baber/WOPTO huggingface dataset:
Patent KR-20090068265-A (KR)
Title: A method for quantitation of collagen in tissue
Inventor: VILLANUEVA PATRICIA A
IPC: G01N33/48
Filed: 2007-09-21
Abstract: For successful wound healing to occur, the newly formed skin must generate tensile strength through collagen deposition. Measurement of collagen in the granulating wound bed may be predictive of successful wound healing. Existing methods for collagen measurement either require specialized equipment, or do not allow for discrimination of potential interfering molecules. Herein described is an accurate, specific and reliable method to extract and quantify collagen from tissue utilizing high pressure liquid chromatography techniques. The method is sensitive enough to measure the small amounts of collagen found in newly healing wounds.
Patent KR-20090058595-A (KR)
Title: Transmission in multi-channel communication system using selective channel power control
Inventor: KETCHUM JOHN W
IPC: H04B7/26
Filed: 2002-05-17
Abstract: Techniques to process data for transmission over a set of transmission channels selected from among all available transmission channels. In an aspect, the data processing includes coding data basd on a common coding and modulation scheme to provide modulation symbols and pre-weighting the modulation symbols for each selected channel based on the channel's characteristics. The pre-weighting may be achieved by "inverting" the selected channels so that the received SNRs are approximately similar for all selected channels. With selective channel inversion, only channels having SNRs at or above a particular threshold are selected, "bad" channels are not used, and the total available transmit power is distributed across only "good" channels. Inproved performance is achieved due to the combined benefits of using only the Ns best channels and matching the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme.
Patent KR-20090091169-A (KR)
Title: High speed serializer apparatus
Inventor: GONZALEZ JASON
IPC: H03M9/00
Filed: 2007-11-13
Abstract: A Serializer/Deserializer apparatus comprises a serializer adapted to take N parallel bits of data and shifts them out serially at N times a clock speed to a transmitter, a transmitter enable block adapted to start the serializer means, and a count block. The serializer comprises flip-flops and muxes, and is adapted to N parallel bits of data and shifts them out serially at N times a clock speed to a transmitter. The transmitter enable block comprises an inverter and flip-flops, and is adapted to start the serializer. The transmitter enable block comprises an inverter, flip-flops, and a NOR gate, and is adapted to create a waveform which programs data loading in the serializer. ® KIPO & WIPO 2009
Patent KR-20090094841-A (KR)
Title: Reinforced contact elements
Inventor: GRITTERS JOHN K
IPC: G01R1/073
Filed: 2007-11-25
Abstract: Embodiments of reinforced resilient elements and methods for fabricating same are provided herein. In one embodiment, a reinforced resilient element includes a resilient element configured to electrically probe a device to be tested, the resilient element having a first end and an opposing second end; and a reinforcement member having a first end affixed to the resilient element at the first end thereof or at a point disposed between the first and the second ends of the resilient element, an opposing second end disposed in a direction towards the second end of the resilient member, and a resilient portion disposed between the first and second ends, wherein the resilient portion is not affixed to the resilient member.
Patent KR-20090106575-A (KR)
Title: Conductive bump, method for producing the same, and electronic component mounted structure
IPC: H01L21/60
Filed: 2008-03-04
Abstract: Disclosed is a conductive bump formed on an electrode surface of an electronic component. This conductive bump is composed of a plurality of photosensitive resin layers having different conductive filler contents. Consequently, this conductive bump is able to realize apparently conflicting functions, namely improvement in adhesion strength with the electrode and reduction of contact resistance.
Patent KR-20090115794-A (KR)
Title: Process for preparing conductive films and articles prepared using the process
Inventor: FAIRBANK CARL
IPC: C08J5/18
Filed: 2008-01-25
Abstract: A free standing film includes: i. a matrix layer having opposing surfaces, and ii. an array of nanorods, where the nanorods are oriented to pass through the matrix layer and protrude an average distance of at least 1 micrometer through one or both surfaces of the matrix layer. A method for preparing the free standing film includes (a) providing an array of nanorods on a substrate, optionally (b) infiltrating the array with a sacrificial layer, (c) infiltrating the array with a matrix layer, thereby producing an infiltrated array, optionally (d) removing the sacrificial layer without removing the matrix layer, when step (b) is present, and (e) removing the infiltrated array from the substrate to form the free standing film. The free standing film is useful as an optical filter, ACF, or TIM, depending on the type and density of nanorods selected.
Patent KR-20100014395-A (KR)
Title: Mixer for a continuous flow reactor, continuous flow reactor, method of forming such a mixer, and method of operating such a reactor
Inventor: BACHMAN GENE W
IPC: B01J19/24
Filed: 2007-03-15
Abstract: A mixer (100) for a continuous flow reactor (330) and methods for forming the mixer and the operation thereof. The mixer allows for segmentation of a primary reactant flow through a plurality of ports (124) into many smaller flows that are injected as jets into a secondary reactant flow in channels of the mixer. The channel (126) has a constant width dimension to enhance even flow distribution and local, turbulence of the primary and secondary reactant flows. The constant width dimension of the channel and the size and number of the ports of the mixer can be configured to ensure the primary reactant flow injected into the channel directly impinges on a surface (116) of the channel that is opposite the injection point at normal operating conditions.
Patent KR-20090122957-A (KR)
Title: Organic insulating material, varnish for resin film using the same, resin film and semiconductor device
Inventor: SANO YOHKO
IPC: C08F238/02
Filed: 2008-03-07
Abstract: Disclosed is a useful organic insulating material having low dielectric constant, high heat resistance and high mechanical strength. Also disclosed are a resin film using the organic insulating material and a semiconductor device. The organic insulating material contains a prepolymer composed of an adamantane structure compound having a group containing a polymerizable unsaturated bond. The prepolymer has a number average molecular weight of not less than 2,000 but not more than 500,000 in terms of polystyrene as determined by gel permeation chromatography. The group containing a polymerizable unsaturated bond is preferably a group containing a carbon-carbon triple bond. The resin film is obtained by a crosslinking reaction and a condensation reaction of the organic insulating material or a varnish for resin films containing the organic insulating material, which reactions are caused by heating and/or irradiation of an active radiation ray.
Patent KR-20090113912-A (KR)
Title: Script-based system to perform dynamic updates to rich media content and services
Inventor: CHITTURI SURESH
IPC: G06Q50/00
Filed: 2008-02-25
Abstract: A system and method is provided for delivering content to a client device including at least one script without at least one of embedding the at least one script within a web page and referencing the at least one script from the web page. A signal is transmitted to a client device, the signal carrying within a packet stream, a multimedia presentation specified using a markup language and comprised of at least a singledata unit. The single data unit includes at least one of a scene content and a scene update, the scene update including at least one of a scene command and a script fragment.
Patent KR-20100017574-A (KR)
Title: Modified-release particles based on polyelectrolytes and on an active principle and pharmaceutical formulations containing these particles
Inventor: BONNET GONNET CECILE
IPC: A61K9/14
Filed: 2008-05-05
Abstract: The present invention relates to novel polyelectrolyte polymer particles for transporting an active principle (AP), in particular a protein and peptide active principle, and also to novel modified-release pharmaceutical formulations containing said AP microparticles. These novel AP-loaded particles release the AP over a prolonged duration of several days, or even several weeks. The invention relates, in a first aspect, to particles comprising: a) a first polyelectrolyte polymer (PE1) in the charged state, bearing side hydrophobic groups (HG), said first polyelectrolyte polymer (PE1) spontaneously forming, in water, a colloidal solution of particles at at least a value pHm of the pH between 3 and 8; b) a second polyelectrolyte polymer (PE2) of opposite polarity to that of the first polyelectrolyte polymer (PE1), said second polyelectrolyte polymer (PE2) forming, in water, a solution or a colloidal solution at at least said pHm value of the pH; c) at least one active principle (AP) combined non-covalently with the particles of the colloidal solution of the first polyelectrolyte polymer (PE1); said particles being obtained by mixing, at a pH equal to pHm, of the first polyelectrolyte polymer (PE1) in the form of a colloidal solution of particles combined with the active principle (AP) with the second polyelectrolyte polymer (PE2) in the form of a solution or a colloidal solution. The invention also relates to the process for preparing these particles, a pharmaceutical formulation comprising such particles and a process for preparing medications.
Patent KR-20110085388-A (KR)
Title: Nozzle unit, and substrate treating apparatus with it and method for treating substrate thereof
Inventor: KAN JUNG HOON
IPC: H01L21/02
Filed: 2010-01-20
Abstract: PURPOSE: A nozzle unit, and a substrate processing device with the same and a method thereof are provided to select a nozzle according to the amount of flowing chemical liquid to apply a developing solution, thereby reducing the consuming amount of the developing solution. CONSTITUTION: A nozzle arm(132) provides a plurality of flowing paths. A first nozzle(160) is coupled with a nozzle arm and connected to a first flowing path to spray first chemical liquid. A second nozzle(170) is arranged on one side of the first nozzle, coupled with the nozzle arm, and connected to a second flowing path to spray the first chemical liquid in a method different from the first nozzle. The first and second nozzles are adjacent each other on one end of the nozzle arm. The other end of the nozzle arm is connected to a driving device.
Patent KR-20110086299-A (KR)
Title: Speaker
Inventor: KIM BYOUNG WAN
IPC: H04R7/26
Filed: 2010-01-22
Abstract: PURPOSE: A speaker is provided to lower the height of the speaker as much as the interval between the inner circumference side of a vibration plate and the inner circumference side or the bending part of a damper, thereby slimming the speaker. CONSTITUTION: A through hole(113) is formed on one side of a frame(110). A magnetic circuit unit(120) is coupled with the bottom of the frame. The magnetic circuit unit generates a magnetic force. The magnetic circuit unit comprises a plate(121), a magnet(123), and a yoke(125). A sound generating unit(130) reproduces a sound while the sound generating unit vibrates. The sound generating unit is installed in the frame. The sound generating unit comprises a voice coil(131), a vibration plate(133), and a damper(135).
Patent KR-20110087516-A (KR)
Title: 정화기능을 지닌 손소독기
Inventor: LEE YONG HWA
IPC: A61L2/24
Filed: 2010-01-26
Abstract: 본 발명은 소독제를 사용하여 손을 소독하는 장치에 있어서: 내외부를 연통하는 입구커튼(22)과 내부의 상면에 반사면(12)을 구비하는 통형 구조의 본체(10); 상기 본체(10) 상에 약액통(32)과 UV램프(38)를 구비하고, 분사노즐(34)로 소독액을 송출하는 소독부(30); 상기 본체(10)의 공기유입구(41) 상에 항균필터(42)와 송풍팬(44)을 구비하는 공조부(40); 및 상기 입구커튼(22)으로 손의 출입을 검출하여 소독부(30)와 공조부(40)를 작동하는 제어기(50);를 포함하여 이루어지는 것을 특징으로 한다. 
이에 따라, 주기적으로 관리하지 않더라도 자체적으로 세균의 증식을 억제하여 항시 청결한 상태를 유지할 수 있는 효과가 있다.
Patent KR-20110076716-A (KR)
Title: Food waste deodorization module and food waste treatment apparatus having the same
Inventor: SIM SANG GU
IPC: B01D53/32
Filed: 2010-01-27
Abstract: PURPOSE: A deodorizing module and a food disposing apparatus including the same are provided to reduce the operational capacity of a heater in a drying furnace by increasing the thermal efficiency of the apparatus. CONSTITUTION: A deodorizing module for food wastes is composed of a heat exchanger(140) and an electrolytic cell(160). The heat exchanger is arranged at the external side of a drying furnace in which the food wastes are introduced. The heat exchanger implements a heat exchanging process between exhaust gas from the drying furnace and cool air from the outside. A plurality of flowing channels is formed in the heat exchanger. The electrolytic cell implements a deodorizing process with respect to condensed water which is cooled in the heat exchanging process.
Patent KR-20110089746-A (KR)
Title: Centrifugal switch for electric motor
Inventor: LEE WON YONG
IPC: H02P1/42
Filed: 2010-02-01
Abstract: PURPOSE: A centrifugal switch for an electric motor is provided to prevent noise due to components interference by forming a stopper having a narrower end part. CONSTITUTION: In a centrifugal switch for an electric motor, a slider(120) is slid and to be combined in the axial direction of a rotary shaft. A sleeve(140) is combined with the rotary shaft to be arranged in one side of the slider. A cylindrical weight(150) has one side combined with the slider and has the other side combined with the sleeve, and it moves the slider when rotating the rotary shaft. A stopper(155) is formed in the cylindrical weight and has a narrower end part.
Patent KR-20100090652-A (KR)
Title: Resin composition
Inventor: OHASHI SEIICHIRO
IPC: C08L63/00
Filed: 2010-02-05
Abstract: PURPOSE: A resin composition is provided to secure the lamination property of the composition, and to improve the adhesion property with an insulating layer and a conductive layer. CONSTITUTION: A resin composition for a multi-layer printed circuit board contains a cyanate ester resin, an epoxy resin, a thermoplastic resin, talcum, and silica. The thermoplastic resin is a polymer resin selected from the group consisting of a phenoxy resin, a polyimide resin, a polyamideimide resin, a polyetherimide resin, a polysulfone resin, a polyethersulfone resin, a polyphenylene ether resin, a polycarbonate resin, a polyetheretherketone resin, a polyester resin, a polyacetal resin, and a polybutyral resin.
Patent KR-20110092072-A (KR)
Title: Air conditioner and method for controlling of air conditioner
Inventor: KWON KI BAIK
IPC: F24F11/00
Filed: 2010-02-08
Abstract: PURPOSE: An air conditioner and a control method thereof are provided to increase the accuracy of determining the leakage of refrigerant and prevent environmental contamination and additional failure due to the refrigerant leakage. CONSTITUTION: An air conditioner and a control method thereof are as follows. The change of a cycle from the operation parameters of an air conditioner is monitored(S210). It is determined from the change of the cycle whether refrigerant is leaked(S220). A leakage of refrigerant is announced to the outside(S290).
Patent KR-20110093057-A (KR)
Title: Dry kiln
Inventor: BAE DEOK SU
IPC: F26B11/14
Filed: 2010-02-11
Abstract: PURPOSE: A dry kiln is provided to protect the emission of the internal heat source of the main dry kiln body by forming the heating insulating layer and inner shell. CONSTITUTION: A dry kiln comprises a main dry kiln body(H). The main kiln body comprises front and rear wall bodies(3, 4), an outer shell(9), and an inner shell(10). The input chute(5) and burner(6) are installed in the front wall. The rear wall has a discharging port(7) which discharges the dried and crushed material and an exhaust port(8) which discharges the gas and steam vapor. The outer shell comprises a warm layer(13), first and second warm layers(11, 12). The expansion blades which have an extension function are installed in the inner shell.
Patent KR-20110093294-A (KR)
Title: Integrating device of droplet generator and automatic sorter
Inventor: CHO DONG IL
IPC: A61K9/10
Filed: 2010-02-12
Abstract: PURPOSE: An integrated apparatus for automatically generating and classifying droplets is provided to stores classified droplets by automatically droplets according to the mass, size, and composition ratio through the droplet control fluid of a droplet separator. CONSTITUTION: A droplet generator includes a droplet raw material supply unit(110,111,120,121), a droplet generation inducer(200), and a central path(100) and generates droplets by combining one or more droplet raw materials. A droplet classifier classifies the droplet according to weight, size, or composition ratio by using a flow structure or flow of droplet control fluid. The droplet generator is spatially connected to the droplet classifier.
Patent KR-20100096009-A (KR)
Title: System for manufacturing semiconductor package
Inventor: MOON BYUNG KWAN
IPC: H01L23/12
Filed: 2010-02-16
Abstract: PURPOSE: A semiconductor package processing system is provided to improve a UPH(Unit Per Hour) for processing a package by using an automation process which connects a laser process to a cleaning process. CONSTITUTION: A chuck table unit transfers materials to a process region according to a first transfer member and transfers the completely materials to the outside of the process region. A laser unit(12) is arranged on the process region and drills the material with a laser. A cleaning unit(13) removes the contaminant attached to the completely processed material. An off loader unloads the material which is completely processed and cleaned to the outside of the process. A picker unit(15) transfers material while moving among the on loader, the chuck table unit, the cleaning unit, and the off loader.
Patent KR-20110096672-A (KR)
Inventor: OH SEUNG HWAN
IPC: F25D23/02
Filed: 2010-02-23
Abstract: 본 발명은 냉장고 및 냉장고의 아이스 뱅크에 관한 것이다. 
상기한 목적을 달성하기 위한 본 발명의 실시예에 따른 냉장고에는, 저장 공간이 형성되는 저장실; 상기 저장실을 개폐하는 도어; 상기 저장실 또는 도어에 제공되며, 얼음 저장공간이 형성되는 얼음 저장부; 상기 얼음 저장부에 회전 가능하게 제공되며, 상기 얼음 저장공간에 저장되는 얼음을 분쇄시키는 파쇄부재; 상기 파쇄부재에 회전력을 제공하며, 제 1 방향으로 회전하는 회전축이 구비되는 구동부; 상기 회전축과 결합되며, 제 2 방향으로 회전되는 제 1 동력 전달부; 및 상기 제 1 동력 전달부에 분리 가능하게 결합되며, 상기 제 1 동력 전달부의 동력을 상기 파쇄부재에 전달하는 제 2 동력 전달부가 포함된다. 
본 실시예에 따른 냉장고에 의하면, 아이스 뱅크의 폭방향에 대하여 동력전달 요소들이 차지하는 부피가 줄어들 수 있게 되므로, 상대적으로 얼음을 저장하는 저장 공간은 크게 확보될 수 있다는 효과가 있다.
Patent KR-20100101538-A (KR)
Title: Power generation system and inverter for feeding power into a three-phase grid
Inventor: PRIOR OLIVER
IPC: H02M7/48
Filed: 2010-03-08
Abstract: PURPOSE: A power generation system and an inverter thereof are provided to supply power to a three-phase grid by connecting three AC terminals to a grid through a first and a second switching contact. CONSTITUTION: A power generation system comprises a relay arrangement. A relay arrangement separates an electric power system from a grid. The relay arrangement comprises at least three relays(R1~R3). Each relay has a control coil and two switching contacts. Two switching contacts are operated with the control coil. Three AC terminals are connected to the grid through two switching contacts.
Patent KR-20100103391-A (KR)
Title: Interconnector for a high-temperature solid electrolyte fuel cell
Inventor: BRANDNER MARCO
IPC: H01M50/529
Filed: 2010-03-11
Abstract: PURPOSE: An interconnector for a solid electrolyte fuel cell is provided to secure the high gas impermeability, corrosion resistance, and electric conductivity on a contacting area of an anode and a cathode. CONSTITUTION: An interconnector for a solid electrolyte fuel cell is formed with a sintered chrome alloy including more than 90wt% of Cr, 3~8wt% of Fe, and 0.001~2wt% of element selected from a rare earth metal group. The sintered chrome alloy contains 0.1~2wt% of Al. The interconnector includes sintered micro pores. The sintered micro pores are filled with an 'oxide compound containing the Al and the Cr.
Patent KR-20110105675-A (KR)
Inventor: HONG SANG HEE
IPC: G01M99/00
Filed: 2010-03-19
Abstract: 본 발명은 높은 내열성과 열전도성이 요구되는 소재의 개발 및 평가에 사용되는 고열부하 시험 장치와 그 운전방법에 관한 것으로, 전기에너지를 이용하여 대열용량을 집중하여 인가시킬 수 있는 플라즈마 토치와 피시험물을 장착하여 냉각시킬 수 있는 시편장착대를 기본 구성으로 하여 고안되었으며, 플라즈마 토치의 열출력과, 토치와 피시험물 간의 간격인 인가거리를 변화시켜 운전함으로서, 개발된 소재의 시험시에 선택적으로 요구되는 특정한 열부하가 인가될 수 있도록 하였다.
Patent KR-20110106109-A (KR)
Inventor: LEE HYO SANG
IPC: E02D29/14
Filed: 2010-03-22
Abstract: 본 발명은 잠금 기능을 구현하는 잠금 장치 및 이를 이용하는 맨홀에 관한 것이다. 상기 맨홀은  바디부 및 상기 바디부로부터 교차하는 방향으로 배열된 지지부를 가지는 맨홀 본체, 상기 맨홀 본체의 지지부 위에 놓이는 맨홀 덮개 및 상기 맨홀 덮개의 홀로 삽입되는 몸체부, 상기 바디부의 제 1 홈으로 삽입되거나 상기 지지부의 하부면에 밀착하여 상기 맨홀을 잠그는 제 1 잠금부 및 상기 몸체부와 상기 제 1 잠금부를 연결하는 제 1 연결부를 가지는 잠금 장치를 포함한다. 여기서, 상기 몸체부가 상부 방향 또는 하부 방향으로 움직임에 따라 상기 제 1 잠금부의 상태가 변화되어 상기 맨홀이 잠기거나 잠금 상태가 해제되며, 상기 제 1 잠금부의 적어도 일부에 제 1 영구자석이 형성된다.
Patent KR-20110116312-A (KR)
Inventor: RYU WANG SOO
IPC: E04B2/74
Filed: 2010-04-19
Abstract: 본 발명은 파티션벨트 내부에 배선과 배선기구를 감추고 작업 및 인출, 인입을 편리하게 수행할 수 있는 파티션벨트에 관한 것이다.. 
본 발명에 따르면, 사무실 등에 설치되는 파티션벨트 내부에 각종 배선과 배선기구 등을 설치하여 책상 위의 복잡한 배선들을 파티션벨트 내부로 인입하고, 파티션 벨트에 덮개(210)를 설치하여 파티션 내부에 인입된 배선기구 및 배선의 관리를 용이하게 하는 파티션 벨트에 있어서, 파티션(100) 내부에 배선가이드(110), 배선기구 거치대(120)와, 내부배선홈(140)이 구비된 배선홈판(130)이 설치되고, 파티션 벨트 덮개(210)에는 내부배선홈(140)에 대응하는 덮개배선홈(220)을 설치되는 것을 특징으로 하는 파티션 벨트가 제공된다.
Patent KR-20110116660-A (KR)
Inventor: KIM SUN ILL
IPC: H04R25/00
Filed: 2010-04-20
Abstract: 본 발명은 궤환 신호 제거 시스템, 방법 및 이를 이용한 보청기를 개시한다. 본 발명에 따른 보청기는 다른 귀에 장착된 보청기와 통신하여 궤환 신호를 제거하는 보청기로서, 마이크로폰; 상기 마이크로폰을 통해 입력된 제1 신호를 처리하는 신호 처리부; 상기 다른 귀에 장착된 보청기(제2 보청기)로부터 제2 신호를 수신하는 통신부; 및 상기 제1 신호에 상기 궤환 신호가 포함된 경우, 상기 신호 처리부가 상기 제1 신호 대신 상기 제2 신호를 처리하도록 제어하는 제어부를 포함한다.
Patent KR-20110117749-A (KR)
Inventor: HONG SEOK IN
IPC: A01G31/02
Filed: 2010-04-22
Abstract: 본 발명은 어느 일 측면이 개방되는 박스와, 상기 박스 내부에 위치하고 상부 고정판과 하부 고정판에 의하여 씨앗이 수용될 수 있는 복수 개의 공간이 형성된 씨앗 고정판 및 상부 고정판과 하부 고정판 사이에 형성되는 컷팅부로 구성되어 소비자가 신선한 새싹을 직접 채취하여 섭취할 수 있을 뿐 아니라 뿌리의 제거가 간편하여 바로 새싹을 섭취할 수 있는 새싹 재배기에 관한 것이다.
Patent KR-20100046132-A (KR)
Title: Devices for managing points(or mileges) by using rfid tag
Inventor: KIM JAE HYUNG
IPC: G06Q30/02
Filed: 2010-04-26
Abstract: PURPOSE: A device for operating a point and a mileage using a wireless recognition tag is provided to automatically reserve points or mileages correspondign to product buying. CONSTITUTION: An information receiving unit(105) receives RFID information by connecting with a wireless customer terminal receiving RFID information from a wireless recognition tag. An information checking unit(115) checks point or mileage information corresponding to the received RFID information by connecting a storage medium for storing at least one RFID information and point or mileage value information corresponding to the RFID information. An information storage unit(125) connects the checked point or mileage value information with number information of the wireless customer terminal.
Patent KR-20110131664-A (KR)
Title: Method for electromagnetic fiber using ferroelectrics
Inventor: KIM JOO YONG
IPC: D01F8/04
Filed: 2010-05-31
Abstract: PURPOSE: A manufacturing method of electromagnetic fiber using ferroelectrics is provided to improve the filtering efficiency of a filter in case of using for an air filter. CONSTITUTION: A manufacturing method of electromagnetic fiber comprises: a step of manufacturing electrospinning solution by dispersing 0.1-2.0wt% barium titanate on fiber-forming solution, which is the mixture of polyethylene oxide and deionized water solvent; and a step of electrospinning the solution. An electrospinning apparatus comprises a voltage supply device(11), a spinneret(12) connected to the voltage supply device and impressing 5-20kV voltage, and a collector(13) collecting nanofiber emitted from the spinneret.