baber/WOPTO huggingface dataset:
Patent KR-20000021557-A (KR)
Title: Anti-aids peptide inhibiting interaction between cell receptor and human immunodeficiency virus(hiv)
Inventor: YUN SEONG JUN
IPC: C07K7/08
Filed: 1998-09-30
Abstract: PURPOSE: Provided is a peptide inhibiting an interaction between gp120 that is outer membrane protein of HIV and a cell receptor, CD4 on a stage of cell infection of HIV CONSTITUTION: A peptide consists of 12 amino acids. each amino acid comprises especially, proline and phenylalanine on the fourth and sixth position from amino-ends respectively and random amino acids. Peptide inhibits interaction between cell receptor, CD4 and outer membrane of HIV-1, gp120 on an early step of virus infection so it can be provided as a new AIDS treatment and used for combination therapy. To select a peptide which can be used for AIDS therapy, panning method which is characterized by using agarose bead as matrix and phage-displayed peptide library, is provided. In the panning method, peptide is obtained by using phosphate-buffered saline, competitive binding, and E.coli used as a host cell of phage.
Patent KR-19990007602-A (KR)
Title: 팡팡이 풍선
Filed: 1998-10-12
Abstract: 본 제품은 경기응원용 풍선의 일종으로 
     야구, 농구장등의 운동경기응원 및 레크레이션, 각종 이벤트 행사장에서 주로 사용하는 제품이다. 
     기존 응원막대가 가진 특징으로는 
     첫째, 길쭉한 원통의 막대가 아닌 사람의 손가락 모양을 응용한 제품으로                서 세련된 디자인이 소비자의 큰 흥미를 돋굴 수 있다. 
     둘째, 손잡이가 없던 기존의 제품에 비해 잡기 용이하도록 손잡이가 디자                 인 되어 있다. 
     셋째, 기존 제품은 두짝이 한쌍이 되어 부딪혀야지만 소리가 있었으나 
     본 제품은 풍선안에 방울을 집어넣어 한짝만으로도 소리를 내는 것                이 기능하다. 
     넷째, 기존제품보다 견고한 실링처리로 터지는 불량품이 적어 1회용이 아                닌 재사용이 가능하다. 
     다섯째, 큐방(접착고무)을 부착하여 차량용 햇빛가리개와 장난감 및 디스플레이용으로 활용가능한 제품이다.
Patent KR-20000026316-A (KR)
Title: Apparatus for controlling output driver
Inventor: LEE BYONG JAE
IPC: G11C11/407
Filed: 1998-10-20
Abstract: PURPOSE: An apparatus for controlling output driver is provided to decrease a size of a circuit and a consumption current when sensing data by directly control a 3-state output simultaneously using two input signals with a complementary potential level and a signal. CONSTITUTION: A PMOS transistor(MP1) having a pull-up driver function amplifies a first logic of a data signal to have the first logic as a power supply voltage(Vcc). An NMOS transistor(MN1) having a pull-down driver function amplifies a second logic of the data signal to have the second logic as a ground voltage(Vss). A sensing means(32) receives a control signal(s1) generated by a combination of the data signal, an output enable signal(/OE) and a CAS bar signal(/CAS), and senses a potential value of the data signal according to the receive control signal(s1). A driver driving control means(34) simultaneously receives signals of both output terminals(N1,N2) having a complementary potential level of the sensing means(32) to buffer received signals, and outputs pull-up and pull-down control signals(pu,pd).
Patent KR-20000026400-A (KR)
Title: Multi domain lcd
Inventor: KIM KYONG JIN
IPC: G02F1/136
Filed: 1998-10-20
Abstract: PURPOSE: A multi domain LCD is provided to increase an electric field distortion effect by forming a dielectric asperity at a lower plate and forming an electric field inducing window at an upper plate to distort an electric field. CONSTITUTION: A plurality of data lines and gate lines are horizontally and vertically formed on a first substrate(31) and divide the first substrate(31) into a plurality of pixel regions. A thin film transistor is formed to pixel regions and has a gate electrode(11), a gate insulating film(35), a semiconductor layer(5), an ohmic contact layer, and source/drain electrode(7,9). A protecting layer(37) is formed around the first substrate(31). A pixel electrode(13) is connected to the drain electrode(9) on the protecting layer(37) and is overlapped with the thin film transistor and/or data lines and gate lines. A dielectric asperity(41) controls an orientation direction of a liquid crystal molecule of a liquid crystal layer. A black mask(27) screens a light leaked from gate lines, data lines and the thin film transistor on a second substrate(33).
Patent KR-20000027658-A (KR)
Title: Vertical probe card
Inventor: KIM DONG IL
IPC: H01L21/66
Filed: 1998-10-29
Abstract: PURPOSE: A vertical probe card is provided to manufacture vertical probes having appropriate elastic transformations and mechanical intensity, to attach the probes on a substrate with high density, to eliminate leakage current between the probes, to restore the probes to original shapes after measuring the probes, and to eliminate transformations during a determined life span of the card. CONSTITUTION: A vertical probe card fixing a plurality of probes by accordingly arranging the probes, when measuring the probes with a pad or a bonding pad of an element for being measured, comprises an insulating substrate(1), a plurality of probes, and conductive wiring(4). The insulating substrate is electrically insulated on a circuit board. The projected probes having elasticity are fixed on the insulating substrate. The conductive wiring is formed to the circuit board via the insulating substrate from the probes according to a design. The probes are manufactured as a method of leaving a necessary part with an etching method, after determining patterns with an optical lithographic method. One pointed end(3) of a probe is contacted with a special pad of the element for being measured, and the probes enter a trench(5) etched on the insulating substrate as being transformed. Each probes is connected on the insulating substrate as each pad, and is connected to a probe card in the pad.
Patent KR-20000031878-A (KR)
Title: Method of reproducing tire squeezed-rubber
Inventor: CHANG DOO YOUNG
IPC: B29B17/00
Filed: 1998-11-11
Abstract: PURPOSE: A method of reproducing tire squeezed-rubber is provided to cut a cross-linkage between sulfurs in the rubber by adding a cross-linkage cutting agent, instead of performing desulfurization. CONSTITUTION: A method of reproducing tire squeezed-rubber is disclosed. The squeezed rubber of 500g passes thirty (30) times through cooled open rolls with a minimized gap and is formed into a shape of a sheet. On the obtained sheet, a cross-linkage cutting agent of 15g is added and dispersed, and natural rubber of 40g is added. Then, the sheet passes through the rolls. The cross-linkage cutting agent De-Link RTM is manufactured by a company named STI-K and comprises zincate of thiocarbamate, zincate of dialkyl dithiophosphate and derivatives thereof as promoters, comprises zinc stearic as an activator, and uses natural rubber or synthesized rubber.
Patent KR-20000015759-A (KR)
Title: Mobile communication apparatus with mode switching function and control system thereof
Inventor: PARK BONG RAE
IPC: H04M1/725
Filed: 1998-11-25
Abstract: PURPOSE: A mobile communication apparatus is provided to automatically recognize a calling mode of itself and switch the calling mode responding to the environment. CONSTITUTION: The mobile communication apparatus has a calling mode divided into a sound mode and an environment-friendly mode. The apparatus comprises a means for receiving a mode switching signal from an outer transmitting device(2) which is mounted at a place where needs to keep quiet, and a mode switching means for switching the calling mode to the environment-friendly mode if the mode switching signal is received and keeping the calling mode if the present calling mode is the environment-friendly mode. The environment-friendly mode includes a vibration mode, a small sound mode and a light mode. Thereby, the calling mode of the apparatus is automatically switched to the environment-friendly mode at the place where needs to keep quiet.
Patent KR-19990062612-A (KR)
Title: 컬이 감소된 배터리 격리판 및 제조방법
IPC: H01M50/457
Filed: 1998-11-26
Abstract: 본 발명은 적어도 한쪽면이 셀룰로오스(cellulose) 필름으로 압출코팅된 비셀룰로오스(noncellulosic) 부직포 기질로 이루어진 컬(curl) 내성을 갖는 배터리 격리판, 및 그 제조방법에 관한 것으로, 그 제조방법은 부직포 비셀룰로오스의 섬유 기질을 상기 기질의 적어도 한쪽면 상에 셀룰로오스 또는 셀룰로오스 유도체 용액을 접촉시키고; 코팅된 기질을 형성하기 위하여 상기 용액을 바람직하게는 중합도를 적어도 350을 갖는, 더욱 바람직하게는 중합도를 적어도 600을 갖는 고체 셀룰로오스 또는 셀룰로오스 유도체로 전환시키고; 상기 기질을 수용성 용액에서 세척하고; 격리판의 본 드라이 게이지(bone dry gauge) (BDG)에 기초한 약 4 내지 25 중량%의 수분함량을 갖는 배터리 격리판을 제조하기 위하여, 상기 코팅된 기질을 양축의 장력하에서 건조시키고; 그리고 약 4 내지 25중량% BDG의 수분함량을 갖고 컬링(curling)에 대해서 안정화되며, 바람직하게는 흡수 속도가 적어도 6mm/5분이고 적어도 200g/m 2 의 30% KOH 흡수속도를 갖는 격리판을 제조하기 위하여 상기 격리판을 조절된 수분량의 존재 하에서 적어도 40℃로 상승시킨 온도에서 적어도 8시간 동안 유지시키는 단계로 이루어지는 것을 특징으로 한다.
Patent KR-20000034671-A (KR)
Title: Device for driving gate in field emission display
Inventor: KIM JIN
IPC: G09G3/30
Filed: 1998-11-30
Abstract: PURPOSE: A device for driving a gate in an FED(Field Emission Display) is provided to minimize an effect from leakage current and to precisely drive the panel of the FED. CONSTITUTION: A driving circuit unit(18) of a gate generates a scan signal for outputting, and a driving circuit unit(16) of data generates a data signal for feeding to a cathode(11). Herein, the scan signal and the data signal are inputted to a synchronizing circuit unit of gate-data. Then, the synchronizing circuit unit of gate-data generates a scan signal synchronized by an AND gate or an NOR gate for feeding to a gate(12) through a buffer. Therefore, the scan signal is disappeared in case of absence of the data signal while generating the scan signal in case of generating the data signal. As a result, the generation of leakage current flowing to the gate is prevented in case of the absence of the data signal.
Patent KR-19990062759-A (KR)
Title: 웨이퍼 연마 장치 및 연마 방법
IPC: B24B37/30
Filed: 1998-12-03
Abstract: 본 발명에 따른 웨이퍼 연마 장치 및 연마 방법은 연마량의 변동을 줄여 수율을 향상시키고 반응성 부산물에 의한 흠결의 발생을 방지하고 연마 속도의 저하를 방지할 수 있다.  본 발명의 웨이퍼 연마 장치는 회전식 연마 베드, 상기 회전식 연마 베드에 제공된 연마포, 연마제를 연마포의 면에 공급하기 위한 연마제 공급 수단, 소정의 압력으로 상기 웨이퍼를 상기 연마포에 대고 누르기위한 웨이퍼 누름 수단, 상기 웨이퍼를 둘러싸고 배치되며 상기 연마포와 접촉하는 면상의 내측 주변 에지와 외측 주변 에지 사이로 연장하는 다수의 그루브가 제공된 링형의 리테이너, 상기 연마포에 대하여 상기 웨이퍼 및 리테이너를 구동시키기 위한 회전식 구동 수단, 및 상기 웨이퍼와 상기 리테이너 간에 회전 속도의 차를 제공하는 회전 속도차 발생 수단을 갖는다.
Patent KR-20000038446-A (KR)
Title: Method for correcting phone number error of portable telephone
Inventor: LYU MOO CHEOL
IPC: H04M1/26
Filed: 1998-12-07
Abstract: PURPOSE: A method for correcting phone number error of a portable telephone is provided to correct only a wrong pressed number when the wrong number is pressed using a portable telephone. CONSTITUTION: A user presses a correction key when a phone number has been pressed wrong(S1-S4). A cursor is displayed at a position of the latest inputted number on screen in accordance with being pressed the correction key(S6). The wrong number is corrected at the position of the cursor, and a correct number is inputted(S7). It is determined whether the number will be corrected again, and in a case which does not require correcting it, the cursor is deleted (S8, S9). In a case which requires correcting the number, the cursor is moved using keys(* or #), and the number at the position of the cursor is corrected to a new number with deleting the number(S10, S11).
Patent KR-19990063105-A (KR)
Title: 비휘발성 메모리와 그 제조방법
IPC: H01L21/336
Filed: 1998-12-16
Abstract: 비휘발성 메모리와 그 제조방법은 셀 면적을 증가시키지 않으면서 화학 기계적 연마 기술과 건식 에칭 (etching) 기술의 조합에 의하여 컨트롤 게이트와 플로팅 게이트 사이의 접합 용량을 증가시켜 저전압과 고속동작을 실현한다.    제 2 게이트 절연막을 통하여 플로팅 게이트 (4, 6)에 용량 접합한 컨트롤 게이트인 제 1 절연막을 통하여 반도체 기판에 형성된 플로팅 게이트 (4, 6)를 제공한다.    플로팅 게이트 (4, 6)는 기판 형상을 반영하면서 반도체 기판상에 형성된 정상적인 오목 형상보다 깊은 오목 형상을 가진다.    적어도 플로팅 게이트 (4, 6)의 오목 형상으로 된 측벽의 내측 표면에 제 2 게이트 절연막이 제공된다.
Patent KR-20000040992-A (KR)
Title: Culture fluid components only for culture medium of pine mushroom
Inventor: KIM GWANG HO
IPC: A01G31/00
Filed: 1998-12-21
Abstract: PURPOSE: A preparation method of culture components only for culture medium of pine mushroom(Scoria) is provided, which increases production of pine mushroom and grow high-quality pine mushroom which contains 1.88-3.13mM PO4. CONSTITUTION: A process of preparation method of culture components only for culture medium of pine mushroom(Scoria) is composed of several steps. A first step is washing and drying with wind pine mushroom and putting pine mushroom into system bad for growing culture fluid. A second step is drenching 4l/day standard solution of PBG Agriculture Institute for 6 hours/day for 120 days ar EC 2.30, pH 5.7. The culture medium contains Na, NO3, K, PO4, Ca, SO4, Fe, Mn, Zn, Cu, Mo, B.
Patent KR-20000041334-A (KR)
Title: Preparation of animal feed-stuff from food waste using new strain of lactobacillus fermentum ky 2524
Inventor: SHIN MYEONG SU
IPC: A23K1/00
Filed: 1998-12-22
Abstract: PURPOSE: New strain of Lactobacillus fermentum KY 2524, isolated from feces of porcine, shows resistance to acid, heat, antibiotics and bile acid. Preparation method of animal feed from food waste using new strain of Lactobacillus is provided CONSTITUTION: Feces of young porcine is collected and the pH thereof is adjusted to 3.0. LBS agar plate is used to isolate lactobacilli. Acid resistant lactobacilli are screened on MRS medium and oxgall is used to isolate bile acid resistant colonies. Finally heat resistant lactobacilli are isolated and named as Lactobacillus fermentum KY 2524 (KFCC 11060). Inoculation of Lactobacillus fermentum in the food waste reveals that Lactobacillus fermentum grows well compared with known lactobacilli and the number of lactobacilli reaches 10¬6-10¬8 cfu for 15 hours incubation. In order to increase the quality of animal feed stuff, 1-30 % of corn steep liquor or 1-20 % of molasses is added into food waste. Preparation of animal feed stuff comprises steps of a) selective collection of food waste, b) stirring and grinding, c) neutralization, d) sterilization, e) fermentation with Lactobacillus fermentum KY 2524.
Patent KR-20000042672-A (KR)
Title: Isolation method of semiconductor device using shallow trench isolation technology
Inventor: KIM SUN KEUN
IPC: H01L21/76
Filed: 1998-12-26
Abstract: PURPOSE: An isolation method of a semiconductor device using a shallow trench isolation technology is provided to simplify the process and to assure the repeatability of the process at the same time. CONSTITUTION: An isolation method using a shallow trench isolation technology includes the steps of: forming a pad oxide and an anti-reflective film on a semiconductor substrate(1) in sequence; forming a resist pattern on the anti-reflective film; forming a trench in the semiconductor substrate by performing an etching process with the resist pattern as an etch barrier; burying an oxide in the trench; and finally a shallow trench isolation(7) is formed by removing the anti-reflective film and the pad oxide. According to the method, because a nitride film is not used, the inferiority of the resist pattern due to the reflectivity can be prevented.
Patent KR-20000043052-A (KR)
Title: Metallization process of semiconductor device
Inventor: HONG SANG GI
IPC: H01L21/768
Filed: 1998-12-28
Abstract: PURPOSE: A metallization process of a semiconductor device by a damascene method is provided to prevent a dishing of a metal layer and an erosion of an oxide layer in a chemical mechanical polishing. CONSTITUTION: A damascene pattern(23) is formed in an interlayer dielectric(22) on a semiconductor substrate(21), and a metal layer(24) is then formed on the interlayer dielectric(22). Therefore, the metal layer(24) has a higher part(25) above the interlayer dielectric(22) and a lower part(26) in the damascene pattern(23). Next, a planarization layer(31) made of such as photoresist is formed on the metal layer(24), and a chemical mechanical polishing is then performed. While the higher part(25) of the metal layer(24) is polished, the lower part(26) is protected by the planarization layer(31). Accordingly, it becomes possible to form a metallization layer(240) without dishing of the metal layer(24) or an erosion of the interlayer dielectric(22).
Patent KR-20000044231-A (KR)
Title: Prerecording method using route sequence in switching system
Inventor: YOU SEOK JONG
IPC: H04Q3/00
Filed: 1998-12-30
Abstract: PURPOSE: A prerecording method using route sequence in switching system is provided to remove the re-number translation course when trying a call, by allocating the route sequence at generating an identification code of enterpriser network. CONSTITUTION: A prerecording method using route sequence in switching system comprises the steps of;translating the number when trying a call(201);determining whether the corresponding call is the trunk call(202);processing the generalized call when the corresponding call is not the trunk call(203);confirming whether the user is a prerecording subscriber when the corresponding call is the trunk call(204);determining whether the route sequence is prerecorded when the user is a prerecording subscriber(205);grasping the call type of corresponding call when the route sequence is a prerecorded way, obtaining the number of route sequence and requesting the routine(206-207);and requesting the routine after re-number translation by inserting the network identification code, when the route sequence is not a prerecorded way(208-210).
Patent KR-20000046376-A (KR)
Title: Apparatus for supplying induction clocks in optical transmission apparatus
Inventor: CHOI BYONG DEUK
IPC: H04B10/00
Filed: 1998-12-31
Abstract: PURPOSE: An apparatus for supplying induction clocks in an optical transmission apparatus is provided to generate a DS1E signal extracted and induced from a received optical signal, as used in an optical transmission apparatus carrying out optical signal type communication according to the synchronous digital hierarchy. CONSTITUTION: A reference clock selection unit(210) selects one out of an STM-16, an STM-14 or the tributary signal of an STM-1 as an input reference clock. A reference clock monitoring control unit(220) monitors the failure condition of the reference clock selected in the reference clock selection unit(210). An induction clock generation unit(230) generates a clock synchronized with the reference clock outputted from the reference clock selection unit(210). The induction clock output unit(240) forms an E1 frame for the clock generated in the induction clock generation unit(230) and outputs it by a DS1E signal to the external line.
Patent KR-19990035841-A (KR)
Title: 자동차 제어기 교환 방지 장치
IPC: B60R11/02
Filed: 1996-07-19
Abstract: 본 발명은 자동차에 설치된 제어기(10)가 지정되지 않은 자에 의해서 교환되는 것을 방지하기 위한 장치에 관한 것이다. 본 장치의 핵심은 제어기(10)와, 배전선(21)의 접속 기소(20) 간의 결합부위에 설치되는 기능억제 장치(11, 12, 13, 27)로서, 이 장치는 제어기(10)와 접속 기소(20)가 지정된 결합 위치에 서로 고정되도록 하는 역할을 한다. 제어기(10)에 해제 코드를 전달시켜야만 이 결합 위치로부터 파괴하지 않고 분리할 수 있다. 억지로 분리하려고 할 경우 기능억제 장치(11, 12, 13, 27)의 지정된 결합부위가 차단되어 원상복귀되지 않는다.
Patent KR-19990067031-A (KR)
IPC: A61F9/00
Filed: 1996-10-24
Abstract: A deformable intraocular lens injecting apparatus having a movable plunger with a deformable plunger tip, preferably a resiliently deformable plunger tip. In a preferred embodiment, the plunger tip is made of soft resiliently deformable material to prevent any surface or internal damage to the deformable intraocular lens being forced through a delivery passageway of the lens injecting apparatus.
Patent KR-19990067500-A (KR)
IPC: A61B19/00
Filed: 1996-11-05
Abstract: The device (50) comprises an outer sheath (56) having a proximal end and a distal end, and an inner plunger (52) having a proximal end and a distal end. The inner plunger is slideably disposed within the outer sheath. There is a prosthesis gripping member on the distal end of the inner plunger for engaging a proximal end of a prosthesis and drawing the prosthesis into the distal end of the outer sheath. The prosthesis gripping devices comprise a soft tear-resistant bulb (60).
Patent KR-20000064911-A (KR)
Title: 차량 탑승자 위치 센서
IPC: B60R21/16
Filed: 1998-02-05
Abstract: 본 발명은 별개의 위치에서 별개의 송신주파수를 갖는 다수의 초음파 송신기(12)가 공간의 하나 이상의 탐지구역에서 초음파 빔을 조정한다.  초음파의 진폭은 각각의 탐지구역(16)으로부터 각 초음파의 주파수 차이에 대응하는 주파수를 갖는 음파(17)를 발생시키기에 충분하다.  초음파 송신기(18)에 근접 배치된 수신기(18)는 발생된 음파를 탐지한다.  탐지구역을 점유하는 물체는 하나 이상의 빔을 방해하고, 발생된 음파(19)의 크기가 한계값 이하일 때 탐지된다.  본 발명의 다른 관점에서 초음파 송신기(12)들은 원형 탐지구역을 형성하도록 교차하고 시간에 따라 전파되어 물체의 프로파일을 탐지할 수 있는 비교적 넓은 구형 파면(38)을 형성하는 펄스를 송신하기에 적합하다.
Patent KR-20000050437-A (KR)
Inventor: KIM HONG WOON
IPC: F25B1/00
Filed: 1999-01-08
Abstract: PURPOSE: A heat exchange technique generated from a condenser and a freezing motor of a freezing apparatus and a cool air accumulation technique thereof are provided to perform cooling in predetermined spaces including a motor and a condenser without dissipating heat generated during compressing and condensing refrigerant. CONSTITUTION: In a heat exchange technique generated from a condenser and a freezing motor of a freezing apparatus and a cool air accumulation technique thereof, a first heat exchange chamber(1) formed at a lower part includes a cooling motor and a condenser for compressing and condensing a first refrigerant, wherein the cooling motor and the condenser are cooled at proper temperature and excessive heat is blocked from outside by an insulating material, a cooling air accumulation chamber(2) formed at a middle part includes first and second cooling air accumulating chambers, wherein the second chamber cools brine exchanging heat with the cooling motor and the condenser and the first chamber continuously cooling brine, thereby rapidly increasing freezing efficiency, and a second heat exchange chamber(3) is formed on an upper part for inhaling room air and discharging cool air and having a circulation pump for circulating the brine, a refrigerant distributer, an expansion side, and a filter.
Patent KR-20000051166-A (KR)
Inventor: CHU SEONG YEOP
IPC: H04N5/50
Filed: 1999-01-19
Abstract: PURPOSE: A fine control method using two tuners is provided to simplify the automatic fine control of the two tuners by transmitting automatic fine control data from a receiver tuner to a recorder tuner at every N hours in order to prevent recording errors. CONSTITUTION: A fine control method using two tuners includes first through third steps. At the first step(s2), an automatic fine control of a receiver tuner is performed. At the second step(s4), the automatic fine control data after finishing the automatic fine control of the receiver tuner is transmitted to a recorder tuner as automatic fine control data for the recorder tuner. At the third step(s5), the automatic fine control data from the receiver tuner to the recorder tuner is transmitted at every N hours.
Patent KR-20000051425-A (KR)
Inventor: YOON HYUNG CHUL
IPC: H03F3/189
Filed: 1999-01-22
Abstract: PURPOSE: A schmitt trigger switching circuit for improving characteristics of inter modulation distortion of a radio frequency transmit-receive device and a method for improving characteristics is provided to create a circuit that has automatic gain controlling capabilities. CONSTITUTION: A schmitt trigger switching circuit for improving characteristics of inter modulation distortion of a radio frequency transmit-receive device and a method for improving characteristics includes an on/off-type OP amplifier(10) which converts the level status of a automatic gain control voltage received by a high-frequency receiver into output. A NPN transistor(20) and a PNP transistor(40) submits the level status of a automatic gain control voltage that was converted into output to a base unit. A resistance(30) adjusts the scope of voltage level by connecting to a OP amplifier(10), a NPN transistor(20), and a PNP transistor(40) and synthesizing each. The method enables users to efficiently adjust carrier to noise ratio(C/N) of a final unit of the transmit-receive device and inter modulation distortion by changing the bias voltage level.
Patent KR-19990077393-A (KR)
IPC: C21D6/00
Filed: 1999-01-27
Abstract: 본 발명은 금형의 수명 저하 문제를 일으키지 않고, 펀칭성을 개선한 전자총 부품용 Fe-Ni 합금의 제조방법을 제공하는 것을 목적으로 한다. 
     그 해결 수단으로는, 중량 % 로 Ni : 30 ~ 55 %, Mn : 0.8 % 이하, Ti, Mg, Ce 및 Ca 중에서 1 종 또는 2 종 이상을 합계로 0.005 % 이상 그리고 0.5 % 미만을 함유하고, 잔부가 Fe 및 불가피한 불순물로 이루어지는 Fe-Ni 합금을, 기본적으로 용해, 주조, 열간가공, 냉간압연, 어닐링으로 이루어지는 공정으로 제조하는 전자총 부품용 Fe-Ni 합금의 제조방법으로서, Fe-Ni 합금은 S 의 함유량을 [%S], Ti, Mg, Ce, Ca 의 함유량의 합계를 [%X]로 했을 때, 0.00005≤[%X][%S]≤0.0100 을 만족시키고, 또한 열간가공을 하기 식으로 나타내는 온도 (T) 로 가열하여 행한다.