baber/WOPTO huggingface dataset:
Patent DK-157627-B (DK)
Inventor: STAUGAARD ARNE
IPC: F16L59/16
Filed: 1987-11-06
Abstract: Pipe insulation comprising a number of substantially identical, annular bodies (1) cut out in the shape of sheets from mineral wool, glass wool or similar fibre materials and having such a fibre structure that their compressibility is biggest in axial direction, said mineral wool bodies being put together around a common axis and wrapped in a resilient, crêpe-structured or pleated sheet material (2) glued to the mineral wool. In order to make possible the bending of the pipe insulation also in the case of the glue being hardened to such an extent that it has become hard and brittle, the glue is applied in the shape of essentially parallel rows (3) of glue points, the rows running substantially perpendicular to the axis of the insulation and forming between themselves an encircling band of glue-free sheet material.
Patent DK-163237-B (DK)
Inventor: TOTH EDIT
IPC: C07D233/60
Filed: 1983-12-27
Abstract: The invention relates to new aminopropanol derivatives of the formula (I)    <IMAGE>  (I)  wherein R1 is halogen, trihalomethyl, alkoxy having from one to 3 carbon atoms or alkyl having from one to 3 carbon atoms, R2 is alkyl having from one to 3 carbon atoms, and R3 is cycloalkyl having from 3 to 6 carbon atoms, or R2 and R3 together with the nitrogen they are attached to form an up to 8 membered ring optionally containing oxygen or a further nitrogen as an additional hetero atom, and optionally substituted with alkyl having from one to 4 carbon atoms or benzyl, and acid addition and quaternary ammonium salts thereof. According to another aspect of the invention there are provided processes for the preparation of these compounds. The new compounds are suitable for the treatment of acute ethanolic intoxication. Pharmaceutical compositions containing them are also within the scope of the invention.
Patent FI-62542-B (FI)
Inventor: SCHWEIGER RICHARD GEORG
IPC: C08F8/42
Filed: 1975-07-03
Granted: 1982-09-30
Abstract: 1521125 Cellulose nitrites, sulphates and nitrates R G SCHWEIGER 8 July 1975 [10 July 1974] 28676/75 Heading C3A Nitrite esters of cellulose which may be converted to sulphates or nitrates are prepared by reacting water-containing, cellulose having not more than 12% water content with dinitrogen tetroxide or nitrosyl chloride at less than 50‹ C. with stirring in the presence of at least three parts by weight of a swelling or solubilizing solvent for the nitrite ester per part by weight of cellulose in the presence of proton acceptor. The cellulose preferably contains 4-12% water by treatment with a highly polar aprotic solvent. The solvent used is N,N-dimethylformamide and the highly polar aprotic solvent may be N,N-dimethylformamide, N,N-dimethylacetamide or pyridine. The sulphate ester may be prepared by reacting the nitrile ester with SO3 or a complex thereof and neutralizing with a base to give the alkali salt form.
Patent FI-76336-B (FI)
Inventor: LESHER GEORGE YOHE
IPC: C07D239/42
Filed: 1983-10-31
Granted: 1988-06-30
Abstract: 2-Q-6-Q min -8-R-pyrido[2,3-d]pyrimidin-5(8H)-ones (I), where Q is 4 (or 3)-hydroxyphenyl, 4(or 3)-methoxyphenyl, 4 (or 3)-pyridinyl or 4(or 3)-pyridinyl having one or two lower-alkyl substituents, R min  is hydrogen or alkyl having one to four carbon atoms, Q is hydrogen, amino or nitro, and R is alkyl having from one to four carbon atoms, CH(C2H5)2, (CH2)n = CHCH2 where n is 1 or 2, or Y-Z where Y is alkylene having from one to four carbon atoms and having its connecting linkages on different carbon atoms and Z is hydroxy, OR1 or NR1R2 where R1 and R2 are each methyl or ethyl, or acid-addition salts thereof and there preparation by reacting a 2-Q-4-R min -pyrido[2,3-d]pyrimidin-5(8H)-one of the Formula III (herein) where Q is 4 (or 3)-methoxyphenyl, 4(or 3)-pyridinyl or 4(or 3)-pyridinyl having one or two lower-alkyl substituents or alkali or alkaline earth metal salt thereof with an alkylating agent. Also shown is the cardiotonic use of I where Q is 4(or 3)-hydroxyphenyl, 4(or 3)-pyridinyl or 4(or 3)-pyridinyl having one or two lower-alkyl substituents and Q min  is hydrogen or amino. The novel compounds of Formula III and their preparation are also claimed.
Patent FI-80082-B (FI)
Inventor: GIBSON JAMES DONALD MACKAY
IPC: A41D1/10
Filed: 1984-08-17
Granted: 1989-12-29
Abstract: An apparatus for the application of crease setting composition comprises at least one movable arm 12 capable of insertion into a leg of a pair of trousers to be creased, the arm carrying at, or near, one end thereof an applicator head 20 comprising a nozzle 22 for the application of crease setting composition and guide means 24 for locating the nozzle within the crease to be treated. Means are provided, for example, a pump or compressed air, for urging crease setting composition through the nozzle into the crease to be set in timed relationship with the relative movement between the applicator head 20 and the trousers 34. A method of operation is also disclosed.
Patent FI-81815-B (FI)
Title: Process for polymerizing or copolymerizing &alpha-olefins in a fluidized bed in the presence of a Ziegler-Natta catalyst system
Inventor: COLLOMB-CECCARINI JOELLE
IPC: C08F2/34
Filed: 1986-02-27
Granted: 1990-08-31
Abstract: The present invention relates to a process for the polymerisation or copolymerisation in a fluidised bed of alpha-olefins comprising 2 to 8 carbon atoms, by means of a Ziegler-Natta type catalyst system, consisting of a catalyst (a) comprising atoms of magnesium, halogen and a transition metal and a cocatalyst (b) consisting of an organo-metallic, which process is characterised in that the catalyst system is first of all either fixed on an inorganic granular support, or converted into a prepolymer, then subjected to a treatment by means of a polymerisation inhibiting agent, before being brought into contact with the alpha-olefins under polymerisation or copolymerisation conditions in a fluidised bed, in the presence of an additional quantity of co-catalyst (c) consisting of an organo-metallic compound which is identical to or different from that of which co-catalyst (b) consists.
Patent FI-86418-B (FI)
Inventor: BAKER DON ROBERT
IPC: C07D213/75
Filed: 1987-04-28
Granted: 1992-05-15
Abstract: Novel fungicidal pyridyl cyclopropane carboxamides having the general structural formula <CHEM> in which R is selected from the group halogen C1-C3 alkoxy and C1-C3 haloalkoxy, R1 is selected from the group of -H and -C IDENTICAL N; and R2 is selected from the group of -H, 1-CH3; and 2-CH3; X is O or S; and fungicidally acceptable organic and inorganic salts thereof. These compounds provide excellent control of fungal growth.
Patent FI-85535-B (FI)
Inventor: GRATZMULLER CLAUDE ALAIN
IPC: H01H33/34
Filed: 1988-04-27
Granted: 1992-01-15
Abstract: An open-center three-way hydraulic valve as applicable to hydraulic control circuits of electric circuit-breakers comprises an admission valve-head which is restored to the closed position by a first spring, a drain valve-head which is displaced toward the closed position by a pilot valve, a second spring which is more powerful than the first and tends to close the drain valve-head, and a resilient semi-locking mechanism for retaining the drain valve-head in the open position in opposition to the second spring when the pilot jack is not under pressure.
Patent FI-79672-B (FI)
Title: Coupling device
Inventor: JAERVINEN PEKKA
IPC: B60P1/64
Filed: 1988-06-03
Granted: 1989-10-31
Abstract: Coupling device (7) for moving demountable body systems (1) or containers equipped with known wheel systems (6) to be used together with a Bullmaster equipped with a gooseneck in a harbour or on a ship. The coupling device (7) includes locking devices (8) essentially behind the front surface for detachable locking by the demountable body system's container corner fittings (4). When moving using the gooseneck, the upper surface of the coupling device's front section is pressed against the demountable body system's rails (3) and the locking devices (8) prevent the rear section from becoming loose from its position.<IMAGE>
Patent FI-106803-B (FI)
Inventor: CHRISTENSEN BJOERN EGGERT
IPC: D06L4/70
Filed: 1993-09-27
Granted: 2001-04-12
Abstract: PCT No. PCT/DK92/00098 Sec. 371 Date Sep. 15, 1993 Sec. 102(e) Date Sep. 15, 1993 PCT Filed Mar. 27, 1992 PCT Pub. No. WO92/17571 PCT Pub. Date Oct. 15, 1992The present invention relates to catalases obtained from a strain of Scytalidium thermophilum or Humicola insolens which retains at least 75% residual activity after 20 minutes at 70 DEG  C. and a pH in the range of 9.0-10.5 in the presence of 40 mM polyvinyl pyrrolidone and methods for producing and using same.
Patent FI-113054-B (FI)
Inventor: WEBER WILHELM
IPC: C08K3/16
Filed: 1994-04-29
Granted: 2004-02-27
Abstract: The invention relates to a process for improving the shelf life (storage stability) of one-component silicone pastes which cure on contact with atmospheric moisture with elimination of acetic acid.
Patent FI-106127-B (FI)
Inventor: MCCARTHY JAMES RAY
IPC: C12N9/99
Filed: 1994-11-10
Granted: 2000-11-30
Abstract: The present invention is directed toward a novel process of 2'-exocyclic vinylfluoride derivatives of cytidine analogues (I) for use as ribonucleotide reductase inhibitors, wherein V is oxy or methylene and Y is hydrogen, C1-C4 alkyl or C1-C4 alkoxy.
Patent FI-109031-B (FI)
Inventor: NOORDEGRAAF JAN
IPC: F42B12/74
Filed: 1994-11-22
Granted: 2002-05-15
Abstract: The invention relates to a bullet based on an Sn alloy, wherein the Sn alloy comprises Cu, Sb, Bi and/or Zn as alloying element, wherein the Sn alloy preferably contains 0.2-10% by weight Cu, preferably 0.2-6% by weight Cu, or 0.2-10% by weight Cu and 0.5-20% by weight Sb, preferably 0.2-5% by weight Cu and 0.5-10% by weight Sb, or 1-15% by weight Sb, preferably 1-10% by weight Sb, or 0.5-30% by weight Bi, preferably 5-20% by weight Bi, or 0.005-10% by weight Zn, preferably 0.01-1% by weight Zn; and to the use of an Sn alloy for manufacturing a bullet.
Patent FI-111480-B (FI)
Title: Fish activity measuring device
Inventor: AALTO ERKKI
IPC: A61B/
Filed: 1996-08-26
Granted: 2003-07-31
Abstract: Device has a conducting lower electrode (14), upper electrode (8) with a conducting lower section floating on the surface, and signal leads (15,16). The upper electrode has maintenance hatch (12) and the device has overflow threshold (6) automatically setting the upper electrode to the correct water level. Endwalls (2) allow water to flow through.
Patent HU-184298-B (HU)
Title: Barrage of sustained movable dam
Inventor: AUBERT JEAN
IPC: E02B7/44
Filed: 1980-06-11
Abstract: The gate system comprises a wicket which is capable of taking up a number of different positions corresponding to predetermined angles of inclination, an operating device comprising a pivotally mounted jack, and a rotatable abutment member carried by the wicket for receiving the end of the operating rod of the jack. The jack is restored to an end position of angular orientation when the operating rod is moved away from the abutment member. This end orientation is close to the orientations of the jack during operation. The operating rod of the jack and the abutment member comprise guiding apparatus for orienting the jack towards the abutment member when the end of the jack-operating rod comes close to the abutment member.
Patent HU-195129-B (HU)
Inventor: MAGYAR TIBOR
IPC: A01G25/00
Filed: 1984-05-25
Abstract: A találmány szórófejre vonatkozik, mely főleg a mezőgazdaságban öntözővíz, folyékony műtrágyák és növényvédőszerek egyenletes növényzetre történő kijuttatására, porlasztására alkalmas. A találmány szerinti szórófej mindössze két részből áll. Az alsó rész (1), melybe érintőlegesen csatlakozik a folyadék bevezető csonk (5), belső terében kúpos (6) kiképzés van. Ez a kúpfelület benyúlik a fedél (2) furatába (7). Az alsórész és a fedél (2) egymáshoz menettel (8) csatlakozik, mellyel beállítható a porlasztás szükség szerinti minősége.  -1-
Patent HU-191853-B (HU)
Title: Process for prducing 1,4-dihydro-pyridine derviatives and pharmaceutical compositions containing them
Inventor: VOGEL ARNOLD
IPC: A61P9/00
Filed: 1983-06-14
Abstract: Compounds having the formula (I) wherein one of the two residues R1 and R2 is the methyl group and the other one is a group selected among isopropyl, n-butyl, isobutyl, cyclopentyl or isopropoxy-ethyl groups and the residue R3 is hydrogen or an optionally substituted alkyl group; these compounds are either in an optically active form when R3 is hydrogen, or in a racemic form or in an optically active form when R3 is an alkyl residue with 1 to 6 atoms of carbon, optionally substituted. Such compounds are used for the treatment of the deficiency of coronaries, cerebro-vascular deficiency, troubles of peripheral circulation, hypertension or asthma.
Patent HU-218295-B (HU)
Title: Method for producing of nutrient to increase the growth of animals
Inventor: GOERANSSON LEIF
IPC: A61K38/36
Filed: 1991-01-03
Abstract: PCT No. PCT/SE91/00003 Sec. 371 Date Aug. 13, 1992 Sec. 102(e) Date Aug. 13, 1992 PCT Filed Jan. 3, 1991 PCT Pub. No. WO91/09536 PCT Pub. Date Jul. 11, 1991The subject of the invention is a process to correct and optimize the feed-composition on basis of testing the levels of so called FIL-lectines in the blood. This correction is exerted by adding certain sugars and amino acids to the feed. Hereby the FIL-level may be adjusted in order to optimize the growth.
Patent HU-187352-B (HU)
Title: Airport tractor
Inventor: TUBOLY JANOS
IPC: F02B3/06
Filed: 1981-08-13
Abstract: An airport tractor for towing of aeroplane service vehicles, e.g. steps, air-conditioning equipment, luggage and cargo transport trailers also has its own loading surface (16) for transportation of cargo. The tractor has a hydrostatic transmission mechanism the pump of which is directly coupled to the diesel engine (1) of the vehicle. The transmission has an electromagnetic reversing valve controlled by a three- way selector switch. The hydraulic steering (13) of the vehicle is connected with a mechanical auxiliary steering. The reverse control switch (15) is located on the outside surface of the tractor. The brake system includes duplex drum brakes for the front wheels and drum brakes for the back wheels. <IMAGE>
Patent HU-189535-B (HU)
Inventor: KOLB RAINER
IPC: H02H7/08
Filed: 1981-09-25
Abstract: Schutzschaltung fuer elektrische Antriebe mit Transistorpulssteller, bei der die physikalische Groesse "Stromistwert" zum Schutz des Stellgliedes und zum thermischen Schutz eines an das Stellglied angeschlossenen Motors ausgewertet wird. Eine Anwendung der Erfindung ist insbesondere bei batteriegespeisten fuehrerlosen Flurfoerderfahrzeugen, Hebezeugen oder dergleichen vorgesehen.
Patent HU-209118-B (HU)
Title: Process for producing lightened rough ceramic products
Inventor: SZEPVOELGYI JANOS
IPC: C04B35/14
Filed: 1989-06-07
Abstract: The mixt. comprises (%w/w) 40-70 flue dust, 30-50 water, 20-40 of a mixt. of 40-65 CaO in the form of a hydrated calcium sulphate binder, 5-20 foam polymer and granulite, then 5-15 hydrated calcium sulphate. The mix is dried at 25-80 deg.C
Patent HU-195011-B (HU)
Inventor: ERDELYI JANOS
IPC: G01R29/02
Filed: 1984-08-15
Abstract: A találmány, tárgya kapcsolási elrendezés nagy alakhüségü, programozható és állandó kimeneti impedanciájú driver kialakítására, elsősorban impulzusgenerátorokban való alkalmazáshoz, amelynek időzítést és meredekséget meghatározó jelbemenete, célszerűen programozható szintű pozitív- és negatív feszültségszint kapcsa, valamint kimenete van. A kapcsolási elrendezés pozitív jelváltozást megvalósító egységgel és negatív jelváltozást megvalósító egységgel van ellátva, a pozitív jelváltozást megvalósító egység és a negatív jelváltozást megvalósító egység impulzuskeltö fokozattal, és adott esetben egy vagy több jelformáló fokozattal rendelkezik. A pozitív jelváltozást megvalósító egység és a negatív jelváltozást megvalósító egység ki-  -1-
Patent HU-207845-B (HU)
Title: Process for producing butene-carboxylic acid derivatives and pharmaceutical compositions containing them
Inventor: MINAMI NORIO
IPC: C07D405/04
Filed: 1990-05-18
Abstract: A butenoic acid compound is defined by the following formula:in which Z is O,S, vinylene or azomethyne, A is an alkylene and J is phenyl or etc. It is useful to treat the heart disease.
Patent HU-183645-B (HU)
Inventor: WIEDERHOLD MICHAEL
IPC: B65H54/52
Filed: 1981-10-27
Abstract: Die Erfindung betrifft eine Schaltungsanordnung zur Ueberwachung fotoelektrischer Kontrollsysteme, insbesondere an schnellaufenden Schnellverseilmaschinen. Durch die Erfindung sollen die hohen Aufwendungen fuer die genannten Kontrollsysteme vermindert werden. Die erfindungsgemaesse Aufgabe sieht eine Schaltungsanordnung vor, die bei zuverlaessiger Funktion die kostspieligen Bausteine und den hohen Aufwand vermeidet. Die Loesung der Aufgabe sieht vor, alle Ausgaenge der Lichtschranken sowohl an ein Und-Gatter und parallel dazu an ein Oder-Gatter zu legen. Die ueber die beiden Gatter laufenden Signale werden mit einem Zusatzsignal verkoppelt, so dass ein staendig anstehender High-Pegel den Normalzustand signalisiert. Abweichungen davon, wenn sie einen bestimmten Zeitwert ueberschreiten, fuehren zum Abschalten und Abbremsen der Verseilmaschine.
Patent HU-191888-B (HU)
Title: Equal-angle device protected against overload
Inventor: HOLLAI KORNEL
IPC: F16H35/10
Filed: 1983-11-01
Abstract: In normal service the mechanism is rigid but in case of an overload it changes shape, returning to its original shape when the load returns to normal. The mechanism comprises one or more arms connected together, and forming fixed and moveable elements, which can move relative to each other against the force of an adjustable spring. The normal shape of the mechanism is determined by stops, which limit the movement of the mechanism.
Patent HU-209647-B (HU)
Inventor: PARTNOFF JOEL
IPC: A61K/
Filed: 1988-03-03
Abstract: A találmány tárgya eljárás biológiailag aktív anyagot és lipidet tartalmazó kombinált készítmények (HDLCk) előállítására, melyekben a hatóanyagnak a lipidhez viszonyított aránya legalább 6 mol%, és amelyek liposzómát gyakolatilag nem tartalmaznak. Az eljárás során a lipidet közepesen poláros szerves oldószerben oldják, az aktív anyagot biológiailag összeférhető oldószerben oldják és a két oldatot összekeverik. A találmány szerinti eljárással előállított HDLC rendszerek csökkentett toxicitásúak. HU 209 647 B A leírás terjedelme: 36 oldal (ezen belül 20 lap ábra)
Patent HU-197176-B (HU)
Inventor: DORY BELA
IPC: A21D8/06
Filed: 1985-10-23
Abstract: A találmány eljárás péksütemény előállításéra, melynek során a nyers tésztát kiadagolva sütőforma fészkébe helyezzük, a sütőformában pihentetjük és/vagy megkelesztjük, majd megsütjük. Lényege, hogy mind a pihentetés és/vagy kelesztés, mind a sütés közben a tészta szabad felső felületének egy részét, előnyösen legalább egy vonalszerű felületrészt lefedve tartunk. A lefedett vonalszerű felületrészekből a tészta szabad felső felületén legyező-, rács-, vagy tetszőleges más alakü mintázatot alakítunk ki. A találmány továbbá sütőforma az eljárás foganatosításéra, amelynek legalább egy, egy tésztaadag befogadására alkalmas fészekkel (2) ellátott alsó része (1), valamint az alsó részre helyezhető, ahhoz oldható módon kapcsolt felső része (3) van. A felső rész a fészek pereméhez illeszkedő keretből (6)   és ehhez kapcsolt legalább egy rácselemből áll; ez a rácselem lehet például egy, vagy több legyező alakban elrendezett húr (7)   , amelyek a kész péksütemény alakjának megfelelő görbülettel lehetnek kialakítva. (1. ábra)  2.ábra 197176 -1-
Patent HU-210680-B (HU)
Title: Insecticid preparate againts cleoptera and process for its use and process for producing toxin from bacillus thuringiensis var. donegani
Inventor: CAPRIOLI VINCENZO
IPC: A01N63/50
Filed: 1990-07-31
Abstract: Disclosed is a Bacillus thuringiensis var. donegani, pathotype C, NCIMB 40152 and a preparation or toxin obtained therefrom, endowed with insecticidal activity against Coleoptera.
Patent HU-204464-B (HU)
Inventor: KIRALY JANOS
IPC: B60J1/16
Filed: 1989-11-09
Abstract: A találmány anyagtakarékos profilokból kialakított tolóablakkereL főként járművekhez, melynek egymáshoz illesztett, oldalszárakat is magába foglaló felső kerete és alsó kerete van. A tolóablakkeret felső kerete profiljának oldallapjai (1), középvonalában (15) választó borda (2) és befogó borda (3) van, az oldallapok (1) a választó bordával (2) egy-egy vezető hornyot képeznek. Az alsó keret profiljának külső oldallapja (5), külső vezető sínje (7), ezekkel a középvonalra (15) nézve szimmetrikusan elrendezett belső vezető sínje (8), belső oldallapja (6) van, továbbá alsó megvezető hornya (12) van, a lecsapódott pára és víz elvezetésére páraelvezető rések (10), lejtős síklap (9), víz és pára elvezető hornyok (11) vannak képezve, a felső keret és az alsó keret tömítésekkel (13) van egymáshoz illesztve, a felső keret profiljának és az alsó keret profiljának középvonala (15) közös síkban van.  HU 204 464 A leírás terjedelme: 6 oldal (ezen belül 1 lap ábra)
Patent HU-201988-B (HU)
Inventor: FORRAI GYOERGY
IPC: F16L59/06
Filed: 1988-11-29
Abstract: A találmány tárgya hőszigetelő szerkezet, amelynek üvegfalakkal határolt, vákuumozott vagy hőszigetelő gázt tartalmazó beíső terű hőszigetelő rétege (1) van, ahol az üvegfalak adott esetben foncsorozottan vannak kiképezve. A találmány lényege, hogy a hőszigetelő réteget (1) egymás mellé helyezett, végükön zárt üvegcsövek (12), vagy üveggömbök képezik. (2. ábra) A leírás terjedelme: 4 oldal, 2 ábra  2. ábra HU 201 988 B -1-
Patent HU-207255-B (HU)
Inventor: HALASZ ISTVAN
IPC: B65D88/34
Filed: 1990-10-30
Abstract: A találmány lényege, hogy az úszótető a tartály (1) falával érintkező, közel állandó kerületű, de változó alakú keresztmetszetet biztosító anyagból kialakított, feltölthető körgyűrűből (2), valamint a körgyűrűn (2) belüli, feltölthető kamrá(k)ból (3) áll, és a körgyűrű (2) üzembe helyezett állapotban teljes térfogatában folyadékkal, míg a kamra(’k) (3) gázzal, célszerűen levegővel van(nak) megtöltve.  1. ábra HU 207 255 B A leírás terjedelme: 4 oldal (ezen belül 1 lap ábra)
Patent IT-1198923-B (IT)
Title: Velvet fabric continuous prodn.
Inventor: CIAMPI MARCELLO
IPC: D04B/
Filed: 1984-09-12
Granted: 1988-12-21
Abstract: The method obtains photographic images of selected areas or portions of Human Bodies, Animals, Fish, Birds, Insects Trees, Bushes, Flowers, Plants or Seeds and Psychic phenonema. An electro magnetic field is formed on which is carried the energy pattern of the area to be photographed on a film or photographic paper situated between the Positive and Negative conductor plates of the circuit. Changes in the electromotive force in the circuit are produced by an Infra red sensor exposed to the influence of the radiant energy emitted from the donor Body, via the introduction of the sample taken from the donor Body introduced to the Infra red sensor. The device can be battery or mains powered.
Patent LT-3572-B (LT)
Title: A wide band optical amplifier
Inventor: GRASSO GIORGIO
IPC: H04B10/294
Filed: 1993-12-15
Abstract: The invention relates to an optical amplifier, particularly for optical fibre telecommunications lines, operating with the transmission signal in a predetermined wavelength band, which comprises an active laser emission optical fibre (6), doped with Erbium, having portions (11) of limited length provided with two cores (12, 13), one (12) of which is connected to the cores (16) of the remaining portions of active fibre (6) and with the line fibres (7), constituting the amplifier's input and output, while the second core (13) is optically coupled with the first (12) at a specific wavelength, different from that of transmission; the second core (13) is capable of removing from the first core (12) the spontaneous emission light of the Erbium, which would constitute a source of noise, thus allowing the amplification of a transmission signal in a range of wavelengths substantially corresponding to that of the tolerance of laser signal emitters (2) of a commercial type.