baber/WOPTO huggingface dataset:
Patent KR-20010092145-A (KR)
Title: Method for performing electronic commerce based on the local area
Inventor: OH KI HO
Filed: 2000-03-21
Abstract: PURPOSE: An electronic commerce transaction method based-on local area is provided to be connected to a region web server for being operation by a region unit and performing an electronic commerce transaction, receive a region specialization service corresponding to a corresponding region, and process settlement to the region specialization service by off-line. CONSTITUTION: A user resident at a region B is connected to a region web server through the Internet(S100). The user selects a video lending service among specialization services(S200). The user of the region B considers several situations, selects a suitable video lending store, and selects a video to want to be lent from the selected video lending store. Order information is transmitted to the video lending store, and the video lending store confirms the transmitted order information and lends the video to the user(S300).
Patent KR-20000049550-A (KR)
Inventor: CHOI HYUN SIK
IPC: H02B13/065
Filed: 2000-04-08
Abstract: PURPOSE: A system for controlling a distribution board in remote control is provided to reduce the constructing cost of a building by cheaply controlling the electric power of the equipments of the building. CONSTITUTION: A system for controlling a distribution board comprises a central controlling board(100) and a local controlling board(200) which is installed at the distribution board controlled by the central controlling board(100). The central controlling board(200) divides the local controlling board(200) of the distribution board to be controlled into several groups.
Patent KR-20000058360-A (KR)
Inventor: KANG DAE YEOL
IPC: A23L17/00
Filed: 2000-04-26
Abstract: PURPOSE: A method for preparing broiled fish paste containing seaweeds is provided to conveniently take up seaweeds, such as brown seaweed and sea tangle, useful to prevent skin disease, eye troubles, and osteoporosis by containing Ca. CONSTITUTION: In one embodiment, the method comprises the steps of (i) cutting 100 kg of brown seaweed having 60 % of moisture content into 5mm or shorter in length, and then grinding it; (ii) adding 25 kg of fish meat having 60 % of moisture content and 8 kg of wheat flour into the grinded seaweed, and then mixing the mixture for 5 min in a mixer; (iii) adding 7 kg of grinded onion having 50 % of moisture content and a little salt into the mixture, and then mixing it for 3 min; (iv) extruding the mixture with an extruder, and then cutting it to be 15 cm; (v) frying the extrudant at 200°C for 3 min; (vi) cooling the fried extrudant to 15°C; (vii) vacuum packing the cooled extrudant.
Patent KR-20010103944-A (KR)
Inventor: JEONG HUN
IPC: A01K5/00
Filed: 2000-05-12
Abstract: 본 발명은 가축용 사료 자동공급기에 관한 것으로서, 보다 상세하게는 설정된 시간마다 자동으로 사료를 공급시켜 줄 수 있으며 축사에 사육되는 가축 수에 따라 사료공급량을 독립적으로 조절 가능할 뿐만 아니라 사료공급시 가축의 식욕을 유도할 수 있는 가축용 사료 자동공급장치에 관한 것이다. 
     본 발명의 목적은 축사에 각각 설치된 사료공급기내에 항상 적절한 양의 사료가 공급될 수 있고, 또한 보관된 사료가 부패되거나 변질되는 일이 발생하지 않으며, 축사별로 사육되는 가축의 수나 성장정도에 따라 사료의 공급량 및 주기를 독립적으로 할 수 있음과 아울러 전체 축사의 사료공급주기를 설정하여 자동적으로 공급할 수 있어 가축사육에 따른 인력의 절감 및 관리의 효율성이 있는 사료 자동공급장치를 제공하는데 있다. 
     상기의 목적을 달성하기 위한 본 발명은, 사료보관통내의 사료를 공급관을 통하여 사료공급기내로 보충되도록 사료이송기 및 모터가 구비된 가축사료 공급장치에 있어서, 상기 사료공급기내에 설치되어 투입된 사료량을 검출하는 사료량 감지센서와, 공급된 사료의 부패나 변질을 방지시켜 주는 멸균램프등과, 가축사료의 공급주기를 임의로 설정할 수 있는 사료공급주기 설정부와, 가축사료 공급량을 설정하여 적정량의 사료를 먹이통내로 투출시켜 주는 사료 공급량 설정부와, 상기 사료 공급량 설정부의 조작에 따라 소정시간동안 회전스크류를 동작시켜 설정된 사료량 만큼 투출시키는 모터와, 사료공급시 사전에 식욕을 유도하도록 빛이나 소리를발생시켜 주는 식욕 유도램프 및 식욕 유도음악 발생부와, 사료공급시 공급된 사료의 종류 및 양에 따라 가축에게 적정량의 물을 자동으로 공급/배출시키는 물공급장치와, 상기 사료공급기의 전체 동작을 제어함과 아울러 사료이송기의 동작모터를 제어하는 메인콘트롤부로 이루어지는 것을 특징으로 한다.
Patent KR-20010029761-A (KR)
Title: Field emission display device using carbon nanotube and manufacturing method thereof
Inventor: LEE CHEOL JIN
IPC: H01J1/304
Filed: 2000-05-31
Abstract: PURPOSE: Provided is a field emission display device using a carbon nanotube having high density of tip, which contributes to great efficiency of luminescence and is useful in generating large discharge electricity even with small voltage. CONSTITUTION: A filed emission display device includes a first metal membrane (32), an insulated membrane (34a), second metal membrane (36a), conductive, polymerized membrane (42), carbon nanotube (44), spacer (48), and upper substrate (50). The first metal membrane (32) for cathode is attached to a lower substrate. The insulated membrane (34a) and second metal membrane (36a) formed on the first metal membrane (32) have several micro pores through which the first metal membrane (32) is exposed. And the conductive, polymerized membrane (42) is formed in the micro pores. The carbon nanotube (44) for emitter tip is vertically formed on the conductive, polymerized membrane (42). The spacer (48) is installed on the second metal membrane (36a) while the upper substrate (50) having transparent electrode and fluorescent material is attached to the spacer (48).
Patent KR-20010108749-A (KR)
Inventor: CHO JUN HUI
Filed: 2000-05-31
Abstract: 본 발명은 반도체 기술에 관한 것으로, 특히 캐패시터 유전체로 강유전체 박막을 사용하는 반도체 소자의 강유전체 캐패시터 및 그 형성방법에 관한 것으로, 강유전체 캐패시터 구조에 기인한 단차를 감소시키고, 정전용량을 증가시킬 수 있는 강유전체 캐패시터 및 그 형성방법을 제공하는 데 그 목적이 있다. 상기 목적을 달성하기 위한 본 발명은, 소정의 하부층 상에 제공되는 셀 플레이트 노드; 상기 셀 플레이트 노드 상부에 제공되며, 스토리지 노드 영역에 트렌치 구조를 가진 강유전체막; 및 하부면 및 측면이 상기 강유전체막과 접촉되도록 상기 트렌치 구조 내에 매립된 스토리지 노드를 포함하여 이루어진다. 또한, 본 발명은 소정의 하부공정이 진행된 하부층 상에 셀 플레이트 노드용 전도막을 형성하는 제1 단계; 상기 셀 플레이트 노드용 전도막 상부에 강유전체막을 형성하는 제2 단계; 스토리지 노드 형성 영역의 상기 강유전체막을 부분식각하여 트렌치 구조를 형성하는 제3 단계; 상기 트렌치 구조 내에 스토리지 노드용 전도막을 매립하는 제4 단계를 포함하여 이루어진다.
Patent KR-20010098327-A (KR)
Title: 반도체 칩의 실장방법
IPC: G11B5/00
Filed: 2000-06-05
Abstract: 본 발명은 하부충전(underfill)용 접착제를 먼저 넣고 IC 칩을 실장하는 반도체 칩의 실장방법에 관한 것으로, 하부충전물의 필렛(fillet) 형상을 양호하게 형성하는 것을 과제로 한다.     본 발명은, 범프를 갖는 헤드 IC 칩을 하부충전용 접착제가 도포된 패드를 갖는 서스펜션 상에 두고 본딩툴(bonding tool)로 가압하면서 초음파를 가하여 범프를 패드와 접합시키는 반도체 칩의 실장방법에 있어서, 가압하면서 초음파를 가할 때에 자외선(108)을 조사하여, 헤드 IC 칩(11)과 서스펜션(12)의 사이에서 눌려 퍼진 접착제(151)의 주위 부분(151a)을 경화시키는 것을 특징으로 한다.
Patent KR-20010111183-A (KR)
Inventor: LEE YONG HO
Filed: 2000-06-08
Abstract: 본 발명은 폴리테트라메틸렌테레프탈레이트를 통상의 폴리에틸렌테레프탈레이트와 10 ∼ 40중량% 혼합시킨 것을 고수축성 성분으로 하고, 통상의 폴리에틸렌 테레프탈레이트를 저수축성 성분으로 하여 복합방사한 것을 연신하여 제조하는 폴리에스터계 이수축혼섬사의 제조방법임. 
     본 발명으로 제조한 이수축혼섬사는 숭고성이 좋으며 염색 후에 은은한 투톤효과를 발현시킨다.
Patent KR-20010110899-A (KR)
Inventor: HA HONG GIL
Filed: 2000-06-09
Abstract: 본 발명에 의한 세탁기는, 베이스판넬의 하부에 착탈가능케 설치된 차음판을 구비한 세탁기에 있어서, 상기 차음판은, 그 상면에 빨래를 비벼서 빨 수 있는 다수의 마찰돌기가 일체로 구성됨을 특징으로 되어 있으므로, 차음판을 베이스판넬에 결합시 진동차단기능으로 사용할 수 있고, 차음판을 베이스판넬로부터 분리시 빨래판기능으로도 사용할 수 있어 별도로 빨래판을 구비하지 않아도 되는 것이다.
Patent KR-20010110942-A (KR)
Inventor: KIM HONG GYU
Filed: 2000-06-09
Abstract: 본 발명은 공기조화기 실외기의 컨트롤부에 캐피시터를 고정하기 위한 구조에 관한 것으로, 조립구조를 개선할 수 있는 컨트롤부의 구조에 관한 것이다. 
     본 발명에 의하면, 공기조화기 실외기의 컨트롤부를 구성하는 캐피시터(40)을 고정함에 있어서, 캐피시터(40)의 전,후방에 각각 형성된 테두리(40a)를 고정하기 위하여 컨트롤판넬(30)의 평면판(32)을 ㄷ자형태로 절개하여 비절개면을 기준으로 직각되게 상측으로 일체성형된 돌기(34a)와, 상기 돌기(34a)의 끝단을 절개부(34a) 방향으로 굽혀서 형성한 걸림턱(34b)을 가지는 한쌍의 걸림돌기(34)를 가진다.  그리고, 걸림돌기(34)에 끼워서 고정되는 캐피시터(40)의 몸체를 지지하기 위하여 컨트롤판넬(30)의 측면부(31)와 마주보게 평면판(32)을 ㄷ자형태로 절개하여 비절개면을 기준으로 직각되게 상측으로 일체성형된 지지편(36)을 구성한다.  캐피시터(40)를 컨트롤판넬(30)에 고정할 때, 상측에서 눌러 간단하게 체결할 수 있도록 걸림돌기(34)는 탄성을 가진다.  이로 인하여, 캐피시터의 고정 또는 분리를 쉽게 할 수 있게 된다.
Patent KR-20000058544-A (KR)
Inventor: PARK JONG WON
IPC: F16B2/14
Filed: 2000-06-13
Abstract: PURPOSE: An apparatus and a method for coupling an iron material by using a wedge are provided to simplify the coupling procedure of the iron material by attaching the wedges provided with elastic pieces to both surfaces of the iron material to insert in a coupling case instead of punching a hole in the iron material, thereby preventing decrease of the mechanical strength, energy absorbing performance, and fatigue strength due to repetitive load of the connecting part of the iron material. CONSTITUTION: An apparatus for coupling an iron material by using a wedge includes a pair of upper and lower wedges(23a,23b) respectively having a top surface of a low coefficient of friction and a bottom surface of a high coefficient of friction, elastic pieces(24) and a coupling case(25), so that the wedges are respectively coupled with the elastic pieces, attached to upper and lower surfaces of an iron joining element and then inserted into coupling holes of the coupling case, wherein tension-compression wedges are respectively coupled with the elastic pieces at both side surfaces, and shearing wedges are respectively coupled with the elastic pieces at a rear surface.
Patent KR-20010114070-A (KR)
Inventor: BAEK GI HO
IPC: C08L35/00
Filed: 2000-06-21
Abstract: 본 발명은 Tips 공정 (Top Surface Imaging Process)용 포토레지스트 중합체 및 이를 함유하는 포토레지스트 조성물에 관한 것으로, 하기 화학식 1로 표시되는 포토레지스트 중합체 및 이 중합체를 함유하는 본 발명의 포토레지스트 조성물은 노광 영역에서 선택적으로 보호기가 탈리되어 알콜기가 생성됨으로써 실릴화제로 처리하면, 이들 알콜기가 실릴화제와 반응하여 실릴레이션이 일어나게 된다.  따라서 건식 현상하면 노광 부분만 남게 되어 네거티브 패턴을 형성하게 된다.  또한 본 발명의 포토레지스트 조성물은 기판에 접착성이 우수하여 미세 패턴 형성시에도 패턴이 쓰러지지 않아 ArF (193nm), VUV (157nm) 및 EUV (13nm) 광원을 이용한 리소그래피 공정에 매우 유용하게 사용될 수 있다. 
     [화학식 1] 
     
       
     
     상기 식에서, X, Y 및 R 은 명세서에서 정의한 바와 같다.
Patent KR-20020000194-A (KR)
Title: Method cleaning Electro Luminescence Display using Laser and HCl Annealing
Inventor: CHOI SEUNG RAK
IPC: H01J1/30
Filed: 2000-06-23
Abstract: PURPOSE: An ELD cleaning method using a laser and an HCl annealing is provided to be capable of simplifying cleaning equipment, reducing cleaning costs and shortening cleaning time by making metal contaminants into metal organics through an annealing process under the diluted mixing gas atmosphere in which cleaning gas and inert gas are mixed and then removing the metal organics, and cleaning the PDP using a laser and nitrogen gas. CONSTITUTION: First, an ELD is automatically conveyed to a cleaning space. Then, metal contaminants are made into metal organics by annealing the ELD under the diluted mixing gas atmosphere in which cleaning gas and inert gas are mixed, thereby removing the metal organics. Next, contaminants absorbed to the ELD are separated by radiating a laser. Finally, the ELD is completely cleaned by injecting inert gas to the separated contaminants and then discharging the inert gas including the contaminants.
Patent KR-20020003708-A (KR)
Title: Vehicle Electric Power Simulating Method
Inventor: SUNWOO MYOUNG HO
IPC: H02J7/14
Filed: 2000-06-28
Abstract: PURPOSE: A method for simulating an electric energy of a vehicle is provided to easily check an electric energy condition of a vehicle and select an optimal generator capacity. CONSTITUTION: A simulation control part receives an information about the number of rotation of an engine per hour and whether a load is used, and calculates the maximum current generated in a generator part by using the inputted information(S21). The maximum current of the generator and a current that an electric load needs are compared with each other(S23). If the maximum current is greater than the electric load, an extra current is generated and becomes a charging current of a battery. A variation of charging rate of the battery is calculated by using the charging current(S26). If the maximum current is smaller than the electric load, difference is generated between the maximum current and the electric load. The difference becomes a charging current of the battery. The obtained variation of charging rate of the battery is added to a previous battery charging rate to attain a battery charging rate in a current sampling time. It is ascertained whether a simulation is finished(S28). If it is not finished, t is increased by 1 and a new t value is set(S29).
Patent KR-20000063346-A (KR)
Inventor: PARK SE JUN
IPC: B02C23/08
Filed: 2000-06-28
Abstract: PURPOSE: A removing device of a vinyl bag of food waste is provided which is able to easily remove the vinyl bag included in the food waste from the food waste in a pre-treating process of a system composting the food waste. CONSTITUTION: In a conventional treating device of food waste which selects vinyl bags through a crusher(3) among adulterated things such as food wastes and vinyl bags suppled through a hopper(1) and a fixed quantity supplier(2), the removing device of a vinyl bag of food waste comprises: (i) a hook(6) which collects the vinyl bags in a rotating belt(5); and (ii) a division device(7) which separates the vinyl bags caught by the hook(6) from the hook(6).
Patent KR-20020004226-A (KR)
Title: Spine treatment equipment
Inventor: NO JU SUK
IPC: A61F5/01
Filed: 2000-07-04
Abstract: PURPOSE: A spine treatment device is provided, of which electric bulbs are installed in the guiding empty space and in which the space is closed so that heating efficiency is enhanced and the safety hazards such as slipping of hands or legs into the space are eliminated while device is in operation. The user can also easily change these bulbs by himself. The device is operated by a patient himself and the massaging effect is always same in contrast with massaging by men because it is done mechanically. CONSTITUTION: The device comprises: a pair of case(1) which is covered by the mat externally, having a guiding empty space(2) in the middle in a length direction and is placed on the top of a base plate(3) of board plank type; a plate(10) whose front and rear side are fixed to the both ends of the above case(1), being situated inside the guiding empty space(2), being separated with a certain space and having a groove of a certain width on both sides; a rail situated, in a length direction, on the bottom side of the above guiding empty space, having up and down curved surface repeatedly; a treatment device(20) installed in the guiding space wrapping one part of the above plate and having up and down changing positions in contact with the above rail; and the moving part(30) which is situated at one side of the empty space in the above case and moving the treatment device(20) in front and backward direction by generating front and rear movement.
Patent KR-20020004596-A (KR)
Title: The keyphone system and controlling method which is converting arrival of the post using e-mail
Inventor: KIM HEON ROK
IPC: H04M1/00
Filed: 2000-07-06
Abstract: PURPOSE: A call forwarding keyphone system using electronic mail and a method for controlling thereof are provided so that a keyphone user can only respond to a necessary telephone call, without the necessity of unconditionally receiving termination-requested calls in real time. CONSTITUTION: A call forwarding keyphone system using electronic mail consists of an internal control part and an external connection part. The internal control part comprises a subscriber processing part(21), a memory device part(22), a switching part(24), a keyphone(25), and a central control part(24). The subscriber processing part(21) detects a keyphone subscriber's hook state and a button input state and transfers the detected signals to the central control part(24). The subscriber processing part(21) receives messages from the central control part(24) and executes various necessary functions. The memory device part(22) stores various information necessary for call processing. The switching part(24) controls switching between each part. The keyphone(25) is connected to the keyphone system for use. The central control part(24) controls each part so that it can execute necessary work. The external connection part comprises a trunk connection part(23) and a mail delivery program connection part(27). The trunk connection part(23) detects and transfers the signals supplied from a trunk line incoming from an external network. The mail delivery program connection part(27) covers an SMTP(Simple Mail Transfer Protocol).
Patent KR-20020006096-A (KR)
Title: Electric field supply-type moisture filter apparatus
Inventor: LEE BAEK SU
IPC: H01L21/00
Filed: 2000-07-11
Abstract: PURPOSE: An electric field-type apparatus for filtering moisture is provided to eliminate moisture particles, by inducing an electrode of a planar or cylindrical type to the atmosphere having moisture and air to apply direct current(DC) high electric field so that moisture particles having high resistivity migrates and is adhered to both electrodes. CONSTITUTION: Planar electrodes(10) having different polarities to absorb neighboring moisture are alternatively disposed. A high voltage supply unit(20) applies a high electric field to the planar electrodes. A resistor(40) controls current flowing between the planar electrodes and the high voltage supply unit.
Patent KR-20010066935-A (KR)
Inventor: SEKIYA TAKASHI
IPC: H02B11/167
Filed: 2000-07-18
Abstract: PURPOSE: To obtain a drawing-out device which can be used commonly to various sizes, independently of the size of individual drawn type electrical equipment. CONSTITUTION: A threaded rod 17, having an axial center in parallel with the draw-out direction of electrical equipment 1, is supported rotatably on the floor section 11a of a drawer type electrical equipment housing section 11 of a switchgear, and a nut 19 engaged with the lower part of the equipment 1 is screwed on the rod 17. When the rod 17 is rotated, the nut 19 moves, and the equipment 1 is driven in the inserting or draw-out direction.
Patent KR-20020008641-A (KR)
Title: Motor mounting structure for air-conditioner
Inventor: LEE BYEONG HWA
IPC: F24F1/00
Filed: 2000-07-24
Abstract: PURPOSE: Motor mounting structure of an air conditioner is provided to disperse vibration of a motor by assembling the motor in point-contacting a mounting member to a cabinet, and to reduce noise by damping the vibration. CONSTITUTION: A motor mounting system for an air conditioner is composed of a motor(15) rotating a blower fan to flow air, and a mounting member(11) fixing the motor in a cabinet(10). The blower fan is inserted to a rotating shaft of the motor in supplying power to flow air, and plural bolt assembling parts are formed in the opposite of the rotating shaft to assemble with the mounting member. A motor assembling unit is formed in the mounting member to assemble the motor, and the mounting member is installed in the cabinet. Plural welding parts(11c) are protruded in the mounting member to point-contact to the cabinet. The mounting member is spot welded into the cabinet with forming protruded welding parts in the mounting member. Vibration is reduced with distributing vibration from the motor by point-contact. Noise is reduced, and the life span of the product is lengthened.
Patent KR-20010067086-A (KR)
Inventor: HOSOTANI KAZUHIRO
IPC: B41J11/42
Filed: 2000-08-18
Abstract: PURPOSE: To prevent a lateral shift (banding) in the printed result and to achieve good printing quality. CONSTITUTION: A printing control device X makes a print head Y2 print by a unit of line along a lateral direction L with respect to a conveying direction F of a paper P. A data developing section 30 develops printing information to the paper P on a bitmap. As the bitmap data developed by the data developing section 30 is scanned by a rasterizing operation section 50, a printing section discriminating section 51 discriminates a non-printing section and a printing section, which are continuous in the conveying direction F of the paper P, with each other. A paper conveying control section 60 controls a paper conveyance amount of the paper P corresponding to the lengths of the non-printing section and printing section. A print head control section 61 controls so as not to divide the printing portion of one printing section into a plurality of lines by partially diving one line of printing operation by the print head Y2.
Patent KR-20020014904-A (KR)
Title: A hub locking release structure for tape recorder
Inventor: HONG SEONG HUI
IPC: G11B23/04
Filed: 2000-08-19
Abstract: PURPOSE: A hub unlocking structure of a tape recorder is provided to decrease the number of components and to simplify the assembling process by forming one body of deck and unlocking pin. CONSTITUTION: A hub unlocking structure of a tape recorder includes a release pin(110) integrally formed with a deck(100) on a main chassis(200). The release pin is formed integrally with the deck by cutting and bending a part of the bottom of the deck. Thereby, the component management and the assembling process of the hub unlocking structure are controlled easily. A corner of the release pin, contacted with a hub locking member of a tape cassette is preferably chamfered to remove burr at the corner cut from the deck of the release pin. Thus, the hub locking member is not damaged.
Patent KR-20020016124-A (KR)
Title: circuit for controlling common voltage in the Liquid Crystal Display
Inventor: LEE HYEONG SEOK
IPC: G05F1/648
Filed: 2000-08-24
Abstract: PURPOSE: A regulator circuit for common voltage of an LCD(liquid crystal display) is provided to finely regulate common voltage to minimize flicker by connecting a third resistance with a variable resistance in parallel connection. CONSTITUTION: A regulator circuit for common voltage of an LCD comprises a variable resistance(VR1) and a resistance(R1,R2,R3). The variable resistance regulates voltage of power source terminal so as to output common voltage to an output terminal. The resistance is connected with the variable resistance between the power source terminal and the output terminal in parallel connection. The power source terminal includes a constant-voltage terminal, an earth terminal, and a plurality of resistances serially connected with the variable resistance(VR1) between the constant-voltage terminal and the earth terminal.
Patent KR-20010067130-A (KR)
Inventor: HIROSE NAOKO
IPC: C07C271/16
Filed: 2000-08-30
Abstract: PURPOSE: Provided is a method for industrially producing highly pure (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoepoxide (crystal) or (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoalcohol. CONSTITUTION: The method for producing N-carbamate-protected beta -aminoepoxide crystal of the formula(2), comprises the following steps of: dissolving (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoalcohol containing at least the diastereomer as an impurity in a solvent comprising at least one or more selected from aromatic hydrocarbon solvent, saturated hydrocarbon solvent, aqueous mixture solvent, acetone and 2-propanol, to remove insoluble matters; treating the (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoalcohol with a base, thereby converting the N-carbamate-protected beta -aminoalcohol to (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoepoxide; treating the (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoepoxide containing at least the diastereomer as an impurity with an acid, thereby converting the diastereomer as an impurity to (4S, 5R) or (4R, 5S) oxazolidine-2-one derivative, and optionally separating and removing the resulting oxazolidine-2-one derivative in water or an aqueous mixture solvent; and crystallizing the (2R, 3S)- or (2S, 3R)-N-carbamate-protected beta -aminoepoxide in a mixture solvent of water and water-miscible organic solvent.
Patent KR-20020017419-A (KR)
Title: method for manufacturing of semiconductor device
Inventor: PARK JU SEOK
IPC: H01L21/316
Filed: 2000-08-30
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to effectively prevent voids in an interlayer dielectric by maximizing the distance between gate lines using a buffer oxide layer by a thermal oxidation. CONSTITUTION: An isolation layer(32) of an STI(Shallow Trench Isolation) structure is formed in a field region of a semiconductor substrate(31). A gate oxide(33) and a gate electrode(34) are sequentially formed in an active region of the substrate. An LDD(Lightly Doped Drain) region(36) is formed in the substrate by using the gate electrode(34) as a mask. Spacers(37) are formed at both sidewalls of the gate electrode(34). Then, source and drain regions(38) are formed by implanting heavily doped dopants into the substrate using the spacers(37) and the gate electrode(34) as a mask. By performing a thermal oxidation, a buffer oxide layer(39) is grown on the exposed substrate. Then, an interlayer dielectric(41) is formed on the entire surface of the resultant structure without generating voids.