Patents by Inventor Dae-Chul Bae

Dae-Chul Bae 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: 10808292
    Abstract: Provided is a method of manufacturing an HPF part comprising: preparing a steel sheet comprising C: 0.18% to 0.25%, Si: 0.1% to 1.0%, Mn: 0.9% to 1.5%, P: 0.03% or less, S: 0.01% or less, Al: 0.01% to 0.05%, Cr: 0.05% to 0.5%, Ti: 0.01% to 0.05%, B: 0.001% to 0.005%, N: 0.009% or less, and a balance of Fe and impurities; heating the steel sheet at 550° C. to 850° C. followed by maintaining at 640° C. to 680° C., and immersing the steel sheet in a hot dip aluminum plating bath, and a balance of Al and impurities; cooling the plated steel sheet at 15° C./s or faster; heating the cooled hot dip aluminum plated steel sheet at 880° C. to 930° C. followed by maintaining for a certain time; and hot forming the alloyed hot dip aluminum plated steel sheet and quenching at a range of 300° C. or lower at the same time.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: October 20, 2020
    Assignee: POSCO
    Inventors: Il-Ryoung Sohn, Dae-Chul Bae, Heung-Yun Kim
  • Publication number: 20200143061
    Abstract: There is provided a method of tracking the location of the cause of a binary vulnerability, the method being performed by a computing apparatus and comprising: adding first taint information for a first operand register tainted by input data of an error-causing case, generating second taint information for a second operand register tainted by data of the first operand register by using the first taint information; and tracking input data that caused an error among the input data of the error-causing case by tracing back taint information of a register of each operand from a point where the error occurred.
    Type: Application
    Filed: July 19, 2019
    Publication date: May 7, 2020
    Applicant: KOREA INTERNET & SECURITY AGENCY
    Inventors: Hwan Kuk Kim, Tae Eun Kim, Dae Il Jang, Han Chul Bae, Jong Ki Kim, Soo Jin Yoon, Jee Soo Jurn, Geon Bae Na
  • Patent number: 10640840
    Abstract: An HPF molding member having a melted aluminum plating layer formed on the surface of a base steel sheet and excellent delamination resistance. The base steel sheet comprises: 0.18-0.25% by weight of C; 0.1-1.0% by weight of Si; 0.9-1.5% by weight of Mn; 0.03% by weight or less of P; 0.01% by weight or less of S; 0.01-0.05% by weight of Al; 0.05-0.5% by weight of Cr; 0.01-0.05% by weight of Ti; 0.001-0.005% by weight of B; 0.009% by weight or less of N; and the balance Fe and other impurities. The plating layer consists of a soft diffusion layer and a hard alloy layer, the hard alloy layer having a tau layer irregularly and non-continuously dispersed and distributed on the inside thereof at 10% or more of the entire area fraction. The difference in hardness between the alloy layer and the diffusion layer is 400 (Hv) or less.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: May 5, 2020
    Assignee: POSCO
    Inventors: Heung-Yun Kim, Il-Ryoung Sohn, Dae-Chul Bae
  • Publication number: 20200134172
    Abstract: There is provided a method of patching a binary having vulnerability which is performed by a computing device. The method comprises loading a first binary to be patched, into a memory, generating a second binary by patching to call a stack frame initialization function from a vulnerable function of the first binary, executing the stack frame initialization function by calling the vulnerable function when the second binary is executed and initializing a stack frame area of the vulnerable function so as to automatically initialize a variable declared in the vulnerable function.
    Type: Application
    Filed: November 13, 2018
    Publication date: April 30, 2020
    Inventors: Hwan Kuk KIM, Tae Eun KIM, Dae Il JANG, Han Chul BAE, Jong Ki KIM, Soo Jin YOON, Jee Soo JURN, Geon Bae NA
  • Patent number: 10531980
    Abstract: Disclosed is a portable electronic moxibustion therapy device which can be conveniently carried after being charged by a user to provide the effects of conventional moxibustion treatment anywhere and anytime, and which can maximize the effects of moxibustion treatment by directly applying heat stimulation while being near but not in direct contact with an acupuncture point to be treated and simultaneously providing an indirect thermal effect continuously to the surrounding area and the area around the acupuncture point to be treated. The portable electronic moxibustion therapy device according to the present invention comprises: an upper main body including a battery and a control circuit unit provided therein, and separate the skin from the bottom end of the funnel portion.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: January 14, 2020
    Assignees: DONGSHIN UNIVERSITY INDUSTRY-ACADEMY COOPERATION, STORYTECH, INC.
    Inventors: Chang Su Na, Jung Chul Lee, Min Woo Cheon, Dae Hwan Youn, Ki Won Nam, Young Eok Kim, Jung Bin Bae
  • Patent number: 10516573
    Abstract: The present disclosure in some embodiments relates to an automatic configuration tool to configure and install a distributed antenna system and an installation guide using the same. According to an aspect of the present disclosure, a user or a designer is graphically provided with a user interface to define a shape of the distributed antenna system, and is provided with a configuration tool for generating a configuration file for a configuration of an actual distributed antenna system. According to another aspect of the present disclosure, there is suggested a distributed antenna system for providing an installation guide function by using a configuration file generated in the configuration tool.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 24, 2019
    Assignees: KMW U.S.A., Inc., SK Telesys Co., Ltd.
    Inventors: Bung Chul Kim, O Su Shin, Nak Zu E, Bo Yong Bae, Daniel Taeyoon Kim, Joon Hyong Shim, Dae Ho Woo, Dae Kwang Kim, Ki Wook Kim, Soo Young Choi, Myoung Yong Shin, Young Ho Jeon
  • Publication number: 20190264333
    Abstract: Provided is a solution composition for steel sheet surface treatment, comprising 30 wt % to 60 wt % of a trivalent chromium compound containing chromium phosphate (A) and chromium nitrate (B); 0.2 wt % to 0.4 wt % of a rust-inhibiting and corrosion-resisting agent; 0.1 wt % to 0.3 wt % of a molybdenum-based compound; 5 wt % to 10 wt % of a water-soluble cationic urethane resin; 0.5 wt % to 2.0 wt % of a silane coupling agent; and 27.3 wt % to 64.2 wt % of water, a zinc-based plated steel sheet surface-treated with the same, and a manufacturing method therefor, the zinc-based plated steel sheet surface-treated with the solution composition for steel sheet surface treatment containing trivalent chromium may have an excellent effect on corrosion resistance, blackening resistance, fingerprint resistance, oil resistance, and alkali resistance.
    Type: Application
    Filed: June 14, 2017
    Publication date: August 29, 2019
    Inventors: Soo-Hyoun CHO, Dae-Chul BAE, Dong-Yun KIM, Chang-Hyun PARK
  • Publication number: 20180223387
    Abstract: Provided is a method of manufacturing an HPF part comprising: preparing a steel sheet comprising C: 0.18% to 0.25%, Si: 0.1% to 1.0%, Mn: 0.9% to 1.5%, P: 0.03% or less, S: 0.01% or less, Al: 0.01% to 0.05%, Cr: 0.05% to 0.5%, Ti: 0.01% to 0.05%, B: 0.001% to 0.005%, N: 0.009% or less, and a balance of Fe and impurities; heating the steel sheet at 550° C. to 850° C. followed by maintaining at 640° C. to 680° C., and immersing the steel sheet in a hot dip aluminum plating bath, and a balance of Al and impurities; cooling the plated steel sheet at 15° C./s or faster; heating the cooled hot dip aluminum plated steel sheet at 880° C. to 930° C. followed by maintaining for a certain time; and hot forming the alloyed hot dip aluminum plated steel sheet and quenching at a range of 300° C. or lower at the same time.
    Type: Application
    Filed: April 3, 2018
    Publication date: August 9, 2018
    Inventors: Il-Ryoung SOHN, Dae-Chul BAE, Heung-Yun KIM
  • Patent number: 9963758
    Abstract: Provided is a hot press-formed (HPF) member with excellent powdering resistance at the time of press forming. The HPF member includes a hot-dip coating layer containing Al on a surface of a base steel sheet. The base steel sheet includes, based on wt %, 0.18-0.25% of C, 0.1-1.0% of Si, 0.9-1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01-0.05% of Al, 0.05-0.5% of Cr, 0.01-0.05% of Ti, 0.001-0.005% of B, 0.009% or less of N, the balance Fe, and the other impurities. The hot-dip coating layer comprises a soft diffusion layer and a hard alloy layer. The alloy layer has a Tau phase in the range of 10-30%, in terms of area percent.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: May 8, 2018
    Assignee: POSCO
    Inventors: Il-Ryoung Sohn, Dae-Chul Bae, Heung-Yun Kim
  • Publication number: 20160376679
    Abstract: An HPF molding member having a melted aluminum plating layer formed on the surface of a base steel sheet and excellent delamination resistance. The base steel sheet comprises: 0.18-0.25% by weight of C; 0.1-1.0% by weight of Si; 0.9-1.5% by weight of Mn; 0.03% by weight or less of P; 0.01% by weight or less of S; 0.01-0.05% by weight of Al; 0.05-0.5% by weight of Cr; 0.01-0.05% by weight of Ti; 0.001-0.005% by weight of B; 0.009% by weight or less of N; and the balance Fe and other impurities. The plating layer consists of a soft diffusion layer and a hard alloy layer, the hard alloy layer having a tau layer irregularly and non-continuously dispersed and distributed on the inside thereof at 10% or more of the entire area fraction. The difference in hardness between the alloy layer and the diffusion layer is 400 (Hv) or less.
    Type: Application
    Filed: August 29, 2016
    Publication date: December 29, 2016
    Inventors: Heung-Yun KIM, Il-Ryoung SOHN, Dae-Chul BAE
  • Publication number: 20160362764
    Abstract: Provided is a hot press-formed (HPF) member with excellent powdering resistance at the time of press forming. The HPF member includes a hot-dip coating layer containing Al on a surface of a base steel sheet. The base steel sheet includes, based on wt %, 0.18-0.25% of C, 0.1-1.0% of Si, 0.9-1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01-0.05% of Al, 0.05-0.5% of Cr, 0.01-0.05% of Ti, 0.001-0.005% of B, 0.009% or less of N, the balance Fe, and the other impurities. The hot-dip coating layer comprises a soft diffusion layer and a hard alloy layer. The alloy layer has a Tau phase in the range of 10-30%, in terms of area percent.
    Type: Application
    Filed: August 29, 2016
    Publication date: December 15, 2016
    Inventors: Il-Ryoung SOHN, Dae-Chul BAE, Heung-Yun KIM
  • Publication number: 20140377453
    Abstract: The present invention relates to an insulating adhesive composition for metal printed circuit board, an adhesive-coated metal plate using the same, and a method for manufacturing the adhesive-coated metal plate. The adhesive composition according to the present invention forms an adhesive layer that is excellent in terms of adhesion to a copper foil, electrical insulating properties, and thermal resistance. The composition contains a specific epoxy resin, a curing agent and alumina. According to the present invention, in coating the metal plate with the solvent type adhesive, a roll coating method is used to perform a continuous coating process on the metal plate, thereby improving productivity when compared to the general method using a sheet type adhesive film.
    Type: Application
    Filed: December 21, 2012
    Publication date: December 25, 2014
    Inventors: Chan Sup Park, Rae-Hong Cho, Dong Hyon Kim, Kyung Ho Park, Sang-Kwon Han, Chong Soo Park, Bae Geun Lee, Jung Bong Kim, Jae Man Han, Tae Kyoo Shin, Dae Chul Bae
  • Patent number: 8722204
    Abstract: Provided is an aluminum coated steel sheet having excellent oxidation and heat resistance. The aluminum coated steel sheet includes an aluminum coating layer and an alloy layer. The aluminum coating layer is formed on a surface of a steel sheet which includes 0.001 to 0.015 wt % of carbon (C), 0.05 to 0.3 wt % of silicon (Si), 0.1 to 0.6 wt % of manganese (Mn), 0.01 to 0.05 wt % niobium (Nb), 0.01 wt % or less of phosphorus (P), 0.01 wt % or less of sulfur (S), 0.1 wt % or less of soluble aluminum (Al), 0.05 to 0.5 wt % of copper (Cu), 0.05 to 0.5 wt % nickel (Ni), 0.001 to 0.01 wt % of nitrogen (N), and the balance of Fe and inevitable impurities. The alloy layer includes an intermetallic compound at an interface between the steel sheet and the aluminum coating layer.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: May 13, 2014
    Assignee: Posco
    Inventors: Dae-Chul Bae, Tae-Hun Lim, Young-Sool Jin
  • Publication number: 20130280552
    Abstract: Provided is an aluminum coated steel sheet having excellent oxidation and heat resistance. The aluminum coated steel sheet includes an aluminum coating layer and an alloy layer. The aluminum coating layer is formed on a surface of a steel sheet which includes 0.001 to 0.015 wt % of carbon (C), 0.05 to 0.3 wt % of silicon (Si), 0.1 to 0.6 wt % of manganese (Mn), 0.01 to 0.05 wt % niobium (Nb), 0.01 wt % or less of phosphorus (P), 0.01 wt % or less of sulfur (S), 0.1 wt % or less of soluble aluminum (Al), 0.05 to 0.5 wt % of copper (Cu), 0.05 to 0.5 wt % nickel (Ni), 0.001 to 0.01 wt % of nitrogen (N), and the balance of Fe and inevitable impurities. The alloy layer includes an intermetallic compound at an interface between the steel sheet and the aluminum coating layer.
    Type: Application
    Filed: December 9, 2011
    Publication date: October 24, 2013
    Applicants: POSCO COATED & COLOR STEEL CO., LTD., POSCO
    Inventors: Dae-Chul Bae, Tae-Hun Lim, Young-Sool Jin
  • Publication number: 20080286603
    Abstract: Disclosed is a steel sheet that exhibits an ultra-high strength after hot press forming followed by rapid cooling, and an enhanced yield strength after painting. The steel sheet has a composition comprising 0.1% to 0.5% by weight of C, 0.01% to 1.0% by weight of Si, 0.5% to 4.0% by weight of Mn, 0.1% by weight or less of P, 0.03% by weight or less of S, 0.1% by weight of soluble Al, 0.01% to 0.1% by weight of N, 0.3% by weight or less of W, and the balance Fe and other inevitable impurities. Further disclosed are a hot-pressed part made of the steel sheet and a method for manufacturing the hot-pressed part. The hot-pressed part achieves a high increment in yield strength after heat treatment for painting while ensuring an ultra-high tensile strength. Furthermore, the hot-pressed part exhibits superior adhesion to a coating layer, good surface appearance and improved corrosion resistance after painting.
    Type: Application
    Filed: December 1, 2006
    Publication date: November 20, 2008
    Applicant: POSCO
    Inventors: Jin-Keun Oh, Dae-Chul Bae, Seong-Ju Kim, Kwang-Geun Chin, Jae-Ryung Lee, Young-Jun Park