baber/WOPTO huggingface dataset:
Patent JO-3265-B1 (JO)
Title: Pyridyloxyindoles Inhibitors of VEGF-R2 and Use Thereof for Treatment of Disease
Inventor: ERIK MEREDITH
IPC: A61P35/00
Filed: 2009-12-06
Granted: 2018-09-16
Abstract: The invention relates to novel organic compounds of formula (I) (I) and their use in the treatment of the animal or human body, to pharmaceutical compositions comprising a compound of formula I and to the use of a compound of formula I for the preparation of pharmaceutical compositions for use in the treatment of protein kinase dependent diseases, especially of proliferative diseases, such as in the treatment of tumour diseases and ocular neovascular diseases.
Patent JO-2780-B1 (JO)
Title: New benzothiadiazepine Compounds, a Process for their Preparation and Pharmaceutical compositions containing them
Inventor: ALEXIS CORDI
Filed: 2010-03-02
Granted: 2014-03-15
Abstract: Compounds of formula (1): wherein: RI and R2. which may be the same or different, each represent a hydrogen or halogen atom or an alkyl, alkoxy, alkylthio, acyl, alkoxycarbonyl, carboxy, hydroxy, hydroxyalkyl, cyano, nitro, amino, substituted or unsubstituted aminocarbonyl, aminosulphonyl, alkylsulphonylaminoalkyl, N-hydroxy- carboximidamide or benzyloxy group, R3 represents a hydrogen atom or an alkyl, cycloalkyl or cycloalkylalkyl group, R4 represents a hydrogen atom or a substituted or unsubstituted alkyl group Medicaments.
Patent KR-790000666-B1 (KR)
Title: Process for preperation of bis( hidroxyethyl) terephthalate and low-polymer
Inventor: SHIRATSUJI YOSHIAKI
Filed: 1975-08-06
Granted: 1979-06-20
Abstract: Title compds. were continuously prepd. by esterification of terephthalic acid(II) and ethylene glycol(III) in the reaction tank, and then II in the residual gas was recirculated by washing with liq. III in a vertical down flow rectifier in the center while maintaining the temp. above the dew point of III. III in the residue gas was washed in distillation tank and fed back to first.
Patent KR-810000262-B1 (KR)
Title: Process for brasquing fused electrolysis cells
Inventor: SALA JEAN MARIE
IPC: C04B35/52
Filed: 1977-01-12
Granted: 1981-03-26
Abstract: In brasquing the bottom and wall of alumina fusion electrolysis bath from the recovery of a used brasque by treatng refractory products containing carbon ground at the bottom and wall filtering insoluble components.  The brasquing method is: the step to cover the bottom and wall of the bath with heat insulate bed composed of the mixture of C, NaF, CaF2, Al2O3, Na2SO4, and CaSO4, and the other step to supply the feeder equipment to negative electrode equipment settled on heat insulate bed composed of the mixture of C, NaF, CaF2, Al2O3 Na2O and bonding materials.
Patent KR-810001335-B1 (KR)
Title: Pulse system separation circuit for electric energy measurement device
Inventor: KAWAHUNE MICHIO
IPC: G01R11/00
Filed: 1977-10-29
Granted: 1981-10-14
Abstract: Pulse system separation circuit for electric energy measurement device comprises: a) A wattmeter(1) has the sender to send oscillating output of the oscillator. b) Delay circuit(9) is connected the first second pulse detection trans (5,6) and the second pulse detection trans in two phase line. c) logical add circuit(10) formed output of the first pulse detection trans(5) which has delay circuit output. d) Flipflop circuit (12) is consisted the first AND, circuit output of the fixing input and the second AND2 circuit output of the return input.
Patent KR-790000073-B1 (KR)
Title: Process for producing polyester crimpfibre
Inventor: KIM J H
Filed: 1977-12-23
Granted: 1979-03-07
Abstract: Polyester crimpfibers were prepd. by cooling polyester hollow fibers after spinning.  Polyester was spun through a ring type nozzle, was intermittently and asym. blown with 15≰C air at a rate of 1.5 m/sec below the nozzle to give 24-denier fibers with 20-30 crimps/in., crimping degree 40-60%, more than 20% voids, and more than 85% bulkiness.  The product was used in overquilts with good bulkiness.
Patent KR-810001668-B1 (KR)
Title: Bottle closure for sales promotion
Inventor: MURAYAMA KASHIWA
IPC: B65D41/02
Filed: 1978-01-19
Granted: 1981-10-27
Abstract: According to this invention the bottle closure is used repeatedly.  Center positioned part of a gasket in the bottle closure can be easily removed with the main closure part left.  Closure body(1) is composed of outer material(2) and gasket(5) whose materials are composed of various synthesis resins-polyethylene, polypropylene, butadiene rubber, and poly vinyl chloride, etc.
Patent KR-800000051-B1 (KR)
Title: A method for use in ripbaping by barge
Inventor: YOO HO MUN
IPC: B63B25/04
Filed: 1979-02-17
Granted: 1980-01-28
Abstract: The method which is characterized submerged water was drained through the waterpipe (P) by injecting the compressed air to the submerged compartments (C1, C2) by means of the compressor (CP) or driving the motor (M), was composed of separated compartments (C1, C2) leaning to the underwater by discharging the compressed air from valves (V1, V2, V3), and opposite compartments (C3, C4) casting away the riprap to the underwater by raising above the sea level.
Patent KR-830000171-B1 (KR)
Title: 전자(電磁) 클러치
IPC: F16D27/10
Filed: 1979-05-09
Granted: 1983-02-17
Abstract: 내용 없음.
Patent KR-830000325-B1 (KR)
Title: Process for preparing naphthyridine derivatives
Inventor: MASUMOTO JUNICHI
IPC: C07D471/04
Filed: 1979-09-06
Granted: 1983-03-04
Abstract: The antibiotic 1,8-naphthyridine derivatives(I; R1 = Et,. vinyl) were prepd. by removing protecting group R3 of II(R2 = carbonyl, lower alkoxy carbonyl, cyano, carbamoyl, amidino, C-(O-lower alkyl)=NH; R3 = H or protecting group) and hydrolyzing R2 of II. Thus, 3.48 g ethyl-l-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-1,8-naphthyridine-3-carboxylate in 300 ml of 5% NaOH was heated at 30≰C. The reactant was adjusted to pH 7 and recrystallized with a mixt. of ethanol and chloroform to give 3.0 g I(R1 = Et).
Patent KR-840000684-B1 (KR)
Title: Control circuit of ignion timing for internal combustion engine
Inventor: SUGIURA NOBORU
IPC: F02P5/04
Filed: 1979-11-23
Granted: 1984-05-18
Abstract: An ignition timing control system for an internal combustion engine has a circuit to generate a reference ignition signal synchronously with the engine, a circuit to generate a reatard ignition signal at a point shifted by a selected shaft angle of the engine from the reference ignition signal, and an ignition circuit to control the ignition timing of the engine according to the retard ignition signal.
Patent KR-810000959-B1 (KR)
Title: Spinneret for preparing a highly lustering filament
Inventor: CHOI KYUNG SOO
IPC: D01D4/02
Filed: 1980-05-17
Granted: 1981-08-24
Abstract: A triangle sectional spinneret of inventions is claimed to be melt spun with the linear polymers of the polyamide, or the polyester to manufacture the filament having a high-lustering and a soft-handling property like a silk.  The triangle shaped orificers which are surrounded with the three slits in a circle, and the form of spinneret comprises the following equation, l1+d/2<=l2<=l1+3/2d, when each diameter of slits is α and the distance from O (centripetal point of the spinnerret) to ρ(point of the triangle) is l1, and distance from ends of the slits to point of the triangle is l2.
Patent KR-830001304-B1 (KR)
Title: 방향족 디카복실산의 제조방법
IPC: C07C51/265
Filed: 1980-07-01
Granted: 1983-07-06
Abstract: 내용 없음.
Patent KR-850001539-B1 (KR)
Title: Current mode biquadratic active filter
Inventor: PACE GARY LEE
IPC: H03H11/04
Filed: 1981-05-19
Granted: 1985-10-16
Abstract: The filter for an integrated circut functions as a biquardratic active filter and one-port impedance. It also has transfer functions for two-port voltage, two-port current and two-port impedance. The device comprises two current amplifiers, which operate as a first low-pass filter, and are used in feedback for a negative current; a bias source, which controls the low-pass characteristics of the two amplifiers; an input mechanism, which receives input current ; and an output mechanism.
Patent KR-880002424-B1 (KR)
Title: Horizontal phase lock loop for television
Inventor: MCGINN MICHAEL
IPC: H04N5/12
Filed: 1981-12-29
Granted: 1988-11-08
Abstract: A horizontal phase lock loop for use in a TV receiver comprises two loops and a horizontal oscillator which generates a ramp signal at a frequency of twice the line frequency.  The first loop looks the oscillator signal to the horizontal synchronization pulses.  The oscillator output is sliced and then divided by two to achieve a fifty percent duty cycle drive waveform to the phase detecter in the first loop and to a phase detector in the second loop.  The second loop includes a variable slicer which operates on the oscillator ramp signal so as to lock the flyback signal generated by the horizontal output stage to the second phase detector's switching waveform.
Patent KR-880002579-B1 (KR)
Title: Microprocessor control of inverter power transistor with dc. content correction
Inventor: SHUEY KENNETH C
IPC: H02M7/5387
Filed: 1982-01-15
Granted: 1988-11-30
Abstract: In the device, the switching intervals for the power transistors are generated as multiples of clock pulse intervals by a microprocessor, AC output, DC content detection and control is provided separately for each phase by modulation of the duration of the switching intervals through adjustment of the length of the sequences, by multiples of the clock pulses, of instructions carried out by the microprocessor.  The microprocessor repetitively performs selected sequences of operating instructions, each of which requires a preset number of clock pulses to generate binary output signals.
Patent KR-860000438-B1 (KR)
Title: A receiver
Inventor: NINAGAWA CHIKAYOSHI
IPC: C09K11/02
Filed: 1982-03-19
Granted: 1986-04-19
Abstract: Transmissivity and reflectivity are controlled for good contrast and little eye strain in the monochromic television receiver. The transmissivity of the screen glass is made to be 17 - 23 %, and the reflectivity from outside 7±1 %. Black or darkcolored fluorescent layer is coated on the inner wall of the screen glass, of which transmissivity is less than 32%. The coloring agent is black Fe2O3, of which amount is 2.5 - 3 wt.%.
Patent KR-860000819-B1 (KR)
Title: A fluorescent lamp
Inventor: KAMEI TAGETO
IPC: F21S2/00
Filed: 1982-06-02
Granted: 1986-06-28
Abstract: A fluorescent lamp comprised a tap(12), a ballast (6) in an open housing case (10), a curved tube (14), and a globe (24). A ballast housing (33) was separately seated in the globe. It was made to be ventilated through an air-breather (26). The globe was made to be ventilated through another air-breather (36). The ballast housing and the globe were consecutively cooled by the air through the air- breathers.
Patent KR-870001521-B1 (KR)
Title: Process for preparing n-aryl-piperazine alkanamides
Inventor: DAELE GEORGE V
IPC: C07D317/16
Filed: 1982-06-14
Granted: 1987-08-22
Abstract: N-aryl-piperazinealkaneamide [I; R1=H or lower alkyl; X=hydroxy lower alkyl lower alkyl, aminocarbonyl, mono-, di-(lower alkyl) aminocarbonyl, carboxyl, lower alkyloxy carbonyl, caminocarbonyl) lower alkyl, carboxylower alkyl, and (hydroxylower alkyl) aminocarbonyl; R3, R4, R5=H, hydroxy, lower alkyl, lower alkyloxy, halo, trifluoromethyl or (aminocarbonyl) amino; R=III or -Alk-Q; Ar1, Ar2=aryl; Alk=alkanediyl or lower alkanediyl; Q=aryl, aryloxy, diarylmethoxy, 2,2-diarylethenyl or arylcarbonyl! was prepd. by reaction of (II) and R-W.  (I) increases the oxygen tension (pO2) of coronary sinus venous blood on oral or i.v. admin.
Patent KR-850001201-B1 (KR)
Title: Composition of check plug for outflow of molten metals
Inventor: CHON SE-YONG
IPC: C21C5/46
Filed: 1983-04-15
Granted: 1985-08-20
Abstract: The composition of a check plug in the outflow of molten metals consists of SiO2 of over 95 wt.%, Al2O3 of 2.5-4.0 wt.%, R2O of 1.5- 2.5 wt.% (where R2O is K2O and Na2O). The composition is mixed and fired at proper temperature. The particle-size distribution of the product is above 2.0 mm at below 5%; 1.0-2.0 mm at 60-30 %; 0.5-1.0 mm at 30-60 %; and 0.5 mm at below 5%.
Patent KR-850000924-B1 (KR)
Title: Process for preparing epoxides from unsaturated hydrocarbons by regioselective expoxidations
Inventor: KIM YONG-HAE
IPC: C07D301/12
Filed: 1983-06-22
Granted: 1985-06-28
Abstract: Epoxy compound is prepared from unsaturated hydrocarbons (I) and nitrobenzene sulfonyl chloride by means of reaction with peroxide (II) of which formula is RO2 in the presence of organic solvent such as acetonitrile under -20 - -35≰C temperature below the melting point; where R = sodium or potassium. (I) is 1,8-p-mentadiene, p- menta-6,8-diene-2-on, 4-(2,6,6-trimethyl-2cyclohexenyl)-butyn-2-on, 4-(2,6,6-trimethyl-1-cyclohexenyl)butyn-2-on, 5-vinyl-2-norborene, 1,1-diphenyl ethylene, 1,2-diphenyl ethylene, or benzal acetophenone.
Patent KR-870000263-B1 (KR)
Title: Tea manufacturing methods with corn extracts
Inventor: YUN JAE-KUK
IPC: A23F3/00
Filed: 1983-06-24
Granted: 1987-02-23
Abstract: A tea, which has the same flavor and taste as the drinking water boiled in a kettle where rice has been steamed, was manufd. from corn. Thus, raw material of corn was steamed to peel off the outer membrane, washed, boiled at 100 C for 2h, gelatinized, dried(water content<=12%), sealed, let stand for 20h (water content <= 14-15%), and roasted at 14-15kg/cm2 to give final product.
Patent KR-920009011-B1 (KR)
Inventor: TULTS JURI
IPC: H03J7/06
Filed: 1983-08-31
Granted: 1992-10-12
Abstract: 내용 없음.
Patent KR-860000635-B1 (KR)
Title: A electron guns
Inventor: KO NAM-JE
IPC: H01J29/48
Filed: 1983-12-31
Granted: 1986-05-24
Abstract: A triode of electron gun used for cathode-ray tube includes a spherical cathode(1) and the first grid(2) with auxiliary V-type concaved grid(2b). When the cathode is heated by the heater, thermal electrons are emitted and distributed on spherical cathode as an electron-cloud of space charge, and then the electric field(5) resulted from the first grid with auxiliary grid is distributed along the spherical surface of the cathode uniformly, and the homogeneity of the emission density is provided. A required perveance is P=(Ib/ (Vb)3/2) where IB is beam-current, VB is the second grid voltage. And the curvature of spherical cathode is θ=f(d/Rc).
Patent KR-900004423-B1 (KR)
Title: Extraction of teichomycin a2 arom whole culture fermentation broth
Inventor: SNIPES CARL E
IPC: A61K35/74
Filed: 1984-10-11
Granted: 1990-06-25
Abstract: A process for extracting teichomycion A2 (I) from a whole culture fermentation broth contg. a mycelial mass comprises (a) mixing the broth with a water miscible solvent, (b) sepg. the liquid from the mycelial mass, and (c) pptg. and sepg. (I) from the liquid. The solvent is acetone, 3-propanol, acetonitrile, dimethylsulphoxide, methylethylketone or its mixt. The acidity of the broth is pref. pH 3-4.
Patent KR-920007110-B1 (KR)
Inventor: GARTNER HANS
IPC: G05B7/02
Filed: 1984-10-20
Granted: 1992-08-24
Abstract: 내용 없음.
Patent KR-890003032-B1 (KR)
Title: Voltage converting circuit
Inventor: TAKEMAE YOSHIHIRO
IPC: H03K19/00
Filed: 1984-10-24
Granted: 1989-08-19
Abstract: The voltage division ratio provided by the conversion circuit is determined in one embodiment by a pair of N-channel MIS transistors which are connected in series with resistances.  A predetermined proportion of the supply voltage is output from the junction node of the two resistances to the gate of the output Nchannel MIS transistor.  The transistors are all formed by the same processes on a semiconductor substrate and are therefore considered to exhibit the same threshold voltage.
Patent KR-890001315-B1 (KR)
Title: Card read apparatus
Inventor: INOMADA MASASI
IPC: G06K7/00
Filed: 1984-10-31
Granted: 1989-04-29
Abstract: The card reader is for reading informations about the testwill-be high pressure gas cylinder written on a punch card.  The card contains n x n information bits and n trigger bits which are placed one by one to every n row on upper side of the card.  Then, reverse insertion of the card whose side is turned over causes a misreading. The reader includes a discriminating cct. for determining the advance direction of the card, a reversible counter for counting the trigger bits up/downwardly according to the advance direction of the card, and a latch cct. for storing information bits sequentially in unit of row.
Patent KR-920007845-B1 (KR)
Inventor: HAGIUND RICHARD E
IPC: B64F1/36
Filed: 1984-11-17
Granted: 1992-09-18
Abstract: 내용 없음.
Patent KR-920000762-B1 (KR)
Title: Process for preparation of benzothiazine derivatives
Inventor: REINER HENNING
IPC: C07D417/12
Filed: 1984-12-26
Granted: 1992-01-21
Abstract: Benzothiazine derivatives of the formula I    <IMAGE>  (I)  with (R(1), R(1)', R(1)'', R(4) and R(4)' equal to hydrogen, alkyl, alkoxy, halogen, nitro, hydroxyl, acetamido or amino; R(2) equal to hydrogen, alkyl, alkenyl, phenyl; R(3) equal to hydrogen, alkyl, alkenyl, phenyl; R(5) equal to hydrogen or (C1-C3)-alkyl; R(6) equal to one of the following groups,   <IMAGE>   <IMAGE>  with R(7) and R(8) equal to hydrogen, alkyl, cycloalkyl, phenyl; R(9) equal to hydrogen, alkyl, phenyl, pyridyl, pyrimidinyl or benzoyl; R(10) equal to hydrogen, alkyl, phenyl; R(11) equal to hydrogen, hydroxyl, alkoxy or, together with R(12), a bond; and R(12) equal to hydrogen or, together with R(11), a bond; m equal to 1, 2, 3 or 4; n equal to 0 or 1; p equal to 0, 1, 2, 3 or 4, and X equal to oxygen or two hydrogen atoms, and salts of the compounds of the formula I with physiologically tolerated acids and a process for the preparation of compounds I, likewise a method of treatment of disturbances of the calcium balance of a human body are described.
Patent KR-870001667-B1 (KR)
Title: Method of formating table angle
Inventor: JANG SUNG-HWAN
IPC: B27M3/00
Filed: 1985-05-31
Granted: 1987-09-21
Abstract: This invention relates to the forming method of the edge of a table in order that the edge is made of the same material as the surface. The forming method is as follows; the mixture which is made by mixing the polyurethane resin 30%, polyphenol resin 30%, stone powder 20%, pigment 10% and hardening agent 10% is poured into the outer mold. After 30 minutes, the mold is removed and the edge of the table is polished.
Patent KR-880002449-B1 (KR)
Title: Spectacles with fastening device
Inventor: CZECB GUNTHER
IPC: G02C1/02
Filed: 1985-08-07
Granted: 1988-11-12
Abstract: A spectacle lens is attached to the hinge lug (2) by a pin (40) retained in a lens bore (44).  The bore is enlarged at each end so that spherical recesses (46,58) are formed.  One recess (46) receives the spherical head of the pin, whilst the other one (58) receives a spherical projection (50) from the lug (2).  The pin is secured in the lug by circumferential ridges.  The lug is prevented from rotating about the pin axis by projections (60) from the part (34) of the lug which abuts the lens circumference. High rigidity and frame strength are provided for any lens curvature and thickness.
Patent KR-930006190-B1 (KR)
Inventor: MEURS JAN H H
IPC: C07C255/59
Filed: 1986-01-23
Granted: 1993-07-08
Abstract: 내용 없음.
Patent KR-920003212-B1 (KR)
Inventor: MASSUMODO HILOSHI
IPC: B24B31/02
Filed: 1986-04-14
Granted: 1992-04-24
Abstract: 내용 없음.
Patent KR-890001997-B1 (KR)
Title: Process for the preparation of halogenation benzoic acid derivatives
Inventor: KIM GYU-WAN
IPC: C07C63/04
Filed: 1986-07-23
Granted: 1989-06-07
Abstract: 2,4-Dihalo-5-fluorobenzoic acid derivatives of formula (I) [X=halogen atom; Y=hydroxy or C1-5 alkoxy , useful as intermediate in synthesizing various quinolone compounds were prepared with 2,4- dichloro-5-methylaniline as starting material.
Patent KR-890002058-B1 (KR)
Title: Electrode for electrolysis
Inventor: SHINEMUNE DAGAUKI
IPC: C25B11/03
Filed: 1986-07-29
Granted: 1989-06-15
Abstract: Electrode for use in electrolytic method using a membrance is in the form of a plate with several horizontal, rectangular openings.  Each opening has a bridge part which is formed by deep drawing or bending such that the parts protrude from the sides opposite to the membrane.  Electric connections are arranged around the edge of the plate.
Patent KR-900002687-B1 (KR)
Title: Method of growing quaternary or pertanary alloy semiconduct or by mbe lattice-matched to substrate
Inventor: FUJII DOSHIO
IPC: C30B23/02
Filed: 1986-11-18
Granted: 1990-04-23
Abstract: In growing a gp III-V quat. alloy semiconductor InGaAlAs having a lattice constant the same as that of a binary semiconductor substrate InP, by a molecular beam epitaxy (MBE) process, (I) four effusion cells to In, Ga, Al and As are provided.  (II) each molecular beam intensity of the In and As effusion cells, and one of the Ga and Al effusion cells of first gp. are adjusted by changing a temp. of each effusion cell.  (III) only the first gp. of effusion cells is operated by opening one of the Ga and Al effusion cells, and closing the other one of the Ga and Al effusion cells, and opening the other two In and As effusion cells for a first growth period.
Patent KR-900000969-B1 (KR)
Title: Process for the preparation of 2-(7'-theophylline methyl)-1,3-dioxolan
Inventor: SUH JUNG-JIN
IPC: C07D473/08
Filed: 1986-12-26
Granted: 1990-02-23
Abstract: A 2-(7'-theophylline methyl)-1,3-dioxolan of formula (I) is prepd. by the reaction of a theophylline of formula (II) and a 2-halomethyl- 1,3-dioxolan of formula (III) in the presence of a base and a phase transfer catalyst.  In the formulas, X is a halogen.  (I) is useful as a medicament for treating bronchial asthma.
Patent KR-900003875-B1 (KR)
Title: Eprom device and manufacturing method thereof
Inventor: SGATANI SINGI
IPC: H01L27/115
Filed: 1987-01-08
Granted: 1990-06-02
Abstract: The EPROM device has a number of memory cell FETs arranged in a matrix on a semiconductor substrate. The memory cell FET has a floating gate for storing voltage on it and controlling the conductivity of the memory cell FET, and a gate insulation film provided between the floating gate and the substrate for insulating the floating gate from the substrate. A control gate positioned over the floating gate controls the voltage of the floating gate. Device separation regions provided on both sides in gate width direction of the floating gate separate the memory cell FET from adjacent memory cell FETs on both sides.
Patent KR-940002617-B1 (KR)
Inventor: GIESFELDT J E TODD
IPC: B03C7/04
Filed: 1987-04-13
Granted: 1994-03-26
Abstract: 내용 없음.
Patent KR-910002843-B1 (KR)
Inventor: YAMASHITA KAZUO
IPC: F28D20/00
Filed: 1987-06-17
Granted: 1991-05-06
Abstract: 내용 없음.
Patent KR-940005786-B1 (KR)
Inventor: DIXON JERRY D
IPC: G06F12/08
Filed: 1988-02-29
Granted: 1994-06-23
Abstract: 내용 없음.
Patent KR-910003235-B1 (KR)
Title: Frequency mixer for converter in satellite communications receiver system
Inventor: KANG WON-CHOL
IPC: H04B1/18
Filed: 1988-05-18
Granted: 1991-05-24
Abstract: The mixer adapted to the frequency  converter  for  satellite receiver uses a metal semiconductor FET(MESFET)  to  have  a  good isolation and gain characteristics. The  mixer  comprises  a  gate MESFET (Q) providing an intermediate frequency (IF)  after  mixing the RF  and  local  oscillation  signals,  an  impedance  matching circuits (A,B,C) matching  the  impedance  against  to  the  local oscillation (LO), the radio frequency (RF), and  the  intermediate frequency (IF)  signals.  The  MESFET  has  the  non-linear  diode characterics between the gate and the source.
Patent KR-950008954-B1 (KR)
Title: Comparator with hysterisys
Inventor: KIM YONG-MIN
IPC: H03K5/02
Filed: 1988-05-31
Granted: 1995-08-09
Abstract: The circuit consists of transistors (Q1,Q2) which differentially amplify an input voltage and a reference voltage, transistor (Q3,Q4) which are connected with the transistors (Q1,Q2) for the function of current mirror, resistor (R1,R2) which are connected to the emitters of the transistors (Q3,Q4),  a transistor (Q5) which outputs differential amplified signals, and a current source (I1) which is connected to the both emitter of  transistors (Q6,Q7) whose colletors are connceted with the resistors (R1,R2).
Patent KR-930003825-B1 (KR)
Inventor: I KANJI
IPC: C25F1/06
Filed: 1988-12-03
Granted: 1993-05-13
Abstract: 내용 없음.