baber/WOPTO huggingface dataset:
Patent NO-863564-L (NO)
Inventor: DWEK RAYMOND ALLEN
IPC: C07K9/00
Filed: 1986-09-05
Abstract: A preparative scale method for the isolation of unreduced oligosaccharides of glycoproteins and glycohormones having a N-linked oligosaccharide structure is disclosed. The method employs hydrazin­olysis of the glycoprotein or glycohormone under reaction conditions to cause cleavage at the N-linked sites, producing a mixture having as a major component a de-N-acetylated hydrazone derivative of the oligo­saccharides, followed by N-acylation of the hydrazone derivative, acid-catalysis of the hydrazone derivative to produce unreduced oligosaccharides, and subjecting the resulting unreduced oligosaccharides to cellulose column chromatography to remove contaminants and to recover the unreduced oligosaccharides.
Patent NO-874994-L (NO)
Inventor: HIRSEKORN FREDERICK JOHN
IPC: C08G59/42
Filed: 1987-12-01
Abstract: The invention is concerned with B Stageable thermosettable compositions capable of producing a thermoset having a high service temperature comprising at least one polyepoxide and at least one linear anhydride monomer capable of forming a cyclopolymer in situ. The composition is useful in a two stage process; first to form a storage stable, flowable thermoplastic B stage intermediate by the free radical initiated vinyl polymerization of the linear anhydride in the liquid composition to a cyclic polymer and secondly to react the cyclic polymer with the poly epoxide to form a crosslinked high service temperature thermoset useful in the preparation of laminates, such as printed circuit boards, adhesives, and encapsulants.
Patent NO-890118-L (NO)
Inventor: CHUANG JO-YU
IPC: E21B17/042
Filed: 1989-01-11
Abstract: A screw structure (10) is provided for male and female threads (14) having at least one thread (14) extending helically along a cylindrical support (12) member in spaced thread turns. A root portion (22) extends between adjacent thread (14) turns and has a curvature defined by a portion of an ellipse (24) for providing improved stress reduction during periods of severe loading.
Patent NO-914725-L (NO)
Inventor: BLAKE JAMES
IPC: C07K1/107
Filed: 1991-11-29
Abstract: Peptides immunoreactive with antibodies to native proteins, and which have at least two cysteine residues that contribute to mimicking an epitope of the protein, are prepared with the cysteine thiol groups protected. When deprotected, the peptides have enhanced immunoreactivity. The peptides are particularly useful for detecting antibodies or antigens associated with retroviruses, including the clinically important lymphotropic retroviruses HIV-1, HIV-2, HTLV-I, and HTLV-II.
Patent NO-915111-L (NO)
Title: Blandeskrue-opphengning for en konisk blandebeholder
Inventor: SCHROEER JOHANNES DOMINICUS
IPC: B01F7/02
Filed: 1991-12-27
Abstract: En blandeinnretning er forsynt med en konisk blandebeholder (1) og med en blandeskrue (4) hvis øvre ende er dreibart ppphengt i en svingarm, og hvis nedre ende i det minste i blandeskruens (4) radialretning er understøttet i. beholderen (1) ved hjelp av et støtte-eller bæreelement (12) som ikke er for-bundet med denne i skruens (4) rota-sjonsretning og som er opphengt konsent-risk i forhold til blandebeholderen (1), idet skruens (4) nedre ende og bæreelementet (12) er forsynt med samvirkende flater som hviler direkte mot hverandre. For å redusere friksjon mel-lom de nevnte flater, er det tilveie-brakt en anordning for å bringe bæreelementet (12) til å rotere med en sådan rotasjonshastighet at de samvirkende flater av bæreelementet (12) og blande-skruen (4) ikke eller nesten ikke slurer i forhold til hverandre.
Patent NO-922864-L (NO)
Title: Fremgangsmaate til fremstilling av pradimicinantibiotika ved fermentering
Inventor: FURUMAI TAMOTSU
IPC: C12P29/00
Filed: 1992-07-20
Abstract: Det omtales en fremgangsmåte til fremstilling av BMY-28960 og desxylosyl BMY-28960 ved fermentering, og en ny BMY-28960-produserende organisme som hører til slekten Actinomadura og som har betegnelsen stamme AB 1236 (ATCC 55208).
Patent NO-923921-L (NO)
Title: Avstandsholderramme for isolerforglassing
Inventor: BREDE PETER
IPC: E06B5/00
Filed: 1992-10-09
Abstract: Oppfinnelsen vedrorer en avstandsholderramme for isolerfor-glassing bestående av rammeformet rundtgående rorformede staver (l, 2, 3, 4) og innenfor rammen anordnede sprosser (9, 10, 11, 12) som via forbindelsesorganer (14, 18, 19, 21) på frontsidene er forbundet med rammestavenes (1, 2, 3, 4) lang-side, hvorved forbindelsesorganene (14, 18, 19, 21) omfatter knivdeler (14) som rager frem foran sprossene og griper inn i rammestavene, eller hvorved forbindelsesorganene omfatter stifter som er satt fast inn i sprossene og med en spissende og minst en mothake griper inn i rammestavene.
Patent NO-931281-L (NO)
Inventor: BAUM JONATHAN SHEFFIELD
IPC: C07C255/39
Filed: 1993-04-02
Abstract: The four isomer compound derived from racemic cis/trans-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid and (S)(cyano)(3-phenoxyphenyl) methanol is twice as effective as cypermethrin against certain insect species, but quite unexpectedly is significantly less toxic to mammals and certain species of fish at rates giving commercial control of target crop insects.
Patent NO-931641-L (NO)
Title: Snorlaas
Inventor: MEIER TERRENCE P
IPC: A44B99/00
Filed: 1993-05-05
Abstract: En snorlås for sikker holding av en fleksibel snor, trekkbånd eller liknende i en valgt stilling, omfatter en stem-peldel, en kompresjonsfjær, en holdering og et hus. Det er en anordning for først å holde stempelsubenheten i en for-montert stilling med fjæren sammenpres-set, slik at hullene i stempeldelen og huset lett kan bringes på linje for innsetting av en snor. Når snoren er trædd gjennom de innrettede hullene, presses stempelet nedover og utløses slik at fjæren kan utvide seg og tvinge stempelet til å bevege seg aksielt opp-over, og dermed låse snoren mellom stempeldelen og huset.
Patent NO-934261-L (NO)
Inventor: JALONEN HARRY
IPC: A61K9/70
Filed: 1993-11-25
Abstract: PCT No. PCT/FI92/00166 Sec. 371 Date Nov. 12, 1993 Sec. 102(e) Date Nov. 12, 1993 PCT Filed May 27, 1992 PCT Pub. No. WO92/21334 PCT Pub. Date Dec. 10, 1992.This invention relates to a transdermal preparation comprising a therapeutically active compound of the formula:    <IMAGE>  (I)  or   <IMAGE>  (II)  where R1, R2, and R3, which can be the same or different are H, CH3, C2H5 or Cl; X is CH=CH or (CH2)n where n is 1 to 3 or X is -C(OR5)H- where R5 is methyl or ethyl; and R4 is hydrogen or a straight alkyl of 1 to 4 carbon atoms. The transdermal administration of the compounds can be accomplished by preparations in the form of ointments, emulsions, lotions, solutions, creams or transdermal patches.
Patent NO-942844-L (NO)
Inventor: LIND STEFAN
IPC: E04F13/26
Filed: 1994-07-29
Abstract: The invention proposes a double connector, especially for fillet-connection of two panels consisting of stone, marble or the like, which comprises a sleeve-type connecting piece (1) with two mutually opposite pin parts (2, 3) which engage in bores (13) of the panels (14, 18) to be connected and can each be connected to an anchoring element (4, 5) which can be fixed in the panels. In order, in addition to simple assembly, also to permit a high capacity for absorbing tensile and compressive forces, at least one of the two anchorage elements (4, 5) is a conical bolt (6), of which the bolt part is provided with a collar (9) engaging into a corresponding undercut (15) of the slit pin part (2, 3). By means of the end side of the pin part (2, 3), upon pushing onto the conical bolt (6), an expansion element (7) is braced in the bore (13) of the panel (14, 18). <IMAGE>
Patent NO-943332-L (NO)
Title: System og fremgangsmåte ved monopolar og bipolar elektrolysator
Inventor: LATELLA AURELIO
IPC: H01H9/54
Filed: 1994-09-09
Abstract: Kortslutnlngskretssystem og fremgangsmåte for forbl- føring av en elektrolysator (lOc) ved flere monopolare eller blpolare elektrolysatorer l en elektrolysekrets. Systemet innbefatter strømforsynlngslnnretning for å mate elektrolysestrøm til elektrolysatorene, en forbiføringsbryterlnnretning (18) for forbiføring av elektrolysatoren og innretning for å styre og avbryte den elektriske strømmen tilført elektrolysatorene i det minste i en tid tilstrekkelig til å tillate kort- slutning av elektrolysatoren (lOc) som skal bli forblført uten at operasjonstilstanden til de øvrige elektrolysatorene påvirkes merkbart.
Patent NO-944113-L (NO)
Inventor: JOHNSON DONALD A
IPC: A61K9/00
Filed: 1994-10-28
Abstract: PCT No. PCT/US93/03856 Sec. 371 Date Oct. 27, 1994 Sec. 102(e) Date Oct. 27, 1994 PCT Filed Apr. 30, 1993 PCT Pub. No. WO93/21923 PCT Pub. Date Nov. 11, 1993A dry hydrated cephalosporin, e.g. ceftibuten having about 7 to 14% by weight of water, powder formulation, pharmaceutical compositions in the form of an oral suspension dosage form and a method of making the dry powder formulations are disclosed.
Patent NO-950551-L (NO)
Title: Fremgangsmåte ved stöping av vegg
Inventor: SELVAAG OLE GUNNAR
IPC: E04G/
Filed: 1995-02-14
Abstract: Ved en fremgangsmåte for støping av en vegg (13) blir en kjerne av armerte isolasjonselementer (5) forsynt med dekksjikt (12) av betong. Dekksjiktene (12) påføres ved utstøping mot en forskaling (8) som mon-teres trinnvis i høyderetningen, idet utstøpingen også skjer trinnvis og fortrinnsvis etter at betongen i det foregående trinn har begynt å stivne. Det er også vist et for bruk i fremgangsmåten velegnet isolasjonselement (5) som har en kjerne (14) av isolasjonsmateriale, fortrinnsvis skumplast eller mineralull, og som på begge sider er forsynt med armeringsnett (15) som presses mot kjernen (14) av strekkorganer (17) under mellomkomst av avstandsstykker (16).
Patent NO-955062-L (NO)
Title: Rörledning
Inventor: SMEDAL ARNE
IPC: F16L11/11
Filed: 1995-12-13
Abstract: Rørledning for transport av hydrokarboner i sjøen og innrettet til i det minste delvis å befinne seg på forholdsvis stor vanndybde, omfattende flere forskjellige lag (1,2,3) som tilsammen danner rørveggen i rørledningen, nemlig - et indre væske- og gasstett lag (3) av korrugert metall, - et utenforliggende styrkebærende lag (1) av et ikke-metallisk materiale og med en vesentlig grad av fleksibilitet, og - et mellomliggende trykkoverførende lag (2) av et materiale med vesentlig lavere elastisitetsmodul enn det korrugerte metall, anordnet mellom det indre lag (3) og det styrkebærende lag (1). Det er også beskrevet en fremgangsmåte for fremstilling av rørledningen.
Patent NO-963776-L (NO)
Title: (4,4-Difluorbut-3-enyltio)-substituerte heterocykliske eller karbocykliske ringforbindelser med disinfiserende virkning
Inventor: TURNBULL MICHAEL
IPC: C07D213/85
Filed: 1996-09-09
Abstract: Forbindelse med formel (I), eller et salt derav, hvor n er O, l eller 2, og R er en gruppe med formel (II) til (XXI), hvor S (O) CH2CH2CH=CF2 -gruppen er i det minste en av R1 (når den er bundet til et karbonatom) , R2, R3, R4, R5 eller R6, R1 (når den er bundet til et karbonatom), R2, R3, R4, R5 og R6, hver, uavhengig, er hydrogen, eventuelt substituert alkyl, eventuelt substituert alkenyl, alkynyl, cykloalkyl, alkylcyk- loalkyl, alkoksy, alkenyloksy, alkynyloksy, hydroksyalkyl , alkoksyalkyl, eventuelt substituert aryl, eventuelt substi- tuert arylalkyl, eventuelt substituert heteroaryl, eventuelt substituert heteroarylalkyl, eventuelt substituert aryloksy, eventuelt substituert arylalkoksy, eventuelt substituert aryloksyalkyl , eventuelt substituert heteroaryloksy, eventuelt substituert heteroarylalkoksy, eventuelt substituert hetero- aryloksyalkyl, halogenalkyl, halogenalkenyl, halogenalkynyl, halogenalkoksy, halogenalkenyloksy, halogenalkynyloksy, halogen, hydroksy, cyano, nitro, -NR7R8, -NR7COR8, -NR7CSR8, -NR7S02R8, -N(S02R7) (S02R8) , -COR7, -CONR7R8, -alkylCONR7R8, -CR7NR8, -COOR7, -OCOR7, -SR7, -SOR7, -SO_R7, -alkylSR7, -alkylSOR7, -alkylSO2R7, -OSO2R7, -S02NR7R8 CSNR7R8, -SiR7R8R9, O2R, -OCH2CH2CO_R, -CONR7S02R8, -alkylCONR7S02R8, -NHCONR7R8, -NHCSNR7R8, eller et nærliggende par av R1, R2, R , R4, R5 og R6" når -"de sammen danner en kondensert 5- eller 6-leddet karbocyklisk eller heterocyklisk ring, R1 (når den er bundet til et nitrogenatom) er hydrogen, eventuelt substituert alkyl, cykloalkyl, alkyl- . cykloalkyl, hydroksyalkyl, alkoksyalkyl, eventuelt substituert aryl, eventuelt substituert arylalkyl, eventuelt substituert aryloksyalkyl, eventuelt substituert heteroaryl, eventuelt substituert heteroarylalkyl, eventuelt substituert heteroaryl- oksyalkyl, halogenalkyl, hydroksy, cyano, nitro, -NR R , -NR7COR8 -NR7CSR8, -NR7COOR8, -COR -NR7S02R8, -NfSO.R7} (SO-R8) , -CONR7R8, -alkylCONR7R8, -CR7NR8, -COOR7, -OCOR7, -SOR7, -SO2R7, -alkylSR7, -alkylSOR7, -alkylS02R7, -OSO-R7, -S02NR7R8 -CSNR7R8, "7 o 7 -SiR R°R', -SR7, -SOR7, -S02R7, OCH0CO.R7, -OCH0CH.CO,R7, -CONR7SO-R8, -alkylCONR7SO,R8, 7 fl 7 R 7 B 9 -NHCOR R eller -NHCSR R, og R , R og R er hver, uavhengig, hydrogen, eventuelt substituert alkyl, eventuelt substituert alkenyl, alkynyl, eventuelt substituert aryl eller eventuelt substituert arylalkyl, halogenalkyl, halogenalkenyl, halogen- alkynyl, halogen eller hydroksy.
Patent NO-985744-L (NO)
Inventor: WIJCK JULIUS GERARDUS THEODORU
IPC: C07D251/60
Filed: 1998-12-08
Abstract: The invention relates to a method for the preparation of melamine from urea via a high-pressure process in which solid melamine is obtained by transferring the melamine melt leaving the melamine reactor to a cooling vessel where the melamine melt is cooled by means of liquid ammonia. The melamine melt is cooled to a temperature of between about 50° C. and about 350° C. by means of liquid ammonia, a mixture comprising ammonia and melamine being formed, after which all or part of this mixture is transferred to an expansion vessel, the composition being contacted with ammonia for about one minute to about five hours, following which solid melamine is liberated from the composition.
Patent NO-990908-L (NO)
Title: Br°nnbetjeningsfluider
Inventor: OOYEN JOHANNES ADRIANUS CORNEL
IPC: C09K8/06
Filed: 1999-02-25
Abstract: Vandig brønnbetjeningsfluid som i oppløsning omfatter et kaliumformiat, kjennetegnet ved at oppløsningen i tillegg inneholder kaliumsitrat. Kaliumsitratet som kan tilsettes som et fast stoff til en kaliumformiatoppløsning, forøker fluidets densitet og minimaliserer eventuell risiko for kakedannelse som kan forventes dersom fast kaliumformiat anvendes.
Patent NO-993255-L (NO)
Inventor: OVEREND ANDREW STUART
IPC: C09D133/06
Filed: 1999-06-30
Abstract: Acrylic plastisol composition comprising a plasticiser component, a plasticiser compatible acrylic polymer powder component of primary particle size >=0.4 mum and preferably not more than 30 mum, and Tg >=65° C., and a plasticiser incompatible polymer powder component, where both polymers are preformed, are present in the weight ratio 95:5 to 40:60, and in combination are compatibly formulated with the plasticiser component.
Patent SE-0000427-L (SE)
Inventor: ARVIDSSON PEDER
IPC: B23C5/28
Filed: 2000-02-11
Abstract: This invention relates to a milling tool with a head (1) which is delimited by an envelope surface and a plane end surface (5), whereby a plurality of tangentially spaced-apart cutting inserts (11) are placed in chip spaces (9) formed in an edge portion (8) on the head. In the tool head, an internal main duct (7) is included which has the purpose of receiving a cooling and/or lubricating fluid from outside, as well as a number of branch ducts (12) with the purpose of individually leading out the fluid from the main duct towards the different cutting inserts. According to the invention, the main duct (7) extends up to and mouths in the end surface (5), whereby each individual branch duct consists of an outwardly open groove (12) formed in the end surface (5), which groove extends from the mouth of the main duct (7) up to the individual chip space (9), more precisely up to an outer end (14) situated in front of the cutting insert (11) as seen in the direction of rotation of the tool. <IMAGE>
Patent SE-0003256-L (SE)
Inventor: NORRYD SAM
IPC: F23Q25/00
Filed: 2000-09-13
Abstract: The invention relates to an automatic light extinguisher comprising a holder (2) adapted to fix the same (1) in position on a candle, and a lid or a cap (4) which via a swing arm (5) is pivotably attached to the holder (2) and a trigger mechanism (6) arranged to swing the arm with the cap (4) downwards over the flame (7) of the candle (3) so as to extinguish it when the candle (3) has burnt itself down sufficiently. The trigger mechanism (6) operates with two springs, one (8) resiliently biasing a projection (10) into contact with the wall surface of the candle (3), and one (11) resiliently biasing the swing arm (5) and its cap (4), the projection (10), when in its active position, locking the spring arm (5) with its cap (4) in its upwards directed position, remote from a candle flame (7) and, when in its inactive position, not occurring until the candle has burnt down past the projection (10), which is then in a substantially horizontal position, releases the swing arm (5) with its cap (4) which is then by the biased spring instantaneously swung down over the candle flame (7) so as to extinguish it.
Patent SE-0003300-L (SE)
Inventor: KADDANI AHMED
IPC: H01H33/76
Filed: 2000-09-18
Abstract: The method for breaking a current in medium or high-voltage applications uses a switch with a pair of contact members (1,2), at least one of which is moved from a closed position, in which the members are in electrical contact with each other, to an open position where they are separated. An electrical arc is generated during the separation movement.  For high currents, the arc is extinguished by a pressurized gas directed towards it, and which is generated by using the energy of the arc itself. For low currents, the arc is extinguished by squeezing it in an area between a first and second insulating body (3,4).
Patent SE-0101758-L (SE)
Inventor: NILSSON STURE
IPC: A63C5/035
Filed: 2001-05-18
Abstract: The middle support part of the ski is formed by three wooden profiles which have been glued together, a bottom layer of laminated plastic material (16) and a casing (13) covering the top and sides of this part. This casing is extended at the ends of the ski to form splash guards (15) around the top and sides of the wheel (2). The wheel axle are secured to flat length direction aluminium profiles (3), which are joined together at their opposing ends by two cross-direction steel rods (5) glued inside cross-direction milled cavities (10, 11) in the middle wooden profile.
Patent SE-0103321-L (SE)
Inventor: SCHLASBERG JOHAN
IPC: G06F16/00
Filed: 2001-10-05
Abstract: The requesting symbol (10) displayed in electronic document relating to specific information is sent as request message by user along with information identifier and receiving address to distributing system (3). The system (3) searches for specific information via network from database (4-6) corresponding to information identifier and received data is sent to indicated information receiving address.  Independent claims are also included for the following:  (a) method for requesting and distributing information;  (b) computer program product
Patent SE-0200826-L (SE)
Inventor: SOMMER MAGNUS
IPC: H04B7/005
Filed: 2002-03-19
Abstract: The present invention relates to a method and a software product at a mobile telecommunication and data communication system. More exactly the method intends to make possible an efficient pilot channel planning in a CDMA-based cellular radio network and includes the steps: Division of the radio network into subareas, estimation of the attenuation of the radio signal to subareas, calculation of an objective function to get a numerical value regarding the quality of the radio network, or part of the radio network, on basis of a configuration of pilot channel power output where the objective function includes a coverage related term and a capacity related term and optimization with the aim to configure the power output values of pilot channels so that the numerical value of the objective function is maximized.
Patent SE-0201836-L (SE)
Inventor: BOUTTENS DENIS
IPC: A61F2/00
Filed: 2002-06-17
Abstract: The invention concerns a shoulder prosthesis assembly comprising a meta-glenoid element ( 7 ) formed by a plate ( 13 ) provided with a central tubular block ( 14 ) an anchoring members in the glenoid cavity ( 3 ), and a glenoid sphere ( 9 ) designed to top the metaglenoid element and provided with an axial screw ( 35 ) screwed into said pin; the glenoid sphere has an articulated surface ( 11 ) designed to co-operate with a cup of an associated humeral prosthesis ( 2 ); said assembly comprises means ( 16, 45, 46; 51, 50, 49 ) guiding the glenoid sphere adapted to facilitate its being fixed on the meta-glenoid element; said means comprise a pin ( 46 ) adapted to be slotted into the tubular block ( 14 ) and into an axial passage of the screw ( 35 ); the glenoid sphere ( 9 ) is thus guided by being slid on the pin ( 46 ) until the screw ( 35 ) is inserted precisely into the axis of the tubular block ( 14 ), wherein it can be screwed without any risk of damaging the thread on the screw and the internal thread of the block. Advantageously, the free end ( 48 ) of the screw ( 35 ) can likewise be bevelled to facilitate its being inserted in the block ( 14 ) without damaging the threads. The inventive arrangement is particular useful considering the difficulties encountered by the surgeon for correctly positioning the glenoid sphere ( 9 ) relative to the meta-glenoid element ( 7 ) owing to lack of visibility.
Patent SE-0302568-L (SE)
Inventor: KINGSTON TIM
IPC: B60K17/04
Filed: 2003-09-26
Abstract: The device for driving a wheel in a vehicle incorporates a planet gear, which in turn incorporates a planet holder (100). At least one surface (73) in the planet holder has a tooth structure extended so that this structure is exposed in the planet holder axial direction. A power transmission part (15) is provided, in which at least one surface (19) has a tooth structure corresponding to the planet holder surface extension. The two tooth structures engage with each other.
Patent SE-0401126-L (SE)
Inventor: ERIKSSON ANDREAS
IPC: G06T5/40
Filed: 2004-04-30
Abstract: A method of automatically improving the usability of a medical picture is disclosed. An input medical picture, comprising an array of intensity data, is improved by automatically controlling at least one intensity parameter, such as brightness or intensity, in order to increase the entropy of at least a part of the array of intensity data. Hereby, a remarkable improvement in the intensity resolution of various parts, especially in soft tissue, is achieved.
Patent SE-0500867-L (SE)
Inventor: TRINH DAVID HUY
Filed: 2005-04-18
Abstract: The cutting tool insert comprises a material of cemented carbide, cermet, ceramics, cubic boron nitride or steel on the functioning portion of surface, and a coating (2) comprising layer of metal oxide or composite oxide. The metal atom of metal oxide is titanium, niobium, vanadium, molybdenum, zirconium, chromium, aluminum, hafnium, tantalum, yttrium or silicon. The oxide layer comprises components (3,4) with different composition and different structure which consists of single phase oxide of metal element or solid solution of 2 or more metal oxides. The cutting tool insert comprises a material of cemented carbide, cermet, ceramics, cubic boron nitride or high speed steel on the functioning portion of surface, and a thin, adherent, hard and wear resistant coating. The coating comprises plasma vapor deposited layer of metal oxide or composite oxide. The metal atom of metal oxide is titanium, niobium, vanadium, molybdenum, zirconium, chromium, aluminum, hafnium, tantalum, yttrium or silicon. The oxide layer has thickness of 0.2-20 mu m, and comprises components (3,4) with different composition and different structure which consists of single phase oxide of metal element or solid solution of 2 or more metal oxides.