baber/WOPTO huggingface dataset:
Patent KR-890002776-B1 (KR)
Title: Process for the preparation of solid fuel using peat as raw material
Inventor: CHOI LEE-RAN
IPC: C10F7/06
Filed: 1986-02-20
Granted: 1989-07-28
Abstract: A process for prepg. solid fuel comprises (1) dehydrating peat to below 15% water content; (2) crushing to below 0.5-1 mm for the prepn. of pellet or briquet; (3) for physical/chemical treatment, passing raw material through a vapor stream (100-120 deg.C) of ammonia for 1-5 sec to increase strength and vol. sp. gr.; (4) adding as binders rosin (less than 10 wt.%), bunker C oil (less than 20 wt.%), high quality anthracite (less than 50 wt.%); and (5) compressing for finishing.
Patent KR-890002410-B1 (KR)
Title: Receiving method of glycerin
Inventor: KIM HYUN-O
IPC: C11D19/00
Filed: 1986-03-26
Granted: 1989-07-03
Abstract: High concn. glycerin is recovered from waste soln. (produced from mafg. soap in salting-out method).  A method comprises (i) 1st saponification (SAP), (ii) 2nd SAP using the waste soln. from the 1st salting-out as the 2nd SAP water, and (iv) 3nd SAP using the waste soln. after the 2nd salting-out as the 3rd SAP water. The steps of the process are repeated until the concentration of glycerin in the waste soln. reaches high enough in degree to recover glycerin for reuse.
Patent KR-890004024-B1 (KR)
Inventor: HUJIMURA DATSUHITO
IPC: C12N5/04
Filed: 1986-05-20
Granted: 1989-10-16
Abstract: 내용 없음.
Patent KR-920000800-B1 (KR)
Title: Rubber blends
Inventor: CORAN WEBERT Y
IPC: C08L101/00
Filed: 1986-12-24
Granted: 1992-01-23
Abstract: Blends are disclosed of monoolefin rubber with high-diene hydrocarbon rubber in which the monoolefin rubber is in the form of discrete vulcanized particles dispersed in a matrix of unvulcanized high-diene hydrocarbon rubber. The blends can be easily processed, and in a subsequent step, the high-diene hydrocarbon portion cured to give rubber articles having the ozone resistance of the monoolefin rubber and the good physical properties of the high-diene hydrocarbon rubber.
Patent KR-900007039-B1 (KR)
Title: Selecting produce circuit for recording/reproducing device
Inventor: SUH JUNG-HUN
IPC: G11B15/087
Filed: 1986-12-30
Granted: 1990-09-27
Abstract: The circuit is for skipping the non-desired part of the tape and replaying only the desired part. The skip signal is recorded on the control track of the tape. The skip signal is detected at a skip signal detector (4) providing the skip request signal to a controller (1-1). The controller switches the tape driver to fast mode. When the tape reaches to next music begining part, the music begining detector (1-3) recognise it and the controller switches the tape driver to normal mode to replay the desired part.
Patent KR-950001044-B1 (KR)
Inventor: KIMURA FUMIO
IPC: C07D521/00
Filed: 1987-02-06
Granted: 1995-02-08
Abstract: 내용없음.
Patent KR-890003752-B1 (KR)
Title: Key and light emitting diode control devices and method of key system
Inventor: KIM YANG-SUN
IPC: G06F3/02
Filed: 1987-03-31
Granted: 1989-10-04
Abstract: The circuit for using common controll port of the key and LED to increase the number of key and LED in the key system without changing the peripheral circuit comprises an one-chip microprocessor (10), a transistor array circuit 920) for receiving the scanning signal through the common port, a LED driving circuit (30) for driving the LED with a driving signal from the microprocessor, a LED matrix circuit (40) for displaying the LED with the control signal of the array circuit, a switching circuit (50) for protecting the current flowing to the key while driving the LED, and a key matrix (60) for providing the control signal to the microprocessor.
Patent KR-910006853-B1 (KR)
Inventor: GERHARD HELMUT
IPC: B65D88/12
Filed: 1987-06-04
Granted: 1991-09-07
Abstract: 내용 없음.
Patent KR-950013769-B1 (KR)
Inventor: COLLE ROBERTO
IPC: C07D319/06
Filed: 1987-07-21
Granted: 1995-11-15
Abstract: 내용 없음.
Patent KR-900002057-B1 (KR)
Title: 5-hydroxa pyrazole derivatives having pysiological active property
Inventor: KWANG KI-JUN
IPC: C07D231/22
Filed: 1987-09-25
Granted: 1990-03-31
Abstract: R1=H, halogen; R2=lower alkyl; R3=alkoxy, lower alkylthio, phenoxy, halogen-, nitrosubstd. phenoxy, thiophenoxy; R4=H, lower alkyl, substd.  phenyl; X=O,S) to prevent rice insect and acarid are prepd.  Thus 1.0g 1-methyl-3-trifloro methyl-5-hydroxy pyrazole, 1.24g diethyl chlorophosphate and 0.72g triethyl amine in 10ml methylene chloride are stirred for 2 hr.  The reactant are filtered with the mixt. of hexane and ethyl acetate (4:1) to give 1.6g I (R1=H; R2=Et; R3=OET; R4=Me; X=O).
Patent KR-910002189-B1 (KR)
Title: Dehydration control system
Inventor: NAM SANG-SON
IPC: D06F33/02
Filed: 1987-11-24
Granted: 1991-04-06
Abstract: A washing machine has a dehydration control circuit to detect the pressure of water running against the water tank  and   decide the optimum  dehydration  condition.  The  circuit  comprises   a pressure sensor (1), a first  amplifier  (2)  for  amplifying  the output  signal  of  the  pressure  sensor,  a  compartor  (3)  for comparing the output  of  the  first  amplifier  and  a  reference voltage,  a  rectifier  (4)  for  rectifying  he  output  of   the comparator, a second amplifier (5) for producing a low  signal  in case that the rectified voltage is  higher  than  a  predetermined voltage, and a controller (6) for controlling  a  motor  (7).  The motor stops driving in case of a low signal.
Patent KR-930011952-B1 (KR)
Inventor: FUJIWARA HARUYOSHI
IPC: B41J27/04
Filed: 1987-11-28
Granted: 1993-12-22
Abstract: 내용 없음.
Patent KR-900006231-B1 (KR)
Title: Process for preparing 9-hydrroxy-ellipticine glycosides
Inventor: TATASHI HONTA
IPC: C07H19/23
Filed: 1988-02-29
Granted: 1990-08-27
Abstract: 9-Hydroxyellipticine glycoside of formula (I) is prepd. by heating ellipticine glycoside deriv. of formula (II) with conc. hydrobromic acid aq. soln. for acidolysis. In the formulas, A is aldose residue or deoxyaldose residue; bond denoted by N(+)-A is glycoside bond of 2-N of ellipticine and 1-C atom of sugar; R1 is C1-3  alkyl or benzyl; B is acylated aldose residue where H atom of hydroxy gp. of sugar is substd. with C2-9 acyl, benzylated aldose residue where H atom of hydroxyl gp. of sugar is substd. with benzyl or acylated deoxyaldose residue where H atoms of hydroxy gp. of sugar are substd. with C2-9 acyl. (I) may be used as carcinostatic.
Patent KR-910000592-B1 (KR)
Title: Interfacing device for printing teletext
Inventor: LEE TAE-SUNG
IPC: G06K15/00
Filed: 1988-04-07
Granted: 1991-01-26
Abstract: The circuit interfaces between the printer  and  the  monitor screen showing the digital teletext contents. The teletext  signal is provided to an teletext image processor  (11)  through  a  data processor (10). The processed digital data is provided  to  a  CRT controller (12) storing the data to a RAM (13) sequentially  under control of a microprocessor (2).  The  controller  (12)  generates analog colour signals (R,G,B) from the stored data synchronised to the  horizontal  and  vertical  synchronous  signals.  The  colour signals are provided to a colour signal voltage switching  circuit (8) to select the television or teletext screen. When printing the teletext screen, the microprocessor reads the data stored  in  the RAM sequentially and sends them to a printer through  a  connector (15).
Patent KR-960003148-B1 (KR)
Inventor: IIDA YASUSHIGE
IPC: B01D53/04
Filed: 1988-04-21
Granted: 1996-03-05
Abstract: 내용 없음.
Patent KR-900004908-B1 (KR)
Title: Alpha-(hydroxy) -1,3-oxathiolune derivatives and their preparation
Inventor: LEE HWA-SEOK
IPC: C07D327/04
Filed: 1988-06-02
Granted: 1990-07-09
Abstract: A method for preparing alpha-(hydroxy)-1,3-oxathiolane derivs. of formual (I) comprises, (a) reacting alphahaloacetic acid with metal salts of acetic acid or tetraalkylammonium acetate in organic solvent to form alpha-acetoxyacetoacetic acid derivs. (III); (b) reacting (III) with 2-mercaptoethanol in the presence of acid catalyst to form a cpd. of formula (II); (c) hydrolyzing the cpd. of formula (II). In the formulas, R= methoxy or phenylamino gp.. (I) are useful as intermediates in the prodn.  of agricultural chemicals and medicines.
Patent KR-960013844-B1 (KR)
Inventor: NAKAGOME YOSHINOBU
IPC: G11C7/10
Filed: 1988-06-07
Granted: 1996-10-10
Abstract: 내용 없음.
Patent KR-910010229-B1 (KR)
Title: Picture data circuit for fax
Inventor: KIM JIN-HYUNG
IPC: H04N1/393
Filed: 1988-06-30
Granted: 1991-12-21
Abstract: The circuit for  reducing  the  image  document  data  for  a facsimile  in  the  method  of  hardware  processing  by  using  a microprocess or control system comprises a central processing unit (10), a data input unit (20) for converting a parallel image  data into a serial image data, a data control  unit  (30)  for  storing reduction  ratio  patterns,  for  accessing  the  reduction  ratio pattern data and for outputting a reduction ratio pattern data and for outputting a reduction control signal, a data  reduction  unit (40) for receiving the serial image data to  reduce  the  received data according to the reduction control signal, and a data  output unit (50) for converting the serial data into a parallel data  and for generating a data output request signal.
Patent KR-970000650-B1 (KR)
Inventor: WOOD THOMAS E
IPC: H01L21/768
Filed: 1988-07-01
Granted: 1997-01-16
Abstract: 내용 없음.
Patent KR-930006195-B1 (KR)
Inventor: FODOR TAMAS
IPC: C07C233/01
Filed: 1988-09-24
Granted: 1993-07-08
Abstract: 내용 없음.
Patent KR-930001082-B1 (KR)
Title: Device for administering an active agent to the skin or mucosa
Inventor: CHANG YUNIK
IPC: A61M35/00
Filed: 1988-11-08
Granted: 1993-02-15
Abstract: A transdermal drug delivery device comprising a drug formulation-containing reservoir (13) defined by a backing layer (12) and a drug-permeable membrane layer (16), a peelable inner liner (20) that underlies the reservoir and a portion of the backing/membrane outwardly of the reservoir periphery, an adhesive layer (15) that underlies the inner liner and outwardly extending portions of the membrane/backing layers, and a peelable release liner layer (17) that underlies the adhesive layer with a first permanent heat seal (18) between the backing and the membrane about the perimeter of the reservoir and another concentric peelable (impermanent) heat seal (19) between the backing and the inner liner positioned outwardly of the first heat seal, the heat seals providing barriers that isolate the drug formulation from the adhesive.
Patent KR-910006426-B1 (KR)
Inventor: CAMISA JOHN D
IPC: D04H1/26
Filed: 1989-02-04
Granted: 1991-08-24
Abstract: 내용 없음.
Patent KR-0121181-B1 (KR)
Title: High speed sens-amp for dram
Inventor: KIM JOO-HAN
IPC: G11C11/40
Filed: 1989-02-28
Granted: 1997-11-10
Abstract: A high-speed sense amplifier of DRAM commonly uses PMOS sense amplifier about two memory cell groups, reduces an amplification time after sensing, reduces a chip area, considers a cell leakage current by using a dummy cell, and thus achieves accurate sensing function. The high-speed sense amplifier of DRAM includes: NMOS sensors(51,55,58) and PMOS sensor(54), which control each MOS transistors(M31,M32,M37,M38,M41,M42,M50,M51) by precharge voltages(30,36,40,48), and sense/amplify a potential of bit lines(N31-M36); memory cells(52,57) for driving each MOS transistors(M33,M34,M48,M49) by word lines(32,46,47), and storing the data of the bit lines(N31-N36) into capacitors(C31,32,37,38); dummy cells(53,56) for driving capacitors(C33,C34,C35,C36) by word lines(33,34,44,45), and controlling a delay time of the memory cells(52,57); MOS transistors(M35,M36,M46,M47) for being driven by equalizer signals(35,43), and equalizing the data of the bit lines(N31-N36); MOS transistors(M39-M40) for being driven by a precharge voltage(37), and transmitting a data of the bit ines(N31-N36) through the input/output lines(38,39); and MOS transistors(M43-M45) for being driven by a precharge voltage(48), and applying data of the bit lines(N31-N36) to input/output line(41).
Patent KR-920006921-B1 (KR)
Inventor: DAKAHASHI SHINSUKE
IPC: F02D41/04
Filed: 1989-03-08
Granted: 1992-08-22
Abstract: 내용 없음.
Patent KR-970007565-B1 (KR)
Inventor: KRAUS WAYNE-ARMOND
IPC: C08G18/24
Filed: 1989-03-23
Granted: 1997-05-10
Abstract: 내용없음.
Patent KR-930006218-B1 (KR)
Inventor: ITO KENICHIRO
IPC: F16D41/10
Filed: 1989-06-08
Granted: 1993-07-09
Abstract: 내용 없음
Patent KR-920006796-B1 (KR)
Title: Seeder and seeding method by thereof
Inventor: JONG BOM-MO
IPC: A01C7/00
Filed: 1989-11-06
Granted: 1992-08-20
Abstract: The seeding machine is basically framed of the front and rear frames (11F,11B) and the  left  and  right  frames  (11L,11R)  and includes a ditch digger (20), a seed sower (30),  a  soil  coverer (40), a soil hardener (50),  etc.  The  seeding  machine  is  also attached with a seeding valve (342) being fixed with a pin (8);  a seed sowing adjuster (38); the frontend of a  plate  (22)  of  the ditch digger (22) being attached with a circle arc  shaped  plate. The rotating wheels drive the ditch digger to  dig  for  the  seed sower to discharge seeds at constant intervals and spaces.
Patent KR-930003192-B1 (KR)
Inventor: KAWASHITA ASAYOSHI
IPC: G11B19/00
Filed: 1989-11-21
Granted: 1993-04-23
Abstract: 내용 없음.
Patent KR-0148681-B1 (KR)
Title: Method for solubilization and naturation of somatotropin
Inventor: MCCOY KEVIN MICHAEL
IPC: C07K14/61
Filed: 1989-12-15
Granted: 1998-08-01
Abstract: A method for solubilization and naturation of somatotropin using an aqueous alkaline solution results in lower dimer formation and eliminates denaturants and separate renaturation steps and agents.
Patent KR-920005128-B1 (KR)
Inventor: PARK KI-SONG
IPC: H01L21/335
Filed: 1989-12-27
Granted: 1992-06-26
Abstract: 내용 없음.
Patent KR-920009896-B1 (KR)
Title: Ga-as fet and its manufacturing method
Inventor: NAM CHUN-U
IPC: H01L29/80
Filed: 1989-12-31
Granted: 1992-11-05
Abstract: The method for mfg. a  GaAs  field  effect  transistor  (FET) comprises (a) forming a  first  epitaxial  layer  doped  with  low density P-impurities on the semi-insulating substrate, (b) forming a  projection   part-formed   buffer   layer   on    the     gate electrode-forming zone by etching the epitaxial layer, (c) forming an second epitaxial layer doped with high density N-impurities  on the projection part, (d) forming the contact layer on  both  sides of the projection part by etching the epitaxial layer, (e) forming a third epitaxial layer doped with N-impurities on the  projection part, (f) forming an activating layer on the part by  etching  the epitaxial layer, and (g) forming an electrode on the contact layer and the activating layer. The GaAs FET can  improve  a  low  noise characteristic.
Patent KR-920001067-B1 (KR)
Inventor: KLAYMAN ARNOLD I
IPC: H04R1/34
Filed: 1988-07-15
Granted: 1992-02-01
Abstract: 내용 없음.
Patent KR-950003761-B1 (KR)
Inventor: PLOHBERGER DIETHARD
IPC: F02D7/02
Filed: 1988-08-09
Granted: 1995-04-18
Abstract: 내용 없음.
Patent KR-0157629-B1 (KR)
Inventor: TAKAMUKI YASUHIKO
IPC: G03C1/85
Filed: 1990-02-22
Granted: 1999-02-18
Abstract: 내용없음.
Patent KR-920003982-B1 (KR)
Inventor: SETOGUCHI SHINRO
IPC: C07D311/22
Filed: 1990-03-03
Granted: 1992-05-21
Abstract: 내용 없음.
Patent KR-930003870-B1 (KR)
Title: Tracking device of optical head
Inventor: LEE HONG-BAEK
IPC: G11B7/13
Filed: 1990-04-09
Granted: 1993-05-14
Abstract: The apparatus enhances the tracking stability  of  an  object lens against external disturbances, and  minimizes  the  vibration and tracking error by equipping optical sensors in an aperture  of the object lens for measuring the optical quantity.  The  tracking apparatus comprises the  optical  sensors  (31,32)  detecting  the laser  beam  reflected  by  a  beam  splitter,  compensating   the displacement according to the tracking for the detected value, and converting the  compensated  signal  into  the  electrical  signal according to an incidence area; an object lens  position  detector (40) transmitting the  electrical  signal  to  a  tracking  signal generator.
Patent KR-0133939-B1 (KR)
Inventor: UCHIMI KAZUHIRO
IPC: F02P7/077
Filed: 1990-04-12
Granted: 1998-04-21
Abstract: 본 발명은 점화타이밍 제어시스템에 관한 것으로서, 특히 전자배전기를 가지는 점화타이밍 제어시스템에 관한 것이다. 그 목적은 백업용 신호발생수단 없이 mark 신호가 이상으로 될 때에도 점화제어를  할 수 있는 점화타이밍 제어시스템을 제공하는 데에 있다. 그 특징은 n회 회전하는 시간 동안 소정의 크랭크 각의  간격에서 제1신호를 발생하는 제1신호발생수단과, 엔진이 n회 회전하는 시간 동안 실린더의 대응하는 실질적으로 동일한 각의 간격에서 제2신호를 발생하는 제2신호발생수단을 구비하되, 이 경우에 있어서 적어도 이들 신호의 하나는 다른 신호에 비하여 특정될 수 있으며, 또한 제1신호발생수단의 비정상상태를 검출할 때 제1신호발생수단을 대신해서 제2신호발생수단에 근거하여 점화장치에 점화신호를 분배하는 수단을 구비함으로써 달성될 수 있다.
Patent KR-0171893-B1 (KR)
Inventor: HARRIS ADRIAN L
IPC: A61K31/7028
Filed: 1990-08-22
Granted: 1999-02-01
Abstract: 내용없음.
Patent KR-930008587-B1 (KR)
Title: Method for fabricatring high resistance in the sram cell
Inventor: DO IK-SU
IPC: H01L27/11
Filed: 1990-11-13
Granted: 1993-09-09
Abstract: A high  resistance  in  an  SRAM  cell  is  prepared  by  (A) depositing a non-doped polysilicon (3) on a silicon oxide film (2) formed on a substrate (1), (B) depositing a silicon  nitride  film (4)  to  maintain  a  resistivity  constant   on   the   non-doped polysilicon (3), (C) patterning to a resistance, (D) oxidizing the non-doped  polysilicon  (3),  and  (E)  eliminating  the  oxidized portion of the polysilicon. In the oxidation process the width  of polysilicon reduces because the silicon nitride film  (4)  is  not oxidized and an edge part is oxidized.
Patent KR-100209593-B1 (KR)
Inventor: CHO BOK-RYONG
IPC: H01L21/00
Filed: 1991-01-10
Granted: 1999-07-15
Abstract: 본 발명은 셀로우 정션을 형성하기에 적당하도록 한 반도체 제조방법에 관한 것으로, 기판위에 초기산화막을 형성하고 제1폴리실리콘을 형성하여 패터닝하므로 트랜지스터의 게이트를 형성하는 공정과, 제1CVD산화막을 형성하고 RIE 에치 방법에 의해 스페이서를 형성하는 공정과, 선택적으로 제2폴리실리콘을 형성하고 비소 이온을 주입하는 공정과, 어닐링을 실시하여 기판내에 셀로우 정션이 형성되게 하는 공정과, 제2CVD산화막을 형성하고 콘택홀을 형성하여 메탈을 디포지션하는 공정을 차례로 실시하여서 이루어진다.
Patent KR-950012029-B1 (KR)
Title: Capacitor of semiconductor memory device manufacturing process
Inventor: KANG DAE-KWAN
IPC: H01L27/04
Filed: 1991-01-16
Granted: 1995-10-13
Abstract: The method consists of a step of forming a field oxidation layer, a gate, and source/drain regions on the semiconductor substrate, forming a contact opening by selective etching, forming a bit line, and forming a contact opening by selectively etching an oxidation layer sequentially, a step of depositing the first polysilicon on the surface and etching the some parts of the first polysilicon on the field oxidation layer, a step of a number of polymide cylinder between the some parts of the upper parts of bit lines and the upper gate part of the field oxidation layer, and a step of forming a dielectric layer, a plate, an oxidation layer, and a protective layer after removing the polymide.
Patent KR-960005142-B1 (KR)
Title: Therapeutic transdermal system containing tulobuterol as the active ingredient
Inventor: HANS-RAINER HOFFMANN
IPC: A61P11/00
Filed: 1991-01-25
Granted: 1996-04-22
Abstract: The invention relates to a transdermal therapeutic system containing tulobuterol or one of its pharmaceutically compatible salts as active ingredient, comprising a backing layer which is essentially impermeable to active ingredient, and at least one matrix layer which contains the active ingredient and contains at least one styrene/1,3-diene/styrene block copolymer, and to a process for the production thereof.
Patent KR-0170399-B1 (KR)
Inventor: UENISHI KAZUYA
IPC: C07C309/76
Filed: 1991-02-01
Granted: 1999-03-20
Abstract: 폴리히드록시 화합물과 (a) 1,2-나프토퀴논디아지도-5-(및/또는 -4-)설폰닐 클로라이드의 반응에 의해 얻어진 감광물질과 알카리 용해수지를 포함하되 상기의 감광물질이 하기의 감광화합물 (1)-(3)의 혼합물인 감광조성물이 기술되는데, 그 화합물은 : (1) 분자당 적어도 하나의 히드록실기를 갖으며 3-20의 범위내에서 히드록실기에 대한 1,2-나프토퀴논디아지도-5-(및/또는 -4-)설폰닐 클로라이드 설폰산염기의 번호비를 갖으며 50중량 ％이상의 양으로 감광물질에 포함된 감광화합물; (2) 폴리히드록시 화합물에서의 히드록실기가 1,2-나프토퀴논디아지도 설폰닐 에스테르화된 경우 30중량 ％-0중량 ％의 양으로 감광물질에 포함된 감광화합물; 및 (3) 분자당 1,2-나프토퀴논디아지도 설폰닐 에스테르화 되지않은 3개 이상의 히드록실기를 갖으며 20중량 ％-0중량 ％의 양으로 감광물질에 포함된 감광화합물이다. 
     이 조성물은 g-레이, i-레이, 엑스사이머 레이저로 노출되어 예리한 감광막 이미지를 제공하는데 적합하다. 또한 감광조성물은 고감광도, 고분해능, 정밀 재생도를 갖으므로 양호한 단면형상, 넓은 현상폭, 고내열, 및 양호한 저장안정도를 갖는 감광막 이미지를 제공한다.
Patent KR-930005013-B1 (KR)
Inventor: TANAKA TADASHI
IPC: C25D17/00
Filed: 1990-03-15
Granted: 1993-06-11
Abstract: 내용 없음.
Patent KR-940008151-B1 (KR)
Inventor: NODA TSUKIO
IPC: H04N7/30
Filed: 1991-03-16
Granted: 1994-09-03
Abstract: 내용 없음.
Patent KR-910008475-B1 (KR)
Inventor: HUGIDA TOSIO
IPC: C05G5/00
Filed: 1991-03-23
Granted: 1991-10-18
Abstract: 내용 없음.
Patent KR-930010402-B1 (KR)
Title: Manufacturing method of semiconductor device
Inventor: KIM BYONG-RYOL
IPC: H01L21/31
Filed: 1991-06-25
Granted: 1993-10-23
Abstract: The semiconductor device is prepared  by  forming  1st  oxide film and nitride film in order on a substrate, selectively etching the nitride film and forming an  open  part  to  define  isolating area, implanting nitrogen ion one or more times through  the  open part until the limited concentration, forming 2nd  oxide  film  on the displayed 1st oxide film  and  nitride  film  by  CVD  method, forming oxide film spacer around the open part by  dry  anisotropy etching and forming 0.1-0.4 μm  groove  concurrently,  selectively forming a field oxide film by dry oxidizing at  high  temperature, removing the nitride film and 1st oxide film.
Patent KR-940004040-B1 (KR)
Title: Load testing circuit of induction heating cooker
Inventor: LEE MIN-KI
IPC: H05B6/12
Filed: 1991-10-24
Granted: 1994-05-11
Abstract: The load detection circuit drives an induction heating cooker at one milisecond after the zero-crossing of input power so that a starting circuit is ignited under the stable condition. The circuit includes a comparator (CP1) for comparing output voltage level of an input current detector to a reference voltage, a bridge diode (BD2) for rectifying input AC voltage, a zero-crossing detector (8) for detecting zero-crossing of input voltage, a delay (9) for delaying zero-crossing detection signal of the zero-crossing detector, a starter (3) for generating system start signal when output signals of the comparator and the delay (9) are all high.
Patent KR-970000708-B1 (KR)
Inventor: DOYOKAWA HUMITOSHI
IPC: C23C16/56
Filed: 1991-10-29
Granted: 1997-01-18
Abstract: 내용 없음.
Patent KR-100232760-B1 (KR)
Inventor: KAHIBARA TODASHI
IPC: B27B5/20
Filed: 1991-11-18
Granted: 1999-12-01
Abstract: 본 발명은 회전톱에 의하여 안전하게 도중 정지하는 일없이 연속적으로 판재의 절단을 행할 수 있는 제재용 가로켜기 톱을 얻는 것을 목적으로 한다. 
     기틀의 상부에 판재 지지면을 지니고, 이 지지면에 회전톱통과 홈을 형성하고, 이 홈의 바로 아래에 이 홈과 평행인 가이드를 설정하고, 이 가이드에 따라서 왕복 접동이 가능한 지지대상에 승강대를 지지하고, 이 승강대에 상기 회전톱을 축지하고, 상기 지지대의 왕복접동용 체인과 상기 승강대의 승강용 와이어 로프를 갖추고, 이 승강용 와이어 로프의 정역 견인에 의한 승강대의 승강기구와 왕복 접동용 체인의 정역 견인에 의한 상기 지지대의 왕복 접동기구와를 갖추고, 또 상기 와이어 로프에 피절단 판재의 상면 홈형 압압부의 기단부를 지지하여 구성되고, 상기 승강용 와이어 로프의 독립 정역 견인에 의하여 승강대를 승강 동작하고, 상기 접동용 체인의 정역 견인은 상기 독립 정역 견인과의 연동 구동기구에 의한 것인 제재용 가로켜기 톱이다.
Patent KR-950014838-B1 (KR)
Title: Optical recording medium
Inventor: LEE DONG-CHAL
IPC: G11B7/2433
Filed: 1991-12-05
Granted: 1995-12-15
Abstract: The optical recording medium is characterized in that a gold or an aluminium layer of 300-1000∦ in depth, a tartar layer of 500-2000∦ in depth and a thermal conduction suppressing layer of 500-4000∦ in depth made of bismuth are formed on a substrate, the gold or aluminium layer is an optical reflection material and the tartar layer is an optical reaction material.
Patent KR-950001298-B1 (KR)
Title: Manufacturing method of wire bonding pad
Inventor: KIL MYONG-KUN
IPC: H01L21/60
Filed: 1991-12-14
Granted: 1995-02-15
Abstract: The method includes the steps of depositing a passivation film (6) on metallic wirings (5A) formed on the silicon substrate (4), coating a photosensitive polyimide film (7) thereon to soft-harden the film (7) by prebaking, exposing the film (7) by a wire bonding pad mask and an exposure apparatus to form a photo sensistive polyimide pattern (7A), hardening the pattern (7A) by hard-baking, and etching the exposed passivation film (6) to form a wire bonding pad portion, thereby forming a wire bonding pad without an extra photosensitive film to reduce the number of processes.