baber/WOPTO huggingface dataset:
Patent EP-1000554-B1 (EP)
Inventor: MASTWIJK HENDRIKUS CORNELIS
IPC: C02F1/48
Filed: 1999-11-11
Granted: 2005-03-02
Abstract: System for treating pumpable products by electrical pulses comprising at least one treatment chamber formed by at least two modules and comprising a flow channel through which product can be pumped, an end electrode (28) at the one end of the treatment chamber to which a low voltage has to be applied, another end electrode (20) at the other end of the chamber to which a high voltage has to be applied, a generator circuit for generating voltage pulses to be applied to said electrodes. The treatment chamber is provided with at least one intermediate electrode (22,24,26) which is located in between said end electrodes and to which a voltage in between the voltages of the two end electrodes has to be applied.
Patent EP-0994047-B1 (EP)
Inventor: SERRAULT JEAN-PIERRE
IPC: B65F1/14
Filed: 1999-10-12
Granted: 2004-08-04
Abstract: A plastic waste bin incorporates a transponder for identification by a collection vehicle and exchange of information such as weight. The transponder (6) is held in place by fixings (7, 8) which make direct contact with it and are made from material(s) that are compatible, from the point of view of recycling, with the plastic used to make the bin itself. The fixings hold the transponder in place in a cavity (4) situated e.g. beneath the collar (1) used for gripping the bin. One of the fixings (7) comprises a housing with a threaded skirt (10) and surfaces shaped to receive a tool used to unscrew it.
Patent EP-1047694-B1 (EP)
Title: Composes heteroaromatiques bicycliques agissant comme inhibiteurs de la tyrosine kinase
Inventor: CARTER MALCOLM CLIVE
IPC: A61P17/06
Filed: 1999-01-08
Granted: 2004-07-07
Abstract: L'invention concerne des composés hétéroaromatiques substitués représentés par la formule générale (I). X est N ou CH. Y est CR1, V étant N, ou bien Y est N, V étant CR1, ou bien Y est CR1, V étant CR2, ou bien enfin Y est CR2, V étant CR1. En l'occurrence, R1 est un groupe CH¿3?SO2CH2CH2NHCH2-Ar-, dans lequel Ar appartient au groupe des phényle, furane, thiophène, pyrrole, et thiazole, chacun pouvant être éventuellement substitué par un ou deux groupes halo, C1-C4 alkyle, ou C1-C4 alcoxy. R?2¿ appartient au groupe des hydrogène, halo, hydroxy, C¿1?-C4 alkyle, C1-C4 alcoxy, C1-C4 alkylamino, et C1-C4 di[alkyl]amino. U est un groupe phényle, pyridyle, 3H-imidazolyle, indolyle, isoindolyle, indolinyle, isoindolinyle, 1H-indazolyle, 2,3-dihydro-1H-indazolyle, 1H-benzimidazolyle, 2,3-dihydro-1H-benzimidazolyle, ou 1H-benzotriazolyle, substitué par un groupe R?3¿, et éventuellement substitué par au moins un groupe R4 pris indépendamment. R3 appartient au groupe des benzyle, halobenzyle, dihalo- et trihalobenzyle, benzoyle, pyridylméthyle, pyridylméthoxy, phénoxy, benzyloxy, halobenzyloxy, dihalo- et trihalobenzyloxy et benzènesulphonyle. R3 peut également être trihalométhylbenzyle ou trihalométhylbenzyloxy. R3 peut enfin être un groupe représenté par la formule spécifique (a). Dans cette formule spécifique, chaque R5 est indépendamment halogène, C¿1?-C4 alkyle ou C1-C4 alkoxy, n valant de 0 à 3. Chaque R?4¿ est indépendamment hydroxy, halogène, C¿1?-C4 alkyle, C2-C4 alcényle, C2-C4 alkynyle, C1-C4 alcoxy, amino, C1-C4 alkylamino, C1-C4 di[alkyl]amino, C1-C4 alkylthio, C1-C4 alkylsulphinyle, C1-C4 alkylsulphonyle, C1-C4 alkylcarbonyle, carboxy, carbamoyle, C1-C4 alcoxycarbonyle, C1-C4 alcanoylamino, N-(C1-C4 alkyl)carbamoyle, N,N-di(C1-C4 alkyl)carbamoyle, cyano, nitro, et trifluorométhyle. L'invention concerne également les sels et les produits de solvatation pharmaceutiquement acceptables de ces composés, les procédés de préparation de ces derniers, ainsi que les compositions pharmaceutiques qui les renferment et leur utilisation en médecine.
Patent EP-1052993-B1 (EP)
Inventor: GORNY PHILIPPE
IPC: A61K31/535
Filed: 1999-02-12
Granted: 2003-01-02
Abstract: The invention concerns the association of an antagonist of α-adrenergic receptors, for instance yohimbine, and a nitrogen monoxide donor, for instance arginine, with synergistic effect and useful for fighting against female sexual dysfunction.
Patent EP-1064372-B1 (EP)
Inventor: REED STEVEN G
IPC: C12Q1/68
Filed: 1999-03-17
Granted: 2006-11-15
Abstract: Compounds and methods for the treatment and diagnosis of lung cancer are provided. The inventive compounds include polypeptides containing at least a portion of a lung tumor protein. Vaccines and pharmaceutical compositions for immunotherapy of lung cancer comprising such polypeptides, or DNA molecules encoding such polypeptides, are also provided, together with DNA molecules for preparing the inventive polypeptides.
Patent EP-1083171-B1 (EP)
Inventor: CUBERES-ALTISENT MARIA ROSA
IPC: A61P29/00
Filed: 1999-05-27
Granted: 2004-04-28
Abstract: The present invention relates to new pyrazoline derivatives having the general formula (I), as well as to their physiologically acceptable salts, to process in human/veterinary therapy and to pharmaceutical compositions containing them. The new compounds of the invention can be used in the pharmaceutical industry as intermediates and for the preparation of medicaments. In particular, they can be used for the preparation of medicaments used for the treatment of inflammation and other troubles associated to inflammation and other process mediated by cyclooxygenase-2, for example arthritis, pain treatment or fever treatment.
Patent EP-1082401-B1 (EP)
Inventor: LING MICHAEL JOHN ARCHER
IPC: C10J3/26
Filed: 1999-05-27
Granted: 2002-04-17
Abstract: A gasifier for the manufacture of producer gas has a chamber ( 10 ) for the combustion of material, the chamber ( 10 ) being provided with a plurality of tuyeres ( 30 ) for the introduction of combustion air to the chamber. The tuyeres ( 30 ) are disposed at an acute angle to the wall of the chamber ( 10 ) so that air is directed both around and upwardly of the chamber. Each tuyeres ( 30 ) is configured to produce a jet stream wherein the air swirls along the length of the stream.
Patent EP-1070329-B1 (EP)
Inventor: LABATZKE ARMIN
IPC: H01F27/02
Filed: 1999-04-01
Granted: 2002-09-18
Abstract: The invention relates to a ceramic support for electronic components which presents at least two contact surfaces (2) which are electrically insulated in relation to each other. The contact surfaces are arranged on a common plane of the support. The invention is characterized in that other metallized surfaces (3) are positioned on at least one plane of the support which is not parallel to the common plane of the contact surfaces (2). Each metallized surface is connected in a conductive manner to one of the contact surfaces (2). The invention also relates to the use of the support for inductive components and to a method for producing such a component.
Patent EP-1090102-B1 (EP)
Title: Verfahren zur herstellung von entschäumergranulaten
Inventor: SCHMID KARL HEINZ
IPC: C11D11/00
Filed: 1999-06-15
Granted: 2002-03-13
Abstract: Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Silikon enthaltenden Entschäumergranulaten für feste Waschmittel durch gleichzeitige Granulation und Trocknung, wobei die Silikone in Form von wäßrigen Emulsionen aufgesprüht werden auf ein zugemischtes Vorprodukt aus Trägermaterialien und ggf. weiteren Entschäumern unter gleichzeitiger Granulation und Trocknung, insbesondere nach dem SKET-Verfahren. Die Entschäumergranulate können in festen Waschmitteln verwendet werden.
Patent EP-1097338-B1 (EP)
Inventor: WIRTH ANTON
IPC: F16L59/10
Filed: 1999-07-14
Granted: 2002-05-02
Abstract: The invention relates to an insulation for insulating components (2, 15) having curved outer surfaces (6) which are closed about at least one component axis. Said insulation comprises a jacket (1) made of wire and long-fibre insulating material (9) arranged therein, whereby the partial surface of the jacket (1) facing the component (2, 15) forms the inner liner (5) and the partial surface of the jacket (1) facing outwards forms the outer liner (4). The inner liner (5) at least in certain areas can be placed against the outer surface (6) of the component (2, 15). When assembled the jacket (1) extends across the entire circumferential surface of the closed outer surface (6) and the inner liner (5) and the outer liner (4) are preferably each configured as a single piece. Jackets (1) with insulating material (9) which enclose components (2, 15) have good thermal and acoustic insulation properties and, using modern manufacturing methods for textile materials, can be configured for differently shaped components (2, 15). In case of complicated components (2, 15), especially components having outlets or whose cross sections increase and decrease in a particular direction, insulation elements having at least one longitudinal gap (18) are used so that said insulation can easily be fitted on the component (2, 15).
Patent EP-1053364-B1 (EP)
Inventor: ALPER MARK D
IPC: A61F13/472
Filed: 1999-02-08
Granted: 2002-08-28
Abstract: L'invention concerne un procédé relatif à l'utilisation de l'énergie micro-onde dans la fabrication d'articles absorbants non-tissés jetables (par exemple, couches de bébé et produits d'hygiène féminine). Plus précisément, l'invention concerne l'utilisation d'adhésifs sensibles à l'énergie micro-onde, destinés à être substitués aux adhésifs thermofusibles classiques, pour la fabrication d'articles absorbants non-tissés jetables. On peut donc activer ces adhésifs via ladite énergie, ce qui confère de la solidité aux liaisons des produits finis considérés.
Patent EP-1091933-B1 (EP)
Inventor: AHO PAEIVI
IPC: A61K31/12
Filed: 1999-06-30
Granted: 2003-11-26
Abstract: The invention relates to the compounds of formula I:wherein one of X1 and X2 is MeSO2 and the other one is hydrogen or halogen and X3 is hydrogen or halogen. These compounds have been found to be useful in the prevention and the treatment of respiratory diseases, especially asthma, ARDS (Acute Respiratory Distress Syndrome), COPD (chronic obstructive pulmonary diseases), allergic rhinitis and related inflammatory conditions. More specifically, the invention relates to the use of said compound in the prevention and the treatment of asthma in steroid-resistant patients. The invention also relates to pharmaceutical formulations used in the treatment of said diseases.
Patent EP-1110049-B1 (EP)
Inventor: CLODIC DENIS
IPC: A47C7/74
Filed: 1999-08-31
Granted: 2003-12-10
Abstract: The invention concerns a method using a flexible exchanger with heat-pipe effect for controlling the temperature of a plane and/or skew surface walls. The method comprises at least the following steps: applying on said surface (4, 5) a flexible envelope (6) consisting of a layer (30) delimiting a sealed chamber (31) of slight thickness with respect to its width; inserting into said chamber (31) a fluid (32) under vapour pressure, in particular water; carrying out a heat exchange between said fluid and outside air using at least one cool source (7) and/or one hot source (20) in thermal contact with the flexible envelope. Said method can in particular be used to produce a transport vehicle seat.
Patent EP-1112112-B1 (EP)
Inventor: OCHI YASUSHI
IPC: A63G21/20
Filed: 1999-09-02
Granted: 2004-11-03
Abstract: A cable driven ride includes at least one carriage configured to receive and support an motorized passenger vehicle filled with at least one passenger and move with a cable as the cable is moved between at least one terminal and a tower, the cable extending therebetween.
Patent EP-1109515-B1 (EP)
Inventor: BACCELLI CHRISTIAN
IPC: A61L27/00
Filed: 1999-09-03
Granted: 2004-12-22
Abstract: The invention concerns an implant comprising a body with an upper surface and a lower surface capable of pressing on the vertebral end-plate located immediately above and beneath and having further at least a through aperture emerging on the upper and lower surfaces. The invention is characterized in that the implant further comprises an anchoring member mounted in such a way as to be capable of moving in the aperture. The said anchoring member includes a support part adjacent to a first vertebral end-plate, and at least a projecting anchoring element extending from the support part towards the opposite vertebral end-plate. Thus, when the implant is compressed between the vertebral end-plates, the anchoring member is stressed by the first vertebral end-plate at the support part to move relative to the body and the at least providing projecting element overlaps the body surface facing the opposite vertebral end-plate and is anchored therein. The invention is particularly applicable to bone fusion between cervical vertebrae.
Patent EP-1123094-B1 (EP)
Inventor: VEECH RICHARD L
IPC: A61P25/28
Filed: 1999-09-15
Granted: 2007-04-11
Abstract: Method of producing a physiologically acceptable ketosis such as to treat a patient in need of therapy for one or more of Amylotrophic lateral sclerosis, Free Radical disease, Heart failure and Duchenne's muscular dystrophy by oral administration to the patient of a cyclic oligomer of formula (I) where n is an integer of 1 or more or a complex thereof with one or more cations or a salt thereof, wherein the physiologically acceptable ketosis is characterized by blood levels of (R)-3-hydroxybutyrate of from 0.5 to 20 mM.
Patent EP-1127097-B1 (EP)
Inventor: BUXHOFER HORST
IPC: C09J131/04
Filed: 1999-10-27
Granted: 2004-08-18
Abstract: The aim of the invention is to simplify the production of conventional rubber adhesives based on stabilized polyvinyl acetate dispersions and to improve the drying and adhesive properties thereof. To these ends, the concentration of the protective colloid polyvinyl alcohol or starch ether is increased without adding an aqueous polymer solution of polyvinyl alcohol or dextrin. Adding an interfacially active substance accelerates the activation of the adhesive after drying the same at temperatures above 160  DEG C.
Patent EP-1147697-B1 (EP)
Inventor: BERGSTROEM JOHAN
IPC: H05K/
Filed: 1999-12-22
Granted: 2005-02-02
Abstract: A method of transferring component tape information to a component mounting machine, a tape guide for guiding a component tape in a component mounting machine, and a tape magazine for receiving the tape guide. The tape guide is arranged for quick and ready attachment and detachment into and from the component mounting machine. The loading and/or unloading of a component tape into and from the tape guide can be performed away from the component mounting machine. The ability to be releasably mounted is achieved by providing the tape guide with a lock that enables ready and quick attachment and detachment to an interacting lock in a component mounting machine, or in a tape magazine arranged for insertion into a component mounting machine, and a guide for guiding the component tape. The tape guide further includes an identifier for holding the identity of the tape guide, which can be associated with information relating to the component tape.
Patent EP-1137019-B1 (EP)
Inventor: NARAYA KAZUNORI
IPC: H01G9/02
Filed: 1999-09-29
Granted: 2007-07-11
Abstract: Using as the cathode foil, an etched aluminum foil with TiN film formed thereon by cathode arc plasma deposition process and using as the anode foil, an etched aluminum foil with a dielectric film formed on the surface thereof, as produced by subjecting the surface of the etched aluminum foil to a chemical treatment by a method of related art. Winding the anode foil together with the cathode foil and a separator, a capacitor element is formed; then immersing the capacitor element with EDT monomer and additionally with 40% to 60% ferric p-toluenesulfonate, the resulting capacitor element is heated at 20 DEG C to 180 DEG C for 30 minutes or more. Subsequently, the surface of the capacitor element is coated with a resin, for aging.
Patent EP-1141062-B1 (EP)
Inventor: SANDERSON ANDREW JOHN
IPC: C08G18/50
Filed: 1999-11-09
Granted: 2003-02-12
Abstract: Cette invention concerne un élastomère thermoplastique à l'état sensiblement solide qui peut être utilisé comme liant dans l'agent propulseur, l'explosif, et/ou le générateur de gaz d'un système de retenue supplémentaire. Ledit élastomère thermoplastique est formé à partir d'une composition chimique comprenant des blocs A, de nature cristalline à des températures inférieures à 75 °C environ, et des blocs B, amorphes à des températures supérieures à20 °C environ. Les blocs A proviennent de composés dérivés de l'oxétane et/ou de composés dérivés du tétrahydrofurane. Les blocs B proviennent de l'oxétane, du tétrahydrofurane, des oxyranes et de leurs composés dérivés. Les blocs A et B possèdent au moins un diisocyanate en bout de chaîne et sont liés à au moins un oligomère bifonctionnel possédant deux groupes fonctionnels qui réagissent avec les groupes fonctionnels isocyanate libres et n'ayant pas réagi du diisocyanate.
Patent EP-1124594-B1 (EP)
Inventor: BRANDAU WOLFGANG
IPC: A61K9/00
Filed: 1999-11-02
Granted: 2003-01-08
Abstract: The invention relates to an implant and a method for the production of an implant. The implant has a covering layer that is preferably made of aluminium oxide and provided with uniform cavities and separate openings on the surface side of the covering layer in order to receive a therapeutic agent which can be released according to requirements when the implant is in place.
Patent IT-1278693-B1 (IT)
Title: Process for the single firing of clay material and dark- coloured ceramic material from grey to black so obtained
Inventor: COLZI DARIO
IPC: B28B/
Filed: 1995-06-05
Granted: 1997-11-27
Abstract: A process for the production of dark-coloured ceramic material from grey to black, from clay material and ceramic material so obtained, starting from calcareous, ferruginous, siliceous and similar clay, which is shaped into the desired shapes, dried and then fired in a furnace at temperatures between 750 and 1100 degree C under conditions of oxygen deficiency. This condition is achieved by creating a degree of vacuum in a container, or also at atmospheric pressure, with progressive expulsion of the air from the container by the internal gases which form during firing. The manufactured articles fired may be placed in hermetically sealed metal containers with a vent valve wrapped in a layer of drawing paper. The darkest grey to black can be obtained by adding organic substances such as organic flour, sawdust or organic oils. The process makes it possible to obtain a fired article of a dark colour, in particular dark grey to black, from the clay materials which are normally used for the manufacture of conventional terracotta, and which have mechanical and technological properties which are superior to those of conventional terracotta.
Patent IT-1276354-B1 (IT)
Title: Device for the disposal of solid urban wastes and special wastes in a controlled environment with recovery of the biogas produced
Inventor: BELLINGHIERI ANTONINO
Filed: 1994-01-18
Granted: 1997-10-30
Abstract: The device according to the invention comprises the provision of a double enclosure of impermeable materials. The first enclosure is produced by the in situ excavation of impermeable ground. The second enclosure, which is functionally located coaxially with the former, comprises positioning a perfectly sealed polymer geomembrane. Subsequently the cementitious mixture with additives is injected into the intermediate layer between the first and second enclosure under controlled pressure in order to saturate every void present between the two enclosures and at the same time produce a rigid protective structure supporting the geomembrane. The device is completed by sealing the upper part of the two enclosures with a perfectly leaktight seal through a collar and a cover of metal material. A valve which opens and closes for the recovery of biogas is fitted to the cover. <IMAGE>
Patent IT-1277168-B1 (IT)
Inventor: CARRARA SERGIO
IPC: F16J15/22
Filed: 1995-03-20
Granted: 1997-11-05
Abstract: PCT No. PCT/EP96/01045 Sec. 371 Date Sep. 18, 1997 Sec. 102(e) Date Sep. 18, 1997 PCT Filed Mar. 12, 1996 PCT Pub. No. WO96/29455 PCT Pub. Date Sep. 26, 1996A method for producing packing for the stuffing of boxes, among other purposes. In one embodiment, the packing enables compressive forces to be transmitted uniformly from a gland along an entire winding of the packing so as to eliminate stresses within the packing itself. The method includes a step in which elementary yarns converge to form the packing at an assembly point and a step in which the packing is wound into a coil starting at the assembly point.
Patent IT-1276334-B1 (IT)
Title: Biologically active compound obtained from Pseudomonas and corresponding production and purification process
Inventor: SATTA GIUSEPPE
Filed: 1994-10-24
Granted: 1997-10-28
Abstract: An active principle having antimycotic and antiviral activity has been isolated from a strain of Pseudomonas sp. The active substance has been extracted and purified from the culture broth and has the following structural formula: <IMAGE> (I). Studies on biological activity have demonstrated that the compound of formula I has a marked antiviral action against herpes viruses (Herpes simplex 1 and 2); it also has marked anti-Candida and anti-Protozoaria activity.
Patent JP-2951639-B1 (JP)
Title: 耐候性ポリオレフィン樹脂およびその製造方法、ならびに耐候性樹脂組成物
IPC: C09K3/00
Filed: 1998-05-08
Granted: 1999-09-20
Abstract: 【要約】
【課題】樹脂成形品からの紫外線吸収剤の揮散やブリー ドアウト等がなく、長期にわたり優れた耐候性を示すポ リオレフィン樹脂およびその製造方法、ならびに耐候性 樹脂組成物を提供することにある。
【解決手段】カルボキシル基含有変性ポリオレフィン に、水酸基またはヒドロキシアルキル基を有する（Ａ） ベンゾトリアゾール系紫外線吸収剤、（Ｂ）ビスベンゾ トリアゾール系紫外線吸収剤および（Ｃ）トリアジン系 紫外線吸収剤からなる群より選ばれた少なくとも一種で ある紫外線吸収剤を、エステル結合を介して固定化した 耐候性ポリオレフィン樹脂。該ポリオレフィン樹脂をベ ース樹脂に含有させた樹脂組成物である。
Patent JP-2987584-B1 (JP)
Title: 摂食刺激組成物
IPC: A01N25/00
Filed: 1998-09-17
Granted: 1999-12-06
Abstract: 【要約】
【課題】  衛生害虫に対しての摂食刺激活性が極めて高 い摂食刺激組成物を提供すること。
【解決手段】  オリゴ糖とリン脂質とを有効成分として 含有する摂食刺激組成物。
Patent JP-3036528-B1 (JP)
Title: 手動変速レンジ付き自動変速機の変速制御装置
IPC: F16H61/18
Filed: 1998-10-08
Granted: 2000-04-24
Abstract: 【要約】
【課題】  足放しアップシフト中にＤ→Ｍレンジ切り換 えして再踏み込みを行う時、飛び越しアップシフトが発 生して発熱の問題を生ずるのを回避する。
【解決手段】  足放し１→４変速指令瞬時ｔ 1  から１→ ４変速時間をかけて行われる変速中の瞬時ｔ 2  にＤレン ジからＭレンジへ切り換えると共に瞬時ｔ 3  にアクセル ペダルの再踏み込みがなされた場合、指令ギヤ位置ＧＰ   NEXT はＤ→Ｍレンジ切り換え瞬時ｔ 2  には未だ手動変速 レンジ用のギヤ位置を用いるため４速のままであるが、 再踏み込み瞬時ｔ 3  にはこれに代え、Ｄレンジ用のダウ ンシフト変速線から求めた自動変速レンジ用ギヤ位置を 指令ギヤ位置ＧＰ NEXT とするため、このＧＰ NEXT はダウ ンシフト変速線を横切る度に３速、２速、１速へと順次 低速側ギヤ位置へと変化する。しかし指令ギヤ位置ＧＰ   NEXT の変化は変速応答遅れにより実際の変速に反映され ず、自動変速機は現在の選択ギヤ位置ＧＰ NOW  の時系列 変化から明らかなように１速に保たれ、飛び越し変速を 発生しない。
Patent JP-3028952-B1 (JP)
Title: 簡易型位置情報通知システム及び簡易型位置情報文字メールサービス方法
IPC: H04W4/02
Filed: 1998-12-18
Granted: 2000-04-04
Abstract: 【要約】
【課題】  本発明は、プライバシーへの影響を排除で き、ユーザサービスの質向上を計ることができ、網内の トラヒックへの影響を軽減した簡易型位置情報通知シス テム及び簡易型位置情報文字メールサービス方法を提供 することを課題とする。
【解決手段】  位置情報編集装置６０１は、信号網４０ ０に対して入力側に位置しサービス制御局５００及び加 入者交換機７００との通信を行う信号網通信ＩＦ手段６ ０２と、信号網４００に対して出力側に位置する信号網 通信ＩＦ手段６０６と、位置情報や識別情報を取得する ＩＤ・位置情報収集手段６０３と、位置情報を代表地名 に変換する位置情報−代表地名変換手段６０４と、代表 地名を定型文に挿入して編集する文字メール編集手段６ ０５と、制御機能を管理する文字メール制御手段６０７ を備える。
Patent NO-325408-B1 (NO)
Inventor: KLATTENHOFF JUERGEN
IPC: G01R17/00
Filed: 2000-08-25
Abstract: The transducer has measurement, compensation and counter electrodes connected to a measurement circuit with two test resistances in series in one arm of a measurement bridge. A second bridge arm contains the measurement resistance between the measurement and counter electrodes in series with the compensation resistance between the compensation and counter electrodes. A diagonal (26) between these arms (21,22) has a test switch (27) closed by a controller (13) outside defined test periods and opened during the test periods. An Independent claim is also included for a controller for a test switch.