baber/WOPTO huggingface dataset:
Patent KR-20020044233-A (KR)
Inventor: JANG SEUNG HYEON
IPC: B22D11/00
Filed: 2000-12-05
Abstract: PURPOSE: A mold flux used in the manufacture of electromagnetic steel sheets is provided to prevent break-out in continuous casting. CONSTITUTION: In a mold flux used for continuous casting manufacturing electromagnetic steel sheets comprising C 0.01-0.06 wt.%, Si 3.0-3.3 wt.%, the mold flux comprises MgO 5 wt.% or less, Na2O 13-16 wt.%. F 5-9 wt.%, free£C|: 1-5 wt.%, and other inevitable impurities where the mold flux has a viscosity of 1.0 to 1.3, a crystalline portion of less than 2%, and a basicity(CaO/SiO2) of 0.85-0.95.
Patent KR-20020044692-A (KR)
Title: A real time art lecture system using internet and method for employing thereof
Inventor: LEE SEUNG WOO
Filed: 2000-12-06
Abstract: PURPOSE: A fine arts lecture system using the Internet and an operation method are provided to make a user attend to a free lecture successively by viewing an advertisement and to make an evaluation group evaluate the works of a trainee. CONSTITUTION: The system comprises a trainee terminal having a standard web protocol, a lecture browser capable of processing the video and text data and a transceiver capable of transceiving the data through the Internet, and a server. The server includes a communication module transceiving the data with the trainee terminal through the Internet, an input/output data management module(512), a distributed processing management module(514) connecting to a call by performing the distributed management of the registered trainee, an electronic payment management module(516) executing an electronic payment with a bank and a credit card company, and a lecture file management module(518). The lecture file management module successively and selectively executes the advertisement and lecture data according to the selection of the free and charged lecture, and successively transmits the next lecture data based on the updated data.
Patent KR-20020044929-A (KR)
Title: A camber controlling suspension
Inventor: WOO SEUNG HUN
IPC: B60G3/26
Filed: 2000-12-07
Abstract: PURPOSE: A suspension for camber control is provided to make up ground connect state of a stable tire in bump and rebound of a car during straight driving as forming most suitable suspension geometry in the state of straight or turning driving, and to form strong cornering force as forming ground connect force of a tire in turning driving. CONSTITUTION: A suspension for camber control is comprised of two roll sensing links(3L, 3R) connected to the front of rotary center of a wheel in a knuckle of right side(1R) and to the rear of rotary center of a wheel in a knuckle of left side(1L) in right and left wheels, and forming 'L' form as bending in the location cross with a perpendicular line passed through the rotary center of the wheel(C); a bracket for supporting rotation supporting in a frame of a car to guide the rotation of two roll sensing links; a differential gear unit(7) appointing a bevel gear installed in the unit part of the two roll sensing links for side gears of both sides; a worm gear formed in a differential gear case of the differential gear unit; a camber control rack(13) formed a gear matching with the worm gear and performing linear motion as installing parallel with a car axis; camber control links(15L, 15R) connecting both units of the camber control lack to knuckles of both wheels; a rolling control suspension consisted of lower links(17L, 17R) supporting the lower side of rotary center of wheel in the knuckle to the frame. Ground connect state to the ground surface of a tire becomes the most suitable state and stable driving is possible because of the action of the camber control rack and the camber control link.
Patent KR-20010069260-A (KR)
Title: glass manufacturing method for decoration
Inventor: LEE SANG CHEOL
IPC: C03C25/68
Filed: 2000-12-08
Abstract: PURPOSE: Disclosed is a method for processing glass plate for decoration to natural dry without ultraviolet rays drier by using ink mixture to dilute UV(Ultra Violet) particle or ceramic particle in ink or paints, to improve durability not to detach glass plate easily by strengthening adhesive power despite of outer condition. CONSTITUTION: The method for processing glass plate for decoration comprises washing and drying process to wash foreign matter of glass with water and to dry water completely; mixing process of printing solution to make printing solution by mixing UV particle with ink or paints with constant ratio; printing and drying process to print fixed letter or figure on glass surface with screen of 80-150mesh using ink mixture and to natural-dry glass surface for 4-8hours or dry glass surface for 25 minutes at the temperature of 80deg.C using ventilator or hot-air device; mirror removing process to remove mirror of processed glass plate passed by printing and drying process using aluminum vacuum deposit method or silver nitrate glass deposit method.
Patent KR-20020049219-A (KR)
Title: Fuel gauge system for lpg vehicle
Inventor: SEO HUI SUK
IPC: G01F23/00
Filed: 2000-12-19
Abstract: PURPOSE: A fuel gauging apparatus is provided to achieve an in-advance prevention against distortion of bombe case and leakage of LPG by alarming over charge of LPG fuel in the LPG bombe. CONSTITUTION: A fuel gauging apparatus comprises an over charge signal generating unit(17) interposed between an indicator shaft(13) interconnecting a permanent magnet(11) and an indicator(15), and which outputs an over charge signal by using a current signal transmitted from a float gauge, when an LPG bombe is over charged with an LPG fuel; and an alarm unit(19) arranged at one side of a board(3), and which receives the over charge signal from the over charge signal generating unit and alarms over charge of the LPG fuel in the LPG bombe. The over charge signal generating unit includes a contact bar(21) fixed to the indicator shaft so as to rotate together with the indicator shaft; and two terminals(23,25) arranged at the upper portion of a housing(7) and interconnected through the contact bar. The alarm unit includes a case(33) mounted to the board through a mounting hole(31); and an alarm lamp(35) installed within the case, and which is electrically connected to the over charge signal generating unit.
Patent KR-20020050046-A (KR)
Title: Reuse system of PCB's scrap by brushing
Inventor: PARK JONG SOON
IPC: B09B3/00
Filed: 2000-12-20
Abstract: PURPOSE: Provided is a reuse system of printed circuit board scrap by grinding which can recover pewter and copper by grinding and makes it possible to separate IC chips and reusable parts from waste materials without damage to circuit board and can recover gold and silver by sorting valuable metals and can reuse resin that is one of the main ingredients of printed circuit board. CONSTITUTION: The system comprises a grinding roller which has moderate hardness for grinding just pewter and copper without damage to other parts; a guide roller which helps to maintain suitable pressure in the transfer process of wasted circuit board scraps; a dust collector which collects minute dust discharged by grinding. Dust of metals and resins can be separated by sorting of specific gravity and the metals is concentrated by metal concentrator.
Patent KR-20020053193-A (KR)
Inventor: JUNG IN CHEOL
IPC: G11C7/10
Filed: 2000-12-27
Abstract: PURPOSE: A data output circuit of a semiconductor memory and a method thereof are provided, which prevents a fail between data and has a wide operation frequency band. CONSTITUTION: According to the data output circuit of a semiconductor memory comprising a rising data latch latching rising data inputted by being synchronized to a clock and a falling data latch latching falling data inputted by being synchronized to the clock, a rising data strobe switch(100) synchronizes the rising data applied from the rising data latch to a rising edge of the clock by a rising data strobe signal and then outputs it to an output node. A delay unit delays the falling data applied from the falling data latch by the above rising data strobe signal for a fixed time. And the first falling data strobe switch(110) synchronizes the falling data applied from the delay unit to a falling edge of the clock by a falling data strobe signal and then outputs it to the above output node.
Patent KR-20010082611-A (KR)
Title: Thermally-assisted magnetic recording method and thermally-assisted magnetic recorder
Inventor: AKIYAMA JUNICHI
IPC: G11B13/04
Filed: 2000-12-28
Abstract: PURPOSE: To provide a heat assisted magnetic recording method and heat assisted magnetic recorder which can most adequately adjust the timing of heating of a medium and magnetic recording, have a small size, lightweightness and high reliability and can exceedingly improve recording density in heat assisted magnetic recording for recording magnetic information by heating the medium to side the temp. by a heat source, such as a light beam. CONSTITUTION: This heat assisted magnetic recording method makes the magnetic information recordable by heating the recording medium to rise the temp. and to lower the coercive force of the recording part and impressing the recording magnetic field from recording magnetic poles to the recording part having the lowered coercive force. The magnetization fixing point where the coercive force of the recording part equals to the magnitude of the recording magnetic field is disposed nearer a leading side than the trailing edge of the recording magnetic pole.
Patent KR-20010074033-A (KR)
Title: A flower fixing pole which makes use of charcoal and the manufacturing method
Inventor: KIM JONG SEON
IPC: A47G7/02
Filed: 2000-12-30
Abstract: PURPOSE: A flower fixture is provided to keep a flower fresh and prevent a bad smell by using charcoal having sterilizing and deodorizing functions and containing rich mineral components. CONSTITUTION: A flower fixture(10) is constituted of charcoal made from bamboo or oak, and has a flower fixing hole(11) in a central portion thereof. The flower fixing hole(11) is reduced in diameter in the lower portion to fix a flower stalk(14). A pin hole is made in the side of the flower fixture to communicate with the fixing hole(11). When the flower stalk(14) has the diameter as the same as or smaller than the flower fixing hole(11), a fixing pin(13) is inserted into the pin hole to reduce the diameter of the flower fixing hole(11). The flower stalk(14) is pressed against one side of the inner wall of the flower fixing hole(11) to be engaged between the fixing pin(13) and the inner wall of the flower fixing hole(11).
Patent KR-20010022808-A (KR)
Title: 내연기관용 가스 셔틀밸브의 제어 장치
IPC: F01L9/10
Filed: 1999-02-16
Abstract: 본발명은 내연기관의 가스 셔틀밸브의 제어 장치에 관한 것으로, 하우징에 고정된 밸브시트(8)와 협동하는 밀폐면(7)을 가지며, 축방향으로 이동가능한 밸브부재(5)를 포함하며, 연소실로부터 떨어진 밸브부재(5)의 단부상에 피스톤(9)을 가지며, 상기 피스톤에의해 두개의 유압 작업공간이 축방향으로 분리되며, 연소실에 가까운 하부 작업영역(11)은 밸브부재(5)를 폐쇄방향으로 작용하며, 연소실에서 떨어진 상부 작업영역(15)은 밸브부재(5)를 개방하는 방향으로 작용하며, 이와동시에 하부 작업 영역(11)은 고압원(19)과 상시 연결되고 상부 작업영역(15)은 전기 제어밸브(27)를 포함하는 토출관(33)과 전기 제어밸브(27)를 포함하는 고압 공급관(23)의 수단에의해 토출되어 고압이 선택적으로 채워질수 있다.  전기 제어밸브(35)는 전류가 제로일때 상부 작업영역(15) 내부로 고압 공급관(23)을 폐쇄하는 반면, 토출관(33)내의 제어밸브(35)는 전류가 제로일때 개방된다.
Patent KR-20010052108-A (KR)
Title: 클램프 펄스 생성기의 제어
IPC: H04N5/18
Filed: 1998-12-07
Abstract: 클램프 펄스 생성기 시스템은 제어 신호에 응답하고 출력 펄스 신호를 생성하기 위해 수평 율 펄스 신호와 편향 유도 블랭킹 펄스 신호를 수신하고 상기 출력 펄스 신호들을 선택하는 실렉터(100)로 구성되어있다. 클램프 펄스 생성기(400)는 출력 펄스 신호를 수신하고 미리 설정된 지속시간(duration)을 갖는 출력 펄스 신호에 응답하는 클램프 펄스를 생성하기 위해 접속된다. 검출기(250)는 수평 율 신호의 존재에 응답하는 제 1 상태와 수평 율 펄스 신호의 부재에 응답하는 제 2 상태를 갖는 제어 신호를 생성하기 위한 수평 율 펄스 신호를 수신하기 위해 접속된다. 상기 제어 신호의 제 1 상태는 수평 율 펄스 신호(BLK)를 수신하기 위해 실렉터를 스위칭하고 상기 제어 신호의 제 2 상태는 편향 유도 블랭킹 펄스 신호를 수신하기 위해 실렉터를 스위칭 한다.
Patent KR-20010033623-A (KR)
Title: 타이밍 종결 방법
IPC: G06F17/50
Filed: 1998-12-22
Abstract: 각각 관련된 면적을 가지며, 셀 라이브러리로부터 선택된 셀에 기초하여 및 전자회로 작도에 기초하여 컴퓨터를 사용하여 집적회로 레이아웃을 설계하는 자동화 방법은, a)셀이 와이어에 의해 함께 결합되어 관련된 소정의 지연 제한을 갖는 회로 경로를 형성하도록 집적회로 레이아웃 내에 각각의 셀을 배치하는 단계, 여기서 상기 셀은 컴퓨터에 입력된 전자회로작도에 기초하여 함꼐 결합되고; b)회로 경로를 형성하기 위하여 셀을 와이어로 함께 접속시키는 단계;c)회로 경로아 관련된 소정 지연 제한을 만족시키도록 셀 중 적어도 하나의 영역을 조정하는 단계를 포함하여 이루어진다.
Patent KR-20010024819-A (KR)
Title: 연마용 워크피스 홀더 및 그 제조방법, 워크피스의연마방법 및 연마장치
IPC: H01L21/683
Filed: 1999-10-22
Abstract: 진공흡착에 의해 워크피스를 보지하는 연마용 워크피스 홀더의 홀더 바디 물질, 및 상기 홀더 표면을 보지하는 워크피스 코팅용 수지피막의 물질을 개선하고, 그리고 수지로 표면코팅하는 방법을 개량하여 수지로 표면을 코팅하는 공정동안 홀더 바디의 홀이 수지로 막히는 문제가 발생하지 않도록 함으로써, 매우 정밀한 워크피스 홀딩면을 갖는 연마용 워크피스 홀더 및 그 제조방법이 제공된다. 본 발명에 의하면, 진공흡착에 의해 워크피스를 보지하기 위한 다수의 관통홀이 제공된 워크피스 홀더를 갖는 연마용 워크피스 홀더를 제공하고, 상기 홀더바디의 홀딩면은 그 위에 열경화성 수지를 적용하고 가열에 의해 그것을 경화하여 형성된 코팅막으로 코팅되고, 그 코팅막 표면은 연마된다.
Patent KR-20010034491-A (KR)
IPC: A61B17/70
Filed: 1999-01-27
Abstract: The invention concerns an interspinous stabilizer comprising two members anchoring it to spinous processes of two respective vertebrae, and a body extending along a direction aligning the members, the body, being compressible along the alignment direction by the effect of stress based on a predetermined configuration, the body being adapted to recover spontaneously said predetermined configuration after the stress has ceased, the body comprising a leaf spring with a geometrical generatrix. The anchoring members are capable of fixing the stabilizer to the spinous processes such that the generatrix extends substantially from the front to the rear relative to the patient's body.
Patent KR-20010040999-A (KR)
Title: 디지털 반도체 회로를 테스트하기 위한 회로 및 방법
IPC: G11C29/38
Filed: 1998-09-30
Abstract: 본 발명은 동일한 반도체 칩 상에 형성된 디지털 반도체 회로를 체크하기 위해 사용되고 다음의 요소들: 체크될 다수의 소자들; 체크 데이터 모델을 중간에 저장하기 위한 체크 데이터 모델 레지스터; 체크 데이터로부터의 데이터를 체크될 소자들에 기록하고 이 소자들로부터 이 데이터를 판독하기 위한 판독 및 기록 회로; 및 체크될 소자의 기록 및 판독 데이터 사이에 차가 발생하는지 아닌지를 결정하기 위한 비교 회로(6)로 구성된 단일 칩 집적 테스트 회로에 관한 것이다.  테스트 회로는 동작 신호(3)에 의해 동작될 수 있고 체크될 소자들에 데이터를 기록하기 전에 체크 데이터 모델 레지스터로부터 체크 데이터 모델을 변형하는 모델 변형 회로(2)로 구성된다.
Patent KR-20010043159-A (KR)
Title: 엠보싱 처리된 표면을 갖고 있는 잉크젯 인쇄용 수용체시이트
IPC: B41M5/00
Filed: 1999-04-13
Abstract: 본 발명은 시이트의 한 주표면으로서 엠보싱 처리된 이미징 표면을 갖고 있는 시이트를 함유하는 수용체 매체에 관한 것이다. 상기 수용체 매체는 잉크, 접착제, 생물학적 유체, 화학적 평가 분석 시약, 미립자 분산액, 왁스 및 이들의 배합물을 포함하는 분사 가능한 물질을 수용할 수 있다. 상기 수용체 매체는 의외로 잉크젯 인쇄  시스템에 있어서 페더링, 밴딩 및 머드크래킹과 같은 통상의 잉크젯 인쇄 문제점을, 잉크젯 액적을 잉크젯 수용체 매체 상에 접촉 및 건조시키는 방법을 제어함으로써 해결할 수 있다. 착색 잉크젯 이미지 그래픽의 인접하는 칼라 사이의 경계선의 선명한 라인을 얻을 수 있다. 또한, 본 발명은 잉크젯 수용체 매체를 제조하는 방법 및 이용하는 방법도 개시하고 있다.
Patent KR-20010052637-A (KR)
IPC: A61P25/22
Filed: 1999-06-04
Abstract: Hyperforin derivatives of formula I <CHEM> <??>wherein R is an acyl or a glicoside group, have advantageous pharmacological characteristics and good stability, and are used for the preparation of an antidepressive medicament.
Patent KR-20010052896-A (KR)
Title: 음극선관의 블랙 매트릭스 제조 방법
IPC: H01J9/227
Filed: 1999-06-02
Abstract: 개공들을 가진 광 흡수 매트릭스(23)는 음극선관(10)의 면판패널(12)의 내부 표면상에 광수신기(72)를 설치하고, 상기 광수신기를 실질적으로 일정한 충전 레벨로 정전기적으로 충전하며, 광수신기의 더적게 조명된 부분을 실질적으로 방전하지 않고 더 강하게 조명된 부분을 선별적으로 방전하도록 색 선택 전극(24) 안의 개공들(33)을 통해 상기 광수신기를 빛에 노출시킴으로써 상기 음극선관(10)의 면판패널의 내부 표면(12)상에 형성된다. 광수신기는 광 저항층(56)과 도전성층(62)및 광전도성층(66)을 포함한 다수의 층으로 구성된다. 색 선택 전극안의 개공들은 광 흡수 매트릭스(23) 안에 있는 개공들의 치수보다 실질적으로 더 큰 치수를 가진다. 광수신기는 광수신기의 더 적게 조명된 부분위에 토너선(84)을 형성하는 대전된 색소 입자들을 가진 액체 토너와 접촉한다. 광수신기는 광 저항층의 용해도를 더 큰 용해도 영역과 더 작은 용해도 영역으로 선택적으로 변환시키기 위해 자외선에 노출된다. 광수신기는 패널의 내부 표면 부분들을 노출시키기 위해 순차적으로 현상되고, 용해도가 적은 영역은 본래의 상태로 유지된다. 그 다음에, 패널의 내부 표면과 용해도가 더 작은 영역들은 매트릭스 현탁액으로 코팅되고, 상기 코팅액은 건조되어 매트릭스를 형성한다. 용해도가 약한 영역과 그 위의 광 흡수 매트릭스 물질은 제거되고 그로인해 색 선택 전극안에 개공들의 폭 보다 더 작은 폭을 가진 다수의 개공들이 매트릭스내에 형성된다.
Patent KR-20020057668-A (KR)
Title: flow controller of distributing sewage
Inventor: LEE GWON JAE
IPC: E03F5/10
Filed: 2001-01-03
Abstract: PURPOSE: A sewage flow control system is provided, which maximizes the treatment efficiency of sewage by removing overload or lacking-load and is provided with automation system by connecting sewage flow control with flowmeter of treatment plant. CONSTITUTION: In case of normal manholes with merging passage of sewage between multi-sewer inlet pipes(S1,S2,Sn) and outlet(28,30) connected with grit chamber, the sewage flow control system comprises door vertically located in the channel section, axially supporting lower side by hinge(20), and formed bracket(6) with a long hole(4) on the upper surface, horizontally located screw rod(10) that is able to revolve around inner wall of above manhole, slider(12) with arm(14) connected with above bracket(6) by pin(16) slid along the long hole(4) of bracket(6).
Patent KR-20020061905-A (KR)
Title: Digital power amplifier
Inventor: KIM CHAN
IPC: H03F3/00
Filed: 2001-01-18
Abstract: PURPOSE: A digital amplifier is provided to prevent a power MOS transistor decreasing its efficiency with reducing the load applied thereto by applying a digital signal thereto, to reduce a radiation plate in size by preventing the power MOS transistor from consuming its power from heat by increasing its efficiency and to reduce a volume and a noise of the amplifier because a cooling fan dose not need to be installed into the amplifier. CONSTITUTION: A digital amplifier includes an amplifier(10) for amplifying an analog signal, an oscillator for generating a signal having a predetermined frequency, a comparator(30) for converting a square wave into a digital signal, a switch(50) for switching by using the square wave, a controller(40) for controlling the switch(50), a filter(60) for converting a digital signal transmitted through the switch(50) into an analog signal and a negative feedback circuit(70) for reducing the error by processing a negative feedback for the output signal from the filter(60). The square wave is obtained by comparing the amplified analog signal and a signal with a preset frequency inputted to the comparator(30). The digital amplifier is capable of further including a protection circuit(80) for protecting the circuits.
Patent KR-20010067612-A (KR)
Title: Method and system for virtual reality based on internet tele-lecturing
Inventor: BYUN JIN U
Filed: 2001-02-21
Abstract: PURPOSE: An Internet remote lecture system based on a vertical reality and a method thereof are provided for a lecturer to offer a streaming of video lecture data for multi-casting audio/video data having a high compression rate based on an MPEP-4 one by one and a navigation through an avatar in a cyber lecture room to a plurality of learners located in remote places through a multi cast network. CONSTITUTION: An LOD(lecture on demand) server(11) has a conference manager and a session manager for performing one-way 1:N group communication and comprises a media server playing a role of an audio/video streaming server, a lecture managing DB and a chatting server module. In addition, the LOD server(11) stores VR/MPEG/Presentation for an Internet lecture. A lecturer client(22) registers and stores moving picture/audio data, word processor as the MS-word and a teaching material as a HTML web document in the LOD server(11) for a cyber lecture through a web camera/speaker and may check a lecturing process. A learner client(33) takes an Internet remote lecture by receiving a channel searching browser function for searching a multi cast channel wanted by a user, a VRML media browsing, a MPEP-4 media browsing, a lecture presentation browsing, an avatar and an automation function capable of performing an animation supplying a voice and a sound, and lecture data as a VR/MPEG/Presentation from the LOD server(11) by providing a synchronization between multi media.
Patent KR-20010087212-A (KR)
Title: Communication network system, gateway, data communication method and program providing medium
Inventor: FUTAGAMI MOTOMASA
IPC: H04L12/28
Filed: 2001-02-27
Abstract: PURPOSE: A communication system is provided to realize an enhanced communication network by adding routing information provision and authentication processing functions to a gateway. CONSTITUTION: Routing information provision and authentication processing functions are added to a gateway that converts protocols between two different communications networks. When an access request comes from a public communications network such as the Internet to a terminal in a local(private) communications network to which the gateway is connected, the gateway executes the authentication of the request terminal to prevent illegal write/read of data and provides an active terminal list consisting of accessible terminal information or a user status table to the access request user whose authentication is successfully completed so that an access request user can easily detect a desired access destination.
Patent KR-20020069952-A (KR)
Title: Method for downloading and replaying data of mobile communication terminal
Inventor: HAN MI GYEONG
IPC: H04B1/40
Filed: 2001-02-28
Abstract: PURPOSE: A method for displaying progress time in downloading or regenerating data in a mobile terminal is provided to display the total regeneration or download time of data, regeneration time for remaining data, the amount of data to be downloaded, etc., in a mobile terminal that can regenerate multimedia data or download data. CONSTITUTION: If a user's operation for regeneration or downloading is generated, a control part checks whether it is the downloading of data or the regeneration of multimedia data(203). In case that the user's operation is the downloading of data, the control part reads the size information of the data to download(207). The control part calculates a total download time(T) using the size and bit rate of the data(209). The control part displays the total download time(T) as a progress bar(213). If downloading is started, the control part counts the time of downloading the data(215) and fills the progress bar with color as much as the counted time(217).
Patent KR-20020072654-A (KR)
Title: Method of forming a metal gate
Inventor: CHO JUN GYU
IPC: H01L29/78
Filed: 2001-03-12
Abstract: PURPOSE: A method for forming a metal gate is provided to prevent whisker capable of causing electric short between adjacent gates after a selective oxidation process is performed for preventing abnormal oxidation of the metal gate. CONSTITUTION: A gate insulating layer and several gate material layers having a metal layer are conventionally formed on a semiconductor substrate and then etched to form a gate pattern(200). Next, the selective oxidation process is performed to selectively form a silicon oxide layer(120a) and minimize the oxidation of the metal layer. Here, due to an incomplete selective oxidation, a thin metal oxide layer(20b) is also formed on sidewalls of the metal layer. After the selective oxidation process, a heat treatment process is performed by using a gas containing hydrogen atoms to prevent whisker from occurring on the metal oxide layer(20b). The heat treatment process suppresses the surface mobility of the metal oxide layer and the nucleation of the whisker.
Patent KR-20010100851-A (KR)
Title: 폴리티올, 중합성 조성물, 수지 및 렌즈, 그리고,티올화합물의 제조방법
IPC: C08G18/77
Filed: 2001-03-27
Abstract: 본 발명에서는, 하기 일반식(1): 
     R-(SCH 2 SH) n (1) 
     (식중, R은 방향족기를 제외한 유기잔기이고, n은 1이상의 정수임)로 표시되는, 분자내에 2개이상의 메르캅토기를 지닌 1종이상의 폴리티올화합물 및 메르캅토기와 반응가능한 작용기를 분자내에 지닌 1종이상의 화합물을 함유해서 이루어진 고굴절률렌즈용 중합성 조성물; 상기 조성물을 중합시켜서 얻어진 수지; 상기 수지로 이루어진 광학소자 및 렌즈; 그리고, 하기 일반식(2): 
     HS-R 1 (-S-R 2 ) m (2) 
     (식중, m은 1이상의 정수이고; R 1 은 방향족 유기잔기, 지방족 유기잔기, 지환식 유기잔기 혹은 헤테로고리식 유기잔기, 또는 사슬중에 방향고리 혹은 황원자를 지닌 지방족 유기잔기, 지환식 유기잔기 혹은 헤테로고리식 유기잔기이고; R 2 는 보호기임)로 표시되는 화합물과, 메르캅토기와 반응가능한 작용기를 지닌 화합물을 반응시킨 후, -S-R 2 를 -SH로 변환시키는 공정을 구비한 티올화합물의 제조방법이 제공된다.