baber/WOPTO huggingface dataset:
Patent KR-20040025052-A (KR)
Title: Rear garnish structure for preventing burglary
Inventor: SHIN CHUNG SIK
IPC: B60R13/04
Filed: 2002-09-18
Abstract: PURPOSE: A U-shaped protector is installed in a wire hole to prevent theft, and an assembling structure of a rear garnish and a trunk door is improved. CONSTITUTION: A number plate is attached to a center of a trunk door, and a rear garnish having a trunk locking device and a license lamp is mounted in the upper part of the trunk door. A bracket for preventing theft having a U-shaped protector(104) is installed in a wire hole. A fixing plate is provided to fix the U-shaped protector to the wire hole. The fixing plate is formed with a connecting hole to be connected with the trunk door.
Patent KR-20040025295-A (KR)
Title: Method for estimating credit and apparatus same
Inventor: LIM HYUN JIN
Filed: 2002-09-19
Abstract: PURPOSE: A method and a device for evaluating credit are provided to monitor a credit state multi-dimensionally evaluated from many persons by evaluating the credit with each other when a user and other user want the mutual multi-dimensional evaluation. CONSTITUTION: A member management database(22) stores basic member information, join request information, join information, and changed evaluation information. A credit information database(24) is equipped with regions for storing individual credit evaluation information evaluated between members. A credit evaluation server(26) transmits the default contents information related to the credit evaluation by responding to a client connected through a data network, and performs operations related to the credit evaluation by accessing the member management database and the credit information database according to an instruction from the client.
Patent KR-20040037728-A (KR)
Title: Variable intake device
Inventor: CHOI GWAN HO
IPC: F02B27/02
Filed: 2002-10-30
Abstract: PURPOSE: A variable suction device making use of exhaust pressure is provided to supply suction air in the optimum state according to the operation conditions of an engine, shorten the manufacturing process through reduction of the number of parts, and improve maintainability and durability. CONSTITUTION: A variable suction device making use of exhaust pressure includes a resonance tank and suction pipe(10) supplying suction air to an air filter. The resonance tank and suction pipe is formed in a bellows type and the inner volume is changed according to the variation of length. One side of a cylinder(11) having a piston(12) is connected to an exhaust pressure supply pipe(13) to which exhaust pressure is given and the piston comes in and out the cylinder according to a change of the exhaust pressure by the driving conditions of an engine. The inlet side of the resonance tank and suction pipe is fixed to the cylinder and the outlet side is combined to the piston. The length of the resonance tank and suction pipe is varied according to the movement of the piston and the inner volume is varied.
Patent KR-20040043712-A (KR)
Title: Door Handle for Vehicles
Inventor: SONG JAE BONG
IPC: E05B79/22
Filed: 2002-11-16
Abstract: PURPOSE: A door handle for a vehicle is provided to use conveniently by opening a door easily with one hand of a passenger while releasing locking of the door with inserting a press button to a slide hole by pushing the press button in holding the handle for opening the door. CONSTITUTION: A door handle comprises a handle cover(100) having a slide hole(120) formed in the upper part, and a grip(110) formed in the lower part of the slide hole; a handle cover board installed in the back of the handle cover; an arm(300) turned around a pivot(310) and installed in the upper part of the handle cover board; a cable(500) turning on and off the door lock with moving up and down in turning the arm; a press button(700) moving into and out of the slide hole to lift up and down the cable and turning the arm; and a button guide(400) moving the press button out of the slide hole by elastic force of a return spring(800) after moving the press button into the slide hole.
Patent KR-20040045122-A (KR)
Title: Automatic site connection and log-in system and registration and execution method using the same
Inventor: OH SEUNG JUN
IPC: G06F17/00
Filed: 2002-11-22
Abstract: PURPOSE: A system and a method for automatically connecting/logging-in to an Internet site, and the site registration method for automatic connection/login are provided to automatically perform the serial processes for connecting/logging in to the Internet site with a single click. CONSTITUTION: A managing server comprises an authentication module discriminating a user connecting to the managing server through an authentication procedure, a database module storing the authentication information of the user and the login information for each site registered by the user, and the first command module realizing an interface in response to a dynamic request of a client computer. A client part comprises an interface module, a detecting module detecting the start and the termination of a web browser, and a position and a related component of a login window on the web browser, and the second command module providing the interface with the managing server by request the channel connection to the first command module.
Patent KR-20040048085-A (KR)
Title: Automatic torsion control apparatus of automobile trunk lid
Inventor: LEE JUNG GEUN
IPC: B62D25/12
Filed: 2002-12-02
Abstract: PURPOSE: An automatic tension controller of a trunk lid for a vehicle is provided to offer the twisting power to a torsion bar to increase the tension of the torsion bar when the tension of the torsion bar is reduced. CONSTITUTION: An operating cylinder(30) having a load(32) is installed under a torsion bar(20) to offer the twisting power for increasing the tension of the torsion bar. A pressure generating cylinder(40) is connected with the operating cylinder through a connecting pipe(c). A check valve(50) is installed between the operating cylinder and the pressure generating cylinder to maintain the pressure toward the operating cylinder. A power offering device(60) is connected with the pressure generating cylinder to generate the hydraulic power by giving power to the pressure generating cylinder.
Patent KR-20040049557-A (KR)
Title: door open and close apparatus
Inventor: HWANG HYUN A
IPC: A47B96/00
Filed: 2002-12-06
Abstract: PURPOSE: A furniture door opening/closing device is provided to help elderly people or children to more easily, conveniently open or close a furniture door, more particularly, a heavy furniture door. CONSTITUTION: The furniture door opening/closing device includes a first guide groove(14) formed at inner wall surfaces on both sides of the furniture(10); a second guide groove(15) longitudinally extended and tilted at a designated; a sliding bracket(20) having first and second guide projections(24,25) slidably movable on the first and second guide grooves(14,15), respectively; a cylinder(30) connected to the sliding bracket(20) and for compressing the sliding bracket(20) to move along the first and second guide grooves(14,15) in the rear upper direction; a closed section(12) formed at the front portion of the first guide groove(14); and an opened section(13) formed at the rear portion of the closed section(13).
Patent KR-20040050224-A (KR)
Title: device for recognizing voice in full automation-type washing machine
Inventor: CHOI SEONG BONG
IPC: D06F33/02
Filed: 2002-12-09
Abstract: PURPOSE: A voice recognition device of a full automatic washer is provided to enable sure voice recognition in spite of peripheral noise generated from the washer and operate the washer by a voice by applying voice recognition algorithm to the washer having a microphone built in. CONSTITUTION: A voice recognition device of a full automatic washer includes an adaptive filter part(21) and a voice recognition part(22). The adaptive filter part applies a noise signal produced from washer components or produced during water supply or water discharge to a voice recognition signal input from a microphone built in a washer body or a microphone built in a special remote controller, and outputs a voice recognition signal from which the noise signal is removed. The voice recognition part detects a voice section by receiving the voice recognition signal of the adaptive filter part and executing detection algorithm, extracts a feature by analyzing the detected voice signal, recognizes or rejects an input voice by comparing the extracted feature with a reference pattern or calculating the probability of a reference model, and applies the extracted feature value and the recognition result to a recognizer and executes the recognized result to a peripheral device.
Patent KR-20040053495-A (KR)
Title: Method for making substrate and method for making Organic electro luminescence display device using the same,Organic electro luminescence display device
Inventor: JUNG HO GYUN
IPC: H01L21/84
Filed: 2002-12-14
Abstract: PURPOSE: A method for manufacturing an organic EL device is provided to simplify a manufacturing process and improve productivity and reliability. CONSTITUTION: A method for manufacturing an organic EL device comprises a step of providing a non-flexible auxiliary substrate having a flat surface, a step of forming a first protection layer(53) on the top of the auxiliary substrate, a step of forming an organic electroluminescent unit(60) on the top of the first protection layer, a step of attaching a flexible main substrate(51) to the top of the organic electroluminescent unit, and a step of removing the auxiliary substrate though etching.
Patent KR-20040060513-A (KR)
Title: A Cutting-Oil Sealing Structure Of Turning Center
Inventor: JUNG CHEOL AN
IPC: B23Q11/00
Filed: 2002-12-30
Abstract: PURPOSE: A structure for sealing cutting oil for a turning center is provided to prevent the leakage of cutting oil by successively inserting a bush and a spring into an oil passage in a plug. CONSTITUTION: A bush(112) is inserted into a second oil passage in a plug(100), and is in contact with the inner circumference of a disk(200). A spring(111) is installed at the second oil passage, and is in contact with the bush to stick the bush fast to the inner circumference of the disk. A set screw(120) fixes the bush.
Patent KR-20020065504-A (KR)
Title: Method for characterizing and separating molecular associates
IPC: G01N33/537
Filed: 2000-11-03
Abstract: The present invention relates to a method for characterising and optionally separating molecular associates, especially particles having a size smaller than 300 nm. Partial units of the molecular associates are used as markers, whereby said units are marked with fluorescent dyes. The marked associates and aggregates are characterised by means of a FACS (fluorescence-activated cell sorter).
Patent KR-20020063229-A (KR)
IPC: C08G18/18
Filed: 2000-12-14
Abstract: 화학식 Ⅰ: 
     [화학식 Ⅰ] 
     R 1 R 2 N-X-OH(Ⅰ) 
     (식에서, R 1 및 R 2 는 각각 독립적으로 탄소수 1∼4의 알킬기, X는 탄소수 4∼8의 분지쇄의 알킬렌기를 나타냄)로 표시되는 디알킬아미노알킬알콜로 이루어진 폴리우레탄 제조용 촉매, 상기 폴리우레탄 제조용 촉매의 존재 하에서 폴리올 성분과 이소시아네이트 성분을 반응시키는 폴리우레탄의 제조법, 그리고 상기 폴리우레탄 제조용 촉매와 제 1 아미노기와 제 3 아미노기를 분자 내에 갖는 화합물을 함유하는 폴리우레탄 제조용 촉매 및 발포제의 존재 하에서 폴리올 성분과 이소시아네이트 성분을 반응시키는 폴리우레탄 폼의 제조법.      폴리우레탄은 건축재, 전기냉장고, 냉동창고, 욕조 등의 단열재, 자동차용 내장재나 가구, 침구 등의 쿠션재 및 각종 실링재 등으로서 사용할 수 있다.
Patent KR-20020069257-A (KR)
Title: 신규한 아릴프로피온알데히드 유도체, 이의 제조방법 및이의 용도
IPC: C07C39/11
Filed: 2001-01-12
Abstract: 본 발명에 따르면, 3-(3-메틸-4-하이드록시페닐)-3-메틸부티르산으로부터 카복실 그룹을 포르밀 그룹으로 변환시키는 반응에 의해 3-(3-메틸-4-하이드록시페닐)-3-메틸부틸알데히드가 제조된다.  당해 알데히드 유도체는 아스파르탐과의 환원적 알킬화 반응에 의해 용이하게 고감미도 감미료로서 유용한 N-[N-[3-(3-메틸-4-하이드록시페닐)-3-메틸부틸]-L-α-아스파르틸]-L-페닐알라닌 1-메틸 에스테르를 공업적으로 효율적이게 유도할 수 있으므로, 이의 제조 중간체로서 매우 우수하다. 
     상기 부티르산 유도체는 신규한 화합물이지만, 2-메톡시톨루엔과 3-메틸크로톤산과의 반응으로 수득되는 3-(3-메틸-4-메톡시페닐)-3-메틸부티르산으로부터 메톡시 그룹을 하이드록시 그룹으로 변환시키는 반응을 실시함으로써 용이하게 제조될 수 있다. 
     상기 알데히드 유도체 등, 제조 중간체로서 유용한 신규한 화합물도 몇 가지 제공된다.
Patent KR-20030016221-A (KR)
IPC: A61K8/85
Filed: 2001-11-29
Abstract: 본 발명은 네일 케어 제품에 관한 것이다. 
     본 발명의 목적은, 손톱에 칠하기 쉽고, 손톱에 도포된 피막 (도포막)의 강도, 광택이 우수하여, 또한 도포막이 시간 경과에 따라서도 박리되기 어렵고, 광택도 떨어지지 않는 용제계 네일 케어 제품를 제공하는 것이다. 
     과제를 해결하기 위해서 취한 수단은, (a) 니트로셀룰로오스, (b) 트리멜리트산 네오펜틸글리콜 아디프산폴리에스테르 수지, (c) 메타크릴산알킬ㆍ아크릴산알킬 함유 공중합체, 슈크로오즈 벤조에이트 및 유리 전이점이 50 내지 80 ℃인 고분자 화합물로 이루어지는 군에서 선택된 1종 또는 2종 이상, 및 (d) 용제를 포함하는 네일 케어 제품이다. 
     본 발명에 따르면, 손톱에 칠하기 쉽고, 손톱에 도포된 피막 (도포막)의 강도, 광택이 우수하고, 또한 도포막이 시간 경과에 따라서도 박리되기 어렵고, 광택도 떨어지지 않는 용제계 네일 케어 제품가 얻어지는 것이다.
Patent KR-20030015207-A (KR)
IPC: G01N21/95
Filed: 2001-03-07
Abstract: 물체를 화상으로 형성하기 위한 시스템이 설명된다.  이러한 시스템은 물체(210)를 조사하는 광원(200) 및 제1 파장을 갖는 광원(200)으로부터의 빛을 포함한다.  이러한 시스템은 화상 포획 장치(240) 및 필터 장치(220)를 더 포함한다.  필터 장치(220)는 제1 파장과 다른 파장을 갖는 빛을 전달시켜 제1 파장을 갖는 빛을 굴절시키고, 화상 포획 장치(240)는 필터 장치(220)를 통해 전송되는 빛을 사용하여 물체(210)의 적어도 일부의 화상을 포획한다.  이러한 시스템은 제1 광원(200)에 의한 조사와 동시에, 또는 제1 광원(200)에 의한 조사에 대해 연속적으로 물체를 조사하기 위한 암 영역 조사 시스템(400)을 더 포함한다.
Patent KR-20020092980-A (KR)
Title: 단방향 음향 프로브 및 그의 제조 방법
IPC: H04R31/00
Filed: 2001-03-09
Abstract: 본 발명은 고성능 상호접속 네트워크를 구비하는 단방향 음향 프로브, 및 이 프로브를 제조하는 방법에 관한 것이다.      본 발명의 단방향 음향 프로브는 유전체 막 (CIS) 표면상에 선형 압전 변환기 (TP i ) 를 구비하며, 상기 유전체 막은 상기 압전 변환기를 제어 장치에 전기접속하는 수단을 구비하며, 이 접속 수단은, 
     - 압전 변환기에 대향하는 1차 접속 패드; 
     - 상기 변환기가 제어 장치에 접속될 수 있도록, 압전 변환기에 대해 오프셋되어 있는 2차 접속 패드; 및 
     - 1차 접속 패드를 2차 접속 패드에 접속시키며 상기 압전 변환기의 장축에 의해 정의되는 방향 (D y ) 과 직교하는 방향 (D x ) 에 있는 도전성 트랙을 구비한다. 
     이러한 프로브는, 음파를 흡수하는 곡선형 지지부상에 프로브의 위치결정으로 구성되는 성형 단계 동안에, 형성된 상호접속 네트워크가 종래 기술에 따른 네트워크보다 더욱 견고하다는 장점을 제공한다. 
     본 발명의 음향 프로브는 초음파 진단법 프로브에 적용할 수 있다.
Patent KR-20020092982-A (KR)
Title: 수분을 비산화 기체로 전환하기 위한 시스템과 상기시스템을 포함하는 전자 장치
IPC: C23C16/32
Filed: 2002-01-15
Abstract: 수분을 환원 기체로 전환할 수 있는 시스템이 설명된다.  이런 시스템은 습기 민감성 전자 및 미세 전자 장치 내에서 사용될 수 있는데, 그 기능은 환원 기체와의 접촉에 의해 영향 받지 않는다; 보다 상세하게는, 본 발명에 따른 시스템은 전자 발광 유기 재료들을 포함하는, OLED로 알려진 스크린 내에서 사용될 수 있다.
Patent KR-20030011299-A (KR)
IPC: A61B50/36
Filed: 2001-04-13
Abstract: 본 발명은 상부요소에 의해 닫히는 저장소가 있고 상기 상부요소 안에는 개구부가 형성되어 있음을 특징으로 하는 폐기물, 특히 병원 폐기물 저장용기에 관한 것이다.  상기 용기는 하기를 포함한다: 적어도 하나의 구멍(24, 26)을 갖는 뚜껑(10); 잠금수단(24c, 26c)이 있는 자유단을 갖는 적어도 하나의 스터드(24a, 26a), 단, 상기 스터드는 상기 뚜껑(10)이 상기 개구부(12) 상의 닫히는 위치에 있을 때 상기 구멍(24, 26)을 통과할 수 있게 하면서 상기 구멍(24, 26)과 함께 작동하게 됨; 및, 상기 상부요소의 상기 잠금수단(24c, 26c)에 고정될 수 있는 역지 오리목(24b, 26b).
Patent KR-20020095216-A (KR)
Title: Branched hydroxyl-functional polyester resin and its use in aqueous cross-linkable binder compositions
Filed: 2001-04-13
Abstract: Branched hydroxyl-functional polyester resin having an average hydroxyl functionality of > 2, a hydroxyl number of 25 to 300 mg KOH/g, and a number average molecular weight within the range of from 500 to 3, 000, which polyester resin comprises polyalkylene oxide groups and, optionally, sulphonate groups, characterised in that the polyester resin comprises the reaction product of: 1) a mixture of carboxylic acids comprising 50 to 80 mole % of an m- and/or p-aromatic and/or cycloaliphatic dicarboxylic acid, 20 to 50 mole % of an aliphatic dicarboxylic acid and/or aliphatic monocarboxylic acid with more than 6 carbon atoms, and, optionally, a tri- or higher-functional acid; and 2) a mixture of alcohols comprising an aliphatic diol with at least 4 carbon atoms and/or a cycloaliphatic diol with at least 4 carbon atoms, a C 1-C4 alkoxy polyalkylene oxide glycol and/or C1- C4 alkoxy polyalkylene oxide 1,3-diol having a number average molecular weight of 500 to 3,000, and, optionally, a tri- or higher- functional polyalcohol, wherein the polyester resin has a carboxylic acid number of <= 20 mg KOH/g (<= 0.357 meq COOH groups per g of resin) and, optionally, a sulphonate number of <= 4 mg KOH/g (<= 0,070 meq sulphonate groups per g of resin), the acid groups being at least partly neutralised.
Patent KR-20030005289-A (KR)
IPC: C12N15/09
Filed: 2001-04-18
Abstract: 본 발명은 화학적 또는 효소적으로 분해되기 쉬운 핵산 프로브에 관한 것이다.  또한 본 발명은 표적 핵산 서열의 검출에서 상기 프로브를 사용하는 검정 및 방법에 관한 것이다.  분해성 프로브의 표적-특이적인 하이브리드화 영역 또는 표적-상보적인 영역은 분해 과정을 통해 검출될 수 있는 영역으로부터 분리될 수 있다.  분해성 프로브의 남아있는 부분은 쉽게 검출될 수 있다.  본원에 기술된 분해성 프로브의 사용은 핵산을 검출하는 검정 또는 방법에서 백그라운드 특이적이거나 비특이적인 시그널 생성을 감소시킴으로써 시그널 대 노이즈 비를 개선시킨다.
Patent KR-20030014281-A (KR)
IPC: G11B5/09
Filed: 2001-06-28
Abstract: 본 발명의 실시예는 채널-대-제어기 인터페이스의 여러 구성을 설명한다.  하나의 실시예에서, 인터페이스를 통과한 심벌의 폭은 고정되며, 클럭 레이트도 고정된다.  다른 실시예에서, 심벌 폭은 가변이며, 클럭 레이트는 또한 인터페이스 심벌의 크기 및 채널의 동작을 토대로 하여 가변된다.
Patent KR-20040063051-A (KR)
Inventor: LEE DAE GYO
IPC: H05B37/02
Filed: 2003-01-04
Abstract: PURPOSE: A wireless switching apparatus for controlling a lamp is provided to control a plurality of lamps at various places by using a wireless switch and a lamp controller. CONSTITUTION: A wireless switching apparatus for controlling a lamp includes a wireless switch and a lamp controller. The wireless switch includes a power transmission unit(11) for supplying a driving voltage, a transmission switch(12) for turning on and off a lamp, a buzzer(13) for generating the predetermined sound, a transmission control unit(14) for outputting a stored control code, and a transmission unit(15) for transmitting the control code to the lamp control unit. The lamp controller includes a receiving power supply for converting the AC power to the DC power, a memory for storing the control code, a memory switch for storing the control code into the memory, a lamp control unit for storing the control code as the reference control code and outputting a control signal for turning on and off the lamp. A switching unit is formed with a couple of triacs.
Patent KR-20040064791-A (KR)
Inventor: LEE DONG JOON
IPC: A62B9/06
Filed: 2003-01-10
Abstract: PURPOSE: A structure of oxygen supply equipment for feeding oxygen to nose is provided to be so equipped with a mask as to make attachment to and detachment from human face more easier and as to largely decrease the skin damage by wearing thereof with aid of good wearing feeling. CONSTITUTION: The structure of oxygen supply equipment for feeding oxygen to nose includes; a mask(2), surrounding nose; an adhering member(4), formed in a left and right projected manner as one body with the lower part of the mask(2), and adhered to the skin surface under nose; and oxygen supply hoses(6), arranged in a connected manner with the left and the right of the mask(2); wherein a soft elastic member(5) is attached to the contacting part with the nose underneath on the upper part of the adhering member(4) and a buffering member(7) arranged in a movable manner along the circumference of the oxygen supply hoses(6) and coming in contact with user's ear portion.
Patent KR-20040065918-A (KR)
Inventor: PARK JANG YEOL
IPC: B60P1/26
Filed: 2003-01-16
Abstract: PURPOSE: A stopper structure of a loading compartment is provided to facilitate the opening and shutting of a rear gate by installing fixing bars of a steel material to side gates and installing wires, hingably combined to the sides of the other ends of the fixing bars, to the rear gate. CONSTITUTION: A stopper(20) of a loading compartment fixes a rear gate(12) for opening and shutting the loading compartment of a vehicle, in an open state of a predetermined angle. The stopper structure of the loading compartment comprises a fixing bar(21) of a steel material mounted on a side gate(11), and a pair of wires(22). One end of the wire is combined with the end of the fixing bar and the other end of the wire is fixed to the side of the rear gate.
Patent KR-20030028776-A (KR)
Inventor: HONG MYEONG HUI
IPC: H04N5/225
Filed: 2003-01-20
Abstract: PURPOSE: A pixel arraying method in display of a full parallax three-dimensional image is provided to produce diamond pixels having a variety of shapes. CONSTITUTION: Cameras forming a specific diamond shape are selected from cameras arranged in two-dimension. A non-integer type diamond pixel is formed using images of the selected cameras. Pixels are grouped in a specific pattern in each view image to make an image having a diamond-shape pixel, and the image is integrated with other view images at a predetermined ratio to form an integer type diamond-shape pixel. Diamond pixels in an image pattern have the same shape. The boundary of each diamond pixel comes into contact with the boundary of neighboring diamond pixel to construct the image pattern without any gap.
Patent KR-20040069423-A (KR)
Inventor: SONG CHI HYEON
IPC: C08B37/00
Filed: 2003-01-29
Abstract: PURPOSE: An exo- and endo- polysaccharide derived from Ganoderma lucidum, its isolation method and a hyperlipidemia treating composition containing the polysaccharide are provided, to obtain a material having a hypolipidemic effect. CONSTITUTION: The exo-polysaccharide is isolated by inoculating the culture of Ganoderma lucidum to potato/dextrose broth (pH 4.5) and culturing it at 30 deg.C with 120 rpm for 7 days; pulverizing 50 mL of the cultured one under sterilization condition and inoculating the pulverized one to a medium in 1%(v/v); culturing the cultured one at 30 deg.C with 120 rpm for 18 days; centrifuging the liquid culture with 10,447 g for 20 min; mixing the supernatant with ethanol in the ratio of 1:4 to sediment it for a day and centrifuging it; lyophilizing the sediment, adding distilled water to the concentration of 10 mg/mL, and centrifuging the liquid culture with 10,447 g for 20 min; and dialyzing the supernatant for 3 days and lyophilizing it. The endo-polysaccharide is isolated by washing the mycelium obtained by centrifugation with distilled water three times, extracting it with hot water three times for 2 hours and centrifuging it with 10,447 g for 20 min instead of mixing the supernatant with ethanol in the ratio of 1:4 to sediment it for a day and centrifuging it in the previous method.
Patent KR-20040070850-A (KR)
Inventor: JANG HO NAM
IPC: C01B13/02
Filed: 2003-02-04
Abstract: PURPOSE: A method for producing useful compound using pure oxygen and a method for treating wastewater using pure oxygen are provided to improve economic efficiency of microbe used process by utilizing single or mixed process in the oxygen generation process, removing CO2 and water included in exhaust air of the microbe used process and recycling high concentration oxygen. CONSTITUTION: In a method for producing a useful compound by culturing microorganisms requiring oxygen, the method for producing the useful compound by microorganism cultivation using pure oxygen comprises a step of injecting pure oxygen into the microorganism cultivation process; a step of removing carbonic acid gas and obtaining pure oxygen by recirculating exhaust gas of the cultivation process into pressure swing adsorption system; a step of injecting the pure oxygen obtained in the above step into the microorganism cultivation process again; and a step of repeating the foregoing steps. In a method for treating wastewater using microorganisms requiring oxygen, the method for treating wastewater using pure oxygen comprises a step of injecting pure oxygen into the wastewater treatment process; a step of removing carbonic acid gas and obtaining pure oxygen by recirculating exhaust gas of the wastewater treatment process into pressure swing adsorption system; a step of injecting the pure oxygen obtained in the above step into the wastewater treatment process again; and a step of repeating the foregoing steps.