robot main body comprising a driving unit to drive the cleaning robot, and a cleaning unit to remove dust, a bumper unit which is movably mounted in the robot main body to protect the robot main body from collision with an obstacle, a sensor unit which supports the bumper unit movably in a plurality of directions to sense the collision of the bumper unit and the obstacle, and a control unit which controls the driving unit on the basis of a signal sensed by the sensor to avoid the obstacle.Type: GrantFiled: December 7, 2007Date of Patent: June 26, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-woung Kim, Sam-jong Jeung, Jeong-gon Song, Myeong-ho Kim, Tae-young Ryu, Ju-sang Lee, Heung-yi Kim, Sam-hyun Choi, Jang-youn Ko, Dae-hyung Kim, Hak-bong Lee, Yoon-kyunh Cho
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Patent number: 7975790Abstract: A wheel driving apparatus for a moving apparatus is provided. The wheel driving apparatus includes a wheel, a driving motor to generate a driving power to rotate the wheel, a gear box to transmit the rotational force of the driving motor to the wheel, and a guide shaft movable vertically with respect to the base member, wherein the wheel, the driving motor, the gear box, and the guide shaft are connected integrally with each other to move vertically with respect to the base member in unison.Type: GrantFiled: May 16, 2008Date of Patent: July 12, 2011Assignee: Samsung Gwangju Electronics Co., Ltd.Inventors: Myeong-ho Kim, Sam-jong Jeung, Jeong-gon Song, Il-du Jung, Ju-sang Lee, Heung-yi Kim, Sam-hyun Choi, Jang-youn Ko, Kyoung-woung Kim, Dae-hyung Kim, Hak-bong Lee, Yoon-kyung Cho