baber/WOPTO huggingface dataset:
Patent KR-20020043840-A (KR)
Title: Method for stabilization of drug and decrease of skin-stimulation in the skin absorption having effect of removing wrinkle and protection wrinkle formation
Inventor: HAN SANG HUN
IPC: A61Q19/08
Filed: 2000-12-04
Abstract: PURPOSE: A method for increasing the stability of a drug by using a semi-permeable film as a supporter of a transdermal administration type preparation, packing the preparation with packing paper of a multilayer film and filling nitrogen is provided. Whereby, the transdermal absorption type pharmaceutical preparation can reduce irritation on the skin or discomfort. CONSTITUTION: The transdermal administration type preparation comprises a supporter, an adhesive layer containing a drug having a wrinkle preventing or removing effect and a release film to stabilize the drug and reduce skin irritation in a transdermal administration type preparation containing a retinoid-based drug, wherein a semi-permeable film is used as a supporter of the transdermal administration type preparation, the transdermal administration type preparation is packed with packing paper of a multilayer film and nitrogen is filled at the same time.
Patent KR-20020044651-A (KR)
Title: A method for forming chromate coating for tin coating steel sheet with excellent paint adherence
Inventor: KIM HYEONG JUN
IPC: C23C22/24
Filed: 2000-12-06
Abstract: PURPOSE: A method for forming a chromate coating for tin coating steel sheet with excellent paint adherence with no addition of specific elements is provided. CONSTITUTION: The method is characterized in that a chromate solution having a sodium dichromate concentration of 20 to 30g/L is electro-coated on the surface of tin plate in an amount of 3.0 to 4.0 C/dm¬2. In the method, the chromate solution has a temperature range of 46 to 55°C, and a pH range of 4.0 to 5.0.
Patent KR-20020047715-A (KR)
Title: Transfer device in the making machine of the rice cake or dumpling
Inventor: JANG IN LAK
IPC: A23L7/10
Filed: 2000-12-14
Abstract: PURPOSE: A transfer device for a steamed rice cake producing machine or a bun producing machine is provided, thereby the waste pieces of a crust of the steamed rice cake or bun can be safely re-inserted into the crust supplying part of the machine. CONSTITUTION: The transfer device for a steamed rice cake producing machine or a bun producing machine comprises a first gear(13a) which is placed in a shaft(11a) of an upper transferring roller(11) to be rotated intermittently; a second gear(13b) which is placed in a shaft of a lower transferring roller(30a) being placed in the rear of the upper transferring roller(11); numerous assistant rollers(11) which maintain tension of a belt; upper and lower transferring belts(10a, 10b) which are independently combined with the transferring roller(11) and assistant roller(11) to move with a certain distance between them; and a guide support which is fixed by inserting both ends of the guide support to the belts(10a, 10b) and guides the waste pieces of a crust of the steamed rice cake or bun(33), so that the waste pieces of a crust can be safely transferred to a crust supplying part(300) of the machine.
Patent KR-20020046582-A (KR)
Inventor: LEE BYEONG WON
IPC: B23K9/18
Filed: 2000-12-15
Abstract: PURPOSE: A submerged arc welding flux with superior pock mark resistance and impact strength for zinc primer plate is provided. CONSTITUTION: The submerged arc welding flux for zinc primer plate comprises SiO2 7-10 wt.%, CaO 2-5 wt.%, MgO 8-11 wt.%, Al2O3 46-49 wt.%, TiO2 5-10 wt.%, CaF2 13-17 wt.% and it satisfies the following inequalities: (Na2O+K2O+MnO)<=10%, 4.5<= (Al2O3/MgO)<=5.2.
Patent KR-20020048830-A (KR)
Title: The gas assisted injection molding method and the same apparatus and its mold
Inventor: HA MAN YEONG
IPC: B29C49/06
Filed: 2000-12-18
Abstract: PURPOSE: A method and an apparatus for performing a hollow injection molding process and a mold for the same are provided to improve the cooling efficiency of plastic by injecting gas into a hollow portion while exhausting gas from the hollowing portion. CONSTITUTION: An injection mold(50) includes a moving mold(51) formed with a molding section(54) and a fixing mold(52). An injection nozzle(61) is provided to inject molten plastic(55) into the molding section(54) of the injection mold(50). A gas injection nozzle(62) injects nitrogen gas into molten plastic(55) so as to form a hollow section(56). Gas is supplied into the gas injection nozzle(62) through a gas supplying section(64). An exhaust pin(63) is inserted into the hollow section(56) so as to exhaust gas from the hollow section. The exhaust pin(63) is moved by an exhaust pin driving section(80). An air supplying section(70) is provided to supply air into the gas injection nozzle(62).
Patent KR-20020049807-A (KR)
Title: Isolation method for a semiconductor device
Inventor: CHA HAN SEOP
IPC: H01L21/76
Filed: 2000-12-20
Abstract: PURPOSE: A method for isolating a semiconductor device is provided to perform an isolation in a technology not greater than 0.1 micrometer so that high integration of the semiconductor device is easily performed, by using an epitaxial growth method to form a trench. CONSTITUTION: An oxide layer(18) for forming the trench is formed on a substrate(10). The region for forming the trench on the oxide layer is masked, Photoresist having a pattern with a window is formed in an active region. The oxide layer for the active region is etched. Photoresist is eliminated. An epitaxial growth layer(16) is formed in the etched active region. The epitaxial growth layer is planarized.
Patent KR-20020049884-A (KR)
Title: Shift controlling device and methode for automatic transmission of vehicle
Inventor: LEE JEONG SEOK
IPC: F16H61/04
Filed: 2000-12-20
Abstract: PURPOSE: A device and method for controlling shifting of an automatic transmission for a vehicle is provided to prevent a vehicle from being pushed backward when a vehicle starts on a sloping road. CONSTITUTION: A device for controlling shifting of an automatic transmission for a vehicle comprises a device for detecting moving and traveling of a vehicle(100), a unit for controlling shifting(200), and a driving unit(300). The device for detecting moving and traveling of a vehicle detects the state of traveling of the vehicle. The unit for controlling shifting outputs a control signal to the device for detecting moving and traveling of a vehicle, receives the state of the shifting mode, throttle valve opening, rotational frequency of the output shaft, rotational frequency of the engine, and the position of a gear shift lever, and decides the state of the road. The unit for controlling shifting outputs a control signal of two-speed brake if a stop of the vehicle on a sloping road at N range is decided, and releases two-speed brake and at the same time outputs a one-speed control signal for a forward movement if a start of the vehicle on the sloping road is decided. The driving unit performs shifting by supplying hydraulic pressure discharged from an oil pump with duty control by a duty control signal of speed change control output from the unit for controlling shifting to an appropriate frictional element, and releasing.
Patent KR-20020050553-A (KR)
Title: LCD glass grinding apparatus and grinding method using the same
Inventor: AHN GYEONG CHEOL
IPC: B24B7/24
Filed: 2000-12-21
Abstract: PURPOSE: An LCD glass polishing apparatus and a method for polishing the LCD glass by using the same are provided to prevent the LCD glass from being damaged and to polish plurality of LCD glasses on once by installing an LCD glass polishing holder in the LCD glass polishing apparatus. CONSTITUTION: An LCD glass polishing apparatus includes a lower plate(110) formed at an upper portion thereof with a polishing pad(112). The lower plate(110) is rotated by the driving motor(130). An upper plate(210) is placed on the lower plate(110). The upper plate is driven by the second driving motor(240) so that the upper plate(210) is rotated together with the lower plate(110). Polishing holders are attached to a bottom portion of the upper plate(210). The polishing holders are provided with at least two aligning sections for receiving an LCD glass. A polishing liquid supplying section(300) supplies the polishing liquid into a supplying pipe(331) installed on the lower plate(110).
Patent KR-20020051029-A (KR)
Title: device for adjusting oil temperature of auto transmission
Inventor: KIM HWI NYEON
IPC: F16H59/72
Filed: 2000-12-22
Abstract: PURPOSE: A device for controlling oil temperature of an automatic transmission is provided to keep the temperature of oil properly by heating or cooling the oil according to the temperature of cooling water, thereby preventing the transmission shock due to the lowering of the oil temperature and improving the transmission performance. CONSTITUTION: A device for controlling oil temperature of an automatic transmission includes a heating unit(28) for heating oil by the heat exchange between cooling water of an engine and oil of the automatic transmission, a cooling unit for cooling the oil, and a flow channel control element(25) for controlling an oil channel for flowing the oil to either the heating unit or the cooling unit according to the temperature of the cooling water, wherein the cooling unit has a radiator(26).
Patent KR-20020051203-A (KR)
Title: A method of preparing acrylo nitrile-butadiene rubber nanocomposite and acrylo nitrile-butadiene rubber nanocomposite prepared thereby
Inventor: KIM JIN TAE
IPC: C08K7/00
Filed: 2000-12-22
Abstract: PURPOSE: Provided is a process for producing an acrylonitrile-butadiene rubber(NBR) nanocomposite resin composition having improved strength, oil-resistance, and heat-resistance. CONSTITUTION: The process comprises the steps of: mixing a solvent and an emulsifier selected from octyl amine, dodecyl amine, stearyl amine, acrylonitrile-butadiene rubber having an amine terminal, an emulsifier having a hydroxy or carboxy group, and acrylonitrile-butadiene rubber having a carboxy terminal; dispersing a plate clay-based filler in a solvent, wherein the clay-based filler is montmorillonite; mixing and reacting the emulsifier solution and the dispersed plate clay-based filler for 6-24 hours; washing and removing the solvents; hot blast drying at an ordinary temperature to less than 60deg.C to produce a nanocomposite filler; melting the acrylonitrile-butadiene rubber at an ordinary temperature to 60deg.C; adding, based on the weight of the acrylonitrile-butadiene rubber, 5-10phr of the nanocomposite filler, 1-2phr of a processability improving agent, 1-5phr of a crosslinking auxiliary, and 1-3phr of a crosslinking agent.
Patent KR-20020054093-A (KR)
Title: Sleep device of universal joint
Inventor: KIM GIL JUNG
IPC: F16D3/06
Filed: 2000-12-27
Abstract: PURPOSE: A slip device of a universal joint is provided to prevent an interval between a female spline and a male spline by compensating the interval by an elastic member when the interval occurs by abrasion due to a long use of the slip device and the female spline is contacted to the male spline side by elasticity of the elastic member. CONSTITUTION: A slip device of a universal joint includes an elastic member(20) of a predetermined shape. The elastic member is fixed to an inner pipe(12) and mounted between a female spline(11a) and a male spline(12a) to elastically support the female spline toward the male spline. A mounting part is formed between a number of teeth formed on the male spline to insert teeth formed on the elastic member and the female spline.
Patent KR-20020055455-A (KR)
Title: Apparatus for Internet Key Exchange and Supporting Method for Security Service using it
Inventor: LEE HYEONG GYU
IPC: H04L9/08
Filed: 2000-12-28
Abstract: PURPOSE: An Internet key exchanging server apparatus for providing a security service and a method are respectively provided to allow systems of two communication ends to automatically set a security based on a negotiation result. CONSTITUTION: The Internet key exchanging server apparatus for providing a security service includes security processing modules(101,122) which are respectively installed to two communication ends. The security processing modules(101,122) transfers key exchanging signals having an Internet protocol number and a port number. Encryption modules(101,121) process passwords according to requests of the security processing modules(101,122). Security policy databases manage modules(104,124) are manage security policy data. Key exchanging apparatus(105,125) generate lists of supportable encryption functions and information and provide the lists to the other system(120).
Patent KR-20020054875-A (KR)
Title: Liquid Crystal Display Device installed EGIP
Inventor: LIM JU SU
IPC: G02F1/133
Filed: 2000-12-28
Abstract: PURPOSE: A liquid crystal display having an electric graphic input panel is provided to secure a dead space of a liquid crystal display to form a touch panel having at least five wires and prevent short-circuiting of a touch panel electrode. CONSTITUTION: A liquid crystal display having an electric graphic input panel includes a liquid crystal display device, a case(27) casing the liquid crystal display device, and an EGIP POL(28). The liquid crystal display device includes a liquid crystal display panel(23), a light guide plate(25) and a light source(26). The EGIP POL is attached to the liquid crystal display panel and the case. The liquid crystal display panel and the case are constructed in the same height. A touch panel electrode of the EGIP POL is formed in a five-wire or eight-wire resistant film mode.
Patent KR-20020055158-A (KR)
Inventor: JANG HEON YONG
IPC: H01L27/108
Filed: 2000-12-28
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to minimize an influence upon a cell capacitor at the edge of a cell block, by connecting a dummy capacitor with a guard ring capacitor wherein the dummy capacitor is made smaller than the cell capacitor. CONSTITUTION: The dummy capacitor(10) and the cell capacitor(9) are repeated in a predetermined direction in the cell block(11). The guard ring capacitor(12) surrounding the edge of the cell block is connected to the dummy capacitor at the edge of the cell block. The capacitors are fabricated by the following processes. A bitline is formed on a semiconductor substrate. The first oxide layer and the first nitride layer are sequentially deposited on the bitline. A storage node contact is opened by an etch process using a storage node contact mask. A storage node contact plug is deposited, and a chemical mechanical polishing(CMP) process is performed to separate the storage node contact into each cell. The second oxide layer is deposited on the storage node contact plug. The storage node contact is exposed by an etch process using a storage node mask. A capacitor lower electrode is deposited on the second oxide layer. Photoresist is applied on the substrate. A CMP process is performed to separate the capacitor into each cell.
Patent KR-20020055210-A (KR)
Title: apparatus and method for file access control in multi user computer system
Inventor: PARK GI HYEON
IPC: G06F12/14
Filed: 2000-12-28
Abstract: PURPOSE: A device and a method for controlling a file access in a multiple user computer system are provided to watch a file access of a user through a control of a system call. CONSTITUTION: A system call processing unit has information with respect to a system call to be intercepted in an intercept engine and position information of a system call processing unit with respect to an intercepted system call. When a user process requests system calls specified in the system call processing unit, a substitution system call processing unit(101) processes the request in lieu of an original system call processing unit. An intercept engine(100) comprises an interface for performing a communication between the substitution system call processing unit(101) and a database(200). The database(200) stores an access authority with respect to a file and judges as to permission to an access with respect to a user-requested file. An initialization module(300) initializes the intercept engine(100). An operating system kernel(400) comprises a system call vector table having a registered system call processing unit. A user process(500) comprises a system command language, a user program, and a library function, and requests a system call to the system call vector table.
Patent KR-20020057191-A (KR)
Title: Method for database back-up between multi SCP in intelligent network system
Inventor: LEE SANG U
IPC: H04L12/28
Filed: 2000-12-30
Abstract: PURPOSE: A method for backing up database between multi-SCP in an intelligent network system is provided to share database and exchange back-up files of the database between SCP systems, thereby increasing the agreement in data. CONSTITUTION: A communication processor of an SMS transmits a data back-up request message and an address of the nth SCP to a communication processor of an SCP(ST11). The communication processor of the SCP instructs the first DBMS(Database Management System) to create database back-up files(ST12). The first DBMS loads data saved at the first DB for creating the back-up files(ST13). The created back-up files are transmitted to the second DB by using an FTP(File Transfer Protocol)(ST14). It is determined whether the back-up files are transmitted(ST15). A back-up and FTP transmission termination message is transmitted to the communication processor of the SMS(ST16). The communication processor of the SMS transmits a back-up file loading command message to the nth communication processor(ST17). The nth communication processor transmits a back-up file loading command to the nth DBMS, so that the nth DBMS reads the back-up files for saving the back-up files at the nth DB(ST18).
Patent KR-20010015866-A (KR)
Title: 톨루엔 유도체의 제조방법
IPC: C07F3/02
Filed: 1998-12-09
Abstract: 화학식 1의 2-클로로-6-치환된 톨루엔 유도체를 저급 알킬 브로마이드의 존재하에 에테르계 용매 중에서 금속 마그네슘과 반응시켜 화학식 2의 톨루엔 유도체를 제조한다. 
     화학식 1 
     
       
     
     화학식 2 
     
       
     
     상기 화학식 1 및 2에서, 
     R은 불소원자, 염소원자, 알콕시기 또는 알킬티오기이고, 
     X는 할로겐 원자이다.
Patent KR-20010033704-A (KR)
Title: 프로그래밍 가능한 교정 렌즈
IPC: G02C7/06
Filed: 1998-12-24
Abstract: 본 발명은 광학 배율을 제공하는 체적 HOE를 사용하는 안구용 렌즈를 제공한다.  안구용 렌즈는 다수의 상이한 굴절이상 상태를 조정할 수 있도록 매우 융통성 있는 공정에 의해 제조한다.
Patent KR-20010024837-A (KR)
Title: 트랜잭션을 수행하는 클라이언트/서버 컴퓨팅시스템에서의 사용을 위한 클라이언트 처리 장치, 서버처리 장치, 클라이언트 처리 방법, 서버 처리 방법 및컴퓨터 프로그램 제품
IPC: G06F15/16
Filed: 1998-12-18
Abstract: 트랜잭션을 수행하는 클라이언트/서버 컴퓨팅 시스템에서의 사용을 위한 클라이언트 처리 장치는 트랜잭션의 개시을 통지하기 위해 개시 커맨드를 발행하며, 원격 서버에 실질적인 트랜잭셔널 커맨드를 발행 - 상기 커맨드는 트랜잭션이 개시되었지만 트랜잭션을 표현하는 트랜잭션 객체가 아직은 생성되지 않았음을 도시하는 특정값을 갖는 트랜잭션 문맥을 포함함 - 하고, 일단 상기 원격 서버가 상기 트랜잭션 객체를 생성하면, 상기 원격 서버로부터 수정된 트랜잭션 문맥을 수신함이 개시되어진다.
Patent KR-20010040874-A (KR)
Title: 액체 퀀치를 이용한 수소화처리 반응기 및 방법
IPC: C10G65/00
Filed: 1999-02-03
Abstract: 본 발명은, 각각의 반응구역이 수소화처리 촉매층을 포함하고, 적어도 첫번째 반응구역은 수소화처리 반응구역을 포함하고 또한 적어도 하나의 하부 스트림 반응구역은 수소화분해 반응구역을 포함하는, 복수개의 연속적인 반응구역을 갖는 반응기 시스템의 첫번째 반응구역내로 공급원료를 도입하는 단계, 수소를 반응구역내의 액체와 발열반응시켜 각 반응구역의 유출물이 그 반응구역으로의 유입 액체 공급원료의 온도보다 높은 온도를 갖도록 하기 위하여 수소 기체를 반응구역내에서 액체와 접촉된 상태로 촉매층을 통해 및 촉매층 위로 흐르게 하여 반응기 시스템내로 도입하는 단계, 첫번째 반응구역내로 도입된 액체 공급원료와 동일한 조성을 갖는 액체 공급원료를 첫번째 반응구역의 하부 스트림에 있는 적어도 하나의 퀀치 구역내로 도입하여 바로 상부 스트림 반응구역으로부터 나온 유출물과 혼합하고 도입된 액체 공급원료는 유출물의 온도를 낮추기에 충분한 공급속도 및 온도를 갖도록 하는 단계, 퀀치 기체를 바로 상부 스트림 반응구역으로부터 나온 유출물 및 도입된 액체 공급원료와 결합하여 유출물의 온도를 소정의 범위내에 있도록 하기에 충분한 양으로 주입하는 단계 및 마지막 반응구역으로부터 나온 분해된 액체 공급원료 유출 생산물을 재생하는 단계를 포함하는, 오염물질 수준이 낮아진 분해된 액체 공급원료를 생산하기 위하여 액체 탄화수소 공급원료를 촉매 수소화처리 및 수소화분해하는 방법 및 반응기 시스템에 관한 것이다.
Patent KR-20010041495-A (KR)
IPC: G01N21/64
Filed: 1999-02-25
Abstract: 본 발명은 (i) 대역폭이 2.5eV를 초과하는 반도체로 이루어진 광활성 층, (ii) 반도체에 도포된 염료, 및 (iii) 바람직하게는 고체 및 비결정질인 홀 도전재를 포함하는 전하 전송층을 보유함을 특징으로 하는, 전자기 방사선 검출 장치에 관한 것이다.
Patent KR-20010042502-A (KR)
Title: 공황 발작의 치료
IPC: A61P25/00
Filed: 1999-03-30
Abstract: 화합물 1'-[4-[1-(4-플루오로페닐)-1H-인돌-3-일]-1-부틸]-스피로[이소벤조퓨란-1(3H), 4'-피페리딘]은 공황 발작에 대한 효과의 예측 모델에 활성이 있고, 공황 발작에 연관된 장애의 치료를 위한 약제의 제조에 유용하다.
Patent KR-20020011850-A (KR)
IPC: G01R3/00
Filed: 1999-10-15
Abstract: 본 발명의 목적은 가볍고, 열 응답 키네틱스가 뛰어나고 프로브 카드로 가압시 뒤틀리지 않으며, 따라서 실리콘 웨이퍼의 손상 및 측정 에러에 대하여 효과적으로 자신을 방어하는 웨이퍼 프로버를 제공하는 것이다. 
     본 발명은 웨이퍼 프로버에 관한 것으로서 세라믹 기판에는 그 표면상에 컨덕터층이 형성된다.
Patent KR-20010034776-A (KR)
IPC: C11D3/386
Filed: 1999-04-14
Abstract: The present invention relates to a novel improved protein mutant which produces low allergenic response in humans compared to the parent of that mutant. Specifically, the present invention comprises neutralizing or reducing the ability of T-cells to recognize epitopes and thus prevent sensitization of an individual to the protein.
Patent KR-20010042835-A (KR)
Title: 실리콘 단결정의 제조방법
IPC: C30B15/00
Filed: 2000-02-23
Abstract: 자장을 인가하는 쵸크랄스키법에 의해, 단결정 잉곳을 인상하여 성장시키는 실리콘 단결정의 제조방법에 있어서, 동일 석영 도가니를 이용하여 실리콘 단결정을 제조하는 시간이 100시간 이상이고, 인가하는 수평자장분포 또는 커스프형 자장분포에서 수평성분 자장강도가, 실리콘 융액면과 석영 도가니 측벽과 직교하는 위치에서 500Gauss 이상인 실리콘 단결정의 제조방법. 본 발명에 의하면, 석영 도가니 내표면의 열화를 억제하여 도가니의 수명을 연장하고, 도가니의 열화에 따라 발생하는 무전위화를 방지하여, 인상 단결정 잉곳 1개당 도가니 개수를 감소시키며, 또한 도가니 교환에 요하는 시간을 삭감하고, 수율 및 생산성의 향상을 도모하고, 공업적으로 값싸고 고품질인 실리콘 단결정의 제조방법을 제공하는 것이 가능하다.
Patent KR-20020059197-A (KR)
Title: A support for reinforcing equipment
Inventor: SONG YU SUB
IPC: E04C5/18
Filed: 2001-01-05
Abstract: PURPOSE: A bar support is provided, which solves the problem of overturn that is the weakest point when bar supports both upper bars and lower bars at one time and also has the effect of reducing costs for construction. CONSTITUTION: The body(1) of the bar support comprises: the core comprised of cavity walls(11,12) and side-walls(13,14) installed on both sides of the core; support(2) for upper bars and support(3) for lower bars. The support for lower bars consists of receiving part and blocking jaw. A passage-hole opened downward should be in an orthogonal direction with bars of lower supports(2) between cavity walls(11,12). The laid bars among lower bars can be received through passage-hole.
Patent KR-20020057708-A (KR)
Title: Supporting device for shelf
Inventor: KIM DAE YEON
IPC: F25D25/04
Filed: 2001-01-05
Abstract: PURPOSE: A device for supporting shelf of refrigerator is provided to easily adjust height of the shelf and to efficiently use a space in a storage compartment. CONSTITUTION: A device includes a storage compartment storing food; a rod having one end connected to an inner wall of the storage compartment and a front end freely moving up and down; a shelf connected to the front end of the rod to be supported thereby; and a heightening and lowering device comprising a fixing device connected to the one end of the rod to selectively fix the rod at a certain rotation angle and a guide formed on the shelf to slide the front end of the rod and moving up and down the front end of the rod to adjust height of the shelf.
Patent KR-20020060417-A (KR)
Title: Document searching system and searching method using individual history information
Inventor: CHON SUK JIN
IPC: G06F17/30
Filed: 2001-01-11
Abstract: PURPOSE: A system and a method for searching a document are provided to support a document searching service according to users by constructing a database based on document access history information according to users. CONSTITUTION: An index database unit(120) manages index information with respect to all documents being supplied to users through a communication network. A document management database unit(110) manages basic information of each document. A document access history database unit(130) stores and manages document access history information according to users. When a user connected to a communication inputs a keyword for searching a document, a search processing unit(140) creates a document search list with respect to documents including the keyword by contents of the index database unit(120) and the document management database unit(110) and supplies the list to a corresponding user, supplies a document to a corresponding user by accessing a document selected by the user, stores the document supply details in the document access history database unit(130), and supplies a document search service according to users by referring to contents of the document access history database unit(130).