baber/WOPTO huggingface dataset:
Patent KR-910000795-B1 (KR)
Title: Making method for semiconductor device
Inventor: SUH JIN-HO
IPC: H01L21/31
Filed: 1987-11-17
Granted: 1991-02-08
Abstract: The  manufacturing  method  of  an   isolation   layer   for eliminating  the  interaction  of  each  elements  formed  in  the semiconductor IC comprises (a) forming a SiO2 layer (12) onto  the Si substrate (11), (b) forming a first Si nitride layer (13)  onto the layer (12), (c) forming a thin  Si  nitride-oxide  layer  (17) onto the layer (13) forming a second  Si  nitride  (18)  onto  the layer (17),  and  (d)  patially  etching  the   oxide   film   by photomasking method and thermal oxidizing it.
Patent KR-910005114-B1 (KR)
Title: Cooking method for microwave oven
Inventor: CHOI JIN-KYU
IPC: F24C7/08
Filed: 1987-12-03
Granted: 1991-07-22
Abstract: The cooking control method determines the kinds of  the  menu like a boiled rice, pot stew, hard boiled, or steamed  dishes  and the cooking quantity for served person. According to the  selected menu and cooking  quantity,  a  microprocessor  (1)  controls  the output of the magnetron and cooking time  with  the  program.  The program adjusts the output level of  the  magnetron  automatically for preset time to cook the desired food properly.
Patent KR-910001319-B1 (KR)
Inventor: MICHEL ROUSSEL
IPC: H02B1/044
Filed: 1988-01-08
Granted: 1991-03-02
Abstract: 내용 없음.
Patent KR-960015247-B1 (KR)
Inventor: SWARS HELMUT
IPC: B21D26/033
Filed: 1988-05-25
Granted: 1996-11-04
Abstract: 내용없음.
Patent KR-910010131-B1 (KR)
Title: Ceric oxide with new morphological characteristics and method for obtaining same
Inventor: LELOARER JEAN-LUC
IPC: C01F17/235
Filed: 1988-06-29
Granted: 1991-12-17
Abstract: A process for obtaining a ceric oxide. More precisely, a process for increasing and stabilising the specific surface of a ceric oxide at high temperature. 
<??>The process of the invention, which consists in preparing a ceric oxide by calcining a ceric hydroxide, is characterised in that the ceric hydroxide is subjected to a solvothermal treatment before the calcination operation.
Patent KR-920006852-B1 (KR)
Inventor: SEKI MITSUHO
IPC: H01L21/768
Filed: 1988-07-13
Granted: 1992-08-20
Abstract: 내용 없음.
Patent KR-960014700-B1 (KR)
Title: Culturing method and culture apparatus
Inventor: MATSUBARA KOICHI
IPC: C12N5/02
Filed: 1988-07-28
Granted: 1996-10-19
Abstract: A culture method comprising cultivating cells or tissue in a liquid medium for producing a useful substance, characterized in that at least two culture tanks communicating with each other are used, the first tank providing substantially optimal conditions for growth and the second tank prividing substantially optimal conditions for the production of said useful substance. The method can be carried out following either a continuous or semi-continuous process. A culture apparatus for carrying out the method is also disclosed.
Patent KR-920002707-B1 (KR)
Title: Platinum-aluminide coating method of a super alloy
Inventor: SIN SAE-KYUN
IPC: C23C10/48
Filed: 1988-09-23
Granted: 1992-03-31
Abstract: In methods for coating Pt-aliuminide films on  Ni-base  super alloy, it is  characterized  by  following  processes;  (1)  after polishing and cleaning the surface of  substrate,  electro-plating platimum film on it; (2) enhancing cohesion between  platinum  and Ni-base super alloy by diffusing Ni into platinum layer with  heat treatments (diffuse-out process); (3) diffusing  metal  powder  of aluminum and yttrium into Ni diffused platinum  layer  for  making binary phase mixed structure (diffuse-in process). In this method, the diffuse-out process is consisting  of  calcining  Ni  diffused layer at 250 deg.C for 2 hrs and at 400 deg.C 3 hrs and  diffusing Ni element in platinum layer at 800-1100  deg.C  for  1-4  hrs  in vacuum furnace. In the above method,  the  diffuse-in  process  is consisting of making  binary  phase  mixed  structure  of  Pt-Al-Y compound layer and Al-Ni compound layer.
Patent KR-930005860-B1 (KR)
Inventor: KASHIHARA TERUO
IPC: B23P21/00
Filed: 1988-10-07
Granted: 1993-06-25
Abstract: 내용 없음.
Patent KR-950006882-B1 (KR)
Inventor: BRUNEL ANDRE
IPC: F02M41/06
Filed: 1988-06-11
Granted: 1995-06-23
Abstract: 내용 없음.
Patent KR-930010058-B1 (KR)
Inventor: WATANABE HISASHI
IPC: H05K1/00
Filed: 1989-03-28
Granted: 1993-10-14
Abstract: 내용 없음.
Patent KR-0137279-B1 (KR)
Inventor: WILBER JAMES ALBERT
IPC: H03K4/69
Filed: 1989-04-06
Granted: 1998-04-28
Abstract: 내용 없음.
Patent KR-970007420-B1 (KR)
Inventor: MIKAMO HISANOBU
IPC: B41M5/395
Filed: 1989-07-06
Granted: 1997-05-08
Abstract: 내용없음.
Patent KR-910007891-B1 (KR)
Title: Apparatus for continuous non - electrolytic plating of fabrics
Inventor: AN TAE-HWAN
IPC: D06M11/83
Filed: 1989-08-29
Granted: 1991-10-04
Abstract: A continuous non-electrolytic  plating  appts.  of  a  fabric comprises the guide rolls (3,4) guiding the fabric  (2),  the  air burbling device (8) generating the air bubble (7) at the bottom of (4), the inner  plating  bath  (10)  adhered  with  an  insulating material (9), the outer plating bath (13) having the  heater  (12) heated by the heating medium (11). The guide roll (3) is  equipped in the outer surface of the  plating  solution  (5).  The  plating solution is pref. nickel-solution  composed  of  10-100g/l  nickel chloride,  5-50g/l  reducing  agent  and  2-50g/l  stabilizer,  or copper-solution composed of  20-100g/l  copper  sulfate,  10-50g/l reducing agent and 10-60g/l pH controlling agent.
Patent KR-0128661-B1 (KR)
Inventor: ICHIKAWA YUH-ICHIRO
IPC: C07D239/42
Filed: 1989-09-09
Granted: 1998-04-04
Abstract: 내용없음.
Patent KR-910009978-B1 (KR)
Inventor: KUSABA YOSHIAKI
IPC: B21B1/088
Filed: 1989-09-20
Granted: 1991-12-09
Abstract: 내용 없음.
Patent KR-920002283-B1 (KR)
Title: Neil lacquer composition
Inventor: LEE CHUNG-NAM
Filed: 1989-10-17
Granted: 1992-03-21
Abstract: A nail lackuer composition is composed of 8-18 wt.% of  butyl acrylate/methyl methacrylate copolymer resin, 1-4 wt.% of  sucrose benzoate/sucrose  acetate  isobutylate  butyl   benzyl   phthalate copolymer resin, a lackuer  base,  butylacetate,  silicone  resin, ketone  resin  and  toluene  sulfonamide/formaldehyde  resin.  The compsn. has a good abrasion-resistence, a thermal stability and  a light-resistence.
Patent KR-0141600-B1 (KR)
Inventor: WOONG STEPHEN LEEBOON
IPC: H01L27/04
Filed: 1989-12-18
Granted: 1998-06-01
Abstract: 내용없음
Patent KR-920005012-B1 (KR)
Title: Signalling service functions testing method
Inventor: KIM DOK-HWAN
IPC: H04M3/22
Filed: 1989-12-26
Granted: 1992-06-22
Abstract: The   operating  modes  are  set  for  the  respective  USTA (universal signaling transceiver assembly). Testing bits  are  set for the signals of MFC, DTMF  and  continuous  testing  sounds  to carry out testing.  Tests  are  carried  out  for  the  respective channel groups using the common SHW, and for the respective  USTA. The test results are displayed on a monitor screen to compare  the results, thereby carrying out a loop back testing.  That  is,  the above tests are repeated by varying the variable factors, and  the contents of the  display  on  the  screen  are  observed,  thereby checking the normal or abnormal state  of  the  operation  of  the system.
Patent KR-920005247-B1 (KR)
Title: C-bit processor of dat's digital signal processor
Inventor: AHON HYONG-GUN
IPC: G11B20/18
Filed: 1989-12-29
Granted: 1992-06-29
Abstract: The circuit  includes  a  clock  generating  means  (10)  for generating  first  and  second   bit   synchronizing   clocks.   A synchronizing   signal   generating   means   (20)   generates   a synchronizing signal for every n continuous clocks,  and  a  first clock  window  means  (30)  permits  m  units  of  the  first  bit synchronizing  clocks  to  be   passed,   each   time   when   the synchronizing signal is generated. A counter (40) counts  m  units of the first bit synchronizing clocks, and a second  clock  window means (50) permits p units of the second bit synchronizing  clocks to be passed, while a shift register  (60)  shifts  and  memorizes only the bits corresponding to the  p  units  of  the  second  bit synchronizing clocks.
Patent KR-970008215-B1 (KR)
Title: Thermoplastic composite material reinforced with hemp fibers
Inventor: FUMIO GOTO
IPC: C08L23/12
Filed: 1988-06-24
Granted: 1997-05-22
Abstract: This new thermoplastic composite material comprises a thermoplastic matrix (100 pts.by wt.), hemp fibres (15-110 pts.wt.) homogeneously dispersed in the matrix, and a wood filler (5-65 pts.wt.). The wood filler can be particles, powder or flakes and is dispersed homogeneously in the thermoplastic matrix. The thermoplastic matrix is specified to be one of polypropylene, polyethylene, ethylene-propylene co-polymer, acrylonitrile-butadiene-styrene co-polymer, or nylon (polypropylene is pref.). The thermoplastic composite material can contain 10-40 pts.wt. of inorganic filler such as talc, and can also contain a suitable amt. of plasticiser and/or lubricant. The hemp fibres are specified to be one substance or a combination of two or more substances selected from among ramie, flax, hemp, jute, Manila hemp or sisal hemp. The particles of the composite material are formed into sheets adapted for stamping or pellets adapted for injection moulding.
Patent KR-0142417-B1 (KR)
Inventor: CLIFFE IAN ANTHONY
IPC: C07D295/13
Filed: 1990-04-20
Granted: 1998-06-01
Abstract: 내용 없음.
Patent KR-930000062-B1 (KR)
Title: Trans dermal pharmaceutical composition for protein and peptide drugs
Inventor: LEE HAE-BANG
IPC: A61F13/40
Filed: 1990-05-22
Granted: 1993-01-08
Abstract: An ionophoretic  device  for  transdermal  administration  of protein or peptide comprises (a)  solvent  reservoir  of  ionizing solvent, the upper side forming an electrode open to the  outside; (b)  a semipermeable  membrane  with  molecular  cut-off  between 200-20000 which forms the lower  side  of  the  reservoir;  (c)  a hydrophilic polymer drug support contg. the drug; (d) a patch body forming an adhesive layer around  the  drug  support;  and  (e)  a needle plate in which a number  of  skin  needles  are  vertically fixed, separtated from the patch body.
Patent KR-930010169-B1 (KR)
Inventor: NISHIMURA SHINJI
IPC: H02P9/14
Filed: 1990-06-05
Granted: 1993-10-15
Abstract: 내용 없음.
Patent KR-930000773-B1 (KR)
Inventor: ISHIKAWA SHINJI
IPC: C03B37/012
Filed: 1990-06-29
Granted: 1993-02-04
Abstract: 내용 없음.
Patent KR-930002255-B1 (KR)
Inventor: MASUDA MASAMI
IPC: G11C11/409
Filed: 1990-07-11
Granted: 1993-03-27
Abstract: 내용 없음.
Patent KR-100189663-B1 (KR)
Inventor: KLIGMAN ALBERT M
IPC: A61K31/07
Filed: 1990-09-27
Granted: 1999-06-01
Abstract: 선 팽창 병변은 유효량의 레티노이드, 바람직하게는 레티노산을, 약 0.025 내지 0.1중량% 레티노산 농도의 크림 기재와 같은 피부과학적으로 허용되는 비히클로, 1일 용법으로 병변이 생긴 피부에 국소 적용함으로써 예방하고/거나 크기를 감소시킬 수 있다. 선발적 단계에 적용하면 레티노이드는 복부선 병변의 형성을 방지하는데 유효할 수 있으며, 다른 단계에 적용하면 레티노이드는 향상된 피부결 및 연성과 함께 병변의 넓이 및 깊이를 감소시키는데 유효할 수 있다.
Patent KR-0152770-B1 (KR)
Inventor: LEE KYU-SOO
IPC: H04M3/50
Filed: 1990-11-21
Granted: 1998-11-02
Abstract: 본 발명은 PCM/TDM 방식을 이용하는 디지탈 전화교환장치에서 여러명의 가입자가 동시에 녹음하고 재생시킬 수 있게 설계되는 전화교환장치의 DVM(Digital Voice Mail) 자동 녹음/응답 시스템에 관련한다. 
     기존의 VM(Voice Mail) 시스템은 아날로그 음성기록 방식의 테이프 레코더를 이용하고 있기 때문에 다수의 가입자가 동시에 VM 시스템을 이용할 수 없었고 또한 사이즈와 시스템 구축상의 문제가 있었다. 
     본 발명은 반도체 메모리를 이용하여 음성 디지탈 데이터를 직접 기록하는 방식을 채택함으로써 테이프 녹음 및 재생을 위한 A/D 컨버터 및 D/A 컨버터를 VM 보드에서 삭제시킬 수 있게 되며 주 CPU에 의한 시간대 설정 및 절체를 통하여 동시에 다수의 가입자가 녹음 및 재생할 수 있게 됨은 물론 재생 및 녹음 데이터가 각각 할당된 타임 슬롯에 존재하게 되므로 그 데이터가 오우버랩 되거나 멧세지의 불충분한 수신을 방지할 수 있게 되므로 디지탈 전화교환기의 가치를 가일층 증대시킬 수 있게 된다.
Patent KR-930005883-B1 (KR)
Title: Electrode for plasma arc torch and method of fabricating same
Inventor: SEVERANCE JR WAYNE S
IPC: H01J27/08
Filed: 1990-12-06
Granted: 1993-06-25
Abstract: An electrode (14) for a plasma arc torch (10) and a method of fabricating the same are disclosed, and wherein the electrode (14) includes a copper holder (16) having a lower end which mounts an emissive insert (28) which acts as the cathode terminal for the arc during operation. Where a torch (10) is used in an oxidizing atmosphere, the copper holder (16) tends to oxidize, and the arc tends to attach to the oxidized copper rather than the insert (28), which results in the rapid destruction of the holder (16). To prevent this destruction, a sleeve (32) of silver or other metal having a relatively high work function is provided, and which is positioned to surround the insert (28) and form an annular ring (35) on the lower end surface (20) of the holder and thus to surround the exposed end face of the emissive insert (28). The annular ring (35) serves to prevent arcing from the copper holder (16), and so that the arc is maintained on the insert (28).
Patent KR-0175139-B1 (KR)
Title: Concentric smoking filter having discrete tow and web filter media
Inventor: ARTERBERY CYNTHIA W
IPC: A24D3/10
Filed: 1990-12-26
Granted: 1999-02-18
Abstract: A concentric smoking filter (12) in which one of the filter media (20 or 21) is a fibrous tow, such as fibrous cellulose acetate tow, and one of the filter media (21 or 20) is a web material, such as paper, is provided. The filter improves the taste, particularly, of "ultra-light" cigarettes. <IMAGE>
Patent KR-0166787-B1 (KR)
Inventor: YANG DAE-KEUN
IPC: H01L23/00
Filed: 1990-12-27
Granted: 1999-01-15
Abstract: 본 발명은 금속 배선막의 부식을 방지할 수 있는 반도체소자의 배선방법을 제공하기 위한 것으로 이를 위해, 기판위에 산화막을 형성하고, 포토/ 에치공정을 거쳐 금속배선막 콘택트를 형성한 다음 금속 배선막을 형성하는 단계. 상기 금속배선막위에 O₂가스를 확산시켜 설정두께의 금속산화막을 형성하는 단계. 금속산화막위에 보호산화막을 형성하고 이 보호산화막위에 본딩패드 형성용 마스크를 형성한 다음 습식으로 보호산화막의 불필요한 부분을 제거하는 단계. 상기 본딩패드형성용 마스크를 제거하는 단계가 차례로 포함된다.
Patent KR-930003039-B1 (KR)
Inventor: IKAKU SHOJI
IPC: A61H23/02
Filed: 1991-06-28
Granted: 1993-04-17
Abstract: 내용 없음.
Patent KR-940005731-B1 (KR)
Title: Manufacturing method of lge bipolar transistor
Inventor: HAM SOK-HON
IPC: H01L29/73
Filed: 1991-07-05
Granted: 1994-06-23
Abstract: The method adjusts a diffusion velocity of impurity by time delay with a width of CVD oxidation layer, increases a current driving force of device, and maintains a performance of bipolar device by preventing a formation of trap in an oxidation layer. The method includes a process which forms a base area by heating, a process which reduces a specified area of a 1st nitrogen layer (15) and a 2nd oxidation layer (14), a process which forms a spacer (17) of a nitrogen layer, a process which etches a 1st oxidation layer, and a process which diffuses an emitter area (19) by heating procedure.
Patent KR-100233897-B1 (KR)
Inventor: NARITA SUSUMU
IPC: G06F9/38
Filed: 1991-07-18
Granted: 1999-12-15
Abstract: 내용 없음.
Patent KR-0135507-B1 (KR)
Inventor: SONN DAE-RAK
IPC: G01L1/00
Filed: 1991-08-26
Granted: 1998-04-23
Abstract: 최대자기유도변화의 측정을 이용한 힘센서에 관한 것으로서 발진기(1)을 전압-전류변환기(2)에 연결하고 이를 일차코일(3)에 연결하여 시편을 자화시키며, 이차코일(4)을 전자적분기(6)에 연결하여 자기유도에 비례하는 전기신호로 변환하여 S/H증폭기(7)에 연결함과 동시 발진기(1)에서 나온 신호를 멀티-바이브레이타(8)을 사용하여 최대 자기유도의 시점에서 셈플링펄스를 만들어 S/H증폭기(7)의 디지탈 입력에 연결함으로써, 자기탄성효과에 의하여 자성재료인 시편(5)이 교류자화되는 과정에서 외력에 의한 최대자기유도의 변화를 S/H증폭기(7)에 의해 측정함으로써 힘을 측정함을 특징으로 하는 최대자기유도변화의 측정을 이용한 힘센서.
Patent KR-930012169-B1 (KR)
Title: Method for prolonging the period of fermentation of kimchi adding glucono-delta-lactone
Inventor: PARK KWAN-HWA
IPC: A23B7/10
Filed: 1991-10-09
Granted: 1993-12-24
Abstract: The  mature  of  Kimchi  is  delayed  by  adding  0.05-0.5  % glucono-delta-lactone. The obtd. Kimchi has a good taste  and  can be preserved for a long period at room temp..
Patent KR-940010068-B1 (KR)
Title: Blood pressure meter
Inventor: PARK BYONG-UK
IPC: A61B5/00
Filed: 1991-11-15
Granted: 1994-10-21
Abstract: The method and apparatus heightens the exactness in measuring the blood pressure, by comparing a detection value of lots of pulse wave with a comparing value, selecting a proper pattern and removing an abnormal data. The method includes the steps of: selecting a second data as a normal data among three continuous data in a continuous increase or reduction, and removing the rest by recognizing as the abnormal data; judging a second pulse wave data as the abnormal data and removing, when the increase or the reduction of the comparing result in three pulse data is the same; if the increase or reduction is not the same and if the third pulse wave data and the following pulse wave data are increased or reduced continuously, removing the second and third pulse wave data; and if it is not the continuous increase or reduction, judging a system error and controlling.
Patent KR-950010394-B1 (KR)
Title: Gas sensor manufacturing method
Inventor: OH CHANG-SHIK
IPC: G01N27/16
Filed: 1991-11-16
Granted: 1995-09-16
Abstract: The method for manufacturing a gas sensor sensing device for city gas comprises the steps of; mixing aluminum sol, alumina and distilled water to make paste; attaching the paste to a platinum line to obtain a sinter; depositing and then drying the sinter into catalyst water solution made by mixing palladium chloride, platinum acid chloride, hydrochloric acid and distilled water; making plastic under dry air and then making plastic under vapor; depositing at the catalyst water solution identical with that of the third step and then drying; and making plastic under dry air.
Patent KR-940006201-B1 (KR)
Title: Current control circuit of lcd
Inventor: KWAK DONG-SU
IPC: G05D25/00
Filed: 1991-11-28
Granted: 1994-07-11
Abstract: The LCD emits light of constant brightness by using a thermister to keep LCD current constant regardless of temperature variation. The current control circuit includes a LCD driver for supplying current to a LCD (23) according to control signal generated by a LCD controller (21), and a thermister (100) connected between a LCD driver and a LCD to compensate temperature variation of variable resister (VR).
Patent KR-960016160-B1 (KR)
Title: Noise reduction & re-combustion apparatus of a muffler
Inventor: LEE JIN-SANG
IPC: F01N5/00
Filed: 1991-12-12
Granted: 1996-12-04
Abstract: An impeller is installed inside the muffler. The outer case body(1) has a cylindrical disc(7) inside it, which is installed in three stage for heat insulation. Lots of perforated holes(2) on the periphery are formed in prominence and depression that the inner edge protrudes. An impelcup(6) is installed inside where a U-typed guide passage(3) for smoke and combustion gas is formed. On one side of the impelcup(6) the impeller(5) is placed.
Patent KR-940007295-B1 (KR)
Title: Bitline structure and manufacturing method thereof
Inventor: YANG DU-YONG
IPC: H01L21/82
Filed: 1991-12-13
Granted: 1994-08-12
Abstract: Bit line structure is disclosed wherein a void is presented between word lines excepting a portion in which bit line contact is formed, the void is also presented between word line contact portion and bit line contact portion, thereby reducing the capacitance of the word line.
Patent KR-950000670-B1 (KR)
Title: Clock gernerator using dielectric resonator for 2.5 gbps optical receiver
Inventor: YU KANG-HUI
IPC: H04B10/00
Filed: 1991-12-17
Granted: 1995-01-27
Abstract: The extractor comprises a converter (1) for converting received Gbps NRZ data into RZ data to extract clock, and a band pass filter (2) for extracting clock signal from inputted RZ data using a dielectric resonator.The NRZ/RZ converter (1) comprises a power divider (10) having three resistors (R1,R2,R3) to input NRZ data, micro strip lines (L1,L2) for impedance matching, and an exclusive OR (EXOR). The bandpass filter (2) comprises closed a cylinder (26), a duroid substrate (22), a dielectric (21), a micro strip line (23), a connecter (24) for joining, and an adjusting bar (25) for adjusting resonant frequency.
Patent KR-940008179-B1 (KR)
Inventor: MASE AKIRA
IPC: G02F1/1368
Filed: 1991-12-17
Granted: 1994-09-07
Abstract: 내용 없음.
Patent KR-950002431-B1 (KR)
Title: Af high speed serching method of rds receiver
Inventor: JONG BYONG-NO
IPC: H04B1/06
Filed: 1991-12-20
Granted: 1995-03-20
Abstract: The apparatus includes a first low pass filter having high-speed response characteristic corresponding to a short mute time during high-speed searching in PLL, a second low pass filter having low-speed response characteristic, and a switch for selecting the output signal of the first low pass filter or output signal of the second low pass filter according to a microcomputer, thereby converting the low pass filter into low-speed or high-speed using a control signal.
Patent KR-100233859-B1 (KR)
Inventor: KURIMOTO MITSUYOSHI
IPC: A23L5/10
Filed: 1992-02-19
Granted: 1999-12-01
Abstract: 식품의 형상이 망가지지 않게 그 식품의 주위에 감아 붙여서 매던지, 봉지상의 식품의 내부에 수용된 여러가지 식품이 이 봉지상의 식품의 아가리를 닫도록 감아 붙이는데 사용하는 가식성 유재에 있어서 대두단백을 주원료로 하여 균질의 가식성 유재를 안정시켜서 제공할 수 있게 하고 또 흡수성이나 저작성이 우수한 동시에 습윤시나 가열시에 있어서 마음대로 늘어나는 일이 없는 가식성 유재를 공급한다. 
     대두단백을 주원료로 하는 가식성 유재를 신장시키도록 하였다.
Patent KR-100213588-B1 (KR)
Title: Creping machine
Inventor: CLELOAD BELIO
IPC: D04H1/44
Filed: 1992-04-02
Granted: 1999-10-01
Abstract: Crimper. 
<??>There is provided between the two strands of each conveyor (17, 17') of a pair of conveyors a sealed box (22, 22'), of which one large face arranged substantially in contact with a working strand of this conveyor is formed from a perforated rigid plate (23, 23'). Means (26, 26') are provided for feeding compressed air into each box (22, 22'). This air, escaping by way of the perforations of these plates (23, 23'), generates an air cushion between each plate and the active part of the conveyor (17, 17'), the effect of this being to reduce considerably the sliding resistance of this conveyor (17, 17') on this plate (23, 23'). 
<??>This arrangement appreciably decreases the tensions in the conveyors, thereby making it possible to crimp wider mats without disadvantage and to simplify the construction. 
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Patent KR-940010400-B1 (KR)
Title: Access circuit and method of target position in a digital control system
Inventor: LEE JANG-HUI
IPC: G05D3/00
Filed: 1992-05-30
Granted: 1994-10-22
Abstract: The digital control system uses a speed profile on the distance variation to a target position to move precisely an object (8) from a position to the target position. The circuit comprises a module (1) to calculate a position variation value from current position data, an arithmetic module (2) to calculate a minimum speed value and a base value for each partitioned section, a lookup table (3) to store a desired minimum speed for each section, an arithmetic module (4) to calculate a desired speed for each section, a module (5) to calculate a current speed, a module (6) to calculate a speed variation, an execution module (7) to contain an analog-to-digital converter.
Patent KR-950013175-B1 (KR)
Title: Degradable resin composition
Inventor: KIM KAWNG-TAE
IPC: C08L23/00
Filed: 1992-06-23
Granted: 1995-10-25
Abstract: The biodegradable resin composition consists of 5-99wt% thermoplastic resin, 0.1-95wt% degradable synthetic aliphatic polyester, 0-85.5wt% starch, and 0.1-20wt% autooxidizing agent. Thermoplastic resin is polyolefin resin, grafted copolymer of polyolefin resin and alpha, beta-unsaturated carboxylic acid, or a mixture of polyolefin resin and less than 50wt% ethylene-vinylacetate copolymer. Degradable synthetic aliphatic polyester is polycaprolactone. Starch is treated with silicone and titanium to substitute hydroxyl group with ether or ester. Autooxidizing agent is fatty acid or fatty acid ester.
Patent KR-100192832-B1 (KR)
Inventor: TAKANO CHIAKI
IPC: H03L7/099
Filed: 1992-08-07
Granted: 1999-06-15
Abstract: 외부로부터 입력되는 클록신호에 제어되고 있는 높은 주파수의 내부클록신호를 발생시키는 클록신호발생회로를 디지털집적회로의 기술만을 이용하여 구성할 수 있도록 한다. 
     발진주파수가 가변의 링오실레이터(10)와, 상기 링오실레이터(10)로부터 부여되는 내부발생클록신호 S fc 를 소정수로 분주(分周)하여 출력하는 분주기(4)와, 상기 분주기(4)로부터 부여되는 분주기 출력신호 S fi 와 외부로부터 부여되는 외부클록신호 S fe 의 주파수와를 비교하는 위상비교기(5)와, 상기 위상비교기(5)로부터 출력되는 업신호 S u 및 다운신호 S D 에 따라서 상기 링오실레이터(10)의 발진주파수를 제어하는 업다운카운터(6)에 의해 클록신호발생회로를 형성한다.