baber/WOPTO huggingface dataset:
Patent KR-20120017849-A (KR)
Title: Cleaner
Inventor: KIM YOUNG GIE
IPC: A47L9/00
Filed: 2010-08-20
Abstract: PURPOSE: A cleaner is provided to rotate a main body toward a user by driving a motor and automatically move the main body to a reference distance. CONSTITUTION: A cleaner comprises a main body(1), a drive unit(2), a suction unit(3), a distance detection unit(4), a direction detection unit(5), and a control unit. The main body comprises a suction motor and is moved by the drive unit. The suction unit is installed separate from the main body. The distance detection unit senses the distance between the main body and a user. The direction detection unit senses the location of the user based on the main body. The control unit controls the drive unit so that the main body is directed toward the user and the distance falls within a reference distance range.
Patent KR-20120022093-A (KR)
Inventor: JUNG KYU SUK
IPC: E01C5/00
Filed: 2010-08-25
Abstract: 본 발명은 시각장애인용 보도블럭에 관한 것으로, 더욱 상세하게는 시각장애인용 보도블럭의 몸체의 상부면과 돌출부 및 돌출점에 형성되어 있는 유색층에 있어서, 상기 돌출부와 돌출점에는 상부면에 형성된 유색층과는 다른 색상을 가지는 유색층을 형성하는 것을 특징으로 하는 시각장애인용 보도블럭에 관한 것으로, 그 구성은 일정한 두께를 가지는 사각형의 몸체와, 상기 몸체의 상부면에 일정한 간격으로 형성되며, 소정의 폭과 길이로 형성되는 다수의 돌출부와, 상기 몸체의 상부면과 다수의 돌출부에 형성되는 유색층을 포함하는 통상의 시각장애인용 보도블럭에 있어서, 상기 다수의 돌출부에는, 상기 몸체의 상부면에 형성된 유색층과는 다른 색상을 갖는 유색층이 형성되는 것을 특징으로 하는 시각장애인용 보도블럭에 관한 것이다. 
상기에서와 같이 본 발명에 따른 시각장애인용 보도블럭에 의하면, 일반인들에게 시각적 이미지를 부각시킴으로써, 시각장애인이나 약시자 뿐만 아니라 일반인에게도 시각장애인용 보도블럭에 친숙함을 느끼도록 할 수 있는 효과가 있다.
Patent KR-20120019640-A (KR)
Title: Spindle motor
Inventor: PARK YOUNG HA
IPC: F16C17/10
Filed: 2010-08-26
Abstract: PURPOSE: A spindle motor is provided to reduce abrasion by forming a thrust dynamic bearing unit in a minute gap between the upper side of a support and the lower side of a rotation shaft. CONSTITUTION: A spindle motor(200) includes a rotation unit and a fixing unit. The rotation unit includes a rotation shaft(210), a hub(220), and a magnet(230). The fixing unit includes a sleeve(240), a bracket(250), a stator(260), and a support(270). The rotation shaft is rotatably supported by the sleeve. The hub is combined with the rotation shaft. The magnet is fixed to the inner side of the hub. The bracket is combined with the outer side of the sleeve by pressure or adhesion. The bracket is combined with the outer side of the sleeve with pressure or adhesion. The stator is combined with the outer side of the bracket. The support is combined with the sleeve when the support supports the rotation shaft.
Patent KR-20120022327-A (KR)
Title: Pharmaceutical composition for preventing or treating sterility by implantation failure comprising placenta-derived stem cells or placenta extract
Inventor: KIM GI JIN
IPC: A61P15/08
Filed: 2010-09-02
Abstract: PURPOSE: A composition containing a mixture of placenta-derived stem cells, placental extract, or placenta-derived stem cells is provided to prevent or treat sterility. CONSTITUTION: A pharmaceutical composition for preventing or treating sterility caused by implantation disorders contains placenta-derived stem cells, placental extract, or placenta-derived stem cell, placenta extract as an active ingredient. A method for preparing the placenta-derived stem cells comprises: a step of preparing chorionic plate membrane from a placenta; a step of scrapping the cells in the chorion valve from the placenta; a step of reacting mesenchymal stem cells; a step of performing enzyme reaction of the cells at 20-30°C and adding FBS to stop enzyme reaction; a step of centrifuging reactant liquid to collect cells; and culturing collected cells in a medium containing FBS and antibiotics.
Patent KR-20120023879-A (KR)
Title: Method for charging coal in coke oven
Inventor: HU GANG SOO
IPC: C10B31/04
Filed: 2010-09-02
Abstract: PURPOSE: A coal charging method of a coke oven is provided to prevent the spreading of gas, dust, and flame during charge of coal by properly changing a coal charging mode when the spray pressure of high-pressure ammonia water. CONSTITUTION: A coal charging method of a coke oven comprises the steps of: injecting coal with a charging car(120) into a top charging port(112) of a coke oven(100), detecting the spray pressure of high-pressure ammonia water at a bent portion(150) of a riser pipe(130) after starting of coal charging, comparing the detected value with a set reference value, executing a normal work mode in case of the detected spray pressure over the reference value, and omitting the normal work mode and ending the coal charging in case of the detected spray pressure less than the reference value.
Patent KR-20120023927-A (KR)
Title: Rack for sewer conduit dredger
Inventor: JEONG YOUN GON
IPC: E03F7/12
Filed: 2010-09-03
Abstract: PURPOSE: A rack for a sewer pipe dredging machine is provided to remarkably improve dredging efficiency by horizontally moving a crushing/collecting device along the width of a sewer pipe inside the sewer pipe. CONSTITUTION: A rack(1) for a sewer pipe dredging machine comprises an upper structure(10), a hose reel mounting unit(11), a crushing/collecting device loading unit(12), and a crushing/collecting device transfer vehicle(13). The upper structure is formed by assembling multiple horizontal and vertical members(100,101). The hose reel mounting unit is formed in the bottom end of the upper structure. The crushing/collecting device loading unit is formed in the bottom end of the hose reel mounting unit in an L-shape. The crushing/collecting device transfer vehicle is installed inside the crushing/collecting device loading unit and transfers a crushing/collecting device in the width direction of a sewer pipe.
Patent KR-20120025092-A (KR)
Title: Frame for wooden window
Inventor: LEE POONG HYUN
IPC: E06B3/74
Filed: 2010-09-07
Abstract: PURPOSE: A wooden window frame is provided to remarkably improve sealability and air-tightness by additionally forming a packing material in a frame having a recessed part. CONSTITUTION: A wooden window frame comprises a first frame(210) and a second frame(220). A first protruded joint(212) is formed in one end of the first frame, and a first wall housing(214) is formed in the other end. The second frame is adhered to one end of the first frame. A second recessed joint(222) corresponding to the first protruded joint is formed in one end of the second frame, and a second wall housing(224) is formed in the other end.
Patent KR-20120026940-A (KR)
Title: Apparatus for controlling of air washer
Inventor: YUN DAE DUCK
IPC: F24F6/16
Filed: 2010-09-10
Abstract: PURPOSE: An apparatus for controlling a humidifying air purifier is provided to reduce the measuring error of a water level sensor and to secure stable reference potential by installing the signal ground of the micro computer in a water bath. CONSTITUTION: An apparatus for controlling a humidifying air purifier includes a micro-switch, a water level sensor(2), a micro computer, a lamp, a fan motor, a disk motor, a key inputting part, and a ground electrode(8). The micro-switch detects the separation of an upper case. The level of water in a lower case is detected by the water level sensor. The fan motor drives a sucking fan. The disk motor drives a disk assembly. The micro-computer receives the states of the micro-switch and the water level sensor and operates the fan motor and the disk motor. The lamp is controlled by the controlling signal of the micro computer. The ground electrode supplies reference potential to the micro computer.
Patent KR-20120032676-A (KR)
Title: Electro mechanical brake system and method of controlling the same
Inventor: JUNG JI HYUN
IPC: B60T8/171
Filed: 2010-09-29
Abstract: PURPOSE: An electronic brake system and a control method thereof are provided to improve braking ability by the generation of braking power from each brake system formed in multiple vehicle wheels. CONSTITUTION: An electronic brake system comprises a control device(2). The control device comprises a storage unit(22), a controller(23), and a drive unit(24). The storage unit stores the current value of each motor(M,M') corresponding to multiple target brake forces. The controller determines the target brake force based on the status information of a vehicle. The controller refers the current value of each motor corresponding to the target brake force. The controller controls the drive of each motor to the current value of searched each motor. The drive unit produces the current value of each motor to correspond to the indication of the controller. The drive unit applies the current value on each motor.
Patent KR-20110040680-A (KR)
Title: A wide view angle liquid crystal display device operating in normally white mode
Inventor: PARK SE HONG
IPC: G02F1/1337
Filed: 2010-10-01
Abstract: PURPOSE: A liquid crystal display device with a wide viewing angle is provided to embody a normally white mode in an IPS(In Plane Switching) structure. CONSTITUTION: A liquid crystal display device comprises a first polarizer(163), a second polarizer(161), and liquid crystal(181). The first polarizer has a polarizing axis(103) which is parallel with a first direction. The second polarizer has a polarizing axis in parallel with the first direction. A liquid crystal is placed between the first and the second polarizers and aligned along the first direction or a second direction which is orthogonal direction from the first direction.
Patent KR-20110105695-A (KR)
Inventor: KOZUSHI TAKEHIRO
IPC: G03G15/00
Filed: 2010-10-08
Abstract: 본 발명은 기록 매체의 수용성을 개선한 화상 형성 장치를 제공하는 것을 과제로 한다. 
이러한 과제를 해결하기 위한 수단으로서, 화상 형성 수단의 상방에 기록 매체 배출용의 공간을 사이에 두고 배치되며, 원고의 화상을 판독하는 화상 판독 수단과, 상기 화상 판독 수단에 있어서의 상기 기록 매체 배출 방향의 하류측의 하면에 배치되며, 상기 화상 판독 수단을 지지하는 지지 부재와, 상기 지지 부재 또는 당해 지지 부재의 표면을 덮는 피복 부재에 의해 구성되며, 상기 기록 매체의 배출 방향의 하류측의 선단을 아래를 향해 안내하는 안내부를 구비하고, 상기 기록 매체 배출용의 공간에 배출되는 기록 매체는, 상기 기록 매체 배출 방향에 있어서의 선단이 수평 방향에 대하여 만곡된 상태로 배출되고, 상기 선단은, 상기 기록 매체 배출용의 공간에 있어서의 상기 지지 부재와 상기 화상 판독 수단의 하단면으로 구성되는 공간을 통과하고, 당해 선단은, 상기 안내부에 의해 아래를 향해 안내되어서, 상기 기록 매체는 상기 기록 매체 배출용의 공간에 배출되도록 구성했다.
Patent KR-20120036503-A (KR)
Title: Light emitting device including safety apparatus for power on and off
Inventor: PACK CHUN DON
IPC: F21V25/00
Filed: 2010-10-08
Abstract: PURPOSE: A lighting device is provided to prevent an electric shock by safely switching power of the lighting device. CONSTITUTION: A lamp unit(600) emits light by receiving power and is settled in a lighting device body(21). A cover(23) covers an opening unit of the lighting device body. A sensor(100) generates a sensor signal according to the open and close of the cover. A switch unit(400) supplies or block power to the lamp unit according to the sensor signal.
Patent KR-20120039358-A (KR)
Title: Foam injection system for extinguishing fires and preventing smoke propagation in case of tunnel fires
Inventor: KIM DONG HYEON
IPC: A62C5/02
Filed: 2010-10-15
Abstract: PURPOSE: A foam injecting system for extinguishing fires and preventing smoke in case of tunnel fires are provided to seclude oxygen from outside and prevent diffusion of smoke, thereby minimizing damage of human life and property. CONSTITUTION: A foam injecting system for extinguishing fires comprises a fire detection tool(10), a mixer(20), a foaming form injection nozzle(30), a feed pump(40), and a controller(50). The fire detection tool senses fire break out existence and nonexistence in a tunnel. The mixer mixes foaming agent and water in a constant rate. The foam injection nozzle discharges the foam and is installed with constant intervals. The feed pump compulsorily transfers foams to a nozzle.
Patent KR-20120039806-A (KR)
Inventor: KIM BYEONG EON
IPC: B21D13/02
Filed: 2010-10-18
Abstract: 본 발명은 파형강판이 진입 및 진출되는 개구부를 갖는 본체와, 상기 본체의 상부에 배치되어 승강이동하여 상기 파형강판을 고정하는 상부고정부와, 상기 파형강판이 안착되며, 상기 상부고정부에 대향하여 배치되어 상기 상부고정부와 함께 상기 파형강판을 파지 및 고정하는 하부고정부와, 상기 상부고정부와 상기 하부고정부에 의하여 고정된 상기 파형강판의 양측면을 가압하여 피치를 조절하도록 상기 상부고정부를 가압하는 상부피치조절부와, 상기 상부고정부와 상기 하부고정부에 의하여 고정된 상기 파형강판의 양측면을 가압하여 피치를 조절하도록 상기 하부고정부를 가압하는 하부피치조절부를 구비하여, 벤딩처리된 파형강판의 중앙부와 양측끝단에서의 피치를 일정하게 조절할 수 있을 뿐만 아니라, 종래와 같이 파형강판의 체결구멍에 돌기를 삽입하여 피치를 조절하지 않고 상하부 고정부에 의해 피치를 조절할 수 있기 때문에 체결구멍이나 파형강판에 변형을 일으키지 않고 안정되게 파형강판의 피치를 조절할 수 있고, 상기 상하부 고정부와 상기 상하부의 피치조절유닛에 의해 미리 입력된 값만큼 정확하게 피치를 조절할 수 있으므로, 피치조절의 정확성을 확보할 수 있고, 피치조절의 작업을 보다 효율적으로 이룰 수 있고, 상기 본체기울기 조절유닛에 의해, 벤딩처리된 파형강판의 길이가 길더라도 안정적으로 파형강판의 피치를 조절할 수 있다.
Patent KR-20120043846-A (KR)
Title: Shoes cabinet chair for built-in
Inventor: KIM YOUNG SIN
IPC: A47B61/04
Filed: 2010-10-27
Abstract: PURPOSE: A chair for built-in shoes cabinet is provided to improve outside look and prevent from reducing active region of front doors. CONSTITUTION: A chair for built-in shoes cabinet is arranged at lower part of front side of a frame and rotates to right and left sides by operation of users. The chair for built-in shoes cabinet comprises two vertical members which are arranged to exit direction in parallel, at least one of horizontal members which is connected to the vertical member, a base portion(200) is slid to enable the users to enter to and exit from the shoes cabinet, a sliding sector which is combined in the shoes cabinet, a vertical member(310), and a sitting part(320).
Patent KR-20120046479-A (KR)
Title: Steel composite girder structure and construction method thereof
Inventor: LEE PIL GOO
IPC: E01D21/00
Filed: 2010-11-02
Abstract: PURPOSE: A steel composite girder structure and a construction method thereof are provided to connect multiple steel composite girders adjacently arranged without a level difference. CONSTITUTION: A steel composite girder structure(100) comprises multiple steel composite girders(110,120) and connection units(130). The steel composite girders are arranged in a horizontal direction to be separated from each other. The connection units are arranged between the adjacently arranged steel composite girders and connect the steel composite girders.
Patent KR-20120048825-A (KR)
Title: Method of manufacturing a semiconductor device
Inventor: NOH JIN TAE
IPC: H01L21/8247
Filed: 2010-11-08
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to form a polysilicon layer of a uniform thin film type by using both a silicon source gas having a high molecular weight and a silicon source gas having a low molecular weight together. CONSTITUTION: A semiconductor pattern(115) is formed on a substrate(100). Interlayer dielectric film patterns(135a-135d) contacting with an outer sidewall of the semiconductor pattern are formed on the substrate. A tunnel insulating layer(140) is formed along the outer sidewall of the semiconductor pattern and a surface of the interlayer dielectric film pattern. A charge trapping layer(142) is formed on the tunnel insulating layer. A blocking dielectric layer(144) is formed on the charge trapping layer. Control gate electrodes(150a-150d) are formed on the blocking dielectric layer.
Patent KR-20120049444-A (KR)
Title: 규사를 이용한 메탈 실리콘의 연속제조 공정
Inventor: LIM JONG MUN
IPC: C01B33/023
Filed: 2010-11-08
Abstract: 본 발명은 메탈 실리콘의 연속 제조공정에 관한 것이다. 그러한 메탈 실리콘의 연속 제조공정은 규사의 채취, 크기별 분류, 세척, 탈수, 건조 및 탈철공정을 진행하는 전처리 공정과; 전처리 된 규사를 고주파에 의한 예열 및 저전압 아크를 이용한 융용과, 고주파에 의한 교반을 연속적으로 처리하는 메인 공정과; 그리고 상기 메인공정에서 예열,용융, 교반처리된 규소를 성형하는 후공정을 포함하며, 상기 메인공정은 실리카와 환원제를 가열로의 수직로에 투입하고, 상기 수직로를 따라 하강하는 상기 실리카와 환원제에 마이크로파를 조사함으로써 1차적으로 가열하는 제 1단계와; 상기 제 1단계에서 1차 가열된 액상의 실리카를 용해로에 투입하고, 저전압 아크에 의하여 2차 가열함으로써 산소를 분리하여 규소만을 추출하는 제 2단계와; 그리고 상기 제 2단계에서 추출된 용융 규소를 정련로에 투입하고, 고주파를 조사함으로써 교반시키는 제 3단계를 포함한다.
Patent KR-20120049055-A (KR)
Title: Fertigation apparatus operatable without power for pot cultivation
Inventor: SOHN YONG MAN
IPC: A01G27/02
Filed: 2010-11-08
Abstract: PURPOSE: A powerless irrigation and nutrient solution supplying system for the pot cultivation is provided to enable users to economically induce the greening by smoothly supplying water or a nutrient solution. CONSTITUTION: A powerless irrigation and nutrient solution supplying system for the pot cultivation comprises the following: a pot mounting unit including a groove(154) for storing water or a nutrient solution, for dipping the lower side of a pit in water; a water container stand(153) for mounting a water container; a connection passage(155) connecting the water container stand and the pot mounting unit; a valve body(131) forming an outlet of the water container using a through-hole; a moving member(132) for opening the outlet; a water level controller(140) controlling the opening and closing of the valve body for maintaining the uniform water level inside the groove; and a floater(141) floating on the water or the nutrient solution inside the groove.
Patent KR-20120051368-A (KR)
Title: System for synchronizing connected device using i-frame of broadcasting contents and method therof
Inventor: PARK JONG YOUL
IPC: H04N7/24
Filed: 2010-11-12
Abstract: PURPOSE: A synchronization system and method thereof are provided to enable plural terminals to receive a service based on broadcast content by generating an event based on an I-frame. CONSTITUTION: A gateway server(120) divides broadcast content into a broadcast stream and an I-frame. The gateway server adds event information to the I-frame. After a frame signal is generated, the gateway server synchronizes an I-frame signal with the broadcast stream. A first connected terminal(130) receives the broadcast stream. One or more second connected terminals generate events by receiving the broadcast stream and the I-frame signal.
Patent KR-20120052497-A (KR)
Inventor: BAK JIN CHEOL
IPC: B23B39/00
Filed: 2010-11-16
Abstract: PURPOSE: A device for processing a connector for high pressure hoses of gas pipes is provided to reduce processing time and manufacturing costs by forming a tapered portion of a rod-shaped material through screw rolling. CONSTITUTION: A device for processing a connector for high pressure hoses of gas pipes comprises the steps of: forging a rod-shaped material(1), forming a tapered portion on the forged material through screw-rolling(2), and drilling a through hole(3).
Patent KR-20120052800-A (KR)
Title: Fire extinguisher stand
Inventor: LEE SUNG
IPC: G08B17/06
Filed: 2010-11-16
Abstract: PURPOSE: A fire extinguisher supporting board for effectively guiding the location of a fire extinguisher is provided to minimize the generation of damages caused by fire. CONSTITUTION: A fire extinguisher supporting board includes a main body, a receiving unit(120), a controller(130), an alarming speaker(140), a light-emitting unit(150), and a power supplying unit(160). The main body includes a mounting groove with an opening on the upper side for mounting a fire extinguisher, and a protrusion on the upper rear side of the main body. The receiving unit is installed on the main body for receiving radio signals outputted when a fire sensor or a fire hydrant activated. The controller outputs a control signal when the receiving unit receives the radio signals. The alarming speaker outputs alarming sound by the control signal. The light-emitting unit emits light by the control signal. The power supplying unit supplies electricity to the alarming speaker and the light-emitting unit.
Patent KR-20120053583-A (KR)
Title: Apparatus and method for spatial multiplexing transmission in multi-antenna wireless communication systems
Inventor: LEE YONG HWAN
IPC: H04B7/04
Filed: 2010-11-18
Abstract: PURPOSE: A spatial multiplexing signal transmission method and apparatus thereof are provided to increase effective channel capacity performance of a system by adaptively determining system variables according to operation environment. CONSTITUTION: A downlink channel capacity calculation unit(201) deducts maximum downlink channel capacity by determining system variables. An effective channel capacity calculation unit(203) calculates effective channel capacity by using the system variables transmitted by the downlink channel capacity calculation unit. A system variable determination unit(205) determines optimal system variables for maximizing the calculated channel capacity.
Patent KR-20120057877-A (KR)
Title: Double tube heat exchanger refrigerant distributor.
Inventor: PARK SUNG JUN
IPC: F28D1/04
Filed: 2010-11-29
Abstract: PURPOSE: A double tube type refrigerant distributer for a heat exchanger is provided to supply refrigerant evenly through discharging refrigerant through a plurality of coolant tubes being connected to a inside body through hole and a outside body through hole. CONSTITUTION: A double tube type refrigerant distributer for a heat exchanger comprises a inside body(2), an inlet hole(7), a plurality of refrigerant inner body through holes(3), an outside body(4), a plurality of refrigerant distribution outer body through holes(5), and a plurality of coolant tubes(8). The inside body is straight tube shape and coolant passes through the hollow of the inside body. The plurality of refrigerant inner body through holes are arranged in the inside body with determined interval. The plurality of refrigerant distribution outer body through holes are formed opposite to the through holes of the inside body. The plurality of coolant tubes discharge refrigerant.
Patent KR-20120059921-A (KR)
Title: Apparatus for measuring gap between nozzle and roll
Inventor: LEE WANG HA
IPC: G01B11/14
Filed: 2010-12-01
Abstract: PURPOSE: A device for measuring an interval between a nozzle and roll is provided to easily measure an interval between a nozzle and roll manufacturing a strip with a melted metal because a nozzle where the melted metal is discharged and a roll installed in the lower part of the nozzle are installed to be rotated. CONSTITUTION: A device(100) for measuring an interval between a nozzle and roll comprises a transmitter(200), a receiver(300), and a controller. The transmitter transmits signals to measure an interval between a nozzle(N) where a melted metal is discharged and a roll. The roll installed in the lower part of the nozzle to be rotated manufactures a strip(S) with the melt metal. The transmitter is arranged to be adjacent to a space between the nozzle and roll. The receiver receives signals transmitted from the transmitter and arranged to be diagonally faced to the transmitter. The controller electrically connected to the transmitter and receiver controls a signal transmission of the transmitter and analyzes the signals received by the receiver, thereby calculating the interval between the nozzle and roll.
Patent KR-20120059931-A (KR)
Title: Magnetic levitation conveyance system having enhaced curve driving performance
Inventor: HAN HYUNG SUK
IPC: B60L13/06
Filed: 2010-12-01
Abstract: PURPOSE: A magnetic levitation transferring system with improved curve driving performance is provided to have excellent curve driving performance by installing a bogie top plate and a bogie frame to be mutually rotated. CONSTITUTION: A magnetic levitation transferring system with improved curve driving performance(100) comprises an orbit(120), a bogie(130). The bogie is installed on the orbit and is floated from the orbit to move. The bogie comprises multiple bogie frames(110) and a bogie top plate(150). A floating electromagnet(114) of a vehicle side facing the orbit is installed in each bogie frame. The bogie top plate is installed on the bogie frames. The bogie frames are installed to be rotated from the bogie top plate.
Patent KR-20120062200-A (KR)
Title: Production method of a direct decomposition catalyzer for cleaning nitrous oxide
Inventor: CHO SUNG SU
IPC: B01J37/08
Filed: 2010-12-06
Abstract: PURPOSE: A direct decomposing catalyst manufacturing method for eliminating nitrous oxide is provided to shorten times required for manufacturing processes by omitting an ion-exchanging process. CONSTITUTION: Zeolite such as industrially acquired mordenite(MOR), ZSM-5, natural zeolite, FAU is prepared as the carrier of a catalyst(S100). A catalytic active material is carried in zeolite by mixing a reagent in the form of oxide or chloride containing the catalytic active material with the zeolite(S200). The resultant product is dried(S300). The resultant product is plasticized at a temperature of 500 to 800 degrees Celsius to obtain a catalyst(S400). The catalyst is steam-treated at a temperature of 500 to 800 degrees Celsius according to the crystalline state of the catalyst.