baber/WOPTO huggingface dataset:
Patent ES-2291115-B1 (ES)
Title: Procedimiento de fabricacion y tesela vitrea obtenida por dicho procedimiento.
Inventor: LACOMBA MIRO CARLOS
IPC: B32B17/00
Filed: 2006-04-06
Granted: 2009-02-16
Abstract: Procedimiento de fabricación y tesela vítrea obtenida por dicho procedimiento. Procedimiento de fabricación para una tesela vítrea que comprende, un primer triturado de porciones de vidrio de gran tamaño mediante un molino rompedor para obtener porciones de pequeño tamaño; un segundo triturado de las porciones de pequeño tamaño a través de un molino de bolas para obtener polvo de vidrio de diferentes granulometrías; adición al polvo de vidrio de agua para obtener una primera mezcla de vidrio; obtención de una segunda mezcla constituida por una frita de vidrio; rellenado de un molde correspondiente a la tesela de una primera capa a base de la primera mezcla; rellenado del molde correspondiente a la tesela de una segunda capa a base de la segunda mezcla, situada por encima de la primera capa; prensado simultaneo de la primera capa y la segunda capa obteniendo una pieza prensada; horneado de la pieza prensada para obtener una pieza horneada; y enfriado de la pieza horneada para obtener la tesela final.
Patent ES-2300200-B1 (ES)
Title: Transposon hsmar2 y su uso en la generacion de vectores utiles en terapia genica somatica.
Inventor: CHILLON RODRIGUEZ MIGUEL
IPC: C12N9/22
Filed: 2006-10-18
Granted: 2009-05-01
Abstract: Transposón  Hsmar2  y su uso en la
generación de vectores útiles en terapia génica somática. La
invención se refiere la  generación del primer transposón activo
humano de ADN, el transposón Hsmar2, así como al análisis de su
actividad en  células de mamífero y en particular en células
humanas. Concretamente, la invención se refiere a la caracterización
 funcional de Hsmar2 y a su capacidad de transponer fragmentos de
ADN que se encuentran flanqueados por las  secuencias TR de hsmar2
de un genoma donante a un genoma receptor.
Patent ES-2299392-B1 (ES)
Title: Dispositivo sensor organico y sus aplicaciones.
Inventor: LAUKHINA ELENA E
IPC: H01L51/00
Filed: 2006-11-14
Granted: 2009-04-16
Abstract: Dispositivo sensor orgánico y sus
aplicaciones. 
     La invención se caracteriza porque comprende una
capa de material orgánico sensible a los cambios de presión,
tensión, deformación y/o de gases; donde dicha capa orgánica está
formada por al menos una sal o complejo conductor que   comprende
una molécula A y un dopante D, siendo dicha molécula A una molécula
o macromolécula orgánica dadora o  aceptora de electrones capaz de
formar una sal o complejo conductor, pero que sin estar dopada no
presenta  conductividad, y siendo dicho dopante D un compuesto
aceptor o dador de electrones capaz de formar una sal o  complejo
conductor con la molécula o macromolécula A; y un sustrato base, en
íntimo contacto con dicha capa de  material orgánico, donde dicho
sustrato base es inerte a dicha capa de material orgánico. 
     El dispositivo sensor tiene aplicación en la
electrónica molecular o electrónica de plásticos y, en particular,
en el campo  de sensores orgánicos.
Patent ES-2306602-B1 (ES)
Title: Instalacion automatica de almacenamiento de cuerpos cilindricos huecos, aplicable a camisas de impresion.
Inventor: JOVE COLOM ALBERT
IPC: B65G1/137
Filed: 2007-04-05
Granted: 2009-12-23
Abstract: Instalación automática de almacenamiento de
cuerpos cilíndricos huecos, aplicable a camisas de impresión. 
     Unos sitios de almacenamiento reciben y soportan
cuerpos cilíndricos huecos (1) en posición vertical, y un 
dispositivo manipulador (2) desplaza un órgano de asido (3) para
tomar dichos cuerpos (1) de su sitio de  almacenamiento y
entregarlos en un sitio de transferencia en situación vertical, o
viceversa, comprendiendo cada sitio  de almacenamiento unos vástagos
de soporte (5) derechos, fijados a una estructura, estando cada
vástago de soporte  (5) adaptado para ser insertado al interior de
uno de los cuerpos (1) para soportarlo en su sitio de almacenamiento
en  situación vertical, y teniendo dicha estructura varias regiones
diferenciadas, donde los sitios de almacenamiento  determinados por
vástagos (5) están dispuestos según unos patrones de distribución
diferentes, adaptados a  diferentes tipos de cuerpos cilíndricos
huecos (1) con diferentes diámetros exteriores o interiores y
longitudes  comunes o no.
Patent ES-2352391-B1 (ES)
Title: Mueble de asiento.
Inventor: KRISTEN MARTIN
IPC: A47C1/036
Filed: 2007-01-10
Granted: 2011-09-26
Abstract: Mueble de asiento. 
     Para crear un mueble de asiento constituido por
un cuerpo (1), un respaldo (2) sujeto al cuerpo (1) con posibilidad
de regulación de su inclinación, un respaldo (2) sujeto al cuerpo
(1) con posibilidad de desplazamiento y de regulación de su
inclinación, una parte de asiento (3) sujeta al cuerpo (1) con
posibilidad de desplazamiento y de regulación de su inclinación, y
un reposacabezas (4) sujeto al cuerpo (1) en forma basculable, en
cuyo mueble de asiento se realice con el desplazamiento de la parte
de asiento y del respaldo desde la primera posición de uso a la
segunda posición de uso y de vuelta a la primera posición de uso una
regulación simultánea del reposacabezas sin que se requiera para
ello una manipulación especial de parte del usuario, se propone que
el reposacabezas (4) está unido con el respaldo (2) a través de un
miembro de ajuste (5) por medio del cual el reposacabezas (4),
cuando el respaldo (2) se encuentre en la primera posición de uso,
sea desplazado forzosamente a la posición horizontal dirigida hacia
atrás y por medio del cual el reposacabezas (4) sea basculado hacia
la segunda posición de uso.
Patent ES-2357286-B1 (ES)
Title: Paracaídas de conos con freno en espiral.
Inventor: PORRAS VILA FCO JAVIER
IPC: B64D19/00
Filed: 2008-04-23
Granted: 2012-02-29
Abstract: El Paracaídas de conos con freno en espiral, es una plancha de un material ligero, sea plástico, fibra de vidrio, -o, lo que sea-, que pretende impedir que pueda caer en vertical, atraída por la fuerza de gravedad. Está formada por unos conos (2) situados en la parte superior de la plancha (1), que tienen, en el vértice, una salida tubular (3), que gira y se retuerce sobre sí misma, formando así en el tubo, unas espiras (3) que acaban en un hueco (4) para la salida del aire que ha entrado por la base abierta de los conos.
Patent ES-2371586-B1 (ES)
Title: Dispositivo de tracción por cable.
Inventor: SCHUHMACHER ANSUATEGUI GERARDO
IPC: B66B7/02
Filed: 2009-02-27
Granted: 2012-11-13
Abstract: Dispositivo de tracción para cables; basado en el uso de poleas que son rodeadas mediante el cable para incrementar el grado de fricción entre ambos elementos. Incorpora medios que evitan la interferencia mecánica en el lazo que establece el cable en torno a la polea; hace uso de dos o más poleas, incrementando la seguridad. La configuración especial del dispositivo permite la tracción simultánea a través de sus poleas.
Patent ES-2382060-B1 (ES)
Title: Producto a base de limón formado por medias rodajas de limón envasadas en cubetas y tarrinas de distintos tamaños
Inventor: SANCHEZ MORALES MARTIN ANGEL
IPC: A23L19/00
Filed: 2009-09-25
Granted: 2013-05-10
Abstract: Producto a base de limón formado por medias rodajas de limón envasadas en cubetas y tarrinas·de distintos tamaños.
Patent ES-2390729-B1 (ES)
Title: Método mejorado para la fabricación de un cuerpo de mortero de cemento y una instalación para su realización
Inventor: FRADERA PELLICER CARLOS
IPC: B01F29/83
Filed: 2011-04-20
Granted: 2013-11-06
Abstract: Método mejorado para la fabricación de un cuerpo de mortero de cemento y una instalación para su realización.#El método consiste en que en una amasadora vertical, dotada de desagüe practicable en el fondo plano de la misma, se introduce una cantidad de agua correspondiente a una cantidad comprendida entre el 29% y el 32% del peso de cemento, a la que se incluyen los aditivos y colorantes, tras lo cual se incorpora un peso de árido de superficie redondeada y de granulometría de 0,1 y 1 mm, que presenta un contenido en sílice del 99,5% y un peso de cemento de partículas de 5 micras comprendido entre el 27% y el 37% del peso en seco de árido y cemento, tras lo cual se continúa en la operación de amasado hasta conseguir; una masa totalmente homogénea, la cual es vertida en un molde y fraguada en el mismo con la superficie de la citada masa en contacto con una cubierta que determina el encapsulado del molde.
Patent ES-2639662-B1 (ES)
Title: Almacén y dispensador de cable con alojamiento para múltiples bobinas
Inventor: VARELA SILVA RAMON FERNANDO
IPC: B65H49/32
Filed: 2016-04-27
Granted: 2018-08-01
Abstract: Almacén-dispensador de cable para múltiples bobinas que permite suministrar cables (6) a una máquina de corte de cables y que comprende un cuerpo de almacenamiento (1) cilíndrico, con una cara lateral (2), montado sobre un eje vertical respecto del que puede girar y por el que puede desplazarse verticalmente. El cuerpo de almacenamiento (1) está dividido en una pluralidad de compartimentos (4), accesibles por la cara lateral (2), que son adecuados para alojar una bobina (5) de cable (6), un soporte inferior (3), donde el eje vertical está unido a dicho soporte inferior (3) y unos medios de desplazamiento vertical del cuerpo de almacenamiento (1).
Patent HR-P20020983-B1 (HR)
Inventor: VREEDE UNNO DE
IPC: B65D51/16
Filed: 2002-12-11
Abstract: Sredstvo za pakiranje koje se sastoji od spremnika koji ima gornju stranicu za zatvaranje smještenu duž gornjeg horizontalnog rebrastog pregiba, koji sadrži tekući pekarski kvasac, naznačeno time, što je spremnik opskrbljen sredstvom za otpuštanje previsokog pritiska, i što ima volumen između 0.1 i manje od 100 litara, te se sredstva za otpuštanje pritiska sastoje od jednog ili više ureza udaljenih od 0,5 mm do 5 mm od gornjeg horizontalnog rebrastog pregiba. Patent sadrži još 15 patentnih zahtjeva.
Patent JO-860-B1 (JO)
Title: Process for purification of phosphoric Acid
Inventor: FERNANDO ORE
Filed: 1977-04-19
Granted: 1978-09-30
Abstract: A process for the extraction of metallic impurities from unpurified phosphoric acid by solvent extraction employing an organic extractant phase containing an organic sulphonic acid in its H+ form. after the extraction step and separation of the extractant phase and phosphoric acid, residual P2O5 values are selectively recovered from the extractant phase by washing the extractant phase with dilute equeous phosphoric acid. the sulphonic acid in the extractant phase can be regenerated to its H+ form with a mineral acid and recycled
Patent JO-3272-B1 (JO)
Title: Solid preparation comprising alogliptin and metformin hydrochloride
Inventor: KAZUMICHI YAMAMOTO
Filed: 2008-07-16
Granted: 2018-09-16
Abstract: The Present invention provides asolid preparation containing compound (I) [ compound (I) is as defined in the specification] or a salt thereof, and metformin hydrochloride, which is useful as a therapeutic drug for diabetes and the like, and superior in the preservation stability. A solid preparation having a first part and a second part: a first part: apart containing compound (I) or a salt thereof and substantially free of metformin hydrochloride a second part: a part containing metformin hydrochloride and substantially free of compound (I) and a salt thereof.
Patent JO-P20170017-B1 (JO)
Title: Pharmaceutical composition comprising bispecific antibody constructs
Inventor: CORNELIUS POMPE
IPC: C07K16/28
Filed: 2017-01-24
Granted: 2021-08-17
Abstract: The present invention provides novel and stable pharmaceutical compositions comprising bispecific single chain antibody constructs, cyclodextrins and a buffer.
Patent KR-790000538-B1 (KR)
Title: Method of manufacturing enzyme rich in lipase
Inventor: BETZING H
Filed: 1975-02-21
Granted: 1979-06-02
Abstract: Pancreatin(I), a useful material for dyspepsia and digestive disorder therapy, and an enzyme disorder therapy, and an enzyme prepn. rich in lipases, was prepd. Thus, I was prepd. by autolyzing pancreatic tissue with CHCI3-BuOH(9:1), standing for 24-96 hr at 0.4≰C to partially defat, then defatting and dehydrating with acetone, extg. with an aq. 5% EtOH soln., pptg. with acetone, isolating, and drying the ppt. obtained. I had a lipase activity 240 units/g. temp. played an important aprt in this activity.
Patent KR-800001675-B1 (KR)
Title: Stable insecticidal composition
Inventor: SHIMIZU HIROMICHI
IPC: A01N25/22
Filed: 1975-04-24
Granted: 1980-12-31
Abstract: Stable and solid pesticidal compds. are formulated with a high b.p and low-polar solvent, a pesticide, either carboxylic acids or carboxylic anhydrides, plus anhydrous CaCI2 may be placed in the package of pesticides.  Thus, a powdery formulation was made by mixing Dimex2,3, stearic acid 1.0 and zeeklite 96.7 parts.  This prepn.(50g) was sealed in a 100ml jar with a package contg. 10g CaO.
Patent KR-800000049-B1 (KR)
Title: Process for improving the adhesion of high-temperature-resistant aromatic poly-1,3,4-oxadiajole filaments to rubber
Inventor: WAMPETICH M
Filed: 1975-05-12
Granted: 1980-01-28
Abstract: The adhesion of poly(1,3,4-oxadiazole) fibers to rubber was improved by treatment with N-glycidyl compds. prior to dipping in the conventional formaldehyde-resorcinol polymer(I) adhesives.  Thus, poly(p-phenylene-1,3,4-oxadiazole) fibers were treated with an aq. emulsion contg. 2.5% N, N', N'-tetraglycidyl p-phenylenediamine, dried at 250≰C, and made up into cord, which was then dipped in a I latex bath at 155≰C and dried at 225≰C.
Patent KR-810000332-B1 (KR)
Title: Preparation of maleic anhydride
Inventor: BREMER N
IPC: C07D307/60
Filed: 1978-04-03
Granted: 1981-04-20
Abstract: Maleic anhydride was prepd. by oxydation of n-butane, n-butene, 1,3-butadiene or these compd.'s mixt. with O2 at 250 - 600≰C vapor phase in the presence of improved catalyst which was composed of oxide of Ti and P necessarily and didn't comprised Ba.  Thus, titanium dioxide 19.98 g, 85.4% phosphoric acid 28.69 g, vanadium pentoxide 84.2 g and distilled water 600 ml were mixed to make slurry.  This aq. slurry was refluxed for 2 hr, evapd., dried at 110≰C for 12 hr, calcined at 427≰C for 2 hr and crushed to 10 - 30 mesh to give Til.OP1.0-Ox useful catalyst.
Patent KR-840000829-B1 (KR)
Title: Electronic type air fuel ratio in internal combustion engine
Inventor: ABE OSAMU
IPC: F02D41/00
Filed: 1980-05-19
Granted: 1984-06-15
Abstract: An electronic type air/fuel ratio control system for use in gasoline engines comprises an accelerator; a part to detect the manipulation angle of the accelerator; a shunt conduit that bypasses a throttle valve; an air bypass valve exposed in the shunt conduit which controls the flow rate of bypass air; and a control circuit. The control circuit responds to the output of the accelerator manipulation angle detector and generates a control signal for the air bypass valve. This ensures that the air/fuel ratio is controlled very accurately when the air flow rate is low.
Patent KR-840000313-B1 (KR)
Title: Sharpness emphasizing method
Inventor: ATOGI HITOMI
IPC: G03F1/00
Filed: 1980-05-29
Granted: 1984-03-16
Abstract: A resolution control for a color reprodn., process uses sharp and diffuse images of the signal and derives control signals which are processed to achieve max. possible resolution of the image.  The processing is electronic and provides clear images without grain.  The processor separates the even background signals from the resolution edges through the rapidly varying signal scan.  The processed signals from the sharp and diffuse images are substracted from each other to provide a high resolution image without smearing. This process reduces apparent grain when, e.g. 35mm film is greatly enlarged.
Patent KR-830001771-B1 (KR)
Title: Am 이중통신 트랜시버
IPC: H04B7/15
Filed: 1980-06-07
Granted: 1983-09-03
Abstract: 내용 없음.
Patent KR-840000940-B1 (KR)
Title: Equalizer amplifier
Inventor: SUEYOSHI SUSUMU
IPC: H03F1/32
Filed: 1980-10-02
Granted: 1984-06-29
Abstract: An equalizer amplifier in which non-linear distortion is substantially eliminated. An input signal is applied to the base of a first transistor the output of which is applied to the base of a second transistor of the opposite conductivity type to the first transistor. Currents are supplied to the first and second transistors in a constant ratio. The output from the circuit is provided in response to current flowing in one of the first and second transistors. At least one of the amplifier gain determining elements has a reactance component which varies depending on frequency.
Patent KR-840001969-B1 (KR)
Title: Process for preparing sulfonglureas
Inventor: WEYER RUDI
IPC: C07D209/46
Filed: 1980-12-23
Granted: 1984-10-26
Abstract: A method for the preparation of sulfonylurea compds. of formula I[X = optionally substituted C3-6 alkylene or alkenylene; Y = C2-3 alkylene; R1 = C4-6 alkyl, cycloalkyl, (di)alkylcycloalkyl or (alkyl) cycloalkenyl, methylcyclopentylmethyl, cyclohexenylmethyl  and their salts were developed. The title compds. have pronounced blood sugar- level-lowering action and are used as a treatment agent for diabetes.
Patent KR-860000897-B1 (KR)
Title: Producing method of human erythropoietin
Inventor: SUKIMODO KANAME
IPC: A61K35/12
Filed: 1981-08-18
Granted: 1986-07-16
Abstract: Human erythropoietin(I) was produced by implanting human cells capable of producing (I) into any warm-blooded animal other than a human, or by propagating the cells in a device which supplies them with nutrient body fluid directly from warm-blooded animals. The grown cells were then incubated under the reduced O2 condition. Thus, human renal tumor cells and leukemic lymphoblastoid cells were suspended in saline soln. and mixed with inactivated Sendai virus at 37≰C for 1 min. After cloning, the hybridoma cells were implanted in nude mice for 5 wks. and the growing  tumors were extd., minced, suspended in physiol. soln. contg. trypsin and washed with Earle 199 medium contg. 10% calf fetal serum. The cell suspn. was incubated at 370/933 mbar for 20h and sonicated to give 170 unit (I)/ml. (I) is renal cell produced hormone essential to the formation of erythrocytes.
Patent KR-830002486-B1 (KR)
Inventor: KIM JONG MIN
IPC: C12P13/14
Filed: 1982-02-12
Granted: 1983-10-26
Abstract: 내용 없음.
Patent KR-880001847-B1 (KR)
Title: Process for preparing derivatives of new beta-lactam acetic acid
Inventor: PABARA DUSIO
IPC: C07D487/04
Filed: 1982-03-11
Granted: 1988-09-22
Abstract: Novel beta-lactam acetate derivs. having formula (I), used for intermediates for producing 1-azabicyclo [3,2,0  hept-2-en antibiotics, are prepd. by oxidn. of acetidinyl ethanol with oxygen in the presence of catalysts i.e. carbon adsorbed platinium, John's reagent, permanganate at pH 4-9 and at room temp..  In the formula, R is (substd.) alkyl (by amino), hydroxy, alkoxy, alkenyl, di- alkylamino.
Patent KR-860000851-B1 (KR)
Title: Process for preparing n-(2-(((5-dimethylamino)-methyl-2-furanyl)-methyl)thio)-ethyl)-n'-(3,4-methylenedi-oxy benzyl)-2-nitro-1,1-ethene diamine
Inventor: VINCENTIIS LEONARDO DE
IPC: C07D307/52
Filed: 1982-08-17
Granted: 1986-07-09
Abstract: The title compds. (I) are prepd. for use as a medicine for ulcers. 2- ((2-Aminoethyl)-thiomethyl)-5-(dimethylamino methyl)furane is reacted with 1-nitro-2-methylthio-2-(3,4-methylenedioxy benzylamino)-ethene to give the title compd. (I). The reaction temperature is 50 - 100≰C and this reaction is performed in a noncationic solvent. The solvent is 1,1,2-trichloro ethene.
Patent KR-910010162-B1 (KR)
Inventor: MCNEIN BRIAN A
IPC: F25J3/04
Filed: 1983-07-25
Granted: 1991-12-17
Abstract: 내용 없음.
Patent KR-870000980-B1 (KR)
Title: Preparation process for derivatives of w-amino acids and salts thereof
Inventor: CORDI ALEXIS
IPC: C07C227/02
Filed: 1983-08-20
Granted: 1987-05-16
Abstract: Omega-amino acid derivs. of formula (I) and its pharmaceutically useful salts(with metal, acid or base) are prepd. by conversion of (II) into (I). R is C2-12 straight or side-chain alkyl, phenyl or phenoxy(may substd. with 1-Me, 1-2 Methoxy or 1-Cl) substd. C3-4 straight or side-chain alkyl; R1 is H, C2-11 straight or side-chain alkanoyl; R2 is amino gp. (-NH2); n=3,4 or 5; Z is carboxylic acid, nitrile, ester or amidine.
Patent KR-870001849-B1 (KR)
Title: Method of treating final continuous cast strand in a horizontal continuous casting process
Inventor: MORI DAKASUKE
IPC: B22D11/126
Filed: 1984-01-17
Granted: 1987-10-17
Abstract: Drawing a cast strand is discontinued when the level of molten metal falls below a predetermined level above the supply tundish, during the final stage of casting.  Redrawing continues after a time interval determined from the equation t (t=0.02). Dpowder2 to 0.1 Dpowder2 where t is time in minutes and D is the inner diameter(cm) of the feed nozzle for circular nozzle,  for rectangular nozzle D is the length of minor side(cm) of the feed nozzle, for elliptical nozzle D is the length of minor axis (cm) of the feed nozzle.  The method is useful in the final stages of a horizontal casting process.
Patent KR-900001874-B1 (KR)
Title: Air flow controlling apparatus
Inventor: HIROSAKI YOSHIHIKO
IPC: F04D27/00
Filed: 1984-04-03
Granted: 1990-03-26
Abstract: An air flow controll apparatus includes a damper located in an air course, a ventilator for feeding a wind by way of the damper, an electric motor for driving the ventilator, a changing over means for alternatively connecting the electric motor to a commercial power source or a variable frequency power source, and a damper controlling means for controlling the opening of the damper to obtain a desired air flow.  The air flow control apparatus is characterised by a preceding control signal generator responsive to an instruction.
Patent KR-900003038-B1 (KR)
Title: Preservative composition
Inventor: WATKINS JOHN B
IPC: C09D5/14
Filed: 1984-06-18
Granted: 1990-05-04
Abstract: A preservative compsn. comprises an emulsion of a wood preservative grade creosote, 5-95% water and a pre-dispersed micronized pigment. The compsn. contains 2.5 wt.% rheology structuring agent, 0.25-10 wt.% alkali metal of wood-derived resin, 0.1-5 wt.% surfactant, 0.25- 5 wt.% ligninsulphonate and 1.25-2 wt.% pigment modifying resin based on the total wt. of the emulsion. The compsn. is ultra-stable in the presence of wood extractives and has a strong buffering capacity.
Patent KR-850000210-B1 (KR)
Title: Process for preparing oxazolines
Inventor: BERNAUER KARL
IPC: C07D263/10
Filed: 1984-10-05
Granted: 1985-03-06
Abstract: Oxazolines (I; R1,R2,R3,R4,R5,R6 = each H; R7,R8 = lower alkyl) were prepd. by the reaction of II and acetone. Thus, 1.275 kg 4'- (dimethylamino) benzoine and 7.5  acetone were reacted with 1.140 kg ammonium acetate to give 5-(p-(dimethylamino)phenyl)2,2-dimethyl-4- phenyl-3-oxazoline. (I) are orally active antidiabetic agents. Dosage: 200-800 mg/day.
Patent KR-920010849-B1 (KR)
Inventor: OKU AKIHIROSHI
IPC: H01L27/115
Filed: 1985-01-09
Granted: 1992-12-19
Abstract: 내용 없음.
Patent KR-900002425-B1 (KR)
Title: Method for punching ceramic green sheet
Inventor: TAKASAKI MITSUHIRO
IPC: B26F1/00
Filed: 1985-04-18
Granted: 1990-04-14
Abstract: The positioning of work (12) and the dividing of an upper die set (11) are conducted by means of servomotors (1,15,18).  After the edge of the punch attached to the upper die set comes out of the work during an upward stroke of the die set the upper die set makes at least one cycle of upward and downward movements without operation of the X-Y table so that the punch is driven through the same hole at least twice.  An instantaneous stopping and reversing of the die driving servomotor is effected to raise or lower the upper die set before it reaches its lower or upper stroke end, respectively.