baber/WOPTO huggingface dataset:
Patent EP-0323885-A1 (EP)
Inventor: GRIFFITHS NIGEL DAVID
IPC: C07D257/04
Filed: 1989-01-04
Abstract: A process for the preparation of a di(alkali metal) salt of tetrazole-5-carboxylic acid comprises the reaction, in an anhydrous tertiary amine base medium containing a strong acid, of an alkali metal azide with an alkyl cyanoformate followed, without isolation of the alkyl tetrazole-5-carboxylate thus produced, by reaction in situ with an alkali metal hydroxide: the alkali metal salt of tetrazole-5-carboxylic acid obtained can be used to prepare pharmaceuticals.
Patent EP-0345057-A1 (EP)
Inventor: WINDORSKI DAVID C C O MINNESOT
IPC: B42D5/00
Filed: 1989-06-01
Abstract: A dispenser (60) for sheets (11) of note paper disposed in a stack (9) with each of the sheets (11) having a narrow band of adhesive coated on one surface along one edge by which the sheets (11) are adhered together and with the sheets (11) being stacked with the band of adhesive of adjacent sheets at alternate opposite edges of the stack (9). The dispenser (60) comprises a base (61) having a top surface with a generally planar support surface portion (63) adapted to support a lower surface of the stack (9). Also included is a body (64) having a bottom surface including spaced pressure surface portions (66) adapted to engage and be supported on an upper surface of the stack (11) adjacent the edges of the sheets along which the narrow bands of adhesive are coated with the spaced pressure surface portions (66) engaging the upper surface of the sheets (11) at predetermined distances from the edges of the sheets along which the narrow bands of adhesive are coated, and convex arcuate surface portions (67) between the pressure surface portions (66) and a top surface (65) defining a slot (68) through and extending centrally across the body (64). The convex arcuate surface portions (67) have radii with a dimension at least as large as the predetermined distances to restrict curling of sheets of paper pulled from the dispenser (68) through the slot (68), and the body (64) has sufficient weight to afford pulling a sheet (11) from the stack (9) through the slot (68) without substantially lifting the body (64) from the stack (9).
Patent EP-0358312-A1 (EP)
Inventor: WHITFORD DARRYL ROSS
IPC: B05B15/04
Filed: 1989-07-03
Abstract: A cross-flow spraying method comprising creating an air stream by a fan (15), spraying a crop (18) with a spray liquid (23) injected into the air stream (17) and passing the spray airborne by the air stream (17) across the crop (18), receiving some at least of airborne overspray in a suction hood (20) located at the lee side of the crop (18) and recirculating the spray liquid (23). The air outlet from the suction hood (20) may be redirected to the inlet side (27) of the fan (15), or the suction hood (20) may have its own exhaust fan, and surfaces which precipitate the spray liquid (23). By utilising suction as well as pressure, the leaves of vegetation (18) flutter and become more fully covered with the spray liquid (23). Loss of liquid (23) due to overspray is reduced.
Patent EP-0368444-A1 (EP)
Inventor: TAKEUCHI MASAHIRO C O SEIKO EP
IPC: H01L29/10
Filed: 1989-08-10
Abstract: A semiconductor device comprising a semiconductor substrate (101) of a first conductive type having a first concentration of impurities therein; a first impurity layer (104) of said first conductive type which is formed in said semiconductor substrate (101) and which has a second concentration of impurities therein at a concentration higher than that of the said first concentration; a gate electrode (105) formed on said semiconductor substrate (101) by way of a first insulating film (103); a second impurity layer (106) of a second conductive type portions of which are formed in said semiconductor substrate (101) on opposite sides of said gate electrode (105) so as to be spaced apart from each other, the second impurity layer (106) having a third concentration of impurities therein; a side wall insulating film or films (108) each of which is formed on a side wall of said gate electrode (105); and a third impurity layer (109) of said second conductive type which is formed in said semiconductor substrate (101) laterally of said side wall insulating film or films (108), the third impurity layer (109) having a fourth   concentration of impurities therein which is higher than said third concentration characterised in that the first impurity layer (104) is formed in the semiconductor substrate (101) so as to be spaced apart from a surface (101a) of the latter, the impurities in the first impurity layer (104) being at a first depth from the said surface (101a) of the semiconductor substrate (101), the second impurity layer (106) having impurities therein at a second depth from the said surface (101a) of the semiconductor substrate (101), the surface (106a) of the second impurity layer (106) which is lowermost when the said surface (101a) of the semiconductor substrate (101) is at the top of the device abutting the first impurity layer (104) or being disposed above the latter.
Patent EP-0367437-A1 (EP)
Inventor: MOODY GILLIAN MARY
IPC: C01F7/47
Filed: 1989-10-13
Abstract: Red mud in Bayer process liquors are flocculated using dextran and synthetic anionic polymer in the same stage, usually added separately to the liquor. The liquor may be the primary settler slurry, the secondary clarification liquor or one or more of the red mud washing stages. The process is of particular advantage where the liquors are high in carbonate content and/or total alkalinity.
Patent EP-0356276-A1 (EP)
Inventor: BOUVERET JEAN-MICHEL
IPC: F16H48/30
Filed: 1989-07-25
Abstract: The present invention relates to a differential system with variable slip. The system is characterised in that it comprises an internal casing (9) enclosing the pinions (10-12) of the differential (1), made in a single block at least in the axial direction parallel to the longitudinal axis X-X' of the output shafts (3, 4) of the differential (1) and coupled to the external casing (2), being capable of sliding axially in the latter so as to transmit directly the variable clamping force to the discs (17) of a clutch means. The present invention finds application in particular for the driving of the wheels of a motor vehicle axle. <IMAGE>
Patent EP-0369835-A1 (EP)
Title: Interdigital transducer for an SAW filter
Inventor: DUFILIE PIERRE
IPC: H03H9/02
Filed: 1989-10-10
Abstract: The width of the frequency band of an interdigital transducer serving as coupling transducer in a SAW filter having low insertion losses, is reduced. At least the distance between the axis of a first digit (D1) of a first comb (PE1) which is central to the transducer, and a second digit (D2) of a second comb (PE2) adjacent to the central digit, is equal to R lambda o/2.  lambda o is the central wavelength. R is an integer strictly greater than 1. The distances between the axes of the other first and second digits are at least equal to R lambda o/2. Compared to the prior art, an increase in the optimal length of a coupling transducer by reducing the number of active digits per unit length, is achieved. Depending on the reduction factor chosen, the frequency band of the transducer will be all the narrower. 
<IMAGE>
Patent EP-0369868-A1 (EP)
Inventor: SZOBOSZLAI ISTVAN
IPC: G01R15/12
Filed: 1989-11-10
Abstract: Apparatus for measuring various electrical variables comprising a first measuring path (1), means (4, 6) for selecting a variable to be measured by the said path and of displaying means the measured variable, characterised in that it comprises at least one additional path (2) for the simultaneous measurement of an electrical variable different from that measured by the first path and display means intended to display the value of the variable measured by the said additional measuring path simultaneously with the displaying of the variable measured by the first path (1), a microprocessor (16) being associated with the said measuring paths (1, 2) with the means of selecting variables (4, 6, 10, 12) to be measured and with the display means in order to ensure the reading of the output signals from the measuring paths and the control of the displaying of the values of the measured variables on the said display means. <IMAGE>
Patent EP-0396753-A1 (EP)
Inventor: YOSHIKAWA HIDEO
IPC: F01N1/24
Filed: 1989-03-01
Abstract: On produit un silencieux léger et durable ne provoquant pas de pollution secondaire et présentant un effet marqué d'amortissement sonore, en entassant ou en chargeant un assemblage de fibres de carbone en vrac dans le corps principal d'un silencieux contre le bruit des gaz d'échappement d'un moteur à combustion. Le corps principal (1) de ce silencieux comporte un orifice d'admission de gaz d'échappement (2) et un orifice de sortie (3).
Patent EP-0408657-A1 (EP)
Inventor: WOODRUFF DAVID C
IPC: G02B26/02
Filed: 1989-03-17
Abstract: Le mécanisme obturateur décrit comporte un électro-aimant et une lame ferromagnétique flexible (30, 64) montés serrés en V l'un par rapport à l'autre au niveau d'une extrémité opposée à une source lumineuse, un passage de lumière (32, 66) étant ménagé entre les deux. L'électro-aimant présente un noyau cylindrique (34, 68) comportant des pôles (38 et 40, 74 et 76) définissant des tranches longitudinales et un enroulement de fils toroïdal (36, 70) autour du noyau. Lorsque l'aimant est activé, l'extrémité libre de la lame fléchit en direction des pôles, fermant le circuit magnétique et ouvrant ou fermant l'obturateur. Dans un mode de réalisation normalement ouvert, la trajectoire de la lumière passe entre les pôles magnétiques (74 et 76), et la lame (64), qui est normalement parallèle à la trajectoire (66) du faisceau, fléchit vers le bas de façon à arrêter le faisceau. Dans un mode de réalisation normalement fermé, lorsque la lame (30) s'infléchit, la trajectoire de la lumière (32) passe à travers une fente (52) ménagée dans une plaque d'appui (46) contre laquelle repose normalement la lame. Le mode de réalisation normalement fermé comporte une languette photo-absorbante (54) entre les pôles (38 et 40) qui se combine avec la lame réfléchissante pour définir un intercepteur de lumière. Dans le mode de réalisation normalement ouvert, la lame se combine avec une plaque d'appui sans fente photo-absorbante (80) pour définir l'intercepteur de lumière.
Patent EP-0417192-A1 (EP)
Inventor: KELLER CARL E
IPC: G01L5/14
Filed: 1989-05-26
Abstract: Est décrite une jauge de contrainte dont les constituants comportent un détecteur piézorésistif (3) noyé dans une résine époxy, un vérin plat (5), et un boîtier (1) destiné au détecteur et au vérin. Le détecteur piézorésistif préféré est en ytterbium en raison de sa sensibilité aux pressions dans la plage étudiée.
Patent EP-0394495-A1 (EP)
Inventor: MARUYAMA SATOSHI SHOWA DENKO K
IPC: C07C327/22
Filed: 1989-10-20
Abstract: 4,4'-Bis(methacryloylthio)diphenyl sulfide represented by formula (I) and two curable compositions containing same are disclosed. One composition comprises (A) the sulfide of formula (I) and (B) at least one compound selected from the group consisting of other vinyl monomers (i) copolymerizable with the sulfide of formula (I) and polythiols (ii) represented by the formula (II): R-(SH)n (wherein R represents a polyvalent organic group, and n represents an integer of 2 or more). Another curable composition comprises (A) a prepolymer having a polythioether skeleton and being obtained by the addition reaction between the sulfide of formula (I) and polythiols (ii) of formula (II), and (B) other vinyl monomer (i) copolymerizable with the sulfide of formula (I).
Patent EP-0395963-A1 (EP)
Title: Vorrichtung zum Steuern des Vorschubs eines schrittweise vorschiebenden Vorschubapparates
Inventor: MESSNER HELMUT
IPC: F16H19/08
Filed: 1990-04-20
Abstract: Das treibende Zahnrad (77) kämmt mit dem Zahnrad (79) auf dem Steg (78) eines Umlaufgetriebes. Dieses weist ein arretierbares Sonnenrad (81) auf. Das Abtriebssonnenrad (82) ist mit der Antriebswelle (11) fest verbunden. Diese verläuft durch einen Büchsenabschnitt (83) des Steges (78). Auf diesem Büchsenabschnitt (83) sitzt eine längsverschiebbare Schiebebüchse (84) mit mehreren Steuerscheiben (85). Diese steuern über eine Rolle (10) die Wippbewegung der oberen Vorschubwalze (3). Damit lässt sich die Periode der Wippbewegung abhängig von der jeweils gewählten Steuerscheibe (85-88) wählen. Die Schiebebüchse (84) lässt sich bei freigegebenem Sonnenrad (81) zum Direkteingriff mit der Antriebswelle (11) bringen, so dass durch Wahl von verschiedenen Anordnungen zwischen einem 1:2 und 1:1 Drehzahlverhältnis gewählt werden kann.
Patent EP-0461283-A1 (EP)
Inventor: CAEMMERER FRANK
IPC: H01H13/14
Filed: 1990-06-13
Abstract: The invention relates to a key element for a key panel of an electronic keyboard having a multiplicity of keys, arranged side-by-side, and guides which are protected against rotation. Using simple technical means, the invention results in forced alignment of the individual key knobs (1) of a key panel in their quiescent position and heavy damping of the bouncing noises in the end positions of the key elements, as a result of an advantageously designed elastic pressure piece (3), which ensures a virtually constant contact switching force irrespective of the force with which the key is hit. While the mutual alignment of the keys (1) is achieved by means of slight tilting, the pressure element (3, 1) for the switching contact is arranged very flexibly on the pressure piece (3), by means of a membrane (3, 4). <IMAGE>
Patent EP-0405579-A1 (EP)
Inventor: AMANO TSUTOMU
IPC: C03C3/087
Filed: 1990-06-29
Abstract: Disclosed is a glass bottle formed of a glass composition comprising 
45 to 70% by weight of SiO₂, 
5 to 16% by weight of ZrO₂, 
10 to 30% by weight of R¹₂O, 
up to 12% by weight of R²O, and 
up to 5% by weight of R³₂O₃ 
wherein R¹ represents an alkali metal, R² represents a divalent metal, and R³ represents a trivalent metal.
Patent EP-0411616-A1 (EP)
Inventor: BERGMEIER STEPHEN CLARK
IPC: C07D211/14
Filed: 1990-08-01
Abstract: 4-(N-Substituted amino)-2-butynyl-1-carbamates and thiocarbamates of Formula I
      are described, as well as methods for the preparation and pharmaceutical compositions of same, which are useful as centrally acting muscarinic agents and are useful as analgesic agents for the treatment of pain, as sleep aids and as agents for treating the symptoms of senile dementia, Alzheimer's disease, Huntington's chorea, tardive dyskinesia, hyperkinesia, mania, or similar conditions of cerebral insufficiency characterized by decreased cerebral acetylcholine production or release.
Patent EP-0411631-A1 (EP)
Inventor: CARR ALBERT A
IPC: A61P25/00
Filed: 1990-08-02
Abstract: The present invention is directed to a new class of therapeutic agent of the formula:
      in which Y is represented by CO or CHOH; T is represented by CO or CHOH; X is represented by hydrogen or a C₁₋₆ alkyl; n is represented by the integer 3 or 4; R and R₁ are each independently represented by hydrogen, C₁₋₆ alkyl, C₁₋₆ alkoxy, halogen, -OH or -CF₃; and pharmaceutically acceptable acid addition salts thereof, which are useful as anti-psychotic agents and as analgesics.
Patent EP-0434911-A1 (EP)
Inventor: KABELITZ HANS-PETER DR
IPC: F04D29/06
Filed: 1990-09-27
Abstract: The invention relates to a blower or pump (1) with a rotor (11), with a rotor shaft (12) arranged essentially vertically during operation, with a housing (3) arranged below the rotor, in which housing are located a drive motor (13), shaft bearings (14, 15) and an oil sump (21), and with a discharge line (31) passing through the wall of the housing (3) for connection of a vacuum pump to the housing inner chamber (18); in order to avoid the risk of an oil deficiency in the motor and bearing chamber, it is proposed that the discharge line (31) and the oil sump (21) be directly connected to one another. 
<IMAGE>
Patent EP-0433917-A1 (EP)
Inventor: SIEGENTHALER KARL J
IPC: B29D30/48
Filed: 1990-12-14
Abstract: An automotive tire bead (1) consisting of a substantially circular-section annular element (2) formed from a continuous metal wire (3) wound in such a manner as to form a number of packed coils (5); which coils (5) are arranged over a substantially circular section of annular element (2) according to a given law, and are held together by a wire (7) of heat-shrinkable material wound about annular element (2) and having opposite ends (9) joined together.
Patent EP-0437758-A1 (EP)
Inventor: FRENZEL ANTON
IPC: H02B1/14
Filed: 1990-12-17
Abstract: In a switch or outlet box, which is intended especially for use on the distributing busbars of low-voltage switchgear, and which is split into an apparatus space and a connecting space, it is necessary to design the latter such that reliable operation, without needing to be touched, is possible in the client's connection space even when the output box as such is still connected to live parts. This is achieved in that the apparatus space has a fuse carrier, which can be removed towards the front side of the metal housing and has a supporting plate by means of which the fuse support rests at the edges on an intermediate base which covers the apparatus space and has an opening for the insertion of the fuse support, and in that the connection space is closed by a sliding cover, which is guided displaceably on the housing in the same plane as the supporting plate of the fuse support in such a manner that, once the fuse support is removed from the intermediate base via the opening which is then exposed for insertion of the fuse support, it can then be displaced so far that it completely closes this opening and exposes the connection space for work on the load connection busbars and the like located therein. <IMAGE>
Patent EP-0391680-A1 (EP)
Inventor: BEEVOR ROBERT GEORGE
IPC: C07C51/12
Filed: 1990-04-04
Abstract: A process for preparing a carboxylic acid having (n+1) carbon atoms (e.g. acetic acid) from an alcohol having n carbon atoms (e.g. methanol) by liquid phase, rhodium catalysed carbonylation is provided. The process is characterised by using a catalyst stabiliser selected from certain classes of imidazolium iodides, alkyl substituted pyridinium iodides and hydroxypyridinium iodides. Most preferred are those derived from the amines 2-ethyl-4-methylimidazole, 4-methylimidazole, 4-ethylpyridine, 4-t-butylpyridine and 3,4-lutidine by quaternisation with a methyl group.
Patent EP-0393909-A1 (EP)
Inventor: JAMES KENNETH WILLIAM BEECHAM
IPC: A61P1/12
Filed: 1990-04-10
Abstract: A pharmaceutical composition (preferably in reconstitutable form) comprising loperamide or a pharmaceutically acceptable salt or pro-drug thereof (e.g. its hydrochloride acid addition salt) and an oral rehydration agent such as a sugar, an oral rehydration salt, or an amino acid (especially a mixture of glucose, one or more chloride salts, and a bicarbonate or a citrate salt) in admixture or conjunction with a pharmaceutically acceptable carrier or excipient is useful in the treatment of diarrhoea. The loperamide may be used in 0.5 to 10 mg per unit dose, and the oral rehydration agent in 0.1 to 10 g per unit dose.
Patent EP-0451394-A1 (EP)
Title: Mtbe preparation from isobutylene/tba and methanol in presence of an acid resin catalyst
Inventor: HAGAN JOHN JOSEPH
IPC: B01D3/00
Filed: 1990-04-11
Abstract: Methyl tertiary butyl ether (MTBE) can be produced by reacting methanol with isobutylene, tertiary butyl alcohol (TBA), or preferably a mixture of isobutylene and TBA, in a distillation column packed with a sulfonic acid resin catalyst. The reaction proceeds substantially to completion and MTBE is distilled from the column with good purity.
Patent EP-0409638-A1 (EP)
Inventor: SMITH TERRANCE P C O MINNESOTA
IPC: C09B1/473
Filed: 1990-07-20
Abstract: New anthraquinone dyes, free of water-solubilizing groups such as -SO₃H and -CO₂H comprise anthraquinone substituted with one or more identical or different groups of the formula -NHSO₂R, wherein R is a substituted or unsubstituted linear, branched, cyclic or polycyclic alkyl group having up to 20 carbon atoms, and wherein the remaining nuclear aromatic carbon atoms of the anthraquinone may be substituted with substituents selected from the group: alkyl; the halogens F, Cl, and Br; cyano; nitro; aminosulfonyl; arylsulfonylamino; and -NHCOQ; wherein Q is hydrogen, an alkyl, an aryl, or a heterocyclic group. 
     These dyes have improved solubility, lowered melting point, and possess outstanding resistance to light-induced fading.
Patent EP-0410752-A1 (EP)
Inventor: LOK ROGER C O EASTMAN KODAK CO
IPC: C07D277/62
Filed: 1990-07-26
Abstract: Latent image stability is enhanced in photographic recording materials using ester containing N-alkyl- or N-alkenylbenzothiazolium or -benzoselenazolium salts.
Patent EP-0433175-A1 (EP)
Inventor: FOOS JACQUES
IPC: G21C19/46
Filed: 1990-12-13
Abstract: Recovery of Pu(IV) by means of crown ethers. …<??>According to the invention the aqueous solution containing plutonium(IV) is placed in contact with at least one crown ether, for example DCH 18C6, in solution in an organic diluent such as benzonitrile. In the case where the solution contains only traces of Pu it is possible employ a crown ether fixed on a solid phase, for example on silica. …<??>The aqueous solution is a concentrated solution of fission products, an effluent originating from a plant for reprocessing irradiated nuclear fuels or a concentrated solution of plutonium with americium. …<IMAGE>…
Patent EP-0461333-A1 (EP)
Inventor: GUARNIERI DECIMO
IPC: A61K8/34
Filed: 1990-06-11
Abstract: Phospholipidic liposomes containing active principles which can be released in a regulated manner and a process for the production of some phospholipidic liposomes are described.
Patent EP-0474671-A1 (EP)
Inventor: MARTIN FREDERICK L
IPC: G01R25/00
Filed: 1990-05-17
Abstract: Un détecteur de phase numérique (500) produisant une sortie (520) et caractérisé par la différence de phase d'un premier signal d'entrée (175) et d'un deuxième signal d'entrée (275). Ledit détecteur de phase comprend un premier (200) et un deuxième (300) détecteur de phase à l'état double, chacun réalisant une sortie à un cycle de fonctionnement correspondant à la difference de phase entre les signaux d'entrée. Lesdits détecteurs de phase fonctionnant de façon linéaire sur 360 degrés de différence de phase, ils génèrent un signal lorsque la différence de phase entre les deux signaux d'entrée dépasse ladite étendue de 360 degrés. Le premier détecteur de phase (200) mesure la différence de phase entre le premier et le deuxième signaux d'entrée, tandis que le deuxième détecteur de phase (300) mesure la différence de phase entre le deuxième et l'inverse du premier signal d'entrée. Le détecteur de phase présentant une différence de phase comprise dans une étendue de 360 degrés fournit la sortie du détecteur de phase décrit dans l'invention.
Patent EP-0496754-A1 (EP)
Inventor: ALLAN RICHARD DOUGLAS
IPC: G07D5/00
Filed: 1990-10-15
Abstract: Un procédé de validation des pièces de monnaie consiste à faire deux mesures séparées de l'article testé, et à déterminer si les deux mesures se situent dans des plages respectives pour un modèle particulier de pièce de monnaie, la plage pour au moins une des mesures étant fonction d'au moins une autre mesure.
Patent EP-0443429-A1 (EP)
Inventor: KRSTENANSKY JOHN L
IPC: C07K14/815
Filed: 1991-02-13
Abstract: This invention relates to peptide derivatives which are useful anticoagulant agents.