baber/WOPTO huggingface dataset:
Patent JO-2420-B1 (JO)
Title: Alternating Propulsion Airplane
Inventor: ALI ABED ALHALEEM BADRAN
Filed: 1999-09-16
Granted: 2007-11-11
Abstract: The invention is composed of an airframe that is mounted on either a skid or wheels. Four airfoils of an approximately half - cylindrical shape extend out from the airframe, two of which are in the front and two in the back, as shown in figure 1. These airfoils move in a rotational and translational motion such that the airfoil remains parallel to it self . The airfoils synchronously move by means of a gear train driven by a motor in the middle of the airframe and the transmission of power from the gears to the airfoils is achieved by means of a crank mechanism. When every two airfoils on each side of the aircraft are considered, as shown in figure 2, one of them rotates pointing downwards and the other pointing upwards. Due to the shape of the first airfoil which is curved downwards, the drag coefficient is larger than that of the other airfoil pointing upwards by a factor of two, approximately. This difference in drag results in a net drag force which causes the aircraft to be air-born.
Patent KR-830002034-B1 (KR)
Title: 스킨 포장체의 제조 방법
Filed: 1978-01-24
Granted: 1983-10-07
Abstract: 내용 없음.
Patent KR-830002787-B1 (KR)
Title: 공업용 로보트 시스템
IPC: B23Q7/04
Filed: 1979-01-31
Granted: 1983-12-16
Abstract: 내용 없음.
Patent KR-830000527-B1 (KR)
IPC: A61K9/00
Filed: 1979-05-16
Granted: 1983-03-12
Abstract: Stabilised pharmaceutical formulations of prostacyclin or certain analogues thereof comprising an amino acid buffer, optionally containing a base, and the preparation of such formulations.
Patent KR-830001946-B1 (KR)
Title: 위사 장력장치
IPC: D03D47/34
Filed: 1979-07-13
Granted: 1983-09-26
Abstract: 내용 없음.
Patent KR-840000917-B1 (KR)
Title: Method for polymerization of -olefin
Inventor: ASANUMA TATASHI
IPC: C08F10/00
Filed: 1980-01-29
Granted: 1984-06-28
Abstract: Alpha-olefins are cubically and regularly polymerized using a catalyst consisting of titanium compounds combined with solid supports, organo-aluminum compounds, and electron-donating compounds. As solid supports for titanium compounds-active titanium compounds are used, which are prepd. by contacting titanium halides with a crushed mixts. of magnesium halide, an organo silicone compd. contg. more than one alkoxy and halogenized hydrocarbon.
Patent KR-830000893-B1 (KR)
Title: 음료자동판매기의 냉, 온수 공급회로
IPC: G07F13/00
Filed: 1980-03-28
Granted: 1983-04-26
Abstract: 내용 없음.
Patent KR-840001453-B1 (KR)
Title: Liquid fuel comfustion apparatus
Inventor: SATIO DOSHIHIKO
IPC: F23D11/00
Filed: 1980-04-01
Granted: 1984-09-27
Abstract: A liquid fuel burner has a horizontal combustion cylinder(1), including a perpheral wall(2) provided with perforations(1); a blower(12) that is disposed within the combustion cylinder and supplies air into the perforations; and a diffuser(15) that is rotatably mounted on the drive shaft(13) of the blower. An evaporator region(6) is prepared around the diffuser.
Patent KR-840001826-B1 (KR)
Title: Process for preparing 1- oxadethia cephalosporin derivatives
Inventor: INOUYE SHIGEHARU
IPC: C07D498/04
Filed: 1980-10-28
Granted: 1984-10-22
Abstract: 1-oxadethia cephalosporin derivatives I (R = 1-methyl-1Htetrazol-5- ilthio, 2-carboxymethylhydroxy-1H-tetr-azol-5-il thio, 4-methyl-5- oxo-6-hydroxy-4,5-dihydro-1,2,4-triazine-3-ilthio, pyridium, 4- carbamoyl-pyridium, 1-dimethylaminoethyl-1-H-tetrazol-ilthio, (un) substituted-tetrazole-(1,5-b)-pyridazine-6-ilthio; Y = H, methoxy; R1 = H, protected carboxy; Z = halo; X = 1-3) were prepd.  Thus, II was treated with III to give I. I has bactericidal activity both in vivo and in vitro. Also, it is connected with the chemotherapeutic use of the bactericidal composition containing I derivatives.
Patent KR-880002214-B1 (KR)
Title: Recording and/or reproducing apparatus
Inventor: ERHART GEORG
IPC: G11B15/665
Filed: 1982-09-06
Granted: 1988-10-18
Abstract: This invention is a tape recorder and player which includes tape guiding equipment mounted on a support (19), a plate-type lever with its actuator, guiding equipment positioning devices; a uniting force maintaining device of the guiding equipment and the positioning device in operation position, and various fasteners moving toward the direction to the guiding equipment.  A separation-type gathering accessory (27) works between the platetype lever and the support.  A spring connected between the lever and the support is elongated towards the moving direction, and keeps the fasteners fixed when using the pause function.
Patent KR-880001978-B1 (KR)
Title: Circuit arrangement for fm receiver
Inventor: NOLD WOLFGANG
IPC: H03H11/48
Filed: 1983-03-10
Granted: 1988-10-08
Abstract: The FM receiver has a negative loop gain for the lower frequencies of the demodulated signal.  The output of the FM demodulator controls the frequency of an oscillator.  A mxier mixes the oscillator's output with the input signal and its own output is coupled to the input of the FM demodulator.  The loop has a reactive circuit containing a reactance controlled by the output of the FM demodulator and itself controlling the oscillator so that a reduced frequency sweep is obtained and so that the amplitude of the output signal and the transmission bandwidth are independent of the oscillator's frequency.  The reactive circuit contains one or more low-pass filters with different cut-off frequency.
Patent KR-910007063-B1 (KR)
Title: Method and devices for printing webs
Inventor: GEMEYER UDO T
IPC: B41F13/02
Filed: 1983-04-16
Granted: 1991-09-16
Abstract: A color printing arrangement has a series of printing stations in each of which a different color is imprinted upon predetermined regions of a travelling band to form color images. A device for measuring the width of the band by sensing the edges thereof is located immediately upstream of each printing station. The width of the band at the first printing station is compared with the width at each of the following printing stations. As long as the widths at the latter printing stations are the same as that at the first printing station, the band is allowed to continue travelling unchanged. However, when the width of the band at a printing station downstream of the first printing station differs from the width at the first printing station, the band is operated upon to return the width to its original value. The reason is that a departure from the original width of the band causes the predetermined regions which are to be imprinted to be moved out of alignment with the printing devices in the printing stations. By returning the width to its original value, the alignment of the predetermined regions is restored.
Patent KR-900001077-B1 (KR)
Inventor: YAMAMOTO ISAMU
IPC: C07C309/14
Filed: 1983-09-08
Granted: 1990-02-26
Abstract: 내용 없음.
Patent KR-920010506-B1 (KR)
Inventor: BOLGER THOMAS V
IPC: H04N5/21
Filed: 1984-06-22
Granted: 1992-11-30
Abstract: 내용 없음.
Patent KR-880000137-B1 (KR)
Title: Gas burner
Inventor: UMEMODO MAMORU
IPC: F24C3/10
Filed: 1984-10-17
Granted: 1988-03-12
Abstract: In the combustor equipped with flame-transfer burner in front of the arrangement of the burning faces of the main burner, a number of flame ports (6b) are provided adjacent to the border of the burning face (5), and one of the ports (6b) is arranged to have an ignitor (12).
Patent KR-910001702-B1 (KR)
Title: Method and composition relating to the activation of fluorescent whitening agents
Inventor: LOUMAN HENDRIK W
IPC: D06L3/12
Filed: 1984-11-14
Granted: 1991-03-19
Abstract: @ A fluorescent whitening agent is activated using a polymer comprising hydroxyalky (meth)acrylate, such as poly(2-hydroxyethyl acrylate).
Patent KR-860001754-B1 (KR)
Title: Method for producing brick
Inventor: KIM IL-RYON
IPC: C04B18/04
Filed: 1984-12-28
Granted: 1986-10-21
Abstract: A method for producing the brick made of coal ash comprises (1) mixing a sludge from a steam power plant with portland cement, diatomite, and magnesia cement, the sludge being composed of photo ash or fly ash, (2) moulding the said mixtures under a pressure of 1.0 Kg/cm2, and (3) hardening the moulded by steam at 60≰C.
Patent KR-930003575-B1 (KR)
Inventor: FLING RUSSELL T
IPC: H04N7/01
Filed: 1985-04-11
Granted: 1993-05-06
Abstract: 내용 없음.
Patent KR-890004502-B1 (KR)
Title: Induction heating cooker
Inventor: HIRATA HIDETOSHI
IPC: H05B6/06
Filed: 1985-07-02
Granted: 1989-11-06
Abstract: The cooking appts. has a position setting circuit including a variable resistor for establishing a variable desired value based on a setting position and producing a variable output signal corresponding to the desired value when the setting position is within a predetermined range, and producing an output signal representing no desired value when the setting position is outside the predetermined range.  A timer counts until achieving a value indicated by the output signal of the setting position.  A circuit detects whether the timer is operative based on the output of the position setting circuit.
Patent KR-950000432-B1 (KR)
Inventor: HUGIN YOHAN H
IPC: G01R19/22
Filed: 1985-10-05
Granted: 1995-01-19
Abstract: 내용 없음.
Patent KR-920005718-B1 (KR)
Inventor: WILDEMEERSCH DIRK A A
IPC: A61F6/14
Filed: 1986-01-20
Granted: 1992-07-16
Abstract: 내용 없음.
Patent KR-890000975-B1 (KR)
Title: Signal modulating circuit
Inventor: LEE SUNG-WOO
IPC: H04L25/40
Filed: 1986-02-17
Granted: 1989-04-15
Abstract: Ths circuit uses a short-distance RS-232C line method but possesses also a mid-distance data transmission function. Especially,  this circuit changes a RS-422C transmission method to a differential transmission method such as a RS-422 transmission method.  This provides a signal converting circuit which transmits a data effectively without a local power.  This circuit is composed of a data terminal which inputs and outputs a control signal and a data signal, a detecting circuit, a comparator, and a amplifier.
Patent KR-930010336-B1 (KR)
Inventor: LUX RONALD E
IPC: B05C1/02
Filed: 1986-12-09
Granted: 1993-10-16
Abstract: 내용 없음.
Patent KR-900002471-B1 (KR)
Title: Solid figure drafting method
Inventor: SEKI NOBUHIRO
IPC: G06F17/00
Filed: 1987-02-26
Granted: 1990-04-16
Abstract: The computer based drawing or displaying appts. drives a cubic view of an object in response to input data relating to the object.  The appts. includes memory containing stored pattern data representative of a multiplicity of projections in the standard planes of the cubic view of a predetermined pattern of standard size.  The memory is arranged to select the pattern projections in response to input data and to magnify or reduce and translate the selected pattern projections in response to further input data so as to build up the cubic view in terms of pattern projections.
Patent KR-910001585-B1 (KR)
Title: Steel for mold for injection plastic and the method for heat treatment
Inventor: CHON EU-JIN
IPC: B29C45/00
Filed: 1987-03-06
Granted: 1991-03-16
Abstract: steel for plastic injection mould consists of 0.05-0.3  wt.% C, 0.1- 1.0 wt.% Si, 0.2-2.5 wt.% Mn, 1.5-7.0 wt.% Ni, 0.1-3.0 wt.% Cr, 0.1- 2.0 wt.% Mo, 0.5-5.0 wt.%  Al  and  balance  Fe  with  the standard impurities including up to 0.02 wt.% S, up to  0.02  wt.% P, up to 0.01 wt.% N, up to 0.01 wt.% O and up to 0.05 wt.%  H.  A method for heat treating  the  steel  comprises  air  cooling  the forged steel treated to solution at 850-950  deg.C,  quenching  at 500-600 deg.C, and aging at 500-700 deg.C  after  second  solution heat treatment.
Patent KR-950012515-B1 (KR)
Inventor: AKAO YASUSHI
IPC: G06F15/78
Filed: 1987-03-24
Granted: 1995-10-18
Abstract: 내용 없음.
Patent KR-910001443-B1 (KR)
Inventor: UNO KATSUHIKO
IPC: F24C5/06
Filed: 1987-03-25
Granted: 1991-03-07
Abstract: 내용 없음.
Patent KR-910001283-B1 (KR)
Inventor: WARAWA EDWARD J
IPC: C07D219/10
Filed: 1987-05-06
Granted: 1991-02-28
Abstract: 내용 없음.
Patent KR-950008917-B1 (KR)
Inventor: BRIESE MICHAEL W
IPC: A01M1/02
Filed: 1987-06-17
Granted: 1995-08-09
Abstract: 내용 없음.
Patent KR-940007893-B1 (KR)
Inventor: DEIT GERARD LE
IPC: F16D55/224
Filed: 1987-07-13
Granted: 1994-08-27
Abstract: 내용 없음.
Patent KR-950005893-B1 (KR)
Inventor: WEEBBER ARTHUR H
IPC: G01M3/28
Filed: 1987-08-21
Granted: 1995-06-02
Abstract: 내용 없음.
Patent KR-900004546-B1 (KR)
Title: Control of polynucelar aromatic by-products in a hydrocracking process
Inventor: GRUIA ADRIAN J
IPC: C10G35/02
Filed: 1987-10-05
Granted: 1990-06-29
Abstract: A catalytic hydrocracking process comprises (a) introducing a reduced crude to fractionating zone to produce a vacuum gas oil stream (3) having a propensity to form polynuclear aromatic cpds. (I) in a hydrocracking zone, and a slop wax stream; (b) contacting (3) with hydrogen and metal-promoted hydrocracking catalyst in the hydrocracking zone; (c) condensing the effluent from the hydrocracking, adn sepg. it into a low boiling hydrocarbon prod. stream and an unconverted hydrocarbon stream boiling above 650 deg.F and contg. (I); (d) introducing at least a portion of stream to a zone, and recovering a substantial portion of (I) in slop wax stream. Pref. the catalyst is synthetic faujasite or Ni and W.
Patent KR-900005218-B1 (KR)
Title: A method and apparatus for testing the pepeatability of the output of a rheologic instrument
Inventor: NOVEMBER DANIEL
IPC: G01N11/14
Filed: 1987-10-10
Granted: 1990-07-21
Abstract: A circumferential mixing element for the power shaft is provided in the test chamber. A spirally oriented transducer (14) reiteratively compares the integrated axial and radial reactive torques which have been imparted to the mixing element by using theologic reference material samples. The reactive torques are then compared. Differences in the comparitive reactive torques measured by the torque transducer indicate any lack of repeatability in the sequential outputs of the measuring system.
Patent KR-900003332-B1 (KR)
Title: The method of polyamide fiber
Inventor: KIM SI-EUN
IPC: D01F6/60
Filed: 1987-12-22
Granted: 1990-05-14
Abstract: A dyeable polyamide fiber is prepd. by adding 0.01-3.0 wt.% diamino alcohol of formula, H2N-(CH2)n-NH-R-OH (where n-1-10, R= alkylene of less than C5), w.r.t. produced polyamide during the polymerization; and spinning and stretching the obtd polyamide as a chip. Pref. the diamino alcohol cpd. is 2-(2-amino ethyl amino) ethanol or 2-(2-amino ethyl amino) isopropanol. The obtd. poly amide has good UV- durability, anti-pollution properties to absorption of Fe in water- treatment, washing-durability and frictiondurability
Patent KR-900007441-B1 (KR)
Title: Additive for preventing slag forming
Inventor: LEE SANG-HO
IPC: C21C1/00
Filed: 1987-12-28
Granted: 1990-10-10
Abstract: An additive for preventing the slag being formed in the desiliconising process of molten pig iron consists of (in wt.) 40-60% sludge of blast furnace including over 30% carbon, 10-20% sludge of converter including over 60% T.Fe, 5-10% coke powder, 10-20% Al dross, and 10% coal tar.
Patent KR-950012272-B1 (KR)
Inventor: BRUCE PETER
IPC: B63B21/32
Filed: 1986-09-03
Granted: 1995-10-16
Abstract: 내용 없음.
Patent KR-960014489-B1 (KR)
Inventor: YAMAMURA GAMIO
IPC: G09G5/38
Filed: 1988-08-30
Granted: 1996-10-16
Abstract: 내용없음.
Patent KR-970006031-B1 (KR)
Inventor: MOTOI NOBUHIRO
IPC: G07G5/00
Filed: 1988-10-11
Granted: 1997-04-23
Abstract: 내용없음.
Patent KR-920005891-B1 (KR)
Inventor: YOSHIDA TETCHUSHI
IPC: C09K19/02
Filed: 1988-10-19
Granted: 1992-07-24
Abstract: 내용 없음.
Patent KR-970002764-B1 (KR)
Inventor: SMITH BOBBY JOE
IPC: H04N5/00
Filed: 1988-12-08
Granted: 1997-03-10
Abstract: 내용없음.
Patent KR-910002823-B1 (KR)
Title: Substituted pyrrole pyrazole and triazole angiotenzin ii antagonists
Inventor: CARINI DAVID J
IPC: A61K31/40
Filed: 1989-01-07
Granted: 1991-05-06
Abstract: Substituted pyrroles, pyrazoles and triazoles of the formula <CHEM> and their pharmaceutically suitable salts are useful as antihypertensive agents and for treatment of congestive heart failure.
Patent KR-970007270-B1 (KR)
Inventor: TALGAM YOAV
IPC: G06F12/08
Filed: 1989-04-12
Granted: 1997-05-07
Abstract: 내용없음
Patent KR-970000478-B1 (KR)
Inventor: KAGOHATA TSUNEO
IPC: F24F11/02
Filed: 1989-05-19
Granted: 1997-01-13
Abstract: 내용 없음.
Patent KR-0134627-B1 (KR)
Title: Photodiode and method of manufacturing same
Inventor: PARK BYUNG-WOO
IPC: H01L27/14
Filed: 1989-05-31
Granted: 1998-04-20
Abstract: A photodiode used as an image sensor and method thereof are disclosed. The photodiode comprises: a glass substrate(G); a chrome layer, an ITO(indium tin oxide) layer; an intrinsic a-Si:H, and a p-type a-Si:H layer sequentially formed on the glass substrate(G); and a Si3N4 layer formed on the ITO layer in order to prevent an indium diffusion into the intrinsic a-Si:H layer, wherein the intrinsic a-Si:H layer, the p-type a-Si:H layer and an aluminum electrode are sequentially formed on the Si3N4 layer.
Patent KR-930001483-B1 (KR)
Inventor: YAMAMOTO KAORU
IPC: C08G2/10
Filed: 1989-06-13
Granted: 1993-03-02
Abstract: 내용 없음.
Patent KR-0144678-B1 (KR)
Title: Deflection circuit
Inventor: MANFRED SPRUCK
IPC: H04N3/233
Filed: 1989-09-12
Granted: 1998-07-15
Abstract: Deflection circuit for television tube. In a deflection circuit for a television tube, which comprises a horizontal generator (16) and a vertical generator (2) for controlling a horizontal (17) and vertical deflection coil (1), respectively, the horizontal generator (16) is intended to generate a symmetric output current. According to the invention, the vertical deflection coil (1) is supplied both with the output current (iv) of the vertical generator (2) and with a correction current (ik) obtained from the output current (ih) of the horizontal generator (16). In this arrangement, the correction current (ik) is at times directed oppositely to the output current (iv). A symmetric deflection requires a lower electrical power than a sawtooth deflection and is appropriate, particularly in the case of large, high-intensity picture tubes. The circuit according to the invention achieves a uniform line spacing with symmetric deflection. 
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Patent KR-960009570-B1 (KR)
Title: Imidazoline derivative and preparation thereof
Inventor: MATSUMOTO KAZUO
IPC: C07D233/64
Filed: 1989-09-27
Granted: 1996-07-20
Abstract: Imidazoline derivative of the formula: <CHEM> wherein R is a halogenophenyl group or a pyridyl group and X<1> and X<2> are a hydrogen atom or a lower alkoxy group, or a pharmaceutically acceptable salt thereof, which is useful as an immunomodulator and as an agent for the treatment and/or prophylaxis of rheumathoid arthritis, multiple sclerosis, systemic lupus erythemathodes, rheumatic fever and the like, a process for the preparation thereof, and a pharmaceutical composition containing said compound as an active ingredient.
Patent KR-920009740-B1 (KR)
Title: Making method of soil cement pile in situ
Inventor: NAKANISHI WATARU
IPC: E02D3/12
Filed: 1989-11-07
Granted: 1992-10-22
Abstract: The method employs an  injection  pipe  (1)  supported  by  a rotary up-and-down drive mechanism  (2)  and  having  at  its  tip nozzles (3) each comprising a central nozzle (32) and  an  annular nozzle (33) about the nozzle (32), with an excavating  blade  (31) attached to the front end. The central nozzle and  annular  nozzle respectively have separate feed lines  passing  through  a  swivel (4). A solidifying agent is injected into the  ground  to  form  a solidifying layer  (X)  into  which  the  injection  pipe  (1)  is positioned in center for the central nozzle to  inject  water  end for the annular nozzel to blast compressed air, while the pipe (1) withdrawing in rotation to draw up earth in water from the central part of the layer (X) to hollow it.
Patent KR-920010750-B1 (KR)
Title: Automatic alien substances removing system
Inventor: KIM KANG-SAN
IPC: H01L21/48
Filed: 1989-11-30
Granted: 1992-12-14
Abstract: The foreign substance removing device  comprises  side  frame (31,31'), upper and lower frame (11,11'), a drive unit (12) on the upper frame, a rotation shaft (14)  linked  with  the  drive  unit through a belt (13), a lifter (16) provided at the rotation  shaft to move the lifter up and down, an elevator unit (1)  moving  each boat (100) in a magazine (18) of the  lifter  to  outside  by  the operation of an air cylinder (19) provided at the  side  frame,  a supporting base (33), which  has  a  drive  (26)  and  duct  (40), connected with the elevator moving part. Frames (20,20') are fixed on the inserting member (30,30') of the  supporting  base,  and  a number of rolls (21,21',22,22',23,23',24,24',25,25') are  inserted into bearings (28,28') on the frames.
Patent KR-0159760-B1 (KR)
Inventor: MCSHANE LAWRENCE JOSEPH
IPC: C07D277/42
Filed: 1989-12-20
Granted: 1998-12-01
Abstract: 내용 없음.
Patent KR-960009216-B1 (KR)
Inventor: BURTON LAWRENCE C
IPC: F03B13/18
Filed: 1989-01-26
Granted: 1996-07-16
Abstract: 내용없음
Patent KR-970009718-B1 (KR)
Inventor: ALTER KONRAD GEORGE
IPC: A61M5/315
Filed: 1989-03-22
Granted: 1997-06-17
Abstract: 내용없음.
Patent KR-930004966-B1 (KR)
Inventor: NAKATA MIKIO
IPC: F02M35/14
Filed: 1990-01-23
Granted: 1993-06-11
Abstract: 내용 없음.
Patent KR-960000485-B1 (KR)
Inventor: SHIRAGA JUN
IPC: F02M37/10
Filed: 1990-02-20
Granted: 1996-01-08
Abstract: 내용 없음.
Patent KR-950001499-B1 (KR)
Inventor: DYKSTRA GERALD P
IPC: H01J37/317
Filed: 1990-02-26
Granted: 1995-02-25
Abstract: 내용없음.
Patent KR-0150207-B1 (KR)
Title: Initiators for materials which can be polymerized cationically
Inventor: BEAT MULLER
IPC: C07F15/02
Filed: 1990-03-21
Granted: 1998-10-15
Abstract: Initiator compositions for materials which can be polymerized cationically are described, these containing i) an anhydride of a polycarboxylic acid, a polyisocyanate, a cyclic carbonate, a lactone or a mixture of such compounds, and dissolved therein ii) at least one compound of the formula I [M+n(L)x]n+ n X-(I) in which n is 2 or 3, M is a metal cation selected from the group consisting of Zn2+, Mg2+, Fe2+, Co2+, Ni2+, Cr2+, Ru2+, Mn2+, Sn2+, VO2+, Fe3+, Al3+ and Co3+, X- is an anion which is selected from the group consisting of AsF6-, SbF6-, BiF6- and derivatives derived from these anions in which a fluorine atom is replaced by hydroxyl groups, or in which up to 50% of the anions X-, based on the total amount of anions, can also be any desired anions, L is water or an organic  sigma -donor ligand which contains, as ligand sites, one or more functional radicals selected from the group consisting of -CO-, -CO-O-, -O-CO-O-and -O-, and which forms  sigma -bonds with the central atom via the oxygen atom or via the oxygen atoms, and x is an integer from 0 to 6, it being possible for the ligands L to differ within the context of the definitions given.
Patent KR-0152528-B1 (KR)
Inventor: KINOSHITA SHINITSU
IPC: G11B7/26
Filed: 1990-03-30
Granted: 1998-10-15
Abstract: 내용없음.
Patent KR-930001437-B1 (KR)
Title: Sinusoidal wave generating system
Inventor: JANG CHOL-HWA
IPC: H03K3/00
Filed: 1990-04-26
Granted: 1993-02-27
Abstract: The system for cost reduction and for decreasing  the  stress caused by direct current level comprises: a counter (11) executing the up/ down count operation according to the rotation direction of motor; a ROM (12) outputting the three-phase sine wave data; a D/A convertor (13) converting the outputted data of the ROM  into  the analog signal; a means (14) sampling/holding the signal  outputted from the D/A  convertor  into  the  invertor  control  signal  of A,B,C- phases; a generator (15) outputting the clock signal  having three times frequency; a counter (16) providing the  clock  signal to the addresses (A8,A9) of ROM (12); a generator (17)  outputting the ratch signals (RA-RC) to the sampling/holding means (14).
Patent KR-0154333-B1 (KR)
Inventor: LILES DONALD T
IPC: C08K5/5419
Filed: 1990-05-21
Granted: 1998-12-01
Abstract: 내용 없음.