baber/WOPTO huggingface dataset:
Patent KR-830001267-B1 (KR)
Title: 축 드러스트 베어링 장치
IPC: F16C17/06
Filed: 1979-05-12
Granted: 1983-06-30
Abstract: 내용 없음.
Patent KR-830001257-B1 (KR)
Title: Process for preparation of phenyl cyclopropane carboxylic acid derivatives
Inventor: OZAWA KIYOMI
IPC: C07D213/64
Filed: 1979-11-29
Granted: 1983-06-30
Abstract: The cyclopropane carboxylates I (X = H, halogen, alkyl, alkoxy, cyclopropyl, CF3, cyano, alkylthio, trialkylsilyl) were prepd. and tested for insecticidal and acaricidal activity (test data tabulated). Thus, 6-phenoxy-α-picolyl alcohol reacted with trans-2,2-dimethyl-3-(p-methoxyphenyl)cyclopropanecarbonyl chloride to give 6-phenoxy-α-picolyl ester of trans-2,2-dimethyl-3 (p-methoxyphenyl)cyclopropane carboxylic acid.
Patent KR-830000960-B1 (KR)
Title: 반도체 장치의 제조방법
IPC: H01L21/56
Filed: 1980-03-24
Granted: 1983-05-14
Abstract: 내용 없음.
Patent KR-830001740-B1 (KR)
Title: 함탄 미립자 집괴방법
IPC: C10L5/02
Filed: 1980-04-26
Granted: 1983-09-02
Abstract: 내용 없음.
Patent KR-830002756-B1 (KR)
Title: 음 극 선 관
IPC: H01J29/80
Filed: 1980-06-16
Granted: 1983-12-10
Abstract: 내용 없음.
Patent KR-830002707-B1 (KR)
Title: 대용량 회전기계를 조절하기 위한 제어장치
IPC: F25B49/02
Filed: 1980-09-11
Granted: 1983-12-08
Abstract: 내용 없음.
Patent KR-840001570-B1 (KR)
Title: Process for preparing tetrazole derivatives
Inventor: UCHIDA MINORU
IPC: C07D257/04
Filed: 1981-02-24
Granted: 1984-10-06
Abstract: Title compds. (I; R2 = H, lower alkyl, Ph, cycloalkyl; l=0-2; m=0-1; A=C alkylene; X=-CO-, -S(O)n-etc.; n=0-2; R3=lower alkyl, cycloalkyl, maphthyl, etc.), useful as antiulcer agent, were prepd. by the reaction of II(Z1=Y1 or -S(O)l-AY1; Y1=halogen, mercapto, amidinothio) and III(Z2=Y2-A-(X)m-, Y2; Y2=halogen, mercapto, amidinothio). Thus, 8g 4-acetaimidobutylate and 12g PCl5 were stirred in benzene for 1.5hr, and reacted with hydrogen azide benzene soln. to give 5.7g 4-(5-methyl-1,2,3,4,-tetrazol-l-yl)butylate.
Patent KR-850000112-B1 (KR)
Title: A foaming method of aliphatic olefin polymers
Inventor: TSUNEO HOKI
IPC: C08J9/04
Filed: 1981-03-10
Granted: 1985-02-23
Abstract: Aliphatic olefin polymers are foamed by the extrusion of a thermoplastic mixture prepared from compd.(I), olefin polymer, and volatile organic foaming agent under increased temp. and pressure conditions, where R1 = C10-C24 aliphatic hydrocarbon gp.; R2 = H, C1-C24 aliphatic hydrocarbon gp, or polyoxy alkylene gp. having the formula -(R4-O-)n-A; R4 = residual gp. of C1-C5 aliphatic polyols; A = H or residual gp. of C1-C24 aliphatic carboxylicacid; n = 1-20, an integer; and R3 = H or C1-C7 aliphatic hydrocarbon gp.
Patent KR-840001640-B1 (KR)
Title: Machine for producing pipe cleaners
Inventor: SIWERSTAM JAN
IPC: D07B7/00
Filed: 1981-03-14
Granted: 1984-10-12
Abstract: In a pipe cleaner prodn. appts., one or more moving fiber strands bundles(15) are trapped between two wires (2,8) and enter a groove in a pulley(30), one wire trapping the bundles in the groove as the other wire leaves the pulley, euns about guide rolls, and rejoins the other wire the wires are then twisted together at a point where the other wire and the bunles are leaving the groove, so that the twist-point is well-defined by the pulley and the guide roll nearest to it, before the bundles are cut. pref the one wire and the strands bundles are highly tensioned against the grooved pulley.
Patent KR-880000734-B1 (KR)
Title: Slow release pesticide formulation
Inventor: WYSONG ROBERT DAVID
IPC: C08G18/62
Filed: 1981-09-04
Granted: 1988-05-04
Abstract: Pesticides in homogeneous combination with a cross-linked copolymer prepd. from hydrophobic monomers selected from styrene and α-Me styrene, and carboxylic acid-contg. monomers are onephase, solid controlled-release pesticidal compns.  Thus, a jacketed stainless steel sigma blade mixer is charged with 1240g methomyl, 1525g SMA 3000A, and 186g m-phenylene diamine.  The dry mixt. is mixed and heated with steam in the jacket to a melt temp. of 82≰C and the steam discontinued.  With continued mixing, the temp. rose to 103≰C and cooling water (5≰C) is applied to the jacket.  As the temp. decreased, the elastomeric mixt. hardened and formed a dusty crumb. At 46≰C the polymer crumb is unloaded.
Patent KR-850000855-B1 (KR)
Title: The inspection device of hurt
Inventor: KOIZUMI MITSUYOSHI
IPC: G01N21/956
Filed: 1981-10-08
Granted: 1985-06-17
Abstract: The apparatus is for detecting defects on a plate by means of light from a scanning beam scattered by defects. This includes a comparator for generating a gating signal when the scattered light exceeds a threshold level during any line scan. A device is provided which is responsive to the comparator for generating a window  comprising respective pulses of predetermined width during that line scan and succeeding scans, and for terminating the window after a line scan in which a gating signal is not received during a window pulse.
Patent KR-890001417-B1 (KR)
Title: Oxygen scavenger
Inventor: FARRELL CHRISTOPHER J
IPC: A23L3/3436
Filed: 1982-01-23
Granted: 1989-05-03
Abstract: A polymer laminate comprises a polymer layer contg. an oxygen scavenger which is passive and durable, but becomes active in removing oxygen when wetted with water; covered with one or more protective polymer layers which are substantially non-porous to water at ambient temps., but permeable to water at high temps. on heating the laminate.  The outer layer allows water to diffuse in K2SO3  in the inner layer.  The prods. are esp. effective packing materials for foodstuffs.
Patent KR-880000935-B1 (KR)
Title: Control device for refrigeration cycle
Inventor: MATSUOKA FUMIO
IPC: F25B49/02
Filed: 1983-02-21
Granted: 1988-05-31
Abstract: This invention relates to a control device of high efficient refrigeration cycle.  The data which is applied to the microcomputer includes a room temperature, a preset temperature, the amounts of heat from the 1st and 2nd temperature sensors (13) (14) and the frequency of an inverter.  They are applied to the A/D converter and are transformed to digital signals.  The transformed signals are registered temporarily in RAM.  The central processing unit (CPU) processes the data in RAM by the program which is stored in ROM. According to the difference between room and preset temperatures the frequency increasing/decreasing of the inverter is controlled.
Patent KR-850001865-B1 (KR)
Title: Plastic lined pipe joint and method of joinning
Inventor: PRUETER ELTON DELMONT
IPC: F16L58/18
Filed: 1983-07-28
Granted: 1985-12-28
Abstract: The joint comprises a plastic lined metal conduit having a radially outwardly projecting flange which receives the loose ring. The split V-clamp is disposed about the loose ring for forcing the plastic liner flange against an opposed liner flange. The adhesive sealer is disposed between the loose ring and the adjacent pipe flange. The sealer may be a hot melt adhesive or an epoxy resin. The sealer material may be electrically conductive. The sealer is present in sufficient quantity to adhere the loose ring to the flange and fill any space which occurs between the ring and flange. The joint is readily formed regardless of the orientation of the pipes to be jointed.
Patent KR-850001293-B1 (KR)
Title: Method to increase the photo sensitivity of halogeno-silver emulsion
Inventor: KWON KI-JONG
IPC: G03C1/10
Filed: 1983-09-26
Granted: 1985-09-09
Abstract: The photo-sensitivity of a halogenated silver emulsion, used for X- ray film, is enhanced by simultaneous chemical aging with 2.5-25 mg vs /mole Ag of NH4SCN or Na2S2O3 and 0.1-1 mg Au/mole Ag of HAuCl4 or KAuCl4 for 40-70 min., and then reducing with 1.5-2.5 mg/mole Ag of p-toluene sulfonic acid sodium salt for 30-60 min.  The emulsion comprises 1.5 microns of average diameter octahedral particles of AgBrI.
Patent KR-860002013-B1 (KR)
Title: Trigger-type sprayer
Inventor: DADA DETSUYA
IPC: B05B11/00
Filed: 1983-11-15
Granted: 1986-11-15
Abstract: The trigger-type sprayer(10) includes a trigger(22) rockably attached to one end of a housing(16) which attaches to a liq. container(12). A cylinder(18) is supported on the housing to face an orifice(32) in a nozzle(34) formed on the trigger. A suction tube(24) is attached to the cylinder's other end. A piston(20) slidable within the cylinder has one end connected to the nozzle. Dependent upon the rocking direction of the trigger, the nozzle and suction tube are closed or opened by valves(44,54).
Patent KR-860002217-B1 (KR)
Title: Radio communication system
Inventor: SASAKI SUSUMU
IPC: H04L27/38
Filed: 1983-12-28
Granted: 1986-12-31
Abstract: The system has a transmitter, a receiver and a transmission line interconnecting them. Two carriers with a 90 deg. phase difference modulate an in-phase(I) channer and a quadrature channel data signals. The transmitter has a DC offset source which adds an offset to eitherof the two channels before modulation. In the receiver demodulation is obtain through synchronous detections for two receiving sigmals, representing the data signals, by using a leakage carrier. The leakage carrier is created due to the offset and is included in the transmitted signal.
Patent KR-910005196-B1 (KR)
Inventor: GAZUO AOKI
IPC: B29C48/92
Filed: 1984-03-14
Granted: 1991-07-23
Abstract: 내용 없음.
Patent KR-930000402-B1 (KR)
Inventor: MULLER ROLF
IPC: B65B21/06
Filed: 1984-04-17
Granted: 1993-01-18
Abstract: 내용 없음.
Patent KR-890000326-B1 (KR)
Title: Split nozzle tip for pulverized coal burner
Inventor: GRUSHA JOHN
IPC: F23C5/32
Filed: 1984-04-21
Granted: 1989-03-14
Abstract: The nozzle tip comprises open-ended inner and outer shells mounted to the fuel delivery pipe and defining a flow passageway within the inner shell through which the pulverized fuel is directed into the furnace and an annular flow passageway between the inner and outer shells through which additional  air is directed into the furnace.  A pair of diverging splitter plates are disposed within the inner shell to divide the flow passageway to two separate, diverging subpassages so that the pulverized fuel stream discharging from the fuel delivery pipe is split into first and second streams which pass from the nozzle tip into the furnace in a diverging manner thereby establishing an ignition stabilizing pocket in the low pressure zone created between the diverging fuel streams.
Patent KR-930006575-B1 (KR)
Inventor: ELCKMAN NANCY C
IPC: H01B3/42
Filed: 1984-07-26
Granted: 1993-07-21
Abstract: 내용 없음.
Patent KR-890002041-B1 (KR)
Title: Timing method and apparatus
Inventor: NARITA LYUHUHO
IPC: G04G9/08
Filed: 1985-06-24
Granted: 1989-06-08
Abstract: The system has its display showing the set value when the setting device is operated and the count when not operated.  A control causes the display to enter a first mode when current is flowing to the load when the setting device is not operated and causes the display to enter a second mode to show the value set when the setting device is operated whilst current is flowing to the load.  The setting device contains a counting device to store the set load operating time.  The display has a display store to store the set value or the present displayed count.  The first mode is flashing and the second is continuous.
Patent KR-890001331-B1 (KR)
Title: Juicer
Inventor: WOO WON-MYONG
IPC: A47J19/06
Filed: 1985-07-02
Granted: 1989-04-29
Abstract: This juicer consists of a juice pail, a grind pail and a cyrindrical cap with an intake hole.  The grind pail detachably mounted on the juice pail includes two pairs of conical cutters which are inclinded and in contact with each bottom.  Every two conical cutter has a pinion provided to engage with an internal gear of the cylindrical cap.  This cap has a handle and an intake hole with a wing and a cutter.
Patent KR-900000207-B1 (KR)
Title: Semiconductor memory device with trench surrounding each memory cell
Inventor: MIURA GENZI
IPC: H01L21/225
Filed: 1985-07-12
Granted: 1990-01-23
Abstract: The semiconductor memory device for a high density includes a p-type silicon substrate (11) and an aluminium bit line (12) and an insulating gate transistor with poly-silicon operating by word line (13) and a matrix- or sphere-type capacitor (14) and a seperating region (15) and a poly-silicon cell plate (16) comprising a capacitor electrode and a p+-type separating region (17) and insulating layers (18A-18C).  The above capacitor has the first insulating layer formed on the side or bottom of the trennh formed on the substrate (11) and capacitor electrode formed on the first insulating layer.  The above transistor has the gate insulating layer and the gate electrode.
Patent KR-910003983-B1 (KR)
Inventor: TAJIMA NORIYASU
IPC: G01G19/414
Filed: 1985-08-23
Granted: 1991-06-17
Abstract: 내용 없음.
Patent KR-910000861-B1 (KR)
Inventor: OOTSKI SIGERU
IPC: B25J18/00
Filed: 1985-09-02
Granted: 1991-02-11
Abstract: 내용 없음.
Patent KR-910002462-B1 (KR)
Title: Catalysts for the polymerization of olefins
Inventor: ALBIJATI ENRICO
IPC: C08F10/00
Filed: 1985-09-27
Granted: 1991-04-23
Abstract: Supported components (component (c)) and the corresponding catalysts for polymerizing olefins, comprising the product of the reaction among :  (a) a metallorganic Al compound; (b) an electron-donor compound reactive towards MgCl2 but not capable of forming complexes with AlEt3 in standard conditions; (c) a solid including a halogenated tetravalent titanium compound and an electron-donor compound, supported on titanium trichloride or tribromide or on vanadium trichloride or tribromide having a surface area of at least 100m<2>/g, the electron-donor compound being characterized in that it is extractable with AlEt3 (under standard conditions) for at least 70% by moles.
Patent KR-940004423-B1 (KR)
Title: Negative pattern forming method on photoresist layer
Inventor: RORAND BURUNO
IPC: G03F7/26
Filed: 1985-10-26
Granted: 1994-05-25
Abstract: 1. Process for the formation of negative patterns in a photoresist layer, characterised in that it comprises the following steps : (a) coating of a substrate with a layer of photosensitive resin comprising a polymer having functional groups capable of reacting with a silicon compound, said polymer being mixed or bound by a chemical bound to a diazoquinone, said layer having the property of enabling a silicon compound to diffuse selectively into its irradiated portions when it has been exposed to a visible or ultraviolet radiation in said portions ; (b) exposure of the layer of photosensitive resin to ultraviolet or visible light through a mask to expose only selected portions of the layer ; (c) treatment of the layer of photosensitive resin with a silicon compound, so that this compound is selectively absorbed into the irradiated portions of the layer and reacts with the said functional groups of the photosensitive resin in said irradiated portions, said silicon compound being a silylating agent ; and (d) dry development by plasma etching of the thus treated layer of photosensitive resin to remove selectively the non-irradiated portions thereof in order to obtain the desired negative pattern.
Patent KR-930000535-B1 (KR)
Inventor: GAHLAU HEINEMANN
IPC: B60R13/08
Filed: 1985-11-07
Granted: 1993-01-25
Abstract: 내용 없음.
Patent KR-890000544-B1 (KR)
Title: Device for supporting brushes
Inventor: KIM I-KYONG
IPC: H02K5/14
Filed: 1985-11-30
Granted: 1989-03-20
Abstract: The structure placed around a commutator (1) comprises; a pair of locking grooves (5) placed on the upper side of a case (4) having a shaft hole (3); a pair of brush device (10) each having a brush (6), a spring (7), a brush guide (8), and a brush holder (9); a brush tap (11) linked with the brush guide (8) and inserted into the brush holder (9); and a pair of locking projections (12) linking with the locking grooves (5).
Patent KR-900003531-B1 (KR)
Title: 5-fluorobenzonitrile derivatives and pharmacologically accepatable acid addition salts there for increasing the lean meat to fat ratio,and/or enhancing the growth rate of warm blooded animals
Inventor: ASATO GORO
IPC: A23K1/16
Filed: 1986-03-20
Granted: 1990-05-21
Abstract: 5-Fluorobenzonitrile derivs. of formula (I), their optical isomers and pharmaceutically acceptable acid addn. salts are prepared. In (I) , R is isopropyl or ter-butyl. (I) are pref. 3-[2-(ter-butylanino)-1- hydroxyethyl -5-fluorobenzonitrile or 3-fluoro5-[1-hydroxy-2- (isopropylamino)ethyl  benzonitrile. (I) are useful for improving lean meat content, growth rate and feed efficiency.
Patent KR-930007304-B1 (KR)
Inventor: TRUCHINI RUIGE
IPC: C09K23/38
Filed: 1986-03-25
Granted: 1993-08-05
Abstract: 내용 없음.
Patent KR-900006778-B1 (KR)
Title: Thermal head driving device and method for fax
Inventor: CHUN BYUNG-SHICK
IPC: H04N1/00
Filed: 1986-07-16
Granted: 1990-09-21
Abstract: The circuit for heating the thermal head with constant temperature comprises a rectifier (1) providing rectified voltage (Vd) to the thermal head (6), a clock generator (2) providing pulse having shorter period than secanning period, a controller (3) providing scanning data, shift clock pulse, and a control pulse by the clock pulse, a heating time adjuster (4) determining the heating time with the control pulse, and a driving controller (5) heating the thermal head for the time determined by the adjuster.
Patent KR-920010590-B1 (KR)
Inventor: SHIMADA MASANORI
IPC: H02P25/08
Filed: 1986-08-20
Granted: 1992-12-10
Abstract: 내용 없음.
Patent KR-950003924-B1 (KR)
Inventor: ANTHONY VIVIENNE M
IPC: C07D213/643
Filed: 1987-04-13
Granted: 1995-04-20
Abstract: 내용 없음.
Patent KR-920010794-B1 (KR)
Inventor: YAI HISAO
IPC: B65B51/00
Filed: 1987-05-08
Granted: 1992-12-17
Abstract: 내용 없음.
Patent KR-890003829-B1 (KR)
Title: Process adapted to the manufacture of dram
Inventor: O KYUNG-SOK
IPC: G11C11/40
Filed: 1987-09-30
Granted: 1989-10-05
Abstract: The manufacturing method of DRAM cell using trench type transistor. The DRAM cell is fabricated by forming N+ region by AS implantation (5), trench (6), and then depositing a gate oxide (7) and poly-si used for word line  (8) and capacitor (11), electrode (15) in sequence.  The AS ion is implanted with 40 Kev, 5X105/cm2 dose, the thickness of N+ region is 0.2-0.3  m, and the depth of trench is 0.6- 0.6  m.  These method prevents the channel short.
Patent KR-960013243-B1 (KR)
Inventor: FLOREANCIG ELOI
IPC: B26D7/14
Filed: 1987-12-02
Granted: 1996-10-02
Abstract: 내용 없음.
Patent KR-910003127-B1 (KR)
Title: Coating method for pipe
Inventor: KWON YOUNG-JOON
IPC: B05D1/00
Filed: 1987-12-18
Granted: 1991-05-20
Abstract: In the precoating methed, a quide pipe is used for preventing paint from intruding itself into the  inside  of  the  pipe-shaped object which is not wanted to be precoated.  The  quide  pipe  can check the paint intrusion height within itself  by  incresing  the inner volume sum. The precoating method  comprises  a  process  of closing the open end of the pipe-shaped object (1) with a  stopper (2) nd a process of inserting the  quide  pipe  into  the  stepped portion of the hole (2A) provided in the  center  of  the  stopper (2). The advantage  of  this  method  is  raduction  of  painting inferiority.
Patent KR-910004890-B1 (KR)
Inventor: FOSTER FRANCIS J
IPC: C11D3/22
Filed: 1988-01-22
Granted: 1991-07-15
Abstract: 내용 없음.
Patent KR-930010714-B1 (KR)
Inventor: MURAKAMI SHINJIRO
IPC: C25D5/08
Filed: 1988-03-17
Granted: 1993-11-08
Abstract: 내용 없음.
Patent KR-910003889-B1 (KR)
Title: Preparation of incombustible inorganic paper
Inventor: CHONG DONG-WON
IPC: D21H13/36
Filed: 1988-03-24
Granted: 1991-06-15
Abstract: 80-95% Aluminium hydroxide of 50% conc. is mixed  into  5-20% fibrous material for paper of 4.5% conc. The fibrous  material  is composed of kraft pulp of which the water filterability is 350 CSF and glass fiber of which the diameter 5-6μm, length 6-10 mm  in  a way that the ratio of formulation is 4:1. Water resistant agent of melamine resin or glyoxal, binding agent of latex or  starch  PVA, coagulant and cohesion improver are mixed  to  be  0.5-3%  to  the concentration of fibrous mixture, and  treated  to  mixed  fibers. Non-flammable coatings which is composed  of  aluminium  hydroxide 60-80%, binder 15-25%, and sizing agent 0.5-1%  are  coated  above the front and backside with amount 5-15  g/cm2,  conc.  5-25%  and viscosity 10-20 cp.
Patent KR-910006784-B1 (KR)
Inventor: KURIHARA KAZUAKI
IPC: C23C16/513
Filed: 1988-04-02
Granted: 1991-09-02
Abstract: 내용 없음.
Patent KR-960008101-B1 (KR)
Title: Display device and method of driving such a device
Inventor: KAREL ELBERT KUIJK
IPC: G09G3/36
Filed: 1988-06-15
Granted: 1996-06-19
Abstract: In a picture display device driven with an active matrix the voltage across the pixels (12) is accurately adjusted by discharging or charging the associated capacitances, if necessary, first to beyond the transition range (17) in the transmission/voltage characteristic.
Patent KR-910009067-B1 (KR)
Inventor: YAMADA DETZURO
IPC: H03M1/18
Filed: 1988-08-02
Granted: 1991-10-28
Abstract: 내용 없음.
Patent KR-910006899-B1 (KR)
Title: Compounds based on boron nitride
Inventor: MIGNANI GERARD
IPC: C04B35/58
Filed: 1988-09-10
Granted: 1991-09-10
Abstract: New ceramic product based on boron nitride, characterised in that it comprises silicon atoms distributed predominantly in the outer layer of the said product. 
<??>This new product is highly compatible with silicious ceramics. 
<??>The invention also relates to a process for the preparation of the said product.
Patent KR-970007368-B1 (KR)
Inventor: JOLY JEAN MARCEL
IPC: B60R22/40
Filed: 1988-10-11
Granted: 1997-05-08
Abstract: 내용없음.
Patent KR-0134093-B1 (KR)
Inventor: BARIL MANA SHINGAA
IPC: H03K17/082
Filed: 1988-10-27
Granted: 1998-04-20
Abstract: 내용 없음.
Patent KR-900007628-B1 (KR)
Title: Process for the preparing imidazole derivatives
Inventor: YUN LOK-LIM
IPC: C07D405/14
Filed: 1988-12-03
Granted: 1990-10-17
Abstract: Imidazole derivs. of formula (I) and their isomers, useful as antifungal agents, prepd. by O-alkylation reaction of 1,3-dioxolane derivs. with silyloxyphenyl piperazine derivs. in the presence of an inert organic solvent and a solid base at 40-80 C for 1-5 hrs. In (I) , Ar= phenyl opt. substd. by 1 or 2 radical selected from halo or methoxy gps.; R= alkyl or aryl. Pref. the solid base is alkali metal hydroxide and the inert organic solvent is dimethylsulfoxide.
Patent KR-0135423-B1 (KR)
Inventor: MARTIN FRANCIS W
IPC: C03C10/06
Filed: 1988-12-16
Granted: 1998-04-22
Abstract: 내용없음.
Patent KR-970002261-B1 (KR)
Title: Speed control method and circuit of a rotor
Inventor: HERMALL LINK
IPC: H02P23/16
Filed: 1989-01-04
Granted: 1997-02-26
Abstract: A method and device for controlling the speed of a rotor. Tachogenerators, by means of which the speed of the rotor can be determined, are used for the electronic regulation of drives. The regulation accuracy of known methods is limited by the mechanical tolerance of the tachogenerator elements. A correction value is obtained according to the invention to compensate for the tolerances, in that the motor driving the rotor is initially accelerated to its nominal speed, time intervals between successive pulses are then determined, as well as the total time for one revolution, the number of pulses occurring during one revolution being used to determine an even time pattern, and the desired correction values then being determined from the deviations of the pulses from the time pattern. The invention can be used for motors in which the motor is required to carry out an accurate sequence of acceleration and braking processes as well as precisely maintaining a nominal speed. Applications are motors for digital or analog signal recording units.