baber/WOPTO huggingface dataset:
Patent KR-900000526-B1 (KR)
Title: Solar water heater
Inventor: YONAHARA YOSHIHIRO
IPC: F24S10/50
Filed: 1984-11-23
Granted: 1990-01-31
Abstract: The flat flexible plastic bag (2) is adapted to receive liquid via an inlet/outlet duct (6) or with inlet and outlet ducts (6).  The bag is secured to and carried by a support frame (3) extending around the peripheral edge.  A valve controls water inlet to the bag in response to bag defelction.  An air chamber or chambers may be separated from the liquid chamber in the bag.  The bag comprises at least one flexible transparent upper sheet and a lower sheet.  The upper surface of the lower sheet is black or darkly coloured.  The valve is coupled mechanically to the upper surface of the bag.
Patent KR-860002187-B1 (KR)
Title: Vertical font scan logic device
Inventor: JONG JONG-O
IPC: G06K15/00
Filed: 1984-12-31
Granted: 1986-12-24
Abstract: A vertical font scanning ligic circuit of the laser printer prints characters, of variable sizes, repeatedly in a line. This circuit discriminates whether the signal(DH1) indicating the characters in a line have normal or large sizes with a vertical length two times greater than the horizontal one, and the signal (DH) indicating whether the selected character has a normal or large size. The circuit provides the corresponding print singnal to the printing mechanism of the printer.
Patent KR-920004507-B1 (KR)
Inventor: NAKANO SOTA
IPC: C04B24/24
Filed: 1985-04-30
Granted: 1992-06-08
Abstract: 내용 없음.
Patent KR-880001368-B1 (KR)
Title: Interface circuit for digital audio equipment
Inventor: KIM YONG-SOK
IPC: H03K9/00
Filed: 1985-05-20
Granted: 1988-07-28
Abstract: A demodulation interface circuit constructed in multistages is for matching the starting points of record and reproduction. Each circuit comprises a synchronizing detector, a register, a memory buffer, and a second buffer.  The corrected outputs of each second buffer are provided to a register through an EPROM.  The memory buffer comprises a DEMUX (11) in which a data signal is read or written alternately to a RAM1 (12) and RAM2(13), MUXs (17,18) providing outputs of a 14 bit counter (14) and a 16 bit counter (16) to the RAM1, RAM2 as addressing pulses, and a MUX (15) receiving outputs of the RAM1, RAM2.
Patent KR-900001705-B1 (KR)
Title: Color crt
Inventor: YAMAJAKI HIDEDOSI
IPC: H01J29/07
Filed: 1985-12-07
Granted: 1990-03-19
Abstract: A shadow mask structure, for use in a colour picture cathode ray tube, comprises a shadow mask which has a main surface having a plurality of apertures and a skirt portion bent away from the main surface and a frame supporting the skirt portion of the shadow mask, the frame being formed of a metal having a greater coefficient of thermal expansion than that of the shadow mask, and the skirt portion of the shadow mask being welded to the frame at a plurality of points, and is characterised in that the shadow mask is such that at least at the points where it is welded to the inner wall of the frame, the skirt portion is to receive compressive stress towards the center of the shadow mask structure.
Patent KR-870001447-B1 (KR)
Title: Nonwoven fabric's making method
Inventor: AN SANG-YONG
IPC: D04H1/22
Filed: 1985-12-21
Granted: 1987-08-06
Abstract: A non-wooven fabric is manufactured by heat treatment of webs.  The web consists of blended yarn and polyester yarn.  The blended yarn consists of the core element made of resin having high melting-point, and the sheath element made of resin having low melting-point.  The web is passed through a heating chamber in which carrier iron plates having a number of holes for passing hot air are placed to carry the web.  The pressure of the bottom part of the chamber is lower than that of the upper one so as to induce the flow of the hot air, of which temperature is slightly higher than the melting point of the sheath resin.  Thus the web is fused to form a lamina.
Patent KR-870001446-B1 (KR)
Title: Knitted fabric's fashioning making method
Inventor: PARK I-BAE
IPC: D04B1/18
Filed: 1985-12-31
Granted: 1987-08-06
Abstract: A knitting machine has one-fold and two-fold knittingneedles. The needles are aligned in a way of one-fold knitting needle after three two-fold knitting needles.  Fiteen yarn feeders out of 21 supply two kinds of yarns such as a spun yarn for the surfaceside of the fabric and a spandex yarn for the bottom-side of the fabric.  The projective part is knitted with polyester or nylon finishede yarn, the tucking part with spun yarns, and the ground part with spun and spandex yarn.
Patent KR-910008100-B1 (KR)
Inventor: DODA HARUKI
IPC: G11C11/401
Filed: 1986-02-28
Granted: 1991-10-07
Abstract: 내용 없음.
Patent KR-890004096-B1 (KR)
Title: Automatic selective repeated apparatus of cassette
Inventor: YOON MAN-HUI
IPC: G11B23/18
Filed: 1986-04-04
Granted: 1989-10-20
Abstract: The apparatus for iterative reproducing of particular sentence includes an audio detector having two audio level sensor (IC1, IC2) for transmitting clock pulses at starting and ending of sentence during reproduction or roll-back mode, a memory for selecting sentence with selecting switch (S1), a memory for recording iterative frequency with switch (S2), and a sentence detector for reproducing sentence according to memoried data.
Patent KR-940002517-B1 (KR)
Inventor: KITAHARA KOICHI
IPC: G01N31/22
Filed: 1986-06-24
Granted: 1994-03-25
Abstract: 내용 없음.
Patent KR-890002061-B1 (KR)
Inventor: BEAVER RICHARD N
IPC: C25B9/19
Filed: 1985-12-13
Granted: 1989-06-15
Abstract: 내용 없음.
Patent KR-900003067-B1 (KR)
Title: Delay circuit
Inventor: MAKINO DAKASHI
IPC: G11C7/22
Filed: 1987-03-26
Granted: 1990-05-07
Abstract: The delay circuit comprises a number of clocked inverters coupled cascade form. Each clocked inverter includes a number of MOS FETs. The circuit further comprises delay time-controlling MOS FETs connected in parallel to the MOS FETs of the clocked inverters, which are controlled by clock signals. When the delay timecontrolling MOS FETs are turned on, the clocked inverters function as ordinary inverters. Conversely, when the delay time-controlling MOS FETs are turned off, the clocked inverters perform their own functions. Hence, of one of two different delay times can be selected.
Patent KR-900003443-B1 (KR)
Title: A deodorant for air and preparation method thereof
Inventor: HONG SANG-EUI
IPC: B01J20/20
Filed: 1987-04-10
Granted: 1990-05-19
Abstract: A method for prepg. deodorant comprises (a) heating active carbon (particle size: 4-12 mesh, sp. surface area of porosity: 800-1400 m2/ g) in distd. water of 1-3 hr and drying, (b) impregnating the carbon in soln. (of 10-20% NaOH (or KOH) and 1-5% ferrous sulfate) with occasionally stirring for carrying 5-20% NaOH (or KOH) and 1-5% ferrous sulfate, (c) allowing to stand for 5 day, and (d) filtering off liquor and vacuum drying.
Patent KR-890005106-B1 (KR)
Title: Arrangement for power factor regulation of induction motor
Inventor: KIM JONG-SU
IPC: H02P1/00
Filed: 1987-08-07
Granted: 1989-12-11
Abstract: The circuit for controlling the power factor with program comprises a triac (TR1), a transformer (10) stepping-down the AC input voltage, a voltage zero-cross detector (30) detecting the zero-cross of the line voltage of the transformer and providing a corresponding pulse, a current zero-cross detector (20) detecting the zero-cross of the current from a current transformer and providing a corresponding pulse, a microprocessor (60) comparing the phases of the pulses and providing the control signal, a triac driver (50) driving the triac with the control signal, an oscillator (70) providing clock signal to the  microprocessor, and a reset circuit (80) initialising the microprocessor.
Patent KR-900004278-B1 (KR)
Title: Pivotable razor cartridge with circular cam
Inventor: FERRARO FRANK A
IPC: B26B21/52
Filed: 1987-09-14
Granted: 1990-06-20
Abstract: The cartridge for a pivoting head razor comprises at least one blade having a blade edge and a cap overlaying the blade. A blade seat supports the blade and a guard bar extends outward beyond the exposed blade edge from the seat. The blade seat has a bottom profile with a rectangular perimeter. The profile includes pivotable attachments for engaging the handle positioned at or near each cartridge end. A cam is arcuate in cross-section, positioned between attachments. The cam has a single flat face with continuous outward curve defining a singla cam followed track along the entire extent of the cam. The cartridge maintains the orientation obtained during shaving after the cartridge is removed from the face due to the lack of biasing force to direct the cam back to a central position.
Patent KR-930005326-B1 (KR)
Inventor: HATAKEYAMA YOSHIHARU
IPC: B29C45/56
Filed: 1988-01-15
Granted: 1993-06-17
Abstract: 내용 없음.
Patent KR-950007582-B1 (KR)
Title: Dehusking grain
Inventor: VADNAY LASZLO
IPC: B02B3/02
Filed: 1988-09-27
Granted: 1995-07-12
Abstract: PCT No. PCT/AU88/00013 Sec. 371 Date Aug. 29, 1989 Sec. 102(e) Date Aug. 29, 1989 PCT Filed Jan. 27, 1988 PCT Pub. No. WO88/05339 PCT Pub. Date Jul. 28, 1988.A discoid element (7, 8) for a helical screw or worm arrangement comprising, on each side, identical shallow depressions (20); each depression having an open end (21) adjacent the periphery and a closed end (22) adjacent a central bore (23). The depressions (20) in one side of the discoid element are staggered with respect to those of the other side. The discoid element may also contain radial ribs (24, 25, 26, 27) constituting the sidewalls of the shallow depressions. The discoid elements may suitably be used in apparatus for dehusking grain.
Patent KR-940011680-B1 (KR)
Title: Tracking servo unbalance controller for optical disk reproductor
Inventor: KWAK KUK-YON
IPC: G11B7/09
Filed: 1989-03-22
Granted: 1994-12-23
Abstract: The regulator improves the reliability and cost reduction of the optical disc players by eliminating the tracking servo unbalance automatically. The regulator comprises a two variable gain amplifiers to convert the output current of two optical detectors to the voltage; a differential amplifier to amplify differentially the output voltage of two variable gain amplifiers; a DC meters to monitor the DC component of tracking servo errors of the differential amplifier output; a D/A converter to convert digital signals to analog signals; and an analog switch.
Patent KR-920002687-B1 (KR)
Title: Electrical charging circuit of battery of ni-cadmium
Inventor: CHEON KYEONG-YONG
IPC: H02J7/04
Filed: 1989-06-29
Granted: 1992-03-31
Abstract: The charger  includes  a  charge  voltage  supply  (201)  for providing  quick  and  rapid  charge  voltage  or  trickle  charge voltage, a battery pack (202) having a fuse (U3) between batteries to protect overcurrent, a temperature sensor (203)  for  detecting temperature of the battery pack, a battery voltage detector  (204) for detecting battery voltage, a charge checker (205) for quitting charge by checking the state of battery pack, and a charge voltage supply controller (206) for controlling  the  charge  mode  change according to output signals of the battery  voltage  detector  and the temperature sensor.
Patent KR-920008215-B1 (KR)
Inventor: MATSUDA KYOYA
IPC: G11B5/31
Filed: 1989-07-12
Granted: 1992-09-25
Abstract: 내용 없음.
Patent KR-920006312-B1 (KR)
Inventor: KAZUO BAN
IPC: G11B7/253
Filed: 1989-07-28
Granted: 1992-08-03
Abstract: 내용 없음.
Patent KR-930004372-B1 (KR)
Title: Preparation of green fluorescent
Inventor: YANG JUN-MO
IPC: C09K11/64
Filed: 1989-09-07
Granted: 1993-05-26
Abstract: b) green light- emitting fluorescent material is mfd. by (a) mixing 321.78 g Y2O3, 254.9 g Al2O3, 28.04 g Tb4O7 and 16.025-19.23 g  MgF2  as  a flux, (b) firing the mixture in the alumina crucible at  1350-1600 deg.C for 1-4 hr, (c) and cleaning the fired mixture with an  acid or alkali solution, and then drying it. The  fluorescent  material has a good current luminance-saturation property, and is  used  in the mfr. of a projection cathode ray tube.
Patent KR-0153453-B1 (KR)
Title: Apparatus for producing standard gas mixtures
Inventor: METTES JACQUES
IPC: B01F23/10
Filed: 1989-11-20
Granted: 1998-11-16
Abstract: The present invention relates to a process and an apparatus for producing standard gas mixtures for testing, calibrating, ... highly sensitive analytical instruments such as an atmospheric-pressure ionization mass spectrometer (APIMS). According to the invention, the following functions can be carried out : Introduce the gas to be analyzed in a controlled way into the analyzing device ; add to the gas to be analyzed, calibrated amounts of gaseous species in order to apply the standard addition and internal standard generation methods ; introduce a blanc or zero gas into the analyzing device ; add to the zero gas calibrated amounts of gaseous species in order to generate controlled mixtures facilititating the calibration of the analyzing device ; dilute in a controlled way the gas to be analyzed by the zero gas before introduction of the mixture into the analyzing device. This last point is particularly relevant for very polluted, or toxic and/or corrosive gases. The above functions are completed without the addition of contaminants,which is specially important when doing ultratrace level analysis.
Patent KR-0139296-B1 (KR)
Title: Chalcone derivatives and process for producing the same
Inventor: HIDETSUGU TAKAGAKI
IPC: C07D309/12
Filed: 1989-11-20
Granted: 1998-05-15
Abstract: Chalcone derivatives having at least one tetrahydropyranyloxy group is disclosed. Typically, the compounds are represented by general formula (I) <CHEM> wherein X and X min  each represent a tetrahydropyranyl group, R and R min , which are the same or different, each represent an alkyl group or a hydrogen atom, n and n min  each are an integer of from 0 to 5, m and m min  each are integers of from 0 to 5, provided that n + n min  is 1 or more, and that n + m is an integer of from 0 to 5 and n min  + m min .is an integer of from 0 to 5. Also, disclosed are processes for producing the chalcone derivatives starting from acetophenone or its derivative and benzaldehyde or its derivative at least one of which has at least one tetrahydropyranyloxy group. Further, disclosed is 2,3,4,2 min ,4 min -pentahydroxychalcone.
Patent KR-920007934-B1 (KR)
Title: Sintered alloy for valve guide & its making process
Inventor: NO YONG-KUK
IPC: C22C1/04
Filed: 1989-12-28
Granted: 1992-09-19
Abstract: A sintered body of alloy is composed of 1.7-2.0 wt.%  carbon, 1.16- 1.24  wt.%  silicon,  0.43-0.49  wt.%  manganese,  0.29  wt.% phosphorus, 0.15-0.17 wt.% chromium, 1.87-2.13 wt.% antimony,  and iron of trace amount. The used alloy is  prepared  by  (a)  adding 20-40 wt.% Fe-P,  1.0-6.0  wt.%  copper,  and  0.5-1.0  wt.%  zinc stearate as a solid lubricant, and (b) sintering  the  mixture  at 1,100-1,150 deg.C for 30 mins. - 2 hrs.
Patent KR-910010199-B1 (KR)
Inventor: NAKAMURA KOSEI
IPC: H02K15/12
Filed: 1988-06-22
Granted: 1991-12-20
Abstract: 내용 없음.
Patent KR-970011338-B1 (KR)
Inventor: REHFELD MARC
IPC: C03C27/06
Filed: 1990-03-06
Granted: 1997-07-09
Abstract: 요약없음.
Patent KR-920008259-B1 (KR)
Title: Korean language synthesizing method
Inventor: LEE YUN-KUN
IPC: G10L13/02
Filed: 1990-03-31
Granted: 1992-09-25
Abstract: The voice data is extracted from the formant information each of which is divided  to  the  linear  transition  section  of  the formant, and stored in the memory. An voice synthesiser (3)  reads the data with the dividing region unit from a ROM (4) according to the input character coming through a PC interface  (2).  The  band width and the formant  frequency  are  calculated  by  the  linear interpolation method after calculating the pitch and the energy of the read  data,  then  the  filter  is  formed  according  to  the calculated formant information. The voice signal is synthesised by the filter. The frequency, band with,  and  the  length  at  three starting points of the input character constructs the data base in the ROM (4).
Patent KR-0172600-B1 (KR)
Inventor: MESSERLY MICHAEL J
IPC: C03B37/012
Filed: 1990-07-16
Granted: 1999-05-01
Abstract: 내용없음
Patent KR-0147826-B1 (KR)
Inventor: IWAFUCHI KAZUHIKO
IPC: C23C16/46
Filed: 1990-08-07
Granted: 1998-11-02
Abstract: 내용없음.
Patent KR-0159095-B1 (KR)
Title: Benzoylguanidines, process for their preparation, their use as medicaments as well as medicament containing them
Inventor: ENGLER HEINRICH CHRISTAN
IPC: A61K31/403
Filed: 1990-09-06
Granted: 1999-01-15
Abstract: Benzoylguanidines of the formula I  (* CHEMICAL STRUCTURE *) (I) where R(1) or R(2) is equal to R(6)-S(O)n- or R(7)R(8)N-O2S- and the other substituent R(1) or R(2) is in each case equal to H, F, Cl, Br, I, alkyl, alkoxy or phenoxy, R(6)-S(O)n or R(7)R(8)N- and R(6) is equal to alkyl, cycloalkyl, cyclopentylmethyl, cyclohexylmethyl or phenyl, R(7) and R(8) are equal to alkyl or phenylalkyl or phenyl, and in which R(7) and R(8) may also together be a C4-C7 chain, and in which R(7) and R(8), together with the nitrogen atom to which they are bonded, may be a dihydroindole, tetrahydroquinoline or tetrahydroisoquinoline system, and where R(3), R(4) and R(5) are equal to hydrogen or alkyl, or R(3) and R(4) are together an alkylene chain or R(4) and R(4) are together an alkylene chain, and where n is equal to zero, 1 or 2 and their pharmaceutically tolerable salts are outstanding antiarrhythmics.
Patent KR-950009286-B1 (KR)
Inventor: KIM JUN-SHIK
IPC: H01L21/30
Filed: 1990-09-10
Granted: 1995-08-18
Abstract: 내용 없음.
Patent KR-0147282-B1 (KR)
Title: Underwater pump
Inventor: ARAKAWA SHINICHIRO
IPC: F04D29/42
Filed: 1990-09-25
Granted: 1998-08-17
Abstract: A submersible pump comprising: a discharge casing (1) open at the bottom thereof; a motor case (2) fixed inside the discharge casing (1) and containing therein a motor (3) for driving an impeller (15); a support plate (10) positioned so as to close an opening of the discharge casing (1) for supporting the motor case (2); a downwardly concaved pump casing (17) placed under the support plate for defining a pressure chamber between it and the support plate (10); and a downwardly concaved strainer (20) placed under the pump casing (17) for defining a suction chamber (19) between it and the pump casing is disclosed. In this submersible pump, the discharge casing (1) has an increased-diameter stepped flange (23) integrally formed along the periphery of the opening of the discharge casing. Within a stepped portion (23a) of the stepped flange (23) there are sequentially mounted respective peripheral portions of the support plate (10), of the pump casing, and of the strainer (20). The discharge casing (1) and the support plate (10) are fastened together by first bolts (26) vertically extending therethrough, and in that the support plate (10), the pump casing (17) and the strainer (20) are fastened together by second bolts (25) vertically extending therethrough. By this arrangement, the entire pump can be easily assembled by fastening the first (26) and second bolts (25).
Patent KR-100190722-B1 (KR)
Inventor: JANG JUN-WON
IPC: G01R31/34
Filed: 1990-12-28
Granted: 1999-06-01
Abstract: 본 발명은 서보모터 성능 시험장치에 관한 것으로서 베이스(B)상에 구동모터(3), 제 1,2 브레이크(10)(10'), 토크센서(8)(8')등을 커플링으로 연결할 수 있도록 하고, 시험항목에 따라서 이송테이블(1)을 가이드 레일(G)상에서 이송시켜 서보모터(M)의 제특성을 시험하여 처리할 수 있는 것을 특징으로 한다. 
     따라서, 본 발명의 서보모터 성능  시험장치를 이용하여 서보모터 성능을 측정하는데 최적의 수행과정과 종합적인 성능 시험이 가능하다.
Patent KR-930010287-B1 (KR)
Title: Subscriber number processing method
Inventor: BAEK MI-SUK
IPC: H04M3/22
Filed: 1990-12-31
Granted: 1993-10-16
Abstract: The method processes data related to a subscriber whose phone number is  changed.  The  method  comprises  the  steps  of:  (A) receiving charge  data  generated  by  a  charge  data  generating processor; (B) checking errors in  the  data;  (C)  sending  error message when errors  are  checked;  (D)  requesting  charge  data packing when the phone number  of  a  subscriber  is  changed  and otherwise executing normal process; (E) storing charge data  on  a disk when  a  charge data  packing  request  is  received  for  a subscriber whose phone number is changed; (F) checking  errors  in data stored on a memory and storing normal data on a disk; and (G) initializing a disk and supervising an index file.
Patent KR-920002003-B1 (KR)
Inventor: HOSOKAWA TOSHIO
IPC: A23L13/60
Filed: 1989-08-11
Granted: 1992-03-09
Abstract: 내용 없음.
Patent KR-940004272-B1 (KR)
Title: Eprom and manufacturing method thereof
Inventor: KIM HO-HYON
IPC: H01L29/788
Filed: 1991-01-18
Granted: 1994-05-19
Abstract: The method for fabricating an EPROM device includes the steps of: forming an oxide and polysilicon layer on a substrate, and forming a floating gate by patterning the oxide and polysilicon layer; forming a low temperature oxide and a nitride on the overall surface of substrate, and patterning the nitride so as to be left only on the floating gate; oxidising the low temperature oxide by LOCOS process and then removing the nitride; and forming a polysilicon layer on the low temperature oxide, and patterning the polysilicon layer so as to be left on the floating gate, thereby reducing the erase voltage of the EPROM.
Patent KR-930009140-B1 (KR)
Title: Package for eprom
Inventor: CHOE SANG-HYON
IPC: H01L27/115
Filed: 1991-02-25
Granted: 1993-09-23
Abstract: In recording or erasing data from an EPROM, through a  liquid crystalline cover part attached on the top of a  device,  data  is recorded  or  erased  by  maintaining  transparency   or   opacity according to power on or power off. The cover part is composed  of a liquid crystal cover window(3)  having  electrodes(31)  on  each side to make power on or off. The size of the  cover  part  is  at least the size of window(11). This method is proper to  automation of data recording or erasing process.
Patent KR-100188380-B1 (KR)
Inventor: MUEHLEMANN KURT
IPC: G09G3/36
Filed: 1991-05-03
Granted: 1999-06-01
Abstract: 본 발명에 따르는 레벨 시프터는 재현, 스파이크-형 신호와 결합된 입력 신호에 의해 캐패시턴스를 경유하며 제어된 또다른 트랜지스터와, 입력 신호에 의해 직접 제어된 제1트랜지스터를 갖는 출력 단을 포함한다. 그리하여 레벨 시프터는 스태틱 레벨 시프터로 작용하지만 보다 낮은 전류 소모와 보다 적은 표면 영역을 요구한다.
Patent KR-0165851-B1 (KR)
Inventor: NOZAWA TOSHIHISA
IPC: C23C14/50
Filed: 1991-07-19
Granted: 1999-02-01
Abstract: 마그네트론 플라즈마 에칭장치의 진공챔버(10)내에 웨이퍼의 지지테이블(20)이 설치되어 있다. 이 지지테이블(20)은 웨이퍼의 온도를 조절하기 위한 기구를 가지는 제1부재(22)와, 제1부재(22)의 위에 설치되고, 상면에 웨이퍼(1)를 지지하기 위한 정전척(24)이 설치된 제2부재(21)와, 제1 및 제2부재(21,22)의 사이에 가스를 도입하는 가스도입기구(25, 25a)를 구비하고 있다.
Patent KR-100240048-B1 (KR)
Inventor: SUGIMORI HIDEO
IPC: H05B39/04
Filed: 1991-08-09
Granted: 2000-01-15
Abstract: 본 발명은 정격을 초과하는 직류전압으로 하나이상의 백열전구를 시동하는데스위칭 전원회로가 이용되는 신규한 조명장치에 관한 것이다. 이 조명장치는 본 실시예의 광은 통상적으로 색온도가 2,900K 이상이고 불균형 없이 연색성에서 우수하고 눈에 우아한 자연적이어서 조명에 매우 유용하다. 
     스위칭 전원회로는 대전력 효율과 용량을 나타내고 출력전압이 바람직한 크기로 조절하여 램프를 점등한다.
Patent KR-950013400-B1 (KR)
Inventor: OGIHARA MASAKI
IPC: G11C29/04
Filed: 1991-08-20
Granted: 1995-11-08
Abstract: 내용 없음.
Patent KR-950000107-B1 (KR)
Title: Method of indirect layer alignment
Inventor: PARK DAE-YONG
IPC: H01L21/027
Filed: 1991-12-18
Granted: 1995-01-09
Abstract: The method includes the steps of aligning a second layer on the center of the first alignment pattern (4) of the basic layer to form a second alignment pattern (5) on the first alignment pattern (4), and aligning a third layer on the center of the composite alignment pattern with the patterns (4,5). The method drops the aligning rate between the first and third layers, but highly increases the aligning rate between the second and third layers, thereby improving the total aligning rate.