baber/WOPTO huggingface dataset:
Patent UY-31298-A (UY)
Title: Dispositivo para extracción de flotantes de reactores anaerobios de flujo ascendente y su método de operación
IPC: B01D12/00
Filed: 2008-08-18
Abstract: Se desarrolló un dispositivo y su método de operación, para extraer flotantes de reactores anaerobis de flujo ascendente, independientemente de su tamaño y sin empleo de partes móviles. Este dispositivo incluye una campana de captación de biogás sumergida, un sumidero o canaleta dentro de la misma, un sistema de regulación de presión para sumergir la canaleta o sumidero periódicamente, un reservorio de biogás para hacerlo emerger rápidamente una vez extraídos los flotantes y un sello hidráulico para evitar el escape de gas por la conducción de salida de flotantes.
Patent UY-31838-A (UY)
Title: Derivados de quinoxalin- y quinolin-carboxamida
Inventor: PASCAL FURET
IPC: A61P35/00
Filed: 2009-05-21
Abstract: La invención se refiere a los compuesto de la formula (I) en donde los sustituyentes son como se definen en la memoria descriptiva,  en forma libre o en la forma de una sal farmacéuticamente aceptable, solvato . éster. N-óxido del mísmo ; a procesos para la preparación de los mísmos; a productos farmacéuticos que contienen estos compuestos, en particular para el uso en una o más enfermedades mediadas por la cinasa de proteína tirosina.
Patent UY-33844-A (UY)
Title: Anticuerpos recombinantes contra el factor de crecimiento del endotelio vascular (vegf)obtenidos mediante mutagenesis de regiones variables
Inventor: HUMBERTO LAMDAN ORDAS
IPC: A61K39/395
Filed: 2011-12-28
Abstract: La presente invención revela anticuerpos recombinantes humanos que reconocen el Factor de Crecimiento del Endotelio Vascular-A (VEGF-A) humano, bloquean su interacción con el receptor VEGFR2, e interfieren con sus efectos proliferativos in vitro y pro-angiogénicos in vivo.  Estos anticuerpos identifican un epitope en el VEGF-A humano diferente a cualquier otro reportado antes y se obtuvieron combinando una misma región variable de cadena ligera de inmunoglobulinas, con otras tres de cadena pesada. Los anticuerpos se obtuvieron mediante mutagénesis de regiones variables de inmunoglobulinas humanas, y pueden emplearse para la inmunoterapia de entidades patológicas cuyo curso esté asociado al aumento de la vasculatura, tales como la degeneración macular asociada a la edad, el cáncer y otras.
Patent UY-33857-A (UY)
Title: Compuestos de tiofeno 2,3,5-trisustituidos y usos de los mismos.
Inventor: DAVID BARNES
IPC: A61K31/381
Filed: 2012-01-02
Abstract: La presente invención proporciona un compuesto de la fórmula I, un método para la fabricación de los compuestos de la invención, y sus usos terapéuticos.  La presente invención proporciona adicionalmente una combinación de agentes farmacológicamente activos y una composición farmacéutica.
Patent UY-34075-A (UY)
Inventor: PETER RENOLD
IPC: A01N43/36
Filed: 2012-05-17
Abstract: ESCANEAR FORMULA I del SGDD pag 285/293
Patent UY-34087-A (UY)
Inventor: TILLER THOMAS
IPC: B05D5/06
Filed: 2012-05-22
Abstract: formula 1 pagina 24 (26/76)
Patent UY-35789-A (UY)
Title: USO INTRAVAGINAL DE LAS 18-METIL-15ß, 16ß-METILEN-19-NOR-20-ESPIROX-4-EN-3-ONAS, ANILLOS INTRAVAGIN ALES QUE COMPRENDEN 18-METIL-15ß,16ß-METILEN-19-NOR-20-ESPIROX-4-EN-3-ONAS Y SU USO EN LA ANTICONCE PCIÓN
Inventor: LINDENTHAL DR BERNHARD
IPC: C07J53/00
Filed: 2014-10-17
Abstract: Uso intravaginal de las 18-metil-15ß,16ß-metilen-19-nor-20-espirox-4-en-3-onas de la fórmula general (I). Anillo intravaginal que comprende 18-metil-15ß,16ß-metilen-19-nor-20-espirox-4-en-3-onas de la fórmula general I. Su uso en la anticoncepción.
Patent UY-37099-A (UY)
Title: Tratamiento de ulceras gastricas en animales no humanos utilizando formulaciones no recubiertas ni protegidas entéricamente que comprenden polímeros de proantocianidina o extractos botanicos derivados de croton o calophyllum
Inventor: LISA A CONTE
IPC: A61K31/353
Filed: 2017-01-30
Abstract: Métodos y composiciones para tratar y prevenir úlceras gástricas y/o síntomas de las mismas, en animales no-humanos, especialmente caballos. Los métodos involucran el tratamiento con una cantidad terapéuticamente efectiva de una composición no recubierta ni protegida entéricamente que comprende un polímero de proantocianidina de Croton lechleri, o un extracto botánico de Croton lechleri. Dichas composiciones, que no están protegidas entéricamente y que contienen dicho polímero o extracto de C. lechleri pueden ser formuladas como pasta, gel, o pasta de gel la cual se administra oralmente, para tratar, reducir, resolver, mejorar o evitar úlceras gástricas en animales, particularmente equinos.
Patent UY-39119-A (UY)
Title: Proteínas de fusión para tratar trastornos metabólicos
Inventor: BRIAN R BOETTCHER
IPC: C07K19/00
Filed: 2021-03-08
Abstract: La invención se refiere a la identificación de proteínas de fusión que comprenden variantes polipeptídicas y proteicos del factor de crecimiento de fibroblastos 21 (FGF21) que tienen propiedades farmacéuticas mejoradas. También se describen métodos para el tratamiento de trastornos asociados con el FGF21, incluyendo trastornos metabólicos.
Patent YU-26499-A (YU)
Title: Diaza-spiro (3,5) nonane derivatives
Inventor: GEO ADAM
IPC: C07D471/10
Filed: 1999-06-10
Abstract: This invention refers to the compounds of a general formula I where R1 is C6-C12 - cycloalkyl, optionally substituted by lower alkyl or C (O)O lower alkyl, indane -1-il or indane -2-il, optionally substituted by lower alkyle; acenaphten-1-bicyclo (3.3.1) non-9-il, ovahydro-inden-2-il; 2,3-dihydro-1H-phenalen-1-il, 2,3, 3a, 4,5,6 - hexahydro- 1H- phenalen 1-il, decahydro-azulene-2 il, ; bicyclo (6.2.0) deca-9-il, naphtalene-1-il, decahydro-naphtalene-2-il, tetrahydronaphtalene-2-il, tetrahydro-naphtalene-2-il or 2-oxo-1,2 diphenyl-ethyl; R2 is = O or hydrogen, R3 is hydrogen, isoindolil-1,3-dion, lower alcoxy, lower alkyl, amino, benziloxy, CH2OR5 or CH2N(R5)2 R4 is hydrogen or -CH2OR5, R5 is hydrogen or lower alkyl, A is cyclohexyl or phenyl, optionally substituted by lower alkyk, halogen or alcoxy, and on their pharmaceutically acceptable acid salts of addition. Compounds of this invention are agonists and/or antagonists or famine FQ (OFQ) receptors and are thus useful in the treatment of diseases connected to this receptor.
Patent YU-34695-A (YU)
Inventor: ROUYER E
IPC: C03C13/00
Filed: 1995-05-26
Abstract: A biologically degradable mineral-fiber composition characterized by the following constituents in percent by weight: SiO2 50 to 60; Al2O3 less than 2; CaO + MgO 10 to 16; Na2O + K2O 14 to 19; B2O3 7 to 16; TiO2 0 to 4; ZrO2 0 to 5; ZnO 0 to 5; MnO 0 to 4; BaO 0 to 5; TiO2, ZrO2, ZnO, MnO, BaO 1 to 6; Fe2O3, SrO 0 to 2; F, Li2O 0 to 2; P2O3 0 to 4.
Patent YU-56500-A (YU)
Title: Process for making clear polyurethane/urea elastomers
Inventor: STEPHEN SENEKER
IPC: C08G18/72
Filed: 1999-03-11
Abstract: <1.5) reacts an aromatic diisocyanate at an NCO/OH ratio from about 1.3 to about 3.0 to give a non-viscous isocyanate-terminated prepolymer. A mixture that contains this prepolymer and an aliphatic diisocyanate is then reacted with an aromatic diamine to give a clear elastomer. The elastomers have excellent overall physical and mechanical properties, including resilience greater than 55 %. The elastomers are valuable for in-line skates and other applications for which clarity is important.
Patent YU-83685-A (YU)
Title: Attachment assembly
Inventor: FISCHER A
IPC: F16B13/12
Filed: 1985-05-20
Abstract: An anchor for fastening in bore holes comprises an expander body driven into an expansion sleeve, having a slotted expansible portion, by a stay bolt to which a torque is applied to draw the expander body into the expansion sleeve. The expander body has at its trailing end a conical portion which merges into a concavely-curved portion. The angle of the concavity of the curved portion at the leading end of the expander body corresponds to a double angle of inclination of the conical portion to the central axis of the anchor.
Patent YU-86688-A (YU)
Title: Razvlačilište brodova sa medjusobno komunikativnim površinama i razvozna kolica za razvlačište
Inventor: DZODZO B
Filed: 1988-04-29
Abstract: Pronalazak se odnosi na razvlačilište brodova sa medjusobno komunikativnim površinama i razvozna kolica sa nisko položenim šinama i neodiznim postoljem koja se primenjuju na ovom razvlačilištu. Cilj pronalaska je ostvarenje razvlačilišta brodova bez jame i sa razvoznim i brodskim kolicima bez uredjaja za podizanje brodova kod koga su površine medjusobno saobraćajno prohodne za nespecijalna vozila. Šine (50) razvozne površine (5) su upuštene u podlogu (G5), efektivna visina (D) razvoznih kolica (8) konstruktivno je smanjena i podeljena na uzdignuće (R) koje sačinjavaju šine (60) i temelji šina (61) na ležajima (6) brodova i ulegnuće (S) podloge (G5) razvozne površine (5). Izmedju razvozne površine (5), staza (9) i ležaja (6) nalaze se rampe (SZL) u obliku blagih kosina terena. Postolje (85) razvoznih kolica (8) i šine (80) postavljene su što bliže podlozi (G5), odnosno šinama (50) razvozne površine. Po šinama (80) gaze točkovi (74) brodskih kolica (7) na kojima se nalazi brod (1). Pronalazak se može izvesti u više varijanti.
Patent AT-A170584-A (AT)
IPC: C07C303/00
Filed: 1984-05-23
Abstract: A process is provided for preventing or ameliorating arrhythmia by administering to mammals, including man, an effective dose of d-sotalol to lengthen the action potential duration of cardiac cell without blockade of beta-adrenergic receptor sites.
Patent BE-800006-A (BE)
Title: Cyclopropane carboxylic esters derivs - insecticides
Inventor: ELLIOTT M
IPC: A01N53/10
Filed: 1973-05-24
Abstract: carboxylic esters are of formula (I) where R' = H or Me; R2 = H, hal or alkyl; R3 = H, hal, alkyl (is not = R2) or carboxy with >=2C if R2 = Me; or R2R3C = a cycloalkylene residue with >=1 exocyclic double bond; with the proviso's that R1=R2=H when R1 = Me, and R3 >=2C with R1= R2 = H; and R = H, alkyl, PhCH2C triple bond CCH2- or PhOCH2C triple bond CCH2-, where Z = O, S, CH2, CO, Y = H, alkyl, alkenyl, alkynyl or aryl or furyl opt. substd. in the ring by >=1 alkyl, alkenyl, alkynyl, alkoxy or hal; R7 and R8 = H, alkyl, or alkenyl, R9 = H or Me; R10 and R11 = H or alkyl; R12 = an organic residue with an unsatd. C-C bond alpha to the CH2 gp., A is an aromatic. dihydro or tetrahydro ring; X1-X4 = H, Cl or Me; Z3 = CH2, O, CO or S, Z1 and Z2 = Cl or Me, D = H, CN or C triple bond CH; n = 0-2 and Me = CH3; with the proviso's that R is not = H, Et or allethronyl when R1 = H, R2=R3=Cl and I is racemic. I are prepd. by (a) esterification or transesterification (b) condensing a phosphorane R2R3C=P(Z4)3 with a 3-aldehyde or 3-keto 2, 2-dimethyl cyclopropane carboxylic ester.
Patent BE-820925-A (BE)
Title: Flood lamp with convertible head - has pivots for movable screens interrupted at light source area and axis of rotation passes through bulb
IPC: F21V17/02
Filed: 1974-10-10
Abstract: The light source is fixed to an axis on which there are mounted, on either side of the source, the supports for two or more concentric screens of different radii from the source and enclosing it. The axis concerned is interrupted in the area occupied by the source, typically by arms fitted to the axis, or by a reflector, whose free edge forms the connection between the axis ends. The screens can be held in position on the axis by friction or by counterweights, and some of them can be transparent, translucent, or opaque to vary the intensity and colour of the lighting.
Patent BE-821742-A (BE)
Title: Peptides contg. the pyroglutamyl-histidyl unit - analogues of the luteinising hormone release factor
IPC: C07K5/103
Filed: 1974-10-31
Abstract: Peptides of formula (I), and their acid-addn salts and metal complexes, are new: (where X3 and X5 are each an opt. ring-substd phenylalanyl residue; X4 and X6 are each a glycyl, alanyl (D- or L) or asparaginyl residue; X7 is the residue of a neutral, hydrophobic, S-free, non-heterocyclic amino acid; X8 is the residue of a basic amino acid or a glycyl or opt. ring-substd phenylalanyl residue; W is a glycinamide residue, NH2, alkylamino, dialkylamino, pyrrolidino, morpholino or 1-methyl-5-aminomethyltetrazolyl, where 'alkyl' contains 1-4C atoms and is opt. substd by OH; all the amino acid radicals are in the L form except in the case of glycine or unless stated otherwise). Peptides (I) are analogues of the natural luteinising hormone release factor (LH-RH): Glu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2 which releases luteinising hormone and follicle stimulating hormone; (I) have an activity very similar to natural LH-RH and can thus be used to treat disorders arising from hypothalamus dysfunction, e.g. to treat menstrual disorders, stimulate ovulation, induce the ripening of spermatozoa, etc esp. for livestock rearing.
Patent BE-886187-A (BE)
IPC: B21D17/00
Filed: 1980-11-14
Abstract: 1. A process for forming a collar (11, 11') on the wal of a metal tube (1, 1'), preferably of small thickness, said process being characterized in that the tube (1, 1') being empty of any filling a circular groove (6, 6', 17) delimited by two adjacent sides (7, 8) is formed in per se known manner at the periphery of the tube (1, 1') and on the face opposite to that where the collar is to be produced, by an operation of displacing the metal such as knurling, and that a an axial compression is then applied to the ends of the tube (1, 1') until the two adjacent sides (7, 8) formed in the course of the first phase are brought into contact.
Patent BE-896126-A (BE)
Title: Reinforced industrial floors made of concrete - which contains reinforcing fibres, so continuous floors can be laid free from shrinkage grooves
IPC: E01C11/18
Filed: 1983-03-10
Abstract: Reinforcing fibres are added to a concrete while the latter is being mixed; and the mixt. is then used to make a continuous floor, i.e. a floor contg. no grooves permitting shrinkage of the concrete. The fibres are pref. steel wires which are each provided with an anchor locking the fibres in the concrete. The concrete pref. uses max. 350 kg of cement grade HK-40, P4O, H1-30 or PPZ-30 per cu.m. of concrete, and a water/ cement ratio (W/C) below 0.52. The concrete pref. also contains a fluidiser. When the concrete is being laid round obstacles which will prevent its natural shrinkage, or where constraints will occur, the obstacles are pref. covered by a compressible mat and steel reinforcing bars in the concrete. The floors are used forfactories, stores or garages etc.. The random distribution of the fibres provides multidirectional reinforcement of the concrete, so the latter does not crack during its shrinkage on setting; no shrinkage grooves are thus required in the floor.
Patent BE-903096-A (BE)
Title: Building air conditioning system - uses fire sprinkler circuit to carry heated or cold water to regulated inside temperature
IPC: F24D3/12
Filed: 1985-08-21
Abstract: The building air conditioning system consists of a three-dimensional framework of pipes supporting a ceiling or roof and carrying sprinkler nozzles to extinguish fires. The pipes are laid out in a circuit which carries cold or heated water to lower or raise the temperature inside the building. - The water is circulated by a pump, and the circuit can be equipped with a thermal unit to heat or cool the water. Alternatively the circuit may be linked to a solar heating system. The pipe framework can be adapted to fit into various shaped roof surfaces.
Patent BE-903726-A (BE)
Title: Recipient de preparation et de stockage de produits alimentaires.
IPC: A47J37/00
Filed: 1985-11-27
Abstract: Récipient de préparation et de stockage de produits alimentaires comprenant une cuvette à sommet ouvert, entouré d'un bord supérieur (21), une paroi inférieure partielle (30) formant une face interne (32) d'un contour prédéterminé et un orifice (34), un moyen de recouvrement capable de coopérer avec le bord supérieur (21) et un élément inséré présentant une périphérie (50) conformée à l'ouverture de la cuvette, une face supérieure non obstruée (51) et une face inférieure (52) dont le contour se conforme sensiblement au contour de la face interne de la paroi inférieure pour sceller l'orifice.
Patent BE-903835-A (BE)
Title: Appareil de coupure amovible avec glissieres extensibles.
IPC: H01H71/60
Filed: 1985-12-11
Abstract: Un appareil de coupure amovible pouvant etre sorti d'une cellule ou d'une armoire et pouvant etre rentré dans celle-ci. Une unité d'appareil de coupure est disposée de manière amovible dans une cellule et est supportée sur des glissières fixes lorsqu'elle se trouve dans la cellule et sur des glissières extensibles lorsqu'elle est sortie de la cellule, les glissières pouvant etre rentrées dans la cellule et sortie de celle-ci automatiquement avec l'unité d'appareil de coupure.
Patent BE-904892-A (BE)
Title: Toit pare-soleil enroulable.
IPC: E06B9/40
Filed: 1986-06-09
Abstract: Pare-soleil enroulable pour jardins d'hiver ou similaires, qui comporte une tenture (10) que l'on peut dérouler à partir d'un arbre enrouleur à l'aide d'un organe souple longitudinal de traction (32) qui agit sur une barre d'extrémité de la tenture (10), guidée dans des rails fixes, passe autour d'un organe de renvoi (34) situé à l'extrémité de la zone de déploiement du toit, aboutit à un élément enrouleur (36) solidiaire de l'arbre enrouleur, et s'enroule sur cet élément. Application aux toits pare-soleils en général.
Patent BE-905830-A (BE)
Title: Domestic electrical appliance for serving complete meals - uses programmed control of prepn. and cooling of ingredients in dedicated compartments hermetically sealed for cleansing
IPC: A47J27/14
Filed: 1986-11-28
Abstract: A variable-power electric motor is programmed by a minicomputer to carry out successive operations of washing, peeling, chopping, grating and seasoning of ingredients of the meal, with allowance for each ingredient's nature and quantity. Separate compartments are provided for these operations, along with a water tank and heater. - Three microwave ovens are reserved for meat and for vegetables requiring treatment with steam and cold water respectively. A signal is given when the meal is ready.
Patent BE-777569-A (BE)
Title: Salicylate carbonate compsns - for sustai ined - release of acetyl salicylic acid in body derivs
IPC: C07D317/20
Filed: 1971-12-30
Abstract: Pharmaceutical compsns. contg. as active ingredients cpds. (I) (where R is 2-30C opt. unsatd. aliphatic or alicyclic, alcohol or polyhydroxy radical) capable of sustaining an effective level in plasma of salicylate.
Patent CA-1082652-A (CA)
Inventor: OLSON EUGENE D
IPC: B66C23/36
Filed: 1974-04-03
Granted: 1980-07-29
Abstract: ABSTRACT OF THE DISCLOSURE     A self-propelled, low profile material-handling vehicle mounted on a pair of front wheels and a pair of rear wheels. The vehicle supports an extendible boom rotatable around a horizontal pivot axis that is sub-stantially located above the rear wheels. A cab for a driver is located on one side of the boom, and a load-carrying platform is located on the Ride of the boom, opposite the cab. A well located in the vehicle body between the cab and the load-carrying platform is positioned lower than the pivot axis of the boom and is arranged to receive the boom when it is pivoted downward toward the front wheels so that a load can be maneuvered below grade level. The pivot axis is vertically located above the top of the wheels and below the top of a steering wheel located within the cab so that the driver's vision is substantially unobstructed when a load is carried by the boom close to the grade level.
Patent CA-1039714-A (CA)
Inventor: PAPA SISTO S
IPC: C09B35/46
Filed: 1975-02-04
Granted: 1978-10-03
Abstract: TRIAZO DYESTUFF AND PROCESS FOR PREPARING SAME     ABSTRACT OF THE DISCLOSURE    The triazo dyestuff having the formula:             (I) is useful in dyeing polyamide fibers and leather.  This compound is prepared by tetraazotizing 4,4'-diamino-benzanilide, after which the obtained tetrazo-compound is coupled in an acid medium with 1-amino-8-naphthol-3,6-disulphonic acid to form a diazo-monoazo-compound which is then coupled, in an alkaline medium, with the sulphanilic acid diazoderivative and, finally, the diazo-compound is coupled in an alkaline medium with meta-hydroxy-phenylglycine.
Patent CA-1045824-A (CA)
Inventor: KLAPDAR WILHELM
IPC: C21C7/064
Filed: 1975-04-16
Granted: 1979-01-09
Abstract: ABSTRACT OF THE DISCLOSURE                A process for the production of steel with increased ductility in which a sulfur-containing steel melt is deoxidized and, if desired, is supplied with alloying elements, the deoxidized melt is treated with calcium as part of a purification action simultaneously reducing the sulfur content and the reaction is carried out in a casting ladle having a lining free from siliceous oxides.  The melt is covered with a synthetic slag free from siliceous oxides and the calcium-containing substance is introduced in fine-grain particulate form into the melt in a carrier gas at a level at least 2000 mm below the melt surface and at a rate which is less than the maximum rate at which the calcium-containing substance is capable of reacting with the melt.
Patent CA-1058879-A (CA)
Inventor: GALUSHA RICHARD E
IPC: C03C27/12
Filed: 1975-04-17
Granted: 1979-07-24
Abstract: IMPROVED SUBSURFACE-FORTIFIED GLASS LAMINATES                Abstract of the Disclosure Subsurface-fortified glass laminates exhibiting improved breakage characteristics and increased resist-ance to delayed breakage are described.  Such laminates have particular utility in the fabrication of glass tableware.
Patent CA-1043622-A (CA)
Inventor: VAN DER LELY ARY
IPC: A01B73/00
Filed: 1975-08-05
Granted: 1978-12-05
Abstract: ABSTRACT        C. van der Lely N.V. Waverskade 10, Naseland, The Netherlands.                            "Rotary harrows"   The invention relates to soil cultivating imple-ments or rotary harrows which comprise a plurality of soil-working members that are rotatable about correspond-ing upwardly extending axes.  The soil-working members are arranged in a row that extends substantially horizontally transverse to the intended direction of operative travel and are arranged to be power-driven by a treater or ether vehicle which moves the implement or harrow over the ground in the use thereof.    A supporting structure of frame for the soil-working members has at least three ground wheels which are arranged in not less than two separate group that are upwardly and downwardly displaceable relative to said structure or frame.  Each group is provided with at least one corresponding gear box containing parts of a drive transmission to the members of that group.
Patent CA-1046634-A (CA)
Inventor: KANAI KENJI
IPC: G11B5/39
Filed: 1975-08-19
Granted: 1979-01-16
Abstract: TITLE OF THE INVENTION:              Magnetic Head ABSTRACT OF THE DISCLOSURE:             A magnetic head comprising a thin substantially U-shaped ferromagnetic sheet which is made of a material exhibiting magnetoresistance property and which is connected magnetically in at least one portion of a magnetic circuit having an air gap with the open end of the  U-shaped ferro-magnetic sheet forming at least part of the  air gap, and a pair of current electrodes or terminals attached to the ends of the  thin ferromagnetic sheet for receiving current flow of a predetermined magnitude through the  thin ferromagnetic sheet, whereby the variation in magnetic field across the air gap of the  ferromagnetic sheet may be detected as the variation in voltage across the  pair of current electrodes or terminals.
Patent CA-1042556-A (CA)
Inventor: BOEKHORST ANTONIUS
IPC: H04N3/23
Filed: 1975-08-14
Granted: 1978-11-14
Abstract: ABSTRACT:              Line deflection circuit in which the deflection coil is east-west modulated. In order to cancel an east-west dependent horizontal linearity defect the inductance value of the linearity correction coil is made independent of the field frequency, for example by means of a compensating current. In an embodiment this current is supplied by the shunt coil of the east-west modulator.