baber/WOPTO huggingface dataset:
Patent KR-20000010601-A (KR)
Title: Method for the production of bristle goods
Inventor: WEIHRAUCH GEORG
IPC: A46D3/04
Filed: 1997-04-17
Abstract: PURPOSE: Is provided a process for producing bristle goods which has a surface consisting of individual and vertical plastic bristle towards bristle carrier plate. CONSTITUTION: An individual and vertical bristle having end part of binding in front of bristle carrier containing handle(1), (2) and bed(3) is inserted into an each hole in punched plate(7) which has a bigger diameter than single bristle and is arranged to a surface or a part of surface in order to project out of hole in opposite site. The bristle is axially or radially fixed to punched plate so as not to move, is soaked and hardened in a bed flowing with liquid hardening agent above the end part of binding in bristle carrier plate.
Patent KR-20000015795-A (KR)
Title: Apparatus and method for crushing sugar cane
Inventor: HATT RAYMOND JOHN
IPC: C13B10/06
Filed: 1997-05-09
Abstract: PURPOSE: An apparatus and a method for crushing sugar cane are provided to improve the level of juice extraction from the cane or bagasse with less power consumption and with a much simpler design. CONSTITUTION: The apparatus comprises a pair of counter rotating rolls between which the cane is crushed, at least one of the rolls having a peripheral juice channel extending about the roll and into which sugar juice can flow, the channel being configured such that a sealing plug of bagasse can form in an upper portion of the channel with a lower portion of the channel left free for holding the juice, bagasse plug removing means to remove the plug of bagasse to allow the juice to drain from the channel at a position where the juice does not contact the crushed cane blanket. The method comprises the steps of crushing the cane between a pair of spaced apart counter rotating rollers; the cane moving in a vertical direction as it passes between the rollers and is crushed; passing the extracted juice into a juice channel on at least one of the rollers; sealing the channel opening with a layer of compacted bagasse in the crushing zone of the rollers; rotating the roller to move the sealed channel away from the crushing zone and into a juice collecting zone; and removing the bagasse to drain the channel.
Patent KR-20000016591-A (KR)
Title: Synthesis of haloalkynol
Inventor: KUO DAVID L
IPC: C07C29/62
Filed: 1997-06-10
Abstract: PURPOSE: A manufacturing process for an iodopropynyl alcohol is provided for halogenating an alkynol including 3 ¯ 20 carbon atoms. CONSTITUTION: The present invention relates to process for halogenating an alkynol having 3 to 20 carbon atoms to produce a compound having the formula: R-C equivalent C-(CH2)x-OH, wherein R is F, C1, Br or I and x is 1 to 18. In particular, this invention provides a process for preparing a halopropyl alcohol, specifically iodopropyl alcohol. In one embodiment, iodopropyl alcohol is produced by sequentially adding potassium hydroxide, potassium iodide and an oxidizing agent to a solution of propyl alcohol at a rate and temperature sufficient to produce an iodopropyl alcohol.
Patent KR-20000022090-A (KR)
Title: Frangible spray dried agglomerated supports, a method for manufacturing such supports, and olefin polymerization catalysts supported thereon
Inventor: DENTON DEAN ALEXANDER
IPC: B01J31/22
Filed: 1997-06-19
Abstract: PURPOSE: Catalysts supports are provided to improve a catalyst capacity and to easily adjust various cohesions such as crushing intensity, abrasion resistance, mechanical intensity, by increasing the cohesions when it is an olefin polymers reaction. CONSTITUTION: Frangible catalyst support particles includes a spray-dried inorganic oxide which is selected from a group, is formed with SiO2, Al2O3, MgO, AlPO4, TiO2, ZrO2, Cr2O3 and a mixture thereof. Agglomerate particles have a micropheroidal shape which the agglomerated particles having more than 80 percent volume are smaller than the size distribution(D90) of original agglomerate particles. The agglomerated particles supporting the micropheroidal shape have an outward form which its surface is rough and scabrous, have IVS(Interstitial Void Spaces) which at least the part of the IVS supplies more than 10 channels to the inner parts of the agglomerate particles, from the agglomerate surface, by being passed through the surface of the agglomerate particles. The agglomerated particles have an approximately 15 to about 40 percent of average IVS. The agglomerate particles have approximately 1 to 250 micron of the average size, and have approximately 1 to 1000m2 of a surface area per 1 gram and an Attrition Quality Index(AQI) which is bigger than approximate 10. Composing particles which are derived to support agglomerate particles have the average size of approximately 3 to 10 micron of particles, before spraying and drying the composing particles.
Patent KR-20000055115-A (KR)
Inventor: KIM DAE YOUNG
IPC: F24F1/00
Filed: 1999-02-03
Abstract: PURPOSE: An air conditioner for both cooling and heating is provided to sufficiently heat a room by providing an additional heating device in a lower part of a main body of the air conditioner and prevent short, damage or malfunction of a control circuit of the heating device by mounting an insulation material at an outside lower part of the control circuit, thereby improving the heating efficiency of the air conditioner. CONSTITUTION: An air conditioner for both cooling and heating includes an upper panel formed with a suction hole and a discharge hole and coupled at a front upper part of a main body(1), and a lower panel(14) detachably coupled at a front lower part of the main body, so that room air drawn into the main body is subject to heat exchange for cooling and heating a room, wherein the lower panel is formed with a heating hole(14a) to be mounted with a heating device at a rear side and detachably mounted with a control part(106) connected to the heating device for controlling operation of the heating device.
Patent KR-19990072474-A (KR)
Title: 핵연료조립체내의부식과마모에대한핵연료봉의초음파검사방법및장치
IPC: G11C17/06
Filed: 1999-02-08
Abstract: 피복관으로 둘러싸여진 핵연료의 내부 코어를 갖는 핵연료봉의 초음파 검사 방법 및 장치가 기술되어 있다.  피복관은 소정의 벽 두께를 가지며, 피복관 안으로 초음파 유도 전파가 전달되는데, 이러한 피복관으로부터 피복관의 소정의 벽 두께의 변화를 나타내는 반사된 초음파가 탐지된다.
Patent KR-19990077715-A (KR)
Title: 배선의 온도 상승 시뮬레이션 방법
IPC: G06F17/50
Filed: 1999-03-09
Abstract: 배선의 단면에 대한 2 차원 열해석 시뮬레이션을 수행하여 열용량 (C 1 ) 을 구한다.     다음에, 배선 길이 방향의 1 차원 근사식 θ 0 = (Q 0 /2)(λ·SC 1 ) -1/2 (여기서 θ 0 는 보이드 내에서 배선의 온도 상승, Q 0 는 배선에서의 보이드의 열량, λ는 배선의 열전도율, S 는 배선의 단면적이다) 에 기초하여, 보이드 내의 배선 온도 상승 (θ 0 ) 을 구한다.     열용량 (C 1 ) 을  C 1 = λ'｛ (W/t) + (2.80/1.15) (h/t) 0.222 ｝(여기서, W 는 배선폭, h 는 배선 두께, t 는 기판막 두께, λ' 기판막의 열전도율이다) 의 식으로부터 구할 수도 있다.    이렇게 하여, 해석 시간을 단축시킬 수 있으며, 계산에 사용되는 메모리 및 디스크 용량을 절약할 수 있고, 메쉬 작성을 용이하게 할 수 있다.
Patent KR-20000066313-A (KR)
Inventor: KIM TAE SEONG
IPC: H01J17/00
Filed: 1999-04-15
Abstract: PURPOSE: A laser CRT is provided to enhance oscillation efficiency of a laser in a cavity with low voltage by compensating split efficiency of energy level which is caused by defects. CONSTITUTION: The laser CRT includes a valve(26), electron gun(29), laser target(23), and a circuit part(33). The inner part of the valve maintains a vacuum state. The electron gun is mounted to an inner part of the tube. The tube is mounted to the valve, and is enlarged. The laser target oscillates a laser beam. The electron beam from the electron gun is landed on the laser target. The circuit part includes an electrode formed on the laser target with a predetermined pattern, and a power-supply device for applying a power to the electrode. The circuit part is mounted to one end of the laser target, and applies a voltage to the laser target. Thereby, the laser CRT enhance oscillation efficiency of a laser in a cavity by compensating a split efficiency of energy level.
Patent KR-20000066678-A (KR)
Title: Manufacturing method for Decoration paper
Inventor: SEO SUK HONG
IPC: B44C1/16
Filed: 1999-04-20
Abstract: PURPOSE: A method for preparing a decorative paper made of Korean paper having the same quality and feeling as Korean paper which can be produced in a large quantity by a package process is provided. CONSTITUTION: A method for preparing a decorative paper made of Korean paper comprises the steps: a) preparing Korean paper having a predetermined size as a backing paper(4), adhering another Korean paper having a suitable size as background papers(2,2') on the top of the backing paper(4) and attaching Korean paper pieces(3,3') representing a desired design or character on the top of the background papers to make an original form; b) scanning the original form to convert an image file and delicately editing the image file by an image editing tool; and then c) making a printing film from the edited image file to print a decorative paper and applying surface treatment to the decorative paper.
Patent KR-19990068364-A (KR)
Title: 음식물및야채쓰레기자원화방법및그장치
IPC: A23K1/10
Filed: 1999-04-29
Abstract: 본 발명은 음식물 및 야채쓰레기 자원화방법에 관한 것으로, 음식물쓰레기에 함유된 일정크기 이상의 불용협잡물을 분쇄, 세정하여 염분을 제거하는 파쇄세정 수단과, 초동에 조개껍질, 철재류, 유리조각 등을 침적 제거할 수 있는 침적물 분리 수단과, 액상에 함유된 5㎜이상의 협잡물을 로타리스크린으로 제거하고 제거된 협잡물을 수납하여 75%이하의 함수율로 탈수하고 탈리액을 제 1 저류조에 저류하는 협잡물 제거 수단과, 펌프로 저류액을 유량조정조에 공급하고 조정조의 정량액상을 원심분리기로 고액분리시키는 수단과, 원심분리기의 분리액은 제 2저류조로 입하시켜 하수와 병합처리토록 하는 수단과,  분리케이크(Cake)는 스크류컨베어로 이송되면서 적당량의 분뇨케이크 톱밥 또는 마사토가 한 라인의 스크류컨베어에서 고르게 혼화되게 하는 혼화수단과, 소각기의 폐열 또는 열품기로 50℃이상의 공기가 바닥에 공급되고 분뇨케이크의 유기질 열에너지에 의해 고르게 숙성되게 하는 발효수단으로 구성하여 음식물쓰레기중의 유기물을 유기질퇴비로 자원화 할 수 있게 하고, 
     또한 협잡물처리기에서 탈수제거되는 협잡물을 스크류컨베어로 이송하고 스크류컨베어는 소각기의 배풍연돌 내부에 설치하여 협잡물을 건조시키는 수단과, 건조된 협잡물을 소각기에 유입하여 소각하는 저연비의 소각수단과, 소각기에서 형성되는 800℃이상의 폐열이 배풍연돌을 통과케하여 협잡물을 건조시키면서 건조로의 열원을 사용하여 야채쓰레기를 건조할 수 있게 하는 건조로 수단과, 유입호퍼에 반입된 야채쓰레기가 절단기로 적당히 절단되고 건조로 상단 벨트컨베어에 고르게 유입되면서 점점 하단으로 이송되게 하여 소각기 폐열로 야채쓰레기를 건조시키는 수단과, 건조된 야채쓰레기를 집하하여 압축기로 압축하는 수단으로 구성되어 사료화 할 수 있게 하므로써 대용량으로 발생되는 음식물 및 야채쓰레기를 저렴한 건설비와 유지관리비로 처리하면서 자원화 할 수 있는 특징이 있다.
Patent KR-19990088211-A (KR)
Title: 메모리디바이스시험장치및데이터선택회로
IPC: G01R31/3181
Filed: 1999-05-12
Abstract: 패킷(packet) 방식의 메모리 디바이스를 시험하는 메모리 디바이스 시험 장치를 제공한다. 
     본 발명에 의한 메모리 디바이스 장치는 패턴 발생기(60), 핀 데이터 셀렉터(70), 파형(波形) 정형기(30), 메모리 디바이스 삽입부(40) 및 비교기(50)를 가진다. 핀 데이터 셀렉터(70 및 71)는 복수의 신호로부터 1개의 신호를 선택하여 복수회로 나누어 출력하는 서브·핀 데이터 셀렉터(70a 및 71a)를 구비한다. 서브·핀 데이터 셀렉터(70a 및 71a)는 패턴 발생기(60)가 생성한 신호로부터 1개의 신호를 선택하고, 선택한 신호를 파형 정형기(30)로 보낸다. 기입 요구 커맨드 신호가 패킷 방식의 메모리 디바이스(46)에 입력된 후, 테스트 데이터 신호가 메모리 디바이스(46)에 기입된다. 메모리 디바이스(46)로부터 판독되는 테스트 데이터가 기대치 데이터와 비교기(50)에서 비교되어, 메모리 디바이스(46)의 양부(良否)를 판정한다.
Patent KR-20000074026-A (KR)
Inventor: KANG HAN SANG
IPC: F01P5/04
Filed: 1999-05-17
Abstract: PURPOSE: An enhancement of power output of an engine, considering the variation of the coolant temperature according to driving condition, is provided to cool down a high-temperature coolant generated during changing the long, but low speed to the above average speed or driving at average speed rapidly, simultaneously with an engine, thereby enhancing the output of an engine. CONSTITUTION: An enhancement of power output of an engine by controlling the coolant temperature comprises the steps of; detecting if the temperature of a coolant flowed in a radiator at vehicle's conversion of long-low speed to high speed rises over 70°C; driving a supplementary fan connected to a motor fan of the front of a radiator when the coolant temperature rises over 70°C; sucking the open air flowed in as driving with non-driven motor fan and exposing a radiator to the open air plentifully by sucking the open air flowed in if driving with non-driven motor fan; detecting if the temperature of a radiator's coolant exposed to the open air drops below 70°C; stopping a supplementary fan automatically when the coolant temperature drops below 70°C, so that an engine is cooled down easily by a coolant dropped below 70°C and the power output of an engine is improved.
Patent KR-19990088368-A (KR)
Title: 반도체웨이퍼상의금속을연마하기위한조성물및그의이용방법
IPC: C09K3/14
Filed: 1999-05-18
Abstract: 특정 성질과 조성을 갖는 알루미나형 미립자, 연마 촉진제 및 물을 함유하는, 반도체 장치의 금속 필름을 연마하기 위한 조성물.
Patent KR-20000074612-A (KR)
Inventor: KIM GWI SANG
IPC: H01L21/66
Filed: 1999-05-24
Abstract: PURPOSE: A dry etching apparatus for directly measuring temperature of a wafer is provided to precisely control temperature of the wafer loaded on a wafer chuck according to a process condition, by embodying a wafer transfer or wafer chuck on which a temperature detecting sensor is mounted. CONSTITUTION: A dry etching apparatus for directly measuring temperature of a wafer includes a wafer chuck and a wafer transfer(1). The wafer chuck on which the wafer to be processed is loaded, has a penetration hole. The wafer transfer loads or unloads the wafer on the wafer chuck, inserted into the penetration hole while moving up and down. A temperature-detecting sensor is established in an end of the wafer transfer to directly measure the temperature of the wafer loaded on the wafer chuck while the wafer is being processed.
Patent KR-20000074897-A (KR)
Inventor: KO CHANG GI
IPC: H01J29/48
Filed: 1999-05-27
Abstract: PURPOSE: An electron gun for a color CRT(Cathode Ray Tube) is provided to shorten a working time by improving a span-set process for setting a distance between a cathode and a G1 electrode and to enhance an electron gun by preventing the electrode from transforming. CONSTITUTION: During beading, electrodes and non-electrodes such as a cathode support(15) and a heater support are fixed by a bead glass(11). Herein, an auxiliary cathode support(15') is added between a G1 electrode(7) and a cathode(16) to support the cathode(16) during span-set processing. The front negative portion of the cathode(16) passes through a hole of the auxiliary support(15') while the rear sleeve portion has a larger diameter than the hole is blocked. To adjust a distance(D) between the negative portion and the G1 electrode(7), a spacer therebetween and the cathode(16) are adjusted in thickness and height respectively. Finally, the cathode(16) is inserted and welded to the support(15).
Patent KR-20000075259-A (KR)
Inventor: CHOI HYEON SEOK
IPC: H04B1/40
Filed: 1999-05-31
Abstract: PURPOSE: A method for controlling power supply of a portable telephone set, is provided to independently control power supply of a screen display device of the portable telephone set, and to cut off the power supply of the screen display device when the portable telephone set stands at a standby state over a predetermined time. CONSTITUTION: A portable telephone set has a screen display device and a system controller. A critical standby time is set up for cutting off power supply. If the portable telephone set is converted to a standby state, a running standby time is measured. The critical standby time and the running standby time are compared. If the running standby time is longer than the critical standby time or equal to the critical standby time, power supplied to the screen display device is cut off.
Patent KR-20000005863-A (KR)
Inventor: DAKEISHI AKIRA
IPC: B24B37/013
Filed: 1999-06-03
Abstract: PURPOSE: A polishing process examination method is provided to accurately examine the process regardless of various factors affecting the optical measurement. CONSTITUTION: An examination device of polishing process contains:a examining light device for examining the detection light beam with a semiconductor wafer; the 1st receiving light device for outputting the 1st signal according to the amount of the light beam, is received the reflected light beam; the 2nd receiving light device for outputting the 2nd signal according to the amount of the light beam diffused and diffracted; an examination device for examining the polishing process of the wafer using the 1st and the 2nd signals.
Patent KR-19990068599-A (KR)
Title: 수갑식통발홀더장치
IPC: A01K69/00
Filed: 1999-06-04
Abstract: 본 발명은 수갑식 통발홀더장치에 관한 것으로, 감아올려지는 통발줄(101)의 통발(103)이 견고하게 매달릴 수 있도록 하고 통발줄(101)에 걸려 있는 통발(103)의 회수가 간단하고 편리하게 수행되도록 함으로써 작업능률이 향상되도록 한 것이다.  이를 위해, 배에 연결된 통발줄(101)에 고기잡이용 통발(103)을 매달기 위한 수갑식 통발홀더장치(110)는, 가장자리 부분이 상호 결합하여 형성되는 힌지부(112a, 112b)를 중심으로 상호 회동함으로써 통발줄(101)을 파지 및 파지해제하고 상기 통발(103)이 매달리는 한쌍의 홀더몸체부(111a, 111b); 각 홀더몸체부(111a, 111b)의 내측벽에서 통발줄(101)의 길이방향으로 구배지게(tapered) 형성되는 테이퍼홈부(120a, 120b); 테이퍼홈부(120a, 120b) 내부에 수용되어 그 일측면이 홀더몸체부(111a, 111b)에 의해 파지된 통발줄(101)과 접촉하고 그 타측면이 테이퍼홈부(120a, 120b)의 내측벽과 각각 접촉하여 테이퍼홈부(120a, 120b) 내부에서 슬라이딩 이동하여 테이퍼홈부(120a, 120b)의 소폭구간에 진입할 때 그 이동이 저지됨으로써 홀더몸체부(111a, 111b)가 통발줄(101)로부터 길이방향으로 미끄러지는 것을 방지하는 슬라이딩척킹부재(121a, 121b); 및 각 홀더몸체부(111a, 111b)의 힌지부(112a, 112b)가 형성되는 일측의 다른 타측 가장자리 부분에 설치되어 통발줄(101)을 파지한 홀더몸체부(111a, 111b)가 결합해제되는 것을 방지하는 결합부를 포함한다.
Patent KR-20000006105-A (KR)
Inventor: SATOGASU AKI
IPC: C12P19/04
Filed: 1999-06-11
Abstract: PURPOSE: A producing method of a nucleic acid substance is provided to simplify the substance such as a seasoning and the like and to improve the productivity by effectively obtaining the nucleic acid substance from the cultivating substance after accumulating the nucleic acid substance in the cultivating substance. CONSTITUTION: The producing method of a nucleic acid substance is composed of the steps of: culturing the microorganism which is not normally able to repress the protein to the purin operon at a cultivating substance; accumulating the nucleic acid substance in the cultivating substance; and obtaining the nucleic acid substance from the cultivating substance.
Patent KR-20010002177-A (KR)
Inventor: JEUNG ZWA YONG
IPC: A01K91/04
Filed: 1999-06-08
Abstract: PURPOSE: When tying a fishing line(4) on the ear portion(2) of the fishing hook(1), the knot leaves no odd end of the line(4). The knot of tying the fishing line(4) on the ear(2) of a hook(1) has no odd end after tying in the manner of having a reinforcing line(6) in double with the line(4). CONSTITUTION: The knot is made in the form of rolling hitch with the doubled reinforcing line(6) and a reinforcement on the hook ear(2). The fishing line also has a ball clamp over the knot for line protection.
Patent KR-19990068720-A (KR)
Title: 쑥으로만든먹는옛날껌
Filed: 1999-06-14
Abstract: (1)발명이 속한 기술분야-식품제조분야로서 쑥과 각종 곡물을 가공하여 껌으로 이용하는 것. 
     (2)발명의 목적-치아를 꼭꼭 눌러주어 간접적인 잇몸 마사지 효과가 있고 쑥의 약리작용으로 풍치를 치료하고 구취제거효과가 있어 치아건강증진이 목적임. 
     (3)발명의 구성-익힌 쑥과 살짝 데친 쑥, 생쑥을 주재료로 하고 현미, 보리찹쌀, 통밀, 콩가루, 꿀, 레몬 등을 배합하여, 쑥의 섬유질을 기존 껌의 치클베이스 대신 이용하는 옛날껌이며 씹다가 삼킬 수 있는 껌임. 
     (4)발명의 효과-식후 음식냄새제거, 평상시 구취제거, 풍치 치료, 변비 개선, 소화기능 촉진, 간기능 호전, 부인과 질환 치료.
Patent KR-20010003171-A (KR)
Inventor: LEE SUNG DUK
IPC: H01R13/6477
Filed: 1999-06-15
Abstract: PURPOSE: A structure for supporting a dielectric of a radio frequency connector is provided to reinforce the maintenance of a coaxial state by combining the dielectric of connector firmly. The structure can be obtained by a low product cost through the simple structure of the dielectric being used to the connector. CONSTITUTION: The structure for supporting a dielectric of a radio frequency connector includes female and male connectors(20,10) fixed completely. Outside conductors(12,22) protect the female and male connectors(20,10) from the outside. Dielectrics(14,24) are made of teflon or others dielectric materials. Inside conductors(16,26) are for incoming or outgoing a signal. When passing a direct current component through the inside conductors(16,26), the inside conductors(16,26) made of copper alloy are used and when passing a radio frequency current through the conductors(16,26), the conductors(16,26) made of rare metal such as beryllium etc. are used. The inputted radio frequency flows between the inside of the outside conductor(26) and the outside of the inside conductor(16).
Patent KR-20010003285-A (KR)
Inventor: KIM HONG SEON
IPC: H01L21/283
Filed: 1999-06-22
Abstract: PURPOSE: A method for manufacturing a plug of a semiconductor device is provided to guarantee process margin and to reduce manufacturing steps, by controlling a gap between gate lines to form a plug electrically connecting a bit line or a storage node with an active region of a transistor, and by forming a self-aligned plug only in the active region using a sidewall spacer of a gate. CONSTITUTION: A gate insulating layer(32) is formed on a semiconductor substrate(30) in which a field region and an active region are defined. A plurality of gate lines(33) having a cap insulating layer are formed. A low density impurity diffusion region(35) is formed on the active region. A sidewall spacer(361) exposing a part of the low density impurity diffusion region to a side of a gate line of the active region is formed with an insulating material, and the insulating material is filled between gate lines of the field region. A high density impurity diffusion region is formed in the active region by using the sidewall spacer. A conductive plug is formed which contacts the exposed impurity diffusion region and fills a space formed by the sidewall spacer of the active region.
Patent KR-20010003664-A (KR)
Inventor: KANG CHUN SU
IPC: H01L21/027
Filed: 1999-06-24
Abstract: PURPOSE: A method for forming an alignment key of a semiconductor device is provided to prevent the alignment key from breakage using a CMP(Chemical Mechanical Polishing) process. CONSTITUTION: A trench of micro width is formed on a scribe line in a semiconductor substrate(10). An oxidation layer is vaporized on the substrate(10). Using a CMP(Chemical Mechanical Polishing) process, the trench is filled up with the oxidation layer. A resist pattern is made to expose the trench part on the scribe line in the substrate(10). The space between trenches is the same to the interval between the outer trench and the resist pattern. Using the resist pattern and the reclaimed oxidation layer as a mask, the scribe line of the substrate(10) is etched to the predetermined depth. After removing the resist pattern and oxidation layer, a salience(14) serves as an alignment key.
Patent KR-20010008576-A (KR)
Inventor: EUN YONG SEOK
IPC: H01L21/76
Filed: 1999-07-02
Abstract: PURPOSE: A method for forming an isolation layer of a semiconductor device is provided to remove a rear nitride layer by using a protective oxide layer or a gap filling oxide layer as a shield layer. CONSTITUTION: A method for forming an isolation layer of a semiconductor device comprises the following steps. A pad oxide layer(20) and a nitride layer(30) are accumulated on a semiconductor substrate(10). A trench(40) is formed thereon by performing a masking etching. A protective oxide layer(50) is accumulated on an inner portion of the trench(40) and an upper portion of the nitride layer(30). A rear nitride layer(30a) is removed from a rear face of a wafer. A gap filling oxide layer is accumulated on a front face of the wafer in order to bury the inner portion of the trench.(40) The gap filling oxide layer is flattened by using a chemical mechanical polishing method. The remaining nitride layer(30) is removed therefrom.
Patent KR-20000011779-A (KR)
Inventor: MAHOLTHANS TOBIAS
IPC: G03G9/097
Filed: 1999-07-16
Abstract: PURPOSE: Aluminum azo complex dyes as charge inhibitor are provided, which have rapid achievement of the desired charge level and constancy of charge over the prolonged activation period, and exhibit high thermal stability. CONSTITUTION: Aluminum azo complex dyes of a compound of formula 1 and a compound of formula 1a in a ratio of 2:1 are homogeneously incorporated into materials by mixing with extrusion, kneading, bead milling and the like and are used as charge inhibitor in toner and developer for electrophtograph, and as charge enhancer in powdery coating material, electret material, statistic separation process, inkjet process and color filter.