baber/WOPTO huggingface dataset:
Patent KR-20010022860-A (KR)
IPC: C07D301/02
Filed: 1998-08-13
Abstract: 촉매의 존재하에서 화합물 (A) 또는 (B)와 알킬렌 옥사이드를 반응시켜 화학식 (D)의 에폭시 화합물을 제조하는 방법, 여기에서 R b 는 화학식(1, 2 및 3)에서 선택된 그룹을 나타내고 촉매는 할로겐, 아세테이트, 포스페이트, 카르복실레이트 또는 이들이 배합물로부터 선택된 반대 음이온 X - 과 결합한 적어도 하나의 양이온(C)를 포함하는 화합물로부터 선택된다.; 적어도 상기의 특정 반응 단계를 포함하는 에폭시 수지 및 낮은 할로겐 함량을 특징으로 하는 기재된 공정에 의해 수득되는 에폭시 수지의 제조 공정.
Patent KR-20010030739-A (KR)
Title: 통신 단말기
IPC: H04B1/10
Filed: 1999-07-21
Abstract: 이동 무선 단말기(2)에서, 버스트 방식으로 전송된 RF 신호는, 원격 전화 가입자에게 오디오 신호와 함께 간섭 신호를 전송하는, 상기 단말기의 오디오부에서의 간섭을 초래할 수 있다. 간섭 신호의 크기를 감소시키기 위해, 간섭 억압 수단(24)이 이용된다. 상기 간섭 억압 수단(24)의 계산상 복잡성은 간섭 신호의 이미 알고 있는 특성을 이용하여 상당히 감소될 수 있다. 만일 예를 들어 간섭 신호의 스펙트럼 특성을 이미 알고 있다면, 간섭 신호의 스펙트럼 성분을 포함하는 것으로 알고 있는 주파수 대역만을 처리하는 것이 가능해진다.
Patent KR-20010031402-A (KR)
Title: 열전 변환 재료와 그 제조 방법
IPC: H01L23/532
Filed: 1998-08-05
Abstract: 본 발명은 Si에 각종 불순물을 첨가한 P형 반도체 혹은 N형 반도체로 이루어져, 생산성이 좋고, 품질이 안정적이며, 저렴하고 또한 높은 성능 지수를 갖는 열전 변환 재료인 신규의 Si계 열전 변환 재료의 제공을 목적으로 하고 있다.  Si에 여러 가지 원소를 첨가하면, 캐리어 농도가 10 18 (M/m 3 )까지는 캐리어의 증가와 함께 제벡 계수는 저하되지만, 10 18 내지 10 19 (M/m 3 )에 걸쳐 극소치를 지닌다고 하는 성질을 갖는데, 이러한 성질을 갖는 Si에, Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, B, Al, Ga, In, Tl의 원소를 단독 또는 복합하여, 혹은 N, P, As, Sb, Bi, O, S, Se, Te의 원소를 단독 또는 복합하여, 0.001 원자% 이상, 0.5 원자% 이하 함유하고, 캐리어 농도가 10 17 내지 10 20 (M/m 3 )인 P형 반도체 혹은 N형 반도체로 이루어진 열전 변환 재료, 나아가 상기 원소를 0.5 원자% 이상, 10 원자% 이하 함유하고, 캐리어 농도가 10 19 내지 10 21 (M/m 3 )인 P형 반도체 혹은 N형 반도체로 이루어진 열전 변환 재료를 얻는다.
Patent KR-20010031869-A (KR)
IPC: C05G5/23
Filed: 1998-10-28
Abstract: Erfindungsgegenstand ist in einer ersten Ausführungsform ein Verfahren zur Wachstumssteigerung der Erdreich-Mikroorganismenflora und Förderung des mikrobiellen Aufschlusses eines mit organischer Substanz beladenen Erdreichs (Substrat) sowie damit verbundener nachhaltiger Stärkung und Förderung eines gesunden Pflanzenwachstums in diesem Substrat. Das Verfahren kennzeichnet sich durch den Eintrag wässriger Zubereitungen, enthaltend (a) ökologisch verträgliche Netzmittel vom O/W-Typ zusammen mit (b) lipophile gesättigte und/oder olefinisch ungesättigte Kohlenwasserstoffreste mit Fettstruktur aufweisenden und sowohl aerob als auch anaerob abbaubaren organischen Verbindungen als zusätzliche C-Lieferanten für das Wachstum der Mikroorganismenflora, verbunden mit gleichzeitigem und/oder zeitlich versetzten Eintrag von (c) wenigstens anteilsweise Öl-lösliche Verbindungen des P und/oder N und gewünschtenfalls weitere Makro- und/oder Mikronährstoffe für das Pflanzenwachstum enthaltenden Trägerstoffen. Gegenstand der Erfindung sind weiterhin wasserverdünnbare wässrige Konzentrate der zuvor genannten Komponenten zu (a), (b) und (c) sowie die Anwendung dieser Wertstoffgemische für die Bodenkonditionierung, insbesondere eine Erdbodenkur mit rottebeschleunigender Wirkung (Mineralisierung), mit bodenverbessernder Wirkung (Verbesserung der Bodenbelüftung, Beseitigung von anaerob belegten Bodenbereichen und dergleichen) und insbesondere für den Einsatz als Vitalisierungsmittel mit pflanzenstärkender, bevorzugt slow-release-Düngewirkung.
Patent KR-20010034000-A (KR)
Title: 저작권 보호를 위해 소프트웨어 객체로서 제공된 콘텐트
IPC: G06F1/00
Filed: 1999-11-01
Abstract: 영화, 오디오 파일 또는 텍스트 메시지와 같은 콘텐트 정보가, 런타임 환경에서 콘텐트 정보의 최종 사용자의 액세스를 위한 캡슐화된 프로시져를 갖는 소프트웨어 객체로 최종 사용자에게 제공된다. 이 객체는, 콘텐트 정보가 액세스되는 시간 프레임과 방식을 지정할 수 있다. 콘텐트 데이터와 함께, 프로시져가 객체 내부에 캡슐화되고, 인터넷을 통한 객체의 전송이 직렬화 이후에 이루어지기 때문에, 권한이 없는 재생 또는 복제를 방지하는 적절한 보안성이 제공된다.
Patent KR-20010034602-A (KR)
Title: 자이로스코프
IPC: G01C19/56
Filed: 1999-03-10
Abstract: 적어도 2개의 축에 대한 변화율을 감지하는 자이로스코프는 링 또는 후프와 같은 형의 구조를 갖는 대체로 평면인 진동 공진기(2)와 상기 공진기(2)를 Cosn 1 θ―여기서 n 1 은 2 이상의 정수 값을 가짐―평면 내 캐리어 모드(in-plane carrier mode)로 진동하게 하는 캐리어 모드 구동 수단(carrier mode drive means; 4)을 포함한다.  또한 상기 자이로스코프는 상기 공진기(2)를 탄력적으로 지지하는 지지 수단(support means; 3), 상기 공진기의 평면 내 운동을 감지하는 캐리어 모드 픽오프 수단(carrier mode pick off means; 5), X축을 중심으로 하는 자이로스코프의 회전에 응답하여 상기 공진기의 평면 외 Cosnθ―여기서, n은 n 1 +1 또는 n 1 -1 값을 가짐― 응답 모드 운동을 감지하는 X축 응답 모드 픽오프 수단(X axis response mode pick off means; 8), 및 Y축을 중심으로 하는 자이로스코프의 회전에 응답하여 상기 공진기의 평면 외 Sinnθ―여기서 n은 X축 응답 모드에 대한 값과 동일한 n 1 +1 또는 n 1 -1 값을 가짐― 응답 모드 운동을 감지하는 Y축 응답 모드 픽오프 수단(9)을 포함한다.
Patent KR-20010042198-A (KR)
Title: 압축 액화 천연 가스로부터 전력을 생산하는 방법
IPC: F17C9/02
Filed: 1999-03-26
Abstract: 액화 천연 가스의 치리에서 생성되는 증발-손실 증기를 압축시킨 압축 액화 천연 가스(PLNG) 냉각물을 사용하여 보다 높은 압력의 기체 생성물을 생성하는 동시에 바람직하게는 적어도 이러한 방법을 위한 전력의 일부를 제공하는 전력을 생산하는 방법.  이러한 PLNG를 압축시키고, 증발용 제1 열교환기(32)로 이동시키고, 이러한 증기 물질을 추가 가열용 열교환기(33)으로 이동시켜 제1 기체 생성물을 생성시킨다.  냉매는 제1 열교환기를 통하여 PLNG를 가열하고, 펌프(36)을 통하여 냉매를 압축시키고, 제2 열교환기를 통하여 냉매를 증발시키고, 일-생산 장치(37)을 통하여 에너지를 발생시키는 폐순환내에서 순환된다.  증발 가스를 압축시키고 제1 열교환기를 통하여 추가로 압축시킨 다음, 제2 열교환기를 통과시켜 제2 기체 생성물을 생산한다.
Patent KR-20020060852-A (KR)
Title: Preventive treatment method of susceptor of CVD device
Inventor: OH WON SANG
IPC: C23C16/00
Filed: 2001-01-12
Abstract: PURPOSE: A method for pretreating a susceptor of an annealing equipment is provided prevent damage of the surface of the susceptor caused by etching generated during annealing process where a thin film is deposited, realize more stable MOCVD process, and extend preventive maintenance cycle of a chamber. CONSTITUTION: The method for pretreating a susceptor of an annealing equipment comprises the steps of preparing a susceptor made of graphite material on which the wafer is mounted in the annealing equipment before mounting the wafer onto the annealing equipment for the process of annealing the thin film of a wafer on which a thin film is deposited using the annealing equipment; and depositing a thin film having a silicon compound material on the susceptor. The method for forming a dielectric thin film of Ta material comprises the steps of preparing an MOCVD(metal organic chemical vapor deposition) and annealing equipment equipped with a chamber in which a susceptor made of a graphite material is contained, and first and second gas supply parts supplying each gases into the chamber; a pretreatment step of forming a thin film of a silicon compound material on the susceptor by flowing a pretreatment gas containing silicon and a reaction gas reacted with the pretreatment gas into the chamber through the first gas supply part; mounting a wafer onto the susceptor after the pretreatment step; forming a dielectric thin film on the wafer by flowing a source gas comprising Ta onto the wafer through the second gas supply part; and annealing the dielectric thin film of the Ta material.
Patent KR-20020062382-A (KR)
Title: The method of advertisement in internet
Inventor: NAM KYUNG SIK
Filed: 2001-01-20
Abstract: PURPOSE: An internet advertisement method is provided to display an advertisement relating to an interest of a user during a web page loading time when web pages are converted so that it can beguile tedium and enhance an advertisement effect. CONSTITUTION: The method comprises steps of a user inputting an address at a web server(101), the user logging in the web server(103), the web server transmitting to an advertisement server member data such as a resident registration number, a sex, a matter of taste or a local area(104), the advertisement server executing a cookie(105), the advertisement server searching a database for a cookie matched with the member data, and retrieving an advertisement according to the searched cookie storing sorts and numbers of browsed advertisements(106,107), the advertisement server transmitting the retrieved advertisements to the user for enabling the user to browse the advertisements(108), if the user clicks on the advertisement, then a corresponding advertisement site being accessed and the advertisement being stored at a cookie(109,110,111), if the user does not click on the advertisement, the displayed advertisement being stored at a cookie(111), the advertisement being displayed while a web page being loaded, and the advertisement being stopped if the web page is completely loaded(112), and checking if other web site is linked(113). In a case that the advertisement is stopped and a web page loading is not completed, the displayed advertisement is being stored at the cookie, and other advertisement being retrieved and displayed.
Patent KR-20020065212-A (KR)
Title: Fast printing apparatus and method
Inventor: LEE BONG GI
IPC: B41J5/30
Filed: 2001-02-06
Abstract: PURPOSE: A high speed printing method and apparatus is provided to print images at a high speed by shortening the time taken for transmitting color image data and processing the transmitted image data. CONSTITUTION: A high speed printing apparatus comprises a data input unit(42) for inputting color image data for the image to be printed; a depth check unit(44) for checking the color depth of the color image data output from the data input unit, and outputting a control signal indicative of the result of the checking; a data separation unit(46) for separating color depth, color index and actual color image data from the color image data input from the data input unit, in response to the control signal output from the depth check unit; a data modifying unit(48) for modifying the color image data input from the data input unit, into gray image data and outputting the result, in response to the control signal output from the depth check unit; and a data transmission unit(50) for selectively transmitting the image data input from the data separation unit and the data modifying unit, in response to the control signal output from the depth check unit. The image data transmitted from the data transmission unit is converted into bit map data and used in image printing.
Patent KR-20020065955-A (KR)
Title: Perspective board for interception electromagnetic wave and processing method thereof
Inventor: PARK MYEONG GYU
IPC: H05K9/00
Filed: 2001-02-08
Abstract: PURPOSE: An electronic wave shielding see-through plate and a manufacturing method thereof are provided to see through inside of an electronic product and avoid erroneous operation of the electronic product due to its electronic wave. CONSTITUTION: An electronic wave shielding see-through plate is manufactured by molding transparent acrylic resin with a see-through plate molding frame. After supplying the resin(1) to the molding frame, a conductive metal network(2) for shielding an electronic wave is laid on the resin(1) and then a tube(3) is arranged at the edge of the resin(1) for avoiding flow of liquid resin. With the tube(3), the liquid resin(4) is supplied over the conductive metal network(2) to complete the plate. The tube(3) is made of silicon or urethane. Another conductive metal network is laid on the resin(4) and then liquid resin is layered once again over the another conductive metal network.
Patent KR-20020066283-A (KR)
Title: Method for managing NDD-memory and network driver using the method
Inventor: BAGCHI SUSMIT
IPC: G06F15/00
Filed: 2001-02-09
Abstract: PURPOSE: A network memory management method and a network drive device using the method are provided to efficiently manage network memories in a real time application where a plurality of tasks are connected to a time bound multiprocessing sequence by using a dictionary, and to prevent a waste of network resources caused by a resource blocking or fragmentation. CONSTITUTION: The network drive device comprises a storage memory, a dictionary and a processor. The storage memory includes various sized buffers for storing data packets to be transmitted via a network. The dictionary designates an address of a buffer within the storage memory according to a size of the packet data if the packet data is transmitted. The processor processes the packet data stored at the buffer. The network memory management method comprises steps of dividing a memory into buffers by the size used in a network communication(300), designating an address of a buffer according to the size of the packet data to be transmitted(310), and storing the packet data at the buffer of the designated address by using the dictionary(320). The dictionary includes address pointer information pointing an address of a buffer having an optimal size for storing the transmitted packet data.
Patent KR-20020068734-A (KR)
Title: Emulsion Paint for Imitation Stone Using for Building
Inventor: KIM YUNG IL
IPC: C09D5/28
Filed: 2001-02-22
Abstract: PURPOSE: An aqueous paint for the construction interior and exterior material is provided, wherein the aqueous paint shows the texture of stone and is improved in the scratch resistance and the masking property of a paint. CONSTITUTION: The aqueous paint comprises a material showing the texture of stone, vehicle and other additives, wherein the material showing the texture of stone is vinyl chloride resin non-color power and vinyl chloride resin color power, and the vehicle is an aqueous vehicle. Preferably the particle size of vinyl chloride resin non-color power and vinyl chloride resin color power is 60 micrometers or more. The vinyl chloride resin color power is obtained by coating the surface of vinyl chloride resin non-color power with a pigment by using an acryl resin, The acryl resin is preferably poly(methyl methacrylate). The aqueous vehicle is acryl emulsion.
Patent KR-20020068826-A (KR)
Inventor: CHOI GUK SEON
IPC: H01L21/8244
Filed: 2001-02-23
Abstract: PURPOSE: A method for fabricating a bottom gate of a semiconductor device is provided to improve step coverage between gate electrode patterns by omitting a process for patterning the third polysilicon layer in forming a gate electrode, and to improve a characteristic by solving a poly stringer problem occurring from an etch target of the fourth polysilicon layer. CONSTITUTION: An undoped polysilicon layer is formed on a silicon substrate(20). Oxygen ions are implanted into a predetermined portion of the undoped polysilicon layer. An annealing process is performed to form an insulation layer(26). Impurity ions are implanted into the entire surface of the undoped polysilicon layer to form the gate electrode(22a). A gate insulation layer is formed on the resultant structure. A channel polysilicon layer is formed on the gate insulation layer. A source/drain region is formed on the channel polysilicon layer. A predetermined portion of the channel polysilicon layer is patterned to form a bottom gate.
Patent KR-20020072348-A (KR)
Title: a color filter panel for liquid crystal display and manufacturing method thereof
Inventor: CHO HEUNG RYEOL
IPC: G02F1/1335
Filed: 2001-03-09
Abstract: PURPOSE: A color filter substrate for a liquid crystal display and a method for fabricating the same are provided to increase the light transmissivity and prevent the decrease of chromaticity by forming transmission grooves and transmission holes in blue color filters, thereby improving the luminance of the LCD. CONSTITUTION: A color filter substrate for a liquid crystal display includes a transparent substrate(210), a black matrix(220) formed on the transparent substrate and having opening parts, color filters(231,241,251) positioned on the opening parts of the black matrix respectively for realizing red, green and blue, an overcoat layer(260) formed on the color filters, and common electrodes(270) formed on the overcoat layer, wherein the color filter for blue has transmission grooves(255) inside.
Patent KR-20020073768-A (KR)
Title: Card issuing machine
Inventor: HWANG WON SUN
IPC: G07B3/04
Filed: 2001-03-16
Abstract: PURPOSE: A card sale machine is provided, to allow the height of a withdrawing hole of cards to be raised above a certain level, thereby improving the convenience of a user. CONSTITUTION: The card sale machine comprises a storing room(20) for storing a plurality of cards(10); a withdrawing device(40) which is set at the upper part of the storing room and withdraws the cards positioned at the uppermost part in turns; and a pushing device(30) for pushing the cards up to the withdrawing device. The pushing device is provided with a loading part(31) where cards are loaded and a spring(32) to generate the elastic force for lifting the loading part up. Preferably the pushing device comprises further a supporting part(33) whose one side is supported by the loading part and other side is supported by the spring and which delivers the elastic force generated at the spring to the loading part; the storing room is provided with a guide member(21) for guiding the supporting part and a supporting roller(22) set in the guide member; and the spring is wound to the roller.
Patent KR-20010090730-A (KR)
Inventor: FURUYA MASAYUKI
IPC: B41M5/333
Filed: 2001-03-22
Abstract: PURPOSE: A developer composition and heat sensitive recording material are provided to display excellent storage stability of the atomized aqueous dispersion, while achieving a high color concentration and superiority in whiteness before recording. CONSTITUTION: A developer composition comprises one or more phenol derivative of sulfonamide structure represented by the following formula and one or more constituents selected from a polyvalent metal compound, antioxidant and reducing agent and provides dispersion having excellent preservation stability on atomization in water. The heat sensitive recording material comprising the developer composition has high color density in developed image and is also excellent in whiteness degree before recording. In the formula, X1 is a hydrogen or halogen atom, an alkyl, alkoxy or hydroxyl group, Z1 is a hydrogen atom or alkyl group, and R1 is an unsubstituted or substituted alkyl or aryl group.
Patent KR-20020074999-A (KR)
Title: Trench Isolation Structure and Method for Fabricating the Same
Inventor: PARK TAE SEO
IPC: H01L21/762
Filed: 2001-03-23
Abstract: PURPOSE: A trench isolation structure and a method for forming the same are provided to prevent a charge trap by forming a trench oxidation prevention layer on a trench buried insulator. CONSTITUTION: The trench isolation structure(414) comprises a trench for defining a plurality of active regions(400a), a trench buried insulator(410), and a trench oxidation prevention layer(412) formed on the surface of the trench buried insulator(410). The trench buried insulator(410) further includes a thermal oxide(408b) formed at bottom(406a) and sidewalls(406b) of the trench, and a CVD oxide formed to entirely fill the trench.
Patent KR-20010095125-A (KR)
Title: Composite sheet and method of preparation thereof
Inventor: OHATA HIROYUKI
IPC: B32B7/022
Filed: 2001-03-30
Abstract: PURPOSE: To obtain a composite sheet capable of forming a layer comprising extensible filaments having small unevenness of diameter. CONSTITUTION: This composite sheet 10 is formed by intermittently joining an extensible layer 2 comprising extensible filaments 6 in one direction to at least one surface of an elastic stretchable layer 3. The filaments 6 are oriented in nearly one direction thereof and the ratio S1/S2 of tensile strength in the one direction to that in the direction intersecting the one direction at right angles is >=3.0.
Patent KR-20010093340-A (KR)
Title: The method of detection for dangerous gas leakage
Inventor: CHO JEONG HYE
IPC: G01N31/22
Filed: 2001-03-30
Abstract: PURPOSE: A method for detecting leakage of dangerous gas is provided to reduce damage of lives and property to minimum by preventing the accident by leakage of the dangerous gas in advance with confirming leakage of all sorts of dangerous gas easily. CONSTITUTION: In the method for detecting leakage of dangerous gas, a gas detecting tape(1), a sticking type tape(2) and a detecting reagent(3) are included. The gas detecting tape(1) is manufactured by sticking the powder or sheet type materials soaked into the detecting reagent(3) on the sticking type tape(2). The detecting reagent(3) is composed of a chromophore, an oxide accelerator and a metal oxide restrainer etc. The size and shape of the gas detecting tape(1) are controlled according to the size of a gas pipe. If the gas detecting tape(1) is sticked on a joint of the gas pipe and an instrument with the danger of gas leakage, the color of the tape(1) is changed when it is contacted with the leaked gas.
Patent KR-20020076910-A (KR)
Title: Clad of aluminium product and coating method and apparatus thereof
Inventor: OH SEUNG TAEK
IPC: C23C26/02
Filed: 2001-03-31
Abstract: PURPOSE: A binder of aluminium product which simplifies manufacturing process, eases manufacturing method, reduces manufacturing man-hour, improves product performance, the external quality of a brazing product and extends a brazing furnace, and coating method and apparatus of the binder of aluminium product are provided. CONSTITUTION: The coating apparatus of an aluminum part is characterized in that a pair of binders(2,3) which are wire shaped hot metals are installed on the upper part of a power supply part(1) in a reel shape, a power source from the power supply part(1) is impressed to the binders(2,3), thereby contacting the two hot metals so that an arc discharge is made, and compressed air generated from a compressor(5) is supplied to a front melting part of the binders(2,3) so that the melted binders are transferred and sprayed on a material to be bonded through a nozzle by compressed air, thereby performing coating of the aluminum product by spraying the melted binders(2,3) on the material to be bonded.
Patent KR-20010098448-A (KR)
Title: 열가소성수지 조합물의 제조방법
IPC: C08F8/32
Filed: 2001-04-04
Abstract: 압출반응시의 토크가 저하하여 현저히 생산성을 향상할 수 있고, 얻어진 수지조성물의 황색도가 낮고 투명성이 뛰어난 스크신이미드 공중합체 조합물을 생산효율 좋게 제조하는 방법을 제공한다. 
     무수말레산 단위 40∼60몰%, 올레핀 단위 60∼40몰% 및 공중합이 가능한 다른 단량체 단위 0∼20몰%로 이루는 무수말레산-올레핀계 공중합체와 한 종류 이상의 아민화합물과의 이미드화 반응에 의해, 스크신이미드수지 이외의 제 2폴리머 존재하에서 행한다.
Patent KR-20020080584-A (KR)
Title: Syndiotactic Polystyrene-Based Reactor Copolymers
Inventor: JANG HAK JEON
IPC: C08L25/04
Filed: 2001-04-16
Abstract: PURPOSE: Provided is a syndiotactic polystyrene reactor copolymer having improved impact resistance without rapid lowering of flexural elasticity, which is produced by using a supported bimetallic catalyst. CONSTITUTION: The syndiotactic polystyrene reactor copolymer comprises 20-90wt% of a styrene-based polymer having high tacticity, 5-70wt% of a rubber phase styrene/olefin copolymer, and 5-30wt% of a block copolymer of the styrene-based polymer with tacticity and the rubber phase styrene/olefin copolymer. The styrene-based polymer with high tacticity has a repeating unit represented by the formula 1 or 2, wherein R, R1, and R2 are hydrogen, halogen atom, or a group containing carbon, oxygen, nitrogen, sulfur, phosphorus, or silicon, l and m are integers of 1-3, and n and n' are polymerization degrees of more than 100.
Patent KR-20020084767-A (KR)
Title: Dredging apparatus for sewerage-box or culvert
Inventor: CHOI JAE HYEON
IPC: E03F9/00
Filed: 2001-05-03
Abstract: PURPOSE: An apparatus for dredging a deposit in a drain box and a conduit is provided to effectively dredge the deposit by adopting a remote control manner using an unmanned camera. CONSTITUTION: The apparatus(1) for dredging a deposit in a drain box and a conduit comprises an unmanned robot carrier(10); a discharge device supported on the carrier, wherein the discharge device has a bidirectional screw(21), a hopper(22), a discharge pump(23), and a discharge pipe(24); a CC-TV camera(40) installed on the carrier; a hopper support device having an arm(31) for supporting the hopper of the discharge device, and a plurality of cylinders(32,33) for adjusting a height and an angle of the hopper; and a driving hydraulic line.