baber/WOPTO huggingface dataset:
Patent KR-20000038847-A (KR)
Title: Focusing method in ultrasound imaging system
Inventor: BAE MOO HO
IPC: G10K11/34
Filed: 1998-12-09
Abstract: PURPOSE: A focusing method in an ultrasound imaging system which enables to obtain not only maximized resolution even without structural modifications but also significantly precise geometric dimensions and distance information about examinee is provided by varying the sonic velocity in media of the receiving signals at an array transducer then determining the each focusing delay time according to the variation. CONSTITUTION: A focusing method includes emitting ultrasound signals through an array transducer comprised of pluralities of elements to a focusing point of a subject, and focusing reflected ultrasound signals from the focusing point. The method is characteristically comprised of the following steps: a) assuming advanced distance(focusing depth) received from the area near the interested focusing point to fix a reception time at a transducer element placed at the center of the array transducer; b) determining the advanced distance(focusing depth) to the interested focusing point by using the fixed reception time and the ultrasonic velocity(sonic velocity) and constructing a ultrasonic image through calculation of the focusing delay time according to the advanced distance; c) determining the variation of brightness or contrast of the ultrasonic image obtained from repetition of the step b), while varying the assumed ultrasonic velocity(sonic velocity) from the step a); and d) determining the ultrasonic advancing velocity when the brightness or contrast of the image from the step c) is the maximum, as an average ultrasonic advancing velocity(sonic velocity), and the focusing delay time curve as an optimum focusing delay time curve then achieving the final focusing delay.
Patent KR-20000040424-A (KR)
Title: Method of manufacturing silicon-on-insulator wafer
Inventor: LEE SEONG EUN
IPC: H01L21/31
Filed: 1998-12-18
Abstract: PURPOSE: A method of manufacturing a SOI(silicon-on-insulator) wafer is to make uniform the thickness of a silicon layer on which a device is to be formed, and to prevent the deterioration of an electrical property thereof. CONSTITUTION: A method of manufacturing a SOI wafer comprises the steps of: providing a first silicon substrate(10) and a second silicon substrate composed of a bulk silicon, respectively; forming a thermal oxide film(11) on a surface at one side of the first silicon substrate; ion-implanting a boron ion or a phosphorus ion into a prescribed depth from the surface at one side of the second silicon substrate to form an impurity layer; joining the surface at one side of the second silicon substrate onto the thermal oxide film; polishing the surface at the other side of the second silicon substrate by a prescribed depth; etching the surface at the other side of the second silicon substrate to a portion adjoining the impurity layer; etching a portion of the second silicon substrate remaining on the impurity layer; and polishing the surface at the other side of the second silicon substrate comprising the impurity layer by a prescribed depth.
Patent KR-19990063261-A (KR)
Title: 로봇 장치
IPC: G05D1/02
Filed: 1998-12-21
Abstract: 본 발명은 로봇 장치에 있어서, 기능 및 성능을 용이하게 향상시킬 수 있도록 하는 것으로서, 본 발명은 소정의 구성 유닛에 착탈이 자유롭게 장전되어, 각 구성 유닛을 각각 소정 상태로 구동 제어하는 제어수단을 형성하도록 한 것에 의해, 제어수단을 용이하게 교환할 수가 있어, 이리 하여 기능 및 성능을 용이하게 향상시킬 수 있는 로봇 장치를 실현할 수가 있다. 
     또한 본 발명은 소정의 구성 유닛에 착탈이 자유롭게 장전되어, 원하는 동작 형태 정보가 기억된 기억 수단을 형성하도록 한 것에 의해, 기억수단을 이것에 기억된 동작 형태 정보와는 다른 동작 형태 정보가 기억된 기억 수단에 용이하게 교환할 수가 있어, 이리 하여 기능 및 성능을 용이하게 향상시켜 얻는 로봇 장치를 실현할 수가 있다.
Patent KR-20000042265-A (KR)
Title: Control method for improving restart of automobile using lpg as fuel
Inventor: JI SUN HO
IPC: F02N19/00
Filed: 1998-12-24
Abstract: PURPOSE: A control method for improving restart of automobile using a liquified petroleum gas(LPG) as a fuel is provided to prevent delay of restarting time caused by a high density of the fuel while allowing a secondary solenoid valve for opening/closing first and second pressure reduction chambers to be shielded for a predetermined time period. CONSTITUTION: A control method shields a secondary solenoid valve of a vaporizer during a predetermined time period so as to prevent the LPG fuel in a first pressure reduction chamber from being flowed into a second pressure reduction chamber during that time period, when a water temperature sensor switch senses the temperature of the cooling water upon restarting of the automobile and applies the sensed temperature to an ECM, and the applied temperature of the cooling water is higher than a temperature set in the ECM.
Patent KR-20000044678-A (KR)
Title: Circuit for clamping ground potential in semiconductor device
Inventor: JANG SEONG BONG
IPC: G11C11/21
Filed: 1998-12-30
Abstract: PURPOSE: A clamping circuit is provided to clamp a ground potential supplied for driving a circuit to normally drive the circuit included in a semiconductor device regardless of the bouncing of the ground potential. CONSTITUTION: In a ground potential clamping circuit(500), a chip ground potential(Vss) applied through a chip grounding node(100) is supplied to a bias block(200). When the chip ground potential is bounced, the bias block is turned on for supplying the chip ground potential to the next clamp ground nodes. A reference voltage generating unit(100) generates first/second reference potentials higher/lower than the reference ground potential in response to the activation of a chip selecting signal(/CS). When the potential from the bias block is higher than the first reference potential, the first reference potential is outputted as a clamp ground potential(VSS1). When the potential is lower than the second reference potential, the second reference potential is supplied to an input buffer(600) as the clamp ground potential.
Patent KR-20000046877-A (KR)
Title: Circuit for compensating super-cooling and weak cooling of refrigerating chamber
Inventor: PARK JUN BAE
IPC: G05B19/042
Filed: 1998-12-31
Abstract: PURPOSE: A circuit for compensating supercooling and weak cooling of a refrigerating chamber is provided to simplify the circuit arrangement by corresponding to the supercooling and weak cooling with a single input terminal, thereby preventing increase of manufacturing cost and complication of circuit arrangement. CONSTITUTION: A circuit for compensating supercooling and weak cooling of a refrigerating chamber includes a plurality of resistors(R1-R6) are connected between a power supply and earth in serial, a plurality of option pins(OP1-OP4) are connected with the resistors in parallel, and a microcomputer of which input terminal(1) is connected to a central point of the plurality of resistors, wherein the microcomputer divides a voltage input via a single input terminal to a random number for converting the voltage inputs to digital values, thereby sensing a plurality of input changes.
Patent KR-19990028956-A (KR)
Title: 면도기 손잡이
IPC: B26B21/52
Filed: 1997-04-30
Abstract: 본원은 카트릿지 단부에 "Y"형 요크를 가진 신장형 손잡이 축(elongate handle shaft:12)과, 구근형(bulbous) 말단부(22)와 구근형 단부(22)에서 마감되는 핸들의 돌기부 아래로 이어지는 핑거 방향 채널(24)을 가진 경제성이 향상된 습식 면도기에 관한 것이다.  말단부에는 면도기 손잡이의 채널을 횡단하는 방향으로 형성된 구근부가 있다.   요크는 하방향과 측면 외방향으로 굽어지고 구근부 단부는 손잡이의 하부면 밑에 하방향으로 굽어져, 전후방향 구역에서 측면과 하측부에 오목한 엄지 및 핑거 파지부(thumb and finger grips)를 형성한다.   요크의 기부에는 핑거 안착부(30)가 있어서 면도기의 조작성을 향상시킨다.   면도기의 하부에는 양호한 파지용으로 상부면에 종속된 일련의 패드(4)가 있다.   손잡이는 여성 신체를 면도하는데 적합한 일정한 소성 몰딩물과 같은 경제적인 구조체용으로 적합한 것이다.
Patent KR-19990035930-A (KR)
Title: 고밀도 상태에서 부피가 큰 물체를 공기로 운반하기 위한 설비에서 안전 제한 범위내의 작동 자동 감지 방법
IPC: B65G53/66
Filed: 1997-05-27
Abstract: 본 발명은 고밀도 상태에서 부피가 큰 물질을 공기로 운반하기 위한 설비에서 안전도 제한 범위에서 작동을 자동 감지할 수 있는데, 여기에서 캐리어 기체와 벌크 물질은 로크(3)로 따로따로 주입되고 로크의 배출구는 벌크 물질을 공기로 운반하기 위한 덕트(4)와 연결된다.  본 발명은, 벌크 물질이 컨베이어 덕트(4)로 주입되는 영역(3a)에 인접해 캐리어 기체에 의해 가해지는 "로크(lock)" 압력(Pe)을 측정하고, 정해진 안전 척도에 따라, 설정된 지속 시간( t )을 경과했을 때 측정된 로크 압력(Pe)에서 불안정을 감지한다.  안정도는 설정된 멤버쉽 함수, 샘플 기간, 및 시간 간격을 적용할 때 측정된 압력값(Pe)의 하나이상의 퍼지 분할을 수행하고 퍼지 분할을 기초로 안정 지수를 구한다.
Patent KR-19990036149-A (KR)
Title: 세라미드 레벨 감소 및 항레트로바이러스성 강화용 ｌ-카르니틴 및 이들의 유도체의 용도
IPC: A61K31/22
Filed: 1996-07-19
Abstract: 본 발명은 HIV-감염 및 AIDS 치료를 위해 항레트로바이러스성 약물의 활성 강화 및 세라미드 레벨을 감소시키기 위한 항레트로바이러스 약물이 포함된 L-카르니틴, 이들의 유도체 및 약제학적으로 수용가능한 이들의 염의 새로운 치료학적 용도에 관한 것이다.
Patent KR-19990044454-A (KR)
IPC: A61K9/00
Filed: 1996-09-04
Abstract: There is provided a composition for rectal administration suitable for curing hemorrhoids or the like by which the concentration of a medicine in the affected tissue is increased and the potency of the medicine is expected to continue. A long active composition for rectal administration which comprises an acrylic acid polymer, a vasoconstrictor and a rectal tissue-curing agent.
Patent KR-19990063739-A (KR)
Title: 암모산화 촉매의 제조방법
IPC: C07C255/08
Filed: 1996-09-27
Abstract: 본 발명은 혼합 바나듐, 안티몬 및 철 옥시드의 신규 제조 방법 및 알칸 암모산화용 촉매로서 상기 옥시드들의 용도에 관한 것이다. 
     상기 정의된 혼합 옥시드의 제조방법은 하기를 특징으로 한다 : 
     - 바나듐, 안티몬 및 철 화합물 각각을 1종 이상의 포화 알코올 또는 물에 용해시키고, 
     - 혼합 옥시드를 침전시키기 위하여, 상기 수득된 알코올성 용액 또는 수용액을 암모늄 염을 함유하는 수용액과 접촉시키고, 
     - 수득된 혼합 옥시드를 분리 및 하소시킨다.
Patent KR-19990063884-A (KR)
Title: 압전 진동 장치
IPC: H03H9/19
Filed: 1997-07-24
Abstract: 본 발명은 통신기기 등에 유용한 두께미끄럼 진동을 이용하는 압전 진동 장치에 관한 것이다. 
     본 발명에 의한 압전 진동 장치는, 비조화 오버톤 모드가 비교적 강하게 여진되는, 입력전극(21) 및 출력전극(22), 또는 공통전극(23)의 각 외주근방의 최소한 하나에 중량경감부(231),(232) 또는 중량부가부가 제공되는 구성을 가진다. 
     또한, 공통전극(23)의 면적은 입력전극(21) 및 출력전극(22)의 전체 면적보다 크고, 중량경감부(231),(232) 또는 중량부가부는 입력전극(21) 및 출력전극(22)과 마주보는 공통전극(23)에 이른다. 
     바람직하게는, 수정판(1)의 한쪽 주면에 형성된 공통전극은 반대쪽 주면에 형성된 입력전극(21) 및 공통전극(22)의 2배 내지 10배의 두께를 가진다. 
     전극재료로서, 금, 은, 또는 금 또는 은을 주성분으로 하는 금속재료가 사용되어, 주진동 근방에서 생성된 스퓨리어스 진동이 억제되고, 통과대역 특성이 더 향상되고 넓어지며, 통과대역 외부에서의 보증감쇄량 특성이 강화된다.
Patent KR-19990071654-A (KR)
Title: 전자 부품 장착 장치 및 전자 부품 장착 방법
IPC: H05K13/04
Filed: 1996-11-21
Abstract: 트레이로부터 공급되는 전자 부품의 장착 택트 타임을 단축할 수 있는 전자 부품 장착 장치 및 장착 방법을 제공하는 것을 목적으로 한다. 
     전자 부품 공급 장치(16)는, 전자 부품을 수납하는 트레이(31, 33, 35)를 유지하는 복수개의 테이블(19, 20, 21)과, 이 테이블을 상하로 복수개의 단을 가지며 또한 각각의 테이블을 각각의 높이 레벨(L1, L2, L3)에서 수평 방향으로 자유자재로 이동하는 프레임(17)과, 각각의 테이블마다 배치되며, 이 테이블을 대기 스테이지(B)로부터 픽업 스테이지(A)로 이동시키는 복수개의 컨베이어(22, 23, 24)를 구비한다.  탑재 이송 헤드(13)는 전자 부품을 진공 흡착하기 위한 노즐(14a, 14b, 14c)과 이 노즐을 픽업 스테이지에 있어서의 각각의 트레이의 높이 레벨에 따라 상하로 이동시키는 상하 이동 기구를 구비한다. 
     픽업 위치에 있어서 각 트레이를 서로 다른 레벨에 배치하고, 이들 각각의 트레이마다 마련된 컨베이어는 독립적으로 이동할 수 있으며, 각 탑재 이송 헤드가 전자 부품을 픽업하는 위치와, 다른 트레이로부터의 픽업의 방해가 되지 않은 위치를 개별적으로 이동시키도록 하였다.  이에 따라, 필요한 트레이의 픽업 위치로부터의 출퇴(taking out and returning) 동작을 다른 트레이와 간섭하지 않고 재빨리 행하여, 결과적으로 장착의 택트 타임를 단축할 수 있다.
Patent KR-19990071656-A (KR)
Title: 트리아진 유도체
IPC: C07D251/18
Filed: 1996-06-28
Abstract: 본 발명은 화학식 I의 트리아진 유도체, 이의 제조 방법 및 활성 성분으로 상기 화학식 I의 트리아진 유도체 또는 이의 염을 함유한 제초제에 관한 것이다. 
     화학식 I 
     
       
     
     상기 식에서, 각각의 기호는 제 1 항에서 정의된 것과 같다. 
     본 발명의 상기 트리아진 유도체는 목화에 대한 독성없이 낮은 투여량에서 목화와 같은 당아욱과 풀에 속하는 어저귀를 포함하는 넓은 범위의 밭 잡초를 선택적으로 방제할수 있고, 따라서 활성 성분으로 상기 트리아진 유도체를 함유한 본 발명의 제초제는 목화밭에 사용하기위한 제초제로서 대단히 유용하다.
Patent KR-19990082201-A (KR)
Title: 에이즈 치료제 또는 예방제
IPC: A61K38/55
Filed: 1997-01-30
Abstract: 본 발명은 AIDS 치료 또는 예방을 위해 퀴나졸론카르복실산 기재 항 HIV 제중에서 선택된 하나 이상의 약제와 역전사효소 저해제 및 HIV 프로테아제 저해제중에서 선택된 하나 이상의 약제의 병용적 사용; 및 유효성분으로서 퀴나졸론카르복실산 기재 항 HIV 제중에서 선택된 하나 이상의 약제와 함께 역전사효소 저해제 및 HIV 프로테아제 저해제중에서 선택된 하나 이상의 약제를 함유하는 AIDS 치료제 또는 예방제에 관한 것이다.
Patent KR-19990082224-A (KR)
IPC: A61K31/343
Filed: 1997-01-30
Abstract: A compound having the structure:   <IMAGE>   wherein (a) n is from 1 to about 3; (b) X is selected from the group consisting of O, S, SO, or SO2; (c) Y is independently hydrogen or straight, branched or cyclic alkyl having from 1 to about 4 carbon atoms, or the Y's are bonded together to form an alkanyl ring having from 3 to about 7 atoms; (d) Z is hydrogen or straight, branched or cyclic alkyl having from 3 to about 10 atoms other than hydrogen; (e) W is hydrogen or straight, branched or cyclic alkyl, aryl, hydroxy or alkoxy; and (f) R1 and R2 are independently hydrogen or straight, branched or cyclic alkyl having from one to 10 carbon atoms, aryl, heterocyclyl, heteroaryl, hydroxy, or alkoxy; or R1 and R2 are bonded together to form a ring having from from 3 to about 7 atoms wherein one to three atoms may be heteroatoms. pharmaceutical compositions comprising such compounds, and methods of treating inflammation or pain using such compounds.
Patent KR-20000005544-A (KR)
Title: Method and apparatus for interference decorrelation in time and space
Inventor: BOTTOMLEY GREGORY EDWARD
IPC: H04B7/08
Filed: 1997-04-14
Abstract: PURPOSE: A method interference decorrelation in time and space is provided to receive transmitted symbols which are disclosed in which techniques are applied to jointly combat fading, time dispersion, and interference that is correlated in both space and time. CONSTITUTION: The digital wireless communication system for transmitting a digital information symbols receives the wireless signal on a plurality of antennas and produce a plurality of antenna signals. A plurality of sample streams to be received are produced by processing the antenna signal wirelessly. A plurality of channel estimate are corresponded each received sample stream. These objects are accomplished by, for example, providing an inverse impairment correlation sequence estimate to the branch metric processor in addition to a channel estimate. The branch metric processor can then use this additional information to provide branch metrics that take into account the time correlation of impairment to improve the symbol hypotheses.
Patent KR-20000015988-A (KR)
Title: Swollen tobacco material manufacturing method
Inventor: UEMATSU HIROMI
IPC: A24B3/18
Filed: 1998-03-24
Abstract: PURPOSE: A swollen tobacco material manufacturing method can impregnate carbon dioxide with tobacco material. and provides the method cooling the tobacco material by the evaporation of liquid carbon dioxide. CONSTITUTION: The tobacco material is cooled the saturation temperature corresponding to impregnation pressure. The liquid carbon dioxide (21) is supplied from the upper side of the tobacco material TM via a sintered metal plate (13) with the impregnation pressure retained, the interior of the pressure vessel (11) is filled with carbon dioxide gas produced by the evaporation of liquid carbon dioxide, the tobacco material is impregnated with carbon dioxide by cooling the tobacco material with evaporation latentheat, The swollen tobacco material is attained by heat swell the carbon dioxide-impregnated tobacco material.
Patent KR-20000016230-A (KR)
Title: Member unit for code division multiple access wireless communication system
Inventor: ODENWALDER JOSEPH P
IPC: H04J13/18
Filed: 1997-05-28
Abstract: PURPOSE: A member unit for code division multiple access(CDMA) wireless communication system is provided to raise a band width efficiency and a data transmitting speed by not limiting a repetition size. CONSTITUTION: In method of modulation data for transmitting from a first member unit to a base station communicating with the member unit set, the method is comprising the steps of modulating a first data into a first crossing code for formation of a first channel data, modulating a second data into a second modulation code for formation of a second channel data, adding the first channel data and the second channel data for formation of an added data, and modulating the added data into a long code for formation of the modulated data.
Patent KR-20000016641-A (KR)
Title: Payphone metering method and apparatus in a wireless telephone system
Inventor: ROBBINS BARRY R
IPC: H04W4/24
Filed: 1997-06-11
Abstract: PURPOSE: Disclosed are a method and apparatus of a payphone metering to meter charges incurred during a telephone call within an external system. CONSTITUTION: The wireless system includes one or more payphones (12) from which users may initiate payphone calls. A mobile switching center (16) connects telephone calls initiated from wireless payphones to external telephone systems (18) such as the public switch telephone network (PSTN). To meter charges incurred during the telephone call within an external system, the external system transmits periodic metering pulses to the mobile switching center. Each pulse is representative of a predetermined amount of money associated with the telephone call. The rate at which the periodic pulses are transmitted to the mobile switching center depends upon the current billing rate and may be affected by, for example, the time of day. Rather than the forwarding all of the metering pulses to the wireless payphone, therefore consuming a portion of the bandwidth available for wireless telephone calls, the mobile switching center (16) calculates a steady state billing rate from the metering pulses, then transmits only the steady state billing rate to the wireless payphone (12).
Patent KR-20000022158-A (KR)
Title: Crucible for crystal pulling and method of manufacturing same
Inventor: YAMAJI MASATOSHI
IPC: C04B35/83
Filed: 1997-06-26
Abstract: PURPOSE: A crucible of carbon fiber reinforced carbon composite material for crystal pulling and a method of manufacturing the same are provided to improve resistance to going SiC by impregnating and covering with a pyrolytic carbon on the surface of the C/C composite material. CONSTITUTION: A crucible of carbon fiber reinforced carbon composite material for crystal pulling and a method of manufacturing the same, the crucible being formed using filament windings in a combination of axially reinforced layers as well as circumferential reinforced layers, which combination is given in two or more sets. The circumferential reinforced layers resist a force tending to expand a drum portion of the crucible, and the axially reinforced layers resist a force tending to push down a bottom of the crucible. The axially reinforced layers extending from the bottom to the drum portion can be formed by at least either of a level winding having a contact angle of 0 to 10 degree relative to the central axis or a portal winding, and the circumferential reinforced layers in areas adjacent to the drum portion out of the drum portion and the bottom portion can be formed by at least either of a parallel winding having a contact angle of 70 to 90 degree relative to the central axis or a helical winding. When the axially reinforced layers cover the center of the bottom, an integral crucible of C/C composite material with no hole is provided.
Patent KR-20000050306-A (KR)
Inventor: NAM GAP JIN
IPC: C23C16/40
Filed: 1999-01-05
Abstract: PURPOSE: A method for manufacturing a capacitor having a tantalum oxidation layer is provided to increase productivity, by improving an electrical characteristic of the capacitor, and by reducing an incubation time in an evaporation process for forming the tantalum oxidation layer. CONSTITUTION: A method for manufacturing a capacitor having a tantalum oxidation layer comprises four steps. The first step is to form a lower electrode electrically connected to an active region of a semiconductor substrate. The second step is to form a prior treatment layer including a component selected from a group of a silicon oxidation material, a silicon nitride material and a composition of the two, on the surface of the lower electrode. The third step is to form a dielectric layer on the prior treatment layer, in which the dielectric layer is composed of a first dielectric layer and a second dielectric layer. The first dielectric layer is evaporated in a first temperature selected from a predetermined scope of temperature. The second dielectric layer is evaporated in a second temperature different from the first temperature, the second temperature being selected from the predetermined scope of temperature. The fourth step is to perform a heat treatment regarding the dielectric layer in an oxygen atmosphere.
Patent KR-20000055440-A (KR)
Inventor: KIM JIN GI
IPC: B60K31/02
Filed: 1999-02-06
Abstract: PURPOSE: A device and a method for constant velocity travel of a vehicle are provided to control a vehicle with various speeds of constant velocity travel by the operation of a driver even while a vehicle travels at a constant velocity. CONSTITUTION: A signal generated by turning on a cruise switch(10) for constant velocity travel is transmitted to an electronic control unit(6) in a normal travelling state. A vehicle is established in a constant velocity travel standby state. If a set/increase switch(12) is pressed once at the moment when the speed of a vehicle needs constant velocity travel, a corresponding signal is transmitted to the electronic control unit. The electronic control unit controls an actuating unit(8). The speed at the corresponding moment is set and the vehicle travels at a constant velocity.
Patent KR-20000061021-A (KR)
Inventor: KANG MYEONG GU
IPC: H04B1/40
Filed: 1999-03-23
Abstract: PURPOSE: A circuit for attenuating a receiving signal of a mobile communication terminal is provided for decreasing a receiving signal using a common amplification and attenuating operation of an electric field effect transistor and decreasing the level of a receiving signal. CONSTITUTION: When a receiving signal is inputted into a receiver of a mobile communication terminal, a first condenser(100) transmits an alternating current component from which a direct current component is removed. A second condenser(200) removes a noise of an attenuating control signal outputted from a controller. A first switching unit(300) is turned on when an attenuating control signal from the second condenser(200) is a high signal and is turned off when the attenuating control signal is a low signal. In addition, A second switching unit(500) is turned on when an attenuating control signal from the third condenser(400) is a high signal and is turned off when the attenuating control signal is a low signal.
Patent KR-20000061796-A (KR)
Inventor: NA GYEONG JU
IPC: C08F2/38
Filed: 1999-03-31
Abstract: PURPOSE: A method for preparing an anionic polymer using a reaction-stopping agent which reduces discoloration of rubber in preparing a butadiene rubber or a styrene-butadiene rubber and is effective to keep a pure color for a long time is provided. CONSTITUTION: In the method for preparing a high molecular materials by anionic polymerization, a dispersant of a maleic anhydride diisobutylene polymer sodium salt represented by of the following formula 1 is partially acidified to be used as a reaction stopping-agent in an agglutination step and then adding calcium chloride to a solution containing the maleic anhydride diisobutylene polymer sodium salt in a process of agglutination.
Patent KR-20000066062-A (KR)
Inventor: LEE TAE HYEON
IPC: H01L21/60
Filed: 1999-04-13
Abstract: PURPOSE: A method for calibrating a bonding pressure of a capillary for a wire bonding is provided to directly measure a bonding pressure in the same dynamic state as in a real bonding process. CONSTITUTION: A capillary(22) is transferred to a piezo-electric element(25). The capillary is driven to pressurize the piezo-electric element while varying an input value until a predetermined first output value is measured from the piezo-electric element. And, a first input value is detected when the first output value is measured. The capillary is driven to pressurize the piezo-electric element while varying an input value until a predetermined second output value is measured from the piezo-electric element. And, a second input value is detected when the second output value is measured. A ratio of the input value variation to the output value variation is computed using the first and second input values and the first and second output values.