baber/WOPTO huggingface dataset:
Patent KR-20010057707-A (KR)
Title: Method for forming gate electrode
Inventor: CHOI BYEONG YEOL
IPC: H01L21/3205
Filed: 1999-12-23
Abstract: PURPOSE: A method for forming a gate electrode is provided to prevent generation of short by widening the thickness of an oxide film between the top of a tungsten-silicide layer and a pad poly. CONSTITUTION: A method for forming a gate electrode sequentially forms a gate oxide film(203), a polysilicon layer(205), a tungsten-silicide layer(207) and an insulating layer(209) on a semiconductor substrate(201). A photosensitive pattern(211) is formed on the insulating layer(209). The insulating layer(209) is etched using the photosensitive pattern as a mask and is then removed. The exposed surface of the tungsten-silicide layer(207) is processed by isotropic dry etching using the remaining insulating layer as an etch mask to form an under-cut(213) at the bottom of an edge of the insulating layer. The insulating layer(209) is processed by isotropic etch process using the etch mask in order to sequentially etch the tungsten-silicide layer and the polysilicon layer and to then form a gate electrode layer(215).
Patent KR-20010058430-A (KR)
Inventor: KIM SO YEON
IPC: G11C11/407
Filed: 1999-12-27
Abstract: PURPOSE: A redundancy circuit of a DRAM having a fail bank is provided to realize a bit completely by assembling chips having a fail bank properly and converting the fail bank into a good bank coding, in order to increase a yield. CONSTITUTION: A fuse logic part(10-40) generates a bank selection signal(BS) to activate a coding of a fail bank inputted from the external by cutting a fuse of a good bank while amending the fail bank with the good bank. And a bank coding part(50-80) disables the fail bank by assembling the bank selection signal generated from the fuse logic part and a disable bank signal(DB) according to the state of a bank and activates the good bank. The fuse logic part comprises a fuse connected to a supply power terminal, an inverter(I) inverting a signal being output through the fuse, the first transmission gate(T1) supplying or blocking the bank selection signal by being turned on/off according to an output signal of the fuse, and the second transmission gate(T2) supplies or blocks the bank selection signal by being turned on/off according to an output signal of the inverter.
Patent KR-20010061256-A (KR)
Inventor: AHN CHEOL O
IPC: F25D17/00
Filed: 1999-12-28
Abstract: PURPOSE: A cooling air circulation structure for refrigerator is provided to reduce energy loss and noise by preventing the cooling air discharged from the blower fan from being collided against the grille fan. CONSTITUTION: A grille fan(7) is arranged at the rear surface of a freezing compartment(3), and an evaporator(9) and a blower fan(30) are arranged in the space between the grille fan and the rear wall of the freezing compartment. A radial fan, rather than an axial flow fan, is employed as the blower fan. The radial fan is a turbo fan having a backward curved blade, and which sucks cooling air in the direction parallel to the rotating shaft and discharges the cooling air in a radial direction. A shroud(15) is arranged in the rear of the turbo fan, so as to form an inlet port for the turbo fan, and the grille fan is arranged in front of the turbo fan so as to recover the constant pressure. The turbo fan is connected to a motor(11). Thus, collision of the cooling air discharged from the blower fan, against the grille fan is avoided.
Patent KR-20010061641-A (KR)
Inventor: HONG SUN TAEK
IPC: G01N29/04
Filed: 1999-12-28
Abstract: PURPOSE: A non-destructive measuring method is provided to measure the crystal grain size of a ferrite from a damping change and the correlation of the average crystal grain size by using an ultrasonic damping coefficient. CONSTITUTION: A damping coefficient(alpha) of a carbon steel is measured by using an ultrasonic probe. Herein, the carbon steel has a two-phase complex structure with ferrite and perlite. The measured damping coefficient is put into a formula to calculate the crystal grain size of the ferrite. The formula is as follow. D = "1.79" + 22.97 * alpha¬1/b. Herein, the b is 2.02 to 2.04. A standard deviation is 0.95.
Patent KR-20010064652-A (KR)
Inventor: KIM JEONG MIN
IPC: H04N7/14
Filed: 1999-12-29
Abstract: PURPOSE: A transmission speed regulation method for a video communication device using wavelet coding and a regulating apparatus thereof are provided to offer an improved coding and decoding time of still image and improved image quality by using characteristics of wavelet transform coefficients. CONSTITUTION: Wavelet transform is performed for a captured video image. Data compaction is performed for each byte generated starting from the MSB(most significant bit) while detecting the bit rate for the wavelet-transformed data. The compaction ratio is adjusted and set up by the user, it is determined if the compaction ratio is satisfactory.
Patent KR-20010059665-A (KR)
Inventor: LEE GWON UI
IPC: H04B7/26
Filed: 1999-12-30
Abstract: PURPOSE: A call connection method in a radio terminal is provided to transfer a destination for a call made to a terminal by storing time requesting a destination transfer and a phone number and transferring the destination to a previously stored phone number for a call made at a pre-set time zone. CONSTITUTION: A controller checks whether a call message is received(310). When a call message is received, the controller checks whether a destination transfer has been set(320). In case that the destination transfer has been set, the controller checks whether the current time is in a time zone that the destination transfer is requested(330). If the current time is in the time zone that the destination transfer is requested, the controller transmits a message requesting a stored phone number and the destination transfer to a base station, so that the destination transfer can be performed(340).
Patent KR-20010066139-A (KR)
Inventor: KIM JUN MYEONG
IPC: H01L21/31
Filed: 1999-12-31
Abstract: PURPOSE: An apparatus for fabricating semiconductor device is to prevent deformation of an insulating layer to extend a life span of a chuck used in the apparatus, and also prevent a wafer from coming off the chuck. CONSTITUTION: An insulating layer(12) is bonded on a chuck(11). A substrate(13) is put on the chuck. In case of an electrostatic chuck, the substrate is electrically charged with a negative electrode. The chuck is charged with a positive electrode. The substrate and the chuck are insulated to each other by the insulating layer so that the substrate is fixed to the chuck. A cooling pipe(14) is formed at an inner portion of the chuck. A plurality of openings is formed at the insulating layer and an upper portion of the chuck to be connected to the cooling pipe. Therefore, cooling gas is introduced through the cooling pipe and the openings into a space between the substrate and the insulating layer to cool the substrate. The insulating layer has a smaller size than the chuck.
Patent KR-20000067861-A (KR)
Title: 가스 배리어성 복합필름
IPC: B32B27/08
Filed: 1997-06-23
Abstract: 하기 화학식 1 
     [화학식 1] 
     
       
     
     로 표현되는 반복단위를 60 중량% 이상 함유하는 폴리글리콜산으로 형성된 필름의 적어도 한쪽면에 열가소성 수지 필름이 적층된 층구성을 함유하는 것을 특징으로 하는 산소 가스 배리어성 및/또는 탄산 가스 배리어성이 우수한 가스 배리어성 복합필름.
Patent KR-20000068424-A (KR)
IPC: C08F4/659
Filed: 1997-09-04
Abstract: 본 발명은 13 C NMR 스펙트럼에서 특징적인 신호를 나타내는 α-올레핀/비닐 방향족 단량체 상호중합체에 관한 것이다.  특히, 본 발명의 에틸렌/스티렌 공중합체는 13 C-NMR 스펙트럼에서 화학 시프트 영역이 43.70 내지 44.25ppm, 바람직하게는 43.75 내지 44.25 ppm 및 38.0 내지 38.5 ppm에서 피크를 나타내고, 이때 이 피크는 피크 잡음에 비해 3배 이상인 피크이다.  상호중합체는 라세믹-(디메틸실란디일(2-메틸-4-페닐인데닐)지르코늄 디클로라이드와 같은 촉매의 존재하에서 단량체의 적당한 혼합물을 중합시킴으로써 제조된다.  본 발명의 중합체는 비교할만한 방향족 단량체의 함량에서 인장력/변형율 및 동적 기계 결과로 측정되는 바와 같이 탄성율이 증대되었다.
Patent KR-20000068837-A (KR)
Title: 아미노페놀 유도체 및 이의 화장품에의 용도
IPC: C07J9/00
Filed: 1998-08-26
Abstract: 본 발명은 하기 화학식 I 의 신규 아미노페놀 유도체, 이를 함유한 조성물, 및 인간 피부, 털 및/또는 이의 조성물중 모발용 탈색 및/또는 표백제로서의 용도에 관한 것이다: 
     [화학식 I] 
     
       
     
     본 발명은 또한, 상기 신규 화합물을 함유한 조성물을 인간 피부, 털 및/또는 모발에 적용하는 것으로 구성된, 피부, 털 및/또는 모발의 탈색 및/또는 표백 방법에 관한 것이다.
Patent KR-20000069069-A (KR)
Title: 조절가능한 충전 패턴을 갖는 흡수용품
IPC: A61F13/534
Filed: 1997-11-21
Abstract: 거의 동일한 크기의 중앙 대역, 2개의 중간 대역 및 2개의 말단 대역으로 구분될 수 있으며, 배설한 지 30분 후에 하나 이상의 말단 대역에 저장된 액체의 양에 대한 중앙 대역에 저장된 액체의 양의 비가 5:1 미만인 개인 위생용품용 흡수체가 제공된다.  이러한 흡수체는 기저귀, 배변 연습용 팬츠, 여성 위생용품, 흡수성 속팬츠, 성인 실금용 제품 등과 같은 개인 위생용품에 사용될 수 있다.
Patent KR-20010005983-A (KR)
IPC: G11C5/04
Filed: 1998-04-03
Abstract: 3차원구조(3DS) 메모리(100)는 다른 층상에서 메모리 회로(103)와 제어 로직 회로(101)간의 물리적 분리를 허용함으로써 각 층이 독립적으로 최적화될 수 있다. 하나의 제어 로직 회로(101)가 감소된 비용으로 수개의 메모리 회로(103)들을 만족시킨다. 3차원구조 메모리(100)의 제작은 메모리 회로(103)를 두께 50 마이크론 이하로 씨닝하고, 아직 웨이퍼 기판 형태인 회로 스택에 접착시키는 것을 포함한다. 고밀도 미립자로 된 층간 수직 버스 배선(105)이 사용된다. 3차원구조 메모리(100)의 제작방법은 몇가지 성능 및 물리적 크기의 효율화를 달성하였으며, 이미 정립된 반도체 공정기술로 실시되어진다.
Patent KR-20010012343-A (KR)
Title: 폴리싱 장치
IPC: B24B37/10
Filed: 1999-03-09
Abstract: 본 발명은 반도체 웨이퍼 등의 폴리싱 대상물을 연마하는 폴리싱장치에 관한 것이다.  폴리싱장치는 반도체 웨이퍼(6)를 연마하는 연마부(1)와 연마후의 반도체 웨이퍼를 세정하는 세정부(10)로 이루어지는 처리부와, 처리부에 연마해야 할 반도체 웨이퍼(6)를 공급함과 동시에, 연마후의 반도체 웨이퍼(6)를 받아들이는 수용부(40)와, 처리부와 수용부와의 사이에 양쪽부를 나눈 셔터(22, 24)부착의 격벽(102, 103)에 의하여 구획된 청정실(20 )을 구비하고 있다.
Patent KR-20010012430-A (KR)
IPC: G06T1/00
Filed: 1999-03-11
Abstract: A two-dimensional photosensor is formed on a surface light source, and a transparent conductive layer made of ITO or the like is formed on the two-dimensional photosensor. The transparent conductive layer dissipates static electricity and is grounded. Even if a finger in contact with the transparent conductive layer on the two-dimensional photosensor is charged with static electricity, this static electricity can dissipate via the transparent conductive layer. When the transparent conductive layer is divided into two layers, and the finger simultaneously touches the two transparent conductive layers, a fingerprint reading start signal is obtained. Even if, therefore, the finger is charged with static electricity, the two-dimensional photosensor can be prevented from malfunction or damage by the static electricity. When a target object in contact between the transparent conductive layers is a copy having a different resistance value, reading is not performed, and the reliability can improve.
Patent KR-20010014239-A (KR)
Title: 금속 섬유를 포함하는 강화 편성 조직
IPC: D04B1/14
Filed: 1998-07-08
Abstract: 본  발명은  스테인리스  강섬유  속을  포함하는  단일-베드  위편  직물  조직과  관련이  있는데,  이  조직내에는  180 텍스  보다  더  작은  호수의  보강용  다필라멘트  첨사가  규칙적인  무늬로  직물  조직내로  턱편직에  의해  혼합된다.         첨사는  예로서  다필라멘트  스테인리스  강사  또는  다필라멘트  유리  섬유사이다.          또한,  본  발명은  유리판  성형  공정에서  또는  성형  공정시  유리판  운송  수단의  덮개용으로  사용되는  덮개  주형  및  템퍼링  또는  프레스  링용  직물  조직의  용도와  관련이  있다.
Patent KR-20010014353-A (KR)
IPC: B22F5/10
Filed: 1998-06-18
Abstract: A method wherein a superhard abrasive material is sintered and simultaneously bonded to a sintered cemented carbide body inside a container under elevated pressure and temperature conditions (HP/HT-treatment), whereby said cemented carbide body is in contact with at least one other cemented carbide body which after the sintering is removed, is disclosed. At least the cemented carbide surfaces in contact with each other during the HP/HT-treatment is at least one coated with a 1-10 mum thick layer of a refractory oxide. The method is particularly applicable for making cemented carbide cutting inserts provided a superabrasive material and with a hole for clamping to a tool holder whereby said hole is filled with a cemented carbide plug during the HP/HT-treatment and removed thereafter. Preferably, both the plug and the insert blank are coated.
Patent KR-20010012155-A (KR)
Inventor: SHAH SYED MUZAFAR
IPC: A61P19/08
Filed: 1998-04-28
Abstract: This invention provides 3beta-hydroxy-5,7,9-estratriene-17-one and a pharmaceutically acceptable salt of its 3-sulfate ester, which is useful as an estrogen.
Patent KR-20010069009-A (KR)
Title: Device for externally hanging speaker on computer monitor
Inventor: HAN SANG HYEON
IPC: G06F1/16
Filed: 2000-01-11
Abstract: PURPOSE: A device for engaging a speaker at the exterior of a computer monitor is provided to detach a speaker to a computer monitor easily and to change the location of the speaker. CONSTITUTION: The first hole(30) and the second hole(34) are separately formed at one surface of a computer monitor(20), respectively. An insertion protrusion(44) is formed compared to the lower surface of a speaker(40) and installed at the lower surface of the speaker(40) for inserting into the first hole(30). A locking member(50) is formed compared to the lower surface of a speaker(40) and installed at the speaker(40) for inserting into the second hole(34). In addition, the locking member(50) is hinged moved for making the speaker(40) be fixed at one surface of the computer monitor(20). The elements of the locking member(50) are described as follows. The first and second rib are formed in the speaker(40) separately thereto. A supporting plate has a hole and a portion cut from the hole to the edge thereof and is installed at the first and second rib. An operating lever has a shaft being installed in the hole through the cut portion.
Patent KR-20000030181-A (KR)
Inventor: JEONG SANG EUN
IPC: G06F17/00
Filed: 2000-01-26
Abstract: PURPOSE: A voice card automatic transmission system using internet is provided to transmit a voice message of an orderer to the other party by mutually connecting a voice recording program, a voice card and a home page. CONSTITUTION: A voice card automatic transmission system includes a home page(40)connecting an orderer to a voice card(80), a storage media and visually showing voice card automatic transmission system information and voice data transmission/reception, and a server storing the voice file of the home page and the orderer, forming a controller(50), and storing the contents of the home page. The voice card automatic transmission system also includes the controller(50) generating a DTR signal connecting the server and the voice card (80) to each other to record the voice file from the home page(40) in the voice card. In the system a DTR generating part (70) producing a control signal DTR for recording an orderer's voice to a voice card is included. A speaker(70) is also included in the system.
Patent KR-20000024389-A (KR)
Inventor: SONG BOG HUN
IPC: E04D11/02
Filed: 2000-02-11
Abstract: PURPOSE: A composite waterproofing method is provided to secure perfect waterproof without breaking the waterproof layer of an upper part even if a crack is generated on a concrete structure. CONSTITUTION: A waterproof layer is formed on a concrete by infiltrating a waterproof agent to the porosity of concrete by spreading the waterproof agent for infiltrating on the concrete surface while increasing the compressive strength of the surface layer of a concrete structure. A filming agent of rubber asphalt class is spread for having excellent waterproofness and adhesiveness after hardening the surface of the concrete having the waterproof layer for infiltrating to densely attach a waterproof sheet. Herein, the part overlapped with waterproof sheets needs to be overlapped to be at least 100mm, and the perfect adhesiveness between waterproof sheets needs to be performed by the filming agent.
Patent KR-20010081579-A (KR)
Title: liquid crystal display device and fabrication method thereof
Inventor: KIM JONG SEONG
IPC: G02F1/136
Filed: 2000-02-16
Abstract: PURPOSE: An LCD and a method for manufacturing the same are provided to simplify a manufacturing process by reducing the number of mask. CONSTITUTION: A gate electrode(102) and a gate line(100a) are formed by depositing and patterning the first metal layer on a substrate. An insulating layer(132), a pure amorphous silicon(134a), a doped amorphous silicon, and the second metal layer are formed sequentially on the whole face of the first metal layer and the substrate. A source electrode(114), a drain electrode, and a capacitor electrode(120) are formed by patterning the second metal layer. An insulating layer is deposited on the second metal layer. A passivation layer(136) is formed thereon. A pixel electrode(118) and an etching barrier(124) are formed by depositing and patterning a transparent conductive material on the whole face of the passivation layer(136) and the substrate. The exposed amorphous silicon(134a) is etched by using the patterned transparent conductive material as a mask.
Patent KR-20010084291-A (KR)
Inventor: CHOI JONG HYEON
IPC: G11C29/00
Filed: 2000-02-24
Abstract: PURPOSE: A semiconductor memory device is provided, which can judge a fail of a memory cell during a write operation by controlling a precharge operation when testing the semiconductor device operating at a high frequency with a low frequency apparatus. CONSTITUTION: The device comprises an active precharge signal generator(30), a mode signal generator(32), a PMOS transistor(P) and a latch(34) comprising inverters(I1,I2). A WCBR state is set if an inverted row address strobe signal(RASB) of a low level, an inverted column address strobe signal(CASB), an inverted write enable signal(WEB) and an inverted chip selection signal(CSB) are applied, and if a specific address is applied under the above state, the mode signal generator activates a signal(MRS_RDL) to a high level. The active precharge signal generator generates a pulse signal(PRDL) which is transitted to a high level after being transitted to a low level in response to a signal(TCKE) or a signal(TWE) if the signal(MRS_RDL) is activated to a high level. The PMOS transistor makes a signal(PRB) transit to a high level by being turned on in response to the pulse signal of a low level. The latch inverts and latches the signal(PRB). A row address latch(16) outputs a signal(LRAi) by latching a row address(RAi) in response to a signal(PR) of a high level, and outputs a signal(LRAi) of a low level in response to the signal(PR) of a low level.
Patent KR-20010092855-A (KR)
Title: Method for detecting voltage sag by using wavelet transform
Inventor: KIM CHUL HWAN
IPC: G01R13/34
Filed: 2000-03-27
Abstract: PURPOSE: A method for detecting a voltage sag using wavelet transform is provided to detect a voltage sag related to the quality of electric power in a power distribution system by using a discrete wavelet transform method to increase an operating speed. CONSTITUTION: A modeling process for a voltage sag is performed by using an EMTP(ElectroMagnetic Transient Program) and a voltage obtained from the modeling process is inputted(S1). A 16-bit A/D conversion process for the voltage is performed(S2). A low pass filtering process is performed by using a low pass filter(S3). A discrete wavelet transform process for the filtered signal is performed(S4). A voltage sag is detected by using a voltage sag algorithm(S5).
Patent KR-20000037093-A (KR)
Inventor: HONG SUK JU
IPC: D06M11/83
Filed: 2000-04-07
Abstract: PURPOSE: A process for forming plating on textile surface is provided which has homogeneous plating and rapid production rate by using sputtering equipment. CONSTITUTION: A process for forming plating on textile surface is consisted of following steps: supplying a winded textile to ion sputtering portion at inert gas plasma atmosphere; sputtering a target portion by using the inert gas plasma to form a plating; and then winding a plating formed textile to form a plating on textile surface. The winded textile on supplying roller is a polyester fiber, and the polyester fiber is a flame retardant fiber. The flame retardant polyester fiber is consisted of copolymerizing phosphorus on polyester repeating unit. The inert gas is an argon.
Patent KR-20010097053-A (KR)
Inventor: KWON O JIN
IPC: H04N19/60
Filed: 2000-04-19
Abstract: 본 발명은 영상을 다양한 형태로 대역 분할한 후, 대역 분할된 영상의 통계학적 성질을 이용함으로써 영역 적응성 대역 분할 영상 압축 방법을 실현한 것이다. 
     대역 분할에 대한 입력신호가 단위 계단 함수일 때 얻어지는 분석적인결과를 토대로, 대역 분할된 영상 에너지는 저주파 대역과 "윤곽선 영역"에 집중되고, "윤곽선 영역"에서 에너지는 윤곽선의 방향과 매우 밀접한 관계를 갖는 성질을 발견하였다. 이러한 현상과 본 발명에서 제안하는 주파수 영역에서 수행되는 이상적인 분석/합성 필터링에 기초하여, 영역 적응성 대역 분할 영상 압축 방법은 각 대역의 임의의 모양 영역을 추출하고 각 영역별로 영상을 일반적인 가우시안 분포 데이터로 모델링한 후 적응성 엔트로피 제한 양자화기를 사용한다. 본 발명에서는 또한 모든 가능한 대역 분할 방식 중에서 최적의 대역 분할 방식을 결정하는 방법을 제공 한다.
Patent KR-20010098281-A (KR)
Inventor: KWON SANG OK
IPC: F24H1/00
Filed: 2000-04-29
Abstract: 본 발명은 공기조화기에 관한 것으로서, 특히 공기조화기가 설치되는 천정벽과 천정면 사이의 높이가 작은 건물에 설치되는 천정카세트형 공기조화기에 관한 것이다. 
     이러한 천정카세트형 공기조화기는 천정벽에 고정되고 송풍기와 열교환기가 내장된 공기조화기 본체와, 상기 본체의 저면에 설치되어 실내공기가 통과하는 프론트 패널과, 상기 본체의 높이가 상기 천정벽과 천정면 사이의 높이를 초과하여 상기 본체의 하부와 프론트 패널이 실내측으로 돌출되어 상기 천정면과 프론트 패널 사이에 형성되는 틈을 막기 위해 상기 프론트 패널에 설치된 커버패널로 구성된 것을 특징으로 한다.
Patent KR-20010103270-A (KR)
Inventor: KIM DONG WON
Filed: 2000-05-09
Abstract: 본 발명은 조건 응대형 팬 메일 저작기를 통해 메일을 보내온 팬들에게 최적화된 스타의 회신용 편지를 팬들이 직접 받을 수 있는 우편으로 발송하도록 하는 시스템을 구축하여 회신용 편지를 광고의 매체로 활용하는 모델로 제시함으로써 광고주들에게 타겟 마케팅 기회를 제공하도록 하고, 이를 통한 수익모델을 형성토록 하며, 스타이미지 관리 및 이를 활용한 스타쇼핑몰을 제공하기 위한 것으로서, 이를 구현하기 위한 구성은, 스타에 대한 접근채널, 스타에 대한 팬관리 및 스타의 가치 형성을 제공하는 메인서버; 상기 메인서버에 접속하여 스타를 캐스팅하거나 스타에 대한 정보를 제공하는 업체컴퓨터; 및 상기 스타중에서 팬들이 원하는 스타에 팬레터를 이메일로 전송하고, 상기 스타에 대한 정보를 제공받는 사용자컴퓨터를 포함하고, 상기 메인서버와 상기 업체컴퓨터와 상기 사용자 컴퓨터는 네트워크를 통해 접속되고, 상기 메인서버는 상기 스타에 대한 스타를 관리하고 홍보하기 위하여 스타에 대한 정보를 저장하는 스타관리 데이터베이스; 상기 스타에 대한 팬클럽을 관리하는 팬클럽관리 데이터베이스; 및 상기 스타에게 보내진 팬레터에 대한 내용 조건을 처리하고, 상기 팬레터에 대한 답장을 최적화하여 저장하고, 상기 최적화된 답장을 상기 팬들에게 전송하는 팬메일링서비스수단을 포함함을 특징으로 한다.
Patent KR-20010103460-A (KR)
Inventor: CHOI SANG JUN
Filed: 2000-05-10
Abstract: 본 발명은 (1) 기계식 교반기, 질소가스 주입구, 적하탱크 및 온도조절장치가 구비된 반응기에 황산알루미늄, 폴리염화알루미늄(PAC), 폴리염화알루미늄규산 (PACS), 폴리황산규산알루미늄(PASS), 염화제일철(FeCl 2 ), 염화제이철(FeCl 3 ), 황산제일철(FeSO 4 ), 황산제이철(Fe 2 (SO) 4 ), 폴리황산철(PFC), 폴리염화철(PFS)로부터 선택되는 1종의 무기응집제를 투입하는 단계; (2) 상기 반응기의 온도를 20∼50℃로 유지하면서 폴리아민계 고분자 응집제를 상기 적하탱크를 사용하여 상기 반응기에 1∼5 시간에 걸쳐 적하하는 단계; 및 (3) 상기 반응기의 온도를 50∼90℃로 유지하면서 3∼5시간동안 균일하게 교반하는 단계;로 이루어짐을 특징으로 하는 정수처리용 응집제 조성물의 제조방법과 그에 의해 제조된 응집제 조성물에 관한 것으로, 본발명에 의해 기존 무기응집제보다 효율이 좋으면서도 추가의 설비를 요하지 않고 정수 처리가 가능한 2성분 1액형 응집제 조성물을 제공할 수 있다.
Patent KR-20010105614-A (KR)
Title: Centrifugal fan
Inventor: KIM SEUNG CHEON
IPC: F04D29/42
Filed: 2000-05-16
Abstract: A marking method for forming a mark on the surface of an object to be marked by putting together the object of, e.g., a transparent body on which a pattern of characters, etc. are formed, and a marking material, and scanning the marking material with a laser beam, comprising a first step of irradiating the marking material with a laser beam of a first laser power and evaporating the marking material to form a deposit of the marking material on a predetermined portion of the object, and a second step of removing or modifying the deposit by irradiating the deposit with a laser beam of a second laser power. Steel or stainless steel is used as the marking material.
Patent KR-20010105837-A (KR)
Title: Oven locking device of Electric rice cooker
Inventor: CHA JAE DEOK
IPC: A47J27/08
Filed: 2000-05-18
Abstract: Disclosed is an amplifier module suitable for automated mounting and connecting to a motherboard of a cellular phone. The amplifier module comprises a substrate which has at least two layers of electrically conducting material. On the substrate, a first and second semiconductor chip are mounted. The first semiconductor chip includes a first integrated circuit which forms part of a first power amplifier adapted for a first radio frequency band. The second semiconductor chip includes a second integrated circuit which forms part of a second power amplifier adapted for a second radio frequency band. The first and second chips are positioned on the substrate and electrically connected to components mounted on the substrate.