baber/WOPTO huggingface dataset:
Patent FI-82804-B (FI)
Title: Device for the removal or widening of constrictions in vessels carrying body fluids
Inventor: WEIKL ANDREAS
IPC: A61M/
Filed: 1983-06-23
Granted: 1991-01-15
Abstract: An apparatus and method for comminuting and/or eliminating constricted areas in vessels of all types whereby fissures and cracks in the vessel walls during the treatment of stenosis in blood vessels and also coronary obstruction are to be avoided. A treatment catheter is used which is equipped with two inflatable balloons which seal off a constriction place in a vessel on both sides thereof whereby the degree of expansion of both balloons is externally regulatable. An inlet member for the supply of means dissolving the material of the constriction area or comminuting the same into smaller particles and an outlet member for the removal of the dissolved or comminuted material of the constriction place are provided in the walls of the treatment catheter within the area delimited by the two balloons. These inlet and outlet members are in communication with a channel accessible from the outside.
Patent FI-82456-B (FI)
Inventor: JONES STUART DONALD
IPC: C07D285/18
Filed: 1985-04-01
Granted: 1990-11-30
Abstract: Novel 1,2,4-thiadiazines of the formula    <IMAGE>  I  wherein R3 is selected from the group consisting of hydrogen, -OH, -CF3, alkyl, alkoxy and alkylthio of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms optionally substituted with alkyl of 1 to 6 carbon atoms and   <IMAGE>  R1 and R2 are individually selected from the group consisting of hydrogen and alkyl of 1 to 3 carbon atoms or taken together with the nitrogen to which they are attached form a saturated heterocycle of 4 to 8 carbon atoms optionally containing a heteroatom of the group consisting of -O-, -S- and   <IMAGE>  and R' is hydrogen or alkyl of 1 to 3 carbon atoms, R5 is   <IMAGE>  R4 is selected from the group consisting of hydrogen, halogen and alkyl and alkoxy of 1 to 3 carbon atoms, R6 is selected from the group consisting of hydrogen, halogen and alkyl of 1 to 3 carbon atoms with the proviso that R6 may represent halogen only when R3 is hydrogen, -OH, alkyl and alkoxy of 1 to 6 carbon atoms or cycloalkyl of 3 to 6 carbon atoms optionally substituted with alkyl of 1 to 6 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts having a remarkable anxiolytic activity and novel intermediates.
Patent FI-85583-B (FI)
Inventor: BEELEY NIGEL
IPC: C07C323/39
Filed: 1987-07-07
Granted: 1992-01-31
Abstract: A compound which is a carbamate or urea derivative of general formula (I)    <IMAGE>  (I)  wherein X is hydrogen, halogen or methylthio, Y is oxygen or   <IMAGE>  R is C1-C4 alkyl, R1 is hydrogen, one or two halogen atoms or trifluoromethyl groups, a methyl group, a methyl group, a cyano group, a nitro group, a methoxycarbonyl group, a methylenedioxy group linked to two adjacent carbon atoms of the benzene ring to which it is attached, or a fused benzo group forming an  alpha -naphthyl or  beta -naphthyl group with the benzene ring to which it is attached, R2 is a linear or branched C1-C8 alkyl or alkenyl group optionally substituted with halogen atoms or a methoxy group, a cyclopropylmethyl group, or a phenyl group optionally substituted with one or two halogen atoms or methyl groups, n is 1 or 2, and m is 2 or 3, or an addition salt thereof with a pharmacologically acceptable acid is pharmacologically active as a calcium antagonist.
Patent FI-88394-B (FI)
Inventor: NEEF GUENTER
IPC: C07J71/00
Filed: 1987-09-01
Granted: 1993-01-29
Abstract: 13alpha-alkylgonan-delta9(11)-5,10 epoxides of the formula   <IMAGE> in which R is a hydrogen, methyl or ethyl and Z is a ketal or thioketal group effective as a keto-blocking group, are provided by a process wherein a compound of the formula   <IMAGE>   in which R and Z are as defined above, is irradiated with active ultraviolet radiation.
Patent FI-93142-B (FI)
Inventor: GAMMELGAARD KRESTEN
IPC: F16L55/26
Filed: 1991-10-25
Granted: 1994-11-15
Abstract: PCT No. PCT/DK90/00109 Sec. 371 Date Oct. 28, 1991 Sec. 102(e) Date Oct. 28, 1991 PCT Filed Apr. 26, 1990 PCT Pub. No. WO90/12979 PCT Pub. Date Nov. 1, 1990.An apparatus for use in renovating tube systems, in particular, sewer tubes of a circular cross section. The apparatus includes a frame on wheel, with the frame being arranged so as to be moved inside a tube in such a manner that a position of the apparatus in the tube is determined. A motor-driven tool is arranged for cutting away items extending or protruding into the tube and/or for forming side openings in the tube wall or in a tube lining. The motor driven tool is mounted on a carrier arm extending beyond an end part of a rotatable portion of the apparatus. The carrier arm is pivotally connected, opposite the tool, to the rotatable portion at a distance from the end part thereof. An inflatable lifting member is arranged inside the rotatable portion between the end part of the rotatable portion and the pivot axis of the carrier arm. The lifting member is interposed between the rotatable portion and the carrier arm in such a manner that the tool can be moved diametrically within the tube. A turning motor is interposed between the frame and the rotatable portion.
Patent FI-109191-B (FI)
Inventor: MILLER ROBERT E
IPC: B41M5/382
Filed: 1993-09-08
Granted: 2002-06-14
Abstract: A record material comprises a substrate bearing microcapsules having nonmeltable walls. The microcapsules contain a chromogen or developer and a photosensitive composition which undergoes a change in viscosity upon exposure to actinic radiation. The walls of the microcapsules have an elongation of not more than 1%, and the record material is resistant to heat, measured by not producing any substantial color when placed in a 150 DEG C oven for one minute. Surprisingly, the record material however is capable of forming a color upon application to the record material of a point source energy input comprising a  DELTA  T of at least 115 DEG C per one millisecond. The record material can be desensitized, i.e. made not susceptible to further imaging, by exposure to actinic radiation.
Patent FI-102890-B (FI)
Inventor: SCHOENER PETER
IPC: B09B3/00
Filed: 1994-02-09
Granted: 1999-03-15
Abstract: Glass and metal are recovered separately from the solid residues produced in a refuse incineration plant, in particular from slag, by melting. The melting is carried out in two zones. In the first, upper melting zone, the oxidic constituents of the residues are converted into a glass melt. In the second, lower melting zone, the metallic constituents of the residues are converted into a metal melt at elevated temperature. The two melts are isolated separately.
Patent FI-111140-B (FI)
Inventor: PAPRITZ STEPHAN
IPC: B41F33/00
Filed: 1995-01-30
Granted: 2003-06-13
Abstract: The measurement fields are optically scannable and are printed on a print prodn. to be controlled or on a standard print. A first combination measurement field (1) is involves in which the basic colours, in partic. the three colours cyan, magenta and yellow, are printed one on top of the other with their nominal surface covering degrees (Fct,Fml,Fgl). Additional individual colour raster fields (8,9,10) in the basic colours in their basic colours have a surface covering degree which corresponds to the same colours in the first combination measurement field. The measurement field group contains additional combination measurement fields (2,3,4) in which the basic colours with varied nominal surface print degrees are printed one on top of the other, whereby each basic colour at least once is varied and in each additional combination measurement field at least another basic colour is varied.
Patent FI-111703-B (FI)
Inventor: JOERGENSEN-BECK FRODE
IPC: B65D6/40
Filed: 1995-05-03
Granted: 2003-09-15
Abstract: PCT No. PCT/DK93/00359 Sec. 371 Date Aug. 7, 1995 Sec. 102(e) Date Aug. 7, 1995 PCT Filed Nov. 4, 1993 PCT Pub. No. WO94/10048 PCT Pub. Date May 11, 1994A box is disclosed having a pivot lid and a skirt. The skirt has an internal edge cooperating in a snap locking manner with a folded-over flap at the front edge area of the box mouth. This flap protrudes from an edge area which, as a whole, is resiliently depressible into the box, whereby a snap locking is achieved which will be substantially independent of the manufacturing tolerances of the box. The locking and, in particular, the release of the locking by the opening of the lid will take place in a manner that is very convenient for the user, because the spring action after the release of the locking will contribute to the opening of the lid.
Patent HU-203598-B (HU)
Title: Method and apparatus for integral optical testing deletorius stresses in bottom of the glassware, in particular bottles and hollow ware
Inventor: DOBI IMRE
IPC: G01N21/23
Filed: 1986-03-10
Abstract: The invention relates to a process for the integral optical examination of damaging mechanical stresses arising in the bottom-part of bottles and hollow glasswares. In accordance with the process the bottom-part of the glasses/bottles/is illuminated with a light bundle from the mouth, the cross-sectional intensity distribution is controlled by the aid of a light bundle with predetermined angle of aperture, with the integral optical system the bottom is illuminated with a light with quasi-homogeneous intensity. The passing light is modulated and led into the photodetector, the signal of which is analysed through a band-filter. The invention includes the apparatus for the implement of the process according to the invention. The apparatus has a laser (1), a laser bundle (2) emitted therefrom, a polar filter (3), connected with a light-chopper (4), a bundle stretcher consisting of the collecting lenses (5,6), the diaphragm (8), a polar filter (14) and the photodetector (15).
Patent HU-199381-B (HU)
Title: Process for producing aldehydes
Inventor: BAHRMANN HELMUT
IPC: C07B61/00
Filed: 1985-03-27
Abstract: In the prodn. of aldehydes by reacting olefins with CO and H2 in the liquid phase in the presence of water and water-soluble Rh-phosphine complex cpds. (I) at 20-150 deg.C and 1-200 bar (100- 20 x 10 power 3 kPa), (I) contg. trisulphonated or tricarboxylated triarylphosphones (II) are used as catalyst and the reaction medium contains a solvent promoter (III). Pref. (II) is of the formula P(Ar1(X1M)(Y1n1))(Ar2(X2M)(Y2n2)) (Ar3(X3M)(Y3n3))(IIA): Ar1, Ar2 and Ar3 = phenyl or naphthyl gps.; esp. phenyl; Y1, Y2 and Y3 = linear or branched 1-4C alkyl, alkoxy, halogen, OH, CN, NO2 or R1R2N- gps.; R1 and R2 = linear or branched 1-4C alkyl; X1, X2 and X3 = a carboxylate (COO-) and/or sulphonate (SO3-) gp.; esp. a sulphonate gp.; n1, n2 and n3 independently = 0-5; M = an alkali alkaline metal, Zn, NH4 or quat. ammonium of the formula N(R3R4R5R6)+; R3, R4, R5 and R6 = linear or branched 1-4C alkyl.
Patent HU-205652-B (HU)
Inventor: FORRAI GYOERGY
IPC: F24C15/34
Filed: 1989-03-31
Abstract: A találmány tárgya zeolit-hőtárolós fűtőberendezés, a kinyerhető hőmennyiség, a hőkinyerés hatásfokának növelésére, amelynek tűztere és/vagy füstgázjárata/fustgázjáratai túlhő, ill. szerkezeti védelmet biztosító béléssel van ellátva. A találmány szerinti zeolit-hőtárolás fűtőberendezés újdonsága abban van, hogy bélésként a tűztér (4) és/vagy legalább az egyik füstgázjárat (7,8), valamint a tüzelőberendezés külső fala (1) közötti térben vagy önmagában egy 5-25 cm vastag zeolitréteget tartalma- zó zeolittartály (6) vagy pedig ezen utóbbihoz társított 1-5 cm vastag samottbélés van elhelyezve. A találmány szerinti zeolit-hőtárolós fűtőberendezés további újdonsága abban van, hogy a zeolittartálynak (6) felső része a szabad térbe vezető kivezetéssel (11) rendelkezik. Egy másik kiviteli alak esetében a zeolittartály (6) zárt kialakítású; és hogy alsó része szeleppel ellátott olyan kondenzációs tartályhoz csatlakozik, amelynek fala egy hulladékhő-vezeték falával együtt hőcserélőt alkot.  füstgáz ki l.ábra HU 205 652 B A leírás terjedelme: 8 oldal (ezenbelül 4 lap ábra)
Patent HU-200204-B (HU)
Inventor: BAUMGART ULRICH
IPC: C23C8/50
Filed: 1981-06-10
Abstract: Die Erfindung betrifft ein cyanid- und cyanatfreies Regenerierungsmittel zum Salzbadnitrieren zwecks Erzielung von Nitrierschichten bekannter Ausbildung auf Stahl- und Eisenwerkstoffen. Durch die Erfindung werden bei der Herstellung dieses Regenerierungsmittels Arbeitszeit sowie Energie- u. Materialkosten eingespart. Darueber hinaus werden durch d. umweltfreundl. Zusammensetzung die Bedingungen fuer die Lagerung, den Transport und den Einsatz wesentlich verbessert. Aufgabe der Erfindung ist es, ein Regenerierungsmittel zu finden, das als Nitriersalz dient und gleichzeitig eine Regenerierung bewirkt. Dies wird durch ein cyanid- und cyanatfreies Salzgemisch, bestehend aus 40 - 70 Gew.-% Dicyandiamid, 20 - 40 Gew.-% Harnstoff mit einem Zusatz von 10 - 30 Gew.-% Alkalikarbonat gewaehrleistet.
Patent HU-198404-B (HU)
Title: Method for simultaneous separating pyrite and chalcopyrite and molybdenite by dressing flotation
Inventor: ANTALIK BALINT
IPC: B03D1/00
Filed: 1985-05-24
Abstract: Ore is roughly broken into 10-20 mm pieces, and it is then finely ground for flotation in a water soln. of calcium chloride at a pH 9 with no other flotation agent present. After the sepn. of chalcopyrite and molybdenite the pyrite flotation is completed with the conventional flotation reagent.
Patent HU-186414-B (HU)
Title: Plant growth regulating compositions containing 1,3-dioxin-5-yl-alkyl-triazole derivatives and process for the preparation of the active ingredients
Inventor: PENTZEA COSTIN
IPC: C07D409/14
Filed: 1981-07-08
Abstract: Compounds of the formula    <IMAGE>  I  where Ar, R1, R2 and X have the meanings given in the claims, their preparation and their use as plant growth regulators.
Patent HU-205693-B (HU)
Inventor: SIMONNE DR KISS IBOLYA
IPC: A01G22/22
Filed: 1986-06-20
Abstract: A találmány tárgya agrotechnikai eljárás rizs termesz- tésére. Az eljárás során a talajelőkészítést, a vetést, majd az aratást és a betakarítás egyéb munkáit száraz körülmények között végezzük, a rizsterület öntözését elárasztásmentes, vízelvezetést nem igénylő, nagyüzemi módon, célszerűen esőztető öntözéssel biztosítjuk, rövid tenyészidejű, mélyreható gyökérzetű, hidegtűrő rizsfajtákat alkalmazunk, továbbá, hogy a növényvédőszerek és tápanyagok legalább egy részét az" öntözővízzel együtt juttatjuk a rizsterületre. HU 205 693 B A leírás terjedelme: 4 oldal
Patent HU-198512-B (HU)
Title: Process for producing peptide with anticoagulant effect and pharmaceutical composition comprising same
Inventor: KRSTENANSKY JOHN L
IPC: C07K1/02
Filed: 1988-05-20
Abstract: This invention relates to cyclic peptide derivatives of the general formula 1: <CHEM> which are useful anticoagulant agents.
Patent HU-196956-B (HU)
Title: Process for producing new leukotriene-antagonistic sulfide-, sulfoxide- and sulfon derivatives and pharmaceutical compositions containing them as active components
Inventor: BAKER STEPHEN R
IPC: C07D303/46
Filed: 1984-08-01
Abstract: There are described compounds of formula
     in which n is 0, or 2, R 1  is a hydrocarbyl group optionally substituted with an optionally substituted phenyl group and containing from 5 to 30 carbon atoms, R 2  is optionally substituted phenyl or C 1-10 alkyl optionally substituted by one or more substituents selected from optionally protected hydroxyl, optionally protected carboxyl, nitrile, optionally protected tetrazolyl, -COR 6  where R 6  is C 1-4 alkyl, C 1-4 alkoxy, an optionally protected amino acid residue or -NR 7   2  where each R 7  is hydrogen or C 1-4 alkyl, and -NHR 8  where R 8  is hydrogen, a protecting group, and optionally protected amino acid residue, C 1-4 alkyl or -COR 9  where R 9  is C 1-4 alkyl or C 1-4 alkoxy, and R 3 , R 4  and R 5  are each selected from hydrogen, carboxyl, C 2 . 5 alkoxycarbonyl, C 1-4 alkyl, C 1-4 alkoxy, hydroxyl, optionally protected tetrazolyl, halo, trifluoromethyl, nitrile, nitro and -CONR 10   2  where each R 10  is hydrogen or C 1-4 alkyl; and salts thereof. The compounds are leukotriene antagonists.
Patent HU-190149-B (HU)
Inventor: VLADAR TIBOR
IPC: F16K15/00
Filed: 1983-09-06
Abstract: A találmány szerinti visszacsapószelepnek beömlő és kiömlő nyílással bíró háza, ezen belül a közegáramlás irányában elmozdulni képes záró eleme van, amely teherviselő elemből (2) és rugalmas anyagból készült tömítőelemből (3) áll. A záróelem a szelepház (1) üregének belső felületén kiképzett, célszerűen kúpos zárási szelepülék (7) és a közdarab (4) felső oldalán kiképzett, ugyancsak kúpos felülettel bíró nyitási szelepülék (8) között úgy van elrendezve, hogy terheletlen állapotában a tömi tőelem (3) felső éle a zárási szelepüléket (7) érinti. A találmány szerinti visszacsapószelep egészen kicsi közegáramlásoknál is megbízhatóan alkalmazható, azon kívül a szerkezet nem tartalmaz nyomórugót, (gy anúak minden eleme a korróziónak jobban ellenálló anyagból - pl. műanyagból - készíthető. I  190149 -1-
Patent HU-192456-B (HU)
Title: Process for preparing l-lysine
Inventor: MEZHINJA GUNTARA R
IPC: C12P13/08
Filed: 1984-09-25
Abstract: Process comprises (a) irradiating the L-lysine producer with ionising radiation at 0.5-4.0 kRad/min. to a dose of 50 kRad; (b) cultivating the L-lysine producer in nutrient medium contg. N2 and C sources, mineral salts and growth stimulants, at 30-33 deg.C and pH 7-7.8 under aerobic conditions, and (c) isolating L-lysine from the nutrient medium. - The L-lysine producer is brevibacterium flarum RC-115 or brevibacterium Sp E-531.
Patent HU-193658-B (HU)
Title: Method for producing vermicelli
Inventor: GUOTH JANOS
IPC: A21D13/06
Filed: 1983-11-25
Abstract: The prods. are prepd. from coarse wheat flour by adding 2-10 wt% powdered vegetable lecithin, pref. 4 wt% sunflower lecithin or soybean lecithin, followed by 10-16 wt% cocoa powder and 0.15-0.2 wt% cinnamon. The mixt. is kneaded in the known way with hen eggs or quail eggs, stretched, cut and dried.
Patent HU-207369-B (HU)
Inventor: KADAR FERENC
IPC: E04G23/02
Filed: 1987-10-08
Abstract: A találmány tárgya eljárás födémek, főleg csökkent teherbírású poroszsüveg-, illetve salakbeton-födémek megerősítésére, amelynél a födém megerősítését monolit vasbetonlemezzel végezzük. A találmány lényege, hogy a megerősítendő födémben (2) először előre megválasztott helyeken áttöréseket (12) készítünk, ezekbe a készítendő vasbeton födémösszekötő tartók (5) vasalásait (7) beépítjük és azokat összekapcsoljuk a készítendő felső és alsó vasbetonlemez (4, 3) behelyezett és a megerősítendő födémhez (2) rögzített va- salásaival (6, 6’). A megerősítendő födém (2) alatt a készítendő alsó vasbetonlemez (3) tervezett vastagságának megfelelő távközzel alsó zsaluzatot (8) rendezünk el, továbbá előnyösen felülről történő kibetonozással a födémösszekötő vasbeton tartókból (5), a felső vasbetonlemezből (4), és az alsó vasbetonlemezből (3) a megerősítendő födémet (2) közrefogó monolit vasbeton teherhordó födémszerkezetet (11) hozunk létre.  10 2. ábra HU 207 369 B A leírás terjedelme: 8 oldal (ezen belül 3 lap ábra)
Patent HU-193306-B (HU)
Inventor: SZIN ANNA
IPC: B30B9/06
Filed: 1984-12-11
Abstract: A találmány tárgya elektromos asztalszerkezet virágok, növények víztelenítésére és préselésére, amely vázból (6), ahhoz erősített, alsó és felső hőszigetelt lapokból (5) áll, amelyek között egymás alatt rétegesen elrendezett —   felemelhető fűtőlap (1), —   posztóréteg (2), —   két réteg, célszerűen fehér, nedvszívó papír (3), —   második posztóréteg (2) és —   acéllap (4) van, ahol az acéllap (4) a rajta lévő posztórétegekkel (2) és papírokkal (3) együtt a vázból (6) kihúzható módon van kialakítva, (l.és 2. ábra).  2. óbra -1-
Patent HU-203082-B (HU)
Title: Process for producing condensed 4-aminopyridine derivatives
Inventor: DESAI MANOJ CHANDRASINHJI
IPC: C07D495/14
Filed: 1988-10-04
Abstract: Compounds of the formula
      wherein A, B, R¹ and R² are defined below. 
     The above compounds inhibit brain acetylcholine­sterase and are useful in the treatment of Alzheimer's disease.
Patent LV-13650-B (LV)
Title: Curd product
Inventor: ZORZOLIANI ELENE
Filed: 2006-02-28
Abstract: There is invented curd product containing ground seeds and additions of edible oil. It could be used such oils as ginger oil, pumpkin oil, dill-seed oil, anise-seed oil, carrot-, red clover-, linseed oil or their mixture with traditional edible oil in weight ratio 1 :3, combined with ground germinated grain and additions of mixtures from yoghurt or cream with cut herb. The mentioned product is characterized by high organoleptic quality, and for production thereof could be used raw materials being not fat. The final product has a several types accordingly their preferable dietary meaning.
Patent MX-169431-B (MX)
Title: Conjunto de deposito de agua para bebida de post-mezclado
Inventor: SEDAM JACSON K
IPC: G07F13/06
Filed: 1987-07-20
Abstract: La presente invención se refiere a un surtidor de bebida posmezclada, que comprede: (a) un elemento carbonatador para generar un suministro de agua carbonatada; (b) de un primer elemento de bomba que tiene una entrada y una salida para suministrar agua al elemento carbonatador, a una preción y regimen de flujo predeterminados; (c) un conjunto de depósito de agua manualmente rellenable; (d) un segundo dispositivo de bomba que tiene una entrada acoplada al depósito de y una salida a travez de la cual se bombea agua desde el depósito al segundo dipositivo de bomba, a la preción y rejimen de flujo predeterminados; y (e) un elemento de conducto para concentrar la entrada del primer elemento de bomba a la salida del segundo dispositivo de bomba; mediante lo cual el agua del depósito se bombea al elemento carbonatdor por medio del primero y segundo dispositivos de bomba.
Patent MX-169649-B (MX)
Title: Material compuesto para sonda divisible y procedimiento
Inventor: WELLS STANLEY C
IPC: A61M25/00
Filed: 1987-08-11
Abstract: La presente invención se refiere a un método para preparar un tubo polimérico con por lo menos una línea de debilitamiento longitudinal que se extiende a lo largo del mismo como un sitio para la división preferencial incluyendo lso siguientes pasos: extruir un tubo de un primer polímero con un diámetro interno y un diámetro externo que define un grueso de pared entre los mismo de un material primario que forma una sección transversal generalmente circular que tiene por lo menos un área a lo largo de la superficie de la misma de una dimensión menor en grueso radial, coextruir casi simultáneamente con la extrusión del tubo, un segundo polímero para llevar el área superficial y proporcionar una sección transversal circular relativamente uniforme para el tubo y la coextrusión, y seleccionar el primero y el segundo polímeros de manera tal que las superficies entre los mismos sean relativamente uniformes con adhesión relativamente leve.
Patent MX-165480-B (MX)
Inventor: SCATES MARK OWEN
IPC: B01J31/40
Filed: 1987-10-13
Abstract: A process for treating carbonylation catalyst solutions which contain a rhodium component and a lithium component to remove metallic corrosion products comprises contacting the catalyst solution with a cation exchange resin in the lithium form.
Patent NO-166908-B (NO)
Inventor: HAASS ADOLF
IPC: H04B3/23
Filed: 1985-03-26
Abstract: A circuit arrangement is provided for completely testing the operability of a data transmission facility which has a four-wire connected to a two-wire line via a hybrid and in which an echo compensation circuit is connected between the data signal output line and the data signal receiving line of the circuit arrangement. The data signals appearing on the data signal output line are supplied to the hybrid without delay as well as delayed by a fixed time interval which is selected to exceed the longest time leading to a correlation between delayed and undelayed data signals. The echo compensation circuit is driven only with the delayed data signals.