baber/WOPTO huggingface dataset:
Patent KR-970003735-B1 (KR)
Title: Bipolar integrated circuit manufacturing method
Inventor: LEE KYUNG-ILL
IPC: H01L29/70
Filed: 1988-12-29
Granted: 1997-03-21
Abstract: A fabrication method of bipolar IC's(Integrated Circuits) is provided to improve an reliability. The method comprises the steps of: forming an oxide layer after removing an isolation drive-in oxide; forming a base region by implanting base ions using a PR as a mask; activating the base region by base drive-in at N2 atmosphere; defining an emitter region by implanting emitter ions using a PR' as a mask: firming a field oxide by CVD(chemical vapor deposition) after removing the PR'; and simultaneously forming an emitter region and a CVD oxide layer by emitter drive-in process.
Patent KR-930011744-B1 (KR)
Inventor: BARNOACH ITZHAK
IPC: B29C48/07
Filed: 1987-10-23
Granted: 1993-12-20
Abstract: 내용 없음.
Patent KR-910008416-B1 (KR)
Title: Circuit for controlling communication among multi-processors using multiport memory
Inventor: HAN SANG-CHUN
IPC: G06F12/06
Filed: 1989-06-29
Granted: 1991-10-15
Abstract: The addresses of each processors are multiplexed so that  the multiport memory is accessed by one processor to communicate  data between a master and a slave processor.  The  circuit  includes  a first- a  fourth  multiplexer  (MUX1-MUX4)  for  multiplexing  the address and the control signal  of  the  processors,  a  multiport memory (MMR) controlled by address (A0-A1) and control  (OE,CS,WR) signals, a first and second transmission  driver  (TVR1,TVR2)  for transmitting the data transmitted from the multiport memory to the processors according to the designated directions, and a multiport memory controller (100) for generating a selection signal  of  the multiplexers and enable signal  transmitted  to  the  transmission drivers  (TVR1,TVR2),  and  for  deciding  the  data  transmission directions.
Patent KR-0133668-B1 (KR)
Title: Removal of iodine of iodide impurities
Inventor: GRACEY BENJAMIN PATRICK
IPC: C07C53/08
Filed: 1989-09-27
Granted: 1998-04-21
Abstract: A process for removing iodine or soluble iodide impurities from a carboxylic acid or carboxylic acid anhydride, the carboxylic acid or carboxylic acid anhydride having been produced by a carbonylation process, comprises step (a) treating impure carboxylic acid or carboxylic acid anhydride containing iodine or soluble iodide impurities with an unsupported scavenger at a temperature of between 20 and 250 DEG C and step (b) thereafter separating the treated carboxylic acid or carboxylic acid anhydride from the scavenger characterised in that the scavenger consists of a silver salt in the absence of a trialkyl phosphine, a triaryl phosphine and a heterocyclic aromatic nitrogen compound. The preferred scavenger for acetic acid and acetic anhydride is silver acetate.
Patent KR-970011368-B1 (KR)
Title: Cracking furnace
Inventor: NAKASE NORIAKI
IPC: C10G9/20
Filed: 1989-09-29
Granted: 1997-07-10
Abstract: A cracking furnace for thermal cracking of hydrocarbon feedstocks, capable fo reducing its length, site area, wall surface area, and the number of quenching heat exchangers installed, thereby making the apparatus compact and lightweight and reducing damage of parts due to high temperatures, which cracking furnace comprises a central burner (13) provided vertically at the centre of the ceiling of a combusion chamber (1); side burners (12) provided vertically at both sides of the central burner (13); reaction tubes (7) vertically arranged between the central burner (13) and respective side burners (12), forming arch bends at the lower part of the chamber (1), and arranged in rows along the longitudinal direction of the chamber (1), a combustion gas-inducing duct (18) provided at the bottom of the chamber (1); a quenching heat exchanger (10) provided at the upper part of the chamber (1); and a reaction tube exit heder (9) connecting a plurality of exits of the reaction tubes (7) to the quenching heat exchanger (10).
Patent KR-920005415-B1 (KR)
Title: Process for preparing alkenyl-succinic acid anhydrides
Inventor: LEE KWANG-SOB
IPC: C07D307/60
Filed: 1989-11-28
Granted: 1992-07-03
Abstract: A method for preparing alkenyl succinic anhydride useful as a sizing agent comprises (a) isomerization of  -olein by  use  of  a mixt. catalyst which containing a lewis acid  to  obtain  internal olefin, and (b) ene-reaction of the  obtd.  internal  olefin  with maleic anhydride.  The  Lewis  acid  is  selected  from  aluminium chloride, aluminium bromide, aluminium  fluoride,  iron  chloride, tungsten chloride, zinc chloride, tin chloride, gallium  chloride, diethyl aluminium chloride or diethyl  aluminium  chloride.  Pref. the mixt. catalyst contains 20-60 wt.% of a lewis acid.
Patent KR-910005190-B1 (KR)
Inventor: REDDING BRUCE K JR
IPC: B01J13/10
Filed: 1988-09-13
Granted: 1991-07-23
Abstract: 내용 없음.
Patent KR-930003725-B1 (KR)
Inventor: TOYAMA HIDEKI
IPC: H04J3/00
Filed: 1989-02-15
Granted: 1993-05-08
Abstract: 내용 없음.
Patent KR-930011088-B1 (KR)
Inventor: IKETA HIDEO
IPC: G01L3/10
Filed: 1990-04-10
Granted: 1993-11-20
Abstract: 내용 없음.
Patent KR-920007026-B1 (KR)
Title: Solenoid valve
Inventor: JONG YE-SON
IPC: B60T8/42
Filed: 1990-08-27
Granted: 1992-08-24
Abstract: The solenoid valve used in an antilocking brake system  (ABS) of   an   automobile   is   able   to   change   directions     of three- ports/three-positions.  The  solenoid   valve   includes   a cylinder (13) in it. The cylinder has both connecting ports (P)(T) for the suction hole and the  exhausting  hole  of  the  hydraulic pump. A yoke (12), producing sucking magnetic force  when  current flows in the solenoid coil (11), is placed in the central part  of the cylinder inside of the tube. The cylinder incldues  push  rods supported by springs, first and second plungers (14),  (15)  which move independently to each other by magnetic force induced at  the yoke, and first and second check valves  (16)(17)  placed  in  the connecting port (9) and the first plunger.
Patent KR-920007081-B1 (KR)
Title: Automatic image control circuit in tv
Inventor: JO SANG-HO
IPC: H04N5/44
Filed: 1990-08-31
Granted: 1992-08-24
Abstract: A  circuit  is  for  producing  the   excellent   image   by automatically controlling the distinction and  brightness  of  the television corresponding  to  the  receiving  field  strength.  An output of an AGC voltage amplifier  (24)  is  connected  with  the tuner (1) and the transistor Q1, Q2 of the gain  controller  (26). The distinction control  signal  from  a  microprocessor  (11)  is provided  to  a  high  pass  correcting  amplifier  (22)  and  the brightness control signal is  provided  to  a  contrast  amplifier (23). The microprocessor  controls  the  gain  of  the  high  pass correcting amplifier and the contrast amplifier  corresponding  to the field strength.
Patent KR-0162641-B1 (KR)
Title: N-substituted-4-pyrimidinamines and pyrimidinediamines, a process for their preparation and their pharmaceutical compositions containing them
Inventor: EFFLAND RICHARD CHARLES
IPC: C07D403/14
Filed: 1990-09-04
Granted: 1998-12-01
Abstract: This invention relates to N-heteroaryl-4-pyrimidinamines of the formula <CHEM> where R1 is hydrogen, loweralkyl, aryl, or arylloweralkyl; R2 and R3 are independently hydrogen or loweralkyl, or R2 and R3 taken together are aryl; R4 and R5 are independently hydrogen or loweralkyl, or R4 and R5 taken together are aryl; X is hydrogen, halogen, cyano, nitro, amino, loweralkyl, loweralkoxy, trifluoromethyl or <CHEM> where Y is hydrogen, halogen or loweralkyl; m is an integer of 1 to 3; and the pharmaceutically acceptable acid addition salts thereof and where applicable the geometrical and optical isomers and racemic mixtures thereof. The compounds of this invention display utility as memory enhancing agents and as analgesic agents.
Patent KR-930006918-B1 (KR)
Inventor: KANEMARU YOSHINOBU
IPC: G02B1/04
Filed: 1990-10-08
Granted: 1993-07-24
Abstract: 내용 없음.
Patent KR-940009378-B1 (KR)
Title: Mechanism for subroutine return prediction
Inventor: STEELY JR SIMON C
IPC: G06F9/42
Filed: 1990-12-17
Granted: 1994-10-07
Abstract: A method and arrangement for producing a predicted subroutine return address in response to entry of a subroutine return instruction in a computer pipeline that has a ring pointer counter and a ring buffer coupled to the ring pointer counter. The ring pointer counter contains a ring pointer that is changed when either a subroutine call instruction or return instruction enters the computer pipeline. The ring buffer has buffer locations which store a value present at its input into the buffer location pointed to by the ring pointer when a subroutine call instruction enters the pipeline. The ring buffer provides a value from the buffer location pointed to by the ring pointer when a subroutine return instruction enters the computer pipeline, this provided value being the predicted subroutine return address. <IMAGE>
Patent KR-960008637-B1 (KR)
Inventor: WEST DAVID H
IPC: C07C19/03
Filed: 1990-04-20
Granted: 1996-06-28
Abstract: 내용없음.
Patent KR-0176247-B1 (KR)
Title: Hexahydrobenz indoles & process for preparation thereof
Inventor: KRESS THOMAS J
IPC: C07D209/90
Filed: 1991-02-25
Granted: 1999-03-20
Abstract: New intermediates, and processes therefor, provide an efficient method for deriving 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indoles, which are themselves intermediates to useful CNS agents, from the Kornfeld-Woodward ketone and like compounds. Preferred embodiments provide means for the preparation of substantially pure enantiomers of the desired 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indole.
Patent KR-930004104-B1 (KR)
Title: Expansion circuit of stereo
Inventor: KIM HUI-JIN
IPC: H04S5/00
Filed: 1991-02-27
Granted: 1993-05-20
Abstract: The circuit for reproducing the surrounding effect  by  using the existing speaker comprises: a L-R comparator, which  generates the peripheral sound of stereo  R,L  signal  existing  in  cut-off signal of L-R by comparing the difference of the L signal with the R signal inputted between the amplifier and the input  circuit;  a delayer, which makes the different delay time on low  compass  and middle/high compass by obtaining  the  L-R  difference  signal;  a filter filtering the delayed time; a circuit  section  of  1K-4KHz zone for improving the surround effect  by  compensating  the  L-R difference signal; a circuit section amplifying the size of  1KHz, 8KHz frequency.
Patent KR-910008925-B1 (KR)
Inventor: INOUE MICHIHIRO
IPC: G11C11/407
Filed: 1991-05-25
Granted: 1991-10-24
Abstract: 내용 없음.
Patent KR-940000564-B1 (KR)
Inventor: TOMIKAWA FUMIO
IPC: C01B32/50
Filed: 1991-06-18
Granted: 1994-01-24
Abstract: 내용 없음.
Patent KR-940011598-B1 (KR)
Inventor: YASUKI SEIJIRO
IPC: H04N7/00
Filed: 1991-07-19
Granted: 1994-12-22
Abstract: 내용 없음.
Patent KR-930010082-B1 (KR)
Title: Making method of contact hole
Inventor: PARK CHOL-SU
IPC: H01L23/52
Filed: 1991-09-03
Granted: 1993-10-14
Abstract: The contact for LSI device is prepared by forming  a  silicon oxide film on the exposed drain  and  source  and  gate  electrode having a spacer oxide and mask oxide film, forming  and  reflowing BPSG silm thickly, cleaning it with  NH4OH,  etch-backing  thinly, reforming a thick silicon oxide film, removing the  upper  silicon oxide film of the contact area, cleaning  the  BPSG  film  of  the contact area with NH4OH, blanket etching the lower  silicon  oxide film to expose the drain, and the upper silicon oxide film  of  no contact area concurrently, depositing a bitline conductive film on all area, mask patterning the bitline connected with the drain.
Patent KR-950011013-B1 (KR)
Inventor: STIEF GEORG
IPC: A61P15/00
Filed: 1990-04-21
Granted: 1995-09-27
Abstract: 내용 없음.
Patent KR-940011350-B1 (KR)
Inventor: IWAMOTO TADASHI
IPC: G11B25/06
Filed: 1991-03-29
Granted: 1994-12-05
Abstract: 내용 없음.
Patent KR-960000690-B1 (KR)
Inventor: EMORI YASUYOSHI
IPC: B62D6/02
Filed: 1992-01-31
Granted: 1996-01-11
Abstract: 내용 없음.
Patent KR-950000794-B1 (KR)
Title: Screen-film forming method of crt
Inventor: KIM MIN-HO
IPC: H01J29/88
Filed: 1992-03-06
Granted: 1995-02-02
Abstract: The layer of fluorescent material in a fixed pattern is formed on the inner side of paste plate of a cathode ray tube. The filming liquid includes: an acrylic emulsion and a poly vinyl alcohol of 1500-1900 polymerization degree as a main component, 0.02-0.15 wt.% of ammonium chloride and 0.05-5 wt.% of ethylene glycol in relation to the whole of the composition. The filming liquid is coated on the layer of fluorescent material and preheated at 36-43 deg.C to form the filming layer. Aluminium is vaporized on the filming layer and aged at 450 deg.C.
Patent KR-950002769-B1 (KR)
Title: Method of making protective coverings for apples
Inventor: JO JUNG-YON
IPC: A01G13/02
Filed: 1992-03-11
Granted: 1995-03-27
Abstract: The preparation method for wrapping papers (I) of apple culture consists of (1) dying pulp with black pigment 5-10% and black dye 2-7% to give resistance to decolorization by light for outer wrapping, (2) dying pulp in blue or green to have 400-550 nm to repel the birds for inner wrapping, (3) adding sizing agent, stabilizing agent, binder and 0.1-0.4% of insecticide and fungicide to the dyed pulps of process (1) and (2), (4) pressing both pulps and drying to 15-20% water content, (5) treating with paraffin wax to give water repellance and adjust 40-60% the light permeability. (I) can control the temperature and humidity inside wrapping and protect pears from insect and fungi.
Patent KR-950012313-B1 (KR)
Title: Interface method between no.7 signalling isdn user part and connectionless signal connection control in the electronic swithing
Inventor: AHN KYONG-AH
IPC: H04L12/12
Filed: 1992-04-22
Granted: 1995-10-16
Abstract: selecting a connectionless SCCP signal manner and requesting the user information transmission command from an ISDN user matching part including a call number of other's part when a terminator user information transmission command is received from an ISDN user controlling part; selecting SCCP by using a junction line composed of the connectionless SCCP message from the ISDN user matching part; transmitting the message to the corresponding SCCP to avoid transmitting unnecessary data; receiving the message by the size if SCCP of a large station receives the message and transmits the message; transmitting the user information analyzed by the user, extracting the junction line number from the user information, and transmitting it to UPC; and processing the terminator user information and completing all operations by the UPC.
Patent KR-950005228-B1 (KR)
Inventor: TANAKA HIDEKATSU
IPC: G06F3/0481
Filed: 1992-05-08
Granted: 1995-05-22
Abstract: 내용 없음.
Patent KR-940007766-B1 (KR)
Title: Iced sauce for chinese fried meatball
Inventor: LEE JONG-U
IPC: A23L23/00
Filed: 1992-06-05
Granted: 1994-08-25
Abstract: The freezed sauce for sweetened pork is prepd. by (a) mixing and heating denatured starch 1-5 wt.%, starch syrup 5-15 wt.%, vinegar 2-4 wt.% and water in the mixer having a heater, (b) adding vegetables into the obtd. mixt., and (c) putting it in the inner packing material and quick-freezing to obtain the final product.
Patent KR-950011193-B1 (KR)
Title: Crime prevention and remotr check system using catv network
Inventor: PARK SONG-DOK
IPC: H04N7/10
Filed: 1992-07-25
Granted: 1995-09-29
Abstract: initiating a buffer and remote examination request data and a screen color designation value; checking an operator registration state and if an identification number of an operator corresponds to the registered data, outputting a message indicating a system operates; removing remaining remote examination request message and processing a key input by the operator; performing a request message to the registered subscriber, crime, transmission of received data from the subscriber to disaster protection computer or remote examination computer and transmission of the examination request data to the subscriber; and after storing the received data to the rest of ports of communication control port in the buffer, returning to the key input processing step.
Patent KR-940007018-B1 (KR)
Title: Compost efflux treating method and apparatus by coagulation and adsorption
Inventor: PARK WAN-CHOL
IPC: C02F11/00
Filed: 1992-10-23
Granted: 1994-08-03
Abstract: The process comprises the steps of adding a coagulator into an outflow from a compost toilet in order to separate and remove the coagulated mass precipitated as sludge; inpouring air to the coagulated material to be treated to discharge ammonia component contained into the atmosphere; neutralizing the material free from ammonia to separate and remove the precipitated salt; sequentially filtering the neutralized material through sand and activated charcoal to remove float and residual organic material and discharging the treated water; and recycling the sludge separated in the prior step and salt precipitated to compost toilet to produce compost.
Patent KR-960005763-B1 (KR)
Inventor: OKUNO SATOSHI
IPC: F23G5/20
Filed: 1992-11-05
Granted: 1996-05-01
Abstract: 내용 없음.
Patent KR-960014886-B1 (KR)
Inventor: JUDD IAN DAVID
IPC: G11B19/28
Filed: 1992-11-19
Granted: 1996-10-21
Abstract: 내용없음.
Patent KR-960001861-B1 (KR)
Title: High speed row decoder
Inventor: KIM JUNG-PHIL
IPC: G11C11/407
Filed: 1992-12-31
Granted: 1996-02-06
Abstract: The high speed X-decoder comprises a PMOS type word line driver connected between a high voltage input line and word lines, for transmitting the high voltage from the high voltage input line to the word line; a first decoder for decoding 2 less significant bits of address of the row address over at least 3 bits; a second decoder for decoding the remaining addresses except the 2 less significant bits of address; a first PMOS transistor for transmitting the high voltage from the high voltage input line to a second connecting point connected to a gate of the PMOS type word line driver according to the voltage level on a first connecting point; a second PMOS transistor for transmitting the high voltage to the first connecting point according to the voltage level on the second connecting point; a first NMOS transistor for bypassing the voltage on the first connecting point to a low voltage according to the voltage level on the second connecting point; a second NMOS transistor for bypassing the voltage on the first connecting point to the low voltage according to the logic value from the first decoder; a third NMOS transistor for changing the voltage on the second connecting point to the bulk of the second NMOS transistor according to the logic value of the second decoder; and a gate circuit for driving the PMOS type word line driver by the output signals of the first and second decoders.
Patent KR-0169328-B1 (KR)
Title: Method of manufacture of a material for osteoplasty from a natural bone tissue, and material obtained thereby
Inventor: BONIFACE ROBERT
IPC: A61F2/28
Filed: 1990-11-22
Granted: 1999-01-15
Abstract: Osteoplasty material substantially devoid of antigenic proteins, wherein the material contains a natural bone structure in which non-denatured type I collagen is integrated, is prepared by selective extraction of bone tissue of human or animal origin. The selective extractant is an aqueous solution of 2-10 molar urea, and the extraction step is conducted at preferably 10 DEG -30 DEG  C.
Patent KR-960016528-B1 (KR)
Inventor: UMECH GENJI
IPC: F04D29/66
Filed: 1993-01-15
Granted: 1996-12-14
Abstract: 요약없음
Patent KR-970002886-B1 (KR)
Inventor: MIYAZAKI SHINICHI
IPC: H03D3/24
Filed: 1993-01-27
Granted: 1997-03-12
Abstract: 내용없음
Patent KR-0168603-B1 (KR)
Inventor: HAN MIN-HYUN
IPC: C08L21/00
Filed: 1993-02-09
Granted: 1999-03-20
Abstract: 폴리사이클로옥텐으로 합성된 고무를 통상의 타이어 제조용 고무조성물에 적량 배합한 고무조성물을 가열탱크 내에서 가열하면서, 여기에 벨트 에지부를 함침하면서 통과시켜 냉각기에 급냉함으로써 벨트 에지부를 보강한 공기압 타이어의 벨트 에지부 보강 방법이다.
Patent KR-0164559-B1 (KR)
Inventor: MOON YANG-CHUN
IPC: H04N5/60
Filed: 1993-02-19
Granted: 1999-03-20
Abstract: 음성다중 시스템을 적용하는 칼라 텔레비젼 및 FM 라디오에 있어서, 
     음성다중 신호처리를 위하여는 음성다중 신호처리용 IF IC를 사용하여야 하므로 부품소자의 호환성을 떨어뜨리는 것이었다. 
     따라서 모노 사운드용으로 사용되고 있는 IF IC를 스테레오용 텔레비젼에 적용시켜 스테레오 기능을 수행시키도록 하기 위하여 SIF 복조회로(210)에서 복조된 인터 케리어 출력이 5.5㎒ 필터(130)와 5.74㎒ 필터(230)를 각각 통과한후 FM1 사운드 복조부(120)와 FM2 사운드 복조부(220)에서 사운드 신호로 복조되어 스테레오 데코더(70)에 인가되도록 구성시킨 것으로써 
     부품소자 상호간의 호환성을 증가시켜 모노 텔레비젼이나 스테레오 텔레비젼에 적용되어진다.
Patent KR-0141109-B1 (KR)
Inventor: JUNG TAE-HWA
IPC: H04N5/14
Filed: 1993-03-05
Granted: 1998-06-15
Abstract: 본 발명은 영상시스템에 있어서 양방향 전송제어가능한 영상신호 전송처리장치에 관한 것으로, 특히 복합영상신호의 소정의 영역을 이용하여 수신측에서 송신측을 제어할 수 있는 양방향 전송제저가능한 영상신호 전송처리장치에 관한 것이다. 이를 위하여 송신단은 복합영상신호로부터 동기신호를 분리하기 위한 제1 동기신호 분리수단과 제1 동기신호 분리수단에서 출력하는 수평동기신호의 주기를 계수하여 소정의 수직블랭킹영역 동안 하이레벨신호를 출력하는 제1 카원터와 제1 카운터의 출력이 로우레빌신호일때는 휘도/색조수단에서 출력하는 복합영상신호를 절환하고 제1 카운터의 출력이 하이레벨신호일때는 수신다의 제어신호를 상호 절환하는 제1 절환수단 제1 절환수단에서 절환된 제어신호를 입력으로 받아 송신단이 각 부를 제어하는 제1 제어수단을 구비하고, 수신단은 사용자 제어명령을 입력하기 위한 키입력부와 복합영상신호로부터 동기신호를 분리하기 위한 제2 동기신호 분기수단과 제2 동기신호 분리수단에서 출력하는 수평동기신호의 주기를 계수하여 소정의 수직블랭킹영역동안 하이레빌신호를 출력하는 제2 카운터와 제2 카운터의 출력이 로우레벨신호일때는 휘도/색조수단에서 출력하는 복합영상신호를 절환하여  디스플레이 장치와 접속하고, 제2 카운터의 출력이 하이레벨신호일때는 송신단을 제어하기 제어신호를 절환하여 상기 송신단과 접속하는 제2 절환수단과 수신다의 전반부를 제어하고, 키입력부로부터 입력된 사용자 제어명령을 인코딩하여 인코딩된 제어신호를 제1 절환수단으로 출력하는 제2 제어수단을 구비한다. 따라서 수신측에서도 송신측을 손쉽게 제어할 수 있을 뿐만 아니라 별도의 전송라인을 구비할  필요가 없으므로 비용을 절감할 수 있는 효과가 있다.
Patent KR-960005500-B1 (KR)
Title: Spray gun with dual mode trigger
Inventor: GRIME THOMAS E
IPC: B05B7/00
Filed: 1993-05-21
Granted: 1996-04-25
Abstract: A hand held spray gun (10) which reduces operator fatigue and stress. The gun handle (14) has an ergonomically designed shape and the size of the handle may be changed using different size handle covers (25). The gun (10) has a plurality of triggers (31, 42, 44, 45) operated by different fingers (50, 51) when the gun is held in different orientations to reduce fatigue and operating frequency stress on an operator's fingers. Some triggers operate low force valves which supply pilot air to a pilot valve which opens the fluid and air valves. Paint and air hoses (38, 40) may be attached to alternate locations on the gun (10) to reduce hand and wrist fatigue when painting vertical or horizontal surfaces. A junction box (99, 100) may be included to allow the connection of lighter weight hoses (38, 40) to the gun and may include an optional trigger valve (110) to remotely trigger the fluid and air valves in the gun. <IMAGE>
Patent KR-950009168-B1 (KR)
Title: Making method of non-heat-treatment steel with hot forging
Inventor: LEE DOK-RAK
IPC: C21D8/06
Filed: 1993-06-16
Granted: 1995-08-16
Abstract: The untemper steel for a high toughness hot forging is mfd. by (a) hot rolling a steel composed of 0.15-0.25 wt.% C, 0.15-0.65 wt.% Si, 1.0-2.0 wt.% Mn, 0.071-0.15 wt.% V, 0.008-0.03 wt.% Ti, at most 0.05 wt.% Al, 0.005-0.02 wt.% N, at most 0.03 wt.% P, 0.02-0.08 wt.% S, residual Fe and impurities to destroy a casting structure, (b) forging it at 1100-1300 deg. C, and finish-forging it at 900 deg.C or more, and (c) cooling it at 10-200 deg.C/min cooling speed, air-cooling it. The untemper steel is used as a raw material of crank shafts and connecting rods in cars.
Patent KR-960002153-B1 (KR)
Title: Display brightness control method
Inventor: CHA SE-INN
IPC: G11B27/02
Filed: 1993-06-28
Granted: 1996-02-13
Abstract: The segments corresponding to a current operating mode of a VCR is displayed brighter than other segment which is in dimmer mode. The method comprises the steps of: (A) scanning input keys; (B) discriminating mode corresponding to the input key signal; (C) discriminating that the input mode is brightness control mode; (D) discriminating that the power is turned on; (E) discriminating that a tape is operating; and (F) controlling brightness of segments corresponding to current operating mode detected in the step (C) to (E) .