baber/WOPTO huggingface dataset:
Patent KR-20030050464-A (KR)
Title: A Management of Fault Information in Telecommunication Network
Inventor: KIM TAE WAN
IPC: H04L12/24
Filed: 2001-12-18
Abstract: PURPOSE: A system and method for managing failure information in a communication network is provided to automatically detect communication failure between an agent and a manager and automatically restore a failure information error. CONSTITUTION: A communication device(100) having communication equipments performs a communication and reports a failure to an agent(200). The agent(200) receives the failure from the communication device(100), converts it into a failure message form and continuously reports it to a manager(300). The manager(300) processes the failure message. A failure receiver(310) receives the failure message from the agent(200). A failure processor(320) processes the failure message appropriately. A failure storing unit(330) stores the pressed failure message. A failure reporter(340) reports the processed failure to an operator's computer(400). A reception state monitor(350) monitors a communication failure with respect to the agent(200). A failure restoring unit(360) automatically restores failure information with error due to failure message loss caused by a communication failure. A restored information storing unit(380) stores the failure for a predetermined period after the communication state is normally restored for a failure restoration.
Patent KR-20030050586-A (KR)
Title: Door lock system and method using a bar code displayed on a mobile phone
Inventor: JUNG BO GO
IPC: H04Q9/00
Filed: 2001-12-19
Abstract: PURPOSE: A system for locking a door by a bar code displayed on a mobile communication terminal and a method for opening the door thereby are provided to easily open a door locking device by displaying the bar code of the door on the mobile communication terminal and opening the door. CONSTITUTION: If a user selects a door opening function(S310), a control unit displays a password input picture on a display unit and receives a password from the user(S320). If the user inputs the password, the control unit checks over whether the inputted password is identical to a password stored in a memory(S330). If the inputted password is identical to the password stored in the memory, the control unit displays a door selection picture on the display unit so that it is possible for the user to select a door(S340). If the user selects the door, the control unit reads a door opening code corresponding to the selected door from the memory, converts the door opening code into a bar code, and displays the converted bar code on the display unit(S350).
Patent KR-20030056440-A (KR)
Inventor: KIM YEONG HWAN
IPC: F16F9/36
Filed: 2001-12-28
Abstract: PURPOSE: A rotary viscous damper is provided to reduce vibration with viscous fluid passing a slot of a flow control plate by pressurizing bellows in rotating a rotor and to use damping torque selectively by adjusting a size of the slot with a flow control bolt. CONSTITUTION: A rotary viscous damper has a damper housing(10); two bellows(30); a flow control plate(40); rotor(50) and a damper cover(20). The damper housing is filled with viscous fluid inside. The bellows is stored in the damper housing and filled with viscous fluid. One side of the bellows is opened and the other side is closed. The flow control plate is fixed inside the damper housing with clamping bolts. A slot(45) is formed to a middle portion of the flow control plate by penetrating from right to left. Opened sides of the bellows are connected to both sides of the slot with a bellows connecting tool. The rotor is mounted inside the damper housing and supported by a bearing on both shafts. A moving portion is protruded from a side of the rotor. Closed sides of the bellows are faced to both surfaces of the moving portion. The damper cover seals the damper housing by including an O-ring and an oil seal to prevent viscous fluid of the damper housing from leaking. Thereby, vibration of a flexible joint of a robot arm damps effectively.
Patent KR-20030057727-A (KR)
Title: Burst Length Controller and the Method thereof in Semiconductor Memory Device
Inventor: CHOI BYEONG JIN
IPC: G11C11/4096
Filed: 2001-12-29
Abstract: PURPOSE: A burst length control circuit of a semiconductor memory device and a method for the same are provided to simplify the circuit configuration of the chip by using only one burst length control circuit during the design of the single data rate/double data rate(SDR/DDR) mixed chip. CONSTITUTION: A burst length control circuit of a semiconductor memory device includes 7 number of switches(TM1-TM7), 4 number of nodes(N1-N4) and an inverter(INV). In the burst length control circuit of the semiconductor memory device, the first switch(TM1) transmits the first burst length signal to the first node(N1) in response to the input of the SDR/DDR discrimination signal, the second switch(TM2) transmits the second burst length signal to the second node(N2) in response to the SDR/DDR discrimination signal, the third switch(TM3) transmits the third burst length signal to the second node(N2) in response to the input of the SDR/DDR discrimination signal, the fourth switch(TM4) transmits the third burst length signal to the second node(N2) in response to the SDR/DDR discrimination signal, the fifth switch(TM5) transmits the third burst length signal to the third node(N4) in response to the input of the SDR/DDR discrimination signal, a sixth switch(TM6) transmits the fourth burst length signal to the third node(N3) in response to the SDR/DDR discrimination signal and the seventh switch(TM7) transmits the fourth burst length signal to the fourth node(N4) in response to the input of the SDR/DDR discrimination signal.
Patent KR-20030058417-A (KR)
Title: METHOD FOR ADJUSTING EMISSION WAVELENGTH FROM InGaAs QUANTUM DOTS BY AlGaAs INSERTION LAYER
Inventor: CHOI WON JUN
IPC: H01S5/30
Filed: 2001-12-31
Abstract: PURPOSE: A method for adjusting a radiation wavelength of an InGaAs quantum dot by an AlGaAs insertion layer is provided, which obtains a long wavelength photo luminescence by growing a thin AlGaAs insertion layer after forming the InGaAs quantum dot. CONSTITUTION: According to the method for adjusting a radiation wavelength radiated from an InGaAs/GaAs quantum dot, the InGaAs/GaAs quantum dot is formed, and an AlGaAs insertion layer is grown on the above InGaAs/GaAs quantum dot. A location of photo luminescence of the InGaAs/GaAs quantum dot is varied according to the existence of the above AlGaAs insertion layer. As the AlGaAs insertion layer becomes thicker, a peak of a base state of the InGaAs/GaAs quantum dot moves toward a long wavelength to be saturated.
Patent KR-20030058790-A (KR)
Title: manufacturing method of an array panel of liquid crystal display
Inventor: KIM MYEONG JUN
IPC: G02F1/1333
Filed: 2001-12-31
Abstract: PURPOSE: A method for manufacturing an array substrate for a liquid crystal display is provided to reduce deteriorations by reducing a residual film at a step height part, thereby improving the yield. CONSTITUTION: Gate lines(121) and gate electrodes(122) are formed on a substrate(110). A gate insulating film(130) is formed on the gate lines and the gate electrodes. An active layer(141) is formed on the gate insulating film. A plurality of ohmic contact layer(151,152) are formed on the active layer. Data lines crossing the gate lines for defining pixel areas, and source and drain electrodes(162,163) made up of a plurality of metal films(162a,162b,162c,163a,163b,163c) are formed on the ohmic contact layers. A passivation layer(170) is formed on the data lines, and the source and drain electrodes. A pixel electrode(181) is formed on the passivation layer to be connected with the drain electrode. The first metal film of the data lines is 100 Å to 1000 Å in thickness.
Patent KR-20010071058-A (KR)
Title: 분말 제품의 미분을 감소시키는 방법 및 이러한방법으로부터 제조되는 직물 세정제
IPC: C11D7/26
Filed: 1999-07-28
Abstract: 본 발명은 분말형 직물 세정제 조성물을 제조하는 방법에 관한 것이다. 본 발명의 제조방법에 의해 제조된 세정제는 미분의 양이 적다. 본 발명의 제조방법은, 적어도 1종 이상의 입자 재료와 적어도 1종 이상의 액체 성분을 혼합 용기안에 넣어 혼합물을 생성시키는 단계, 이 혼합물을 제 1 시간 동안 섞어 주는 단계, 이 혼합물을 상기 제 1 시간의 적어도 일부 시간동안 초핑시키는 단계, 이 혼합물을 제 2 시간동안 초핑시키지 않고 섞어 주는 단계를 포함한다. 본 발명의 세정제 조성물의 한 종류는 적어도 80중량% 이상의 무기염 캐리어 입자, 1 ~ 10중량%의 유동제 입자, 및 0.1 ~ 15중량%의 방향제, 계면활성제, 솔벤트, 살균제 및 이들의 혼합물로 구성되는 군 중에서 선택되는 액체 활성물질을 함유한다. 본 발명의 조성물 입자의 적어도 90.0%는 0.105밀리미터보다 큰 입자 크기를 가진다.
Patent KR-20010086370-A (KR)
IPC: B61L5/10
Filed: 1999-09-02
Abstract: 포인트 검출 시스템(1)에서, 포인트 검출기 바(5)는 포인트 검출기 슬리브(10) 내부에 미끄럼 가능하게 계류되고, 타겟(25)은 포인트 검출기 바(5)와 일체로 맞물린다. 포인트 검출기 슬리브(10)는 하우징(17)의 트랙 및 필드측벽(14)에 각각 고정되는 트랙 및 필드측 베어링(12,20)에 의해 지지된다.  포인트 검출기 바(5)는 단지 트랙측 베어링(12)으로부터만 하우징(17) 외부로 뻗어 있다. 베어링(12,20)은 상호변경 가능하다. 감지 장치(30,35)는 슬라이드 메카니즘(40,45) 상에 장착되어 타겟에 대하여 감지 장치를 조정한다. 그리고, 적어도 하나의 다른 감지 장치(80,85)는 잠금 바 조립체(60) 및 스위치 기계의 잠금 박스(50)의 정상 및 역전 잠금 위치를 검출한다.
Patent KR-20010075272-A (KR)
IPC: G06Q10/00
Filed: 2000-07-19
Abstract: 본 발명은 제품 배포 환경내의 디지털화된 멀티미디어 콘텐츠로 구성된 제품의 관리 및 보호를 지원하는 저작권 정보 관리 시스템에 관한 것이다.  저작권 정보 관리 시스템(10)은, 저작권 소유자와 배포자 중 적어도 하나를 포함하는 제품 제공자(12)와 제품을 수령하는 제품 사용자(13)간에 제품이 통신라인(14)을 통해 배포되는 제품 배포 환경(15)에 제공되고, 통신라인(14)을 통해 제품에 관계된 정보를 교환하는 저작권 정보 관리 센터(11)를 제공한다. 저작권 정보 관리 센터(11)는 개별 제품에 관계된 저작권 정보를 센터(11)에 미리 등록시킴으로써 통신라인(14)을 통해 모든 저작권 정보를 중앙에서 관리한다.
Patent KR-20030096434-A (KR)
Title: Delivery of Solid Drug Compositions
IPC: A61K9/70
Filed: 1995-08-31
Abstract: This invention relates to the parenteral administration of solid drug compositions. In particular, this invention relates to a syringe-like device for delivering solid drug cylinders including a syringe barrel, a needle, and a microplunger and piston assembly, wherein said microplunger pushes said solid drug cylinder out of said needle and into a patient and said piston pushes on said microplunger. <IMAGE>
Patent KR-20010086158-A (KR)
IPC: H01L21/76
Filed: 2000-10-26
Abstract: 실시예에서, 얕은 트렌치 격리를 갖는 반도체 디바이스 제조 방법은 기판에 실질적으로 평탄한 바닥과 제 1 및 제 2 측벽을 갖는 트렌치 영역을 형성하는 것을 포함한다.  트렌치 영역에서, 상기 방법은 바닥과 상기 제 1 및 제 2 측벽 상에 유전체 라이너를 형성한다.  유전체 라이너는 실리콘 질화물 화합물이다.  유전체 라이너는 소스/드레인 주입 손상에 의해 유도된 채널 프로파일의 일시적 증가된 확산 으로 인한 폭에 따른 임계 전압(V t 대 W)의 비정상적인 증가를 최소화한다.  게다가, 서브마이크론 디바이스에서 틈간의 기울기의 형성에 관련된 W에 대한 V t 의 불규칙한 증가는 줄어들게 된다.  또한, 질화된 라이너를 사용함으로써, 붕소 편석에 기인한 V t 롤오프도 최소화된다.
Patent KR-20010093320-A (KR)
IPC: G06Q50/00
Filed: 2000-02-03
Abstract: 본 발명은 주차 차고, 주차 구획, 도로주차, 및 무료주차에 대한 운영을 제공하는 컴퓨터화된 주차시설 운영시스템(10)에 관한 것으로서, 각 차량이 주차시설(70)에 진입할 때 차량과 그의 차량번호판을 사진촬영하여 고유하게 식별하며, 주차 위치를 결정하기 위해 차량의 외관을 특정화하고, 다른 실시예로서 주차 위치를 결정하기 위해 글로벌 위치표시 시스템(GPS) 수단을 사용하며, 가변 메시지 표시부는 이용가능한 주차공간을 운전자에게 제공하며, 상기 시스템은 어떠한 주차공간에 주차된 특정 차량을 식별하는 것이 가능하며, 또한 다양한 검색 기준에 따른 주차시설내의 차량의 컴퓨터 검색이 가능하고, 주차점유 또는 시간에 기초한 차량의 유무의 자동적인 통지를 제공하며, 도난방지시스템은 주차시설내에 주차된 어떠한 차량에 대한 보호를 제공하는 것을 특징으로 한다.
Patent KR-20010105373-A (KR)
Title: 식물의 농업경영 및 영양 가치의 개선 방법
IPC: C12N15/82
Filed: 2000-03-03
Abstract: 본 발명은 표적 숙주 식물이 당해 카로틴 및(또는) 크산토필을 축적하는데 필수적인 카로티노이드 생합성 경로의 모든 효소를 발현시킬 수 있는 형질전환체를 생산하기 위하여 식물 세포, 종자, 조직 또는 전체 식물을 형질전환시키는 수단 및 방법을 제공한다.  본 발명은 또한 본 발명의 방법을 실시하는데 적합하도록 설계된 DNA 분자 및 상기 분자를 포함하는 플라스미드 또는 벡터계를 제공한다.  또한, 본 발명은 개선된 영양 품질을 나타내고 그러한 DNA 분자를 함유하며 및(또는) 본 발명의 방법의 사용에 의해 발생된 유전자 도입 식물 세포, 종자, 조직 및 전체 식물을 제공한다.
Patent KR-20030061209-A (KR)
Inventor: PARK JIN SANG
IPC: G02B26/08
Filed: 2002-01-11
Abstract: PURPOSE: An optical switch is provided to prevent an unnecessary shielding phenomenon of the incident light and a crosstalk phenomenon by shifting mirrors to make a mirror width larger than the width of light. CONSTITUTION: An optical switch includes a body(100), an axis(200), a coil portion(300),a current supply portion(400), a plurality of rotary members(500,510,520), and the first and the second magnets(610,620), and the first and the second mirrors(710,720). The body has an open portion and the first, the second, and the third ports. The axis is located within the open portion of the body. The coil portion is connected to the axis. The current supply portion is connected to the coil portion. The rotary members are installed at the coil portion in order to be rotated by the axis. The first and the second magnets are used for reflecting the incident light to predetermined directions.
Patent KR-20020062203-A (KR)
Title: MANUFACTURE OF (ALL-RAC)-α-TOCOPHEROL
Inventor: BONRATH WERNER
IPC: C07D311/72
Filed: 2002-01-17
Abstract: PURPOSE: Provided is a process for manufacturing (all-rac)-alpha-tocopherol by reacting trimethylhydroquinone with isophytol or phytol in the presence of a catalyst and in a solvent which does not have the disadvantages of previously known procedures. CONSTITUTION: The process for manufacturing (all-rac)-alpha-tocopherol by the catalyzed reaction of trimethylhydroquinone with isophytol or phytol is characterized by carrying out the reaction in the presence of hydrogen tris(oxalato)-phosphate as the catalyst in an organic solvent. The catalyst hydrogen tris(oxalato)-phosphate is used as its adduct with a solvent, particularly aliphatic ether, preferably diethyl ether, or is added in solution, particularly in aliphatic ether or dialkyl or alkylene carbonate, for example the solvent in which the catalyst is prepared.
Patent KR-20030063988-A (KR)
Title: Printer of Paste For Display Device
Inventor: KIM SANG RYEOL
IPC: H01J11/20
Filed: 2002-01-25
Abstract: PURPOSE: A paste printer is provided to prevent distortions by permitting the electrode and thin film to have uniform thicknesses, while allowing for ease of replacement of squeegee. CONSTITUTION: A paste printer comprises a table(18) on which a panel is disposed; a pattern mask(16) for forming a paste on the panel; a squeegee(14) for depositing the paste on the panel; a scriber(15) for collecting the paste from the pattern mask after completion of printing; a main frame(11) for connecting and supporting the scriber and the squeegee; a main gap adjustment unit(12) connected to the main frame and which adjusts the gap formed between the squeegee and the panel; a sub frame(20) for connecting the squeegee and the scriber to the main frame; a press unit(13) interposed between the main gap adjustment unit and the sub frame and which adjusts the descending pressure of the squeegee; and a sub gap adjustment unit(22) mounted on the sub frame and which adjusts the gap formed between both ends of the squeegee and both ends of the panel.
Patent KR-20030065730-A (KR)
Title: Process and System for Waste water treatment contacting micorbes and Plants in the Swampy land
Inventor: KIM JAE HAK
IPC: C02F3/32
Filed: 2002-01-30
Abstract: PURPOSE: Provided are a process and a system for treating wastewater using microbe contact method and plant in artificial wetland in natural purification method. CONSTITUTION: The process system comprises a filter bed (A) being comprised of a small size gravel layer(12), a medium size gravel layer(9) under the small size gravel layer(12), and a large size gravel layer(2) under the medium size gravel layer(9), a natural fiber mat(7) on the filter bed (A), water plants(3) planted in the natural fiber mat(7), working passages formed on the natural fiber mat(7), a plurality of air guide pipes(50) installed in the filter bed (A) in vertical direction at regular intervals and having both ends which are opened, aerators(51) installed in the air guide pipes(50), respectively, a wastewater inlet pipe and a wastewater outlet pipe which are buried at the opposite ends of the filter bed (A) in horizontal direction, a sludge withdrawing pipe(10) installed at the bottom of the filter bed (A), and a sludge discharge pipe(11) connected to the sludge withdrawing pipe(10).
Patent KR-20030066150-A (KR)
Title: Structure for fixing to piston and magnet sleeve of linear motor
Inventor: HWANG DONG GON
IPC: H02K41/02
Filed: 2002-02-04
Abstract: PURPOSE: A magnet sleeve of a linear motor and a structure for fixing a piston are provided to improve the productivity by flowing a current into the magnet sleeve to fix a fixing member to a curved portion of the magnet sleeve. CONSTITUTION: A magnet sleeve(40) is fixed to a flange of a piston through the fusion splicing of a fixing member(50) due to the flowing of current. The magnet sleeve(40) does not have a bolt inserting hole. The fixing member(50) fixes a curved portion(41) of the magnet sleeve(40) to the flange of the piston. A piston(60) is provided with a flange(61) and a plurality of fixing member inserting holes(62) formed on the flange(61). The piston(60) contacts to the curved portion(41) of the magnet sleeve(40) when the fixing member(50) is inserted into and allows a current to flow into the fixing member(50) and the magnet sleeve(40).
Patent KR-20020069481-A (KR)
Inventor: HILKERT GOTTFRIED
IPC: C08K3/013
Filed: 2002-02-08
Abstract: PURPOSE: A transparent biaxially oriented polyester film, its preparation method and its use are provided to improve optical properties, particularly to enhance the gloss and to reduce the haze. CONSTITUTION: The transparent biaxially oriented polyester film comprises 80 wt% or more of a thermoplastic polyester; and 0.05-0.5 wt% of the dye system characterized by the average diameter of 1.5-5 micrometers and the distribution represented by SPAN 98 of 1.9 or less. Preferably the thickness of the film is 1-50 micrometers. The transparent biaxially oriented polyester film is used as a packaging film, and is applied to metallizing, ceramic coating or a substrate for stamping foils. In the method, the length-direction elongation is carried out with an elongation rate of 2.5:1 to 6:1 at a temperature of 80-130 deg.C, and the width-direction elongation is carried out with an elongation rate of 3:1 to 5.5:1 at a temperature of 90-150 deg.C.
Patent KR-20030071362-A (KR)
Title: System for network-based providing artificial intelligent traffic information service and method thereof
Inventor: PARK MYEONG HWAN
IPC: G08G1/0968
Filed: 2002-02-28
Abstract: PURPOSE: A network-based artificial intelligence type traffic information service system and a method for the same are provided to transmit rapidly the optimum traffic information to an user by receiving and analyzing traffic information and transmitting the analyzed traffic information. CONSTITUTION: A network-based artificial intelligence type traffic information service system includes a communication network(10), an information terminal(20), a database(30), and a traffic information management computer(40). The communication network(10) is used for connecting a plurality of communication lines to each other. The information terminal(20) is installed at a vehicle for connecting traffic information in order to transmit the speed data of vehicles, coordinate data, traveling data to the outside, and the optimum path data to a GPS receiver of the vehicle. The database(30) is used for storing the speed data of vehicles, position data of the vehicles, and the destination data. The traffic information management computer(40) is used for storing the traffic information to the database(30) and transmitting the traffic information of the database(30) to an user terminal.
Patent KR-20030072861-A (KR)
Title: System for searching video of pvr
Inventor: JANG GYEONG HUN
IPC: H04N5/92
Filed: 2002-03-07
Abstract: PURPOSE: A system for searching PVR(Personal Video Recorder) video is provided to realize non-linear search playing video at various speed according to attributes of moving pictures. CONSTITUTION: A PID(Packet Identifier) filter(100) is provided so that a user selects MPEG(Moving Picture Experts Group) bit stream transported in real time. An indexing unit(110) directly receives a program selected from the PID filter in real time or generates an index file and a histogram file from the selected program. A control unit(120) contains the index file and the histogram file generated from the indexing unit. A hard disk(130) controls the real-time program, the index file and the histogram file for storing the same through a PCI(Peripheral Component Interconnect) bus.
Patent KR-20030024542-A (KR)
Title: Screen printing plate, method and device for manufacturing the same, screen printing method and device, and screen-printed matter
Inventor: IKEDA HIROSHI
IPC: B41J2/01
Filed: 2002-03-08
Abstract: PURPOSE: To provide a screen printing plate, which is equipped with a highly sharply patternized intercepting member, which can form a printed image with high resolution and is excellent in durability. CONSTITUTION: The screen printing plate is equipped with a permeable member having a permeability to ink and an intercepting member for intercepting the ink by being adhered to the permeable member. The intercepting member is formed by delivering fluid intercepting material to the permeable member on the permeable member or to an intermediate transferring body interposed. In a preferred embodiment the intercepting material is delivered by an ink jetting method.
Patent KR-20030075115-A (KR)
Title: Medical communication apparatus and method using bluetooth
Inventor: KIM YUN YEONG
IPC: H04W84/18
Filed: 2002-03-16
Abstract: PURPOSE: A medical communication device using a Bluetooth and a method therefor are provided to monitor the state of a protection object always in a remote place, using a Bluetooth function, and automatically notify emergency situation to a protector and a doctor in charge of a medical institution, who are located in the remote place. CONSTITUTION: A protection object device(1) measures a body temperature and a pulsation of a protection object in a certain period, and transmits an emergency message to a home alarm device(2) and a LAN(Local Area Network) access point(3), using a Bluetooth function, when the measured value is over a permission value. When receiving the emergency message, the home alarm device(2) outputs an alarm sound to a protector. The home alarm device(2) transmits the emergency message to a hospital alarm device(4) and a portable terminal(8), and constructs a channel with the hospital alarm device(4) to perform a voice call. The LAN access point(3) connects to the protection object device(1) and the home alarm device(2) by a Bluetooth, and connects to the hospital alarm device(4) by a LAN. When the emergency message is received through the LAN access point(3), the hospital alarm device(4) outputs an alarm to a doctor in charge of a medical institution, displays necessary information, and transmits a voice communication request message to allow the protection object device(1) to construct a voice channel.
Patent KR-20030020817-A (KR)
Title: PPPoA SPOOFING IN POINT-TO-POINT PROTOCOL OVER ATM USING AN xDSL MODEM
Inventor: NOH EUNG SEOK
IPC: H04L12/56
Filed: 2002-03-29
Abstract: PURPOSE: A PPPoA(Point-to-Point Protocol over ATM(Asynchronous Transfer Mode)) spoofing method in a PPPoA using an xDSL(x Digital Subscriber Line) and an apparatus therefor are provided to use a DNS(Domain Name Service) server and a global IP(Internet Protocol) address provided by a NAS(Network Access Server) in a client PC without an additional local IP address. CONSTITUTION: An ADSL(Asynchronous DSL) modem(50) completes a single network connection between a client PC(10) and a NAS(40). When the client PC(10) is booted, one PPP connection is formed in the NAS(40). IP configuration information including a global IP address transmitted from the NAS(40) is received in a DHCP(Dynamic Host Configuration Protocol) server through an IP control protocol of a PPP layer. A bridge is formed between the client PC(10) and the NAS(40) so that an IP packet is transmitted between the client PC(10) and the NAS(40). IP configuration information inputted from the NAS(40) is transmitted to the client PC(10).
Patent KR-20030079294-A (KR)
Title: Compositions of scale removal device for water pipes
Inventor: KIM YUN YEONG
IPC: F16L9/133
Filed: 2002-04-03
Abstract: PURPOSE: A pipe composite is provided to remove scale and rust from the inside of a water treatment pipe by using a metal, a compound metal, and a mineral. CONSTITUTION: An outer metal of a pipe includes of copper, brass, or zinc, which is low in ionization tendency. An inner metal of the pipe includes zinc, magnesium, copper, or brass, which is larger in ionization tendency than the outer metal.