baber/WOPTO huggingface dataset:
Patent KR-890003964-B1 (KR)
Title: Process and apparatus for producing a barbed spiral
Inventor: LEE HO-YONG
IPC: B21F25/00
Filed: 1984-07-02
Granted: 1989-10-14
Abstract: A steel wire and barb pieces are binded by the first binding roller, and then the second and third binding roller ensure the binding of the wires.  A barbed wire entanglements are formed by the forming roller.  The barbed wire entanglements maintained horizontally are set up to be driven into the first vertical guide roller apparatus vertically and the second vertical gudie roller apparatus holds the barbed wire entaglements vertically and guide them into bending roller in a manner to bend the barbed wire entanglements and the wire entanglements to be winded at a bobbin.
Patent KR-910008643-B1 (KR)
Inventor: SUKAHARA KEISING
IPC: C07K1/22
Filed: 1984-10-05
Granted: 1991-10-19
Abstract: 내용 없음.
Patent KR-870000445-B1 (KR)
Title: Thermal printer
Inventor: MASSUSHIMA GEIICHI
IPC: B41J2/355
Filed: 1984-11-24
Granted: 1987-03-11
Abstract: An array of heater elements in th printing head extends along a print line which is perpendicular to the direction of travel of the sheet to be printed. A variegated ink ribbon has a repeated pattern of different colored sections along its length. The drive rollers drive the ribbon lengthwise for a given length whcih is less than the length of a colored section. Each of the yellow, magenta and cyan colored sections is disposed beneath a given number of heater elements of the head. Print control signals and printing information signals are supplied to a controller.
Patent KR-910000275-B1 (KR)
Inventor: OKADA MASATO
IPC: H01L21/027
Filed: 1984-12-08
Granted: 1991-01-23
Abstract: 내용 없음.
Patent KR-890000463-B1 (KR)
Title: Daisy wheel type electric type-writer
Inventor: CHANG MUN-GIL
IPC: B41J7/36
Filed: 1985-02-25
Granted: 1989-03-18
Abstract: The daisy wheel including a number of Korean character spokes has 7 dot spokes for English character in which dot is aligned sequentially in each spoke.  When the Korean typing mode is selected by a mode switch, an one chip microprocessor operates the daisy wheel for typing Korean character.  But when the English mode is selected, the microprocessor controls the 7 spokes of the daisy wheel to type the English character with a dot one.
Patent KR-900001896-B1 (KR)
Title: Heat pump with capillary tube-type expansion device
Inventor: HAMA HIROAKI
IPC: F25B41/06
Filed: 1985-03-16
Granted: 1990-03-26
Abstract: The device includes a heat exchanger (102) connected to the discharge side of a compressor (100), a heat exchanger (103) connected to the suction side of the compressor, a main capillary tube (104) connected between the exchangers and an adjustable arrangement for cooling refrigerant flowing through the tube.  A control valve is connected to the intake side of the capillary tube and is opened and closed by a control unit in accordance with operating conditions.  Auxiliary cooling and heating capillary tubes (109,111) are connected in parallel with the main tube between the exchangers and have a higher resistance to flow than the main tube.
Patent KR-920006760-B1 (KR)
Inventor: KATO MASAMI
IPC: B65C7/00
Filed: 1985-04-10
Granted: 1992-08-17
Abstract: 내용 없음.
Patent KR-890001657-B1 (KR)
Title: Sintering alloy for valve seat and making method of sintering valve seat
Inventor: SO SANG-KI
IPC: C22C33/02
Filed: 1985-04-18
Granted: 1989-05-12
Abstract: The sintering alloy for valve seat comprises 0.7-1.65 wt.% C, 3.0-8.0 wt.% Cr, 1.0-3.0 wt.% W, 5.0-12.0 wt.% Co, 1.0-3.0 wt.% Ni, 0.1-1.0 wt.% MoS2, and the balance Fe, and has the phase structure uniformly dispersing 10-20 vol.% stellite phase including 1.0-3.0 wt.% C, 20-40 wt.% Cr, 10-20 wt.% W and the balance co in the mixture phase of pearlite and martensite.
Patent KR-900005762-B1 (KR)
Title: Ac servo system
Inventor: NAKANISI YOSINORI
IPC: H02P27/00
Filed: 1985-05-31
Granted: 1990-08-09
Abstract: The system for sharing the arithmetic process with two CPUs receives the position and speed data from the feedback loop to calculate the digital servo command. The current magnitude and frequency elements are calculated separately with the servo command and the speed signal provided from the feedback loop and this calculation is performed by an exclusive CPU containing the current and sinusoidal wave data table memories.
Patent KR-940004990-B1 (KR)
Inventor: MORIOKA EDDY T
IPC: G11B23/02
Filed: 1985-06-24
Granted: 1994-06-09
Abstract: 내용 없음.
Patent KR-890005194-B1 (KR)
Inventor: MURAKAI HIDENOBU
IPC: H01J37/24
Filed: 1985-08-08
Granted: 1989-12-16
Abstract: 내용 없음.
Patent KR-930010564-B1 (KR)
Inventor: ARAI SHOJI
IPC: C08G18/18
Filed: 1985-08-21
Granted: 1993-10-28
Abstract: 내용 없음.
Patent KR-910000553-B1 (KR)
Inventor: SIM A-TEE
IPC: H05K13/04
Filed: 1985-09-13
Granted: 1991-01-26
Abstract: 내용 없음.
Patent KR-890004467-B1 (KR)
Title: Semiconductor latch circuit with noise resistance circuit
Inventor: GANAI YASONORI
IPC: H03K3/013
Filed: 1985-11-19
Granted: 1989-11-04
Abstract: The circuit has the noise resistance circuit (8) with a signal delay element filter and an amplifier in the feedback line. The first gate circuit (3) receives a data signal (DT) and a clock signal (CLK). The second gate circuit (1) is connected to the output of the first gate.  The third gate circuit (2) receives an inverted clock signal (CLK) at an input terminal, and is connected to another input terminal of the second gate circuit so that a feedback line is formed between the second and the third gates.
Patent KR-900000096-B1 (KR)
Title: Automatic tracking circuit
Inventor: KIM WAN-HO
IPC: G11B21/02
Filed: 1986-04-15
Granted: 1990-01-19
Abstract: The circuit for automatic tracking of the distance between a reproducting head and a control head by utilizing the video signals picked up at center of the head switching pulse includes a miximum level selector (2) for selecting maximum level of output signals of a switching unit (1) for switching the video signal utilizing the PG signals, a differential amplifying unit (3) for comparing and transmitting voltages according to the selected video signal and the feedbacked signal, a SPDT switching unit (8) operated by the output signals of comparators (5,6) and an integrator (10) for generating the tracking voltage.
Patent KR-950000417-B1 (KR)
Inventor: NISHIMURA KATSUHISA
IPC: G11B15/18
Filed: 1986-07-23
Granted: 1995-01-19
Abstract: 내용 없음.
Patent KR-890004911-B1 (KR)
Title: Method for heating the ground-water
Inventor: YANG JUN-HO
IPC: E03B3/06
Filed: 1986-08-14
Granted: 1989-11-30
Abstract: The water (W) filled in the water pipe (2) which is set in the excavated hot spring (1) flows out thru. a filtration net (2').  The water level of hot spring gradually rises according to the outflowed water and the outflowing speed of water gradually slows down as the water level of hot spring rises.  When the water is up to a cover (6) , which is provided for cutting water off from the atmosphere, the balance between the pressure of the outlet valve (7) and that of water tank (5) is kept up so that the water in hot spring can flow out and be pumped without operation of a water pump.  The water mixed with the thermal water is heated and the rich mineral resources are dissolved in the water.
Patent KR-900005988-B1 (KR)
Title: Limiting the presence of the oxides of nitrogen in regenerative heating system
Inventor: GOODFELLOW JAMES H
IPC: F23L17/14
Filed: 1986-12-09
Granted: 1990-08-18
Abstract: A method for limiting the presence of oxides of nitrogen in the exhaust gas leaving a regenerator during firing comprises injecting water or water vapour into the regenerator during firing and causing the water or water vapour to reach the combustion chamber of the regenerator by way of its heat storage bed which has been preheated during a previous heat collecting phase.  The temp. of the combustion air is sensed after the combustion air leaves the bed but before the combustion air enters the combustion chamber. The water or water vapour is injected into the generator when the sensed temp. of the combustion air is above a preset level.
Patent KR-920005152-B1 (KR)
Inventor: WATANABE YOJI
IPC: H01L27/04
Filed: 1987-02-13
Granted: 1992-06-27
Abstract: 내용 없음.
Patent KR-900003920-B1 (KR)
Title: Black polyester film
Inventor: LEE KYUNG-HUI
IPC: C08J5/18
Filed: 1987-02-24
Granted: 1990-06-04
Abstract: preparing a black polyester master batch chip which has good dispersion of carbonblack by mixed moulding of usual polyester chip not contg. carbonblack, carbonblack, dispersion agent ant heat stabilizer; then mixing, melting and extrusion drawing the obtd. master chip together with a new polyester chip not contg. carbonblack.
Patent KR-950009857-B1 (KR)
Inventor: FUJII SETSURO
IPC: C07D401/12
Filed: 1987-03-30
Granted: 1995-08-29
Abstract: 내용 없음.
Patent KR-900000316-B1 (KR)
Title: Device for manufacture of comport
Inventor: HAN YONG-BAE
IPC: C02F11/12
Filed: 1987-04-18
Granted: 1990-01-25
Abstract: The device for manufacturnig compost comprises a cylindrical drum (6) , which is rotating with a sprocket connected to a driver, a injection pipe (17) for injectioning warmth, and a ventilation pipe (20) which is connected to a ventilation fan (19) for discharging warmth.  The screw blades (8)(8') are formed in the cylindrical drum to be opposite to each other.  Fixed screws (29)(29') are fixed at a center shaft (7) to be opposite the screw blades, so that the raw materials of compost are mixed and pulverized during rotation of the cylindrical drum.
Patent KR-950002991-B1 (KR)
Inventor: SAKAKIBARA SHIRO
IPC: B60W10/04
Filed: 1987-05-06
Granted: 1995-03-29
Abstract: 내용 없음.
Patent KR-910002818-B1 (KR)
Inventor: IYWASAKI HIROSHI
IPC: H01L21/265
Filed: 1987-05-09
Granted: 1991-05-04
Abstract: 내용 없음.
Patent KR-900003498-B1 (KR)
Title: Process for the preparation of phorphyrine derivatives
Inventor: HAN MAN-JUNG
IPC: C07D487/22
Filed: 1987-07-25
Granted: 1990-05-21
Abstract: A process for prepg. porphyrine derivs. comprises (a) drying silkworn droppings in the shade and pulverizing to above 500 mesh, (b) impregnating in ketone, alcohol or these mixt. for 1-2 day at 20-120 deg. C, (c) cooling, sepg. solvent and concg., (d) pptg. with nonpolar solvent (i.e. petroleum ether, hexane, heptane), allowing to stand for 1 day at 0-5 deg. C and filtering, and (e) methylating in MeOH in the presence of catalytic amts. of strong acid i.e. HCl, H2SO4
Patent KR-900005380-B1 (KR)
Title: Making process for silicon plate
Inventor: BAE MYUNG-KEUN
IPC: C21D8/12
Filed: 1987-12-28
Granted: 1990-07-28
Abstract: The steel sheet is made by hot rolling, preliminary annealing and first cold rolling a steel slab comprising (by wt.) up to 0.01% C, 0.1-0.6% Si, 0.1-1.0% Mn, up to 0.05% P, up to 0.007% S, up to 0.01% Al, 0.01-0.3% Sb and the balance Fe with incidental impurities, and skin pass rolling to 3-10% after continuous annealing at 700-750 deg.C for 10 sec.-5 min. The steel sheet has excellent magnetism.
Patent KR-950009519-B1 (KR)
Inventor: IKEBE TATSUYA
IPC: A01N47/38
Filed: 1988-01-21
Granted: 1995-08-23
Abstract: 내용 없음.
Patent KR-960015016-B1 (KR)
Title: Tread for radial tire
Inventor: LAGNIER ALAIN
IPC: B60C11/12
Filed: 1988-03-10
Granted: 1996-10-24
Abstract: In order to improve the wear life of a tread having elements in relief which are provided with numerous incisions, each element in relief which is defined by circumferential grooves and transverse grooves comprises an even number of incisions which have rectilinear traces on the surface of the tread and, in cross-section, broken line or undulated line traces, the mean axes of which are perpendicular to the surface of the tread, and in such manner that the trace of one incision is identical to the symmetrical trace, with respect to its mean axis, of the trace of a circumferentially adjacent incision.
Patent KR-910006243-B1 (KR)
Inventor: IZUKA YASUO
IPC: H01L31/0216
Filed: 1988-04-30
Granted: 1991-08-17
Abstract: 내용 없음.
Patent KR-910005486-B1 (KR)
Inventor: YAMAMOTO TAKAHARU
IPC: G10L13/00
Filed: 1988-06-04
Granted: 1991-07-31
Abstract: 내용 없음.
Patent KR-960014903-B1 (KR)
Inventor: ALLEN ROBERT HALL
IPC: C01B33/029
Filed: 1988-09-03
Granted: 1996-10-21
Abstract: 내용없음.
Patent KR-920005865-B1 (KR)
Inventor: KOICHIRO MAEMURA
IPC: H04L1/00
Filed: 1988-10-10
Granted: 1992-07-23
Abstract: 내용 없음.
Patent KR-920000415-B1 (KR)
Inventor: VOLDER REIFFENRATH
IPC: G02F1/133
Filed: 1988-11-29
Granted: 1992-01-13
Abstract: 내용 없음.
Patent KR-970006072-B1 (KR)
Title: Configuration set of an electromagnetic brake and its supplying means
Inventor: EVEN DENIS
IPC: H02K49/04
Filed: 1989-02-24
Granted: 1997-04-23
Abstract: An assembly is provided formed by an electromagnetic vehicle retarder and its electric supply means, where the retarder has a rotor (2) mounted on the output shaft of the gearbox of the vehicle and a stator (13) cantilevered on the casing of this gearbox. The armature (5) of the retarder forms part of the stator and is cooled by water and its inductor (4), which forms part of the rotor, is fed electrically by an alternator whose rotor (13) and stator (14) are secured respectively to the rotor (2) and the stator (3) of the retarder.
Patent KR-960009681-B1 (KR)
Title: Process for the preparation of tertiary carbinols containing an aminic substituent
Inventor: BELLASIO ELVIO
IPC: C07C217/66
Filed: 1989-03-02
Granted: 1996-07-23
Abstract: A process for the preparation of tertiary diphenyl carbinols containing a primary or secondary amine substituent on the aliphatic moiety attached to the carbinol function which consists in contacting a Grignard phenyl reagent with an aminoacid wherein the mobile protons are not masked in an aprotic inert organic solvent or a mixture thereof at a temperature between 20 DEG C and the boiling temperature by the reaction mixture. The reaction products are useful as active ingredients of medicaments and intermediates for the manufacture thereof.
Patent KR-0132713-B1 (KR)
Inventor: SHINTANI YOSHIO
IPC: H01L21/822
Filed: 1989-06-28
Granted: 1998-04-16
Abstract: 내용 없음.
Patent KR-940006330-B1 (KR)
Inventor: VALENTE PIETRO
IPC: E04F21/18
Filed: 1989-11-16
Granted: 1994-07-16
Abstract: 내용 없음.
Patent KR-910009204-B1 (KR)
Title: Method of making self stabilized dipeptide sweetners
Inventor: TSAU JOSEPH H
IPC: A23L27/30
Filed: 1988-07-14
Granted: 1991-11-05
Abstract: A method for the production of a self stabilized composition of dipeptide sweeteners useful in cooking and baking applications yields dipeptide granules of substantially uniform spherical shape that fall within a narrow particle size distribution range. The granules produced thereby possess both heat stability and a sustained release mechanism that insures proper and uniform dissolution and dispersion within the baked product. The heat stability is then further enhanced by a pH buffer or weak acid in the granule or by encapsulating said granule with fat, protein, starch or other polymers.
Patent KR-960000032-B1 (KR)
Inventor: HAKAO YASUMASA
IPC: C03C3/091
Filed: 1988-09-30
Granted: 1996-01-03
Abstract: 내용 없음.
Patent KR-920010057-B1 (KR)
Inventor: NIEDA YORIYUKI
IPC: H01J61/067
Filed: 1990-01-11
Granted: 1992-11-13
Abstract: 내용 없음.
Patent KR-930002827-B1 (KR)
Inventor: KULP RODNEY
IPC: A61B17/12
Filed: 1990-03-21
Granted: 1993-04-10
Abstract: 내용 없음.
Patent KR-100187785-B1 (KR)
Inventor: KURODA TAKASHI
IPC: B29C55/00
Filed: 1990-04-04
Granted: 1999-06-01
Abstract: 내용없음.
Patent KR-100222745-B1 (KR)
Title: Circuit configuration for identification of integrated semiconductor circuit
Inventor: PRIBYL WOLFGANG
IPC: H01L21/66
Filed: 1990-06-29
Granted: 1999-10-01
Abstract: A circuit configuration for the identification of integrated semiconductor circuitries includes n programmable elements. A common line is connected to the programmable elements. An n-stage serial-parallel shift register has a data input, n parallel outputs, and a clock input for controlling a shift function of the serial-parallel shift register as a function of a clock signal to be applied to the clock input. Transistors each have a drain connected to a respective one of the programmable elements, a source connected to a supply potential, and a gate connected to a respective one of the parallel outputs of the serial-parallel shift register. Instead of n-stage serial-parallel shift register, it is also possible to use a clocked n-stage oscillator, such as a ring oscillator, or an n-stage counter, such as ring counter.
Patent KR-0169964-B1 (KR)
Title: Video signal processor device
Inventor: WILLIAN ADANSON LAGONI
IPC: H04N5/202
Filed: 1990-08-22
Granted: 1999-03-20
Abstract: A television system is disclosed including sections for limiting peak white drive to a display device (e.g., of the direct view or projection type) while maintaining relatively high subjective image contrast and brightness. Specifically, the system includes an automatic contrast control section (29,31,33,9) for controlling the amplitude of the luminance signal in response to the peak value of a luminance-representative image component signal preceded by a "white-stretch" control section (5) for emphasizing mid-range luminance components relative to high-range luminance components as a function of the average value (35) of the luminance-representative image component. In this was, spot blooming and display driver saturation can be minimized while providing subjectively sharp, bright pictures.
Patent KR-940005958-B1 (KR)
Inventor: BARNISH IAN T
IPC: C07B61/00
Filed: 1990-11-15
Granted: 1994-06-25
Abstract: 내용 없음.
Patent KR-940002503-B1 (KR)
Inventor: HORIKAMI KINZI
IPC: G01N21/956
Filed: 1990-11-17
Granted: 1994-03-25
Abstract: 내용 없음.
Patent KR-100196610-B1 (KR)
Title: Pharmaceutical compositions of tebufelone
Inventor: KELM HARY ROBERT
IPC: A61K47/34
Filed: 1990-11-20
Granted: 1999-06-15
Abstract: The subject invention involves compositions consisting essentially of the drug active 1-3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl-5-hexyn-1-one (tebufelone) at a concentration of at least about 15%, and the balance a pharmaceutically-acceptable vehicle. The vehicle is formulated such that the compositions are homogeneous liquids at 37 DEG C and provide good solubilization of the drug active.
Patent KR-940002490-B1 (KR)
Inventor: TANAKA TADASHI
IPC: F16C33/06
Filed: 1990-11-23
Granted: 1994-03-25
Abstract: 내용 없음.
Patent KR-910001344-B1 (KR)
Inventor: CHU MIKE S H
IPC: C04B35/00
Filed: 1990-11-23
Granted: 1991-03-04
Abstract: 내용 없음.
Patent KR-930010505-B1 (KR)
Inventor: KOSHIDA HITOSHI
IPC: C09B67/22
Filed: 1990-12-06
Granted: 1993-10-25
Abstract: 내용 없음.
Patent KR-930002476-B1 (KR)
Inventor: KAJITA YUSUKE
IPC: F15B11/00
Filed: 1989-08-31
Granted: 1993-04-02
Abstract: 내용 없음.
Patent KR-100224527-B1 (KR)
Inventor: BRUSSELMANS JACQUES HUBERT FRA
IPC: C09J/
Filed: 1989-11-09
Granted: 1999-10-15
Abstract: 적어도 하나의 케이블 둘레를 밀봉하는 시일(sael)에 있어서, 2개의 단부 플레이트와, 상기 2개의 단부 플레이트 사이에 배치된 밀봉재료를 포함하며; 상기 각각의 단부 플레이트는 내부 부재와, 사용시 상기 내부 부재 둘레에 실질적으로 동축으로 배치되는 하나 또는 그 이상의 외부 부재를 포함하고, 상기 내부 부재와 상기 외부 부재내에는 적어도 하나의 케이블 출구가 각각 부분적으로 배치됨으로써 상기 내부 부재와 상기 외부 부재가 접근 이동할 때 폐쇄된 단면의 출구를 형성하며, 상기 2개의 단부 플레이트는 사용시 상기 케이블 출구를 통해 연장되는 케이블에 대해서 서로를 향하여 축방향으로 이동함으로써, 상기 밀봉재료를 축방향으로 압축시키고 그에 따라 상기 밀봉재료를 케이블에 대해 방사상 방향의 내측으로 변형시키는 케이블 밀봉용 시일.
Patent KR-950010980-B1 (KR)
Inventor: JEAN FRANCOIS FIARD
IPC: G11B5/71
Filed: 1990-03-02
Granted: 1995-09-26
Abstract: 내용 없음.
Patent KR-940006623-B1 (KR)
Title: Image signal processing system
Inventor: KIM JONG-HUN
IPC: H04N9/64
Filed: 1991-02-01
Granted: 1994-07-23
Abstract: The video signal processing circuit is for increasing resolution of video signal by compensating contour of color signal and brightness signal and by expanding horizontal frequency band. The system includes a luminance signal processing circuit (10) for decreasing transmission time of input luminance signal, for compensating horizontal edge and for amplifying low level input signal, a color signal processing circuit (20) for expanding frequency band of input color signal, and an output circuit (30) for outputting processed color signal and luminance signal.
Patent KR-0172965-B1 (KR)
Title: Preparation of 5,7-dihydroxy-1,2,4-triazolo(1,5-a)-pyrimidine-2-sulfonanilide
Inventor: SHANKAR RAVI B
IPC: A01N43/90
Filed: 1991-02-25
Granted: 1999-02-01
Abstract: 5,7-Dihydroxy-N-(aryl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides of formula <CHEM>  wherein  X represents H, F, Cl, Br, alkyl or alkoxy,  Y represents H, F, Cl or Br,  R represents H, alkyl or alkyoxy,  Z represents H, Cl or Br,  are prepared by cyclization of N-(3-(((aryl)amino)sulfonyl)-1H-1,2,4-triazol-5-yl)amines with malonyl halides under acidic conditions. With the addition of a phosphorus oxyhalide, malonic acid can be used in place of the malonyl halides and the 5-7-dihydroxy-1,2,4-triazolo[1,5-a]pyrimidine can be directly converted to the corresponding 5,7-dihalo derivative.
Patent KR-0182268-B1 (KR)
Title: Azabicyclo oxime, azabicyclo amine, azacyclo oxime, azacyclo amine cholinergic agents and the pharmaceutically compositions containing the same
Inventor: LAUFFER DAVID JEFFREY
IPC: A61K31/407
Filed: 1991-03-05
Granted: 1999-05-01
Abstract: Pharmaceutically useful nitrogen containing cyclic oxime and amine substituted compounds of the formula <CHEM> which are azabicyclo[2.2.1]oximes, azabizyclo[2.2.2]oximes, azabicyclo[2.2.1]amines, azabicyclo[2.2.2]amines, azabicyclo[3.2.1]oximes and amine containing heterocyclic oximes wherein the heterocyclic ring contains from 3 to 7 carbon atoms. These compounds are useful as analgesics and for the treatment of cognitive decline in a patient.
Patent KR-950003551-B1 (KR)
Inventor: HIROI KAZUO
IPC: G05B11/42
Filed: 1991-03-09
Granted: 1995-04-14
Abstract: 내용 없음.
Patent KR-950005170-B1 (KR)
Inventor: YOSHIDA YOSHIHIRO
IPC: H03F3/30
Filed: 1991-05-09
Granted: 1995-05-19
Abstract: 내용 없음.
Patent KR-930007979-B1 (KR)
Title: Middle tone picture display method
Inventor: KANG KU-SU
IPC: H04N1/27
Filed: 1991-05-27
Granted: 1993-08-25
Abstract: The  edge  of   a   letter   is   emphasized   to   increase decipherability and the image data is transmitted at high speed by a dithering method which  uses  wave  dither  matrix.  The  method comprises the steps of: (A) scanning a manuscript  by  pixel  unit and storing the scanned data on a buffer; (B) deciding  the  local brightness difference of the current scan data; (C) discriminating edge by inspecting that the brightness difference is  larger  than local inverse value; (D) converting half tone to  white  when  the brightness difference is larger than local inverse value  and  the current pixel is brighter  than  local  brightness  and  otherwise converting to black; and (E) discriminating that current pixel  is not edge when local  brightness  difference  is  less  than  local inverse value and coding the current pixel by binary code.
Patent KR-930003904-B1 (KR)
Title: Method for preparation of tobacco filter
Inventor: YU KWANG-KUN
IPC: A24D3/06
Filed: 1991-09-20
Granted: 1993-05-15
Abstract: The cigarette filter is prepd. by (a) treating ginseng  waste with 0.1-3.0  %  flavor-retaining  agent,  e.g.  propyleneglycol, glycerin,  balsam,  benzylbenzonate,  benzoin,  benzyl   cinnmate, triacetin, triethyl citrate etc., (b)  drying  the  obtd.  ginseng waste at 30-40 deg.C and pulverizing to obtain 16-400 mesh powder, and (c) heating the obtd. powder at 65-70  deg.C  for  1  hr.  and adding into the filter with active carbon,  zeolite,  silica  gel, alumina or magnesium silicate to obtain the final product.
Patent KR-940005879-B1 (KR)
Title: Color plasma display element and manufacturing method thereof
Inventor: KIM DAE-IL
IPC: H01J11/32
Filed: 1991-09-26
Granted: 1994-06-24
Abstract: The device applies to a high resolution image display device. The method includes a 1st step which forms a lst positive electrode (20) by a stripe shape on a front plate (10), a 2nd step which forms a 1st insulation layer (20a) of a dot shape on the 1st postitive electrode (20), a 3rd step which forms a 2nd positive electrode (20') between 1st positve electrodes, a 4th step which forms a 2nd insulation layer (20a') of a dot shape on a 2nd postive electrode (20'). The device has negative and positive electrodes of stripe shape on a X-Y matrix shape between the front plate and the back plate.