baber/WOPTO huggingface dataset:
Patent KR-20040054337-A (KR)
Title: Aluminum wire for production of ULC steel and method for lowering oxidation of slag using it
Inventor: LEE GYE YEONG
IPC: C21C5/36
Filed: 2002-12-18
Abstract: PURPOSE: An aluminum wire for deoxidizing slag is provided which is supplied to slag layer to lower oxidation degree of slag existing on an upper part of molten steel after discharging molten steel primarily roughly refined in converter or electric furnace into ladle, and a method for reducing oxidation of slag using the same is provided. CONSTITUTION: In a wire for deoxidizing low carbon steel slag, the wire for deoxidizing the slag is characterized in that an outer layer of the wire is formed of aluminum, a central part of the wire enveloped by the outer layer comprises calcium powder, calcium oxide and carbon powder mixture, and the total material of the wire including the outer layer comprises 35 to 50 wt.% of aluminum, 35 to 50 wt.% of calcium oxide, 5 to 15 wt.% of calcium and 5 to 10 wt.% of carbon. The method for reducing oxidation of slag is characterized in that concentration of (T.Fe+MnO) in slag is controlled to 3 to 5 wt.% by injecting the wire for deoxidizing slag into the slag on an upper part of the molten steel in a feeding rate of 20 to 30 m/min using a wire feeder before the vacuum treating process after discharging molten steel into ladle from first refining furnace.
Patent KR-20030063103-A (KR)
IPC: H01L23/498
Filed: 2002-12-27
Abstract: 본 발명은 칩 캐리어들의 고정을 위한 방법에 관한 것으로, 여기서 트랙들이 금속 박판으로부터 펀칭되고 칩은 그 다음에 결과적으로 생성되는 트랙 시스템에 적용되며 접합 와이어에 접합되고 그리고 밀봉되는데, 여기서 상기 칩을 지지하는 칩 캐리어는 전기적 절연층으로 코팅되며, 상기 층은 밀봉 혼합물인 것이 바람직하고, 따라서 상기 층은 칩 캐리어를 넘어서 연장되어, 금속 박판 및 칩 캐리어 사이의 모든 금속 접점들이 분리되는 경우에 상기 칩 캐리어는 절연층을 통해서 금속 박판에서 적소에 위치되어 고정된다.
Patent KR-20040060091-A (KR)
Title: Method for forming magnesium diborate film using atomic layer deposition process
Inventor: CHO HEUNG JAE
IPC: H01L39/12
Filed: 2002-12-30
Abstract: PURPOSE: A method for forming a MgB2 is provided to increase the size and to improve productivity by using ALD(Atomic Layer Deposition). CONSTITUTION: A Mg(thd)2 molecule is adsorbed on a silicon substrate(100) by applying Mg(thd)2 as a magnesium source. A residual magnesium source is removed by purging. By applying B2H6 as a boron source to the resultant structure, a MgB2 thin film is formed on the silicon substrate by exchange reaction. A residual B2H6 and a reaction particle are removed by purging.
Patent KR-20040061525-A (KR)
Title: Apparatus for measuring temperature of device in semiconductor device test handler
Inventor: PARK CHAN HO
IPC: H01L21/66
Filed: 2002-12-31
Abstract: PURPOSE: An apparatus for measuring the temperature of a test handler of a semiconductor device is provided to precisely detect the temperature of a semiconductor device by making a temperature sensor directly contact the surface of the semiconductor device connected to a socket when a device like a BGA(ball grid array) semiconductor device is tested. CONSTITUTION: A temperature sensor(100) is so installed at the edge of the upper surface of a test socket(25) to be exposed to the outside, and comes in contact with the surface of the semiconductor device coupled to the test socket. A control unit controls the injection of cooling fluid through a nozzle assembly according to a temperature value transferred from the temperature sensor, electrically connected to the temperature sensor.
Patent KR-20020031159-A (KR)
Inventor: CHENG JUN
IPC: C11D11/00
Filed: 2000-07-17
Abstract: A composition for the cleaning of residues from substrates from about 0.01 percent by weight to about 10 percent by weight of one or more fluoride compounds, from about 20 percent by weight to about 50 percent by weight water, from about 20 percent by weight to about 80 percent by weight of a lactam solvent and from 0 to about 50 weight percent of an organic sulfoxide or glycol solvent. The composition has a pH between about 2 and about 10. Additionally, the composition optionally contains corrosion inhibitors, chelating agents, surfactants, acids and bases. In use of the composition, a substrate is contacted with the composition for a time and at a temperature that permits cleaning of the substrate.
Patent KR-20020027521-A (KR)
IPC: C09K3/10
Filed: 2000-07-31
Abstract: 본 발명은 휘발성 부식 저해제를 기재로 하는 조성물 또는 예비-혼합물을 포함하는 것이 특징인 폴리머-기재의 마개에 관한 것이고, 이 때 휘발성 부식 저해제는 그 용해점이 40 내지 110℃, 바람직하게는 50 내지 90℃인 고체 또는 반죽 물질로 구성된 한가지 이상의 구조제를 유효한 양으로 포함한다. 
     또한 본 발명은 부식에 대항하여 공동 금속 성분의 내부를 보호하기 위한 상기 마개의 용도에 관한 것이다.
Patent KR-20020047197-A (KR)
IPC: G03F7/20
Filed: 2001-07-25
Abstract: 본 발명은 기록이 실시간으로 수행되는 비임 보상을 가능하게 진행할 때 실시간으로 근접 가열을 예상하는 방법에 관한 것이다.  기록 패턴이 전술한 운동학을 따르지 않는 벡터 스캔에 특별한 관심이 주어지지만, 기록은 셀로 클러스터되는 경향이 있다.  표준 셀 라이브러리가 구성된다.  패턴의 기록이 진행될 때, 개개 플래쉬는 현재 기록 시점으로부터 미리 기록된 셀의 거리와, 미리 기록된 셀의 기록 이후의 경과 시간의 함수로서 레지스트 내의 근접 가열을 결정하기 위해 표준 셀과 비교되는 셀로 응집된다.  현재 기록은 계산양을 한정하지만 공간 및 시간에 대한 온도의 변화를 충분히 미세하게 하도록 충분히 거친 공간 시간 그리드에 스냅된다.  셀의 슈퍼-셀, 슈퍼-슈퍼-셀 등으로의 또다른 응집이 또한 개시된다.  본 발명의 기술에 따른 장점은 웨이퍼 표면 상에 패턴을 기록하기 위한 벡터 스캔 또는 스텐슬 기술에 대한 적용 가능성에 관한 것이며, 래스터 또는 서펜틴 스캔의 경우처럼, 특정 패턴의 기록에 대한 예지에 의존하지 않는다.
Patent KR-20020040857-A (KR)
IPC: C08J5/22
Filed: 2000-10-10
Abstract: 플루오르화, 예컨대 퍼플루오르화 가교결합기로 가교결합된, 친수성기를 갖는 가교결합 플루오로카본, 예컨대 퍼플루오로카본 중합체 조성이 제공된다.  또한 친수성 작용기를 갖는 분지형 플루오로카본, 예컨대 퍼플루오로카본 중합체 조성이 제공된다.
Patent KR-20020081386-A (KR)
IPC: C02F1/44
Filed: 2002-01-09
Abstract: The present invention relates to a water purifier capable of being loaded with a plurality of kinds of filter cartridges, and provided with a display adapted to show the kind of filter cartridge, a user being able to easily ascertain the kind of the water-purifying cartridge in use. The water purifier according to the present invention is preferably provided with a power source for use in displaying the kind of filter cartridge, and a display for showing thereon the power source replacement time, so that this water purifier works to easily notify a user of filter cartridge and power source replacement time. <IMAGE>
Patent KR-20030016235-A (KR)
Title: Urease inhibitors
IPC: C07D513/04
Filed: 2001-03-02
Abstract: A urease inhibitor and an anti-Helicobacter pylori agent, which contain, as an active ingredient, an isothiazole derivative represented by the general formula (1): <CHEM> wherein R<1> represents a hydrogen atom or an amino group, R<2> represents a hydrogen atom, a lower alkyl group, or an acetyl group, and X represents a carbon atom or a nitrogen atom. These drugs are effective to prevent and treat gastrointestinal diseases caused by urease of Helicobacter pylori, such as chronic gastritis and gastroduodenal ulcer.
Patent KR-20020094026-A (KR)
Title: 비정질 금속 산화물 게이트 유전체 구조 및 그 방법
IPC: H01L29/51
Filed: 2001-03-28
Abstract: 본 발명의 특정 실시예에 따라서, 게이트 유전체를 형성하는 방법이 기재된다. 반도체 웨이퍼(34)가 침착 챔버 내에 배치된다. 상기 반도체 웨이퍼(34)는 가열되고, 프리커서 가스가 그 챔버 내로 유입된다. 일실시예에서, 상기 프리커서는 실리콘, 산소, 및 전이 금속 중 한 성분을 포함한다. 또 다른 실시예에서, 상기 성분은 2족 금속을 포함한다.
Patent KR-20030015254-A (KR)
Title: Pressure stopper for bottles and the like
IPC: B65D39/12
Filed: 2001-05-10
Abstract: Destined to bottles whose neck (1) is of the revolution type and has a smooth internal surface, being constituted as from a cylindrical bushing (2) of a soft material, like, for example, rubber, with an outside diameter less than the inside diameter of the bottle neck (1), linked with what should be its external end in a perimetric flange (3) for leaning over the mouth (4) of said bottle. Inside this bushing (1), there are two rigid parts, an external part (5) likewise finishing externally in a discoidal head (6) and an inside part (9), in turn finishing internally in a trunco-conical head (10), these parts provided with a threaded neck (8) and a threaded and complementary pin (12), which permits the axial level of both parts as a whole to vary, by means of rotation in one or other direction of the discoidal head and externally (6), such that in the axial contraction of said rigid parts, the trunco-conical head (10) radially deforms the lower end of the bushing (2) against the inside surface of the bottle neck (1) causing an airtight and stable closure. <IMAGE>
Patent KR-20030007906-A (KR)
IPC: G02F1/1368
Filed: 2002-04-10
Abstract: 콜레스테릭 액정 디스플레이는 데이터 신호를 수신하기 위한 하나의 입력(12), 및 복수의 출력을 갖는 픽셀 어드레스 회로를 구비하며, 각 출력은 픽셀 구동 신호를 액정 물질(20)의 각 부분에 인가하기 위한 것이고, 각 출력에 대한 픽셀 구동 신호는 픽셀 어드레스 회로에 의해 각 출력에 독립적으로 스위칭가능하다. 이것은 공간적으로 분리된 서브-픽셀을 제공하고, 다수의 서브-픽셀은 각 픽셀에 그레이 스케일 출력을 제공하기 위해 어드레싱될 수 있다. 그러나, 각 픽셀 구동 신호는 2-레벨 디지털 신호일 수 있다.
Patent KR-20040064402-A (KR)
Title: Functional curry containing diet enzyme, herb medicines and functional materials
Inventor: SON YOUNG SUK
IPC: A23L23/00
Filed: 2003-01-11
Abstract: PURPOSE: Functional curry containing diet enzyme, herb medicines and functional materials is provided, which stimulates immune system and lymph system to prevent and recover diseases, inhibits aging and improves immunity in animals and plants without side effects. CONSTITUTION: The method for preparing the functional curry containing diet enzyme, herb medicines and functional materials comprises the steps of: fermenting a mixture of grains such as cowpea, oats, buckwheat, Chinese millet, rice, barley, job's tear, foxtail millet and bean, fruits such as apple and grape, carbohydrates such as potato, sweet potato, burdock, hemp, sugar, starch and arrowroot starch, and sugarcane, pulp and alcohol to prepare vinegar containing diet enzyme; mixing 100 kg of a mixture of functional materials containing herb medicines, described in page 3 with 100 kg of a fruit mixture of maesil(Japanese apricot), ginger, grape, banana, pear, pineapple, jujube, chestnut, apple, melon, watermelon, persimmon, apricot, peach and plum in a predetermined ratio and 100 kg of grains, inserting the mixture into a pot, and fermenting the mixture at 15 to 45 deg. C for 1 to 6 months to prepare 230 kg of functional materials; mixing the functional materials with the vinegar containing diet enzyme in a ratio of 93:17, adding 50 kg of water into the mixture and fermenting the mixture for 1 month or more to prepare 250 kg of fermented functional material juice; and adding the fermented functional material juice into the curry to prepare the functional curry containing diet enzyme, herb medicines and functional materials.
Patent KR-20040066577-A (KR)
Inventor: HAN SANG WOO
IPC: E02F3/627
Filed: 2003-01-20
Abstract: PURPOSE: A bucket fixing structure of a tractor is provided to reduce the manufacturing cost and the manufacturing progress by fixing a bucket to the backside of a tractor firmly, to fix/unfix to/from a tractor by reducing the whole weight of a bucket fixing structure, to move a tractor rapidly and conveniently by folding up a support to locate a bucket on the lower part of a tractor, to prevent the damage of a cylinder by the weight of a support and a bucket, and to secure the safety on works by scattering the weight added on a tractor by fixing a bucket to the backside of a tractor. CONSTITUTION: The bucket fixing structure of a tractor comprises: a lower support (4) attached to one ends of arms(2,2') fixed between a pair of rear wheels(102) located on the backside of a tractor(1); a fixed cylinder(3) whose one end is fixed to the center of the lower support(4) and the other end is fixed to one end of the tractor(1) between rear wheels(102) of the tractor(1); a reinforcing support(6) fixed to one end of the lower support(4); a reciprocating cylinder(5) whose one end is fixed to the end of the reinforcing support(6) and the other end is fixed to the end of the lower support(4); a bucket reinforcing support(9) fixed to one end of the reinforcing support(6); a bucket(10) fixed to the end of the bucket reinforcing support(9); a bucket moving cylinder(8) whose one end is fixed to the lower side of the bucket(10) and the other end is fixed to the lower side of the bucket reinforcing support(9); and a bucket reciprocating cylinder(7) whose one end is fixed to the upper part of the bucket reinforcing support(9) and the other side is fixed to the middle of the reinforcing support(6).
Patent KR-20040067100-A (KR)
Inventor: SONG JEONG SEOP
IPC: B01J20/32
Filed: 2003-01-21
Abstract: PURPOSE: Provided are a complex adsorbing agent, which shows good adsorption capacity regarding carcinogen such as tar, nicotine, formaldehyde, hydrogen cyanide, acetone, benzopyrene, and a method for preparing thereof. CONSTITUTION: The method for preparing the complex adsorbing agent, where an organic silicon polymer layer of poly£1,3-bis(silsesqui oxypropyl)thiocarbamide| comprises steps of (a) after putting 3-aminopropyl trialkylsilane, wherein in a reactor under nitrogen gas atmosphere and dropping carbon disulfide therein with stirring, heating and refluxing it to prepare N,N'-bis(3-trialkoxysilylpropyl)thiocarbamide or N,N'-bis(3-trialkylsilylpropyl)thiocarbamide; (b) dissolving the N,N'-bis(3-trialkoxysilylpropyl)thiocarbamide or N,N'-bis(3-trialkylsilylpropyl)thiocarbamide in solvent to prepare a solution of N,N'-bis(3-trialkoxysilylpropyl)thiocarbamide or N,N'-bis(3-trialkylsilylpropyl)thiocarbamide; (c) mixing the solution of the step (b) with support to prepare a support where the N,N'-bis(3-trialkoxysilylpropyl)thiocarbamide or N,N'-bis(3-trialkylsilylpropyl)thiocarbamide is supported; and (d) polycondensing the support of the step (c) in a basic aqueous solution, wherein R is C2H5, OCH3 or OC2H5 and n is a polymerization degree of 2 to 1,500.
Patent KR-20040068754-A (KR)
Inventor: JUNG JIN SEOP
IPC: H01J29/07
Filed: 2003-01-27
Abstract: PURPOSE: A color CRT is provided to prevent miss-landing by minimizing a magnetic filed of a vertical component and only generating a magnetic field of a horizontal component. CONSTITUTION: A color CRT comprises a panel having a screen, a funnel mounted on the rear surface of the panel, an electron gun inserted into a neck part of the funnel for emitting electron beams toward the screen, and a shadow mask. The shadow mask includes a plurality of electron beam through holes arranged with a predetermined space on the inner surface of the panel and is welded at a rail. The rail includes a long side part(12) and a short side part(13) having different magnetic permeability.
Patent KR-20030065366-A (KR)
Title: 다수의 팽창기를 갖는 에어백 모듈
IPC: B60R21/01
Filed: 2003-01-28
Abstract: 본 발명의 에어백 모듈은 하우징/팽창기 조립체와, 에어백 조립체의 에어백(120)을 팽창시키는 가스를 수용하도록 하우징/팽창기 조립체에 결합된 에어백 조립체를 구비하고, 상기 하우징/팽창기 조립체는 다수의 팽창기(100a, 100b)를 포함하고, 각 팽창기는 그의 제 1 단부 부근에 적어도 하나의 출구 구멍(104)을 가지고, 각 팽창기는 각각의 반대쪽 제 2 단부(140)를 가지며, 상기 하우징/팽창기 조립체는 팽창기를 서로 장착하기 위한 수단(134a, 134b; 156)을 더 포함하며, 상기 팽창기 중 하나의 적어도 하나의 출구 구멍(104)은 상기 팽창기 중 다른 하나의 제 2 단부(140)에 인접하게 배치되고 그리고 상기 하나의 팽창기의 제 2 단부(140)는 상기 다른 하나의 팽창기의 출구 구멍(104)에 인접하게 배치된다.
Patent KR-20040072768-A (KR)
Inventor: PARK YUN JAE
IPC: G02F1/1333
Filed: 2003-02-11
Abstract: PURPOSE: A device for connecting a driving module and a liquid crystal display having the same are provided to prevent loose connection between a data printed circuit board and a control printed circuit board. CONSTITUTION: A first connector(380) is formed on a data printed circuit board(350) outputting video signals to a liquid crystal panel. A second connector is formed on a control printed circuit board(370) outputting control signals to the data printed circuit board. A third connector is installed to insert the first connector and the second connector, and electrically connects the first connector with the second connector. The third connector includes a first insertion groove to which the first connector is inserted, a second insertion groove to which the second connector is inserted, and first conductive lines electrically connecting the first connector with the second connector.
Patent KR-20040072419-A (KR)
Title: Scanning squid microscope
Inventor: LEE HO NYEON
IPC: H01J37/26
Filed: 2003-02-12
Abstract: PURPOSE: A scanning SQUID(super conducting quantum interference device) microscope is provided to achieve improved performance of a SQUID sensor by maintaining the temperature of the SQUID sensor low, and improved resolution by minimizing the distance between the SQUID sensor and a specimen. CONSTITUTION: A scanning SQUID microscope comprises a SQUID sensor(41) for measuring magnetic fields of a specimen(50); a vacuum container(43) for maintaining the SQUID sensor at a low temperature; a cooling unit for cooling the SQUID sensor in the vacuum container; a cold finger(44) and a thermal link(45) for connecting the cooling unit and the SQUID sensor; and a thermal barrier(47) connected to the cold finger or the thermal link, and which cuts off the peripheral area of the SQUID sensor from the inner wall of the vacuum container.
Patent KR-20040075994-A (KR)
Title: Panel for CRT
Inventor: LEE GEUN PIL
IPC: H01J29/88
Filed: 2003-02-24
Abstract: PURPOSE: A panel is provided to control a panel etching process by selecting a panel washing material, and achieve improved white uniformity by uniformly forming a black matrix layer. CONSTITUTION: A panel comprises a plurality of black matrix layers formed on the inner surface of the panel; and a phosphor screen deposited with red, green, and blue phosphors and formed between the black matrix layers. The inner surface of the panel is washed by the chemical article containing an alkaline cleaner 5 to 40 weight parts, pure water 45 to 90 weight parts, a surface active agent 2 to 10 weight parts, and a builder 0.5 to 5 weight parts.
Patent KR-20040076359-A (KR)
Inventor: CHOI HYEON GYEONG
IPC: H04W76/06
Filed: 2003-02-25
Abstract: PURPOSE: A multimedia streaming service method of a 3-generation communication network is provided to supply a deactivate PDP context request signal to a terminal if a streaming service stops, so that the terminal can terminate a PS(Packet Switching) call, and to inform an upper application of corresponding information, thereby coping with the stopped streaming service. CONSTITUTION: An MT(Mobile Terminal)(20) is informed of a network failure, and a TE(Terminal Equipment)(10) informs a user of the network failure. A GGSN(50) cancels a PS call, and supplies a PDP context remove request signal to an SGSN(40). The SGSN(40) supplies a PDP context deactivate request signal to the MT(20). The MT(20) transmits a deactivate PDP context accept signal to the SGSN(40). The SGSN(40) transmits a PDP context remove response signal. The SGSN(40) and the MT(20) cancel a radio access bearer setup. The MT(20) informs the TE(10) of an event showing that the PS call is canceled. The TE(10) informs the user of a streaming service stop, and completes a streaming service.
Patent KR-20040076428-A (KR)
Inventor: JI SEOK MAN
IPC: H04N19/89
Filed: 2003-02-25
Abstract: PURPOSE: A temporal scalable video coding system and method thereof are provided to recover an error within a short period of time when the error is generated while video service such as wired/wireless video phone and VOD(Video On Demand) is provided. CONSTITUTION: A temporal scalable video coding system includes a scalatility pre-processor(101), a base layer(104), and at least one enhancement layer(102). The scalability pre-processor divides an input image in response to a frame rate. The base layer generates a lower layer bitstream from the first input data. The enhancement layer generates an upper layer bitstream from the second input data using an encoder mid-processor(103). The temporal scalable video coding system includes a base layer for generating the first output from a lower bitstream using a decoder mid=processor when an error is generated in the lower layer bitstream, at least one enhancement layer for generating the second output from an upper bitstream using a mid-processor when an error is generated in the upper layer bitstream, and a scalability post-processor for generating an output image from the first and second outputs.
Patent KR-20030043807-A (KR)
Inventor: LU YOUNG KWON
IPC: C09J7/04
Filed: 2003-02-21
Abstract: PURPOSE: Provided is a convenient wallpaper not requiring sizing, which is quickly dried, does not require a special treatment of already papered paper, and can be conveniently papered by simply spraying water to the wallpaper. CONSTITUTION: The wallpaper is characterized by not require a special treatment of already papered wallpaper by applying solid glue on the papered wallpaper, and by being conveniently papered by simply spraying thereto, wherein liquid glue is substituted with solid glue(polyvinyl propylenes), so as to overcome disadvantages of the liquid glue. By using the wallpaper, papering is simplified, already papered wallpaper can be used as it is, time and labor cost are saved, and sizing and cutting are unnecessary, and finally, garbage volume is reduced.
Patent KR-20040076684-A (KR)
Inventor: HWANG GYU HAN
IPC: H04B1/48
Filed: 2003-02-26
Abstract: PURPOSE: A method for fabricating a dual band front end module is provided to maintain characteristics of a SAW filter as it is by making GND terminals of a GND layer and an LTCC(Low Temperature Co-fired Ceramic substrate) have the same potential value. CONSTITUTION: An upper GND(GND1) is formed right below a GND layer of a SAW BPF mounting surface of an LTCC, and a lower GND(GND2) is formed right above the bottom. Especially, the upper GND layer inserted in the LTCC is formed right below the GND layer of the SAW BPF mounting surface, a common layer is formed between the upper GND layer and the GND layer of the SAW BPF mounting surface, and GND terminals of the upper GND layer and the LTCCs are connected through a via hole in order to have the same potential.
Patent KR-20040079214-A (KR)
Title: Stuffing material containing cheese having enhanced flavor and taste and good chewing texture
Inventor: SHIN DONG RIM
IPC: A23L7/10
Filed: 2003-03-06
Abstract: PURPOSE: A stuffing material containing cheese together with meat and vegetables as a main material is provided. It is reduced in the odor of meat and wheat flour while suiting the consumer's individual taste. CONSTITUTION: During the manufacture of a stuffing material, 30% by weight of cheese is added to meat and vegetables as a main material. For an example, a cup of wheat flour is kneaded with 4 tablespoons of water and then aged in a vinyl sheet. The dough is spread with a pusher to give a dumpling skin with a diameter of about 7cm.
Patent KR-20030074334-A (KR)
Title: 반도체 레이저 소자
IPC: H01S5/30
Filed: 2003-03-10
Abstract: 본 발명은 반도체 기판상에서 활성층을 갖는 공진기 구조를 구비한 단면 발광형의 650㎚ 밴드 적색 반도체 레이저 소자에 관한 것이다.  저반사 3층막은 공진기 구조의 출사 단면에 제공되고, 고반사 다층막은 공진기 구조의 후단면에 제공된다.  저반사 3층막은 10㎚의 두께를 갖는 제 1 Al 2 O 3 막과, 190㎚의 두께를 갖는 Si 3 N 4 막, 및 10㎚의 두께를 갖는 제 2 Al 2 O 3 막을 출사 단면상에 스퍼터링법에 의해 차례로 적층시키므로써 형성된다.  출산 단면에서의 단면 반사율이 10%로 설정된다.  고반사 다층막은 후단면상에 Al 2 O 3 막과 a-Si막을 교대로 적층시키므로써 형성된다.  양호한 화학적 및 열적 안정성과 약품에 대한 양호한 내성을 갖는 저반사막을 출사 단면상에서 구비한 반도체 레이저 소자는 출사 단면에서 광학 손상의 발생을 억제하여 장기간에 걸쳐서 안정한 작동을 실현할 수 있다.
Patent KR-20040080685-A (KR)
Inventor: JUNG BYEONG SU
IPC: B21B31/08
Filed: 2003-03-13
Abstract: PURPOSE: A back up roll chock extraction apparatus is provided to complete replacement operation of the roll promptly and safely by automatically attaching chocks to roll and detaching the chocks from the roll. CONSTITUTION: The back up roll chock extraction apparatus is characterized in that chock extractors(5,6) for extracting top chock(2) and bottom chock(3) are arranged at both sides centering around a back up roll rotation skid unit(4) fixed to the bottom surface in such a way that the chock extractors are moved back and forth by main hydraulic cylinder(8) on slide rails(7), and a "V" character shaped groove on which a roll(1) is rested, a pad(11) formed of polyurethane, a projection(9) for preventing secession of the rested roll and rotation rolls(10) capable of rotating the roll are installed on an upper surface of the back up roll rotation skid, wherein the rotation rolls are driven by driving motor(16) installed at lift arm(12) and electric powered chain(15) connected to speed reducer(13), and a drive motor(14) capable of moving up and down the back up roll rotation skid unit is installed at one side of the lift arm.