baber/WOPTO huggingface dataset:
Patent EP-0675876-B1 (EP)
Inventor: WORTHINGTON PAUL ANTHONY
IPC: A01N37/52
Filed: 1993-12-02
Granted: 1997-10-01
Abstract: L'invention concerne un composé selon la formule générale (I), dans laquelle R1 et R2 représentent indépendamment l'hydrogène, un alkyle C¿1-4?, un haloalkyle C1-4, un alcényle C2-4, un alcynyle C2-4, un cycloalkyle C3-6, un aryle ou arylalkyle C1-4; R?3¿ représente l'hydrogène, un alkyle C¿1-4?, un haloalkyle C1-4 ou cycloalkyle C3-6; A représente l'oxygène ou le soufre; W représente CH3O.CH = CCO2CH3, CH3O.N = CCONR?4R5, CH¿3O.CH = CCONR4R5 ou CH¿3?O.N = CCO2CH3 et leurs stéréo-isomères; X, Y et Z représentent indépendamment l'hydrogène, un halogène, un hydroxy, un mercapto, un alkyle C1-4, un alcényle C2-4, un alcynyle C2-4, un alcoxy C1-4, un alcényloxy C2-4, un alcynyloxy C2-4, un haloalkyle C1-4, un haloalcoxy C1-4, un alkylthio C1-4, un hydroxyalkyle C1-4, un alcoxy C1-4-alkyle C1-4, un cycloalkyle C3-6, un cycloalkyle C3-6, un cycloalkyle C3-6-alkyle C1-4, méthylènedioxy optionnellement substitué, aryle optionnellement substitué, hétéroaryle optionnellement substitué, hétérocyclyle optionnellement substitué, aryloxy optionnellement substitué, hétéroaryloxy optionnellement substitué, arylalkyle C1-4 optionnellement substitué dans lequel la fraction alkyle est optionnellement substituée avec un hydroxy, hétéroarylalkyle C1-4 optionnellement substitué, arylalkényle C2-4 optionnellement substitué, arylalkoxy C1-4 optionnellement substitué, aryloxyalkyle C1-4 optionnellement substitué, hétéroaryloxy-alkyle C1-4 optionnellement substitué, acyloxy, cyano, thiocyanato, nitro, -NR'R', -NHCOR', -NHCONR'R', -CONR'R', -COOR', -OSO2R', -SO2R', -COR', -CR' = NR' ou -N = CR'R' dans lesquels R' et R' représentent indépendamment l'hydrogène, un alkyle C1-4, un alcoxy C1-4, un alkylthio C1-4, un cycloalkyle C3-6, un cycloalkyle C3-6-alkyle C1-4, un phényle ou un benzyle, les groupes phényle et benzyle étant optionnellement substitués avec un halogène, un alkyle C1-4 ou un alcoxy C1-4; lorsque R' et R' sont dans CONR'R', ils peuvent former ensemble un anneau hétérocyclique à 5 ou 6 liaisons; ou deux substituants, lorsqu'ils sont dans des positions adjacentes dans l'anneau aryle ou hétéroaryle, peuvent se lier pour former un anneau aliphatique fusionné; et R?4 et R5¿ représentent indépendamment l'hydrogène ou un alkyle C¿1-4?.
Patent EP-0680522-B1 (EP)
Inventor: O'BRIEN WILLIAM GEORGE
IPC: C23C14/56
Filed: 1994-01-21
Granted: 1996-10-02
Abstract: Un film métallisé, biodégradable, comporte un film d'acide polyhydroxy, de préférence d'acide polylactique, recouvert d'un métal choisi dans le groupe: aluminium, or, argent, platine, cuivre, nickel, titane et tantale. Il constitue une excellente solution de rechange au polystyrène et aux autres matières d'emballage, notamment comme constituant d'un produit stratifié où il est collé à un substrat cellulosique à l'aide d'un adhésif.
Patent EP-0683677-B1 (EP)
Inventor: COOK JAMES N
IPC: C12S9/00
Filed: 1994-02-09
Granted: 2003-06-18
Abstract: The invention provides a process for the preparation of a tablet composition suitable for destroying substantially all of the hydrogen peroxide remaining after disinfecting a contact lens with a hydrogen peroxide solution, the tablet composition being a compressed tablet containing a non-mammalian derived catalase, but excluding tablets consisting of 1mg of A. niger catalase-R and a sorbitol carrier; which process comprises subjecting the catalase to conventional compression tableting conditions to produce a compressed tablet in which the stability of the catalase is greater than the stability of bovine catalase when subjected to the same conventional compression tableting.
Patent EP-0710109-B1 (EP)
Inventor: BARNETTE MARY S
IPC: A61K31/277
Filed: 1994-06-17
Granted: 2004-09-15
Abstract: This invention relates to a compound which selectively inhibits PDE IV and wherein the IC50 value for the PDE IV catalytic form which binds rolipram with a high affinity is lower than the IC50 value for the form which binds rolipram with a low affinity and to uses thereof in therapy.
Patent EP-0679236-B1 (EP)
Inventor: JAUHOLA LAURI
IPC: F15B13/00
Filed: 1993-12-29
Granted: 1999-03-03
Abstract: The object of the invention is a distribution beam intended for connecting devices using compressed mediums, which includes a longitudinal beam frame (1) equipped with a distribution channel (2), in which frame there are several transverse through holes (4) and set into them are attachment bolts (5) with air distribution channels (14) and shut-off spindles (11) and the head of each attachment bolt (5) includes a connection member (15) for attaching a device (20, 22) to be connected to the distribution beam and together with each attachment bolt (5) there are gaskets on both sides of the distribution channel (2). The beam frame (1) is widened in the direction of the attachment bolt (5) to create a gasket space for the length of the through hole (4), and a radial ring gasket (6, 7, 8) is formed on both sides of the distribution channel (2) between the bolt (5) and the beam frame (1).
Patent EP-0713450-B1 (EP)
Inventor: SCHWARZ MICHAEL
IPC: B43L25/00
Filed: 1994-07-05
Granted: 1997-03-12
Abstract: PCT No. PCT/EP94/02199 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Jul. 5, 1994 PCT Pub. No. WO95/04661 PCT Pub. Date Feb. 16, 1995A felt-tip pen (1) for writing on posters or the like is inserted into an ink pot for refilling and keeping. In order to prevent the outer sides of the felt-tip pen from becoming soiled with ink, the felt-tip pen has an axial groove (12) parallel to the felt-tip (10) entered by a collar (22) that surrounds the opening (21) of the ink pot (20) when the felt-tip pen is inserted through the opening. This groove is designed in an intermediate piece (5) that bears the felt-tip and that is in turn inserted onto the cup-shaped end (3) of the handle with a second groove (11 ) of the same size as the first but oriented in the opposite direction. The felt-tip may thus be inserted on both sides onto the handle (2) and into the ink pot and at the same time it is well sealed in the ink pot.
Patent EP-0671340-B1 (EP)
Inventor: DANDA WERNER
IPC: B65D51/28
Filed: 1995-01-26
Granted: 1998-04-22
Abstract: The combination packaging comprises a hollow extruded cartridge with a chamber for the primary substance (14) and a small holder for the secondary substance. A piston is provided which can slide in the cartridge. On the bottom side, the compartment is closed off from the filler compartment (16) by the hollow piston (12) open at the bottom. The small cylindrical receptacle preferably has a thin-walled outer casing (42) and a tear-off foil cover (44). The liquid accessory is contained in the receptacle and is for example a primer (50) with foam or felt applicator (46).
Patent EP-0685186-B1 (EP)
Inventor: HURST SIEGFRIED
IPC: F16B12/42
Filed: 1995-04-05
Granted: 1998-10-14
Abstract: The dia. of the metal, cylindrical clamps (6a,b,c) in the adaptor section (3) are such that they abut each other and the inner wall of the adaptor section. One clamp (6a) has a threaded bore for a screw (5), whose tip is conical. The envelope surface of the tip abuts the outer faces of the other two clamps (6b,c). Pref. one end of the tubular adaptor section is fitted with a plate for securing to the underside of the desk top of such dia. that it is slightly less than the inner dia. of the tubular column (2). <IMAGE>
Patent EP-0740153-B1 (EP)
Inventor: OLMA BERND DR
IPC: G01N29/30
Filed: 1995-04-28
Granted: 1997-04-16
Abstract: The acoustic reproduction system is used for a short-term sound pattern stored as digital sample values, with a pre-trigger section (1) and an event section (2), representing the background noise and the sound event noise. The pre-trigger section is used to provide a lead-in section and a run-on section positioned on opposite sides of the sound event section to provide a long-term sound pattern, converted into an acoustic signal.
Patent EP-0683335-B1 (EP)
Inventor: GENISE THOMAS ALAN
IPC: F16H59/14
Filed: 1995-04-28
Granted: 1998-01-28
Abstract: An adaptive control system/method for an at least partially automated vehicular mechanical transmission system (10) is provided for determining the current value of a control parameter (TFW) indicative of engine flywheel torque. Engine flywheel torque (TFW) is determined as a function of the expression gross engine torque (TEG) is equal to the sum of flywheel torque (TFW), base engine friction torque (TBEF), acceleration torque (TACCEL) and accessory torque (TACCES). Accessory torque (TACCES) is determined, when the vehicle is in motion, as a function of engine deceleration rate (dES/dt rate). Flywheel torque (TFW), or drivewheel torque (TDW) determined as a function of flywheel torque (TFW) and drivetrain parameters such as engaged gear ratio (GR), is utilized as a control parameter for controlling shifting of the transmission system. <IMAGE>
Patent EP-0743049-B1 (EP)
Inventor: LIMACHER URS
IPC: A61F2/32
Filed: 1995-05-18
Granted: 2001-08-29
Abstract: The clamp connection is formed by positive friction between the inner shell (3) and the outer shell (2) and in the dividing surface between the two shells a tunnel is formed, which in an arc (37) to the shell base (7) connects two points on the shell edge. This permits a wire (8) inserted through the tunnel to withdraw the inner shell against the retaining forces of the positive friction out of the outer shell.   The tunnel is formed by a channel (9) in the inner shell. The inner shell is made of metal or ceramic. A withdrawing aid acting on the wire inserted through the tunnel supports on the edges of the outer shell.
Patent EP-0684794-B1 (EP)
Inventor: CATON JACQUES
IPC: A61F2/36
Filed: 1994-12-20
Granted: 1998-11-25
Abstract: Le clou tibial centro-médullaire présente dans sa partie proximale cintrée (1a) des trous (1b, 1c) pour le passage d'organes de fixation (2). Les trous (1b, 1c) sont orientés pour être disposés, après impaction du clou dans le canal centro-médullaire, en alignement co-axial avec les organes engagés très sensiblement perpendiculairement aux surfaces osseuses planes de la section tibiale de forme générale très sensiblement triangulaire.
Patent EP-0746567-B1 (EP)
Inventor: BROWN WILLIAM
IPC: A61K38/07
Filed: 1995-02-15
Granted: 2002-05-02
Abstract: This invention relates to a series of novel opioid peptides for the treatment of pain and pharmaceutically acceptable compositions comprising those peptides. The invention also teaches methods for controlling pain in patients using compositions of the invention. The peptides of this invention have a high degree of selectivity for the  mu -opioid receptor. These peptides are highly lipophilic. In spite of their lipophilic character they do not readily cross the blood brain barrier (BBB). The peptides of the present invention are particularly well-suited as analgesic agents acting substantially on peripheral  mu -opioid receptors. Because these peptides act peripherally, they substantially avoid producing side effects normally associated with central analgesic action.
Patent EP-0804437-B1 (EP)
Inventor: LAUFER STEFAN
IPC: C07D487/04
Filed: 1995-05-31
Granted: 2005-09-14
Abstract: PCT No. PCT/EP95/02078 Sec. 371 Date Mar. 28, 1997 Sec. 102(e) Date Mar. 28, 1997 PCT Filed May 31, 1995 PCT Pub. No. WO95/32971 PCT Pub. Date Dec. 7, 1995The present invention relates to heterocyclic compounds with the formula in which R1 to R7, B, a, and X have the meanings indicated in the specification. These compounds can be used for the treatment of diseases of the rheumatic variety and for the prevention of allergically-induced diseases.
Patent EP-0773997-B1 (EP)
Inventor: BENNETT BRIAN D
IPC: C07K14/47
Filed: 1995-07-14
Granted: 2006-04-26
Abstract: A novel hepatoma transmembrane kinase receptor ligand (Htk ligand) which binds to, and activates, the Htk receptor is disclosed. As examples, mouse and human Htk ligands have been identified in a variety of tissues using a soluble Htk-Fc fusion protein. The ligands have been cloned and sequenced. The invention also relates to nucleic acids encoding the ligand, methods for production and use of the ligand, and antibodies directed thereto.
Patent EP-0756537-B1 (EP)
Inventor: VLUG MARC ANDREW
IPC: B29C48/06
Filed: 1995-03-16
Granted: 1998-10-14
Abstract: PCT No. PCT/EP95/01024 Sec. 371 Date Nov. 4, 1996 Sec. 102(e) Date Nov. 4, 1996 PCT Filed Mar. 16, 1995 PCT Pub. No. WO95/25000 PCT Pub. Date Sep. 21, 1995A process of making a fiber-reinforced polymeric material comprises sliding a fiber bundle over an arcuate support surface (2) in the line of the arc, and injecting into the bundle a molten or liquid polymer through a plurality of slots (4) in the surface, each slot being transverse to the bundle. The process allows effective impregnation of materials, at relatively high production speed and low capital costs.
Patent EP-0781375-B1 (EP)
Title: Procede de commande d'un moteur a combustion interne a injection directe
Inventor: AUBOURG ALAIN-MICHEL-JEAN
IPC: F02D41/24
Filed: 1995-09-08
Granted: 2000-02-02
Abstract: Procédé de commande d'un moteur à combustion interne (1) à injection directe, utilisant une mesure du degré d'enfoncement (PP) d'une pédale d'accélérateur (4) et du régime (N) de rotation du moteur pour fournir des paramètres (Ti; ζi; All; αP) de réglage optimal du moteur, selon lequel: on établit, lors de la mise au point du moteur, une table représentant pour chaque couple degré d'enfoncement (PP), régime (N), le rapport pression/température (RPTO) de l'air régnant dans le collecteur d'admission; on mesure, en fonctionnement normal, la pression (Pcol) et la température (Tcol) de l'air admis, et on forme le rapport pression/température mesurés (RPTm); d'une part, on agit sur l'angle d'ouverture (αP) d'un papillon des gaz (9) placé dans le collecteur d'admission pour asservir ce rapport (RPTm) à une valeur de consigne lue dans la table; et d'autre part on détermine par lecture inverse de la table, à partir du régime (N) et du rapport (RPTm) mesurés un degré d'enfoncement virtuel (PPV) de la pédale d'accélérateur pour fournir au moins un des paramètres de réglage optimal du moteur.
Patent EP-0751242-B1 (EP)
Inventor: ASAHI TOSHIAKI
IPC: C30B15/36
Filed: 1995-10-04
Granted: 2002-09-04
Abstract: L'invention concerne un procédé permettant de produire, à un haut rendement, un monocristal massif de bonne qualité, consistant à préparer une solution (12s) de matériau de départ dans un solvant au moyen d'un cristal germe (10) en feuille mince de grand diamètre, d'un composant autre que le cristal dont on veut obtenir la croissance, à réguler la température du côté inférieur de la solution (12s) (ou du matériau de départ fondu (12m)) pour qu'elle soit supérieure à la température du côté supérieur de ladite solution ou dudit matériau et produire ainsi une convection, à maintenir ladite température pendant un temps donné pour laver la surface du cristal germe (10) par convection, et à amorcer la croissance du cristal selon, par exemple, le procédé Bridgman ou la technique de congélation graduée, de sorte qu'un gradient de température soit obtenu à la surface du cristal germe (10) par basculement du cristal (10) de façon qu'un cristal primaire se forme au niveau du site présentant la température la plus basse de la surface, ou qu'un creux ou une saillie minuscule soit formé(e) à l'avance au niveau d'un site de cette surface de façon que le cristal primaire se forme sur ce site.
Patent EP-0722934-B1 (EP)
Inventor: JELIG KLAUS DR
IPC: C07D213/61
Filed: 1996-01-08
Granted: 2000-11-02
Abstract: Prepn. of 5-substd. 2-chloropyridines of formula (I) comprises (1) reacting acetenamides of formula (II) with Vilsmeier reagent (III), which is prepd. by reacting formamides of formula (IV) with a chlorinating agent (V); and (2) removing excess (V) after reaction by distn. or addn. of dialkylformamide: R = opt. substd. (ar)alkyl; R1 = 1-4C alkyl or aryl-(1-4C)-alkyl; R2,R3 = linear, branched or cyclic 4-8C alkyl.
Patent EP-0743301-B1 (EP)
Inventor: DORSCH DIETER DR
IPC: C07C279/22
Filed: 1996-05-02
Granted: 2001-08-29
Abstract: Fluorine-contg. benzoylguanidine derivs. of formula (I) and their salts are new. R<1> = H, halo, A, CN, NO2, CnFmH2n+1-mOp, 2-4C alkynyl or XR<4>; R<2> = CnFmH2n+1-mOp; R<3> = H, A, halo, A, CnFmH2n+1-mOp, SOqR<6>, SO2NR<4>R<5>, Het., OR<6>, SR<6>, SHet. or NR<7>Het; R<4>, R<5> = H or A; or R<4>+R<5> = 4-5C alkenyl with one -CH2- gp. opt. replaced by O, S, NH or NA; R<6> = Ph or A; R<7> = H or A; A = 1-6C alkyl; X = O, S or NR<7>; Ph = phenyl opt. substd. by 1-3 A, OA, NR<4>R<5>, halo or CnFmH2n+1-mOp; Het. = mono- or bicyclic opt. satd. aromatic heterocyclyl having 1-4 N, O and/or S, opt. substd. by 1-3 F, Cl, Br, CnFmH2n+1-mOp, XR<4>, A, NO2, CN and/or carbonyl O, and linked via N or C to the benzoyl system; m = 1-7(max 2n+1); n = 1-3; p = 0 or 1; q = 1 or 2; and provided that R<1> = H only when R<3> = SOqR<6> or SO2NR<4>R<5>.
Patent EP-0749104-B1 (EP)
Inventor: OHNESORG ANDREAS
IPC: G09F9/30
Filed: 1996-06-10
Granted: 1999-11-03
Abstract: The device has a light guide (22) between the light source and an opening in a housing wall facing the observer. The curved light conductor is fixed at the end (23) remote from the light source in a holder mounted (26) in the opening (25). The end (23) of the light guide engaging the holder has latching bulges (46,47) with a larger outer dia. than the opening which accepts the light conductor, so that the light guide is fixed by friction in the holder. There may be at least two light sources and at least two light guides. The holder has a number of openings corresp. to the number of light guides.
Patent EP-0754670-B1 (EP)
Inventor: DESMARTEAU DARRYL D
IPC: B01J27/12
Filed: 1996-07-11
Granted: 1999-10-06
Abstract: Process for preparing fluoroxy- or chloroxy-perfluoroacylfluorides FC(O)-RF-CF2OX, wherein RF is a perfluoroalkylenic or perfluoropolyoxyalkylenic chain, X is -F or -Cl, by fluorination or chlorofluorination of the corresponding perfluorodiacylfluoride FC(O)-RF-C(O)F with X-F in the presence of an hydrogenfluoride corresponding to the formula MeFy . zHF, wherein: Me is an alkaline or alkaline-earth metal, y is 1 when Me is an alkaline metal, or y is 2 when Me is an alkaline-earth metal; z is comprised between 0.5 and 4.
Patent EP-0786574-B1 (EP)
Inventor: ARNOLD ANDRE
IPC: E05C7/04
Filed: 1996-11-27
Granted: 2001-03-21
Abstract: The fitment can be mounted in the rebate between the two casements (1,3). A sleeve rail (13) is fixed on the rebate face (5) of one casement. A resiliently mounted projection (35) directed towards the rail is provided on the rotary arm (19) mounted on the outside of the rail. The projection engages in a recess (37) of the rail and can fix the rotary arm in the locking position on the rail secure against rotation. The locking projection (35) can be drawn out of the recess (37) against spring force by a handle (39). The handle and/or locking projection has a stop face (41,45) directed towards the rebate face (6) of the other casement. When the casements are closed the stop face stops against the rebate of the other casement to prevent movement of the projection out of the recess.
Patent EP-0872039-B1 (EP)
Inventor: KESKITALO ILKKA
IPC: H04B1/7115
Filed: 1996-05-23
Granted: 2003-11-05
Abstract: A base station equipment for receiving and transmitting a signal of a desired user, which signal to be received may arrive at the equipment along several different paths with several different delays, and which equipment includes one or more antenna arrays composed of several elements, one or more channel units having components for phasing the signal to be transmitted and received by the antenna array in such a way that the gain from the antenna array is the greatest in the desired directions. Each channel unit includes components for searching for the incoming directions and delays of the received signal components, and components for controlling the phasing components on the basis of the information in such a way that the angle of the greatest gain of the antenna beams is deflected in the environment of the desired directions.
Patent EP-0828677-B1 (EP)
Inventor: MEINECKE ALBRECHT
IPC: B65H19/22
Filed: 1996-05-23
Granted: 2002-08-07
Abstract: L'invention concerne un dispositif d'enroulement pour renvider une bande de papier immédiatement après sa fabrication. Ce dispositif comporte un tambour porteur sur lequel la bande de papier est guidée depuis un côté (côté alimentation); un axe d'enroulement pourvu de tourillons; des leviers articulés qui supportent les tourillons avec des fourches et font pivoter l'axe d'enroulement, avec la bande de papier enroulée dessus, autour du tambour porteur d'une position d'alimentation à une position de dévidage; un élément de coupe longitudinal situé dans la région du côté enroulement et en amont du tambour porteur pour découper la bande en bandelettes; un cylindre presseur pour exercer une pression d'appui sur les bandelettes de papier; et un cylindre de support situé sur le côté déroulement du tambour porteur dans la région de dévidage.
Patent EP-0833597-B1 (EP)
Title: Articles absorbants comportant des elements recouvrant un sous-vetement specialement concus pour se replier sur les bords de ce dernier
Inventor: REDWINE NONA JANE
IPC: A61F13/72
Filed: 1996-06-03
Granted: 2000-08-09
Abstract: Articles absorbants tels que serviettes hygiéniques, protège-slips et couches pour adultes, pourvus de composants recouvrant les sous-vêtements (ou 'éléments enveloppant les bords') qui partent de la partie principale de l'article absorbant et se replient automatiquement sur les bords de la culotte de celui ou celle qui les porte; ces éléments remplacent les pattes latérales classiques. Les éléments enveloppant les bords comportent au minimum une zone d'extensibilité, ainsi qu'une région plus rigide et moins extensible que cette dernière. De préférence, l'article absorbant comporte au minimum trois régions ayant des modules de flexion différents, ce qui permet de fixer avec précision le point de l'article où vont se replier les éléments enveloppant les bords.
Patent EP-0856199-B1 (EP)
Inventor: DUMOULIN ANN
IPC: H01L23/13
Filed: 1996-10-10
Granted: 2001-08-22
Abstract: PCT No. PCT/EP96/04407 Sec. 371 Date Apr. 16, 1998 Sec. 102(e) Date Apr. 16, 1998 PCT Filed Oct. 10, 1996 PCT Pub. No. WO97/15078 PCT Pub. Date Apr. 24, 1997In order to achieve better dissipation of the heat losses, a polymer stud grid array in proposed having an injection-molded, three-dimensional substrate (S) composed of an electrically insulating polymer, polymer studs (PS) which are arranged over the area on the underneath of the substrate (S) and are integrally formed during injection molding, external connections which are formed on the polymer studs (PS) by an end surface which can be soldered, conductor runs which are formed at least on the underneath of the substrate (S) and connect the external connections to internal connections, at least one heat sink (WL) which is partially coated during the injection molding of the substrate (S), and having at least one chip or wiring element (VE) which is arranged on the heat sink (WL) and whose connections are electrically conductively connected to the internal connections. The new configuration is suitable in particular for power components or power modules in a polymer stud grid array package.
Patent EP-0839766-B1 (EP)
Inventor: SCHMIDT ROLF
IPC: C02F3/12
Filed: 1997-10-24
Granted: 2001-11-28
Abstract: Multi-stage waste water treatment process, especially for communal sources where the input flow (1) is divided into two streams (4, 5). The first stream (4) enters a denitrification unit (6) of a first purification stage (2). The output (9) of this unit (6) enters an intermediate clarifier (8). Sludge produced here (8), is passed directly and/or indirectly to a nitrification unit (7) in the first purification stage (2). The output (13) flows back to the denitrification unit (6) of the first stage (2). The efflux (16) from the intermediate clarification unit (8) is sent to the second purification stage (3), together with the second stream (5). Also claimed is a multi-stage waste water treatment plant for use in the process.