baber/WOPTO huggingface dataset:
Patent IE-902061-L (IE)
Title: Organoaluminium electrolytes
IPC: C25C3/18
Filed: 1990-06-08
Abstract: The invention relates to organoaluminum electrolytes for the electrolytic deposition of high-purity aluminum, which are characterized in that they contain mixtures of organoaluminum complex compounds of the type MF . 2 AlR3 (A), wherein M represents potassium or mixtures of K with a maximum of about 15% by mole of sodium, as well as trialkylaluminum AlR3 (B) which has not been complexed to an alkali metal fluoride in a molar ratio of A : B of from 4:0.6 to 4:2, as well as a polyfunctional Lewis base of the type R min -OCH2CH2-OR sec (C) in a molar ratio of B : C of from 1:0.5 to 1:1. The organyl radicals R in A are ethyl groups (Et), methyl groups (Me) and iso-butyl groups (iBu) in a molar ratio of Et:Me:iBu as 3:m:n, wherein m and n are numerical values of between 1.1 and 0 and the sum (m+n) is from 0.75 to 1.4. As the solvent for said electrolytes there are used from 3 to 4.5 moles, relative to the amount of alkali metal fluoride employed, of an aromatic hydrocarbon which is liquid at 0 DEG C or a mixture of such hydrocarbons. The invention further relates to a process for the electrolytic deposition of high-purity aluminum by using said electrolytes.
Patent IE-882065-L (IE)
Title: Duct testing
IPC: F17D5/02
Filed: 1988-07-07
Abstract: A technique for detecting faults, blockages or holes, in a duct(6). A burst of compressed gas is injected into the duct and the decay of the pressure pulse monitored by a transducer at the gas burst launch end of the duct. A reference decay pressure that would be expected for a perfect duct is generated and the monitored decay is compared with the reference decay for deviation. A perforated duct exhibits greater pressure decay and a blocked duct less pressure decay than a perfect duct. The time occurrence of the deviation indicates the location of the fault. The signal level indicative of the pressure after a predetermined interval may also be used to measure the air friction or blowability within the duct.
Patent IE-892276-L (IE)
Title: Compounds
IPC: C07D417/04
Filed: 1989-07-13
Abstract: A compound of formula (I) or a pharmaceutically acceptable salt thereof, <CHEM> in which, R1 is hydrogen or lower alkyl; R2 is hydrogen or lower alkyl; R4 and R4 together form a group =N-Ra, or =CRaRb, where Ra is hydrogen, lower alkyl, aryl, aryloxy, lower alkylcarbonyl, arylcarbonyl, aryloxycarbonyl, lower alkoxy, lower alkoxy carbonyl, lower alkoxy carbonyl alkoxy, lower - thioalkoxy, hydroxy, nitrile, heterocyclyl, or -NRcRd, where Rc is hydrogen, lower alkyl, cycloalkyl, aryl, aralkyl, lower alkylcarbonyl, arylcarbonyl, aminocarbonyl, aminothiocarbonyl, aminoiminocarbonyl, lower alkoxycarbonyl, lower alkoxythiocarbonyl, aryloxycarbonyl, thiocarbonyl, nitrile, carboxyl, heterocyclyl or heterocyclylcarbonyl, and Rd is hydrogen or lower alkyl; Rb is hydrogen, lower alkyl, aryl, lower alkylcarbonyl, lower alkoxycarbonyl, nitrile or nitro; or R4 is -NH-Ra, in which Ra is as defined above, and R4 min is hydrogen or lower alkyl; each of R3 and R5 is independently hydrogen, lower alkyl, aryl, lower alkylcarbonyl, arylcarbonyl, aralkylcarbonyl, heterocyclylcarbonyl, optionally substituted aminocarbonyl, lower alkoxycarbonyl or aryloxycarbonyl; R6 is hydrogen, lower alkyl or halogen; and A is sulphur, oxygen, -NH- or -CH2-, is useful for the treatment of heart disease.
[EP0351213A2]
Patent IE-46007-L (IE)
Title: Salts of 2-phenyl-5 hydroxy-alkanoic acids
IPC: C07C253/00
Filed: 1977-12-06
Abstract: The present invention relates to novel analeptic drugs, as well as to processes for their preparation. 
[FR2373281A2]
Patent IE-892638-L (IE)
Title: A new antibiotic, mersacidin, a process for the preparation¹thereof and the use thereof as a pharmaceutical
IPC: C12P21/04
Filed: 1989-08-16
Abstract: Mersacidin, a cyclic peptide of the formula I   <IMAGE> (I) <IMAGE> <IMAGE>  has antibiotic activity.
Patent IE-812757-L (IE)
Title: Phenoxypropionic acid derivatives.
IPC: C07D213/643
Filed: 1981-11-25
Abstract: Oxime ester compounds of the formula <IMAGE> I wherein A is one of the groups <IMAGE> wherein B is -CH= or nitrogen and R1 is one of the groups <IMAGE> wherein R2-R7, m and n are as hereinafter set forth, processes for their preparation, herbicidal compositions containing these compounds as the active ingredient and methods of use of the herbicidal compositions are disclosed.
[US4435207A]
Patent IE-812989-L (IE)
Title: 2-acylaminomethyl-1,4-benzodiazepines
IPC: C07D243/16
Filed: 1981-12-18
Abstract: Novel 2-acyl amino methyl-5-phenyl-1H-2,3-dihydro-1,4-benzo diazepine compounds of the following Formula I    <IMAGE>  I  which have valuable pharmacological properties are provided. In said Formula I the acyl group -CO-R3 represents a benzoyl group or a phenyl alkanoyl group which may be unsubstituted or mono- or di-substituted in the phenyl ring. The substituent R1 in said compounds indicates lower alkyl, lower alkenyl, or cyclopropyl methyl, and the substituent R2 indicates hydrogen, lower alkyl, or lower alkenyl, while the substituent R6 indicates hydrogen, halogen, lower alkyl, lower alkoxy, hydroxyl, lower alkylthio, nitro, trifluoro methyl, cyano, amino, mono- or di-lower alkyl amino, lower mono-alkanoyl amino, lower N-alkyl-N-alkanoyl amino, or lower alkanoyloxy, and the substituent R7 indicates hydrogen, halogen, lower alkyl, lower alkoxy, hydroxyl, or lower alkanoyloxy, whereby R6 and R7, when attached to adjacent carbon atoms, may form together the methylene dioxy or the ethylene dioxy group. The substituents R8 and R9 designate the same substituents as indicated for the substituents R6 and R7. The compounds of Formula I have a surprising analgesic activity.
Patent IE-893015-L (IE)
Title: Pharmaceutically active combination
IPC: A61K38/58
Filed: 1989-09-20
Abstract: There is provided a pharmaceutical composition comprising as component A a plasminogen activator and as component B hirudin together with a pharmaceutically acceptable carrier. The pharmaceutical composition can be used for the prophylaxis and therapy of thrombosis or diseases caused by thrombosis.
Patent IE-883452-L (IE)
Title: A dielectric waveguide
IPC: H01P3/16
Filed: 1988-11-18
Abstract: A dielectric waveguide for the transmission of electromagnetic waves is provided comprising a core (12) of a plastic material and having one or more layers of polytetrafluoroethylene (PTFE) cladding (14) overwrapped around the core. The core material is polystyrene, polychlorotrifluoroethylene, polyethylene, polypropylene, polysulfone or polycarbonate.
[EP0318198A1]
Patent NO-812889-L (NO)
Inventor: RAIKAMO SEPPO
IPC: B63B3/00
Filed: 1981-08-26
Abstract: PCT No. PCT/FI80/00014 Sec. 371 Date Jul. 27, 1981 Sec. 102(e) Date Jul. 27, 1981 PCT Filed Dec. 22, 1980 PCT Pub. No. WO81/01823 PCT Pub. Date Jul. 9, 1981.A sliding top for a boat includes forward and rearward portions of greater length than the spacing between a cabin and cockpit of the boat, the sliding top being movable between a forward position in which the available space of the cockpit is increased, and a rearward position in which the available space within the cabin is increased.
Patent NO-841988-L (NO)
Inventor: RANA MAHENDRASINH DOLATSINH
IPC: C22C29/00
Filed: 1984-05-18
Abstract: A precisely defined steel alloy particularly suited to gas storage cylinder manufacture, and a gas storage cylinder manufactured thereof which exhibits remarkably improved performance over conventional gas storage cylinders.
Patent NO-852433-L (NO)
Inventor: FURUSAWA MITSURU
IPC: C12N15/86
Filed: 1985-06-17
Abstract: A method of producing useful substances which comprising propagating in cultured cells or in a host a recombinant Bombyx mori nuclear polyhedrosis virus (BmNPV) DNA is disclosed. The BmNPV DNA is produced by recombination with a double-stranded DNA containing (i) a 5'- upstream BmNPV DNA fragment originally occurring upstream from the structural gene coding for the production of polyhedral protein and also including the promotor region for the structural gene, (ii) a translational start codon and (iii) a gene coding for the production of a useful substance exogenous to the virus, with or without (iv) a 3'-downstream BmNPV DNA fragment originally occurring downstream from the structural gene coding for the production of polyhedral protein.
Patent NO-862186-L (NO)
Inventor: CHASTAN-BEGNIS LUCIEN
IPC: C02F1/40
Filed: 1986-06-02
Abstract: It comprises at least one channel (12) which extracts a stream of water at the front of the apparatus, subsequently ejecting it at the rear after cleaning it, preferably by way of two divergent channels (18). The circulation of the stream of water in the channel (12) is ensured by at least one screw (20) driven by a preferably hydraulic motor. 
<IMAGE>
Patent NO-885152-L (NO)
Inventor: HRIB NICHOLAS J
IPC: A61P25/18
Filed: 1988-11-18
Abstract: There are disclosed compounds of the formula, <CHEM>  where n is 0 or 1; A is <CHEM> where X, Y, Z, U, V, W, Q, S and T are each hydrogen, halogen, loweralkyl, hydroxy, nitro, loweralkoxy, amino, cyano or trifluoromethyl; m is 1 or 2; R1 and R2 are independently hydrogen, loweralkyl or aryl, or alternatively R1 + R2 taken together with the carbon atom to which they are attached form a cyclopentane, cyclohexane, cycloheptane, pyran, thiopyran, pyrrolidine or piperidine ring; R3 and R4 are independently hydrogen or loweralkyl, or alternatively R3 + R4 taken together with the carbon atom to which they are attached form a cyclopentane, cyclohexane, cycloheptane, pyran, thiopyran, pyrrolidine or piperidine ring, the term aryl signifying an unsubstituted phenyl group or a phenyl group substituted with 1, 2 or 3 substituents each of which being independently loweralkyl, loweralkoxy, hydroxy, halogen, loweralkylthio, cyano, amino or trifluormethyl, and a process for their preparation. The compounds are useful as antipsychotic, analgesic, anticonvulsant and anxiolytic agents.
Patent NO-890566-L (NO)
Inventor: BERNARDINIS SILVIA DE
IPC: C07C50/38
Filed: 1989-02-09
Abstract: 4-Demethoxy-daunomycinone I: <CHEM> the known aglycone of 4-demethoxy-daunorubicin, is prepared by protecting the 13-keto group of 4-demethyl-daunomycinone, sulfonylating the 4-hydroxy group, reacting the sulfonylated compound with an amine, removing the amino protecting group from the resultant 4-demethyl-4-(protected amino)-13-dioxolanyl-daunomycinone, diazotising the thus-freed 4-amino group and reducing under mild conditions the resulting diazonium compound.
Patent NO-893844-L (NO)
Inventor: PERCEBOIS ALAIN ANDRE PIERRE
IPC: E02D29/14
Filed: 1989-09-27
Abstract: Locked manhole cover of the type comprising a frame 1 equipped with an inner radial flange 14 and a buffer 3 resting on the said flange by means of an elastic mounting 2, having a general C-shaped cross-section, which fits over the said flange 14. The circular, closed and continuous mounting has in its lower part at least one inclination 19 which comes to face fastening strips 26 of which the buffer 3 is equipped. Application to the locking of manhole covers. <IMAGE>
Patent NO-893979-L (NO)
Inventor: KENNEDY CHRISTOPHER ROBIN
IPC: B22F3/26
Filed: 1989-10-05
Abstract: The present invention relates to the formation of a metal matrix composite body by the spontaneous infiltration of a molten matrix metal (6) into a three-dimensionally interconnected material (8) Moreover, the three-dimensionally interconnected material (8) may contain filler material within at least a portion of its porosity. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material and/or a three-dimensionally interconnected material(8) and/or a matrix metal at least at some point during the process, which permits molten matrix metal(6) to spontaneously infiltrate the three-dimensionally interconnected material (8) and any filler material contained within at least a portion of the porosity of the three-dimensionally interconnected material.
Patent NO-894254-L (NO)
Inventor: BRANDMAN HAROLD A
IPC: C07C323/60
Filed: 1989-10-25
Abstract: Useful as antimicrobial agents are  beta -substituted  alpha -halo-acrylonitriles of formula (I), wherein X represents chlorine, bromine or iodine and R represents a lower alkyl, aryl, aralkyl, heterocyclyl, or thiocarbonyl group. These compounds may be incorporated in aqueous compositions subject to spoilage by microbial growth to control such growth. All the compounds apart from  alpha -bromo- beta -methylthio-acrylonitrile and the corresponding  beta -phenylthio compound are novel and may be produced (in a final reaction step) by nucleophilic-type displacement of the  beta -halogen atom X of an appropriate  alpha , beta -dihalo-acrylonitrile X-CH=CX(CN) (IV) using a sulfur anion RS< THETA > derived from the appropriate mercaptan RSH.
Patent NO-900121-L (NO)
Title: Probursin.
Inventor: AUDHYA TAPAN
IPC: C07K/
Filed: 1990-01-10
Abstract: Et flerfunksjonelt mammalsk peptidprobursin isolert i renset form, fremstilt syntetisk eller rekombinant kan bli anvendt terapeutisk i behandling av imraunsykdommer og tumorhemming.
Patent NO-900974-L (NO)
Inventor: PAQUETTE MAURICE
IPC: B60S3/04
Filed: 1990-03-01
Abstract: The washing procedure consists in pre-heating water which then passes into a pump serving, on the one hand, to fill a storage reservoir A and, on the other hand, to supply a duct which passes through a pump with a stage discharging the fluid at medium pressure into a separator provided with two outlets, one of which delivers softened rejected water and the other pure water. The procedure also comprises an arrangement which comprises a reservoir vessel supplying a pump which fills a tank A and supplies a hydraulic circuit managed by control and conditioning apparatuses, the said circuit passing through a pump which discharges the fluid into a separator provided with two separate outlets which allows water of different compositions to pass through, supplying storage tanks B-C serving for the washing of a vehicle. <IMAGE>
Patent NO-921744-L (NO)
Inventor: JOSHI ASHOK V
IPC: G01N27/417
Filed: 1992-05-04
Abstract: The invention is a ceramic solid electrolyte based electrochemical oxygen concentrator cell and the method for fabricating said cell. The cell is based on a doped cerium oxide ceramic solid electrolyte and lanthanum strontium cobaltite ceramic electrodes.
Patent NO-932672-L (NO)
Title: Monokloane antistoffer mot elam-1 og anvendelser derav
Inventor: WAYNER ELISABETH
IPC: A61K47/48
Filed: 1993-07-23
Abstract: Blandinger og fremgangsmåter er tilveiebragt for inhiber- ing av inflammatoriske og andre sykdomsresponser formidlet av ELAM-1. Spesielt tilveiebringer den foreliggende oppfinnelse immunglobuliner som selektivt binder funksjonelle epitoper på ELAM-1 og blokkerer tilhefting av leukocytter til aktiverte endotelceller både in vitro og in vivo.
Patent NO-951879-L (NO)
Title: Polymersammensetning med forbedret termisk oksiderende stabilitet og fremgangsmåte til dens fremstilling
Inventor: WILLCOX KENNETH WAYNE
IPC: C08L23/18
Filed: 1995-05-11
Abstract: Stabilisert sammensetning som innbefatter et poly- olefin, askorbinsyre og en eller flere tokoferoler, og fremgangsmåte for å fremstille denne sammenset- ningen. Sammensetningen har forbedret termisk oksiderende stabilitet.
Patent NO-954690-L (NO)
Title: Intelligent akkompagnementsapparat og fremgangsmåte
Inventor: PAULSON JOHN W
IPC: G10H1/00
Filed: 1995-11-20
Abstract: System og fremgangsmåte for å tolke anmodninger og utførelse av en instrumental solist angitt i musikkspråk og innenfor en bestemt publisert musikkutgave som solisten bruker for å styre fremføringen av et digitalisert musikkakkompagnement. Lydforløp og deres tilknyttede attributter blir utledet fra solistfremføringen og numerisk kodet. Tonehøyde, varighet og hendelsestype av de kodede lydhendelsene blir så sammenlignet med en ønsket sekvens av fremføringspartituret for å bestemme om en sampassing forefinnes mellom solistfremføringen og fremføringspartituret. Dersom en sampassing forefinnes mellom solistfremføringen og fremføringspartituret instruerer systemet en musikksyntetiserermodul for å tilveiebringe et hørbart akkompagnement for solisten. Systemet kan tilveiebringe et akkompagnement for en valgbar tidslengde dersom solisten tilsiktet eller utilsiktet avviker fra partituret.
Patent NO-962015-L (NO)
Title: Pyron-derivater som protease-inhibitorer og antivirus-midler
Inventor: DOMAGALA JOHN MICHAEL
IPC: A61K31/352
Filed: 1996-05-15
Abstract: Foreliggende oppfinnelse vedrører nye tri- og tetra- substituerte pyroner og relaterte strukturer som potent inhiberer den HIV-aspartylprotease som blokkerer HIV- infeksiøsitet. Pyron-derivatene er anvendelige ved utviklingen av terapier for behandling av bakterielle og virale infeksjoner og sykdommer, inklusivt AIDS. Foreliggende opp- finnelse er også rettet mot fremgangsmåter for syntese av multifunksjonaliserte pyroner og av relaterte strukturer.
Patent NO-963002-L (NO)
Inventor: LUFT GERHARD
IPC: C08F2/02
Filed: 1996-07-18
Abstract: PCT No. PCT/EP95/00381 Sec. 371 Date Aug. 5, 1996 Sec. 102(e) Date Aug. 5, 1996 PCT Filed Feb. 2, 1995 PCT Pub. No. WO95/21200 PCT Pub. Date Aug. 10, 1995For the production of polyolefins by polymerization of  alpha -olefins in the presence of a peroxide catalyst a catalyst system is used as the catalyst which is composed of the components (A) and (B) in which: (A) denotes at least one compound selected from the group of organoaluminium compounds of formula AlR3 in which R represents an alkyl, alkenyl, aryl or cycloalkyl group; and (B) denotes at least one organic peroxide.\!
Patent NO-964496-L (NO)
Inventor: AASTROM JAN
IPC: B60F1/04
Filed: 1996-10-23
Abstract: A vehicle (1) which can be driven on both a road surface and on a railroad track includes a wheel chassis (1a) having a front steerable wheel axle (2a) and a rear-wheel axle (3a), both of which carry road-running wheels (2; 3), and a front and a rear rail-wheel unit (5; 7) located in front of the front wheels (2) and behind the rear wheels (3) respectively. One of the units is pivotal about a vertical axle (8) and each of the units (5; 7) includes an axle (4a; 6a) provided with a respective rail-running wheel (4; 6). The units are vertically movable, so as to enable the rail-running wheels (4; 6) to be brought into engagement with the railroad track (10). The rail-wheel unit (7) which is pivotal about a vertical axle (8) is provided with a support element (15) which can be swung to a position parallel with the rails (10a; 10b) of the track (10) and which is provided with an axle (16a) carrying a rail-running wheel (16) for engagement with the rail when driving the vehicle onto the track. The pivotal rail-wheel unit (7) provided with the support element (15) can be fixed in its position parallel with the track (10) and the longitudinal axis of the vehicle. A power unit (18) is able to engage the rail-wheel axle (6a) on the rail-wheel unit (7) carrying the support element. The rail-running wheel (16) of the support element (15) therewith coacts with the rail (10a) that lies proximal to the vehicle-mounting side of the track.
Patent NO-970121-L (NO)
Title: Komposittgulvkonstruksjon
Inventor: STROEMBERG JAN
IPC: E04B5/40
Filed: 1997-01-10
Abstract: Oppfinnelsen angår en komposittgulvkonstruksjon som innbefatter en permanent støpeform og betong (90) støpt på denne, idet støpeformen er oppbygget av et antall sandwichelementer (1). Hvert sandwichelement (1) innbefatter en topp-plate (2), en kjerne (3) og en bunnplate (4). Bunnplaten (4) har en del (11) som stikker ut fra kjernen (3) langs de langsgående sidekantene av platen, og den utstikkende delen (11) innbefatter organer (13) for inngrep med støpte betongen (90).
Patent NO-975025-L (NO)
Inventor: DURCHSCHLAG GERALD
IPC: B61L5/04
Filed: 1997-10-31
Abstract: PCT No. PCT/AT96/00087 Sec. 371 Date Feb. 9, 1998 Sec. 102(e) Date Feb. 9, 1998 PCT Filed May 2, 1996 PCT Pub. No. WO96/34786 PCT Pub. Date Nov. 7, 1996A device for setting railway switches includes a plurality of interlinked hydraulic switching devices (6) connected to a separate reversible hydraulic drive unit in a manner offset in the longitudinal direction of the rails, wherein the working volumes of the hydraulic cylinder piston aggregates (6) are connected to driving movement in same direction. The pistons (20) or plungers (11) include push-open valves (18) for travel limitation.
Patent NO-980930-L (NO)
Title: Arrangement av kontaktpar for kompensering for nµr-ende krysstale
Inventor: GWIAZDOWSKI MICHAEL
IPC: H04B15/00
Filed: 1998-03-04
Abstract: Anordning av minst to kontaktpar (1,2; 3,4) for å kompensere nærkrysstale, idet det fra et kontaktområde (5) er utformet avbøyd en eller begge kontaktene (l, 2 hhv. 3, 4) til et kontaktpar (l, 2; 3,4) enkelt eller flere ganger, slik at kontaktene (1,2 hhv. 3,4) deretter forløper parallelt og kontaktene (l, 3 hhv. 2, 4) til forskjellige kontaktpar er anbragt i en avstand i forhold til hverandre, slik at det tilveiebringes krysstale i motsatt fase i forhold til kontaktområdet (5).
Patent NO-985039-L (NO)
Title: Alkyl-4-silyl-fenoler og estere derav som antiatherosklerotiske midler
Inventor: BUSCH STEVEN JEFFREY
IPC: A61K31/695
Filed: 1998-10-29
Abstract: Foreliggende oppfinnelse angår forbindelser av formel (1) R/ F»3 Z-A- » il-R7 Re (D hvori R! og R6 er hver uavhengig C:-C6- alkyl; R2, R3 og R4 er hver uavhengig hydrogen eller C^-Cj-alkyl; R er hydro- gen eller -C(O)-(CH2)B,-Q, hvori Q er hydrogen eller -COOH og m er et helt tall på l, 2, 3 eller 4; Z er en tio-, oksy- eller metylengruppe; A er en Ci-C^alkylengruppe; R5 og R7 er hver uavhengig en C^-Cj-alkyl eller -(CH2)n-(Ar), hvori n er et helt tall på 0,1,2 eller 3; og Ar er fenyl eller naftyl som er usubstituert eller sub- stituert med en til tre substituenter valgt fra gruppen bestående av hydrok- sy, metoksy, etoksy, halogen, trifluor- metyl, C^-Cj-alkyl eller -NR8R,, hvori R8 og R9 hver uavhengig er hydrogen eller Cj-Cj-alkyl; forutsatt at når R2 og minst en av R5 eller R7 er Cj-Cj-alkyl og Ar ikke er substituert med trifluor- metyl eller -NR8R,, er R -C(0)-(CH2).-Q; eller et farmasøytisk akseptabelt salt derav; som er anvendbare for behandling av aterosklerose og kroniske, inflam- matoriske sykdommer; for inhibering av cytokinfremkalt ekspresjon av VCAM-1 og/eller ICAM-1; for inhibering av per- oksidasjon av LDL-lipid; for nedsett- else av plasmakolesterol; og som anti- oksiderende, kjemiske additiver som er anvendbare for å forhindre oksidativ svekkelse i organiske materialer.
Patent NO-986105-L (NO)
Title: Poly N-cycliske aromatiske ligander bundet til bµrere av faststoff for fjerning og konsentrering av ioner fra l°sninger
Inventor: BRUENING RONALD L
IPC: B01J20/32
Filed: 1998-12-23
Abstract: Fremgangsmåte og materiale (preparat) for konsentrasjon og fjernelse av ønskede metallioner fra en kildeoppløsning ved å bringe oppløsningen i kontakt med en N-cyklisk aromatisk hydrokarbonholdig ligand kovalent bundet til en fast bærer gjennom en hydrofil avstandgruppering hvor materialet har formel SS-A-X- (L)n, hvori SS er en fast bærer, A er en kovalent bindingsmekanisme, X er en hydrofil avstandsgruppering, L er en N-cyklisk aromatisk hydrokarbonholdig ligandgruppe og n er et helt tall fra 1-6. X eller L kombinert vil ikke inneholde mer enn to aminnitrogenatomer. Det vil foretrukket være minst fire N-cykliske grupper til stede hvorav pyridin, pyrimidin, pyrazin, imidazol, kiolin, isokinolin, naftyridin, pyridopyridin, fenantrolin er representative. De ønskede ioner i kildeoppløsningen bindes til ligandene og blir deretter separert ved at det ligandholdige materiale bringes i kontakt med et mindre volum av en mottakende oppløsning som fjerner de bundende ioner for gjenvinning i konsentrert form i det mindre volum av den mottakende oppløsning.