baber/WOPTO huggingface dataset:
Patent KR-20010057533-A (KR)
Inventor: KIM GYEONG WON
IPC: C21D8/06
Filed: 1999-12-24
Abstract: PURPOSE: A method for manufacturing a wire rod for spring steel is provided which secures elasticity and resistance to permanent deformation of a suspension spring steel and obtain ductility required during cod forming into a spring after heat treating the manufacture wire rod in a high frequency induction heat treating method by adjusting steel constituents and properly controlling continuous casting conditions for manufacturing a strip. CONSTITUTION: The method for manufacturing a cold formed wire rod for spring steel comprises the processes of continuous casting a molten steel containing 0.40 to 0.70 wt.% of C, 1.2 to 1.6 wt.% of Si, 0.60 to 0.90 wt.% of Mn, 0.60 to 0.90 wt.% of Cr, 0.030 wt.% or less of P, 0.030 wt.% or less of S, 0.010 to 0.20 wt.% of Al and a balance of Fe and other inevitable impurities to a casting speed of 0.70 to 0.80 m/min; rolling into a billet after manufacturing a strip by carrying out the light reduction rolling on the continuous casted steel to 4 to 8 mm; reheating to the temperature range of 1000 to 1100 deg.C after grinding the whole surface of the billet to a depth of 1.0 to 2.0 mm per single surface; manufacturing a wire rod having a diameter of 8 to 15 mm by wire rod rolling the reheated billet; water cooling the wire rod with an amount of cooling water of 100 to 140 mm2/h based on a wire rod having a diameter of 13 mm right after the wire rod rolling; and binding the wire rod by applying a pressure of 65 to 75 bar to the coiled wire rod after coiling the water cooled wire rod.
Patent KR-20010063934-A (KR)
Title: Turbo compressor
Inventor: LEE SANG UK
IPC: F04D25/00
Filed: 1999-12-24
Abstract: PURPOSE: A turbo compressor is provided to reduce flow resistance of refrigerant gas and reduce loss by stabilizing flow of refrigerant gas, thereby improving the capacity of the compressor. CONSTITUTION: A turbo compressor includes a motor casing(20) having a motor chamber(22), a plurality of first gas paths(23), and a suction port(24) communicating with the motor chamber, a motor(30) mounted at the motor chamber, a rotary shaft(40) coupled to the motor, a first bearing plate(50) coupled to cut and open one side of the motor casing, coupling with a radius directional support element(130) supporting the rotary shaft and having a plurality of second gas paths(52) communicating with the motor chamber and a plurality of third gas paths(53) communicating with the first gas paths, a shroud member(60) coupled to the first bearing plate for forming a first inflow space communicated with the second gas paths, a diffuser casing(70) forming a first compression chamber(P1) and a fourth gas path(71), a second bearing plate(80), coupled to cut and open the other side of the motor casing, coupling with the radius directional support element supporting the rotary shaft and having a fifth gas path(81) communicating with the first gas paths, an axial directional support element(90) supporting the rotary shaft in axial direction, a bearing cover(100) cutting and opening the axial directional support element, a volute casing(110) forming a second inflow space communicating with the fifth gas path and having a volute part(111), a diffuser cover(120) forming a second compression chamber(P2) communicating with the second inflow space, first and second impellers(41,42) positioned at the first and second compression chambers, and a discharge pipe(140) communicating with the volute part.
Patent KR-20000048419-A (KR)
Inventor: DAKAHASI JOON
IPC: E05F15/10
Filed: 1999-12-27
Abstract: PURPOSE: A method to detect insert for a power window device is provided not to malfunction even when in abnormal pulse edge interval, and not to give the force more than standard force for inserter. CONSTITUTION: A method to detect insert for a power window device contains the following characteristics: the system has a motor (4), an amateur driving part (3), a pulse generation part (5), MCU(Micro Control Unit)(2), a switch part (1), and a timer to be arranged in the MCU; the MCU calculates an insert decision time corresponding to the standard and renews the set time of the timer whenever pulses edge from the pulse generation part generate, and the MCU stops insert a detect in presence and stops the motor or rotates the motor reversely when the next pulse doesn't generate even passing insert a decision time after one pulse generates.
Patent KR-20010060758-A (KR)
Inventor: CHOI HAE CHANG
IPC: B21B1/16
Filed: 1999-12-28
Abstract: PURPOSE: A manufacturing method for a medium-carbon steel strip added with high-silicon having no low temperature organization is provided to cool the steel strips in a general cooling equipment under control without employing any EDC(Easy Drawing conveyor) equipments or control rolling equipments, for restraining the producing of a low temperature organization, thereby guaranteeing fine ferrite+pearlite organization with a uniform quality. CONSTITUTION: A manufacturing method for a medium-carbon steel strip added with high-silicon having no low temperature organization includes the steps of heating a billet consisting of carbon 0.40-0.60wt%, silicon 2.0-4.0wt%, manganese 0.1-0.8wt%, chrome 0.1-0.8wt%, phosphorus 0.01wt% or less, sulfur 0.01wt% or less, nitrogen 0.005-0.01wt%, oxygen 0.005wt% or less, one or two selected from a group consisting of nickel 0.3-2.0wt%, boron 0.001-0.003wt%, vanadium 0.01-0.5wt%, niobium 0.01-0.5wt%, molybdenum 0.01-0.5wt%, titanium 0.01-0.2wt%, tungsten 0.01-0.5wt%, and copper 0.01-0.2wt%, Fe and other impurities at a temperature of 950-1150°C for carrying out hot rolling of strips, rapidly cooling the rolled strips by water-spraying to a temperature of 760-790°C to wind, air-cooling the strips at a cooling speed of 1.4±0.4°C/sec to a temperature of 670±30°C, slowly cooling the strips at a cooling speed of 0.6±0.3°C/sec to a temperature of 595±65°C, and air-cooling the strips.
Patent KR-20010059722-A (KR)
Inventor: PARK JEONG HWAN
IPC: H03K17/22
Filed: 1999-12-30
Abstract: PURPOSE: A circuit and a method of detecting a glitch signal are provided to prevent an error operation of a system and achieve a stability of a system. CONSTITUTION: In a circuit of detecting a glitch signal, a filtering logic circuit reduces a signal if the signal for connecting a board with the other board is maintained under a pre-set time period and outputs the signal if the signal is maintained over the pre-set time period. In a method of detecting a glitch signal, it is determined that a circuit is initiated or a PRESET signal is applied. An operation of a counter is broken and a low signal is output if the circuit is not initiated or the PRESET signal is not applied. In case that the circuit is initiated and the output is low, it is determined that a PBRST signal input to the circuit of detecting a glitch signal is high. If the PBRST input is high, a low signal is output and the counter is operated. If the counter is operated over the desired turns, while the input of the PBRST is high, the output is set as high. If the PBRST is high, while the output is high, the output is maintained as high.
Patent KR-20000068325-A (KR)
IPC: A61K31/40
Filed: 1997-08-13
Abstract: 하기 화학식 I의 화합물 또는 그의 염은 중요한 제약적 특성을 가지며 NK1 및 NK 2 길항물질로서 특히 효과적이다. 
     〈화학식 I〉 
     
       
     
     상기 식에서, 
     R은 할로겐, 저급 알킬, 트리플루오로메틸, 히드록시 및 저급 알콕시기로부터 선택되는 1, 2 또는 3개의 치환체로 치환되거나 비치환된 페닐이고, 
     R 1 은 수소 또는 저급 알킬이며, 
     R 2 는 수소, 저급 알킬, 또는 할로겐, 저급 알킬, 트리플루오로메틸, 히드록시 및 저급 알콕시기로부터 선택되는 1, 2 또는 3개의 치환체로 치환되거나 비치환된 페닐이고, 
     R 3 은 할로겐, 저급 알킬, 트리플루오로메틸, 히드록시 및 저급 알콕시기로부터 선택되는 1, 2 또는 3개의 치환체로 치환되거나 비치환된 페닐이거나, 또는 나프틸, 1H-인돌-3-일 또는 1-저급 알킬-인돌-3-일이며, 
     R 4   ' 및 R 4   " 는 각각 서로 독립적으로 수소 또는 저급 알킬이고, 라디칼 R 4   ' 및 R 4   " 중 적어도 하나는 수소이며, 
     R 5 는 C 3 -C 8 시클로알킬, D-아자시클로헵탄-2-온-3-일 또는 L-아자시클로헵탄-2-온-3-일이다.
Patent KR-20000048556-A (KR)
Inventor: BUCCELLATO GINA M
IPC: E01F9/04
Filed: 1997-01-31
Abstract: PURPOSE: An addition of antimicrobial agents to pavement marking systems to inhibit the growth of microorganisms on and under the pavement marking when it is affixed to a pavement. CONSTITUTION: Addition of antimicrobial agents to pavement marking materials resulted from the discovery that microbial growth on or under the pavement markings when the markings are positioned on the pavement can compromise the integrity of the marking. Vehicle and weather wear on the pavement marking combined with microbial deposits from surface or storm water runoff, vehicles and pedestrian and/or animal traffic can result in focal or disseminated microbial growth in the pavement marking materials. Microbial growth erodes the pavement marking material, reducing its adhesive properties as well as destroying its integrity on the pavement surface. Microbial growth also exacerbates the lift effect of small pockets of water that become trapped between the marking and the pavement.
Patent KR-20000057449-A (KR)
Inventor: RAGHU SURYA
IPC: B05B1/10
Filed: 1997-12-19
Abstract: PURPOSE: Provided is an improved windshield washer nozzle system, and more particularly, to provide an improved high-speed windshield washer nozzle in which fluidic and aerodynamic effects are associated with the washer fluid nozzle in such a way as to cause the windshield washer washing liquid to impinge on the windshield more closely in the desired areas under substantially all operating conditions. CONSTITUTION: A windshield washer system wherein a nozzle is mounted on the hood of a vehicle and issues a jet of washer fluid in the ambient towards the windshield. The nozzle has a housing and a projecting surface, air deflector or tab formed to with or attached to the nozzle housing for aerodynamically assuring that the washer fluid impinges on the windshield in a predetermined area thereon at speeds above a predetermined minimum. In preferred embodiments, the projecting surface, air deflector or tab projects from about 6 mm to about 12 mm above the nozzle housing.
Patent KR-20010005796-A (KR)
Title: 레이저 빔에 의한 열간 압연 강재의 맞대기 용접 방법 및 그것을 위한 장치
IPC: B23K35/30
Filed: 1998-03-26
Abstract: 레이저 빔을 사용하여 복 수개의 열간 압연 강재를 결합하므로써 연속 열간 압연하는 동안 스피킹 및 멜트 다운없이 평평한 바닥을 가진 비드 형상을 얻고 용접 비드부에서 균일한 투과 깊이를 형성하기 위해서, 다음과 같이, (A) 레이저 출력과 빔 직경 그리고 중심 가스의 종류와 유동율에 의해 결정되는 표준 플라즈마 직경의 0.2 배 내지 0.5 배 만큼 거리로 레이저-유도 플라즈마의 중심이 레이저 빔의 중심으로부터 용접 방향으로 변위되어 용접이 수행되는 것을 구성하는 레이저 빔의 광축에 대칭되게 용접부에 대항하여 중심 가스를 분사하는 한편 측부로부터 측방 가스를 분사하여 레이저 빔에 의해 열간 압연 강재를 맞대기 용접하는 방법, (B) 선행하는 강재의 후단과 후행하는 강재의 전단을 서로 맞대고 맞대어진 부분이 레이저 빔으로 가용접되는 방법으로서, 다수개의 열간 압연 강재들을 결합하고 결합된 강재들을 연속적으로 열간 압연하여 열간 압연 강재 또는 강대를 생산하는 동안, 상기에서 언급한 레이저 용접시 맞대어진 선을 따라 2 내지 10 m/min 의 속도로 레이저 빔으로 주사하고, 동시에 맞대어진 선에 수직인 방향으로 40 내지 80 Hz 의 진동수와 0.4 내지 1.0 mm 의 진폭으로 레이저 빔을 진동시키는 것을 포함하는 레이저 빔에 의해 가용접하는 방법이 사용된다. 
     다른 방편으로, (C) 용접 비드내 기공의 형성을 방지하고, 용접 비드부에서 균일한 침투 깊이를 형성하고, 및 스피킹 및 과도한 투과 없이 평평한 바닥을 가지는 비드 형상을 얻기 위해서, 알루미늄, 실리콘, 티타늄, 망간 중 하나 또는 두개 이상의 원소를 0.05 내지 3% 포함하는 철 계열 기초재(iron series base material)의 용가 와이어가 용접부에 공급되면서 레이저 용접이 행해진다. 또한, (D) 높은 공급 정확성을 가지고 맞대는 부분에 용가 와이어를 공급하기 위해서,용가 와이어 (W)는 만곡 부를 가진 와이어 공급 노즐을 통하여 관통하고, 및 용가 와이어는 용접 라인을 따라 용접 포인트을 향하여 공급된다.
Patent KR-20010006177-A (KR)
Title: 포스포디에스테르 합성 방법
IPC: C07F9/09
Filed: 1998-01-27
Abstract: 본 발명은 하기 화학식 1의 포스포디에스테르 화합물의 제조 방법에 관한 것이다. 이러한 화합물은 진단 영상화에 대한 콘트라스트 제제로서 매우 유용하다. 이 방법은 다수의 중간체의 형성으로 인한 다수의 분리 및 정제 단계를 하지 않아도 된다. 
     화학식 1
Patent KR-20010012067-A (KR)
IPC: H04L1/00
Filed: 1999-02-19
Abstract: A system and method is taught for controlling the power level of transmissions within a communication system having a base station, a mobile station, a communication channel, and a pilot channel. The mobile station determines a signal strength value according to a communication signal received by way of the communication channel. A pilot channel signal is determined according to a pilot signal transmitted by way of the pilot channel. The signal to noise ratio of the communication signal is determined according to the determined signal strength value and the pilot channel signal. The power level of a transmission is controlled according to the signal to noise ratio. The noise level in a communication channel within the communication system is estimated. The pilot channel signal includes pilot energy and pilot noise components. The pilot energy component is removed to provide a remaining pilot signal. Communication system operations are controlled according to the remaining pilot signal. The power levels of transmissions are controlled by determining the signal to noise ratio of a signal within the communication channel and determining a difference signal. The difference signal is formed by determining the difference between determined and desired signal to noise ratios. The difference signal is transmitted between the base station and the mobile station. The pilot channel has at least one frame and the power control signal is inserted into the frame. Thus, information representing the strength of the communication signal is transmitted to the base by way of the pilot channel within the frame. The pilot channel can have two information frames for transmitting the power control signal a plurality of times.
Patent KR-20010020533-A (KR)
Title: 디스크 카세트
IPC: G11B23/033
Filed: 1999-05-24
Abstract: 디스크 카세트는 디스크 형상의 데이터 기록 매체, 및 그 디스크 형상의 데이터 기록 매체를 회전되게 수용하는 쉘을 구비하고 있다. 상기 쉘의 표면 양측부는 드라이브 장치에 삽입 시, 그 드라이브 장치에 설치한 카세트 유지 부재가 접촉하여, 그 카세트 유지 부재에 의해서 눌러지는 유지 영역(트랙)이 설치되어 있다. 상기 유지 영역에는 다수의 그루브가 설치되어 있다. 상기 다수의 그루브에 의해서 상기 카세트 유지 부재와 유지 영역의 접촉 면적이 적어지고 마찰 저항이 감소하여, 디스크 카세트는 부드럽게 드라이브 장치 내에 삽입되게 된다. 그리고, 상기 유지 영역 상에 카세트 유지 부재가 슬라이딩 할 때 발생하는 마모 입자 등은 상기 그루브 내에 수용된 후 외부로 배출된다.
Patent KR-20000030140-A (KR)
Inventor: CHO JEUNG HEE
IPC: B60Q1/52
Filed: 2000-01-11
Abstract: PURPOSE: A device is provided to solve a problem that a road is congested, and the danger of an accident is increased since it is impossible for an adjacent vehicle to efficiently avoid an emergency vehicle when changing a course. CONSTITUTION: A relay, a sliding switch, an electromagnetic switch and a diode are additionally used in the existing general direction indicator and emergency light circuit. Even when an emergency light switch is operated after adding up and changing some circuits, the stopping and parking state and the situation of changing a course are indicated by differentiating the number or pattern of flickering per the time unit of the right and left lights of indicating the direction when changing the course or stopping and parking. The intension of a driver is informed to the adjacent vehicle or people even in a state that the emergency light switch is operated by using a flickering system of two different direction indication light having different control number of current per the time unit.
Patent KR-20000071346-A (KR)
Title: 듀얼다마신공정을 사용한 반도체장치 제조방법
IPC: H01L21/768
Filed: 2000-02-14
Abstract: 본 발명에 따른 반도체장치 제조방법은 다음의 공정을 구비한다.  먼저, 도전막(1)상에, 더미플러그(102,302)와, 상기 더미플러그(102,302)와 상이한 재료로 이루어지고 적어도 상기 더미플러그(102,302)의 측벽을 덮도록 층간절연막(5,15)을 제조한다.  다음에, 상기 층간절연막(5,15)상에, 상기 더미플러그(102,302)의 폭보다 긴 폭을 갖는 개구(103)를 갖는 마스크층(6)을 형성한다.  그리고, 상기 마스크층을 마스크로 사용하여 상기 층간절연막(5,15)의 일부분을 에치제거함으로써, 배선디치(104)의 저면상에, 상기 더미플러그(102,302)의 상면이 노출되도록 상기 절연막(5,15)내에 상기 배선디치(104)를 형성한다.  이 때, 상기 더미플러그(102,302)의 상면은 상기 배선디치(104)의 상기 저면과 동일한 레벨 또는 낮은 레벨에 위치한다.
Patent KR-20000058100-A (KR)
Inventor: JIMURA YOSHI TAKA
IPC: C03C8/14
Filed: 2000-02-18
Abstract: PURPOSE: A CRT frit for sealing CRT bulb is provided to seal a panel or funnel of CRT in low temperature and short time. CONSTITUTION: A CRT frit for sealing CRT bulb comprises an amorphous glass powder of 75-90wt% PbO, 7-20wt% B2O3, 0-8wt% ZnO, 0-5wt% SiO2, 0.1-8wt% Al2O3 + Fe2O and a fire resistant filler. The mixing ratio of the amorphous glass powder and the fire resistant filler is between 95:5 to 55:45 in weight. The heat expansion constant on a temperature between 30 and 250°C, is laid on from 80 to 90x10-7/°C
Patent KR-20000030314-A (KR)
Inventor: BAEK HEE SEON
IPC: E03F5/00
Filed: 2000-02-22
Abstract: PURPOSE: A water conveying hole and a socket for a manhole are provided to be simply installed by offering an assembling-typed manhole supply with separately producing the water conveying hole, the socket and a guide socket by recycling a waste vinyl, to reduce an air and a cost and to improve the working efficiency by finishing a construction in an early stage. CONSTITUTION: A passage is equipped to conform a downstream hole(23) of a water conveying hole(20) formed by a waste vinyl on a lower plate(10) to a right downstream hole(42) of a sphere(40). A drain pipe is connected by reclaiming a socket in the downstream hole(42) of a right wall of the sphere and a guide socket is reclaimed inside an upstream hole(41) left the sphere. And the water conveying hole(20), the guide socket and the socket are equipped to drain a sewage flowed from an inflow pipe in the side by flowing to the water conveying hole(20) inside a manhole when a fall is generated. The water conveying hole is corresponding to various flowing angles because a width of the hole faced from the upstream to the center is widened and the hole is a swelled form and the construction is able as it is when a position is controlled inside a permitted range of the angle in the case that the position of the manhole is changed by obstacles.
Patent KR-20010086504-A (KR)
Title: Calling service of cellular
Inventor: CHA JAE SUNG
IPC: H04B7/26
Filed: 2000-03-02
Abstract: PURPOSE: A mobile communication terminal call service is provided to improve the performance of a mobile communication terminal by transmitting data when transmitting a call message and knowing a current transmitter through a callee bell sound of the mobile communication terminal. CONSTITUTION: The first mobile communication terminal receives a page message(the first information data) on a paging channel(S211). A BTS(Base Transceiver System) transmits a channel allocation message through the paging channel, and the first mobile communication terminal receives the channel allocation message for performing a CDMA demodulation(S213). The first mobile communication terminal detects call acoustic data or call character data through the CDMA demodulation(S215). If the acoustic data are set as a result of the detection(S217), the first mobile communication terminal outputs a conversation called sound as the set acoustic data(S219). If the character data are set as a result of the detection(S221), the character data are displayed on a display device of the first mobile communication terminal.
Patent KR-20000076803-A (KR)
Title: 안정 셀 비를 갖는 고속 ｓｒａｍ
IPC: G11C11/412
Filed: 2000-03-10
Abstract: SRAM은, 오프 상태의 전달 트랜지스터(11, 12)를 통해 디지트 라인(15, 16)으로부터 공급된 오프 누설 전류를 이용하여 데이타 보유 모드에서 각각 동작하는 4-트랜지스터 메모리 셀(22)을 포함한다.  메모리 셀(22)의 셀 비는, 셀 비의 불일정성(un-uniformity)에 대응하는 불일정성을 갖는 기준 전압(VR)에 의해 결정됨으로써, 안정한 데이타 보유 동작과 디지트 라인(15, 16)의 고속 이퀄라이제이션을 제공한다.
Patent KR-20000030798-A (KR)
Inventor: CHOI JAE SEONG
IPC: G06F17/30
Filed: 2000-03-17
Abstract: PURPOSE: A recycled articles searching system is provided to search all sites in connection with recycled articles at once without searching them one by one by constructing a database of the sites dealing with recycled goods. CONSTITUTION: A recycled articles searching system is to effectively provide a searching service for information on the recycled articles to users by constructing a database of sites dealing recycled articles through the whole internet. The recycled goods searching system includes a searching network connected with a database and a searching engine. After connecting to a web site, a user inputs a word corresponding to an article to search for example, 'refrigerator' and presses a search button. Then the searching engine performs searching all sites in connection with the information as to the refrigerator. User reviews the searched information and clicks what is most proper to find out more details and to make a deal with the article registrant.
Patent KR-20000036586-A (KR)
Inventor: CHOI HYUN JIP
IPC: G06Q50/10
Filed: 2000-03-22
Abstract: PURPOSE: A bingo game and advertizement method over the internet is provided to supply a free gift for a bingo game winner, display various banner advertisement on a user's terminal during the bingo game and let an advertisement owner automatically register a banner advertisement over the internet. CONSTITUTION: A bingo game and advertisement method comprises steps of a user accessing a web site(S100), displaying an agreement provision and registering a bingo game participation by driving a database and a program(S200), displaying a survey questionnaire given by an advertisement owner and storing the questionnaire filled up by the game player in the database(S300), transmitting a bingo card with numbers and characters included to a computer of the player(S400), transmitting a preset game time counting to the computer of the player(S500), receiving voices corresponding to numbers and characters and sequentially checking the numbers and characters of the bingo card(S600), transmitting the bingo card by clicking a bingo icon if a bingo occurs(S700), checking the transmitted bingo card at the server computer and a winner(S800), displaying the winner and stopping the game until the number of the winners arrives at a preset number(S900), and transmitting the game results to free gift suppliers(S1000).
Patent KR-20010092834-A (KR)
Title: Sonic piezoelectric ceramic transducer
Inventor: CHO CHI YEONG
IPC: G01H11/00
Filed: 2000-03-27
Abstract: PURPOSE: A piezo-ceramic sound wave transducer is provided to simplify the structure and improve the resistance with respect to the impact load applied from the outside by designing a fixed main body on a neutral surface to endure the load for preventing the damage of the piezo-ceramic assembly or the change of the physical properties of the piezo-ceramic assembly. CONSTITUTION: A piezo-ceramic sound wave transducer includes a front surface weight(2) for transmitting and receiving underwater sound waves, a piezo-ceramic assembly(1), a rear surface weight(3), and a fixed main body(6) mounted on a vibration-neutral surface between the front surface weight and the piezo-ceramic assembly, wherein the fixed body is a flange type, a prestressed bolt(4) and a nut(5) are fixed to the front surface weight by penetrating the rear surface weight, the piezo-ceramic assembly and the flange type main body, so that the parts are fixed with respect to one another and the piezo-ceramic assembly is applied with prestress before compression.
Patent KR-20000037047-A (KR)
Inventor: KIM HONG LYONG
IPC: G06F17/00
Filed: 2000-04-06
Abstract: PURPOSE: An after-sale service system using the internet is provided so that consumers can rapidly exactly request an after-sale service by using the internet. CONSTITUTION: An internet site(2) for receiving after-sale service requests is loaded in an internet server(4). An internet terminal(6) connects to the internet site(2) through the internet, and requests the after-sale service. The internet server(4) is connected to communication servers(16) of the companies which have manufactured the respective products. A condition input window(12) is aligned in the internet homepage so that consumers can input model names, defect portions, condition or position of each product. When the consumer connects to the homepage and requests the after-sale service, the internet server(2) transmits the after-sale service request data to the communication server(16) of the company which has manufactured the corresponding product according to the model name of the product inputted to the condition input window(12).