baber/WOPTO huggingface dataset:
Patent IE-831630-L (IE)
Title: Carbacyclin derivatives
IPC: A61K31/557
Filed: 1983-07-13
Abstract: Carbacylin derivatives of the general formula I <IMAGE>  in which   R1 denotes a hydrogen atom or the radical OR2, in which R2 can denote hydrogen, alkyl, cycloalkyl, aryl, the radical <IMAGE> or a heterocyclic radical, or R1 can denote the radical NHR3 where R3 denotes an acid radical or the radical R2, n can denote the number 2, 3, 4 or 5, X denotes a hydrogen atom or a fluorine atom,    A denotes a -CH2-CH2-, a trans -CH=CH- or -C IDENTICAL C- group,   W denotes a free or functionally modified hydroxymethylene group or a free or functionally modified <IMAGE> group, in which the OH group can be in the  alpha  or  beta position,    D denotes the group <IMAGE> a straight-chain, saturated alkylene group having 1-5 C atoms, a branched saturated or a straight-chain or branched unsaturated alkylene group having 2-5 C atoms, which may be substituted by fluorine atoms,    m can denote the number 1, 2 or 3,   E represents a direct bond, a -C IDENTICAL C- group or a -CR6=CR7- group, in which R6 denotes a hydrogen atom or an alkyl group having 1-5 C atoms and R7 denotes a hydrogen atom, an alkyl group having 1-5 C atoms or a halogen atom,   R4 denotes an alkyl, cycloalkyl or a substituted or unsubstituted aryl group or a heterocyclic group,    R5 denotes a free or functionally modified hydroxyl group, and, if R2 denotes a hydrogen atom, the salts thereof with physiologically acceptable bases, a process for their preparation and their use as pharmaceuticals.
Patent IE-831689-L (IE)
Title: Apparatus for hair removal
IPC: A45D26/00
Filed: 1983-07-19
Abstract: An electrically powered depilatory device including a hand held portable housing (2), motor apparatus (4, 4 min ) disposed in the housing, and a helical spring (24) comprising a plurality of adjacent windings arranged to be driven by the motor apparatus (4, 4 min ) in rotational sliding motion relative to skin (5) bearing hair to be removed, the helical spring (24) including an arcuate hair engaging portion arranged to define a convex side whereat the windings are spread apart, and a concave side corresponding thereto whereat the windings are pressed together, the rotational motion of the helical spring (24) producing continuous motion of the windings from a spread apart orientation at the convex side to a pressed together orientation at the concave side and for engagement and plucking of hair from the skin (5), whereby the surface velocities of the windings relative to the skin (5) greatly exceed the surface velocity of the housing relative thereto.
Patent IE-891932-L (IE)
Title: Novel benzazepine derivatives
IPC: C07D495/04
Filed: 1989-06-15
Abstract: Novel 2,3,4,5-tetrahydro-1H-3-benzazepines having the formula <CHEM> wherein R<3> represents H, C1-3-alkyl or C3-7-cycloalkyl; R<4> represents hydrogen or R<4> together with R<1><0> represents a bridge which connects the positions to which R<4> and R<1><0> are linked, said bridge being -CH2-CH2-, -CH=CH-, -O-CH2- or -S-CH2-;  R<7> represents hydroxy, lower alkoxy; R<1><0>, R<1><1>, R<1><2> independently represent hydrogen or halogen or alkyl or R<1><0> together with R<4> represents a bridge as described in connection with the definition of R<4>; or R<1><0> together with R<1><1> represents a bridge or R<1><1> together with R<1><2> represents a bridge, the bridge in both cases being chosen among -O-CH2-CH2-, -O-CH2-CH2-CH2-, -O-CH=CH-, -CH2-CH2-CH2-, -CH2-CH=CH- or -CH2-CH2-CH2 CH2-;  R<1><3> represents hydrogen, halogen or lower alkyl. The compounds are useful in preparations for treatment of disorders in the central nervous system.
Patent IE-41752-L (IE)
Title: Hand tool for breaking the necks of glass ampules.
IPC: D01F6/04
Filed: 1975-10-14
Abstract: A novel protective hand tool for the manual or digital breaking of glass-sealed ampules of medication and other liquid or dry materials comprising two oppositely facing cylindrical members having a common longitudinal axis, each open at its outer end, each having a closed end, said closed ends being joined and separated by an intervening web of material, the walls of each said cylinder being composed of and having a thickness such that said walls are inwardly eliptically digitally deformable and recoverable to its original cylindrical form upon release of digital pressure, said cylinders being of differing diameters, each of said cylinders having a length adapted to receive the upper portion only of an ampule to be broken whereby the lower portion of said ampule projects beyond the end of said cylinder, each of said cylinders being of a diameter adapted to loosely receive said upper portion of said ampule whereby said walls can be externally eliptically digitally deformed against said upper portion of said ampule to hold said upper portion while said lower portion of said ampule is digitally held by the other hand so that said upper and lower portions can be broken and separated by flexing digital force.
[US3999451A]
Patent IE-882255-L (IE)
Title: Preparation of quinolonecarboxylic acids
IPC: C07D215/56
Filed: 1988-07-22
Abstract: A novel method for the preparation of intermediates for pharmaceutically active quinolonecarboxylic acids in a single-step method.
[EP0300311A2]
Patent IE-832338-L (IE)
Title: Strengthening particulate matrix
IPC: E01C11/16
Filed: 1983-10-04
Abstract: Relatively small, generally flat pieces (1) of flexible, open plastics mesh structure are randomly embedded in a matrix (2) without creating a substantial amount of extra void space in the matrix (2). Each piece (1) comprises more than one mesh opening, has tenaceous junctions or intersections, has high dimensional stabilily in the plane of the piece, and has high flexural recovery. In the case of soil, a special machine can be provided which cuts up a reel (14) of continuous mesh structure and has a rotary digging tool (23) which digs up the top layer of soil and mixes the pieces (1) with the soil.
[EP0122995A1]
Patent IE-882475-L (IE)
Title: C.12 modified erythromycin a derivatives
IPC: C07H17/08
Filed: 1988-08-12
Abstract: Antibacterial 12,12 min -anhydro-9R-hydroxy-9-deoxoerythromycin A derivatives, intermediate therefor and process of 12,12 min -dehydration.
Patent IE-44516-L (IE)
Title: Androst-4-ene-3,17-diones
IPC: A61K31/565
Filed: 1976-12-20
Abstract: A process for the preparation of 4-androstene-3,17-dione derivatives of the formula <IMAGE> wherein X is 1,2-methylene or 1- or 2-methyl, comprises fermenting a sterol derivative of the formula <IMAGE> wherein X is as above, the bond is a single or double bond, and R1 is the hydrocarbon residue, of 8-10 carbon atoms, of a sterol, with a microorganism culture capable of the side chain degradation of sterols.
[US4100026A]
Patent IE-812988-L (IE)
Title: 5 - aryl - cyclohexane -1,3-dione herbicides
IPC: A01N35/06
Filed: 1981-12-18
Abstract: Compounds of the general formula <IMAGE> where X is fluorine, chlorine, ethyl or n-propyl, and the salts of these compounds, and herbicides containing the compounds or their salts.
[US4844735A]
Patent IE-843238-L (IE)
Title: Ostomy appliance.
IPC: A61F5/443
Filed: 1984-12-18
Abstract: An ostomy appliance includes a bag for receiving discharged wastes. There is a stomal orifice (2518) in one wall of the bag and a washer (2512) attached to the wall of the bag and having a flat surface (2514) intended to face towards the body of the wearer when the appliance is worn, surrounding said orifice. A medical grade adhesive pad carries a flange and has an inner peripheral rib (2522). Adhesive means (2323) is used for adhesively attaching said bag to said flange. The washer (2512) further comprises a flexible seal strip (2520) at the inner margin of said washer surrounding said stomal orifice.
[EP0276898A2]
Patent IE-894045-L (IE)
Title: Anti-slip composition
IPC: C09K3/14
Filed: 1989-12-15
Abstract: The coefficient of friction between floors and shoes, particularly in food plants, can be increased by applying thereto, an anti-slip composition comprising sodium bicarbonate and an abrasive, preferably calcium carbonate. Food grade compositions can be provided. It has also been found that sodium bicarbonate alone or in combination with an abrasive can be used to absorb oil, grease and chemicals from surfaces. An abrasive can be added to improve the anti-slip characteristics of the absorbant.
[EP0377951A1]
Patent NO-744131-L (NO)
Inventor: KNIBBE D E
IPC: E21B/
Filed: 1974-11-18
Abstract: Fralandskonstruksjon for utførelse av arbeider i en undervannsbrønn
Patent NO-790811-L (NO)
Title: Kapsel og fremgangsmaate til fremstilling av samme
Inventor: WARD GARY A
IPC: A61J1/05
Filed: 1979-03-12
Abstract: Kapselformet lukkeanordning og fremgangsmåte ~° til fremstilling av samme.
Patent NO-813625-L (NO)
Inventor: ZIMMERMANN INGFRIED
IPC: A61M31/00
Filed: 1981-10-27
Abstract: A vaginal ring comprises a supporting ring 1 free of active agent. A layer 2, which contains an active agent such as a steroid, is applied on its outer rim, optionally in a continuous groove provided in the supporting ring. This layer, in turn, is coated with a layer 3 devoid of active ingredient. All components preferably comprise an LTV silicone elastomer. The ratio of the thickness of the layer 2, containing an active agent, to the layer 3, free of active agent, is about 5-50:1. As a result, a long-term and uniform release rate is achieved for the active agent.
Patent NO-842493-L (NO)
Inventor: BRIAN RENE
IPC: B61B12/00
Filed: 1984-06-20
Abstract: 1. Modular elongated gangway (18), especially of an aerial ropewaytower (10), for having access to the cable (14) support elements (14), comprising a stringer (20) of a given length, along which a plurality of modules (22, 40) forming the gangwayfloor are staggered ; each module (22, 40) being secured to the stringer (20) with an adjustable slope, characterized in that each module is constituted by a rectangular frame supporting a stair, one side of the frame being disposed on the side of the stringer (20) and being secured to this stringer with an adjustable slope by a central bolt (30) and by latching means (34, 38) susceptible to lock in rotation the module.
Patent NO-871671-L (NO)
Inventor: GOLLUB RAPHAEL
IPC: H04J3/00
Filed: 1987-04-22
Abstract: An efficient system for simultaneously conveying a large number of telephone conversations over a much smaller number of relatively low-bandwidth digital communication channels is disclosed. Each incoming telephone speech signal is filtered, periodically sampled, and digitized. An efficient computational speech compression algorithm is applied to transform a sequence of digitized speech samples into a much shorter sequence of compression variables. The compression variable sequence is further processed to construct a minimum-length bit string, and an identifying header is appended to form a packet. Only a few packets containing information on representative background noise are generated during pauses in speech, thereby conserving digital bandwidth. The packets are queued and transmitted asynchronously over the first available serial digital communication channel. Numerical feedback to the compression algorithm is employed which results in the packet size being reduced during periods of high digital channel usage. Packet header information is utilized to establish a "virtual circuit" between sender and receiver.
Patent NO-883424-L (NO)
Inventor: LUEHRS HERMANN
IPC: B30B9/14
Filed: 1988-08-02
Abstract: PCT No. PCT/EP87/00672 Sec. 371 Date Jul. 25, 1988 Sec. 102(e) Date Jul. 25, 1988 PCT Filed Nov. 4, 1987 PCT Pub. No. WO88/04233 PCT Pub. Date Jun. 16, 1988.A spindle press (1) comprises a housing (3) with an upper part (2) and a lower part (5). A press spindle (16) is supported with an upper bearing (14) in a cover (11) of the upper part (2) and with a lower bearing (19) in the lower part (5) so as to be rotatable. The press spindle (16) comprises a hollow spindle body (27) with perforations (38) for pressed out fluid, compressor wings (56) and worm wings (57) being placed on the spindle body (27) externally. Interruptors (26), which are fastened at the housing (3), extend between these wings in a plurality of axial planes. The housing comprises a screen casing (22) permeable for the pressed out fluid and also a spray casing (21) at a distance outside of the latter. The pressed out fluid is guided away through a dewatering arrangement (30) of the lower part (5). The lower part (5) rests on a vertical frame (7) which encloses a telescoping drive pipe (52) and, further down, a drive arrangement (12) which drives the drive pipe (52) in a rotating manner. The drive pipe (52) is connected with the spindle body (27) within the lower bearing (19).
Patent NO-892521-L (NO)
Inventor: CHITTOFRATI ALBA
IPC: C08J3/03
Filed: 1989-06-16
Abstract: An electrochemical process is described wherein a gaseous substance is reduced at the cathode and in which microemulsions of the oil-in-water (o/w) type are utilized as catholytes, said microemulsions showing electric ion transfer and interphase matter transfer capacity. The oil phase of said microemulsion consists of perfluoropolyethers having perfluoroalkyl end groups or hydrophilic functional end groups or of perfluorocarbons and said microemulsions are obtained by using perfluorinated surfactants, in particular those having a perfluoroalkylpolyether structure,and/or by using an alcohol as cosurfactant.
Patent NO-900831-L (NO)
Title: Fremgangsmaate for fremstilling av piperidinforbindelser.
Inventor: SAUERBERG PER
IPC: C07D285/06
Filed: 1990-02-21
Abstract: Forbindelse med formel I. hvor Z er oxygen eller svovel,. R er H,_-alkyl,_-cykloalkyl,_-alkenyl eller C_-alkynyl,. og er uavhengig av hverandre calky1c-10alkeny1-10" alkynyl, C_-aikoxy, C_-cyklo-alkyl, Cj^_^Q-alkylamino,_io~ alkylaminomethyl, C_-alkoxymethyl, io, C_-alkoxyimino-methyl, halogen eller amino, eller et salt derav med en farmasøytisk aksep-tabel syre. Forbindelsene kan anvendes ved stimulering av ce kognitive funk-sjoner i forhjernen og hippocampus hos pattedyr, inkludert mennesker, og ved behandling avlzheimers sykdom.Fremstilling av forbindelsene er beskrevet.
Patent NO-921077-L (NO)
Inventor: FISHER MICHAEL H
IPC: C07D401/10
Filed: 1992-03-19
Abstract: There are disclosed certain novel compounds identified as benzo-fused lactams which promote the release of growth hormone in humans and animals. This property can be utilized to promote the growth of food animals to render the production of edible meat products more efficient, and in humans, to increase the stature of those afflicted with a lack of a normal secretion of natural growth hormone. Growth promoting compositiors containing such benzo-fused lactams as the active ingredient thereof are also disclosed.
Patent NO-930273-L (NO)
Inventor: HAUSCH GERNOT
IPC: H01F3/10
Filed: 1993-01-27
Abstract: In order to produce a pulse generator, in the case of which a voltage pulse, which is independent of the magnetic field change, can be produced by sudden reversal of the magnetisation (Barkhausen effect) when a magnetic field is applied, an iron alloy 2 is used for one of the materials of the composite body, the additional alloying components of which alloy are selected such that a structural transformation takes place, with a volume change, at different temperatures in each case. In order to produce the braced state, heat treatment is then carried out, which includes heating above the upper transition temperature and cooling below the lower transition temperature. This results in considerably higher stresses between the materials of the composite body and hence a pulse behaviour which is considerably better than that known and which can be used for identifying constant or alternating magnetic fields. <IMAGE>
Patent NO-932629-L (NO)
Title: Vannbasert borefluidum
Inventor: ELWARD-BERRY JULIANNE
IPC: C09K8/20
Filed: 1993-07-21
Abstract: Et vannbasert fluidum for anvendelse ved boring av brenner er reologisk stabilt over et bredt temperatur- område fra romtemperatur til minst 245*C, noe som nedsetter boretiden ved høytemperaturanvendelser, gir typisk minimale deponerings/dumpe-mengder under operasjon, er resistent mot temperaturindusert karbonat- geling og kombinerer den lave toksisitet for et vann- basert fluidum med arbeidsstabiliteten for et olje- basert fluidum. Borefluidumet omfatter en vannbasert kollodial suspensjon av visse lett tilgjengelige borefluidumkomponenter, innbefattende leire, et uorganisk salt og paranchymalcelle-cellulose ("PCC").
Patent NO-932730-L (NO)
Title: Sementeringsapparat
Inventor: STREICH STEVEN G
IPC: E21B33/16
Filed: 1993-07-29
Abstract: En anordning til trinnsementerlng og med ekspansjon spakn ing. Anordningen omfatter en dor (11) med en utvendig lukkehylse (38) og en betjenlngshylse (84) som er låst sammen med denne. Under betjeningshylsen (84) finnes en åpningshylse (94). Åpningshylsen (94) blir mekanisk betjent av en nedpumpbar plugg i en plugg- drevet utførelse eller med en trykkforskjell som virker på åpningshylsen (94) i en hydraulisk betjent utførelse for å aktivisere åpningshylsen for å muliggjøre ekspansjon av pakningselemertet (134). En tilbake- slagsventil (72) hindrer tetningselementet' (134) i å trekke seg sammen. Etter at pakningen er ekspandert, blir ytterligere trykk tilført, noe som bryter en sprengplate (70) for å åpne en port (34) til brønnens ringrom over det tilsatte pakningselement (134). Sementering kan utføres gjennom denne port (34) og etter sementeringsoperasjonen føres en plugg i anlegg mot betjeningshylsen (84) for å bevege denne hylse (84) i den utvendige lukkehylse (38), slik at sementerings- porten (34) stenges. Etter fullført sementering kan anordnlngens sentrale komponenter bores ut som etterlater den utvendige lukkehylse som .permanent stenger sementeringsporten.
Patent NO-933739-L (NO)
Title: Trykksatt lukkeanordning
Inventor: LEWIS EDWIN C II
IPC: F16L37/113
Filed: 1993-10-18
Abstract: En lukning omfatter et par lukke-elementer (14, 15) som, når de er ført sammen inneholdes i en kropp (10) med et avtettet rom (18) derimellom, anordninger (16) for å fastholde elementene (14, 15) i kroppen (10) og anordninger (21, 22) forbundet med kroppen (10) for å innføre et trykkfluid i det avtettede rom (18) mellom elementene (14, 15) for å bevirke at disse trykkes fast mot kroppen (10) og holdeanordningen (16) for derved å låse elementene (14, 15) i kroppen (10).
Patent NO-933920-L (NO)
Title: Smaks-kamuflerte medikamenter og fremstilling derav
Inventor: WHEATLEY THOMAS A
IPC: A61K9/50
Filed: 1993-10-29
Abstract: Et smaks-kamuflert legemiddel i fast form slik som en aspirintablett e.l. hvori smaks-kamufleringen utgjør en tynn celluloseesterfilm dannet som tørket overtrekk av en vandig plastifisert celluloseesteroppslemming. Filmen utgjør ikke mer enn omtrent l prosentdel av det filmovertrukne medikåmentet.
Patent NO-934882-L (NO)
Title: Fungiside midler
Inventor: HALEY GREGORY JAY
IPC: C07C327/56
Filed: 1993-12-29
Abstract: Det er tilveiebrakt hydroksaminsyrer, og esterne og chelatene av disse, med strukturen OR eller X og anvendelse av dem for forebygging, bekjempelse eller lind- ring av sykdommer forårsaket av fytopatogen sopp. Det er videre tilveiebrakt blandinger og fremgangsmåter som omfatter disse forbindelser for beskyttelse av planter mot soppangrep og -sykdom.
Patent NO-940740-L (NO)
Title: Ekspandert konstruksjon
Inventor: GREGORY E J
IPC: B23K15/00
Filed: 1994-03-03
Abstract: Ekspandert konstruksjon for anvendelse ved fremstilling av varmevekslere eller -komponenter. I konstruksjonen inngår kanaler eller celler (8) som er frembragt ved elektronstråle- eller lasersveising av plater (l, 2), plassert side om side, av et materiale som deformeres mellom sveisesømmene, for opprettelse av ønskede kanal- eller cellemønstre. Hver kon- struksjon består av flere sjikt av hensiktsmessig sveisede og deformerte plater som er anordnet side ved side.
Patent NO-943645-L (NO)
Inventor: GRIFFITH RONALD CONRAD
IPC: A61P25/14
Filed: 1994-09-30
Abstract: (S)- alpha -phenyl-2-pyridineethanamine, and its pharmaceutically acceptable derivatives, are useful in the treatment of neurodegenerative disorders, and exhibit linear pharmacokinetics.
Patent NO-953352-L (NO)
Inventor: GERICKE ROLF
IPC: C07C279/10
Filed: 1995-08-25
Abstract: 2,4,5-Trisubstd. benzoic acid derivs. of formula (I) and their salts are new: R1 = A, CF3, CH2F, CHF2, C2F5, CN, NO2, halogen, ethynyl or XR4; R2 = CF3, S(O)nR6 or SO2NR4R5; R3 = CN, halogen, COA, CHO, CSNR7R8 or CONR7R8; Q = N=C(NH2)2, Cl, Br, OA, OCOA, OCOAr, OH or another reactively esterified OH gp. or nucleophilically substitutable leaving gp.; R4 = H, A, 5-7C cycloalkyl, 6-8C cycloalkylmethyl, CF3, CH2F, CHF2, CH2CF3, Ar or CH2Ar; R5 = H or A; or R4+R5 = 4-5C alkylene, opt. with a CH2 gp. replaced by O, S, NH, NA or NCH2Ar; R6 = A or Ar; R7, R8 = H, A, 1-10C alkanoyl or 7-11C aroyl; A = 1-6C alkyl; X = O, S or NR5; Ar = phenyl opt. substd. by 1-3 of A, OA, NR4R5, halogen or CF3; n = 1 or 2.
Patent NO-960743-L (NO)
Inventor: HADDADA HEDI
IPC: A61P35/00
Filed: 1996-02-23
Abstract: Cell compositions containing mononuclear phagocyte systems cells, and their use in cell therapy, e.g. adoptive immunotherapy, are disclosed.
Patent NO-961771-L (NO)
Title: Möbelkonstruksjon
Inventor: AAMODT JAHN
IPC: A47B/
Filed: 1996-05-02
Abstract: Møbelkonstruksjon (1), omfattende en bordplate (2), samt ben som med minst et parti derav strekker seg utenfor bordplatens ytterkant, og der nevnte ben er innrettet til å. bære et sitteredskap for minst én bruker av mobelkonstruksjonen,ved at sitteredskapet er valgfritt innstillbart i høyde, fortrinnsvis i trinn, langs nevnte ben, idet nevnte ben på to motsatte sider derav er utstyrt med en rekke av spor, der to overforhverandre liggende spor er beregnet for inngrep med en avlang spalte i sitteredskapet når dette fores til inngrep med benet.
Patent NO-970174-L (NO)
Title: 2-okso- og 2-tio-1,2-dihydrochinolinyl-oksazolidinoner
Inventor: HAEBICH DIETER
IPC: A61K31/41
Filed: 1997-01-15
Abstract: Det blir beskrevet 2-okso- og 2-tio-l,2-dihydrochinoli- nyl-oksazolidinoner med den generelle formel (I) (I), hvor A står for et oksygen- eller svovelatom, D står for hydrogen eller for cykloalkyl med 3 til 6 karbonatomer, eller rettkjedet eller forgrenet alkoksykarbonyl med opp til 4 karbonatomer, eller eventuelt substituert rettkjedet eller forgrenet alkyl eller alkenyl med opp til 9 karbonatomer, eller for eventuelt substituert rettkjedet eller forgrenet acyl med opp til 5 karbonatomer, eller for en av gruppene med formelene -( CT )jj-NR10r11 , -( C0)c-NR^2-C0-Nr13r14 _ -Nr15-S02R^^, r1'7r18-N-S02-, 51*^-5(0);, eller -C0-R20 , E og L er like eller forskjellige og står for hydrogen, karboksy, halogen, cyano, formyl, trifluormetyl, nitro eller rettkjedet eller forgrenet alkyl med opp til 4 karbonatomer, R^ står for azido, hydroksy, eller for en gruppe med formel -OR^l, O-SOaR^^ eller -KR^SrS"! ^ og deres salter og isomerer. Det blir dessuten beskrevet en fremgangsmåte for fremstilling av forbindelsene samt deres anvendelse i legemidler, spesielt i antibakterielle legemidler.
Patent NO-972992-L (NO)
Inventor: JOKINEN SIMO
IPC: C02F11/00
Filed: 1997-06-26
Abstract: PCT No. PCT/FI95/00717 Sec. 371 Date Aug. 18, 1997 Sec. 102(e) Date Aug. 18, 1997 PCT Filed Dec. 29, 1995 PCT Pub. No. WO96/20894 PCT Pub. Date Jul. 11, 1996The invention relates to a method for treating waste water sludge comprising at least one metal originating from a waste water treatment coagulant, and phosphorus and heavy metals in order to recover said at least one metal and phosphorus and to discharge said heavy metals. In this method said waste water sludge is acidified to dissolve metals contained in the sludge thereby yielding an acidified sludge solution containing at least 1% by weight of at least one metal to be recovered. In a first precipitation stage the pH of said acidified sludge solution is raised to precipitate at least one metal to be recovered as a phosphate, and thereafter the phosphate precipitate is separated, thereby leaving a solution comprising heavy metals. In a second precipitation stage the pH of said solution comprising heavy metals is raised and, if necessary, an appropriate chemical is added to precipitate heavy metals, and thereafter the precipitate is discharged.