baber/WOPTO huggingface dataset:
Patent IT-1254100-B (IT)
Title: Hydraulic lift system
Inventor: MORUZZI LUCIANO
IPC: E03B/
Filed: 1991-10-31
Granted: 1995-09-07
Abstract: The invention in question refers to a hydraulic system able to lift water. The system comprises, hydraulically connected in parallel to a conduit for supplying water to one or more consumer, at least one electrical centrifugal pump of variable speed and at least one electrical centrifugal pump of fixed speed. The electrical pumps are combined with a microprocessor able to actuate them in accordance with programmed operational parameters. A plurality of sensors for measuring and monitoring the operating conditions lead to the microprocessor. <IMAGE>
Patent IT-1250472-B (IT)
Title: Dispositivo limitatore di coppia per attuatori gasidraulici.
IPC: F16K31/12
Filed: 1991-01-16
Granted: 1995-04-07
Abstract: Il trovato si inserisce nel campo dei regolatori di coppia ed in particolare dei limitatori di coppia per attuatori gasidraulici che presiedono al comando di valvole/.Più precisamente si riferisce ad un dispositivo limitatore di coppia che limita la cappia di sollecitazione di una valvola mandando in scarico il gas qualora la differenza di pressione tra il gas contenuto in una camera (11) e l'olio di una camera (9) superi un certo valore prefissato impostato mediante la taratura di una molla (6).Il dispositivo è utilmente applicato per impedire rotture e danneggiamenti alle valvole in caso di sollecitazioni di intensità troppo elevata conseguenti a situazioni di blocco delle valvole stesse.
Patent IT-1258884-B (IT)
Title: Circuito filtrante per ottenere segnali in alta frequenza.
Inventor: AGAHI-KESHEH DARIOUSH
IPC: H03H7/01
Filed: 1992-10-23
Granted: 1996-03-01
Abstract: Oggetto dell'invenzione è un circuito di filtro passa basso (200; 600; 700) per un radiotelefono (950) il quale filtra le componenti armoniche spettrali di un segnale modulato generato dal radiotelefono (950). Il circuito di filtro (200; 600; 700) è costituito da induttori (260, 280; 660, 680; 760, 780) e da condensatori (202, 220, 240; 602, 620, 640; 702, 720, 740) in cui ciascun induttore (260, 280; 660, 680; 760, 780) e ciascun condensatore (202, 220, 240; 602, 620, 640; 702, 720, 740) del filtro (200; 600; 700) è costituito da una porzione ad elementi distribuiti (604, 622, 642, 666, 682; 704-714, 722-736, 742-752, 762, 764, 766, 782, 784, 786) e da una porzione ad elementi discreti (616, 618, 637, 638, 654, 656, 664, 688; 716, 718, 737, 738, 754, 756, 768, 788). Le porzioni ad elementi distribuiti di ciascun induttore e di ciascun condensatore del filtro attenuano le componenti spettrali a frequenza superiore di un segnale applicato ad essi. Le porzioni ad elementi discreti di ciascun induttore e di ciascun condensatore del filtro attenuano le componenti spettrali a frequenza inferiore del segnale applicato ad esse.
Patent IT-1264317-B (IT)
Title: Perfezionamento dei copatti trasparenti, con schermo solare incorporato, per finestre e simili.
Inventor: DEL CIOTTO CAPPELLARI COSTANZA
IPC: E06B/
Filed: 1992-12-18
Granted: 1996-09-23
Abstract: Il perfezionamento dei compatti trasparenti, con schermo solare incorporato per finestre e simili, è costituito dall'inserimento di uno schermo 3 tra due vetri 1-2, laminati con film 4 di polivinilbromuro PVB, con processo di laminazione in autoclave.
Patent IT-1272995-B (IT)
Inventor: GOBBINI MAURO
IPC: C07J71/00
Filed: 1994-05-26
Granted: 1997-07-01
Abstract: A process for producing 3 beta , 14 beta -dihydroxyethianaldehyde is disclosed wherein the oxidation of the lactone ring of digitoxigenin-3-acetate is conducted with an alkaline periodate in the presence of a catalytic amount of ruthenium tetroxide obtained in situ by reacting RuO2 hydrate or RuCl3 with the alkaline periodate.
Patent IT-1259574-B (IT)
Title: Fixture for replacement of dies
IPC: B30B/
Filed: 1992-05-08
Granted: 1996-03-20
Abstract: Fixture for replacement of dies intended to be used on a press 1, having a horizontal plane of support 4, provided with a plurality of slots 8. The fixture contains at least one pair of hydraulic jacks intended to be placed in the respective slots 8 of the support plane 4 of the press 1 and at least one pair of guides 44, 46, 48, intended to be placed inside respective slots 8 of the support plane 4 of the press. The guides are provided on their surface with a plurality of rolling elements 50 on which the dies 6 are intended to slide during the loading and unloading operations. <IMAGE>
Patent IT-1264061-B (IT)
Title: Process for the production of a nucleotide 5
IPC: C07H19/04
Filed: 1993-07-07
Granted: 1996-09-09
Abstract: Process for the production of a nucleotide 5' which comprises maintaining a suspension of nucleosides in an organic solvent at a temperature of not less than approximately 20 degree C and then subjecting the resulting suspension to nucleoside phosphorylation. According to this invention nucleotide 5' can be produced from a nucleoside in high purity and in high yield during a short reaction time, and the removal of impurities in the process of purification of the nucleotide is easily performed.
Patent IT-1263491-B (IT)
Title: Electrical convection and radiation stove
IPC: H05B/
Filed: 1993-02-23
Granted: 1996-08-05
Abstract: Electrical convection and radiation stove including a source of heat and a radiating body that forms a housing chamber for the heat source and consists of a supporting metal shell in contact with the source of heat and a panel of material that is able to store heat that closes and covers the shell. <IMAGE>
Patent PT-109800-B (PT)
Title: Método para estimular a criatividade usando estimulação magnética transcraniana repetitiva (rtms)
Inventor: MARIA DA ASSUNÇÃO MORAIS E CUNHA VAZ PATTO
IPC: A61N2/00
Filed: 2016-12-22
Abstract: A INVENÇÃO REFERE-SE A UM MÉTODO PARA USAR A ESTIMULAÇÃO MAGNÉTICA TRANSCRANIANA REPETITIVA (RTMS) COM BASE NA INDUÇÃO ELETROMAGNÉTICA, ONDE UMA CORRENTE IÔNICA SECUNDÁRIA INDUZIDA É CRIADA NUMA LOCALIZAÇÃO ESPECÍFICA E DESEJADA DO CÉREBRO, ESTIMULANDO REDES NEURONAIS E ALTERANDO A FORÇA E AS LIGAÇÕES DA SINAPSE AO REORGANIZÁ-LAS. ESTA TÉCNICA TEM SIDO USADA COMO UMA FORMA DE TRATAMENTO PARA DOENÇAS NEUROLÓGICAS E PSIQUIÁTRICAS, NO ENTANTO, O OBJETIVO DA PRESENTE INVENÇÃO É DESCREVER UMA METODOLOGIA ESPECÍFICA PARA MELHORAR A CAPACIDADE HUMANA RELACIONADA COM A CRIATIVIDADE. AS APLICAÇÕES DA NOSSA INVENÇÃO SÃO MÚLTIPLAS E ABERTAS, POIS PODEM AUMENTAR A CAPACIDADE DO SUJEITO DE INOVAR NA RESOLUÇÃO DE PROBLEMAS, SOB UMA SOCIEDADE CADA VEZ MAIS EXIGENTE.
Patent PT-115230-B (PT)
Title: Processo artesanal de produção de vinagre de vinho.
Inventor: PEDRO CRUZ
IPC: C12J1/08
Filed: 2018-12-27
Abstract: A PRESENTE INVENÇÃO ENQUADRA-SE NA ÁREA DA PRODUÇÃO DE VINAGRES. É OBJECTO DA PRESENTE INVENÇÃO UM PROCESSO ARTESANAL DE PRODUÇÃO DE VINAGRE DE VINHO QUE COMPREENDE OS SEGUINTES PASSOS: A) DILUIÇÃO DO VINHO SELECIONADO COMO MATÉRIA-PRIMA ENTRE 30 A 70%; B) PREPARAÇÃO DO INÓCULO QUE INCLUI MAIORITARIAMENTE BACTÉRIAS ACÉTICAS DO GÉNERO ACETOBACTER E GLUCONOBACTER; C) INTRODUÇÃO DO VINHO DO PASSO A) E 10% A 30% DO INÓCULO SELECIONADO DO PASSO B), NUM FERMENTADOR COM SUPORTE POROSO NO QUAL SERÃO COLOCADAS VIDES E APARAS, SENDO O VOLUME TOTAL DE 20% A 40% DO VOLUME ÚTIL DO FERMENTADOR; D) INÍCIO DA FERMENTAÇÃO COM RECIRCULAÇÃO DO LÍQUIDO E MANTENDO AS ENTRADAS DE AR DO FERMENTADOR ABERTAS; E) CONTROLO DO CONTEÚDO DE ÁLCOOL PRESENTE ATÉ 1%; F) ADIÇÃO DE VINHO DILUÍDO A 50% QUANDO A QUANTIDADE DE ÁLCOOL SE APROXIMAR DE 1%; G) FINALIZAÇÃO DA FERMENTAÇÃO QUANDO É ATINGIDO O VOLUME TOTAL ÚTIL DO FERMENTADOR E A CONCENTRAÇÃO DE ÁLCOOL É INFERIOR A 1% E ACIDEZ IGUAL OU SUPERIOR A 6%. É AINDA UM OBJECTO DA PRESENTE INVENÇÃO UM VINAGRE PRODUZIDO ATRAVÉS DO PROCESSO NELA DIVULGADO.
Patent PT-116832-B (PT)
Title: Chupeta para medição melhorada de temperatura
Inventor: ANABELA DE SOUSA SALGUEIRO OLIVEIRA
IPC: A61J17/00
Filed: 2020-10-15
Abstract: A PRESENTE INVENÇÃO ENQUADRA-SE NA ÁREA DAS CHUPETAS, EM CONCRETO DAS CHUPETAS COM CAPACIDADE DE DIAGNÓSTICO DO SEU UTILIZADOR, NO PRESENTE CASO ATRAVÉS DA MEDIÇÃO DA TEMPERATURA DO UTILIZADOR, COMO UMA CRIANÇA. É OBJECTO DA PRESENTE INVENÇÃO UMA CHUPETA (1) QUE COMPREENDE UMA PORÇÃO DE TETINA (2), UMA PORÇÃO DE BASE (3) PARA SEGURAR A PORÇÃO DE TETINA (2), MEIOS DE MEDIÇÃO DE TEMPERATURA, CONFIGURADOS PARA MEDIR A TEMPERATURA NA TETINA E CONSEQUENTEMENTE NO INTERIOR DA BOCA DE UM UTILIZADOR, COMO UMA CRIANÇA, UM INDICADOR (4) TERMOSSENSÍVEL COM NANOPARTÍCULAS TERMOSSENSÍVEIS CONFIGURADAS PARA ALTERAR A SUA COR DE ACORDO COM A TEMPERATURA MEDIDA PELOS MEIOS DE MEDIÇÃO DE TEMPERATURA E ASSIM PROVIDENCIANDO A INFORMAÇÃO INDICATIVA SOBRE A TEMPERATURA MEDIDA. A ENERGIA TÉRMICA É TRANSMITIDA DOS LÁBIOS DO BEBÉ ATÉ AO INDICADOR (4) TERMOSSENSÍVEL, E ASSIM O INDICADOR (4) NÃO TEM DE ESTAR MONTADO NA TETINA (2), GARANTINDO A SEGURANÇA DA SOLUÇÃO.
Patent RO-82690-B (RO)
Inventor: EPSTEIN RONALD ALAN
IPC: B01J31/38
Filed: 1981-07-17
Abstract: Procedeul de obtinere a unui catalizator utilizat la polimerizarea alfa-olefinelor, constî în aceea ca: (I) se supune reactiei o halogenura aleasa între clorura, bromura sau iodura de magneziu cu un fosfit organic cu formula: (vezi formula) în care R1, R2 si R3 reprezinta fiecare un radical alchil continînd 1...20 atomi de carbon, gupa aril sau aril substituita în care gruparea aril contine 6...18 atomi de carbon, iar substituentul alchil contine 1...20 atomi de carbon; (II) dupa care produsul de reactie astfel obtinut se copilverizeaza cu un complex de halogenura de titan aleasa dintre TiCl3 sau TiCl4 si un donator de electroni, ales dintre benzoatul de metil, n si i-butil, n-propil, n si i-amil, n-hexil, n-octil, 2-etil-hexil; (III) în final produsul copulverizat se supune reactiei cu TiCl3 sau TiCl4, cantitatea de fosfit organic aflîndu-se în concentratie de 0,01...10 moli/fosfit/mol compus de magneziu, iar cantitatea de titan din halogenura de titan este cuprinsa între 0,01% si 10%, în greutate exprimata cu totan metalic.
Patent TW-224521-B (TW)
Title: Improved liquid crystal display device
Inventor: KIKUCHI ZENTA
IPC: G02F1/139
Filed: 1992-09-25
Granted: 1994-06-01
Abstract: A kind of liquid crystal display device which includes a liquid crystal cell, a palarizer mounted in the light incident side of the liquid crystal cell and an analyzer mounted in the light outgoing side of the liquid crystal cell; the liquid crystal cell is made up of a pair of substrates and a liquid crystal material arranged between these substrates and twist orientated at about 90 degrees from one side of substrate toward the other side of substrate; the 1 pair of substrates are formed in the facing surfaces severally by mutually crossing electrodes and orientation films coating the electrodes; the liquid crystal display device further possesses at least 1 sheet of phase plate with biaxial nature installed between the plarizer and the analyzer, the drawing direction refractive index nx, the in-surface orthogonal direction refractive index ny and thickness direction refractive index nz which are mutually orthogonalized may satisfy the relation of ny<nz<nx. In accordance with this invention, it may enhance an excellent characteristic of visual angle through the phase plate with biaxial nature, and thereby to achieve an accurate phase display effect.
Patent TW-222016-B (TW)
Title: Method of digging ground with retaining wall supported by floor plates
Inventor: HWANG JIA-SHYONG
IPC: E02D17/02
Filed: 1992-11-23
Granted: 1994-04-01
Abstract: Method of digging ground with retaining wall supported by floor plates comprising: forming retaining walls and middle supports; digging the ground the first time; forming a raft-type base on the digging surface; placing support device under the base plates; placing floor plates on the base plates; setting suspending device on the bracket of the middle supports; digging the ground again and repeating the above steps until the basement is completed.
Patent TW-280774-B (TW)
IPC: A61P29/00
Filed: 1993-12-15
Granted: 1996-07-11
Abstract: The present invention relates to a novel pharmaceutical composition for the preparation of effervescent powders or tablets incorporating ibuprofen or one of its pharmaceutically acceptable salts as the active ingredient. This composition comprises: an effective amount of ibuprofen or one of its pharmaceutically acceptable salts; a pharmaceutically acceptable effervescent system comprising at least one alkaline carbonate and at least one organic acid, preferably in a sufficient amount to give a pH below about 8; and at least one pharmaceutically acceptable antioxidant in a sufficient amount to stabilize the ibuprofen. This composition has a remarkable stability both in powder form and in tablet form.
Patent TW-402600-B (TW)
Title: Indoloylguanidine derivatives
Inventor: KOJIMA ATSUYUKI
IPC: C07D209/08
Filed: 1994-04-20
Granted: 2000-08-21
Abstract: Novel indoloylguanidine derivatives shown by formula (1) which inhibit the Na<+>/H<+> exchanger activity and are useful for the treatment and prevention of a disease caused by increased Na<+>/H<+> exchanger activity.
Patent TW-242701-B (TW)
Title: Fabricating method for flash memory cell
Inventor: HORNG YEUN-DING
IPC: H01L27/115
Filed: 1994-05-31
Granted: 1995-03-11
Abstract: A fabricating method for flash memory cell with high reliability, which is applicable for implementing flash memory cell with semiconductor substrate, includes the following steps: 1. forming gate oxide, the first conductive layer and gate dielectric layer in sequences on the semiconductor substrate; 2. forming the second conductive strip on the gate dielectric, and forming shielding material by overlaying the second conductive strip; 3. etching the gate dielectric layer, the first conductive layer and gate oxide by using the shielding material as mask, to make the first conductive layer form the control gate of flash memory cell; 4. proceeding oxidization by using the shielding as mask, forming tunnel oxide on the semiconductor substrate, and forming isolating oxide on the side of control gate; 5. removing the shielding material; 6. forming the third conductive sidewall spacer on the side of the second conductive strip, which is located on the tunnel oxide, in the meantime, insulating with the control gate by isolating oxide to form the floating gate of the flash memory cell; 7. proceeding doping by using the second conductive strip and the third conductive sidewall spacer as mask, then forming the drain and source area of flash memory cell on the semiconductor substrate.
Patent TW-274506-B (TW)
Title: Continuous collective cultivation pots for the transplantation of nursing seedling
Inventor: ITO SUMIO
IPC: A01G9/10
Filed: 1995-04-17
Granted: 1996-04-21
Abstract: A plurality of continuous collective cultivation pots, each of which being made of paper material and jointed by connecting pieces; in addition, each pot sticked together with its adjacent pot(s) by water-soluble glue; the continuous collective cultivation pots characterized by: a nick being made on each connecting piece or the side surface of pot for the purpose of extending the connecting piece to match the interval between two pots.
Patent TW-345633-B (TW)
Title: Flexible printed circuit sleep switch for electronic device
Inventor: EDWARD D SUSKI
IPC: G06F1/32
Filed: 1995-07-08
Granted: 1998-11-21
Abstract: A detector which detects the position of a cover of an electronic device having a flexible cable interconnecting the cover with a base of the electronic device; the detector comprising: a flexible potentiometer mounted on the flexible cable in a location where the flexible cable bends when the cover is moved with respect to the base portion such that the flexible potentiometer bends when the flexible cable bends, the flexible potentiometer having a resistance which varies in accordance with the degree of bend of the flexible cable; and a detection circuit coupled to the flexible potentiometer, the detection circuit responsive to the resistance of the potentiometer to generate an output signal which indicates the position of the cover.
Patent TW-330309-B (TW)
Title: Novel transistor with ultra shallow tip and method of fabrication
Inventor: ROBERT S CHAU
IPC: H01L21/8238
Filed: 1995-12-14
Granted: 1998-04-21
Abstract: A method of forming transistors includes the following steps: 1) forming a thin dielectric layer on the first surface of semiconductor substrate; 2) forming a gate electrode on the dielectric film; 3) forming the first side-wall spacers on the opposite sides of gate electrodes; 4) forming a depression area under the first surface area and adjacent to contact area around the first pair of side-wall spacers in semiconductor substrate; 4) forming the first semiconductor material and a pair of source and drain region in the depression area; 5) diffusing doping materials from the first semiconductor materials to the substrate underneath the first side-wall spacers.
Patent TW-326024-B (TW)
Title: Method of conveying bulk material and device therefor
Inventor: MANFRED ILTZSCHE
IPC: B65G51/02
Filed: 1996-02-02
Granted: 1998-02-01
Abstract: A method for the conveyance of bulk materials by a compressible conveying medium and in the form of discrete plugs (1) from bulk materials in pipes, a specific amount (2) of compressed conveying medium existing between plugs (1), the conveying medium occupying a specific volume between plugs in series, which is characterized in that the amount (2^) of compressed conveying medium existing in each case between plugs (1^) in sequence in the downstream end portion (12b) of the pipe as compared to the amount (2) of compressed conveying medium existing between plugs (1) upstream of the end portion (12b) of the pipe (12) is reduced, thereby the energy released by the abrupt expansion of the volume of the conveying medium at the output end (10) of the pipe can be reduced.
Patent TW-342542-B (TW)
Title: Insert for a modular jack useful for reducing electrical crosstalk
Inventor: YAKOV BELOPOLSKY
IPC: H01R24/00
Filed: 1996-02-24
Granted: 1998-10-11
Abstract: An insert for a modular jack assembly comprising: (a) an insulative member having a top wall and a bottom wall, a front end, and a rear recess; (b) a first conductive means extending from adjacent the bottom wall of the insulative member across the rear recess to the top wall and then through the front end of the insulative member; and (c) a second conductive means extending from adjacent the bottom wall of the insulative member across the rear recess in non-contacting, overlapping relation with the first conductive member.
Patent TW-287249-B (TW)
Title: Method of combining fuzzy logic and PID complex procedure control
Inventor: JU YAW-DONG
IPC: G05B17/00
Filed: 1996-03-19
Granted: 1996-10-01
Abstract: A method of combining fuzzy logic and PID complex procedure control, which is used to generate control output for controlling one process, comprises of: (1) according to one input goal control value and process variable generated from the above process, calculating one control offset; (2) according to fuzzy logic, by the above control offset generating one auxiliary goal value so as to supply modification to the above goal control value; (3) adding the above goal control value and the above auxiliary goal value, generating one virtual goal value; and (4) according to the above virtual goal value and the above process variable, by one PID controller generating control output suitable to the above process.
Patent TW-324649-B (TW)
Title: Vertical rice-husking machine
Inventor: SATAKE SATORU
IPC: B02B3/06
Filed: 1996-04-06
Granted: 1998-01-11
Abstract: A grinding type vertical rice-husking machine, in which the main shaft, which vertically extends and rotates on the upright debran cylinder, is installed with: a helical roller for feeding grains, multiple grinding rollers located below the helical roller and separated from each other along the main shaft to grind the grains, a rotation roller located below the multiple grinding rollers to transport the ground grains to the grain removal section, such that the multiple grinding rollers are located in the debran cylinder, and the gaps defined by the adjacent grinding rollers form an air jet trench, the upper end of the debran cylinder communicates with the grain supply section and the lower end communicates with the grain removal section, in which the lower part of the debran cylinder extends downward to horizontally align the rotation roller; in which the external surface of the rotation roller is installed with agitation protrusions for agitation of the ground grains; in which the rotation roller comprises air jet holes so that, through the air jet holes, the air jets are blown on the ground grains agitated by the protrusions.
Patent TW-341692-B (TW)
Title: Program-controlled, coin-actuated recreating and game device
Inventor: HORST NIEDERLEIN
IPC: G07F17/34
Filed: 1996-07-22
Granted: 1998-10-01
Abstract: A program-controlled, coil-actuated recreating and game device, comprising: an enclosure; a display (4); a plurality of operating elements (6); a stereo amplifier (10) having related speakers (14); a system plate (16); a storage device (36)(38)(44) in which program information and data information are stored; which is characterized in that: for the data compression and/or decoding the MPEG-process is utilized.
Patent TW-324070-B (TW)
Title: Mask, mask production method, and electron beam exposure method and device
Inventor: SAKAKIBARA TAKAYUKI
IPC: H01L21/31
Filed: 1996-08-02
Granted: 1998-01-01
Abstract: A mask (120) with multiple blocks (1), in which each block comprises at least one void and the electron beam goes through one selected void of the at least one void in the blocks (1) and shoots point-blank on the wafer so as to form a pattern on the wafer, the mask (120) is characterized in comprising: a plate (120) capable of stopping the electron beam; and multiple micro-rectangular areas (4) used to form the pattern on the plate (120), in which each micro-rectangular area (4) comprises one of the multiple micro voids (3) formed by penetrating the plate (120), the void of one of the micro voids (3) has an area smaller than that corresponding to the micro-rectangular area (4), in which the total area of the micro voids (3) is smaller than the scheduled size.
Patent TW-311249-B (TW)
Title: Multi-layered tungsten depositions for contact hole filling
Inventor: HUANG YONG-SHENG
IPC: H01L21/44
Filed: 1996-11-21
Granted: 1997-07-21
Abstract: A process for filling small diameter contact holes, with tungsten, has been developed. This process consists of using two consecutive tungsten depositions. A first tungsten layer, that will exhibit a fast removal rate in a specific dry etch chemistry, such as RIE, is used to coat the sidewalls of the small diameter contact hole. Next a second layer of tungsten, that will exhibit a significantly slower removal rate then the first tungsten layer, is used to completely fill the contact hole. Etchback, to remove unwanted material from areas outside the contact hole, does not significantly attack the second tungsten fill, in the contact hole, thus not aggravating any seams in the second tungsten fill that may have been created during the LPCVD tungsten, contact hole fill process.
Patent TW-382629-B (TW)
Title: Process improvement in the synthesis of N-[3-(3-cyanopyrazolo[1,5-a] pyrimidin-7-yl)phenyl]-N-ethyl-acetamide
Inventor: PADMANATHAN THURAIRAJAH
IPC: A61P25/20
Filed: 1996-11-29
Granted: 2000-02-21
Abstract: The invention is a process improvement for producing N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethyl-acetamide which is useful as an anxiolytic, antiepileptic, sedative-hypnotic agent and skeletal muscle relaxant. The disclosed invention comprises reacting 3-dimethylamino-1-(3-N-ethyl-N-acetyl-aminophenyl)-2-propen-1-one or a suitable salt thereof with 3-aminopyrazole-4-carbonitrile or a suitable salt thereof in a mixture comprising water and acetic acid or a suitable salt thereof, rather than in acetic acid alone.