baber/WOPTO huggingface dataset:
Patent KR-860001428-B1 (KR)
Title: Open showcase
Inventor: SAKAI KATSUHIRO
IPC: A47F3/04
Filed: 1981-09-30
Granted: 1986-09-24
Abstract: A cooler(6) is established in the cooling air circulation duct(5). The air is cooled by heat exchange with the cooler and ejected to the front exit(8) to form an air curtain. This air curtain cooled the showcase. The cooler has plate pins(61) and refrigerant pipes(62). The moisture of air flown to the duct from the cabinet door rom a frost on the pins and pipes of the cooler. This frost closes the clearance of the pins and this prevents the flow of cooling air and a drop in the efficiency of the cooler. So, in this cooler, the ratio of the surface of refligerant pipe and outside plate is enlarged to 8-15. This drops the frost forming rate and makes the frost removal time short.
Patent KR-880002111-B1 (KR)
Title: Semi-submersible vessel
Inventor: LIDEN HADAR
IPC: B63B35/44
Filed: 1981-10-23
Granted: 1988-10-15
Abstract: A semi-submersible vessel has two parallel underwater hulls and an operating deck formed as a self-supporting displacement body with sufficient vol. to keep the vessel afloat.  Two pairs of columns connect deck and hulls are equally spaced from each other and from a vertical line of symmetry.  The deck is a multi-deck high box structure rigidly interconnecting the column tops and extending below the tops.  The deck is substantially above water level while the hulls are suffliciently below water level not to be markedly affected by wave movement.  A horizontal stay interconnects each set of columns in each pair and is transverse to the hulls and just above them but still underwater.
Patent KR-890004541-B1 (KR)
Title: Fastener
Inventor: SMITH WALTER J
IPC: F16B19/05
Filed: 1982-01-26
Granted: 1989-11-13
Abstract: A pin (32) and a tubular collar (342) are set by a tool (350) having a set of pulling jaws (418) to grip the pin (312) and a swaging anvil (360) for swaging the collar (342) onto the pin. The pin has a set of annular combination grooves (318) which can function as locking grooves.  A selected one can function as a breakneck groove and a set of pull grooves (402) of a different construction can function only as pull grooves.  As the fastener is set, the pin will break off in a preselected one of the combination grooves within the outer end of the tubular member (42). The combination grooves and the pull grooves have the same pitch so that the teeth of the pulling jaws can engage the combinationg grooves and the pull grooves separately or simultaneously, according to the thickness of the workpiece.
Patent KR-890001822-B1 (KR)
Title: Apparatus for separating of mixed waste
Inventor: KARL ROESE
IPC: B07B1/00
Filed: 1983-08-11
Granted: 1989-05-25
Abstract: The preliminary sieve (1) for separating waste materials, esp. from the demolition of buildings, includes an open flywheel (4) with sieve-like perforated vanes rotating about an inclined or horizontal axis (2) which lies in the intersecting line of the vanes.  A receptacle is mounted beneath the flywheel.  When the bulk material is fed into the sieve chamber which is open at the top, the smaller items for the most part fall through the sieve holes.  The larger items can automatically leave the sieve chamber on further rotation of the flywheel, pref. passing onto a conveyor belt.
Patent KR-900003302-B1 (KR)
Title: Process for preparing hydroxyalkyl-azolyl derivatives
Inventor: KRAMER WOLFGANG
IPC: A01N43/653
Filed: 1983-11-15
Granted: 1990-05-14
Abstract: Hydroxyalkyl-azolyl dervis. substd. by heterocyclic substituents of formula (I) are prepd. by reacting an oxylane of formula (II) with an azole of formula M-Az in the presence of a dilute or a base. In the formulas, Az is 1,2,4,-triazol-1-yl, 1,2,4-triazol4-yl or imidazol-1- yl; Het is 1,3=dioxanyl; R is phenyl, phenylalkyl, phenoxyalkyl, phenylthioalkyl or phenylalkenyl; R' is H or alkyl; n is o or 1; M is H or alkali metal salt.  The derivs. are useful as fungicides for plant protection.
Patent KR-850001525-B1 (KR)
Title: Device for bending sheet-metal sections
Inventor: NASLUND GUSTAV
IPC: B21D37/00
Filed: 1984-06-29
Granted: 1985-10-16
Abstract: A device for bending sheet-metal sections has a vertical bending bar with a width as wide as that of the bottom wall of a groove and has a compression die similar to the cross-section of the above. There is a die in which a groove with no more wider than the least width of the bottom section can accomodate the above die and a driving apparatus for inter-transfer between the bending bar and the compression die. A trace is formed in the bottom by the compression die due to the interaction between the bending bar and the compression die. As the bending bar approaches the compression die, a projecting part and a convex projecting part are formed.
Patent KR-900000093-B1 (KR)
Title: Multiprocessing stored program controlled telecommunication establishment
Inventor: EUNSON BYURN E R
IPC: H04Q3/54
Filed: 1984-09-19
Granted: 1990-01-19
Abstract: In a stored program controlled by telecommunication establishment, function blocks of the establishment are controlled in cooperation with a computer system including a number of processors.  Determining the order in which the establishment control functions are preformed is included in the cooperative functions. One of the processors is separated for exclusively controlling an independent stored program controlled signal switching system which performs the cooperative functions by switching cooperative signals between the function blocks of the establishment and at least one central processor.
Patent KR-870000835-B1 (KR)
Title: Non-broadcast channel noise eliminating circuit
Inventor: MYONG CHAN-KYU
IPC: H04N5/21
Filed: 1984-12-28
Granted: 1987-04-23
Abstract: Describes television noise rejection circuits, when the electicity is out or the station is out noise or neighbor channel sound is added. Especially for the instances, the necessity for eliminating the troubles invites the integrated circuits whose function is muting. In muting circuits horizontally synchronized signal and reference voltage are compared through comparator and this signal travels switching block and end-gate block, integrator comparating vtg generating circuit and second comparator in addition to the noise rejection circuits.
Patent KR-890004219-B1 (KR)
Title: Picture signal delay circuit
Inventor: HIROTA AKIRA
IPC: G11C27/04
Filed: 1985-02-28
Granted: 1989-10-27
Abstract: An input horizontal transfer register has an input composite video signal serially supplied to it.  An input vertical transfer gate, columns of vertical transfer resisters, an output vertical transfer gate, an output hoirzontal transfer register, a horizontal transfer clock pulse generator, a vertical transfer clock pulse generator and a vertical transfer gate pulse generator are also included.  The vertical transfer clock pulses are generated at a rate of one per horizontal scanning period of the input video signal.  Also, one or more vertical transfer clock pulses are generated during a specific time period.
Patent KR-900001170-B1 (KR)
Title: A preparation process for 4-acetoxy-3-hydroxyl ethyl-azetizin-2-one derivatives
Inventor: OHOHHASHI DAKEHISA
IPC: C07F7/18
Filed: 1985-07-05
Granted: 1990-02-27
Abstract: 4-Acetoxy-3-hydroxyethyl-azetizin-2-one derivs. of formula (II) are prepd. by reacting a beta-lactam compd. of formula (I) with an acetic anhydride in the presence of a base in organic solvent, and thus eliminating N-protecting group.  In the formulas, R1 is hydroxy- protecting group; R2, R3 and R4 are C1-4 lower alkyl, phenyl or aralkyl; R is N-protecting group.  (II) are useful as an intermediate for synthesizing a beta-lactam antibiotic.
Patent KR-900006702-B1 (KR)
Title: Copper-nickel-tin-cobalt spinodal alloy and the making process a the articles
Inventor: RIBARK RONALD J
IPC: C22C9/06
Filed: 1985-07-25
Granted: 1990-09-17
Abstract: A copper base spinodal alloy body is formed by compacting the alloy powder forming a green compact, sintering in a reducing atmosphere to form a metallurgical bond, and cooling at a rate such that age hardening and embrittlement are prevented. The alloy comprises (in wt.%): 5-30% Ni, 4-13% Sn, 3.5-7% Co; bal. Cu. The sum of Ni+CO being no more than 35%. The replacement of a portion of nickel in a copper- nickel tin spinodal alloy with an equal portion of cobalt improves ductility, formability and electrical conductivity, in the age- hardened state without substantially diminishing the strength properties.
Patent KR-890002895-B1 (KR)
Title: Desiliconization flux for blowing into molten iron
Inventor: KIM KI-CHANG
IPC: C21C1/04
Filed: 1985-08-31
Granted: 1989-08-08
Abstract: Desiliconization flux for blowing into molten iron comprises (1) CaO 10-45 wt.%, (2) halocompd. i.e. CaF2 or Na3AlF6 2-20 wt.% and (3) iron oxides i.e. FeO, Fe2O3, Fe3O4 40-80 wt.%.  The flux shows below 1.0mm in grain size.
Patent KR-890004299-B1 (KR)
Title: Method of consilidating the soft soil
Inventor: SIN YUN-SIK
IPC: E02D5/00
Filed: 1985-10-30
Granted: 1989-10-30
Abstract: When a deep ground hole (2A) has been completed and a packer (1) is piped through the hole, grout is applied through the annulus in a manner of inflating.  The second holes (2B) which is perpendicular to the first hole (2A) is drilled, and then a packer is piped through the hole.  Grout is injected through the packer to inflate the packer.  Since the grout is solidified with the inflation of packer, the weak ground is consolidated.
Patent KR-890000334-B1 (KR)
Title: Quantizer with detector of image movement
Inventor: LEE BYONG-RYOL
IPC: H03M7/00
Filed: 1985-12-31
Granted: 1989-03-14
Abstract: The modulator adapts a 3-step modulating method in which gradient and size of each step is different.  The modulator comprises a block forming circuit (1) for dividing image digital input (A) into 8X8 pixel blocks, a subtraction circuit (2) for subtracting the existing image block from the former image block, a multiplication circuit (3) for multipling weighting factor to the output of (2) with a detected mode signal of a threshold value detector (7), a frame memory (6) for comparing the positions of the input and the former image data and providing corresponding weighting factor to (3), a quantifying circuit (4) for compressing the digital signal, and a variable length modulation circuit (9).
Patent KR-940002163-B1 (KR)
Inventor: HARWOOD LEOPOLD A
IPC: H04N9/78
Filed: 1986-04-17
Granted: 1994-03-18
Abstract: 내용 없음.
Patent KR-890005020-B1 (KR)
Title: Control device for internal combustion engine
Inventor: ARAI GENJI
IPC: F02D31/00
Filed: 1986-07-11
Granted: 1989-12-06
Abstract: The control system for an IC engine is provided with an automatic transmission system including a friction type clutch and a gear type transmission.  The system has a device to generate data describing the operating state of the vehicle.  A second device calculates reference data representing the quantity of fuel needing injecting to put the engine in a given normal speed control mode.  A third device produces second reference data describing the quantity of fuel needing injecting to put the engine into a given specific speed control mode at a wanted fixed engine speed.  A sensor generates a signal indicating the operating state of the automatic gear system and is coupled to the third device.
Patent KR-930008265-B1 (KR)
Inventor: TANAKA SHUNJI
IPC: G06F9/46
Filed: 1986-07-30
Granted: 1993-08-27
Abstract: 내용 없음.
Patent KR-900001323-B1 (KR)
Title: Inner-pipe lining apparatus
Inventor: KIM JONG-IK
IPC: B05C7/00
Filed: 1986-08-16
Granted: 1990-03-08
Abstract: Motors (M1)(M2) for revolving and rotating a rotary body are installed at the front of a lining apparatus.  A large sized ring gear (2) around a main shaft (1) is set up in the body (4) with a lining cylinder (12) and a number of pinions (3) are set up around the ring gear.  A pair of rotary plates (4)(4') are installed at one side of the ring gear and rotary supporters (6)(6') are installed at the rotary plate.  A cylinder (7) is set up at one end of the body and a pusher (9) at the back side of the rotary supporter (6) to fix it.  A heater (10) is installed at the lower of the body so that the inner wall of pipe inserted between the rotary plates and the rotary supporter is lined, sprayed and dried during revolution and rotation of it.
Patent KR-900001607-B1 (KR)
Title: Method and apparatus for granulating mineral fibers
Inventor: OH JIN-GIL
IPC: B02C18/00
Filed: 1986-12-31
Granted: 1990-03-17
Abstract: Inorganic fibers are granulated with the stages of removing non-fibrillation material (7) by upward-transfering obliquely and vibration inorganic fibers on a screw conveyor (1) by vibrator (3), decreasing density of them by two main rotary shafts (10)(11), putting them homogeneously into the opening part (16) by guiderotating feeder (14) and antibridging bar (15), dispersing them by picker, supplying a fixed by screw conveyor (21), having the same density and particle size by rotary feeders (22) (23).
Patent KR-940004077-B1 (KR)
Inventor: FORAGE ROBERT G
IPC: C12P21/02
Filed: 1986-04-14
Granted: 1994-05-11
Abstract: 내용 없음.
Patent KR-900000803-B1 (KR)
Title: Transmission for driving a trailer of tractor
Inventor: KIM SOO-SEONG
IPC: B60K17/22
Filed: 1987-06-19
Granted: 1990-02-17
Abstract: The transmission system for driving a trailor of power tiller comprises a main shaft (5) for transmitting the power of the tiller engine, driven shafts, a main transmission shaft and a steering clutch shaft.  A shaft of power tiller connected with a idler shaft (15) is driven by the steering clutch shaft (14), connected with the sixth shaft (13) and gears (21,21',21").  The gear of the steering shaft is connected with the clutch (28) of the seventh shaft (18) through the intermediary of the clutch of the idler gear (27) so that the shaft of the trailer is driven.  The bevel gear (29) of the seventh shaft is linked with the bevel gear (30) of the trailor's shaft.
Patent KR-930000931-B1 (KR)
Inventor: KONDO TOSHIYUKI
IPC: F25D11/02
Filed: 1987-06-27
Granted: 1993-02-11
Abstract: 내용 없음.
Patent KR-900008072-B1 (KR)
Title: Display device
Inventor: HARA GENICHIRO
IPC: H04N3/12
Filed: 1987-07-01
Granted: 1990-10-31
Abstract: The display appts. comprises a display unit consisting of modules and a housing accomodating the display unit. Each module includes units arranged in a matrix form, a power source and a control unit. Each unit includes light emitting elements arranged in a matrix form and a drive circuit for the light emitting elements. The light emitting elements are dot matrix type display elements such as liquid crystal elements or fluorescent display tubes. The display is controlled by controlling two kinds of electrodes crossed by one another.
Patent KR-950011746-B1 (KR)
Inventor: KAMIYA TAKASHI
IPC: A61K31/545
Filed: 1987-10-13
Granted: 1995-10-09
Abstract: 내용 없음.
Patent KR-900002275-B1 (KR)
Title: Fabric treatment to improve dyeability thereof
Inventor: TAMBOR MARTIN
IPC: D06P5/00
Filed: 1987-10-28
Granted: 1990-04-07
Abstract: A dyeability of textile substrates is improved by the treatment of the substrates with a cationic cellulose graft copolymer compsn.  The compsn. is prepd. by reacting a cellulose substrate with a cationic monomer of formula (I) or (II).  In the formulas, R1  and R2 are each H or C1-3 alkyl; R3 and R4 are each H, phenyl or C1-16 alkyl; R5 is H or C1-3 alkyl; R6 is C1-12 (hydroxy) alkylene; R7 is phenyl or C1-3 alkyl; A is -O- or -NH-; X is anion.
Patent KR-900005308-B1 (KR)
Title: Printed circuit board method
Inventor: MOON DUK-MAN
IPC: H05K3/34
Filed: 1987-12-31
Granted: 1990-07-27
Abstract: The printed circuit board is produced by the stages of silkscreening a circuit board with a conductive resin on a substrate made of thermosetting resin, thermoplastic resin or ceramic, drying and hardening at 120-300 deg. C for 4-10 minutes, immersing the substrate for 20-40 minutes in a plating solution of no electrolysis to make 10-20 microns metal layer on the circuit of the substrate, coating the substrate with a nonconductive material, and punching the components inserting part of the substarte.
Patent KR-950002435-B1 (KR)
Inventor: DAVIS WATTER L
IPC: G08B3/10
Filed: 1986-11-24
Granted: 1995-03-20
Abstract: 내용 없음.
Patent KR-930003399-B1 (KR)
Inventor: JOYCE THOMAS F
IPC: G06F9/30
Filed: 1988-05-19
Granted: 1993-04-26
Abstract: 내용 없음.
Patent KR-880001839-B1 (KR)
Title: Method of transcription of stainless steel
Inventor: LEE HU-MYONG
IPC: B44C1/16
Filed: 1988-07-11
Granted: 1988-09-21
Abstract: Transcribing method comprises (i) the formation of microprominence and depression on the surface of stainless steels, (ii) first baking treatment for attachment of an enamel material on the surface with prominence and depression at 720-820 deg.C and (iii) secondary baking treatment for strong coherence of enamel material and inorganic pigment of transcription paper at 30-100 deg.C lower temperature than first backing temperature, after putting the transcription paper, on which letters and/or patterns are printed, on the enamel material.
Patent KR-950014605-B1 (KR)
Inventor: YOSHINO AKIRA
IPC: H01L21/00
Filed: 1988-09-03
Granted: 1995-12-11
Abstract: 내용 없음.
Patent KR-900006626-B1 (KR)
Title: Dehydrator for eating and drinking vessels
Inventor: ITO JUNYA
IPC: A47L15/42
Filed: 1988-09-13
Granted: 1990-09-15
Abstract: The tableware drying machine comprises a drying tank accommodated in a drying machine housing and a container frame for receiving a tableware container. The frame is connected with a motor installed in the drying tank and rotated at high speed. The container contains tableware such as a spoon which has been washed with hot water. The container frame is rotated at high speed to dry the tableware by means of centrifugal force. A forced air stream is generated such that the container frame and container rotating at high speed function themselves as a centrifugal fan. The fan takes in air through air intake holes provided in an opening-and-closing lid of the drying tank, directs the air towards the centre of the drying tank, and discharges the air through outlet openings provided in the upper periphery of the drying tank to make the air entrain moisture in the tank.
Patent KR-0129751-B1 (KR)
Inventor: TAKAYAMA JUN
IPC: H03M7/18
Filed: 1988-10-12
Granted: 1998-10-01
Abstract: 내용없음
Patent KR-920001473-B1 (KR)
Inventor: NAKANISI WATARU
IPC: E02D3/12
Filed: 1988-12-08
Granted: 1992-02-14
Abstract: 내용 없음.
Patent KR-960015419-B1 (KR)
Inventor: HANKE WOLFGANG
IPC: F16D13/71
Filed: 1988-03-10
Granted: 1996-11-13
Abstract: 내용 없음
Patent KR-920003572-B1 (KR)
Inventor: BERTANI CARLO
IPC: A47K10/48
Filed: 1989-02-04
Granted: 1992-05-04
Abstract: 내용 없음.
Patent KR-920005603-B1 (KR)
Inventor: TAKEDA TAKAHIKO
IPC: G06F3/0487
Filed: 1989-03-14
Granted: 1992-07-09
Abstract: 내용 없음.
Patent KR-920004083-B1 (KR)
Inventor: KENJO YOSHIHARA
IPC: G07D5/08
Filed: 1989-05-25
Granted: 1992-05-23
Abstract: 내용 없음.
Patent KR-930005789-B1 (KR)
Inventor: NAKAYAMA JUNICHIRO
IPC: G11B7/26
Filed: 1989-07-08
Granted: 1993-06-24
Abstract: 내용 없음.
Patent KR-0148260-B1 (KR)
Inventor: PHADKE SHRIKANT V
IPC: C08L77/00
Filed: 1989-08-23
Granted: 1998-08-17
Abstract: 내용없음
Patent KR-910008017-B1 (KR)
Inventor: CHUNG SOO-MIN
IPC: H01J9/227
Filed: 1989-08-30
Granted: 1991-10-05
Abstract: 내용 없음.
Patent KR-930002514-B1 (KR)
Inventor: KAGEYAMA MOKUCHI
IPC: H01L21/00
Filed: 1989-11-21
Granted: 1993-04-03
Abstract: 내용 없음.
Patent KR-970009126-B1 (KR)
Inventor: KOROSCHETZ FRANZ
IPC: C23C14/16
Filed: 1988-07-22
Granted: 1997-06-05
Abstract: 내용 없음.
Patent KR-920001381-B1 (KR)
Title: Human monoclonal antibody against candida
Inventor: KAWAMURA TAKASHI
IPC: C12P21/08
Filed: 1988-10-13
Granted: 1992-02-11
Abstract: Human monoclonal antibody against Candida is obtd. by fusion of human lymphocytes with a lymphoma cell line (pref. mouse myeloma), screening and cloning the hybridoma for ani-Candida monoclonal antibody prodn. An Epstein-Barr virus transformed human lymphocyte cell line may be used instead of a hybridoma. The monoclonal antibody reacts with the cell wall polysaccharides (esp. mannans) of Candida.
Patent KR-930000665-B1 (KR)
Inventor: ISHIMARU NAOSHI
IPC: C08F4/654
Filed: 1990-03-02
Granted: 1993-01-29
Abstract: 내용 없음.
Patent KR-920009465-B1 (KR)
Inventor: KASAI MINORU
IPC: A22C15/00
Filed: 1990-04-21
Granted: 1992-10-17
Abstract: 내용 없음.
Patent KR-930009280-B1 (KR)
Title: Method of preparation for a floor covered with laminated vinyl
Inventor: JONG SU-BONG
IPC: D21H27/18
Filed: 1990-04-28
Granted: 1993-09-25
Abstract: mixing  59.45  %  of  raw materials of vinyl floor-sheet, e.g. PVC, PP, PE and foaming agent with a powdered composition composed of 35 % of ceramics, 0.5 % of clay, 1.5 % of kaolin, 2.5 % of feldspar, 0.05 % of copper powder, and 1 % of char; and  agitating.  The  floor-sheet  made  by  this composition and method has physical  illness  curing  function  as well as interior-decorating effect because the sheet has  infrared radiating ceramics inside it. Moreover, when the sheet is  applied with some substances, it shows room-air purifying and deodourizing abilities.
Patent KR-920005933-B1 (KR)
Title: Space division switch
Inventor: PARK SUNG-HYON
IPC: H04Q11/06
Filed: 1990-05-11
Granted: 1992-07-24
Abstract: The  expansion  of  exchange  capacity  not  affecting   the conventional service channels  is  done  easily  using  the  space sharing switch unit. The space sharing switch unit comprises input highway buses, output highway buses, a space sharing  switch  unit connected to the input highway buses and output highway buses, and an output selecting unit connected  to  output  highway  buses  to select output highway bus.
Patent KR-930008194-B1 (KR)
Title: Thermoplastic resin composition
Inventor: KIM KWANG-TAE
IPC: C08L67/00
Filed: 1990-06-30
Granted: 1993-08-26
Abstract: This new thermoplastic  resin  composition  has  good  impact resistance at room and low temp., and can be use  for  housing  of cars and electronics. The resin composition comprises  35-55  wt.% polycarbonate  resin  of  25000  Mw.;  35-45   wt.%   polybutylene terephthalate copoly merized  by  ethylene  propylene  grafted  by formula  (I)  and  (II);  1-20  wt.%  impact   reinforcing   agent copolymerized by  at  least  one  monomer  of  acrylic  ester  and metacrylic ester, and aromatic vinyl compd.  in  the  presence  of dien type rubber; 1-5 wt.% copolymerized  polyolefin;  0.1-2  wt.% stabilizer;  and  0.2-1  wt.%  carbon  black  with  above  500m3/g specific surface by BET method. The above copoly merization  ratio of ethylene propylene rubber  and  polybutylene  terephthalate  is 10- 20:90-80.
Patent KR-920007419-B1 (KR)
Title: Method of fluorescent screen for crt
Inventor: KIM MIN-HO
IPC: H01J9/20
Filed: 1990-07-07
Granted: 1992-08-31
Abstract: Fluorescent film for color cathode ray tube  is  produced  by (A) forming  fluorescent  film,  which  contains  dichromate   as photosensitive component, on the inside of the  panel  of  cathode ray tube and (B) light exposing and  developing  the  photocurable resin film part sucessively. The fluorescent film is characterized by adding 0.03-1.5 wt.% ethylsilicate with  respect  to  100  wt.% composition of the film.
Patent KR-930002993-B1 (KR)
Title: Voltage controlled oscillator having agc
Inventor: SO MYONG-JIN
IPC: H03B5/00
Filed: 1990-07-13
Granted: 1993-04-16
Abstract: The VCO circuit for automatically adjusting  the  close  loop gain to improve the stability of the oscillation output  comprises an oscillator (1), a differential amplifier (2) for amplifying the oscillator output, a bias adjuster (3) for adjusting the amplifier (2) bias, a buffer (4) for filtering the amplifier (2)  output  to buff the filtered output, a bias controller (5),  an  output  unit (6) for differentially amplifying the buffer (4) output to  output final osc. frequency signal, a rectifier (11) for  rectifying  the amplified and buffered unit (2)  output  through  PNP  transistors (Q103,Q104), a smoothing filter (12) for smoothing  the  rectifier (11) output through a transistor (Q106) and  a  capacitor  (C101), and a controller (13) for controlling the  transistor  (Q23)  base bias of the amplifier (2).