baber/WOPTO huggingface dataset:
Patent KR-20020054130-A (KR)
Title: A power amplifier for wireless terminal
Inventor: HAN CHUNG SU
IPC: H03F1/02
Filed: 2000-12-27
Abstract: PURPOSE: A device for amplifying power of mobile communication terminal is provided to decrease an unnecessary current and improve an efficiency of a power amplifier by switching a power supplied to a bias circuit on/off and controlling a base current of the power amplifier. CONSTITUTION: A power supply unit(11) supplies a DC(Direct Current) power. A power amplification unit(12) amplifies a signal inputted through an input tap as the power supply unit(11) permits the power. A bias unit(13) maintains a bias of the power amplification unit(12) and generates a bias current. A bias power unit(14) supplies the bias unit(13) with a power through an on/off operation to control the bias current permitted into the power amplification unit(12).
Patent KR-20010087150-A (KR)
Title: Thermally-assisted magnetic recording device, thermally-assisted magnetic reproducing device and electron beam recorder
Inventor: AKIYAMA JUNICHI
IPC: G11B5/00
Filed: 2000-12-28
Abstract: PURPOSE: A magnetic recording/reproducing device and electron beam recorder is provided which is capable of remarkably improving recording density by a new configuration based on a principle different from that of a conventional magnetic recorder. CONSTITUTION: A reference(S) indicates a head substrate, X a medium moving direction, a recording magnetic pole assembly(10), a main magnetic pole(11), a return-path magnetic pole(12), a tip of the main magnetic pole(13), a connection(14) between the main magnetic pole(11) and return-path magnetic pole(12), a leading portion(15) of the recording magnetic pole assembly(10,16), a trailing portion of the recording magnetic assembly(10,17) a recording magnetic flux, 21 a recording coil, a layer(22) in which the recording coil(21) is buried, an electron emitter electrode layer(30), an electron emitter(40), an electron beam(41), a protective layer(50), a medium body(60), a recording layer(61), a soft-magnetic lining layer(62), an electron beam-incident portion(63) of the medium(60,64), a magnetically recording portion of the medium and a magnetization of the medium. In the above structure, the recording magnetic-pole leading portion(15), recording magnetic-pole trailing portion(16) and protective layer(50) are not always necessary.
Patent KR-20020055472-A (KR)
Title: Brine bath room
Inventor: LEE WON WOO
IPC: A47K3/02
Filed: 2000-12-28
Abstract: PURPOSE: A salt water bathtub is provided to relieve the pain caused from various diseases such as inflammation of a joint and neuralgia, and to always maintain a constant salt degree. CONSTITUTION: The salt water bathtub(1) is provided with a salt container(2) installed within the bathtub by a support leg(2b) in order to maintain a constant height so that a half portion of the salt container full of salt is soaked under water(1a) received in the bathtub. The salt container is formed with a plurality of passage holes(2a) along the outer peripheral surface thereof. Alternately, the salt container takes a shape of net style bag.
Patent KR-20020029590-A (KR)
Title: Reflection type photomask
Inventor: HOSHINO EICHI
IPC: G03F1/68
Filed: 2000-12-28
Abstract: PURPOSE: A reflective photomask is provided to be adapted to a fine process using an exposure wavelength of an extreme-ultraviotet(EUV) region, by preventing damage to the surface of a reflective layer and by preventing a decrease of a reflectance ratio. CONSTITUTION: The reflective layer(12) is formed on a substrate(11), composed of a multilayered layer wherein two different layers are stacked. A buffer layer(13) composed of a metal layer is formed on the reflective layer. An absorbing material pattern(14) is composed of a material capable of absorbing X-rays formed on the buffer layer, having a predetermined pattern type. The metal layer of the buffer layer is ruthenium.
Patent KR-20010022474-A (KR)
IPC: C08G18/38
Filed: 1998-07-31
Abstract: The present invention relates to a coating composition comprising:(a) at least one oxazolidine functional compound,(b) at least one isocyanate functional compound, and(c) at least one compound selected from the group consisting of a mercapto functional compound, a sulfonic acid functional compound, and mixtures thereof.The invention further relates to a method of coating a substrate with the coating composition and to a substrate coated with the coating composition.
Patent KR-20010022715-A (KR)
Title: 배기가스처리용 연소기
IPC: F23D14/26
Filed: 1998-11-19
Abstract: 배기가스처리용 연소기는 연소실(11)에 면하여 둘레벽(13)으로 둘러싸이고 바닥벽(14)으로 폐색시킨 불꽃유지부(15)를 설치하고, 상기 둘레벽(13)에 보조연소가스(B)를 상기 불꽃유지부(15)를 향하여 선회류를 만들어내도록 분출하는 보조연소가스용 불꽃구멍(23)을, 상기 바닥벽(14)에 배기가스(A)를 상기 불꽃유지부(15)를 향하여 분출하는 배기가스용 불꽃구멍(22)을 각각 설치한 것을 특징으로 한다.
Patent KR-20010023781-A (KR)
Title: 글리치를 억제하기 위한 필터 장치를 갖는 디지털 회로
IPC: H03K5/1252
Filed: 1998-08-24
Abstract: 본 발명은 글리치를 억제하기 위한 필터 장치를 갖는 디지털 회로에 관한 것이다.  본 발명에 따라, 디지털 회로는 신호 입력부(IN) 및 신호 출력부(OUT1')를 갖는다. 상기 디지털 회로는, 입력부는 신호 입력부(IN)에 접속되어 있고, 출력부(OUT1)는 스위칭 소자(SW1)를 통해 신호 출력부(OUT1')에 접속된 논리 회로 장치(S1)를 갖는다.  또한 디지털 회로는, 입력부는 신호 입력부(IN)에 접속되어 있고, 출력부는 스위칭 소자(SW1)의 제어 입력부에 접속된 필터 장치(F)를 갖는다.  상기 필터 장치(F)는 입력부에 인가되는 디지털 신호(A)의 글리치를 억제하는데 사용된다.
Patent KR-20010030666-A (KR)
Title: Ｃｄｍａ 이동 단말 장치
IPC: H04W36/36
Filed: 1999-07-23
Abstract: 본 발명은 아이들 핸드 오버 제어에 있어서, 동기 확립중인 파일럿 채널의 수신 품질을, 데이터를 에러 없이 수신 가능한 품질 클래스 "1"과, 허용 가능한 에러의 범위로 데이터를 수신 가능한 품질 클래스 "2"와, 데이터를 품질 좋게 수신하는 것이 곤란한 품질 클래스 "3"중 어느 하나로 분류하고, 또한 이들 품질 클래스에 각각 6 dB, 4 dB, 2 dB 라고 하는 상이한 판정 기준치를 설정한다. 그리고, 동기 확립 후보가 되는 다른 파일럿 채널의 수신 품질이 동기 확립중인 파일럿 채널의 수신 품질보다, 그 동기 확립중인 파일럿 채널이 분류된 품질 클래스에 대응하는 판정 기준치 이상 큰지 아닌지를 판정한다. 그리고, 크다고 판정된 경우에만 핸드 오버 처리를 행하고, 그 이외의 경우에는 핸드 오버 처리를 행하지 않고 동기 확립중인 파일럿 채널에 대한 동기 상태를 유지하도록 한 것이다.
Patent KR-20010032240-A (KR)
Title: 금속 분말 사출 성형품의 언더 컷 형성 방법 및 언더 컷을구비하는 금속 분말 사출 성형품
IPC: B22F3/22
Filed: 1999-09-13
Abstract: 간단한 공정에 의한 금속 분말 사출 성형품의 언더 컷 형성 방법 및 이러한 형성 방법에 의해 형성된 언더 컷을 구비하는 금속 분말 사출 성형품을 제공하기 위해, 금속 분말과 결합 수지를 포함하는 혼합물을 사출 성형하는 공정과, 사출 성형에 의해 얻어지는 사출 성형체에 언더 컷을 형성하는 공정과, 상기 언더 컷이 형성된 사출 성형체를 탈지 후 소결하는 공정을 갖는다.  언더 컷은 사출 성형체의 적어도 일부를 변형시킴으로써 형성하는 것이 바람직하며, 가압 부재에 의한 가압에 의해 변형시키는 것이 보다 바람직하다.
Patent KR-20010033616-A (KR)
IPC: H03K19/00
Filed: 1998-12-16
Abstract: MOSFET에 의해 구성되는 반도체 집적 회로 장치에 있어서, MOSFET의 누설 전류에 의한 소비 전력의 증가와 동작 속도의 조화를 적합하게 도모한 반도체 집적 회로 장치를 제공하는 것을 목적으로 하고, 반도체 집적 회로 장치 내의 복수의 신호 경로에 대해, 신호 경로에 따라 신호가 전해지는 딜레이를 감안하여, 딜레이에 여유가 있는 경로에 있어서는 고임계치 전압의 MOSFET에 의해 구성하고, 반대로 딜레이에 여유가 없는 경로에 있어서는 누설 전류는 크지만 동작 속도가 빠른 저임계치 전압의 MOSFET에 의해 구성된다.
Patent KR-20010040825-A (KR)
Title: 중형다공성 탄소의 제조방법
IPC: B01J35/04
Filed: 1998-12-10
Abstract: 본 발명에 따른 중형다공성 탄소 및 이의 제조방법은, 탄화될 때 경화물 기준으로 약 40% 초과의 탄소를 얻는 다량의 탄소-산출 탄소 전구체, 및 금속 촉매, 탄화될 때 경화물 기준으로 약 40% 이하의 탄소를 얻는 저량의 탄소-산출 탄소 전구체 및 이들의 혼합물로 이루어진 군으로부터 선택된 첨가제를 포함하는 혼합물을 형성하는 단계를 수반한다. 상기 금속 촉매가 사용될 때 탄화 단계 후에 금속 촉매의 양이 탄소 기준으로 약 1중량% 이하이다. 상기 혼합물이 경화되고, 탄소 전구체는 탄화되고 활성화되어 중형다공성 활성탄을 제조한다.
Patent KR-20010041580-A (KR)
IPC: F03B17/06
Filed: 1999-03-05
Abstract: A prime mover for extracting power from moving water is described comprising a body which is caused to oscillate in water by reversing the direction of thrust generated by at least one submerged control member e.g. a hydroplane or rotating cylinder protruding from a side of the body.
Patent KR-20010042440-A (KR)
Title: 전류 보상 바이어스 발생기 및 그 제공 방법
IPC: H03M1/06
Filed: 2000-02-02
Abstract: 본 발명은 전류를 발생하는 바이어스 발생회로를 구비한 전류보상 바이어스 발생기에 관한 것이다. 전류보상 바이어스 발생기의 입력 전압이 변화될 때 전류 값을 변화시키기 위해 전류보상회로가 바이어스 발생 회로에 결합된다. 저항성 래더(ladder) 회로가 상기 전류보상회로에 결합되어 상기 전류 값을 변화시켜야 할 시점에서 전류보상회로에 대한 전압 레벨 트립 시점을 설정한다.
Patent KR-20010052445-A (KR)
Title: 메모리 리클레임 방법 및 장치
IPC: G06F12/02
Filed: 2000-03-07
Abstract: 식별 포인터들로 연결된 데이터 오브젝트들을 구비하는 데이터 구조들에 할당된 메모리 공간을 리클레이밍하기 위한 방법 및 장치이다.  데이터 오브젝트들에 할당된 메모리는 2개의 시스템들을 사용하여 리클레이밍된다.  제 1 시스템(240)에 있어서, 데이터 구조들은 다른 오브젝트들의 포인터들에 의해 만들어진 참조들이 없는 오브젝트들을 식별하기 위해 트래버스되고, 만들어진 참조들이 없는 오브젝트들에 할당된 메모리는 리클레이밍된다.  제 2 시스템(210)에 있어서, 루트 오브젝트들의 자식들이 아닌 오브젝트들이 결정되고, 그 오브젝트들에 할당된 메모리는 리클레이밍된다.  제 1 시스템의 사이클들은 제 2 시스템의 사이클들과 인터리빙된다.
Patent KR-20010052701-A (KR)
Title: 벤조(ｂ)티에핀-1,1-디옥사이드 유도체, 이의 제조방법,이를 함유하는 약물 및 이의 용도
IPC: A61K38/00
Filed: 1999-05-28
Abstract: 본 발명은 치환된 벤조(b)티에핀-1,1-디옥사이드 유도체 및 이의 산부가염에 관한 것이다.  본 발명은 화학식 I의 화합물, 생리학적으로 상용성인 염, 생리학적으로 작용성인 유도체 및 이의 제조방법에 관한 것이다.  당해 화합물은, 예를 들어 저지혈증 제제로서 적합하다. 
     화학식 I 
     
       
     
     상기 화학식 I에서, 
     R 1 , R 2 , R 3 , R 4 , R 5 및 Z는 제1항에서 정의한 바와 같다.
Patent KR-20010071464-A (KR)
IPC: H01M8/02
Filed: 1999-06-11
Abstract: A fuel cell for production of electrical energy, such as a fuel cell, comprising a fuel chamber ( 1 ), an anode ( 2 a), a cathode ( 2 b), an electrolyte ( 3 ) disposed between said anode and said cathode, an oxidant chamber ( 4 ), wherein said chambers ( 1 and 4 ) enclose said anode, cathode and electrolyte, wherein a fuel flowing from the fuel chamber is oxidized at the anode, thereby producing electrical energy, wherein said electrolyte ( 3 ) is a ceramic composite electrolyte comprising at least one salt and at least one oxide in mixture.
Patent KR-20010074512-A (KR)
Title: Exchanged zeolites x, in particular exchanged with lithium, their process of preparation and their use as adsorbents of nitrogen in the separtation of the gases of the air
Inventor: MASINI JEAN JACQUES
IPC: C01B39/02
Filed: 2001-01-04
Abstract: PURPOSE: Zeolites X that are exchanged with lithium and with trivalent and/or divalent ions have selective adsorption characteristics for nitrogen as well as have an improved thermal stability together with an improved crystallinity. CONSTITUTION: In a process for the preparation of zeolites X of exchangeable cations in which the Si/Al atomic ratio thereof is less than 1.5 and it comprises, referred to as equivalents, from approximately 50 to approximately 95% of lithium ions, from approximately 4 to approximately 50% of trivalent ions chosen from aluminium, scandium, gallium, iron(III), chromium(III), indium, yttrium, lanthanides or rare earth metals, alone or as a mixture, and/or of divalent ions chosen from calcium, strontium, zinc, copper, chromium(II), iron(II), manganese, nickel or cobalt, alone or as a mixture, 0 to approximately 15% of residual ions chosen from sodium, potassium, ammonium or hydronium, alone or as a mixture, the process is characterized in that it comprises the following stages: a) suspension of the zeolite in water, then b) exchange of the exchangeable cations of the suspended zeolite with one or more di- and/or trivalent ions by simultaneous and/or successive contact(s) in a rapid mixer of the suspension with one or more solutions comprising compounds of the di- and/or trivalent ions, c) exchange of the exchangeable cations of the zeolite resulting from stage b) with lithium.
Patent KR-20020061708-A (KR)
Title: Apparatus and method for transmitting and receiving audio signals
Inventor: YOO GYEONG HO
IPC: G11B20/10
Filed: 2001-01-17
Abstract: PURPOSE: A device and a method for transmitting audio are provided to correctly recognize a left audio signal and a right audio signal, though the transmitted left audio signal and right audio signal are received reversely. CONSTITUTION: A first synthesizer(22) of an audio transmitting unit(20) synthesizes a left audio signal(AUDIO-L) and a right audio signal(AUDIO-R), and outputs a synthesized result as a first synthesizing element. A first subtracter(24) of the audio transmitting unit subtracts the right audio signal from the left audio signal, and outputs a subtracted result as a first difference element. A second synthesizer(32) of an audio receiving unit(30) synthesizes the first synthesizing element received through a first signal line(40) from the first synthesizer and the first difference element received through a second signal line(42) from the first subtracter, and outputs a synthesized result(2L) as a second synthesizing element. A second subtracter(34) of the audio receiving unit subtracts the first element, received through the second signal line from the first subtracter, from the first synthesizing element received through the first signal line from the first synthesizer, and outputs a subtracted result(2R) as a second difference element.
Patent KR-20010085334-A (KR)
Title: Method and apparatus for providing a scalable pervasive notification service
Inventor: GUERNEY DOUGLASS HOLLOWAY-HUNT
IPC: G06F13/00
Filed: 2001-02-06
Abstract: PURPOSE: A notification service and method for a transmitting message is provided to support a cut-off device related with the objective receiver of a message. CONSTITUTION: The information system includes an information service(1000) for transmitting messages to at least one objective receiver, related with the user or the subscriber of the information service. Each gateway(1090) is connected to at least one receiving-side device related with the user or subscriber of the information service(1000) directly or via an exchange. The gateway preferably includes a message queue for storing a distributed message and a transcoder(1040) for transforming the format type of the message received from the information server to a different format type suited to an objective receiving-side device.
Patent KR-20020065298-A (KR)
Title: Message Transference System Useful Mobile Hadset
Inventor: SEO YOUNG SEOK
IPC: H04W4/12
Filed: 2001-02-06
Abstract: PURPOSE: A system for transmitting messages using a mobile terminal is provided to store, manage, analyze and evaluate data through a database server if a user inputs user information through a terminal system on the web and to transmit a message to the user's mobile terminal if a scheduled date comes. CONSTITUTION: A system for transmitting messages on the Internet consists of a terminal system(10) and a server system(20). The terminal system(10) to access the Internet is composed of an interface(11), an Internet protocol(14), and a browser(15). The interface(11) controls input/output devices. The Internet protocol(14) is a standardized communication rule to use Internet service in the case of transmitting data or sending a message through a network(13) by the operation of an operating system(12). The browser(15) is provided for Internet access. The server system(20) to transfer messages is composed of a message transmission system(21), a message server(24), a web server(22), and a database(23). The message transmission system(21) is a solution to transmit messages. The web server(22) is for Internet service. The database(23) stores and analyzes necessary data.
Patent KR-20020068230-A (KR)
Inventor: KIM BUM KI
IPC: C12G3/04
Filed: 2001-02-20
Abstract: PURPOSE: Provided is ginseng refined alcohol containing pure gold fragments, which has short fermentation and improves hanover and headache. CONSTITUTION: The ginseng refined alcohol containing pure gold fragments is manufactured by adding 99.9% of pure gold having 1-2/10000mm of thickness and a size of 5mmx5 mm to ginseng refined alcohol(12-17%) containing 1-5 of raw ginsengs in a weight ratio of gold fragment to ginseng refined alcohol being 0.05 or less to 100, and by diluting them with 20mL-40mL of an arrowroot juice(100%).
Patent KR-20020068836-A (KR)
Title: Method for imforming telephone numbner using short message service
Inventor: LIM JONG GEUN
Filed: 2001-02-23
Abstract: PURPOSE: A phone number guidance method is provided to transmit a phone number, requested via a 114 phone number help system, to a user by using an SMS(Short Message Service), to enable the user to edit and store the transmitted message, and to make an auto-dialing to the transmitted phone number. CONSTITUTION: The method comprises steps of a user accessing a help station via a PSTN over a general phone or a mobile phone, the user waiting for a help service, the user being connected to a helper of the help station, then the user making inquiry about a wanted phone number, the helper searching for the inquired phone number in a database, the helper notifying the user of no service message if there does not exist the phone number, the helper converting the wanted phone number into a voice via an automatic guidance system, and repeating it twice, the help station asking the user if the phone number is transmitted in a short message type, the help station transmitting the short message including the wanted phone number to the user if the user wants to receive the short message, and then the help station stopping the service.
Patent KR-20020068940-A (KR)
Title: a method for manufacturing a shadow mask by ion nitriding for use in OELD
Inventor: JU SEONG HU
IPC: H05B33/10
Filed: 2001-02-23
Abstract: PURPOSE: A method for manufacturing shadow mask for organic electroluminescence device is provided to increase yield rate by improving thermal resistance and adhesive property between the mask and substrate, while lengthening useful life of the shadow mask and reducing manufacturing cost. CONSTITUTION: A method comprises a first step(S100) of producing a shadow mask from a stainless steel material; a second step(S200) of forming a reaction furnace to have a vacuum state; a third step(S300) of maintaining an ion nitriding atmosphere by injecting nitriding mixture gas into the reaction furnace and generating a plasma by applying a pulse type power to the shadow mask; a fourth step(S400) of performing ion nitriding all over the shadow mask so as to increase hardness and toughness; and a fifth step(S500) of forming a surface hardening alloy coating layer made of a composite material, to the surface of the shadow mask under the ion nitriding atmosphere.
Patent KR-20020069598-A (KR)
Title: Apparatus for removing of burr
Inventor: JANG SE HWAN
IPC: B29C37/02
Filed: 2001-02-27
Abstract: PURPOSE: A burr removing apparatus is provided to enhance a work speed and a yield by supplying a heat to a cutter and removing the burr using a mechanical force and heat energy simultaneously when the burr of relatively soft injection molding products is removed. CONSTITUTION: A burr removing apparatus comprises a body, a table for clamping a workpiece(W), an X axis assembly for moving left and right, a Y axis assembly for moving back and forth, and a Z axis assembly for moving up and down. A rotating shaft(6) for controlling rotatively is protruded and placed at the Z axis assembly, and a blade(10) is mounted onto the rotating shaft. The burr removing apparatus further comprises a blade, a blade block(20) for supporting detachably the blade, a heater(50) for heating the blade block, a temperature sensor(60) for sensing the blade block, a clamp(30) for fixing the blade block at the rotating shaft, and insulating member for blocking transferring of the heat into the clamp side.
Patent KR-20020070586-A (KR)
Inventor: KIM GI BEOM
IPC: H01M2/04
Filed: 2001-03-02
Abstract: PURPOSE: Provided is a secondary battery which has a protective film on top of cap, and thus prevent the rust generation in battery and water leakage of electrolyte, as well as shows simplified manufacturing process and reduced cost. CONSTITUTION: The lithium secondary battery comprises an electrode assembly having anode plate(333) and cathode plate(331) on both sides of separator(332); a case(310), into which the electrode assembly is inserted; a cap assembly(322) which is positioned at upper opening of the case and seals inside of the case; and a protective film(340) formed on top of the cap assembly. The protective film(340) is composed of insulating material curable by ultraviolet. The end of the case and edge of the cap assembly are welded with together.
Patent KR-20020070622-A (KR)
Title: Structure of plasma display and fabricating method thereof
Inventor: CHO YEONG JAE
IPC: H01J11/42
Filed: 2001-03-02
Abstract: PURPOSE: A structure of plasma display device and a method of manufacturing the same are provided to emit light by exciting phosphor material of a plasma display panel device through the UV rays generated from an EL. CONSTITUTION: A lighting layer(44) is formed between a lower electrode(42) and an upper electrode(46) on a substrate(41) and generates the ultraviolet rays by applying voltage. A lower dielectric layers(43) and an upper dielectric layer(45) are formed between the lower electrode and the lighting layer and between the lighting layer and the upper electrode(46). A phosphor(47) is formed on the upper electrode and is excited by the UV rays generated from the lighting layer so as to generate a visible ray.
Patent KR-20010044515-A (KR)
Inventor: LIM CHAN UNG
IPC: G06F17/00
Filed: 2001-03-02
Abstract: PURPOSE: A system and method for estimating statistics of a web site access are provided to minutely produce statistics of the web site access ratio according to each web site. CONSTITUTION: A web site access statistics estimating system comprises a user computer(100), a web server of an internet service provider(200), and a central authentication center(300). The user computer(100) is equipped with a web browser for connecting the internet(1). The web server(200) provides all sorts of service information to the internet user. The central authentication center(300) senses that the internet user connects to a web site operated through the web server(200), and produces statistics of user access into the web sites. The central authentication center(300) generates an access authentication code by web pages and transmits the code to the web server(200).
Patent KR-20020072673-A (KR)
Title: Method for preparing a thick coating of PZT using sol-gel process
Inventor: KIM CHANG JEONG
IPC: H01L41/318
Filed: 2001-03-12
Abstract: PURPOSE: Provided is a preparation method of high density lead zirconate titanate(PZT) thick films which are excellent stability, crystallinity and electrical properties by sol gel process. Accordingly, the method enables formation of thick films with no cracks and thickness of 500nm in one time. CONSTITUTION: The preparation method of PZT(PbZrxTi1-x, 0<x<1) thick films is as follows: (i) dissolving Pb-precursor such as PbO or PB(OAc)2.3H2O into a mixed solvent of acid such as diol-solvent or acetic acid and diol such as 1,3(1,2)-propanediol or 1,3(1,4)-butanediol; (ii) dissolving each Zr-precursor such as Zr(n-OPr)4 or Zr(n-OBt)4, where n-OPr and n-OBt are 1-propyl and 1-butyl group, respectively, and Ti-precursor such as Ti(i-OPr)4 or Ti(i-OBt)4, respectively into the same mixed solvent as above, wherein i-OPr and i-OBt are isopropyl and isobutyl group; (iii) mixing solutions prepared from step (i) and (ii) for PZT stock solution(0.1-2M); spin-coating PZT solution on a substrate; (iv) thermal treating one time or more, comprising the steps of baking at 350-400deg.C in air, preannealing at 550- 650deg.C in air, and annealing at 650-700deg.C in air. The above single precursor solution is made at 25-350deg.C in an inert gas(N2 or Ar) atmosphere.
Patent KR-20020072695-A (KR)
Title: Advertising Device and Advertisi ng Method for Using the Same
Inventor: WON YOUNG HO
IPC: G09F23/02
Filed: 2001-03-12
Abstract: PURPOSE: Provided are an advertisement device mounted in a case of one's favorite products, such as a cigarette case and a biscuit case, and an advertising method using the advertisement device. CONSTITUTION: The advertisement device contains: the case(50) comprising a cover(52) and a main body(54); a circuit substrate(10) mounted in the main body or the cover and packaging a memory chip in which advertisement contents are stored; a power part(20) connected to the memory chip; a switch comprising connection terminals(42)(44) mounted on the cover(52) and the main body(54) each, which generates a signal to supply power to the memory chip when the connection terminals(42)(44) come apart; an amplifier connected to the memory chip; a speaker(30) connected to the amplifier and outputting the advertisement contents into sound. And the advertising method contains the steps of: receiving an order of the advertisement; storing the advertisement in the memory chip and mounting the advertisement device in the case(50); and transmitting the advertisement contents whenever users open the case(50).