baber/WOPTO huggingface dataset:
Patent KR-20000015931-A (KR)
Title: Ferroelectric fibers and applications therefor
Inventor: TURKEVICH LEONID ANTHONY
IPC: B01D39/16
Filed: 1997-05-15
Abstract: PURPOSE: A ferroelectric fiber and an application thereof are provided for the fiber to obtain a large electric field partially and to improve the filtering efficiency of a web. CONSTITUTION: A fiber which includes a thermoplastic polymer and particles of a ferroelectric material dispersed therein. The thermoplastic polymer may be, for example, a polyolefin, such as polypropylene or polyethylene, and the ferroelectric material may be barium titanate. The ferroelectric material may be present at a level of from about 0.01 to about 50 percent by weight (from about 0.001 to about 13 percent by volume), and will have a longest dimension in a range of from about 10 nanometers to about 10 micrometers. The fiber may be exposed to an electric field. A plurality of the fibers may be employed to form a knitted or woven fabric or a non woven web. Also provided is a method of preparing fibers containing particles of a ferroelectric material. The method includes destroying the ferroelectric material in the presence of a liquid and a surfactant to give destroyed particles; the liquid is a solvent for the surfactant and the surfactant is adapted to stabilize the destroyed particles against agglomeration. A blend of the stabilized, destroyed ferroelectric material particles and a thermoplastic polymer is then formed and extruded to form fibers. The extruded fibers may be collected on a moving foraminous support to form a non woven web and, if desired, may be exposed to an electric field. The fiber of the present invention, especially when in the form of a non woven web, is especially suited as a filtration medium. For example, the non woven web may be adapted to remove particulate matter from a gaseous stream.
Patent KR-20000016094-A (KR)
Title: Synchronous compensator equipment
Inventor: LEIJON MATS
IPC: H01F29/14
Filed: 1997-05-27
Abstract: PURPOSE: A synchronous compensator equipment is provided to reduce the number of a electrical constitution element. CONSTITUTION: A magnetism circuit of a synchronous compensator equipment is comprised in an electrical instrument directly connected to high voltage more than 20-800kV and desirably 36kV. The electrical instrument has a solid isolator. A winder(s) is(are) surrounded by at least one external and one internal semiconductor layer(34, 32) and an intermediate insulating layer(33). The electrical instrument consisted one high voltage cable(6) has one or more a conductive lines(31) consisted by a plurality of small lines(36).
Patent KR-20000052168-A (KR)
Inventor: RYU GIL OH
IPC: H04N7/10
Filed: 1999-01-30
Abstract: PURPOSE: A broadcasting signal receiver providing a combined channel list of digital and analog broadcasting signals is provided to make a combined list of receivable digital and analog broadcasting signals. CONSTITUTION: A broadcasting signal receiver providing a combined channel list of digital and analog broadcasting signals includes an input(23), a display(20), a digital broadcasting signal processor(10) and an analog broadcasting signal processor(14). The input(23) inputs user key stroke. The display(20) display the signal on a screen. The digital broadcasting signal processor(10) receives and processes the digital broadcasting signal and outputs the result as a first video signal. The analog broadcasting signal processor(14) receives and processes the analog broadcasting signal and outputs the result as a second video signal. A screen configuration/controller(19) provides the first and the second video signals as well as the digital and analog channel list data.
Patent KR-20000056635-A (KR)
Inventor: OH YUN CHUL
IPC: G01N1/10
Filed: 1999-02-24
Abstract: PURPOSE: A sampling container is provided to prevent pollution of sample ultrapure water by shutting off introduction of ambient air when extracting a sample at a sampling point and supplying the prepared sample ultrapure water to an analysis device. CONSTITUTION: A sampling container includes a main body having an inner space for containing a sample solution, a lid for covering an inlet of the main body, a first injection tube(16) mounted in the lid for injecting a sampling solution into the inner space of the main body and connected to a sampling point(40) via a tube(42), a second injection tube(18) mounted in the lid for injecting purge gas into the inner space, and a discharge tube(20) mounted in the lid and connected to the injection an analysis device(30) for supplying the sample solution filled in the container to the analysis device, wherein introduction of ambient air is shut off when extracting a sample at the sampling point and supplying the sample solution to the analysis device.
Patent KR-20000059845-A (KR)
Inventor: KIM TAE HYEON
IPC: G11C7/00
Filed: 1999-03-09
Abstract: PURPOSE: A high-speed memory device is provided to minimize a data reading access time by directly transmitting a data being recorded in memory core block to an output pipe line without passing through a memory core block. CONSTITUTION: A semiconductor memory device includes a memory core block(210), an input pipe line block(220), an output pipe line block(230) and a switch part(240). The input pipe line block(220) inputs many recording data being serially input from external part to the memory core block in parallel. The output pipe line block(230) inputs many reading data being generated from the memory core block, and serially outputs the input reading data. The switch(240) connects an output line of the input pipe line to the input line of the output pipe line block. Thereby, the high-speed memory device minimizes a data reading access time by directly transmitting a data being recorded in memory core block to an output pipe line without passing through a memory core block.
Patent KR-19990077759-A (KR)
Title: 수치 제어 장치
IPC: G05B19/408
Filed: 1999-03-10
Abstract: 하드 디스크 등의 기구 부품을 구비한 기억 장치를 필요로 하지 않고도, 사용자 작성의 소프트웨어를 이용할 수 있고, 수치 제어부, 표시 제어부, 기계 조작부의 배치 위치, 결합도 임의로 용이하게 행할 수 있는 수치 제어 장치를 제공한다. 
     표시 제어부(2)의 ROM(2d)에는 반도체 메모리 상에서 실행 가능한 오퍼레이팅 시스템과 표시 제어용의 소프트웨어를 저장한다.  키보드(3a), 기계 조작반(3b)으로 구성되는 기계 조작부(3)를 표시 제어부(2)에 접속하고, 수치 제어부(1)와 리얼 타임으로 통신한다.  통신 포트(2e)를 통해 데이타 입출력 기기(7)로부터 사용자 작성 소프트웨어를 불휘발성 메모리(2c)에 저장하여 실행한다.  수치 제어부(1)와 표시 제어부(2)를 분리해도 표시기(2k)와 기계 조작부(3)를 근방에 배치할 수 있어 조작성이 좋아진다.
Patent KR-20000060221-A (KR)
Inventor: CHA DAL GWAN
IPC: G05B19/05
Filed: 1999-03-12
Abstract: PURPOSE: A method for collecting a data of PLC is provided to allow the user to read/analyze many data, by receiving a data collection command from a peripheral device, storing a desired data every constant period, and transmitting the data to a peripheral device. CONSTITUTION: A data collection period, a collection condition, a collection data area and the number of collection times are registered(S601). If the registration is completed, a registration completion signal is generated(S602). If there is a data collection command after the registration completion, a data corresponding to a registered data area from the data area is read every collection period from a time point at which the collection condition is satisfied(S604), and then the data is stored(S606) in the data collection area. The step for collecting/storing the data is repeated by the number of collection times until the collection step is completed. If the collection step is completed(S607), a collection completion signal is transmitted. If there is a collection data request command(S609), a collected data is transmitted(S610) to a peripheral device. Thereby, the user can read many data which are quickly changed than a communication speed, and analyzes them, thereby making easy debugging step.
Patent KR-20000061334-A (KR)
Inventor: KO HAN SEOK
IPC: H01L21/76
Filed: 1999-03-25
Abstract: PURPOSE: A method for manufacturing a shallow trench for isolating a semiconductor device is provided to improve the productivity and reliance of the semiconductor device by stably reducing the current leakage. CONSTITUTION: A pad oxide film(12) and a nitride film(13) are formed on an upper portion of a silicon wafer(11). A moat pattern is formed by patterning the pad oxide film(12) and the nitride film(13). A trench is formed by moat etching the silicon wafer(11). A liner oxide film(14) is formed in a side wall of the trench by thermally oxidizing the silicon wafer(11). Then, an NSG film is filled in the trench. Before the NSG film is filled in the trench, the upper portion of the liner oxide film(14) is treated by using N2O plasma. The NSG film filling process is carried out by using the TEOS/O3 high temperature chemical vapor deposition.
Patent KR-20000061473-A (KR)
Inventor: KIM BEOM SEOP
IPC: H03K5/134
Filed: 1999-03-26
Abstract: PURPOSE: A duty rate corrector is provided to appropriate in low voltage source, to embody in simple construction and to cut down design area of circuit and electric power consumption. CONSTITUTION: A duty rate corrector is composed of a first input port(301), a second input port(302) and CMOS logic gate(303). A first signal(Vin1) having a prescribed duty rate is inputted to the first input port(301). A second signal(Vin2) delayed 180°phase in comparison with the first signal(Vin1) is inputted to the second input port(302). The CMOS logic gate(303) is triggered by rising edge of the first signal(Vin1) and generates an output signal(Vout) in high level. Also, the CMOS logic gate(303) is triggered by rising edge of the second signal(Vin2) and generates the output signal(Vout) in low level. Accordingly, the CMOS logic gate(303) always generates the output signal(Vout) having 50% duty rate through an output port(304), because it performs precharge and discharge operation between 180°phase regardless of duty rate of the first and second signal(Vin1, Vin2).
Patent KR-19990078335-A (KR)
Title: 기판처리방법 및 기판처리장치
IPC: C23C16/08
Filed: 1999-03-27
Abstract: 처리가스로서, 결합력이 강한 할로겐원자(F등)와, 결합력이 약한 할로겐원자(I등)의 양자를 포함하는 가스(CF m I n 등)을 사용하여, 이것을 약한결합은 해리하지만 강한결합은 해리하지 않는 여기에너지를 가지는 여기수단으로 여기하여 처리를 실행한다.  여기수단으로서는 전자선조사나 광조사등의 여기에너지의 단색화가 가능한 것, 혹은 UHF플라즈마등의 전자에너지분포가 급격한 피크를 가지는 플라즈마가 효과적이다.  플라즈마등을 사용하는 에칭이나 박막증착등의 기판처리에 있어서, 원하는 라디칼·이온을 원하는 양만큼 생성한다.
Patent KR-20000022614-A (KR)
Inventor: GADNER MICHAEL J
IPC: H01R4/24
Filed: 1999-04-15
Abstract: PURPOSE: A selection connection connector assembly is provided to reduce connection failure error, to present double connection function, and to simplify the structure. CONSTITUTION: A selection connection connector assembly comprises a connector housing (111) having a mating face(117), a terminating face(116) containing cables, and plural terminal-inserting paths; and plural conductive terminals(130) inserted into the paths. The terminal has a thin and long mating part mated to the mating face and an insulator removing part connected to the terminating face in first and second arrays. the terminals of a third array have a thin and long mating part mated to the mating face and an insulator removing part connected to the terminating face.
Patent KR-20000066454-A (KR)
Inventor: JI YOUNG BAE
IPC: F04D29/40
Filed: 1999-04-16
Abstract: PURPOSE: A vacuum self-priming pump is provided to reduce the manufacturing costs due to the simple structure thereof and promptly repair the pump with assembling and disassembling a cover. CONSTITUTION: A vacuum self-priming pump including an external casing having a suction port, a discharging port and a U shape transfer groove; an internal casing having a U shape transfer; and an impeller(8) formed between the external casing and the internal casing, wherein the vacuum self-priming pump includes an internal casing having a suction port(11), a discharging port(12) and a U shape transfer groove combined in the axial direction of a motor(1); and a cover(20) closely attached to the outside of the internal casing.
Patent KR-19990083306-A (KR)
Title: 연산증폭방법및연산증폭기
IPC: H03F1/30
Filed: 1999-04-19
Abstract: 본 발명에 따른 연산 증폭 회로 (100) 는  차동 증폭 회로 (1), 전류 미러 회로 (3 및 4), 부하 트랜지스터 (103 및 104) 및 트랜지스터 (104 및 204) 를 구비한다.    차동 증폭 회로 (1) 는, 비반전 입력 단자 (7) 및 반전 입력 단자 (8) 에 입력하는 신호를 증폭하며, 전류 미러 회로 (3) 에 의해 제공되는 결과의 차동 전류를 반전 전류 유입 단자 (10) 및 비반전 전류 유입 단자 (11) 에 유입시키는 반면, 반전 전류 유출 단자 (12) 및 비반전 전류 유출 단자 (13) 로부터 전류 미러 회로에 대응하는 차동 전류를 유출시킨다. 
     단자 (11) 에 유입되는 차동 전류는  부하 트랜지스터 (103) 에 의하여 전압으로 변환되어 그 전압이 p 채널 트랜지스터 (104) 를 구동하는 반면, 단자 (13) 로부터 유출되는 대응하는 차동 전류는  부하 트랜지스터 (203) 에 의하여 전압으로 변환되어 그 전압이 n 채널 트랜지스터 (204) 를 구동한다.
Patent KR-20000073777-A (KR)
Inventor: LEE SANG HUN
IPC: G01B11/24
Filed: 1999-05-14
Abstract: PURPOSE: An optical system for a corneal curvature measurer is provided to prevent the change of size even if a focusing error occurs when a distance between an examined person's eye and the corneal curvature measurer is not exactly kept. CONSTITUTION: An image of meyering(MR) passing through a focusing lens(L1-1) offsets a numerical difference by an image lens(L1-2). At the same time, the image of meyering images the image of the meyering reflected from a corneal into a proper size in an image sensor. An optical image is changed to an electric signal by an image sensor and displayed on a monitor through an operator. Herein, an examiner gives a measurement order to the operator after focusing on the corneal(C) while looking at the monitor. The image sensor changes the meyering image to the electric signal and sends the electric signal to the operator. The size of the meyering image is analyzed and converted to a curvature value of the corneal(C). Then the examiner recognizes the curvature value of the corneal of the examined eye(E) through the monitor.
Patent KR-20000074338-A (KR)
Inventor: KIM HO JIN
IPC: G07G1/12
Filed: 1999-05-20
Abstract: PURPOSE: A method and a device for automatically resetting an electronic cash register are provided to automatically reset the system in response to a wrong operation of the system. CONSTITUTION: Normal clocks are outputted from a CPU(Central Process Unit) by normal operation. A watchdog timer counts the clocks. By counting a specific number of clocks, a logic high signal is output to an interrupt terminal of the CPU. Otherwise, a logic low signal is output to the CPU. Then, a presently processed data is stored for outputting a trigger signal through an output port(P1). A reset circuit unit receives the trigger signal for outputting a reset signal to a reset terminal of the CPU. By the reset signal, a system is reset.
Patent KR-20000056955-A (KR)
Inventor: MIMURA KENJI
IPC: F16H29/12
Filed: 1999-06-08
Abstract: PURPOSE: A continuous variable transmission is provided to reduce a vibration on rotating and to handle sufficiently on needing the high rotation. CONSTITUTION: A continuous variable transmission comprises : an input shaft(2) and an output shaft(3) to be equipped on the same shaft ; the first rotter(4) to rotate in one body with an input shaft(2) ; several second rotter(5) to be connected with the first rotter(4) in a straight line, to move freely, and to bias the center of rotation in a diameter direction on the basis of an input shaft(2) ; the third rotter(6) to bias the center of rotation on the basis of an input shaft(2) ; a one directional clutch(7) to transmit the rotary power of the second rotter(5) to the third rotter(6) ; a rotter case(8) to support the second rotter(5) and the third rotter(6) for moving and biasing ; a changing tool(9) to bias a rotter case(8) ; the fourth rotter(10) to be rotated by the third rotter(6) ; four planetary gears(11) to be supported by the fourth rotter(10), to move freely, and to rotate an output shaft(3).
Patent KR-20010008784-A (KR)
Inventor: SHIN HYEON JAE
IPC: B67B3/00
Filed: 1999-07-03
Abstract: PURPOSE: A closing device for the stopper of a bottle is provided to execute the whole process successively while the bottle to be bound with a stopper is supplied by a conveyor and then automatically discharged after the stopper is fastened, so that the cost of labor is reduced and the exact and rapid work is possible. CONSTITUTION: A closing device comprises; a gear(11) rotated by a motor(9); two driven gears(12,12') installed in the gear to be rotated with the gear; and wheels(15,15') bound to rotation shafts(14,14') of the driven gears(12,12'). In both upper-parts of a conveyor(8), guide rails(1,1') supported by supporting rods(3,3') and connection shafts(4,4') are installed in the direction of length. In the lower part of the wheels, cylinders(7,7') are placed in both sides of the conveyor to support the bottle(19). And in the forward area, cylinders(6,6') extended and contracted to be crossed are placed during being apart at certain intervals. Location centers(5,5') are installed before the cylinders(6,7) to drive the cylinders(6,7) by sensing the arrival of the bottle. In a work stand(13) in which the motor(9) and the wheels are installed, an idle wheel(17) driven by an actuator(16) is installed to be rotated by being contacted the stopper(18) when the wheels are rotated.
Patent KR-20010010239-A (KR)
Inventor: JEONG SOOK JA
IPC: A23L2/38
Filed: 1999-07-16
Abstract: PURPOSE: Functional garlic drink composition and a manufacturing method thereof are provided by adding raw garlic extract removed in a garlic smell. CONSTITUTION: A manufacturing method of functional garlic drink composition comprises the steps of: soaking a raw garlic in soda alginic acid to deodorize at 40-50deg.C; grinding the deodorized garlic by a mixer; obtaining upper solution by filtering the grinded garlic juice with a filtering paper or by centrifuging the garlic, or performing column-chromatography after ultra filtration; and mixing the garlic extract with a drink. An aqueous solution for soaking is soda alginic acid or calcium alginic acid. The concentration of the aqueous solution is 5-10% and the soaking time is 5-12 hours. Clay minerals of 1-5% are mixed to minimize the deodorizing time and to keep a peculiar color of the garlic. Effective clay minerals are montmollilonite and bentonite having a high CEC.
Patent KR-20010010498-A (KR)
Inventor: LIM CHAN GYU
IPC: B60R21/213
Filed: 1999-07-20
Abstract: PURPOSE: A structure for protecting the head of an occupant of a vehicle is provided to remove a damage on an occupant when an air bag is deployed due to a collision or an overturn. CONSTITUTION: An air bag(3) is installed in a roof side inner rail(1) by a bracket(2). A head lining(4) is placed in front of the air bag. A hanging protrusion(15) is formed in the other portion of a support unit(8) of a center pillar trim(6) supporting the head lining. The hanging protrusion is hung on a hanging hole(16) formed in a center pillar inner panel(5). The air bag is connected with an inflater installed in a rear pillar(17) while being supported on the bracket. The air bag is deployed by the operation of the inflater in a side-on collision. The bracket is fixed on the roof side inner rail by a bolt(7). The head lining supported on the support unit is not displaced into the interior of a vehicle unless the air bag is deployed according to the supporting force of the support unit.
Patent KR-19990078660-A (KR)
Title: 전자식자동전원스위치
Filed: 1999-07-22
Abstract: 본 발명은 오디오 신호에 의한 자동 전자식 스위치에 관한 것으로 상세 
     하게는 반도체 회로를 사용하여 오디오의 신호를 판별하여 컴퓨터외부에 
     부착된  스피커의 전원을 자동으로 켜고 끄게하는 자동전원스위치 
     장치에 관한 것이다.
Patent KR-20010027414-A (KR)
Title: 전화와 컴퓨터를 사용하여 여러 사람에게 동시에 전화,
Inventor: YANG JAE RYONG
IPC: H04M11/00
Filed: 1999-09-11
Abstract: (1)발명이 속한 기술분야 
     기존 CTI(Computer Telephony Integration) 기술를 기반으로 하되 고객을 관리하는 Call Center의 국한된 기술에서 벗어나 새로운 고객 만족을 창출할 수 있는 다양한 CTI-Application과 CTI-Solution을 개인용 데스크탑에서 실현 개발하여 획기적인 저비용을 달성하며, 또한 단순한 이기종간의 정보공유만이 아닌 그 연결된 장치들의 제어와 망을 함께 구성하여, 개별적인 호신호를 PSTN(Public Switched Telephone Network:공중 전화망)을 통하여 동시에 송신을 할 수 있는 기술입니다. 
     (2)발명의 목적 
     일상 생활을 하다 보면 많은 불편함을 느낍니다. 하지만 어느 것들은 어쩔 수 없다는 생각에 불편함 조차를 느끼지 못하고 사는 것이 또한 현실입니다. 하지만 생각을 바꾸고 어떤 것이든 새로운 것이나, 새로운 방법을 한 번 사용해 보면 예전의 것들이 얼마나 불편했다는 것을 알 수 있습니다. 특히, 컴퓨터는 어떠한 목적의식으로 사용되는 특별한 장비에서 점차적으로 TV처럼 일상 생활에 필요한 전자제품으로 그 범위가 확대 해석되어 지며, 또한 다양화되어 인식 역시 바뀌고 있습니다. 하지만 아직도 일상 생활과는 거리가 먼 특정 업무만을 지원하는 경우가 대부분이며, 일반인들을 위한 Application-Program은 컴퓨터의 보급에 비해 극히 미진한 상태입니다. 
     또한 우리 나라의 국민 성향은 모임과 연락을 중요시 하는 경향이 많습니다. 따라서 전화의 사용량은 엄청나며 또한 그 일반성의 범위는 아이부터 어른까지 실로 전 국민 모두라고 해도 과언이 아닐 정도의 범위를 갖고 있습니다. 어쩔수 없이 전화를 사용하는 것이 담보는 아닐 것입니다. 실제로 전화는 보급에 비해 Application 기술 개발은 거의 전무합니다. 
     따라서 가장 일상적인 전화와 컴퓨터를 이용하여 일반사람 모두가 보다 편리하고 신속한 일들을 할 수 있도록 개발하여 개선하고자 하는 것이 목적입니다. 
     (3)발명의 구성 
     알림콜은 컴퓨터 소프트웨어 프로그램이며 8개의 음성보드를 각각 제어할 수 있습니다. 음성보드는 4개의 회선을 지원하며 총 32회선을 제어합니다. 
     따라서 알림콜은 한번에 32통화를 할 수 있으며 인원의 제한 없이 연속해서 자동 전화 걸기를 시도한다. 알림콜은 현재 데스크탑에서 가능 회선인 최대128회선을 지원할 수 있기 때문에 동시에 128명에게도 전화를 할 수 있습니다. 
     또한 알림콜은 다른 지역의 알림콜을 무인 원격 조정을 하여 자동으로 데이터가 이동할 수 있수 있으며, 자동 전화 걸기에 실패(통화중,부재중) 할 경우 이동전화, 팩스, 이메일, DM발송 등으로 자동 연결하여 내용을 전달합니다. 
     (4)발명의 효과 
     모임과 연락을 중요시 하는 우리 나라의 경우 대부분 같은 내용을 여러 명에게 전달을 해야 할 경우가 많습니다. 하지만 일일이 전화를 하기에 너무나 많은 사람은 시간이 너무나 많이 듭니다. 따라서 한번에 몇십명, 100명, 등 여러명에게 동시에 전화를 건다면 아주 편리해지는 것을 떠나 시간적 비용을 획기적으로 줄일 수 있습니다.
Patent KR-20010036536-A (KR)
Inventor: HAN SEUNG TAE
IPC: A47D7/00
Filed: 1999-10-09
Abstract: PURPOSE: A prefabricated crib is provided to be used as a showcase for keeping books and toys by reassembling simply when a crib is not suitable for infants any more after the infants grow up. CONSTITUTION: A sectional crib(10) comprises a front frame(11) and a rear frame(12) in long square shape coupled to the front and rear of the crib, side frames(13,15a,15b) on the right and left sides of the crib, wherein one of side frames is divided into two vertically, a bed board(16) having a bisectional structure longitudinally on the floor of the crib, and two bottom boards(17a,17b) furnished in addition to the bed board, so that the space between the bed board and the bottom boards is able to be used as a storage space.
Patent KR-20010025135-A (KR)
Inventor: HAN MYEONG SEOP
IPC: C09C1/62
Filed: 1999-10-09
Abstract: PURPOSE: A black oxide composition is provided which black-colors the surface of the metal such as steel, cast iron, zinc and the like at room temperature and is able to remarkably extend life of parts such as various mechanic parts, electronic parts, equipment of munitions, building materials and the like. CONSTITUTION: The black oxide composition comprises: (i) 0.05-0.5 wt.% of zinc oxide; (ii) 1.0-5.0 wt.% of phosphoric acid; (iii) 0.3-1.0 wt.% of at least one of copper sulfate and copper nitrate; (iv) 0.1-0.5 wt.% of at least one of nickel sulfate and nickel nitrate; (v) 1.0-3.0 wt.% of selenium dioxide; and (vi) a residual quantity of water.
Patent KR-20010037344-A (KR)
Inventor: NAM GO JANG
IPC: B29C33/40
Filed: 1999-10-15
Abstract: PURPOSE: An acrylic panel manufacturing method easily and variously engraves letters and patterns on acrylic panels and implements a glazing treatment or a dull treatment on the desired portions of the patterns and the letters. CONSTITUTION: Required letters or patterns are engraved on stainless steel panels(10) as intaglios. Acrylic resin(16) is injected between the stainless steel panels(10) where the letters or the patterns are engraved. A first acrylic panel is manufactured by drowning the stainless steel panels(10) sealed therebetween into water of 60-70°C. The first acrylic panel is softened after being put in a heated electric furnace. The softened first acrylic panel is compressed by a press. Then, air is exhausted from the softened first acrylic panel.