baber/WOPTO huggingface dataset:
Patent KR-20120073874-A (KR)
Title: Power monitoring method of security light and street light using led
Inventor: HWANG HWA JA
IPC: H05B37/02
Filed: 2010-12-27
Abstract: PURPOSE: A security light which uses an LED and a power monitoring method of a street light are provided to reduce costs required for maintenance by outputting a failure signal to a control center. CONSTITUTION: An output in regard to a voltage is detected from an SMPS(Switching Mode Power Supply)(S100). The SMPS is included on each security light or a street light. The SMPS supplies a power source to an LED. Whether the output is in a range of the predetermined value or not is checked(S200). A failure signal of the security light or the street light is outputted to a control center by using a wire transmitting and receiving module or a wireless transmitting and receiving module when the output gets out of the range of the predetermined value.
Patent KR-20120074979-A (KR)
Title: A protection cap for complex probe
Inventor: KIM HYO SANG
IPC: G01D11/00
Filed: 2010-12-28
Abstract: PURPOSE: A paper cup for a probe is provided to prevent slag on the top of a molten metal from being coated on a metal cap among protective caps for a probe and to efficiently component contamination of the molten metal caused by papers. CONSTITUTION: A paper cup for a probe is composed of a metal cap and a paper cap(20). The metal cap protects a sensing unit of a probe becoming dipped in order to measure a temperature and components of a molten metal. The paper cap covers the metal cap. The paper cap has a porous layer structure(22). The lower part of the paper cap is a layered structure(21) and the upper part of the paper cap is a dual structure of the porous layer structure.
Patent KR-20120076163-A (KR)
Title: Hermetic compressor
Inventor: LEE KANG WOOK
IPC: F04C29/02
Filed: 2010-12-29
Abstract: PURPOSE: A hermetic compressor is provided to prevent coolant leakage by reducing the connecting portions while assembling an accumulator by unifying the assembling processes of an accumulator and a shell. CONSTITUTION: A hermetic compressor comprises a cylinder(410), a bearing plate, a fixed spindle, a rolling vein(440), and an accumulator(500). The cylinder is coupled with the rotor(220) and rotated with the rotor. The bearing plate is rotated with the cylinder and coupled with the same. The fixed spindle is fixed in the inner space of a shell. The fixed spindle comprises an axis equal to the rotation axis of the cylinder. The rolling vein is installed between the cylinder and an eccentric portion. The rolling vein compresses coolant according to the rotation of the cylinder. The accumulator is fixed in the sixed spindle. The accumulator comprises accumulating space(501) for the connection of a coolant inlet passage(301) of the fixed spindle.
Patent KR-20120077214-A (KR)
Title: Method of providing a contents service in a p2p network
Inventor: HAN SEUNG CHUL
IPC: G06F3/06
Filed: 2010-12-30
Abstract: PURPOSE: A content service providing method on a p2p network is provided to reduce the load of a membership server as the membership server is not checked one by one for user authentication. CONSTITUTION: Content information is requested to a membership server(S300). According to the request, the first ticket information is obtained from the membership server(S302). According to first ticket information, content is requested to the second peer. The first ticket information has information about the first peer, a file name and an offset in a file. When the first ticket information is transmitted to the first peer, the first ticket information is encoded to a secret key between the membership server and the second peer.
Patent KR-20120016570-A (KR)
Title: Differential column adc architectures for cmos image sensor applications
Inventor: LEE SANG SOO
IPC: H03M1/12
Filed: 2010-12-31
Abstract: PURPOSE: A differential column ADC(Analog to Digital Converter) architecture for a CMOS image sensor application is provided to eliminate a low-wise noise source or a column-wise noise source. CONSTITUTION: A crossover detection sub system is electrically connected to a differential sampling sub system. If a ramp signal level is changed in a second differential input node while a ramp reset level of a first differential input node is maintained, at least one output of a gain stage detects crossover time during a third operation state. The crossover detection sub system outputs a digital code corresponding to the crossover time.
Patent KR-20100090237-A (KR)
Inventor: FUJIO AKIHIRO
IPC: B29C44/42
Filed: 2009-01-14
Abstract: 발포제로서의 압축 또는 액화된 불활성 가스의 공급과 발포기의 동작의 연동화를 가능하게 한 프로스법 경질 폴리우레탄폼의 제조 장치를 제공한다. 발포제로서 불활성 가스를 정량 공급하는 발포제 공급 수단과, 불활성 가스와 포리올 조성물을 혼합해서 발포 포리올 조성물로 한 후, 발포 포리올 조성물과 폴리이소시아네이트 성분을 혼합해서 경질 폴리우레탄폼을 토출하는 발포 수단을 구비하는 프로스법 경질 폴리우레탄폼의 제조 장치에 있어서, 발포제 공급 수단은, 불활성 가스의 압력을 감압 조정하는 감압 밸브와, 불활성 가스의 유량을 조정하는 니들 밸브를 가지며, 발포 수단은 포리올 조성물을 압축해서 공급하기 위한 압축용 실린더를 가지고 있으며, 발포 수단과 발포제 공급 수단의 사이에는 불활성 가스의 발포 수단으로의 공급을 조절하는 조절 수단이 설치되고, 조절 수단에는 압축용 실린더의 동작을 감지해서 조절 수단을 제어하는 제어 수단이 접속되어 있다.
Patent KR-20100012100-A (KR)
Title: Precoated metal plate and process for producing precoated metal plate
Inventor: FURUKAWA HIROYASU
IPC: B05D7/14
Filed: 2005-12-05
Abstract: This invention provides a precoated metal plate that is improved in color shading prevention and adhesion and is produced by simultaneous multilayer coating. In the precoated metal plate, the center line average roughness Ra in the coating film interface is not less than 0.3 μm, and the maximum height from the waviness center line in the interface is not more than 50% of the layer thickness. There are also provided a top clear coated metal plate, which comprises a clear layer as an upper layer, has an interfacial center line average roughness Ra of 0.3 to 0.7 μm and has excellent weathering resistance, a precoated metal plate having excellent processability and corrosion resistance, which contains not less than 30% by mass on average of a rust preventive pigment so that the average rust preventive content of the upper layer is lower than that in the average rust preventive pigment of the lower layer, the concentration gradient is lowered so that the position from around the interface of the upper layer and the lower layer is increased, and the roughness Ra in the interface of the lower layer and the upper layer is 0.3 to 0.7 μm, and a process for producing the same.
Patent KR-20100043048-A (KR)
Title: Multilayer board surface-treated configuration and the producing method thereof
Inventor: YANG CHIH KUANG
IPC: H05K3/34
Filed: 2007-06-15
Abstract: A configuration of the surface-treated multilayer board comprises a pad, at least a cover metal layer and a solder mask. The pad has been set in the dielectric layer. The cover metal layer is applied for covering the pad, and the solder mask has an opening for exposing the cover metal layer. The producing method thereof is performed by firstly forming the cover metal layer onto the surface of the pad, and secondly forming the solder mask, then thirdly opening the solder mask at the portion of the cover metal layer for exposing the cover metal layer. As the pad of being set in the dielectric layer, the adhesion between the pad and the dielectric layer increases. At the same time because the solder mask covers part of the cover metal layer, it can be avoided of the contact between the tin material or the other solder and the pad while encapsulation.
Patent KR-20100065286-A (KR)
Title: Vaporizer, material gas supply system including vaporizer and film forming apparatus using such system
Inventor: TANAKA SUMI
IPC: C23C16/448
Filed: 2008-08-22
Abstract: Provided is a vaporizer which has a simple structure with improved thermal efficiency. A vaporizer (8) is provided with a nozzle unit (72) for jetting a liquid material in a mist state; a vaporizing unit (76) having a plurality of vaporizing paths (74) which vaporize the material mist and form a material gas; and an ejection head (78) for sending the material gas to the subsequent stages. The vaporizing unit is provided with a vaporizing unit main body (108) wherein the vaporizing paths are formed; a main body container (110) for storing the vaporizing unit main body (108); a heater (112) for heating the material mist passing through the vaporizing paths; and connecting members (114, 116) arranged on the both end sections of the main body container. The vaporizing unit main body and the main body container are composed of a material having thermal conductivity higher than that of the material constituting the connecting members. The end sections of the main body container and the connecting members are bonded by explosion bonding.
Patent KR-20100075448-A (KR)
Title: Method for making a dental prosthesis and related surgical guide
Inventor: DE MOYER PHILIPPE ALBERT PAUL GHISLAIN
IPC: A61C13/34
Filed: 2008-08-21
Abstract: The invention relates to a method for making dental prostheses and related surgical guides, that comprises making the prosthesis and/or the surgical guide based on a model that reproduces the bone portions of the jaw using a first material and the mucosa portions of the jaw using a second material softer than the first material, and made on the basis of a computer modelling of the mucosa portions and the bone portions of the jaw by radiographic data differentiation. The invention also relates to the individualised production in a single piece of one or more implants for such a dental prosthesis that comprises machining rods or studs of a biocompatible material. The invention further relates to a ready-to-use individualised kit for placing a dental prosthesis, that comprises this type of prosthesis, this type of surgical guide and/or one or more implants of this type, as well as screwing keys for placing the implants and optionally suitable drills.
Patent KR-20100084632-A (KR)
Title: Transmission error dissimulation in a digital signal with complexity distribution
Inventor: KOVESI BALAZS
IPC: H04N19/895
Filed: 2008-09-19
Abstract: The invention relates to a method for dissimulating a transmission error in a digital signal divided into a plurality of successive frames associated with different time intervals, in which the signal, upon reception, may contain erased frames and valid frames, and that comprises carrying out at least two steps in order to replace at least the first erased frame (N) after a valid frame, i.e. a first preparation step (E1) that does not generate any missing sample and that comprises at least analysing a valid decoded signal, and a second dissimulation step (E2) that generates the missing samples of the signal corresponding to said erased frame. The first step and the second step are carried out in different time intervals. The invention also relates to a dissimulation device implementing the method of the invention, and to a decoder including such a device. The invention can be used for distributing the complexity of the error dissimulation over different time intervals.
Patent KR-20100072282-A (KR)
Title: Systems and methods for managing advertising content corresponding to streaming media content
Inventor: OTA TAKAAKI
IPC: G06F3/00
Filed: 2008-09-18
Abstract: A media server is accessed by a user device over a network. Advertising content is automatically received from the server and stored by the user device, where the advertising content is associated with streaming media content. Following a request for the streaming media content, at least a portion of the received advertising content is presented on the user device while the requested streaming media content begins to be downloaded or queued. As soon as presentation of the advertising content concludes, the requested streaming media content is presented on the user device without network-related delay.
Patent KR-20100075985-A (KR)
Title: Use and production of neutral metallproteases in a serine protease-free background
Inventor: LEE EDWIN
IPC: C12N15/56
Filed: 2008-10-06
Abstract: The present invention provides methods and compositions comprising at least one neutral metalloprotease enzyme in the relative absence of serine protease enzyme contaminants. In some embodiments, the neutral metalloprotease finds use in cleaning and other applications. In some particularly preferred embodiments, the present invention provides methods and compositions comprising Bacillus strains engineered to be deficient in multiple serine proteases, and their use in production of recombinant neutral metalloprotease.
Patent KR-20100077002-A (KR)
Title: Flexible grip and method of making same
Inventor: GILL DAVID KEITH
IPC: A63B53/14
Filed: 2008-10-03
Abstract: A flexible grip for an implement handle and method of making same in which the grip is molded with a core or mandrel having a spiral groove which forms a thread like surface on the interior of the grip when molded. Upon removal from the mold, the core may be easily removed by relative rotation of the core and grip one with respect to the other.
Patent KR-20100103794-A (KR)
Inventor: FRICKE SABINE
IPC: A61K31/565
Filed: 2008-10-22
Abstract: 본 발명은 에스트로겐, 예를 들어 에티닐에스트라디올, 17β-에스트라디올 또는 에스트라디올 발레레이트 및 1종 이상의 제약상 허용되는 부형제/담체와 조합된 게스타겐, 바람직하게는 디에노게스트, 클로르마디논 아세테이트 또는 레보노르게스트렐에 관한 것으로, 이들은 무-락토스의 경구 피임약을 구성한다.  본 발명은 가능성 있는 기여 인자로서, 그리고 고가의 락토스 불내성 검사와 관련하여, 락토스 불내성의 예방을 개선시킬 가능성을 제시한다.  본 발명은 또한 장기적인 사용에도 적합할 수 있다.
Patent KR-20100105621-A (KR)
Title: Coaxial plug connector with a coded housing
Inventor: BLAKBORN WILLEM
IPC: H01R13/646
Filed: 2008-12-04
Abstract: The invention relates to a co-axial plug-in-insertion connector which has a center conductor part, an outer conductor part, and an insulating part made of a dielectric material which holds the center conductor part co-axial to the outer conductor part, a coding housing being provided in which the outer conductor part and the center conductor part are arranged, the co-axial plug-in-insertion connector having an insertion end for connection to a complementary co-axial plug-in-insertion connector. Provision is made for the insulating part to be of a one-piece form with the housing.
Patent KR-20100110817-A (KR)
Inventor: HYDE RODERICK A
IPC: H04L12/12
Filed: 2008-12-17
Abstract: 본 발명에 따르면, 수송수단에서 엔진을 제어하기 위한 방법 및 제어 시스템은, 엔진의 작동 중에 수송수단 파라메타의 변경을 위한 명령을 포함하는 제어 신호를 수송수단에 발신하는 것을 포함한다.
Patent KR-20100116212-A (KR)
Inventor: ROBINSON RONNI L
IPC: A61H23/00
Filed: 2009-02-24
Abstract: 본 발명은 벨트와 같은 재사용 가능한 통증 완화 처치 장치와, 하나 이상의 열 전도성 부재를 갖는 일회용 열 장치에 관한 것으로, 열 전도성 부재는 장치의 표면으로부터 연장하며, 일회용 또는 재사용 가능한 장치로부터의 열기, 냉기, 또는 진동을 사용자 신체의 목표 부위로 전달할 수 있다.
Patent KR-20100114936-A (KR)
Inventor: MIGITA YASUSHI
IPC: H01L21/683
Filed: 2009-02-26
Abstract: 균열성이 양호한 웨이퍼 지지부를 제공한다. 그 웨이퍼 지지 부재는 기체와, 절연체와, 기체와 절연체를 접합하는 접합층을 구비한 웨이퍼 지지 부재이고, 접합층은 제 1 층과 상기 제 1 층보다 절연체측에 위치하는 제 2 층을 포함하는 복수 층의 적층 구조이며, 제 1 층과 상기 제 2 층의 두께가 다르다.
Patent KR-20110123198-A (KR)
Inventor: MA ZHENGXIANG
IPC: H04W16/18
Filed: 2009-02-27
Abstract: 빌딩내 무선 통신 네트워크에서, 2개의 관련된 기지국 인터페이스들(BSIs)로부터의 다운링크 신호의 가중된 합은 2개의 섹터들간을 천이하는 라디오 트랜시버에 의해 송신된다. 천이 기간 동안, 조합된 다운링크 신호의 가중치는 섹터들의 커버리지에서 원할한 이동을 시뮬레이트하기 위해 점차적으로 조절되고 제 1 섹터로부터 제 2 섹터로 라디오 트랜시버를 천이한다. 이것은 서비스의 임의의 두절을 억제하면서 기지국이 사용자들을 제 1 섹터로부터 제 2 섹터로 핸드 오버(hand over)할 수 있게 한다.
Patent KR-20100133995-A (KR)
Inventor: UMEMOTO TORU
IPC: C08J7/04
Filed: 2009-02-04
Abstract: 술폰산기를 포함하는 유기 색소를 함유하는 유기 박막에 다가 금속염 또는 아미노 화합물염을 함유하는 용액을 도포하여 내수성 유기 박막을 얻는 방법이 알려져 있다.     아미노 화합물염을 함유하는 용액은, 다가 금속염을 함유하는 용액보다 독성이 낮아, 취급성이 우수하다.     그러나, 아미노 화합물염을 사용하여 얻어지는 유기 박막의 내수성은, 다가 금속염을 사용한 것에 비해 훨씬 낮아 편광막 용도에 필요한 수준을 만족시키지 못했다.     아니온성기를 갖는 유기 색소를 함유하는 편광막의 표면에 카티온성 폴리머를 함유하는 액체를 접촉시킴으로써, 내수성이 종래보다 현격히 우수한 편광막을 얻을 수 있다.
Patent KR-20100119580-A (KR)
Title: Debris mitigation device with rotating foil trap and drive assembly
Inventor: DERRA GUENTHER HANS
IPC: G21K1/04
Filed: 2009-02-25
Abstract: The present invention relates to a debris mitigation device for use with a radiation source (2) generating optical radiation, in particular extreme ultraviolet radiation (EUV) or soft x-rays, and emitting undesired substances and/or particles which can deposit on optical surfaces in a radiation path of said radiation source (2), and to a corresponding drive assembly. The debris mitigation device comprises at least one rotating foil trap (5) and the drive assembly. The drive assembly comprises a driving motor (14) and a driving axis (10), to which the rotating foil trap (5) is fixed. The driving motor (14) and bearings (13) supporting the driving axis (10) are enclosed in a casing (20) having an aperture for the driving axis (10) and at least one outlet opening (21) for a sealing gas. The outlet opening (21) is connectable to a pump for pumping out the sealing gas. The aperture is designed to define a gap (23) between the driving axis (10) and the casing (20), wherein said gap (23) is connected to a supply pipe (19) for supplying the sealing gas through said gap (23) into said casing (20). The proposed debris mitigation device allows the use of conventional driving motors and oiled or lubricated bearings without the risk of contamination of the vacuum chamber in which the debris mitigation device is used. This results in an enhanced service life of the driving assembly.
Patent KR-20100127810-A (KR)
Inventor: AKASHI MASAYA
IPC: B01J31/24
Filed: 2009-04-03
Abstract: 본 발명은 카르보닐 화합물의 부제 환원 촉매로서 유용한 신규 루테늄 화합물을 제공한다.     본 발명의 루테늄 화합물은 식 (I) (Ru(X) 2 (Pxx)[R 1 R 2 C(NH 2 )-R 3 R 4 C(NH 2 )]	(I)) 로 나타내는 루테늄 화합물로서, 당해 화합물을 부제 환원 촉매로서 사용하면, α-아미노케톤 화합물, 특히 식 (Ⅳ)  
   
로 나타내는 화합물로부터 광학 활성 아미노알코올 화합물을 고입체 선택적이면서 또한 고수율로 제조할 수 있다.
Patent KR-20110014974-A (KR)
Inventor: PATEL NILESHKUMAR SURESHBHAI
IPC: C07D489/02
Filed: 2009-03-23
Abstract: 본 발명은 하기 화학식(1)의 모르피난 유사체의 개선된 제조 방법에 관한 것이다: 
  (1)  
식 중에서, 치환기 R 1 , R 2 , R 2a , R 3 , R 4 , R 5  및 Y는 명세서에 정의된 바와 같은 의미를 갖는다.
Patent KR-20100129764-A (KR)
Inventor: COWARD CHRISTOPHER GUY
IPC: A61M37/00
Filed: 2009-03-13
Abstract: 감압 치료 시스템은 사용자의 발 아래에 위치가능하며 팽창 상태와 압축 상태 사이에서 이동가능한 압축성 챔버를 포함한다.  압축성 챔버는 주입구 및 배출구를 포함한다.  주입구 밸브는 압축성 챔버 내의 유체가 주입구를 통해 배출되는 것을 방지하도록 주입구와 유체를 교환하고, 배출구 밸브는 유체가 배출구를 통해 압축성 챔버로 유입되는 것을 방지하도록 배출구와 유체를 교환한다.  편향 부재는 압축성 챔버를 팽창 상태로 편향시키도록 압축성 챔버 내에 배치되고, 매니폴드는 조직 부위에 위치가능하며 압축성 챔버의 주입구와 유체를 교환한다.
Patent KR-20100122126-A (KR)
Inventor: LAROIA RAJIV
IPC: H04W88/04
Filed: 2007-01-11
Abstract: 무선 단말기는, 기지국이 네트워크 액세스 노드로서 기능하는지 또는 주파수 대역에 대해 P2P 모드로 기능하는지에 대하여 원하는 기지국 동작 모드를 결정하고, 기지국으로 변경 신호를 통신한다.     일부 변경 신호들은 기지국이 스펙트럼 사용을 동적으로 재할당하도록 요구하는 요구 신호들인 반면, 다른 변경 신호들은 기지국에 스펙트럼 사용을 재할당하도록 명령하는 커맨드 신호들이다.     몇몇 실시형태들에서, 변경 신호들에 대응하는 권한의 레벨을 표시하는 정보는 디바이스 식별자, 사용자 식별자 및 우선순위 레벨 인디케이터 중 하나에 대응한다.     예시적인 커맨드 신호는 스펙트럼 사용을 오버라이드하는 권한을 갖는 정부 관리에 의해 사용된 디바이스로부터 온다.
Patent KR-20110005269-A (KR)
Inventor: TOYAMA YUUSUKE
IPC: C09J7/22
Filed: 2010-04-27
Abstract: 본 발명의 광학 필름용 점착제 조성물은, (메트)아크릴계 중합체 (A), 및 폴리에테르 골격을 갖고, 또한 적어도 1개의 말단에, 화학식 1로 나타내어지는 반응성 실릴기를 갖는 폴리에테르 화합물 (B)를 함유하는 것을 특징으로 한다.  본 발명의 광학 필름용 점착제 조성물은, 액정 패널 등으로부터 풀 남음이 없이 광학 필름을 용이하게 박리할 수 있는 리워크성, 및 광학 필름을 접합한 상태에서는 박리나 들뜸 등을 발생시키지 않는 내구성을 만족할 수 있는 점착제층을 형성할 수 있다. 
<화학식 1> 
   
식 중, R은 치환기를 가져도 되는 탄소수 1 내지 20의 1가의 유기기이며, M은 수산기 또는 가수분해성 기이며, a는 1 내지 3의 정수이다.  단, R이 복수 존재할 때 복수의 R은 서로 동일해도 좋고 상이해도 좋고, M이 복수 존재할 때 복수의 M은 서로 동일해도 좋고 상이해도 좋다.
Patent KR-20110016926-A (KR)
Title: Apparatus and method for transmission opportunity in mesh network
Inventor: SEOK YONG HO
IPC: H04L12/28
Filed: 2009-05-08
Abstract: PURPOSE: A transmission opportunity transmission device of mesh network and a method thereof for reducing collision between a beacon frame and data are provided to determine the transmission opportunity for reducing the collision in mesh network. CONSTITUTION: A processor(51) is connected with a transceiver(53). The processor receives beacon timing received from a reception MP(Mesh Point). The Beacon timing includes the beacon reception time of the received beacon frame. The processor determines the transmission opportunity at the beacon reception time. The processor transmits a frame within the transmission opportunity.
Patent KR-20110081094-A (KR)
Title: Dual-feed dual band antenna assembly and associated method
Inventor: WANG DONG
IPC: H01Q5/10
Filed: 2011-01-06
Abstract: PURPOSE: A dual-feed dual band antenna assembly and the correlating method are provided to accomplish the separation of the high cross-over port by keeping the strict form factor. CONSTITUTION: A User Equipment(100) comprises the arbitrary mobile communications device performing multiband and/or the access technique the wireless telecommunication. A DFDB(dual-feed dual band) antenna assembly(102) comprises a first feed port or a point(104A) connected to a first transceiver circuit(106-1) acting in the first band. A second feed port or the point(104B) is connected to a second transceiver circuit which is adapted in order to act in the same first band. A second transceiver circuit(106-2) comprises the circuit for the WiFi which is adapted in order to act in 2.4GHz band. A receiver circuit(106-3) comprises the GPS circuit connected to the second feed port.
Patent KR-20120080073-A (KR)
Title: One chip structure of battery protection circuits
Inventor: NA HYEOK HWI
IPC: H01M10/44
Filed: 2011-01-06
Abstract: PURPOSE: An integrated chip structure of a battery protection circuit is provided to reduce an entire size by arranging a partial resistance and a capacitor in inside. CONSTITUTION: A dual FET(Field Effect Transistor) chip(110) comprises a first FET and a second FET of a common drain structure. A protection IC(Integrated Circuit)(120) senses an over discharge state in the discharge of a battery and stops a discharge motion of the battery by controlling the first FET in the over discharge. The protection IC is laminated on a part of the upper side of the dual FET ship. Capacitors(C1, C2, C3) are formed into a structure interlinking source and drain electrodes. The capacitors are laminated on the upper side of the dual FET chip.
Patent KR-20120086828-A (KR)
Title: piano with piezoelectric element for children
Inventor: PARK YOU JIN
IPC: G10C3/12
Filed: 2011-01-27
Abstract: PURPOSE: An educational keyboard musical instrument by a piezoelectric element is provided to install colorful LEDs and piezoelectric elements under a light transmissive keyboard, thereby increasing education effects. CONSTITUTION: A piezoelectric element is placed under a keyboard of a keyboard musical instrument. A second LED(Light Emitting Diode)(33) is formed on the outside of the keyboard musical instrument. Light of an LED is spread out by installing a reflective mirror(32) on a side opposite to the second LED. The eye sight of a user is protected by installing an eye sight protecting layer(31) around the second LED.
Patent KR-20120088230-A (KR)
Title: Preparing method of activated graphite for high efficient hydrogen storage
Inventor: PARK SOO JIN
IPC: C01B3/00
Filed: 2011-01-31
Abstract: PURPOSE: A method of manufacturing active graphite powder for efficiently storing hydrogen is provided to reform the interlayer structure of graphite powder by implementing a gas activation operation based on carbon dioxide gas. CONSTITUTION: Graphite powder is washed. The washed graphite powder is impregnated in an acid solution to obtain oxidized graphite composite. The oxidized graphite composite undergoes a gas activation operation by introducing slippery gas into a tubular furnace under inert gas. The graphite powder is one or more selected from natural crystalline graphite, artificial graphite, amorphous graphite, activated carbon, activated carbon fiber, pitch-based nano-fiber, and carbon nanotubes. The temperature of the gas activation operation is in a range between 200 and 600 degrees Celsius, and the time of the gas activation operation is between 5 and 100 minutes.