baber/WOPTO huggingface dataset:
Patent EP-0379423-A1 (EP)
Inventor: PERRIN CLAUDE
IPC: C07C227/18
Filed: 1990-01-16
Abstract: The invention relates to the field of organic chemistry, and more specifically to the synthesis of phenylpropionic acids. Its specific subject is a new process for the preparation of 2-[4-(R-amino)phenyl]propionic acids of general formula I <IMAGE> which consists in subjecting a 2-(4-aminophenyl)propionic derivative of formula II <IMAGE> in which R1 is hydrogen or a C1-C6 alkyl radical, to the action of an alkylating agent in a heterogeneous phase in the presence of a phase transfer catalyst and a basic agent in an aqueous medium. The acids obtained are active principles of medicaments.
Patent EP-0412900-A1 (EP)
Inventor: LAFONT RENE J
IPC: G01V3/02
Filed: 1990-08-07
Abstract: The invention concerns the investigation by electrical probing of a soil (20) covered by a mass of water (10). Measurements of the apparent resistivity of the environment are made using a system of pairs of aligned electrodes (AB, M1N1, M2N2,...) having different separations and which are disposed on the soil at the bottom of the water, by the injection of a predetermined electric current (I) into the central pair of electrodes (AB), which makes a potential difference (V) appear in one of the other pairs of electrodes (M2N2) which is measured and from which is derived a value of apparent resistivity of the environment subjected to the electric probing. Between the system of electrodes and the mass of water there is interposed a continuous electrically insulating sheet (40), which is dimensioned such that it covers the entire system of electrodes. This sheet constitutes a barrier preventing the injected current from flowing in the water. <IMAGE>
Patent EP-0422977-A1 (EP)
Inventor: ALAZET JEAN
IPC: A47L13/11
Filed: 1990-09-26
Abstract: The cleaning device comprises a squeegee (1) formed of a blade of elastic material, inside which are formed suction ducts (5) which open in at least one face of the blade through orifices (7) aligned in parallel with the lowermost edge (8) of the squeegee, close to that edge. The suction ducts (5) are connected with flexible tubes (10) passing through a roller-type pump (11) towards a collector tank (15) in which the dirtied cleaning liquid to be eliminated is collected. This device may be used for removing a cleaning liquid having previously been spread over a surface which is to be cleaned.
Patent EP-0395599-A1 (EP)
Inventor: FARELLO GIOVANNI ELVIO
IPC: F04B7/02
Filed: 1990-04-24
Abstract: A valve comprises a valve body (10) extending vertically, provided with an inlet conduit (13) and an outlet conduit (14), at the interior of which there is located a suitable weighted shutter (15) arranged for sliding in a guided manner between opening and closing positions for said conduits and to divide said valve body in an upper plenum chamber (29) communicating with the sucking side of a pump and in a lower plenum chamber (30) communicating with the delivery side of said pump.
Patent EP-0456654-A1 (EP)
Inventor: NOVOTNY RUDOLF
IPC: C01B33/32
Filed: 1990-01-22
Abstract: The direct hydrothermal production of high purity potassium silicate solutions having a high SiO2: K2O molar ratio by reaction of a silicon dioxide source with aqueous potassium hydroxide solutions is made possible by using a silicon dioxide source that contains a sufficient fraction of cristobalite phase, or by conditioning other crystalline forms of silicon dioxide by heating at or above 1100 DEG C., but below the melting point of silica, before the hydrothermal treatment. Preferably the potassium hydroxide solution has a concentration range of 10 to 40% by weight, and the reaction is carried out in a closed pressure reactor at temperatures of 150 DEG to 300 DEG  C. and under saturated steam pressures corresponding to those temperatures.
Patent EP-0457825-A1 (EP)
Title: Method of corrosion protection at pipe junctions.
Inventor: MIESZELEWICZ GIENEK
IPC: F16L58/18
Filed: 1990-02-09
Abstract: PCT No. PCT/AU90/00055 Sec. 371 Date Sep. 17, 1991 Sec. 102(e) Date Sep. 17, 1991 PCT Filed Feb. 9, 1990 PCT Pub. No. WO90/09542 PCT Pub. Date Aug. 23, 1990.A method for providing protection against corrosion of a pipe joint (1) formed by the mating of complementary ends (4, 5) of two pipes comprising the steps of: (a) applying controlled heating to a pipe body which is to be joined to an adjacent pipe, (b) applying to the ends (4, 5) of each pipe a protective layer or coating of material 2 to the pipe body by a time/temperature function process, (c) allowing the pipe to cool, (d) bevelling the terminations of the protective layer or coating (2), (e) mating complimentary ends (4, 5) of the pipes together to form a sealed and corrosion resistant joint (1).
Patent EP-0464081-A1 (EP)
Inventor: HUGLE WILLIAM BELL
IPC: G11B7/28
Filed: 1990-03-22
Abstract: Méthode de fabrication de disques optiques à mémoire, qui comprend la formation d'une image holographique en relief sur un support d'enregistrement (21) par interférence entre un faisceau-objet (OB) de lumière cohérente après passage à travers un masque (22) et un faisceau de référence de lumière cohérente (RBI) qui est totalement refléchi intérieurement à une surface sur laquelle le support d'enregistrement est disposé, puis le remplacement du masque (22) par le disque optique à mémoire (26) et la formation sur une photoréserve ou autre film photo-sensible d'une image de l'enregistrement holographique utilisant un deuxième faisceau de référence (RB2) reproduit en direction inverse à celle du premier faisceau de référence.
Patent EP-0431176-A1 (EP)
Inventor: BAHN ITSUKI - HIGASHIOIZUMI -C
IPC: H02P25/08
Filed: 1990-05-28
Abstract: Moteur pas à pas utilisé comme source d'entraînement pour le mouvement pas à pas d'un organe d'une machine automatique. Une diode est introduite vers l'avant du côté d'une borne d'alimentation en courant continu appliqué, afin d'éviter le reflux d'énergie magnétique accumulée dans la source d'alimentation. Un intense courant d'appel afflue dans une bobine d'excitation à alimenter, suite à la réduction d'énergie magnétique, de sorte que l'accumulation d'énergie magnétique dans la bobine d'excitation s'effectue rapidement, ce qui permet un fonctionnement pas à pas à grande vitesse. En outre, le signal numérique de chaque adresse d'une mémoire morte correspondant au nombre de pas est extrait et converti en un signal analogique. L'accélération s'effectue sans perte de synchronisme en un court laps de temps à l'aide de la fréquence du signal électrique pas à pas correspondant à une fréquence proportionnelle audit signal analogique. Lorsque le nombre de pas atteint 1/2, la lecture de données dans la mémoire morte est inversée et la réduction de vitesse s'effectue en un court laps de temps. Cet agencement permet d'effectuer une commande numérique du mouvement de la charge en un court laps de temps sans perte de synchronisme.
Patent EP-0484356-A1 (EP)
Inventor: HOFFMANN PETER
IPC: C08L33/06
Filed: 1990-07-18
Abstract: La présente invention concerne un enduit comprenant: A) un ou plusieurs polymères contenant des groupes carboxyles ayant un poids moléculaire moyen de 500 à 8000 et un indice d'acidité de 15 à 200 mg KOH/g, à titre de principaux composants liants, et B) un ou plusieurs composés contenant des groupes époxydes, à titre d'agents de réticulation, caractérise en ce que le composé B contenant des groupes époxydes est un copolymérisat contenant des groupes époxydes, présentant un poids moléculaire moyen Mn de 300 à 5000, de préférence de 500 à 3500 et une hétérogénéité (Mw/Mn) mesurée par chromatographie de perméation d'un gel, 3, de préférence 2, et obtenu par polymérisation en masse en continu à des températures comprises entre 130 et 350 °C et sous une pression supérieure à 1 bar. L'invention a également pour objet un procédé de fabrication de cet enduit, ainsi que l'application dudit enduit pour des peintures en réparation de carrosserie automobile.
Patent EP-0489742-A1 (EP)
Inventor: WOOD MICHAEL C
IPC: H04L9/06
Filed: 1990-03-14
Abstract: A cryptographic system creates a key table from a single key such that the relationship between the keys in the key table cannot be determined even if the system implementation is known. The system uses variable functions in which the determinants are changed by the variable function chosen by the determinant. Thus, the functions used in creating the key table do not have to be one-to-one functions. From the key table, four blocks of bytes of additional key based determinants are formed which are called masks. The original key does not exist in either the key table or the mask table. The system preferably uses the key table in a multiple round encryption process. The keys chosen from the table for a key addition operation are a function of the plaintext, the current state of the ciphertext, and the mask values. Therefore, the order in which the keys are chosen is not predetermined or patterned. The system also selects the other encryption functions, including permutations and substitutions, by the plaintext, current state of the ciphertext and the mask values. The cryptographic system also can include a function referred to as the enclave function. This function operates on lookup tables and creates complete inter-symbol dependency on the block of bytes.
Patent EP-0495815-A1 (EP)
Inventor: BEHLER ANSGAR
IPC: C09K23/42
Filed: 1990-10-05
Abstract: Par sulfatation d'alcanols éthoxylés qui se forment par réaction, catalysée à l'hydrotalcite, d'oxyde d'éthylène avec des alcools de 8 à 22 atomes de carbone, on obtient des sulfates d'alkyl-polyéthoxyéthers qui sont remarquables par leur faible teneur en dioxanne et par leur pouvoir épaississant avec les électrolytes courants particulièrement bon.
Patent EP-0439009-A1 (EP)
Inventor: PELZ PETER
IPC: B23K26/18
Filed: 1991-01-02
Abstract: Process for the material-removal treatment of laminated or veneered and especially wood-based workpieces where a first part of the workpiece is separated from a second by means of a material-removing laser device, e.g. by cutting, cutting out or the local removal of surface layers, in which outlines or the like, preferably in the form of lines, letters or symbolic images, are made in the workpiece in the form of recesses not penetrating fully through the workpiece, like grooves or the like, whereby a layer reflecting laser beams in the form of a metal foil, especially aluminium foil, limiting the depth of the recesses, is embedded in the laminated workpiece, and laminated workpieces thus made.
Patent EP-0438140-A1 (EP)
Inventor: AOYAMA KEISUKE C O CANON KABUS
IPC: G02B7/34
Filed: 1991-01-16
Abstract: This invention relates to a camera having a focus detecting device for independently detecting the focus states at a plurality of different distance measurement points. This invention provides in such camera a selection circuit for selecting the distance measurement points, and an indicating circuit for indicating the distance measurement points selected by the selection circuit, and provides an indicating device for pre-indicating a distance measurement point selected before the focus detecting operation and indicating the selected distance measurement point again when the selected distance measurement point is judged to be in focus by the focus detecting operation.
Patent EP-0440158-A1 (EP)
Inventor: IIJIMA YASUO C O INTELLECTUAL
IPC: G07F7/10
Filed: 1991-01-29
Abstract: When mutual authentication is effected between an IC card (1) and a host device (8), key data and random number data transmitted from the host device (8) are immediately subjected to the encrypting process without storing the same into a RAM of a CPU (15) in the IC card (1), and only authentication data obtained as the result of the encrypting process is stored. As a result, the memory area in the RAM can be saved and effectively used.
Patent EP-0443570-A1 (EP)
Inventor: EICKHOFF HANS
IPC: B60J5/08
Filed: 1991-02-21
Abstract: 1. Sliding shutter for a utility vehicle, especially for a fire brigade vehicle. 2.1 Known sliding shutters of fire brigade vehicles have a rectangular shape and cover an appliance superstructure at a clear distance behind the driver's cab owing to the obstacle of the lower, forward front wheel mudguard. If the appliance superstructure and/or the sliding shutter is shifted closer to the driver's cab, the mudguard area cannot be designed as a sliding shutter but rather as a broad grab rail. 2.2 According to the invention a sliding shutter (1) for an appliance superstructure (4) is proposed arranged close behind the driver's cab, especially of a fire brigade vehicle (2), the sliding shutter (1) having a lateral bottom recess which is approximately designed to fit the mudguard of a vehicle wheel. The individual blades (7) of the sliding shutter (1) there are fixed to one another in a longitudinal direction by fastenings such as pins, screws or a recessed steel wire (8). A transverse fastening, especially of the grab rail (9), can also be provided. A sliding shutter (1) of this type is satisfactorily fixed even in the half-opened position. <IMAGE>
Patent EP-0455255-A1 (EP)
Inventor: RAMOTOWSKI WITOLD
IPC: A61B17/80
Filed: 1991-05-03
Abstract: The invention relates to a bone stabilizer comprising bone screws (3) and a support plate (1) which is provided with a narrowing in the form of a rounded recess, the support plate (1) connecting the free fragments of the bone by means of clamping disks (2). The clamping disks (2) are rigid connectors for the bone screws (3), the heads (14) of which are in the form of the two truncated cones connected at their bases. The heads (14) of the bone screws (3) are mounted into appropriately formed apertures and respectively of the support plate (1) and the clamping disks (2).
Patent EP-0457298-A1 (EP)
Inventor: YOSHIDA TETSUO
IPC: G03C1/09
Filed: 1991-05-15
Abstract: A silver halide photographic material comprising a support having thercon at least one light-sensitive silver halide emulsion layer containing silver halide grains, wherein said silver halide grains have a silver chloride content of 30 mol% or more and contain (i) an iridium compound in an amount of 10⁻⁶ mol or less per mol of silver halide, (ii) at least one compound selected from the group consisting of iron, rhenium, ruthenium and osmium compounds in an amount of 10⁻³ mol or less per mol of silver halide, and (iii) (a) at least one conpound selected from the group consisting of compounds represented by general formulae (1-a), (1-b) or (1-c): 
 
 
 
        Z-SO₂·S-M   (1-a) 
 

       
 wherein Z represents a C₁₋₁₈ alkyl group, a C₆₋₁₈ aryl group or a heterocyclic group; Y represents an atomic group required for the formation of a C₆₋₁₈ aromatic ring or a heterocyclic group, said groups represented by Z or formed by Y may be substituted with at least one substituent; M represents a metallic atom or organic cation; and n represents an integer from 2 to 10, and/or (b) the silver halide grains have been chemically sensitized at a PH of 5.5 or less. A process for the development of the silver halide photographic material is also provided wherein processing is effected by an automatic developing machine in a total processing time of 20 to 60 seconds.
Patent EP-0521188-A1 (EP)
Inventor: FOND OLIVIER
IPC: A47J31/40
Filed: 1991-07-05
Abstract: The invention relates to a device which allows extraction from cartridges and which can be fitted on an espresso coffee machine, comprising a cartridge-holder support (14) with a handle (17) and clamping tabs adapted to the clamping collar (2) and to the clamping surfaces (ramps) (13) of the machine, a cartridge-holder (15) accommodated in the said cartridge-holder support and a water collection part (16) mounted pivotally on the handle of the cartridge-holder support, which can be folded over the upper edge of the cartridge-holder and has a water distribution grid (24). <IMAGE>
Patent EP-0472052-A1 (EP)
Inventor: ALBRECHT KAI
IPC: H02P6/06
Filed: 1991-08-07
Abstract: The object of the invention is to propose a method for the regulation of a brushless DC motor, in which the current ripple of the motor is minimised. To this end, on reaching the desired value of the motor current (IM), a switchable semiconductor valve (Tr1, ..., Tr4) in the bridge arm which is being acted on is switched off for a time period (ts) governed by the speed of the motor. In consequence, the clocking frequency of the switchable semiconductor valves is also minimised, which contributes to a considerable reduction in motor noise as well as increasing the life of the transistors. <IMAGE>
Patent EP-0477713-A1 (EP)
Inventor: DZIUK RICHARD
IPC: F16B9/02
Filed: 1991-09-16
Abstract: A device is described for fastening a member having a retaining opening to a wall. The device consists of a holding part (1), which has a hole (10), an expandable part (5), which is intended for insertion into the retaining opening and has a passage, and a screw connection, which is intended for expansion of the expandable part and for connection of the holding part to the member. In order to achieve high mechanical stability with any desired cross-sections of the retaining opening, the expandable part (5) has at least two segments (6), which are separated by at least one slot, running in the longitudinal direction of the expandable part (5), and an expanding part (15) is provided, which can be inserted at least partially into the passage and has at least one expanding surface which interacts over a large area with a surface of the expandable part (5) that is matched to it. <IMAGE>
Patent EP-0502247-A1 (EP)
Inventor: SPRATTE HANS-HERMANN DIPL-ING
IPC: H01L21/68
Filed: 1991-10-18
Abstract: 2.1.In a known such method, bar codes are read on semiconductor surfaces by means of an optical transmitting/receiving system, the optical axes of which enclose a mutual angle of 180 DEG  - 2  theta , the angle  theta  being defined as being located between the semiconductor surface and the respective optical axis. The disadvantageous factor in this that the light source radiates incoherent light so that optical filtering of the light for increasing the contrast is not possible, and that inclinations of the semiconductor surface impair the intensity of the received signal. The novel method eliminates these disadvantages. …<??>2.2.The bar code (14) on the semiconductor surface (1) is scanned by means of a coherent beam (12) having planar wave fronts. The zero-th order of diffraction (17) of the space frequency spectrum (15) produced in the focal plane (13') of the transmitting/receiving optics (2), of the diffracting bar code (14) is located in the centre of the first diaphragm (4). The second diaphragm is arranged spatially in front of the photo-sensitive light receiver (6) in the image plane of the bar code (14) imaged by the transmitting/receiving optics (2). …<IMAGE>…
Patent EP-0492394-A1 (EP)
Inventor: TASCA JEAN-PIERRE
IPC: G01N27/90
Filed: 1991-12-18
Abstract: An exemplary embodiment comprises: … …  - a generator (1') supplying a sinusoidal signal; …  - two power amplifiers (25, 26) with gains that are equal in magnitude but opposite in sign; …  - a change-over relay (28); …  - two impedances (3', 4'); …  - two coils (14', 15') forming a Wheatstone bridge with the two impedances (3', 4'); …  - an amplifier (29) controllable by a binary signal to become either a subtracter or an adder; …  - two synchronous detectors (6' to 9') to supply signals representing the real and imaginary parts of the difference between the complex impedances of the coils (14', 15'); …  - a control device (27) supplying a control signal to the change-over relay (28) and to the amplifier (29) which make it possible to obtain the sum or difference of two fluxes in the coils (14', 15') and the difference or sum respectively of the two output voltages from the Wheatstone bridge. … …<??>Application to the non-destructive testing of metallic components. …<IMAGE>…
Patent EP-0435859-A1 (EP)
Inventor: ZDEB BRIAN D
IPC: A61J3/00
Filed: 1987-05-28
Abstract: The administration set includes a receptacle (42) for receiving a cartridge containing a beneficial agent, whereby the agent can be entrained in fluid flowing through the receptacle (42). An air flask (46) is mounted downstream of the receptacle and includes an air chamber (58) whose cross-sectional area is greater than that of the fluid conduit (28) joining the receptacle (42) to the air flask (46). The chamber has an inlet (48) at an upper end and an outlet (50) at a lower end. Liquid entering the air flask drops to the outlet and air is retained between a layer of liquid above the outlet in the chamber. A sterile barrier (62) may be provided between the inlet and the outlet.
Patent EP-0534005-A1 (EP)
Inventor: MONBALIU MARCEL JACOB
IPC: G03G5/06
Filed: 1991-09-24
Abstract: An electrophotographic recording material which comprises an electrically conductive support having thereon a photoconductive layer, characterized in that said layer contains at least one 2,4,5-triphenyl-oxazole compound corresponding to the following general formula (A) :
       
 wherein : 
each of R¹ and R² and R³ (same or different) is a member selected from the group consisting of an alkyl group, an aryl group, an alkoxy group, halogen and the group -NR⁴R⁵, wherein each of R⁴ and R⁵ (same or different) represents an aryl, aralkyl or heterocyclic group; 
each of m, n and p (same or different) represents 0, 1, 2 or 3; with the provision that at least one of the phenyl groups in the formula (A) is substituted with said -NR⁴R⁵ group.
Patent EP-0473342-A1 (EP)
Inventor: SANPEI TAKESHI KONICA CORPORAT
IPC: G03C1/06
Filed: 1991-08-15
Abstract: A silver halide photographiclight-sensitive material is disclosed, which is capable of forming a extremely high contrast image with high dot quality and is inhibited in formation of pepper spots. The light-sensitive material comprises a support, provided thereon, a photographic layer including a silver halide emulsion layer, wherein the pH value of the surface of said photographic layer is 5.9 or more and said emulsion layer or a layer adjacent to said emulsion layer contains a specified hydrazine compound, and a amine coumound or a quartenary onium compound.
Patent EP-0535275-A1 (EP)
Inventor: FEULING JAMES J
IPC: F01L9/12
Filed: 1991-09-30
Abstract: In an internal combustion engine utilizing hydraulic valve lifters, a source of pressurized oil at a higher than normally expected pressure is supplied thereto. The source utilizes the engine lubricating oil from the engine sump or crank case and the spent oil from the hydraulic lifters is returned to the engine crank case. The oil delivered to the lifter galley is derived from either an engine oil pump which produces a higher pressure oil flow then conventionally desired for normal engine operation, a separate or oil pump oil pumps especially for the valve galley. The pressure setting of the oil output from either pump is determined by the engine RPM, ie. higher pressure with higher engine RPM or from pump speed if an electricly operated separate pump is employed. The exact oil pressure level delivered to the valve galley or to individual valve galleys is determined by an on board computer (engine controller) monitoring the manifold pressure, engine RPM and throttle position so that the hydraulic lifter plunger is always in contact with the valve stem regardless of engine RPM or pump motor speed and variable and different amounts oil pressure and resulting valve lift can be achieved at various selected locations on the valve lift curve created by the valve's camshaft lobe. Variable high oil pressure is supplied only to the lifters to selectively alter their normal degree of valve lift at any location along the valve's cam operating curve while the remaining oil delivery areas of the engine operate at their conventional or normally expected oil pressure levels. In event of a failure of normal engine oil pump operation when a second auxiliary pump for galley delivery is used, an electric value is provided to channel oil from the auxiliary pump to the engine areas requiring lubrication.