baber/WOPTO huggingface dataset:
Patent FI-74079-B (FI)
Inventor: SCHMIDT HEINRICH
IPC: B65B29/02
Filed: 1985-10-18
Granted: 1987-08-31
Abstract: A process for manufacturing articles of filter paper in which the wet strength of the regions of weak points resulting from mechanical working is increased by the application of a wet strengthener of cross-linked cationic polyalkylenimines. For this purpose, the wet strengthener is applied only to the regions of the weak points after the filter paper has been manufactured. Seams or edge reinforcements are formed by relief printing before the application of the wet strengthener and a heat treatment takes place after application of the thermoplastic wet strengthener to cause the wet strengthener to harden. The application of the wet strengthener is effected in measured doses so that the legally prescribed maximum amounts to be added are not exceeded.
Patent FI-90416-B (FI)
Inventor: SHUTSKE GREGORY MICHAEL
IPC: A61P25/28
Filed: 1988-02-11
Granted: 1993-10-29
Abstract: There are disclosed compounds having the formula <CHEM> wherein R is hydrogen, loweralkyl or loweralkylcarbonyl; R1 is hydrogen, loweralkyl, loweralkylcarbonyl, aryl, diloweralkylaminoloweralkyl, arylloweralkyl, diarylloweralkyl, oxygen-bridged arylloweralkyl or oxygen-bridged diarylloweralkyl; R2 and R3 are independently H or CH3; X is hydrogen, loweralkyl, cycloalkyl, loweralkoxy, halogen, hydroxy, nitro, trifluoromethyl, formyl, loweralkylcarbonyl, arylcarbonyl, -SH, loweralkylthio, -NHCOR4 or -NR5R6 where R4 is hydrogen or loweralkyl, and R5 and R6 are independently hydrogen, loweralkyl or cycloalkyl; Y and Z are independently a direct bond, CR7R8 or CR7R8-CR9R10; and P and Q are independently CR7'R8', CR7'R8'-CR9'R10' or CR7'R8'-CR9'R10'-CR11R12, where each of R7 through R12 and R7' through R10' is independently H or CH3; stereo, optical and geometrical isomers thereof, and pharmaceutically acceptable acid addition salts thereof, which are useful for enhancing memory.
Patent FI-90837-B (FI)
Inventor: LEHMLER HANS-FRIEDRICH
IPC: B23K37/04
Filed: 1988-12-12
Granted: 1993-12-31
Abstract: The invention relates to a method for supporting beams which are laid on displaceable disc-shaped supporting rollers (17, 18) of a longitudinal conveyor. 
<??>In order to permit positionally stable support when conveying the various profile cross-sections and dimensions on a single longitudinal conveyor, the work pieces, which are in the form of U, I, L, T or bulb profiles are placed with their web faces (31) on the disc-shaped supporting rollers (17, 18) and their flanges (28) or bulbs facing downwards towards the disc-shaped supporting rollers (17, 18) and their flanges (28) are placed against abutment elements (24) arranged fixed perpendicularly to the bearing face of the disc-shaped supporting rollers (17, 18) in the direction of longitudinal conveyance. 
<IMAGE>
Patent FI-108246-B (FI)
Inventor: THEURER JOSEF
IPC: E01B27/13
Filed: 1994-03-16
Granted: 2001-12-14
Abstract: A tamping machine (1) for the compaction of a railway (2) ballast consists of a machine frame (4), supported on rail running gear, and of a stabilisation assembly (9) connected to said machine frame so as to be adjustable in height. Said stabilisation assembly can be caused to oscillate horizontally as well as vertically with respect to the machine longitudinal direction by means of vibrators (15) and is designed to be able to travel on tracks via flanged rollers (11). The mutual distance of the flanged rollers (11) perpendicularly to the machine longitudinal direction can be varied by means of a spreading drive (13). The latter is designed as a multi-position cylinder comprising a first and a second cylinder tube (22, 23) arranged one behind the other in the axial direction and having respectively a first and a second, double-acting piston rod (24, 25). The latter is connected in an articulated fashion to an adjoining axle (26) of one of the flanged rollers (11) located opposite one another with respect to the axial direction. <IMAGE>
Patent FI-111272-B (FI)
Inventor: HECKENMUELLER HARALD
IPC: C12Q1/58
Filed: 1995-06-06
Granted: 2003-06-30
Abstract: PCT No. PCT/DE93/01085 Sec. 371 Date Jun. 1, 1995 Sec. 102(e) Date Jun. 1, 1995 PCT Filed Nov. 12, 1993 PCT Pub. No. WO94/13830 PCT Pub. Date Jun. 23, 1994A device for carrying out urease tests for combined antrum/corpus biopsies to diagnose gastro-intestinal illnesses has a carrier plate, a schematic representation of the stomach on the plate, at least one opening in the plate at the locations corresponding to the corpus and the antrum in the schematic representation of the stomach, an evaluation scale for assessment of the urease test and an area for data on the patient and for clinical data.
Patent FI-108783-B (FI)
Inventor: KARDYS GARY J
IPC: B24D3/00
Filed: 1997-03-20
Granted: 2002-03-28
Abstract: Composite abrasive wheels having shaped abrasive grits bonded to a fibrous substrate are more effective than their counterparts with irregularly shaped grain, especially at finer grit sizes.
Patent HU-191355-B (HU)
Inventor: GAAL JANOS
IPC: A61B17/74
Filed: 1982-04-07
Abstract: A találmány szerinti stabilizációs csontszeg szegteste nyílásokkal van ellátva és állítható hosszúságú, továbbá felső végén olyan stabilizációs fej van, amely rögzítőfuratokkal, illetve hornyokkal van ellátva. Az egyik változat szerint a szegtest combnyakszeg (2), amelyre a rögzítendő csontra felfekvő stabilizációs fej (1) illeszkedik, a stabilizációs fej (1) rögzítőfuratai (14) pedig a stabilizációs fej (1) síkjával szöget bezáróan vannak kiképezve. A csontszeg behelyezésére, illetve kivételére szolgáló készüléknek kúpos (33) menetes orsója (35), valamint előnyösen tölcsérszerű végződésű hüvelye és a visszahúzást biztosító anyája (34) van, a menetes orsó (35) vége (37) pedig tengely (39) menetébe (40) kapcsolódó menettel van ellátva. Egy másik változatnál a szegtest hosszirányára és egymásra merőleges furatokkal ellátott üreges velőűrszeg (46), amelyhez a stabilizációs fej (41) differenciálcsavarral van csatlakoztatva, ahol a stabilizációs fej (51) rögzítőhornyai (43) a paláston érintőirányban vannak kialakítva. A velőűrszeg beütésére, kihúzására és hosszának beállítására szolgáló készülék szögbeütő orsójában (80) a velőűrszeg (46) összekötő orsójához (51) kulcsnyílásába (54) illő T-kulcs (87) van. A készülékkel történő beültetés-  -1-
Patent HU-192008-B (HU)
Title: Device for uniflow or counterflow mixing fluids and gases
Inventor: BIRO TAMAS
IPC: B01F25/64
Filed: 1984-04-19
Abstract: Appts. comprises a drive unit, shaft extending into the liquid and pump impellers attached to the shaft. The shaft is surrounded by an inner suction tube. The suction side of one of the impellers is fitted near one end of the inner suction tube. The other end of this tube is in contact with the medium which is to be mixed in. The inner suction tube is located inside an outer suction tube. - The suction side of the second pump impeller is fitted near one end of the outer suction tube, the same end as that of the inner suction tube which is fitted with a pump impeller. The other end of the outer suction tube is in contact with the liquid surrounding it.
Patent HU-196342-B (HU)
Inventor: PETOE LAJOS
IPC: C02F1/46
Filed: 1986-04-21
Abstract: A szilárd szemcsés hordozóanyag, például zeolit
felületén lúgos kémhatású anyaggal alumíniumsót,
célszerűen AI2(SO4)3-t reagáltatnak. Ezáltal a szemcsék
felületén alumínium-oxid és aJumínium-hidroxid
által alkotott réteg alakul ki, amely elektromosan polarizált.
E réteg az egymást taszító kolloid részecskék
elektromos töltésének elvesztését, ezáltal azok aggregációját
(koagulálódását) idézi elő, ami azután a mechanikus
szűrést lehetővé teszi.
Patent HU-191685-B (HU)
Title: Process for preparung spiro-imidazolidine-indoline derivatives
Inventor: BRITTAIN DAVID R
IPC: A61P3/10
Filed: 1984-05-04
Abstract: The invention concerns 1'-(4-bromo -2-fluorobenryl)-7'-chloro-spiro [imidazolidine -4,3'- indoline] -2,2',5- trione in racemic or dextrorotatory form; pharmaceutical compositions thereof for use in the treatment or prophylaxis of certain complications of diabetes;and processes for its manufacture.
Patent HU-207655-B (HU)
Title: Process for producing pharmaceutical compositions containing purpuromycin as active component
Inventor: PARENTI FRANCESCO
IPC: A61P31/04
Filed: 1990-03-29
Abstract: Use of the antibiotic purpuromycin for the topical treatment of infectious vaginitis and topical dosage forms containing said product. The antibiotic purpuromycin is simultaneously active against the main causative agents of infectious vaginitis i.e.: Candida vaginalis, Trichomonas vaginalis and Gardnerella vaginalis.
Patent HU-192986-B (HU)
Inventor: REITER JOZSEF
IPC: C07D233/50
Filed: 1984-05-23
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Imidazolidinderivaten der allgemeinen Formel I, worin n 0, 1, 2, 3 oder 4 bedeutet und R fuer gegebenenfalls durch ein oder mehrere Halogenatom(e) substituiertes niederes Alkyl, Halogen, Nitro, di-(Nieder-Alkyl)-amino, Carboxamido oder niederes Alkylamino steht (Einschraenkung 1: wenn n 2 und ein R 3-Fluor, das andere R nicht 4-Methyl; Einschraenkung 2: wenn n 2 und ein R 4-Fluor, das andere R nicht 3-Methyl, 3-Nitro oder 3-Chlor). Es werden mehrere Verfahrensvarianten angegeben. Beispielsweise wird 2-Methyl-4-chlor-phenyliminodithiokohlensaeuredimethylester mit Aethylendiamin zu 2-(2-Methyl-4-chlor-phenylimino)-imidazolidin umgesetzt. Das Verfahren ist mit leicht zugaenglichen Ausgangsstoffen auch grosstechnisch leicht durchfuehrbar. Das Verfahren umfasst auch die Herstellung von pharmazeutisch geeigneten Saeureadditionssalzen der Verbindungen der Formel I, insbesondere der Fumarate. Formel I
Patent HU-193606-B (HU)
Title: Process for preparing a tetradekapeptide in high purity as substrate of renin
Inventor: TOTH GABOR
Filed: 1985-07-01
Abstract: Renin. substrate-tetra:deca:peptide of approximately 99% purity and formula - L-ASP-L-ARG-L-VAL-L-TYR- L-ILE-L-HIS-L-PRO-L-PHE-L-HIS- L-LEU-L-LEU-L-VAL-L-TYR-L-SER (I) - is prepd. from crude renin-substrate by reverse phase HPLC using an eluent contg. 65-80 vol.% aq. acid or buffered soln. at pH 2-2.5 and 20-35 vol.% aceto-nitrile. The remin substrate-tetra:deha:peptide is isolated from the eluate and opt. freed from salt.
Patent HU-199348-B (HU)
Title: Process for producing lipophyl bentonite
Inventor: SZANTO FERENC
IPC: C01B33/26
Filed: 1983-08-29
Abstract: Bentonite is made lipophilic by adding to aq. bentonite suspensions strictly in the given sequence first based on the mass of bentonite in the suspension 1-5wt.% anionic surfactant, setting the pH of the mixt. to 4.8-5.2, then adding 20-60wt.%, based on bentonite, cationic surfactant, leaving the mixt. to rest, filtering the ppte., washing, drying and comminuting the prod. - As anionic surfactants are used, e.g. the alkali salts of oil-acids, or sulphonated prods. with 10-20C in the alkyl chain, pref. sodium-oleate or sodium-dodecyl-sulphate, - as cationic surfactants one or more prim., sec., tert. or quat. onium or inium salts with more than 12C in the alkyl chain, pref. hexadecyl-pyridinium-chloride, hexadecyl-trimethyl-ammonium -chloride or di-hexadecyl-dimethyl-ammo nium -chloride.
Patent HU-188385-B (HU)
Inventor: BOLDOGHY BELA
IPC: E02D27/32
Filed: 1983-11-08
Abstract: A találmány földbe süllyesztett technológiai alagúttal (3) rendelkező építményekhez, különösen ömleszthető anyagok tárolására szolgáló silókhoz (8) előirányzott vasbeton szerkezetű alépítményekre vonatkozik. A felmenő építmény fenéklemezét is alkotó - célszerűen változó szélességű - fejlemezből (1), az alatt húzódó talplemezböl (4), valamint az e lemezeket (1,4) összekötő, és azokkal a technológiai alagutat (3) is határoló gerincfalakból (3a), továbbá ezekre merőleges, a talplemeztől (4) kiinduló és a fejlemezt (1) alátámasztó keresztirányú diafragma falakból (5a-5c) áll az alépítmény. A alépítmény szerkezetrészei merev kapcsolatokkal csatlakoznak egymáshoz, és együttesen nagy merevségű szekrénytartó szerkezetet alkotnak (2. ábra).  -1-
Patent HU-214002-B (HU)
Inventor: LIPSCHER ERVIN
IPC: A61B5/00
Filed: 1990-06-19
Abstract: A találmány szerinti reflexkalapácsnak markőlata (1) ésütőfelülete (2) van, ahől az ütőfelület (2) a markőlathőz (1)meghatárőzőtt viszőnylagős elmőzdűlást engedő hősszirányú megvzetéssel (17) kapcsőlódik, tővábbá előfeszítő eszközzel vankapcsőlatban, amely adőtt esetben előfeszítő rűgóval (4) rendelkezik,és meghatárőzőtt előfeszített állapőtban reteszelhető. A reteszelés ődására a találmány szerinti eszköz előnyösen őlyan működtetőszerkezettel rendelkezik, amely lényeges erőkifejtés és elmőzdűlásnélkül, egyszerűen kezelhető. ŕ
Patent HU-190194-B (HU)
Inventor: CSOBO LASZLO
IPC: B21F23/00
Filed: 1983-11-30
Abstract: A találmány tárgya huzaltoló hajtómű alumínium huzal adagolására, továbbítógörgőkkel és rugós leszoritóval. A továbbítógörgők nyolc hajtott görgőt (3, 4, 5, 6, 7, 8, 9, 10) tartalmaznak, ahol a felső görgők (7,8,9,10) két egymással szembenéző lekerekített végű himbán (13,14) keresztül vannak rugóval (17) megtámasztva nyomógyűrű (15) segítségévei a huzalra szorítva.  1. ábra -1-
Patent IT-1145521-B (IT)
Inventor: BENUZZI GINO
IPC: B27G19/10
Filed: 1981-10-20
Granted: 1986-11-05
Abstract: In a sawing machine for cutting panels (P) and the like, of the type in which said panels (P) are supported on a horizontal supporting table (A) and a main circular saw (S) mounted on a movable carriage (C) effects the cutting in a vertical plane and moves across said supporting table (A) along a horizontal cutting line, there is provided a grooving device for making a groove or incision in the edge of said panels (P) at the line of exit of said circular saw (S) out of said panels (P). The grooving device comprises a rotary grooving tool (30) mounted on the same carriage (C) carrying the main circular saw (S). The rotary grooving tool (30) is mounted on a movable side (12) of an articulated parallelogram structure (1,13,11,12 - 9,10,14,15) mounted on the carriage (C) by means of another side (1) rigidly secured thereto. An air-operated jack (17) is provided for moving the said articulated parallelogram structure from a rest position in which the grooving tool (30) is inactive, to a working position in which the grooving tool (30) engages the panels (P), and vice versa.
Patent IT-1233742-B (IT)
Title: Product compounded by soap of monoglycerides, triglycerides, and glycerol fatty acids, to be used as calorie source in ruminant, swine, bird and rabbit feeding, as well as quality enhancer for bird and swine carcass. Process to realise said product.
Inventor: FERNANDO CANTINI
IPC: A23K/
Filed: 1989-09-05
Granted: 1992-04-14
Abstract: The present product contains: 2 to 5% wetness, 70 to 80% saturated and unsaturated monocarboxylic fatty acids C8 - C10 - C12 - C14 - C16 - C18 - C20 - C22 combined with calcium. 3 to 15% of monoglycerides of saturated and unsaturated monocarboxylic fatty acids C8 - C10 - C12 - C14 - C16 - C18 - C20 - C22; 2 to 15% free saturated and unsaturated monocarboxylic fatty acids C8 - C10 - C12 - C14 - C16 - C18 - C20 - C22, combined with glycerol; 2% to 7% of glycerol.
Patent LV-14315-B (LV)
Title: Single-phase loaded bridge rectifier
Inventor: RAŅĶIS Ivars
IPC: H02M1/14
Filed: 2011-02-08
Abstract: The invention relates to electrical engineering and can be used in power electronics. Its aim is to improve the quality of DC voltage in the output of loaded single-phase rectifier. Main single-phase loaded bridge rectifier is supplied from one half-winding of secondary center tap winding of transformer, but to the other half-winding there are connected the diodes-capacitors voltage doubler and auxiliary single-phase rectifier with capacitor at output, which represent a reference voltage. Positive pole output of the doubler is connected to collector of n-p-n transistor, its emitter is connected to positive output clamp of the main rectifier, a base of transistor is connected to positive output clamp of auxiliary rectifier, but negative poles of the main and reference rectifiers and voltage doubler output are consolidate as ground point.
Patent LV-12368-B (LV)
Title: Method for producing pourable methionine salt based animal food supplement and the granulate thus obtained
Inventor: BINDER WOLFRAM
IPC: A23K20/142
Filed: 1999-08-31
Abstract: The invention relates to a method for producing a pourable, methionine salt based animal food supplement which is easy to handle, wherein a granulated product is manufactured from a methionine salt solution which can be obtained according to traditional methods. The invention further relates to methioninate granulated products that are thus obtained.
Patent MX-169456-B (MX)
Title: Composicion liquida, lubricante y funcional que contiene fosforo y azufre
Inventor: BIASE STEPHEN A DI
IPC: C10N10/02
Filed: 1987-06-09
Abstract: La presente invención se refiere a una composición de fluído funcional o lubricante que comprende una cantidad mayoritaria de por lo menos un aceite de viscosidad lubricante y una cantidad minoritaria de A) como mínimo una sal de amina o metálica de por lo menos un ácido monotiofosfórico de fórmulas: I y II o sus mezclas donde R1 y R2 son cada uno independientemente grupos hidrocarbilo, X es un metal o un grupo amonio, cuando X es un metal, n es un entero igual a la valencia del emtal, y cuando X es un grupo amonio, n   1, y B) al menos una comosición que contiene nitrógeno, soluble, preparada por reacción de un compuesto productor de ácido succínico sustituído con hidrocarburos por lo menos con medio equivalente, por equivalente de compuesto productor de ácido, de una amina que contiene por lo menos un hidrógeno unido a un átomo de nitrógeno.
Patent MX-166672-B (MX)
Title: Sistema de seguridad para articulos
Inventor: WOLF ALBERT E
IPC: G08B13/24
Filed: 1987-07-17
Abstract: La presente invención se refiere a un sistema de comprobación para instalaciones que tienen un área interior que aloja artículos protegidos para que no sean sacados de las instalaciones sin autorizaqción, teniendo dichos artículos fijadas a ellos etiquetas de seguridad que son detectables por un sistema electrónicode seguridad que son detectables por un sistema electrónico de supervisión de artículos, estando provistas las instalaciones de una pluralidad de pasillo de comprobación para dichos artículos, teniendo cada pasillo un extremo que mira hacia el área interior y un extremo opuesto que mira hacia un pasaje común que conecta todos los opuestos entre sí y con una salida desde las instalaciones, la mejora caracterizada porque comprende; medios para impedir que las personas que desean retirar artículos de dichas instalaciones a través de los pasillos de comprobación, acompañen a dichos artículos a través de los pasillos hasta sus extremos opuestos, por lo menos una trayectoria separada, para detectar etiquetas de seguridad que se hagan pasar a través de la trayectoria separada.
Patent MX-168603-B (MX)
Title: Procedimiento para la determinacion de la presencia de sustancias importantes para la diagnosis, en particular anticuerpos o antigenos segun el metodo elisa mediante evaluacion fotometrica
Inventor: DOPATKA HANS-DETLEF
IPC: G01N33/576
Filed: 1987-10-23
Abstract: La presente invención se refiere a procedimiento para la determinación en líquidos de ensayo de la prsencia de sustancias importantes para la diagnosis, en particular anticuerpos o antígenos, preferentemente según el método ELISA, mediante evaluación fotométrica de las muestras preparadas a partir de los líquidos de ensayo con complejos de antígeno/anticuerpo teñidos y marcados con enzimas, en el que se prepara sólo una única dilución de ensayo de la muestra, en esta dilución de ensayo se desencadena una reacción de fijación de antígeno/anticuerpo, estando fijado preferentemente un participante en la reacción a una superficie sólida, y siendo sometido al complejo de antígeno/anticuerpo a una reacción de coloración afectuada por vía enzimática, con el fin de preparar una solución de coloración y apartir de la extinción   medida en esta solción de coloración, utilizando datos de referencia previamente medidos, se determina un titulo correspondiente al título de dilución final caracterizado por que se mide la extinción de la solución de coloración y apartir de la señal   ADO obtenida sedetermina analiticamente el titulo segun la formula: log título   alfa . A(beta,DO) el cual se equipra con el titulo de diluvión final obtenible mediante series de diluciones siendo el titulo en la formula el valor reciproco de la dilución final en la que la señal ADO corresponde a la señal de valor limite en el limite de detección frente a muestar testigo negativas y se deteminan los valores para alfa y beta con una dilución de ensallo establecida para la pertinente conbinación de superficie inmunológicamente reactiva e inmunoglobulina o anti geno marcado con enzimas como detectos, en las mismas condiciones de reacción y de fijación, de manera experimental por separado mediante series de diluciones de muestras con titulo de dilución final conocido del analito.
Patent NO-137769-B (NO)
Title: Fremgangsm}te til fremstilling av proteinkonsentrat av fisker}stoff
Inventor: OPSTVEDT JOHANNES
IPC: A23K10/22
Filed: 1975-07-14
Abstract: Fremgangsmåte til fremstilling av proteinkonsentrat av fiskeråstoff.
Patent NO-158939-B (NO)
Inventor: ROTH MICHAEL
IPC: C04B24/42
Filed: 1981-11-27
Abstract: This invention relates to a process for preparing structural components which comprises preparing a slurry containing a hydraulic binding agent, water, additives and an organo(poly)siloxane of the general formula   <IMAGE>   where at least 10 percent of the number of R radicals are the same or different alkyl radicals having at least 4 carbon atoms per radical and the other radicals when present are alkyl radicals having from 1 to 3 carbon atoms per radical and/or phenyl radicals, R' represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, x is 0, 1, 2 or 3, with an average of from 0.9 to 1.8, y is 0, 1, 2 or 3, with an average of 0.01 to 2.0 and z is 0, 1, 2 or 3, with an average of from 0.00 to 0.5, with the proviso that the sum of x+y+z may not exceed 3.5, molding the slurry and thereafter exposing the molded slurry to aqueous steam.
Patent NO-167086-B (NO)
Inventor: CHANDRARATNA ROSANTHA A S
IPC: A61K31/07
Filed: 1987-09-21
Abstract: Retinoid-like activity is exhibited by compounds of the formula <CHEM> where n is 0-5 and A is H, lower alkyl, or -COOH or ester or amide thereof, -CH2OH or an ether or ester derivative, or -CHO or an acetal derivative, or a pharmaceutically acceptable salt.
Patent NO-173043-B (NO)
Title: Anti-denatureringsmiddel for tilsetning til et spiselig posteiprodukt.
Inventor: TAKASAKI TAKASHI
IPC: A23L13/40
Filed: 1988-07-19
Abstract: Anti-denatureringsmiddel for et spiselig posteiprodukt som inneholder som vesentlige aktive bestanddeler, et nedbrytningsekstrakt fra protein erholdt ved nedbrytning av protein med proteinase, og saccharider.
Patent NO-173677-B (NO)
Inventor: THOENNESSEN GUENTER
IPC: H01Q13/20
Filed: 1989-12-29
Abstract: An apparatus for transmitting high-frequency signals with a coaxial cable provided with apertures in the outer conductor, where the apertures recur, seen in the longitudinal direction of the cable, in groups with a period length which is selected so that the groups of apertures radiate high-frequency signals from a desired lower limit frequency f0 and that the pole positions which are allocated to the multiples of the lower limit frequency f0 are eliminated or at least substantially attenuated in the frequency response of the coupling attenuation, is designed so that the number of apertures per period is greater than 30, the apertures are slits (1) which are as narrow as possible and the slits (1) are disposed essentially perpendicular in relation to the cable axis.