baber/WOPTO huggingface dataset:
Patent KR-910000041-B1 (KR)
Title: Method and apparatus for forming synthetic resin container
Inventor: HWANG CHANG-WOON
IPC: B29C51/22
Filed: 1988-04-15
Granted: 1991-01-19
Abstract: The  synthetic  resin  container  having  many  grooves   is manufactured by extruding  synthetic resin into thin  sheets   and then  continuously  vaccum  moulding  the  sheets   into   various synthetic resin containers or pots. The process is capable of  the mass production  and reduces the production cost. The  process  is useful for       manufacturing food containers,  disposable  cups, packaging cases for  bean-curd,  or   seedling  culture  pots  for agriculture.
Patent KR-960015820-B1 (KR)
Title: Security paper
Inventor: BOEHM MICHAEL
IPC: G07D7/12
Filed: 1988-08-13
Granted: 1996-11-21
Abstract: The security paper has an embedded security thread running from edge to edge, which is printed with luminescent inks in such away that they are not visible under normal lighting. The luminescent inks are provided in successive, overlapping sections along the security thread, which, when the inks are excited, have a length visible to the naked eye and characteristic mixed fluorescence in the overlapping areas. 
<IMAGE>
Patent KR-960010016-B1 (KR)
Title: O-(o-ethyl-s-alkylphosphoryl)-o-(carbamoyl)-pyrocatechol derivatives
Inventor: WOLFGANG SEPPELT
IPC: A01N57/14
Filed: 1988-09-27
Granted: 1996-07-25
Abstract: O-(O-ethyl-S-alkylphosphoryl)-O-(carbamoyl)-pyrocatechol derivatives of the formula I    <IMAGE>  (I)  where R1 is C1-C4-alkyl, R2 is hydrogen, C1-C4-alkyl, and X is oxygen or sulfur, and methods of combating pests with effective amounts of I.
Patent KR-940000237-B1 (KR)
Inventor: TAKEHARA KATSUOMI
IPC: D02G1/12
Filed: 1988-10-21
Granted: 1994-01-12
Abstract: 내용 없음.
Patent KR-0129530-B1 (KR)
Title: Webbed scanner window
Inventor: MAGNUSSON STEVEN L
IPC: G11B15/61
Filed: 1988-10-28
Granted: 1998-04-17
Abstract: A head assembly which provides in the rotary scanner body a tape support structure including a scanner opening, a pair of magnetic heads mounted in the scanner opening for the reading and writing of data on a magnetic tape medium, a support member disposed on the scanner body at the scanner opening and extending between the two magnetic heads to support the tape as it moves across the scanner opening, said tape support structure producing a dramatic improvement in signal output across the length of the head scan.
Patent KR-0152254-B1 (KR)
Inventor: KIKUCHI MAKOTO
IPC: C09K19/46
Filed: 1988-12-24
Granted: 1998-10-01
Abstract: 내용 없음.
Patent KR-910004117-B1 (KR)
Title: A deoxidation reagent of sempler in smelting
Inventor: RYU BYONG-DON
IPC: G01N33/20
Filed: 1988-12-29
Granted: 1991-06-22
Abstract: A pacifing agent is inserted  into  the  sampler  useful  for picking analysis sample (specially, Al-killed molten  steel),  and pacifies the residual oxygen. The agent consists of 70-90 wt.%  Ti and 10-30 wt.% Fe. The agent supplies picking  the  good  analysis sample at comparative low temperature.
Patent KR-920007667-B1 (KR)
Title: Exhaust gas line for a super charged multi-cylinder pistion internal combustion engine
Inventor: HERVERT DEUTSCHMANN
IPC: F01N13/14
Filed: 1987-07-21
Granted: 1992-09-14
Abstract: PCT No. PCT/DE87/00325 Sec. 371 Date Jun. 8, 1988 Sec. 102(e) Date Jun. 8, 1988 PCT Filed Jul. 21, 1987 PCT Pub. No. WO88/02809 PCT Pub. Date Apr. 21, 1988.An inner line (11) conducting the exhaust gases is arranged within a gas-tight housing (12, 13) surrounding the inner line (11) with a spacing. The inner line (11 l ) is assembled of individual sections (15) whereby the length of a section (15) corresponds approximately to the cylinder spacing of the piston internal combustion engine. Each section (15) of the inner line (11) consists of two channel-shaped parts (15a, 15b) which with flanges (18, 19) formed-on at the two longitudinal edges resting one upon the other form between them the line cross section. The flanges (18, 19) of the channel-shaped parts are secured at the surrounding housing (12, 13) by bolts (22, 23). The manufacture of the inner line (11) from sheet metal under avoidance of welded connections permits a particularly economic manufacture and results in a weight-saving type of construction.
Patent KR-920000996-B1 (KR)
Title: Fixing device of piano string
Inventor: HWANG NAM-KYO
IPC: G10C3/00
Filed: 1989-02-20
Granted: 1992-02-01
Abstract: The  improved  construction  modifies  the  construction  of fixtures for the strings for low medium and high  pitch  notes  to facilitate machine production. The fixtures  (3,3')  have  grooves respectively provided in the longitudinal direction on their upper part to receive a support rail (12)  protrusively  in  the  groove (18), the rail having a number of nails (11) for  holding  strings connecting to the frame by means of a link (15,15') and nails (9).
Patent KR-910009676-B1 (KR)
Title: Method for processing blue crabs
Inventor: CHOI JUNG-SIL
IPC: A23L17/40
Filed: 1989-03-06
Granted: 1991-11-25
Abstract: (a)  washing  blue crabs with sea water; (b) adding suitable amount of water (5) into the steaming pot (3); (c) putting the washed  blue crabs  in  the steaming pot having holes-contg. support plate (2) and lid  (3a); (d) putting the plate type of condiment (4) contg.  50 wt.%  crab sauce, 20 wt.% salt, 20 wt.% pepper powder, 5 wt.% vinegar, 4 wt.% garlic, 0.6 wt.% cinnamon and 0.4 wt.% licorice on the  (1);  (e) piling up (1) and (4); (f) steaming it at 100 deg.C for 25-30 min. to obtain the final product. The  cooked  blue  crab has  a  good taste.
Patent KR-0139216-B1 (KR)
Inventor: CHANDRARATNA ROSHANTHA A S
IPC: C07C69/773
Filed: 1989-04-07
Granted: 1998-05-01
Abstract: 내용없음
Patent KR-920006720-B1 (KR)
Inventor: KOIZUMI JUNJI
IPC: C08L23/16
Filed: 1989-04-13
Granted: 1992-08-17
Abstract: 내용 없음.
Patent KR-970010760-B1 (KR)
Title: Antigens composed of major histocompatibility complex class i antigens and specific carrier molecules
Inventor: SEEMANN GERHARD
IPC: C07K19/00
Filed: 1989-07-27
Granted: 1997-06-30
Abstract: Antigen constructs which result from linkage of major histocompatibility complex (MHC) Class I antigens to specific carrier molecules are described. The linkage takes place at the N or C terminus by covalent bonding or, in the case of non-covalent bonding, e.g. via avidin-biotin bridging. The specific carrier molecules bind selectively to target cells and are preferably monoclonal antibodies. Genetic engineering processes for the production of such constructs are indicated. Antigen constructs according to the invention are used for damaging or eliminating target cells. <IMAGE>
Patent KR-960011525-B1 (KR)
Title: Process for the preparation of motilin-like polypeptide and expression thereof
Inventor: KURONO MASAYASU
IPC: C07K14/63
Filed: 1989-08-24
Granted: 1996-08-23
Abstract: Process for the preparation of motilin-like polypeptide, a recombinant DNA therefor, and a plasmid, in which the recombinant DNA is inserted.
Patent KR-920010283-B1 (KR)
Inventor: HIROSHI YAMAGUCHI
IPC: D01H7/56
Filed: 1989-09-05
Granted: 1992-11-21
Abstract: 내용 없음.
Patent KR-920003367-B1 (KR)
Title: Memory device for video printer
Inventor: KWAK HUI-KUK
IPC: H04N1/04
Filed: 1989-10-04
Granted: 1992-04-30
Abstract: The memory circuit for editing two screens by using a  memory to arrange the scenes by a user comprises first and second  screen selection switches (SW1,SW2), a number of mode selection  switches (SW3-SWn), a  microcomputer  (11)  for  receiving  horizontal  and vertical sync. signals to generate horizontal and vertical address control signals (S1,S2) and reading a  second  horizontal  address from an internal  memory  to  output  it,  a  comparator  (9)  for comparing the second address with a first horizontal address  from a memory controller (8) to generate a coincidence signal (S1), and a memory  enable  controller   (17)   for   logic-operating   the coincidence signal and  first  and  second  image  memory  control signals to generate an image memory (3) enable signal (S4).
Patent KR-0130968-B1 (KR)
Inventor: OSUGA MINORU
IPC: B60W10/10
Filed: 1989-10-05
Granted: 1998-04-21
Abstract: 내용없음.
Patent KR-910006001-B1 (KR)
Title: Physical therapy apparatus
Inventor: CHO SUNG-KYUN
IPC: A61H39/04
Filed: 1989-11-04
Granted: 1991-08-09
Abstract: The apparatus includes two footing  pedals  having  on  their respective surfaces a plurality of small projections and actuating up and down and simultaneously or  separately  rotating  right  or left in reciprocal alternation under a cam mechanism driven  by  a motor and controlled by handles. Upon movement of the pedals  with bare feet on them, the projections stimulates the respective  foot soles of the  user  to  produce  the  effect  of  acupressure  and massage, while the reversably reciprocal rotation  of  the  pedals relieves the strain on the ankle joint and the  calf  muscle.  The apparatus is  useful  for  physical  treatment  of  patients   in hospitals and for relief  of  strained  muscles  for  athletes  in sports facilities or health clubs.
Patent KR-920009029-B1 (KR)
Inventor: KUSADA TOKUTARO
IPC: G09G3/36
Filed: 1989-11-04
Granted: 1992-10-12
Abstract: 내용 없음.
Patent KR-960005503-B1 (KR)
Title: Powder spray gun
Inventor: SCHNEIDER DOUGLAS A
IPC: B05B1/00
Filed: 1988-08-02
Granted: 1996-04-25
Abstract: A powder spray gun comrpises a tubular housing having ambient air flow passages located in the side wall thereof medially of the opposite ends. A pair of air flow amplifiers are mounted in the housing on opposite sides of the ambient air flow passages and are so oriented that compressed air supplied to the upstream one of these amplifiers, the so called suspension amplifier, is operable to draw ambient air into the outlet end of the suspension amplifier, and compressed air supplied to the downstream amplifier, the so called pattern amplifier, is operable to draw ambient air into the inlet end of the pattern amplifier. The amplifiers are secured within the housing by end caps which are sealingly secured onto the ends of the housing by bayonet pin and slot connectors.
Patent KR-920009618-B1 (KR)
Inventor: NAKAMURA SHINICHI
IPC: C08F285/00
Filed: 1990-01-12
Granted: 1992-10-22
Abstract: 내용 없음.
Patent KR-920000345-B1 (KR)
Title: Appratus pressurizing air automatical for protecting vacuum
Inventor: LEE KI-WON
IPC: F16L55/07
Filed: 1990-01-23
Granted: 1992-01-11
Abstract: The apparatus introduces air into a drain conduit in order to prevent the formation of vacuum  in  the  conduit.  The  apparatus includes an actuation disc (10), a circular hed (20) and  a  cover (30). The actuation disc (10)  opens  vertical  ventilation  holes (23) of the circular head (20) when a sufficient level  of  vacuum is formed within  the  conduit,  and  the  disc  (10)  closes  the ventilation holes (23) when  the  vacuum  within  the  conduit  is dissipated. The conduit is maintained in a  water-tight  condition owing to the existence of a circular disc (14).
Patent KR-930011536-B1 (KR)
Inventor: ALPHA JAMES W
IPC: G11B7/24
Filed: 1990-02-20
Granted: 1993-12-10
Abstract: 내용 없음.
Patent KR-920009858-B1 (KR)
Inventor: MIYAJIMA YUKIO
IPC: B29C33/00
Filed: 1990-03-09
Granted: 1992-11-02
Abstract: 내용 없음.
Patent KR-940000173-B1 (KR)
Inventor: SASAKI AKIMASA
IPC: F24C7/02
Filed: 1990-03-15
Granted: 1994-01-08
Abstract: 내용 없음.
Patent KR-0180219-B1 (KR)
Inventor: KUNKEL GEORG
IPC: C23C14/50
Filed: 1990-05-10
Granted: 1999-02-18
Abstract: 고진공 증착 또는 스퍼터 장치에서 코팅할 렌즈를 지지 회전하는 장치이다. 
     고진공 장치의 처리실내 기판지지장치에 지지할 렌즈를 반송할 수 있는 한 쌍의 링이 자리잡고, 기판지지장치는 부분 구형의 금속판으로 수직축에 대하여 회전 가능하다.  레이크를 형성하는 낫모양의 금속판소재가 부분적으로 기판지지장치를 덮어 싸고 있다.  기판지지장치 회전축 방향으로 이동할 수 있는 안내 링에 의하여 레이크가 지지 안내되고, 처리실 벽에 장치된 리프트 모터의 리프트 부재에 의하여 레이크는 이동한다.  레이크는 기판지지장치를 향해 마주하고 있는 하부 가장자리를 가지는 각각의 살을 가지며, 이 살을 각각의 렌즈 지지장치의 피니언 또는 기어휠에 맞물린다.  렌즈 홀더가 180°회동할 수 있도록 페그를 거쳐 기판에 장착되어 있다.  렌즈 홀더는 리프트 기구가 레이크를 낮춘 후 기판지지장치의 회전에 의하여 회동함으로써 레이크의 살과 기어 또는 피니언사이의 맞물림이 일어난다.
Patent KR-920008906-B1 (KR)
Title: Focus compensating circuit
Inventor: YUN YONG-U
IPC: H01F38/42
Filed: 1990-05-23
Granted: 1992-10-10
Abstract: The peripheral focus correction circuit using  the  resonance circuit  comprises:  an  LC  resonance  circuit   resonating   the secondary horizontal deflection coil of a flyback  transformer;  a DC rectifier  rectifying  the  direct  current  pulse  from   the secondary terminal of the flyback transformer; a vertical  dynamic focus  amplifier  generating  the  vertical   focus   voltage   by amplifying the parabolic type waveform outputted from the vertical deflection coil; a signal coupler outputting the  corrected  focus voltage by superpositioning the super positioned value of  the  LC resonance circuit output and the vertical dynamic focus  amplifier output to the DC rectifier output.
Patent KR-930004245-B1 (KR)
Title: Ic card module implementing method
Inventor: KWON YONG-SHIN
IPC: H01L23/28
Filed: 1990-05-31
Granted: 1993-05-22
Abstract: The method provides the cost down and improves the supporting strength of module on the distortion of IC card. The upper side of IC module (1) adheres to the main  body  of  card  (2)  using  the adhesives after inserting the IC module (1) into the space  region (SP). The adhesive resin (AR) is supplied to the gap  between  the IC module and the main body of card. The  main  body  of  card  is processed for the same shape as the IC module. The  IC  module  is manufactured by using the transfer molding method and the  potting method.
Patent KR-930002833-B1 (KR)
Title: Gamma interferon in nephrosis theraphy
Inventor: BYON KWANG-HO
Filed: 1990-07-24
Granted: 1993-04-10
Abstract: The drug composition containing gamma interferon as an active component  for  treating   nephrosis   interferon   inhibits   the expression of human B lymphocyte CD23  Gamma  interferon  inhibits the formation of water soluble CD23. Interferon  is  an  antiviral glucoprotein.
Patent KR-920010533-B1 (KR)
Title: Boron steel for bushing & its making process
Inventor: KIM KANG-HYONG
IPC: C22C38/04
Filed: 1990-08-03
Granted: 1992-12-04
Abstract: The method for wear resistance bushing, whose composition  is 0.15- 0.35 C, -0.35 Si, 0.60-1.20 Mn, -0.04 S, 0.10-0.65 Cr,  -0.20 Mo, 0.0005-0.003 B, -0.2 Ti, 0.1 sol. Al, and remainder of Fe  and unavoidable impurities in wt.%, is characterized by the following; (1) heating to a designated  temperature  over  Ac3  according  to carbon content, (2) hardening in solution of -20 % salt  water  or sodium hydroxide, and (3) tempering at 190 deg.C for 2 hr.
Patent KR-960000149-B1 (KR)
Inventor: ALEX K RAITH
IPC: H04W52/02
Filed: 1990-08-09
Granted: 1996-01-03
Abstract: 내용 없음.
Patent KR-930005235-B1 (KR)
Title: Semiconductor memory cell manufacture method
Inventor: CHON YONG-KWON
IPC: H01L21/70
Filed: 1990-10-15
Granted: 1993-06-16
Abstract: The  method  comprises  (a)  forming  a  transistor  using  a sidewall polysilicon added to a gate electrode to obtain a vetical structure of gate electrode on the field oxide, (b) forming a  cap oxide and insulation  film  to  flatten  uneven  surfaces  on  the transistor, (c) forming a sidewall oxide on a contact region after removing half the thickness of the electrode on the  field  oxide, (d) forming a capacitor, (e) forming a cap oxide and an insulation film thereon, (f) contact  etching  bit  lines,  and  (g)  forming successively the sidewall oxide and the protective insulation film on the bit line contact.
Patent KR-930006421-B1 (KR)
Title: Telecontroller system
Inventor: KIM HYO-SOK
IPC: G08C19/36
Filed: 1990-10-30
Granted: 1993-07-14
Abstract: The system for remote  infra-red  controlling  where  control command  is  initiated  at  remote  telephone  set  comprises:   a tele- control unit (D) for remote controlling a  controlled  object (E) with  intense  infra  red  light,  and   exchanging   command informations between a telephone adapter (B) and a remote  control unit (D). The remote control unit (D) is  a  removable  controller for generatinig control signal to a  object  if  the  tele-control unit is detached  from  the  system.  The  system  is  useful  for auto-mated home.
Patent KR-960001614-B1 (KR)
Inventor: IMRE KERI
IPC: H01L23/31
Filed: 1990-11-21
Granted: 1996-02-02
Abstract: 내용 없음.
Patent KR-0147057-B1 (KR)
Title: Use of 15-keto-prostaglandin compound for improvement of encephalic function
Inventor: UENO RYUJI
IPC: A61K31/557
Filed: 1990-11-22
Granted: 1998-08-17
Abstract: A use of 15-keto-prostaglandin compound for the manufacture of a medicament for improving encephalic action.
Patent KR-930011119-B1 (KR)
Inventor: KIM KANG-SAN
IPC: H01L23/48
Filed: 1990-11-23
Granted: 1993-11-24
Abstract: 내용 없음.
Patent KR-100201577-B1 (KR)
Inventor: ELLIS JOHN A
IPC: F16D3/06
Filed: 1990-11-26
Granted: 1999-06-15
Abstract: 단부 요크등을 관통하여 형성된 구멍을 구비한 부품에 이탈가능하게 보유될 수 있는 보호용 커버가 개시된다. 이 커버는 외측 둘레 주위에 형성된 매달려 있는 주변 부분을 구비한 편평한 원형 단부로 구성된다. 이 주변 부분은 단부와 일체로 형성되어 중공 원통형 보호 구역을 형성하도록 단부로부터 축방향 하방으로 연장한다. 제1 및 제2다리부들이 단부와 일체로 형성되어 주변 부분내에서 이 주변 부분을 가로넘어 하방으로 연장한다. 이 다리부들이 단부로부터 연장하면서, 이 다리부들은 서로 약간 이격되어 역전된 Ⅴ-형으로 벌어진다. 이 다리부들의 하측 단부에서, 일련의 개별적인 견부들이 형성된다. 이 커버는 다리부들을 약간 압축시키고 부품의 한 단부에서 구멍을 통해 삽입함으로써 설치된다. 다리부들의 단부들이 부품의 반대쪽 단부 너머로 이동될 때, 견부들이 커버를 보유하기 위해 다른 단부와 결합하도록 상기 다리부들이 이격되어 벌어진다.
Patent KR-0134116-B1 (KR)
Inventor: ENGLUND ARNOLD
IPC: F04C28/26
Filed: 1989-05-29
Granted: 1998-04-28
Abstract: 없음
Patent KR-940004257-B1 (KR)
Title: Manufacturing method of bipolar transistor
Inventor: HAN SOK-U
IPC: H01L29/73
Filed: 1991-01-18
Granted: 1994-05-19
Abstract: The fabricating method of bipolar transistor comprises the steps of: forming a highly impurity-doped buried region of a second conductive type on a silicon substrate of a first conductive type, and forming an epitaxial layer on the overall surface of the substrate; forming a collector region which is in contact with the buried region by ion implanting of a second conductive type impurity to the epitaxial layer selectively; forming an insulation layer on the overall surface of the substrate, and etching a predetermined portion of the insulation layer and epitaxial layer to a predetermined depth selectively; forming a base region by ion implantation of a first conductive type impurity to the etched region; forming a sidewall of insulating layer on the side wall of the epitaxial layer of the base region; and depositing polysilicon on the overall surface of the substrate, and forming an emitter region by patterning the polysilicon layer, thereby reducing the collector resistance and forming the self-aligned base region and emitter region.
Patent KR-930001641-B1 (KR)
Title: Data recording device and method
Inventor: PARK PAN-KI
IPC: G11B20/10
Filed: 1991-01-22
Granted: 1993-03-08
Abstract: The method is for reproducing the recorded  data  just  after recording the data to check the error, and rerecording  the  error data so that the non-error data is recorded. The circuit comprises a buffer memory (12) buffering the  input  data,  controller  (10) providing the recording/reproducing control  signal,  a  DSP  (13) converting the buffered data format to the DAT  format,  a  memory (14) storing the converted data, amplifiers (15,25) amplifying the recording/reproducing  data,  a   data   strobe   generator   (23) generating the tag and  clock  signals  of  the  reproduced  data, buffers (21,22) connected to the generator  (23),  and  comparator (20) comparing the taged reproducing signal of the buffer (21) and the stored data of the memory (14) to check the error.
Patent KR-940005277-B1 (KR)
Title: Lower end fixture formed fin for preventing dust in nuclear fuel assembly
Inventor: SO KUM-SOK
IPC: G21C3/30
Filed: 1991-02-05
Granted: 1994-06-15
Abstract: The apparatus prevents the alien substances of fatal size from flowing into the nuclear fuel assembly. The grid type fins (8,8') are formed on cooling water holes (7,7') bored at the lower structure (2) of the fuel assembly so that the large size particles are filtered at the fins. But smaller particles is passed through the fins without influencing the coating tube of the fuel assembly.
Patent KR-100195346-B1 (KR)
Inventor: KAUFMANN DIETER DR
IPC: C07D213/61
Filed: 1991-06-21
Granted: 1999-06-15
Abstract: 본 발명은 염기성 유기 질소 화합물의 존재하 및 희석제의 존재하에 -20℃ 내지 +150℃의 온도에서, 하기 일반식(Ⅱ)의 3-메틸-피리딘-1-옥사이드를 하기 일반식(Ⅲ)의 염소화제와 반응시키고, 반응 생성물을 통상적인 방법으로 후처리함을 특징으로 하여, 하기 일반식(Ⅰ)의 2-클로로-5메틸-피리딘을 제조하는 신규한 방법에 관한 것이다. 
     
       
     
     상기식에서, R 1 은 알킬, 할로게노알킬, 사이클로알킬, 임의 치환된 아릴, NR 2 R 3 또는 OR 4 를 나타내고, 상기에서, R 1 및 R 3 는 각각 알킬, 사이클로 알킬 또는 아릴을 나타내거나, 함께 알칸디일 또는 옥사알칸디일을 나타내고, R 4 는 알킬, 사이클로알킬 또는 임의 치환된 아릴을 나타낸다.
Patent KR-940002614-B1 (KR)
Inventor: NAKA KAZUTAKA
IPC: H04N9/797
Filed: 1991-06-24
Granted: 1994-03-26
Abstract: 내용 없음.
Patent KR-950008994-B1 (KR)
Inventor: TAKAMORI TETSUYA
IPC: B62D1/04
Filed: 1991-06-28
Granted: 1995-08-10
Abstract: 내용 없음.
Patent KR-950001984-B1 (KR)
Inventor: SUEDA NORIO
IPC: B25C5/15
Filed: 1991-09-18
Granted: 1995-03-08
Abstract: 내용없음.
Patent KR-950009278-B1 (KR)
Inventor: ITO NOBUKAZU
IPC: C23C14/34
Filed: 1991-10-09
Granted: 1995-08-18
Abstract: 내용 없음.
Patent KR-100188049-B1 (KR)
Title: Process for poducing high-strength stainless steel strip
Inventor: IGAWA TAKASHI
IPC: C21D6/00
Filed: 1991-10-11
Granted: 1999-06-01
Abstract: A high strength steel strip excellent in shape having a duplex structure of austenite and martensite has been prepared by a process which comprises providing a cold rolled or cold rolled and annealed strip of a martensitic structure from low carbon martensitic stainless steel containing from 10 to 17 % by weight of Cr and having a carbon content of not exceeding 0.15 % by weight, causing the strip to continuously pass through a continuous heat treatment furnace where the strip is heated to temperatures within the range from (the As point of the steel + 30  DEG C.) to the Af point of the steel and not higher than 900  DEG C. so that a part of the martensitic phase may be changed to a reversed austenitic phase, and cooling the heated strip to ambient temperature, wherein the As point of the steel is a temperature of the steel of which temperature is being raised at which the transformation of martensite to austenite begins and the Af point of the steel is a temperature of the steel of which temperature is being raised at which the transformation of martensite to austenite is finished.
Patent KR-940004033-B1 (KR)
Title: Steel with improved weldability
Inventor: MAURICKX THIERRY
IPC: C22C38/08
Filed: 1991-10-17
Granted: 1994-05-11
Abstract: Steel with improved weldability, exhibiting a good resistance to cracking in the case of high welding energies, a good cold resilience and requiring no preheating before welding. 
<??>The weight composition of the steel is the following: 
 
  - from 0.07 to 0.11 % of carbon, 
  - from 1.40 to 1.70 % of manganese, 
  - from 0.20 to 0.55 % of nickel, 
  - from 0 to 0.30 % of copper, 
  - from 0 to 0.02 % of niobium, 
  - from 0.005 to 0.020 % of titanium, 
  - from 0.002 to 0.006 % of nitrogen, 
  - from 0 to 0.15 % of silicon, 
 the remainder being iron.
Patent KR-950006507-B1 (KR)
Title: Gas sensor output data processing for air cleaner
Inventor: HONG YONG-KI
IPC: B01D46/42
Filed: 1991-11-21
Granted: 1995-06-16
Abstract: The method is characterized by that a micom for controlling the weight according to the output of a gas sensor reads the contamination data of the gas sensor output at constant intervals and averages the values so as to recognize the contamination degree.
Patent KR-940009701-B1 (KR)
Title: Counter having the function of modulus variation
Inventor: KIM KWANG-MUN
IPC: G06F15/00
Filed: 1991-11-22
Granted: 1994-10-17
Abstract: The counter free in modulus transformation, particularly an asynchronous counter, makes transformation speed quick by the modulus transformation just after a counting state corresponding to a binary digit, before the modulus becomes the highest counting state. The counter is formed by an outer controlling input terminal; a NAND gate for inversing a clock pulse and outputting to a clock terminal; NAND gates which respective outputting terminals are connected to respective clock terminals of flip-flops; a first, a third and a fifth transmitting gates; a second, a fourth and a sixth transmitting gates; an inverter; and a NAND gate whose output terminal is connected to clear terminals of flip-flops.