baber/WOPTO huggingface dataset:
Patent KR-20000004477-A (KR)
Title: Sense amplifier
Inventor: RYU NAM GYU
IPC: H01L27/108
Filed: 1998-06-30
Abstract: PURPOSE: A sense amplifier is reduced in size while performing the same operation as the conventional sense amplifier. CONSTITUTION: A two-port sense amplifier comprises: a PMOS transistor of which a drain terminal is connected to a bit line; a second PMOS transistor of which gate/source terminals are connected to gate/source terminals of the first PMOS transistor; a third PMOS transistor of which a source terminal is connected in serial to a drain terminal of the second PMOS transistor; a first inverter of which an output terminal is connected to a gate terminal of the third PMOS transistor; a fourth PMOS transistor of which a drain terminal is connected to a bit bar line; a firth PMOS transistor of which a source terminal is connected to a source terminal of the fourth PMOS transistor; a sixth PMOS transistor of which a source terminal is connected in serial to a drain terminal of the firth PMOS transistor; a second inverter of which an output terminal is connected to a gate terminal of the sixth PMOS transistor; a first delay element connected to the bit line and the second inverter; and a second delay element connected to the bit bar line and the first inverter.
Patent KR-20000008688-A (KR)
Title: Dust eliminating device for a screen of a projection television
Inventor: KIM HEE CHEOL
IPC: H04N5/74
Filed: 1998-07-15
Abstract: PURPOSE: A device for eliminating dust on a screen of a projection television is provided to prevent the flaming of screen quality and improve the screen quality by preventing dust and other dust like material from piling up on the screen. CONSTITUTION: The device using a screen characterizes in forming a conductive material at the black strip part of the fresnel screen(4) and combining the fresnel screen (4) and lenticular screen(5) with the conductive tape. The conductive material is formed by adding additional chrome component as a magnetic medium at the black ink of the black strip part. Accordingly, dust and other dust like materials are prevented from piling on the screen and the quality of the screen in its brightness is improved.
Patent KR-20000008716-A (KR)
Title: Method of transmitting digital information including a voice information for ascertaining the quantity of received information
Inventor: KIM SUNG DONG
IPC: H04L29/08
Filed: 1998-07-15
Abstract: PURPOSE: A method of transmitting digital information which includes a voice information for ascertaining the quantity of information is provided. CONSTITUTION: A method of transmitting digital information includes the steps of: receiving an order of asking to suggest a quantity of information and transmit a voice information informing a quantity of digital information transmitted from a receiving part during transmitting the digital information to the receiving part (300); calculating the quantity of digital information transmitted to this time and a quantity of information to transmit thereby generating data of the quantity of information (300); converting the data of the quantity of information into the voice information (320, 325); transmitting the voice information to the receiving part(330); and transmitting a remaining information(335). Therefore, when data such as a program or information is transmitted through a computer network, the user of the receiving part can know the received quantity of data and the remaining quantity of data.
Patent KR-20000008815-A (KR)
Title: Capacitor of semiconductor device and manufacturing method thereof
Inventor: CHOI SEONG JE
IPC: H01L29/92
Filed: 1998-07-16
Abstract: PURPOSE: A capacitor of a semiconductor device is provided to prevent the leakage current characteristic of a dielectric film from being worse, and to improve the breakdown voltage characteristic. CONSTITUTION: The capacitor of a semiconductor comprises a dielectric film between first and second conducting layers. The dielectric film is a multi dielectric film consisting of different types of dielectric films. A second multi dielectric film is provided between the multi dielectric film and the second conducting layer. The multi dielectric film comprises a first dielectric film formed on the first conducting layer and a second dielectric film formed on the second dielectric film. The first and second dielectric films are one of a Pool Frankel type of dielectric and a Fowler Nordheim type of dielectric, respectively. The Pool Frankel type of dielectric is any one selected from SiO2, Si3N4, and SiON. The Fowler Nordheim type is any one selected from Al2O3, AlN, TiO2, ZrO2, HfO2, Ta2O5, Pb2O5, PbTiO3, PZT, BST, SrTiO3, CeO2, Y2O3, MgO, and SrO.
Patent KR-20000009141-A (KR)
Title: Self-resonant amplified ozone system
Inventor: OH YEON HYENG
IPC: C02F1/48
Filed: 1998-07-22
Abstract: PURPOSE: A self-purification ozone system causes no secondary pollution and purifies waste water to produce water having a vital characteristic. CONSTITUTION: The self-purification system generates electrical energy, oxygen, water and magnetic property to eliminate causes of pollution and produce a bio-energy in treatment of industrial waste water, overcoming the problems of the conventional chemical treatment and incineration. Air or oxygen is compressed and transferred to a cooling system via a blower and the compressed air or oxygen is passed through a dehumidifier in order to remove moisture. The dehumidified air and oxygen is brought in contact with a self-resonant amplification ozone system and applied to an ozone generator. Here, a control system examines the measurement and property. The self-purification system uses wavelength energy and related reactions instead of chemical methods in treatment of waste water and reduces time without a need of subsequent processes.
Patent KR-20000010018-A (KR)
Title: Manufacturing method of semiconductor device
Inventor: PARK DONG CHEOL
IPC: H01L21/24
Filed: 1998-07-29
Abstract: PURPOSE: A manufacturing method of semiconductor device is provided to enhance coupling force between a metal film and a semiconductor substrate, workability and reliability, and to prevention to the contamination of a chamber and the metal film. CONSTITUTION: The present invention discloses a manufacturing method of semiconductor device comprising: a step forming an active area and a device dividing area on a semiconductor substrate; a step forming a gate electrode having a gate insulation film and a side wall insulation film on the active area; a step forming a high melting point metal film for forming silicide on the front surface of the semiconductor substrate having the gate electrode; a step forming a buffer film for preventing the scattering of the metal film and the contamination of the chamber due to sputtering in injecting ions into the metal film; a step performing an ion injection process for forming a diffusion area on the bottom of the substrate; a step injecting amorphous ions to enhance the coupling force between the substrate and the metal film; and a step form a silicide film in the contact area between the metal film and the silicon.
Patent KR-19990014281-A (KR)
Title: 데이터 송신 장치, 데이터 수신 장치 및 데이터 기록 장치
IPC: H04N7/52
Filed: 1998-07-29
Abstract: 데이터 전송 장치에 있어서, MPEG2 인코더로부터 출력된 프로그램 스트림의 데이터를, MPEG2 전송 스트림을로 변환하지 않고서, 1394 I/F를 이용하여 전송하는 것을 가능하게 한다. 
     MPEG2 인코더에 의해 출력된 MPEG2 프로그램 스트림의 데이터를, MPEG2 전송 스트림의 패킷 사이즈 정도로 작게 분할하는 데이터 분할기(104)와, 해당 데이터 분할기로부터 출력되는 패킷에 헤더를 부가하여 패킷을 생성하는 패킷 생성기(105)를 구비하고, 해당 패킷을 1394 I/F로서의 데이터 송신기(107)를 거쳐 네트워크 N상에 출력하도록 했다.
Patent KR-20000013602-A (KR)
Title: Active matrix liquid crystal display device and method thereof
Inventor: LEE HYUN CHANG
IPC: G09G3/36
Filed: 1998-08-11
Abstract: PURPOSE: An active matrix liquid crystal display(LCD) device and method thereof is provided to compensate a difference of feed through voltage and prevent distortion of image on LCD panel. CONSTITUTION: The active matrix liquid crystal display device and method thereof comprises a plurality of liquid cells, a plurality of source lines, and a plurality of reference voltage lines and a unit. In the active matrix liquid crystal display device, the plurality of liquid cells are formed a matrix type. The plurality of source lines and the plurality of reference voltage lines forces electric field to liquid cells. The unit differs a center value of data for source signal and reference voltage signal while identical gray scaled source signal is forced in two of liquid crystal cell.
Patent KR-19980081984-A (KR)
Title: 수직분할 이중 캔.
IPC: B65D17/00
Filed: 1998-08-11
Abstract: 음료수 캔의 중앙을 수직격벽(2)으로 분할하고 상면 따개(3)에 의해 절취되는 절취선(4)을 상기 수직격벽을 중심으로 양측에 형성하므로서 양쪽의 절취선을 각각 따내서 반쪽씩 들어 있는 음료수를 선택적으로 마실수 있게 한 것이다.
Patent KR-19990023772-A (KR)
Title: 가변 용량 열 펌프 냉매의 증기 분리
IPC: F25B13/00
Filed: 1998-08-21
Abstract: 열 펌프 시스템은 주 실내 코일의 아래에 설치되고, 밸브들에 의해 병렬로 연결되는 별도의 실외 코일을 가진다.  난방 모드에서 시스템 시동 중에, 보조 코일의 입구는 폐쇄되고, 압축기의 진공은 고 휘발성이고 고압인 성분을 증발하여 시스템을 충전시키도록 출구는 개방된다.  다음에, 출구 밸브는 보조 코일내 저압 성분을 가두면서 폐쇄된다.  제2 실시예에서, 축적기는 냉매 혼합물의 진공 분리에서 보조 코일을 도와주도록 이용된다.  변형예들은 시동시 확장 밸브를 통한 흐름 저지를 포함한다.
Patent KR-19990007519-A (KR)
Title: 복수의 가입자번호를 사용하는 무선호출시스템 및 무선호출기
IPC: H04B5/04
Filed: 1998-08-29
Abstract: 본 발명은, 복수의 가입자번호를 사용하는 무선호출시스템 및 무선호출기에 있어서, 하나의 무선호출기로 복수의 가입자번호를 사용할 수 있도록 한, 복수의 가입자번호를 사용하는 무선호출시스템 및 무선호출기에 관한 것으로서, 본 발명에 따른 복수의 가입자번호를 사용하는 무선호출시스템은, 전화망 또는 컴퓨터통신망과 연결되는 접속수단; 상기 접속수단으로부터 수신되는 신호에 포함된 가입자번호가 복수의 가입자번호를 사용하는 무선호출기에 해당하는 가입자번호인 가를 판별하여, 상기 신호에 포함된 가입자번호에 연계된 무선호출기 식별번호를 검출하고, 상기 검출된 무선호출기 식별번호와 상기 신호에 포함된 호출정보를 호출메시지 데이터로 생성하는 무선호출 제어수단; 상기 생성되는 호출메시지 데이터를 무선송출하는 무선송출수단; 및 상기 무선송출되는 호출메시지 데이터에 포함된 무선호출기 식별번호를 검출하여, 기저장된 복수의 무선호출기 식별번호 중 일치하는 임의의 한 식별번호에 상응하는 정보와 상기 호출정보를 함께 출력하는 무선호출기를 포함하여 구성되어, 하나의 무선호출기로 복수개의 가입자번호를 사용하고 싶은 경우, 원하는 가입자번호 숫자만큼 무선호출기를 구비해야하는 불편함을 제거함과 아울러, 상기 복수의 가입자번호를 하나의 그룹단위로 종합하여 호출 및 음성사서함서비스를 제공받을 수 있도록 한 매우 유용한 발명인 것이다.
Patent KR-20000004851-A (KR)
Title: Semiconductor device and manufacturing method thereof
Inventor: OUZZI SHINJI
IPC: H01L21/60
Filed: 1998-09-04
Abstract: PURPOSE: A semiconductor device is provided to minimize and to make light. CONSTITUTION: The semiconductor device comprises: a semiconductor chip(1) having a electrode pad area with lots of a first electrode pad(3) connected to a electronic circuit formed on a circuit area on which the electronic circuit is formed; a second electrode pad(4) formed on the circuit area on a surface of the semiconductor chip, and connected to the first electrode pad; a resist layer(2) formed on the surface of the semiconductor chip; and a plurality of bumps(6,7) connected to the second electrode pad. The bump is conductive. The rear plate of the semiconductor chip is covered with an insulation film.
Patent KR-19990036652-A (KR)
Title: 자속 가이드로서의 감지층을 갖는 자기 터널 접합부 자기 저항판독 헤드
IPC: G11B5/40
Filed: 1998-09-18
Abstract: 자기 기록 시스템용 자기 터널 접합부(magnetic tunnel junction: MTJ) 자기 저항 헤드는 자기 기록 매체로부터 터널 접합부까지 자속을 유도하도록 하는 자속 가이드 기능을 하는 MTJ 감지층 또는 자유 강자성층을 갖는다. MTJ 고정 강자성층은 헤드의 감지 표면으로부터 함입되는 전방 에지를 갖는다. 고정 및 자유 강자성층은 모두 MTJ 터널 장벽층의 대향면에 접촉하고 있지만, 자유 강자성층은 터널 장벽층 또는 고정 강자성층의 후방 에지 중에서 감지 표면에 더 가까운 층의 후방 에지를 넘어서 연장된다. 이것은 터널 접합부 영역 내에서 자속이 0이 아님을 의미한다. 고정 강자성층의 자화 방향은 바람직하게는 반강자성층과의 계면 교환 결합에 의해 감지 표면에 통상적 수직한 방향으로 고정되며, 따라서 자기 기록 매체에 수직한 방향으로 고정된다. 자유 강자성층의 자화 방향은 자기장이 인가되지 않는 경우 매체의 표면에 통상적으로 평행한 방향으로 정렬되며, 매체로부터 자기장이 인가되는 경우에는 자유롭게 회전한다. 자유 강자성층의 측면에 길이 방향으로 인접한 높은 보자력을 갖는 자화되기 어려운 자기 재료층은 자유 강자성층의 자화를 바람직한 방향으로 바이어스시킨다.
Patent KR-20000020776-A (KR)
Title: Method of manufacturing self aligned contact of semiconductor device
Inventor: AN CHANG NAM
IPC: H01L21/28
Filed: 1998-09-23
Abstract: PURPOSE: A method of manufacturing a self-aligned contact of a semiconductor device is provided to optimize a design so that a contact hole can be formed in a desirable position by a spacer process only without using a contact hole mask when forming a line and space pattern. CONSTITUTION: A method of manufacturing a self-aligned contact of a semiconductor device comprises the steps of: forming a line and space pattern while forming a mask for making a contact hole by a spacer process used in the succeeding process; evaporating a conductive thin film on a semiconductor substrate; evaporating a first insulation layer on the conductive thin film; etching the first insulation layer and the conductive thin film in the lower part by using the line and space pattern; evaporating a second insulation layer on the entire surface to the depth in which a gap-fill is realized in the position of the contact hole and not in positions other than the contact hole; and forming the contact hole by making a spacer in the position of the contact hole by etching the entire surface.
Patent KR-20000021695-A (KR)
Title: Method for selecting language of multi-language on-screen display character-generating device in tv set
Inventor: PARK JOO DEOK
IPC: H04N5/445
Filed: 1998-09-30
Abstract: PURPOSE: A method for selecting a language is provided to display selectable languages in order, during the predetermined time in a multi-language on-screen display character-generating device in a TV set. CONSTITUTION: A language selection method of a multi-language on-screen display character-generating device in a TV set, comprises the steps of: selecting a language selection sub menu(S2) for displaying each language, to select a language when a menu is on; referring to a current language/moving a cursor(S3) for referring to a variable of the current language to display current OSD(On Screen Display) characters, and moving the cursor so that the cursor is located in a corresponding language; generating/displaying the OSD characters(S4/S6) for controlling a multi-language OSD character-generating device(13) during the predetermined time, generating and displaying the OSD characters to the referred current language; selecting a display language(S5) for selecting a corresponding language, and displaying the OSD characters; and storing a next language(S7) for storing a language which is next to the current language from a language table to the variable of the current language, and returning to the S3 step to display to the language.
Patent KR-20000021896-A (KR)
Title: Device for controlling speed of fan motor for picture forming device and controlling method thereof
Inventor: JO JAE CHEOL
IPC: H02P7/29
Filed: 1998-09-30
Abstract: PURPOSE: A device for controlling speed of a fan motor for a picture forming device is provided to continually reduce/control rotation speed of the fan motor, without using load resistance. CONSTITUTION: A device for controlling speed of a fan motor for a picture forming device comprises: a controller for varying a duty rate of pulse according to a copy operation condition; a time counter for controlling pulse applying time according to the controller; and a driver for driving a fan motor as time allowed in the time counter. The controller varies the duty rate of the pulse, applied so that rotation speed of the fan motor is differently driven, according when it is copying stand by time, and when forming the picture, and when completing the formation of the picture. The rotation speed of the fan motor, when completing the formation of the picture, is bigger than the speed when it is the standing by time, and the rotation speed of the fan motor, when the formation of the picture is bigger than the rotation speed of the fan motor when completing the formation of the picture.
Patent KR-19980087911-A (KR)
Title: 가향 인스턴트 커피
Filed: 1998-09-30
Abstract: 본  발명은  서방성을  갖는  향조성물을  인스턴트  커피에  혼합하여  원두커피와  유사한  향을  즐길  수  있도록  한  가향  인스턴트  커피에  관한  것이다. 
     본  발명에  따른  가향  인스턴트  커피는  커피원두로부터  추출한  것  또는  인공적으로  합성한  액상의  커피향유를  서방코팅제로  코팅하여  서방성을  갖는  향조성물을  만들고,  이를  커피액을  냉동건조  등의  방법에  의하여  수득한  입상의  인스턴트  커피에  혼합하는  것으로  이루어지며,  이에  의하여  상기  서방성  향조성물로부터  커피향을  서방시키도록  하므로써  인스턴트  커피의  편리성과  원두커피향의  서방에  의한  방향을  동시에  즐길  수  있도록  하므로써  끽다의  효과를  높일  수  있도록  한  점에  특징이  있다. 
     따라서,  인스턴트  커피  특유의  사용상의  간편성과  원두커피  특유의  향효과를  동시에  즐길  수  있는  가향  인스턴트  커피를  제공하는  효과가  있다.
Patent KR-20000025129-A (KR)
Title: Method for loading firmware and guiding firmware version in device of switching system
Inventor: KIM UK
IPC: H04M3/00
Filed: 1998-10-08
Abstract: PURPOSE: A method for loading a firmware in a device of a switching system is to easily change firmware comprised in the device of exchange. And, a method for guiding a firmware version in a device of a switching system is to eliminate the possibility of unnecessary change of the firmware. CONSTITUTION: A firmware loading method of a device of a switching system comprises the steps of: providing a sub processor controlling a device with a firmware stored by a host processor when an operator specifies the device and commands a firmware loading through a man machine communication unit; providing the device with the firmware by the sub processor; and loading the firmware into a memory by the device. A firmware version guiding method in a device of a switching system comprises the steps of: demanding a firmware version for a device of a sub processor controlling the device by a host processor; demanding a firmware of the device by the sub processor, according to the demand of the host processor; informing the sub processor with the firmware version by the device, according to the demand of the sub processor; and displaying the firmware version to a man machine communication unit by the host processor.
Patent KR-20000027128-A (KR)
Title: Method for trench isolation
Inventor: LEE SEUNG WOO
IPC: H01L21/76
Filed: 1998-10-27
Abstract: PURPOSE: A method for trench isolation is provided to form an isolation layer thicker than an existing isolation layer by injecting an insulated layer structure as much as a predetermined depth to a bottom of a trench and performing an annealing process. CONSTITUTION: A method for trench isolation comprises the steps of: accumulating sequentially a pad insulated layer(115) and a photoresist pattern(120) on an upper portion of a semiconductor substrate; forming a photoresist pattern pattern(120) for exposing the pad insulated layer of a field area by performing a selective photo etching process for the photoresist pattern; removing the pad insulating layer to expose an upper portion of the substrate and etching the exposed field area as much as a predetermined depth to forming a trench(125a); injecting oxygen ions(130) to a bottom of the trench to form an oxygen ion injection layer; removing the photoresist pattern and performing an annealing process for increasing a thickness to approach an upper portion of a lower portion isolation layer to the bottom of the trench; and forming an upper portion isolation layer by filling an insulator to an inner portion of the trench and forming a double isolation layer accumulated with the upper portion isolation layer and the lower portion isolation layer.
Patent KR-20000028141-A (KR)
Title: Method for using two relay lines in line interface module
Inventor: LEE SANG WON
IPC: H04L5/22
Filed: 1998-10-30
Abstract: PURPOSE: A method is for using two relay lines in a line interface module is provided to extend the subscriber accommodation capacity by operating two E1 links in a board of the same dimension by an improved circuit configuration capable of processing 60 channels in one board and by loading a software to drive the circuit configuration. CONSTITUTION: In realizing a software function as to the operation of a switch performed in the inside of a multi channel controller in case that signals from TDM A(300) and TDM B(310) are inputted to SCC 1 and SCC 2 or the signals are flowed on the contrary, a method comprises the steps of: operating a time slot assigner(110) by a serial interface clock router register; transmitting TDM A and TDM B to SCC 1 and SCC 2 respectively by controlling the time slot assigner and an SI RAM(100) by an operation; setting a corresponding protocol desired by each channel of TDM A and TDM B after transmission; sending the desired time slot to SCC 1 and SCC 2 respectively; and transmitting the time slot and setting up a dual port RAM and the SCC channel characteristics appropriately.
Patent KR-19990045010-A (KR)
Title: 메모리셀영역 및 주변회로영역을 구비한 반도체 메모리장치
IPC: H01L27/108
Filed: 1998-11-04
Abstract: 제 1 배선층은 반도체기판 상의 메모리셀영역 내에 형성된다.     제 1 배선층을 덮는 제 1 층간절연막은 반도체기판 위에 형성된다.     제 2 배선층은 제 1 층간절연막 상의 메모리셀영역 내에 형성된다.     제 2 배선층을 덮는 제 2 층간절연막은 제 1 층간절연막 위에 형성된다.     주변회로영역 내의 하나 이상의 회로에 접속된 신호배선은 제 2 층간절연막 상의 경계영역 내에 형성된다.     더미(dummy) 배선은 신호배선 아래의 제 1 배선층 또는 제 2 배선층과 동일한 층으로 형성된다.
Patent KR-20000031555-A (KR)
Title: Word line decoding circuit of semiconductor memory device
Inventor: YUN HOE SEON
IPC: G11C11/00
Filed: 1998-11-07
Abstract: PURPOSE: A word line decoding circuit is provided to attain high speed decoding operation without a loss in a layout area. CONSTITUTION: A word line decoding circuit includes a buffer section(10) having a plurality of buffers(B1-Bi), a first decoding section(20) having a plurality of first decoders(PD1-PDs), and a second decoding section(40) having a plurality of second decoders (MD1-MDk). The buffers(B1-Bi) temporarily store and output plural address signals(A1-Ai). The first decoders (PD1-PDs) pre decode the address signals(A1-Ai) offered from the buffers(B1-Bi). The second decoders(MD1-MDk) decode the output signals from the first decoders(PD1-PDs) and generate signals to activate word lines(WL1-WLk) when a control transistor(CT) operates in response to a pulse control signal(PCS). A source of the control transistor(CT) is grounded and a drain thereof is commonly connected to the second decoders(MD1-MDk). The word line decoding circuit reduces delay time in activating the word lines, so that high speed decoding operation is attained. Further, loss in layout area is prevented since the delay circuit inside the first decoders is not required.
Patent KR-20000040539-A (KR)
Title: Fusing roller of wet type printer
Inventor: LEE JIN SU
IPC: G03G15/20
Filed: 1998-12-18
Abstract: PURPOSE: A fusing roller of a wet type printer is provided to prevent pollution of fusing roller by toner particles by adding silicon oil to a rubber layer or coating a silicon oil layer on the rubber layer to surround the rubber layer, and improve the reliability of the printer by preventing printing errors due to the rolling of a printing paper by depressing the surface energy increase of the fusing roller. CONSTITUTION: A fusing roller of a wet type printer includes a supporting axis made of a metal material, and a rubber layer formed with a predetermined thickness on an outer periphery of the supporting axis and mixed with a predetermined amount of silicon oil for surrounding a surface of the rubber layer by escaping out on the surface at a higher temperature of printing mode for preventing pollution of the surface by toner particles, wherein the silicon oil is added in the rubber mixing procedure and the amount of the added silicon oil is approximately 2weight% to 3weight%.
Patent KR-20000040932-A (KR)
Title: Method for preparing aggregate for concrete having excellent compression strength
Inventor: KIM DAE YEONG
IPC: B28B1/30
Filed: 1998-12-21
Abstract: PURPOSE: A method for preparing an aggregate characterized in that the aggregate prepared therefrom has excellent compression strength, while maintaining expansibility similar to natural sand even without seasoning-treatment. CONSTITUTION: A method for the preparation of the aggregate comprises: a step of crushing stainless steel slag and grinding the crushed stainless steel slag into a certain particle size; a step of primarily grading the grinded slag to remove pulverized slag; a step of undergoing gravity separation treatment and magnetic separation treatment to remove metallic components; and a step of secondarily grading the slag to remove pulverized slag. The aggregate for concrete remarkably improves compression strength of concrete, where the compression strength of the aggregate for concrete is about 475 - 525 kgf/cm¬2, compared with compression strength of natural sand, 440 kgf/cm¬2. In addition, the aggregate for concrete has a remarkably improved compression strength of 475 - 525 kgf/cm¬2, compared with a compression strength of sand, 440 kgf/cm¬2, and good expansibility even without seasoning, while existing stainless steel slag requires costly and time-consuming seasoning.