baber/WOPTO huggingface dataset:
Patent EP-0225249-A2 (EP)
Inventor: KAI CHI KUANG
IPC: H03K17/693
Filed: 1986-11-19
Abstract: A CMOS current steering switch circuit includes a switch formed of a pair of transistors of one conductivity type having a source terminal connected to a node to which a constant current source is also connected. The drain terminals of the transistors comprise the switch circuit's output terminals. The transistor's gate terminals are controlled by a pair of buffers comprising transistors of the other conductivity type that receive differential input signals that control the switch circuit. The buffers limit the voltage swings of the control signals applied to the gate terminals so that the transistors comprising the switch are not both off at the same time.
Patent EP-0236839-A2 (EP)
Title: Verfahren zur Aufarbeitung wässriger Aminlösungen
Inventor: BECKHAUS HEIKO DR
IPC: C07C209/82
Filed: 1987-02-24
Abstract: Ein neues Verfahren zur Aufarbeitung von wässrigen Aminlösungen, wie sie bei der katalytischen Hydrierung von aromatischen Dinitroverbindungen anfallen durch destillative Abtrennung des Wassers zusammen mit den wasserdampfflüchtigen organischen Nebenprodukten in einer Destillationskolonne, wobei man die Brüden der Destillationskolonne kondensiert, die hierbei anfallende flüssige Phase über eine Trennapparatur führt, in welcher dem Brüdenkondensat wasserdampfflüchtige, organische Nebenprodukte als organische Phase entnommen werden, die die Trennapparatur verlassende, wässrige Phase auf den Kopf der Destillationskolonne zurückführt, der Destillationskolonne das weitgehend von wasserdampfüchtigen organischen Verunreinigungen befreite Wasser über einen Seitenstrom entnimmt und die von Wasser und wasserdampfflüchtigen Verunreinigungen weitgehend befreiten Diamine als Sumpfprodukt gewinnt.
Patent EP-0239056-A2 (EP)
Inventor: PARROTT STEPHEN LAURENT
IPC: B01J23/28
Filed: 1987-03-23
Abstract: A composition of matter comprising alumina, at least one compound of titanium and at least one compound of molybdenum is prepared either by the steps of impregnating an alumina support material with an aqueous solution of at least one titanium compound, drying, impregnating the Ti-impregnated material with an aqueous solution of at least one molybdenum compound, drying and calcining; or by the steps of impregnating an alumina support material with an aqueous solution of at least one titanium compound and at least one molybdenum compound, drying and calcining. The compositions of matter of this invention are useful as catalysts for hydrotreating substantially liquid hydrocarbon-containing feed streams (particularly heavy oils) which also contain compounds of nickel, vanadium and sulfur.
Patent EP-0248366-A2 (EP)
Inventor: PODOLA TORE
IPC: C09K3/10
Filed: 1987-05-29
Abstract: Use of aqueous or alcoholic, in particular aqueous-alcoholic, solutions of water-soluble polymers selected from the group consisting of polyethylene oxide, polyacrylamide, polyacrylic acids and cellulose derivatives having a molecular weight between 100 000 and 5 000 000 as assistant for mechanically smoothing unhardened surfaces of pasty materials such as groutings.
Patent EP-0259894-A2 (EP)
Inventor: YAMANAMI TSUGUYA
IPC: G06F3/033
Filed: 1987-09-14
Abstract: A position detecting apparatus for detecting a position pointed by a pointer (60) on a system such as a digitizer has the following parts: a position detection section (10) having a plurality of loop coils (11-1 to 11-48) arrayed in a side-by-side fashion in the direction of position detection; a selection circuit (20) for successively selecting the loop coils one-by-one; a transmission circuit (40) for generating an A.C. signal of a predetermined frequency to be delivered to the selected loop coil; a receiving circuit (50) adapted to detect an induced voltage of a frequency substantially the same as that of the A.C. signal from among various voltages induced in the selected loop coil; a connection switching circuit (30) for connecting the selected loop coil alternately to the transmission circuit and the receiving circuit; a position pointer (60) having a tuning circuit (61) including a coil and a capacitor and adapted to resonate with an electric wave produced by the loop coil which is supplied with the A.C. signal; and a processing device (70) for determining the position pointed by the position pointer by processing signals representing the levels of voltages induced in the loop coils.
Patent EP-0240076-A2 (EP)
Inventor: FREEMAN KENNETH GEORGE
IPC: H04N9/26
Filed: 1987-03-24
Abstract: A colour display system including a cathode ray display tube (10) of the kind which has an electron multiplier (16) arranged adjacent a luminescent screen (14) comprising a repeating pattern of three different colour phosphor elements and pairs of colour selection electrodes (38, 40) associated with each channel of the multiplier operable to control the direction of the electron beam from the channels for colour selection purposes uses a switching bridge circuit comprising semiconductor switching devices (52, 54, 56, 58), e.g. MOSFETs, connected between voltage supplies for switching the voltage applied to each one of the pair of electrodes between three respective levels in synchronism to achieve a predetermined colour selection sequence. The semiconductor devices are controlled by synchronised waveforms from a pulse generating circuit (86) via optocouplers (88) enabling the switching bridge circuit to be floated at a high potential. The switching voltages applied to one of the selection electrodes may be offset with respect to those applied to the other electrode.
Patent EP-0234789-A2 (EP)
Inventor: PIRAZZOLI ETTORE
IPC: B65H18/10
Filed: 1987-02-09
Abstract: The machine produces spools of dielectric films, metallised on one side or with metal films intercalated between them, around a support of non-circular section 2. The films pass around two fixed rollers 3a and 3b, supported for rotation by a structure 10, and a compensating roller 4, supported by the free end of a bar 5 hinged to the structure 10. The bar 5 is acted on by a cam 6, driven in rotation synchronously with the support 2, so that the compensating roller 4 is moved to compensate for the variations in speed of take up of the films 1 by the support 2 and thus to maintain a constant speed of take off of the films from feed spools situated prior to the fixed rollers 3a and 3b.
Patent EP-0250162-A2 (EP)
Inventor: FULLER JOSEPH DAWSON
IPC: E21B21/14
Filed: 1987-06-11
Abstract: a method of removing at least a substantial proportion of fluid left in a generally horizontal section of a pipeline, by injecting into the pipeline a pressurized, high expansion foam and advancing the foam through the pipeline section in contact with a layer of the fluid left therein to displace the layer towards a remote end of the pipeline by frictional pick-up of the layer by the foam and to effect mass transfer of a foaming agent from the foam to the fluid, followed by passing into the pipeline a pressurized gas to create turbulence in fluid left in the pipeline causing foaming of the fluid and to displace a substantial proportion of the foam left within the pipeline. At least some of the bulk of the fluid in the pipeline may be displaced by injecting the foam so as to establish a transverse foam/fluid interface which is advanced through the pipeline at or above a minimum velocity required to maintain said interface leaving a residual amount of fluid which is treated as aforesaid. The method may include the further subsequent step of injecting into the pipeline a pressurized foam containing a treatment agent to displace residual foam left in the pipeline, and then allowing the foam to decompose in the pipeline to deposit the treatment agent within the pipeline either on the pipewall or in solution with any liquids remaining therein.
Patent EP-0251603-A2 (EP)
Inventor: WILLIAMS DAVID ALLEN
IPC: F15B13/16
Filed: 1987-06-22
Abstract: In an hydraulic system in which an hydraulic actuator (1) is controlled by a servovalve (10;50), a feed back signal derived from fluid flow associated with actuator movement is used to operate the servovalve, to ensure accurate control of the hydraulic actuator. The feedback signal can be an hydraulic signal derived from the pressure differential developed across a restriction (30) in the fluid flow, which can be applied to the servovalve directly, or an electrical signal for application to an electrical input to the servovalve, after modification if required, obtained from the pressure differential.
Patent EP-0264186-A2 (EP)
Inventor: ALLEN RICHARD G
IPC: D04H1/48
Filed: 1987-09-08
Abstract: A cargo bed liner system for use in pickup trucks, four-wheel drive vehicles, light utility vehicles and the like, in which rigidified carpeting material made of needle-loomed staple fibers of polypropylene and polyester have been thermoformed to form a floor covering piece (12), a tail gate covering piece (18), and two left and right side covering pieces (14), with flaps on the floor piece being folded upwards to cover the forward panel and any areas of the left and right side panels which have not been covered by the left and right side panel cover pieces. The system is affixed to the vehicle's cargo bed by means of several velco-type fasteners (27).
Patent EP-0266166-A2 (EP)
Inventor: TAKIKAWA MASAHIKO
IPC: H01L29/778
Filed: 1987-10-27
Abstract: A high electron mobility transistor comprises a semiinsulating substrate (11), an undoped channel layer (12) formed on the semiinsulating substrate and made of undoped gallium arsenide (GaAs), a doped carrier supplying layer (13) formed on the undoped channel layer and made of a II-VI family compound semiconductor having an electron affinity smaller than that of the undoped gallium arsenide and having an energy gap greater than that of the undoped gallium arsenide, and source, drain and gate electrodes (14, 15, 16) formed on the doped carrier supplying layer.
Patent EP-0267047-A2 (EP)
Title: Bleaching compositions, glycolate ester peracids  and precursors
Inventor: FONG RONALD A
IPC: C11D7/54
Filed: 1987-11-06
Abstract: A peracid precursor characterised in that it corresponds to the following general formula:
     wherein
     R represents C 1 -C 20  alkyl, alkoxylated alkyl, cycloalkyl, aryl, alkylaryl or substituted aryl;   R' and R" independently represent hydrogen, C 1 -C 20  alkyl, aryl, Ci-C 2 o alkylaryl, substituted aryl or 
     wherein Ra represents C 1 -C 30  alkyl; and   L represents a leaving group, is disclosed.   A peracid characterised in that it corresponds to the following general formula:
     or
     wherein   R, R, and R" are as defined above; or an alkali metal or alkaline earth metal salt thereof, is also disclosed.   A bleaching composition which may comprise such a peracid precursor and a bleach-effective amount of a source of hydrogen peroxide is further disclosed.   New, proficient and cost-effective compounds for fabric bleaching are provided.
Patent EP-0272812-A2 (EP)
Inventor: KATO TOSHIKAZU
IPC: C08K3/34
Filed: 1987-11-26
Abstract: In a process for partially curing a powdery poly­arylene sulfide resin which comprises heating the powdery resin either in the absence or presence of oxygen while agitating so as to attain an increased melt viscosity in a range suitable for further processing or molding of the resin, an improvement comprising that the resin together with an added specific inorganic additive undergoes the partial curing treatment at temperatures in the range of from a temperature just below the melting point of the starting resin down to a temperature lower by 80°C than said melting point. The additive is selected from the group consisting of silica, hydrophobic silica, talc and calcium carbonate and mixtures thereof. By use of the additive, the powder characteristics or fluidity properties of the start­ing resin are substantially retained during and after the partial curing treatment, the static electricity generated by agitation of the resin during the treatment is signifi­cantly reduced, and the resin is effectively prevented from forming scaling on the interior walls of the reactor vessel used for the process. Therefore, the agitation of the powdery resin can be uniformly and efficiently effected so that a desired control of the melt viscosity is easily achieved.
Patent EP-0273836-A2 (EP)
Title: Polyisocyanates à groupement isocyanurique purs et procédé d'obtention de ces polyisocyanates
Inventor: ROBIN JEAN
IPC: C08G18/79
Filed: 1987-11-27
Abstract: La présente invention concerne des polyisocyanates à groupement isocyanurique contenant une quantité de diisocyanate inférieure ou égale à 0,03 % en poids et une quantité de dimère inférieure ou égale à 1,0 % en poids. La présente invention concerne également l'isolement et la purification des polyisocyanates à groupement isocyanurate, et plus particulièrement de ces polyisocyanates préparés par cyclotrimérisation catalytique d'un diisocyanate aliphatique, cycloaliphatique ou arylaliphatique. Elle consiste plus particulièrement à traiter le polyisocyanate à groupement isocyanurique brut par un gaz inerte à l'état liquide ou supercritique.
Patent EP-0277456-A2 (EP)
Inventor: KROMREY ROBERT V
IPC: C08J5/24
Filed: 1987-09-01
Abstract: A method for molding composite prepregs using high temperature substantially cured thermosetting resins that reduces fiber damage. Fiber plies are impregnated with solutions of high temperature substantially cured thermosetting resins and the plies are stacked to form a prepreg. A solid flowable particulate silicone rubber is caused to apply pressure to the prepreg to form a composite. 
     This invention makes a significant advance in the field of molding high temperature resin composites by providing methods of molding that reduce fiber damage, shorten molding time and result in denser parts.
Patent EP-0275995-A2 (EP)
Inventor: VON SICHART FRITHJOF DR RER NA
IPC: H03K17/10
Filed: 1988-01-20
Abstract: In an open-drain MOSFET circuit comprising a MOS field-effect transistor to the gate electrode of which a turning-on or turning-off signal is applied, an additional MOS field-effect transistor is inserted between the MOS transistor and a feed voltage source connected to its drain electrode, with a feed voltage exceeding the drain-gate breakdown voltage of the MOS field-effect transistor, so reducing the drain-gate voltage occurring at this MOS field-effect transistor in the turned-off condition, the gate electrode of which additional MOS field-effect transistor is connected to a fixed operating voltage not exceeding the said drain-gate breakdown voltage. For further reduction of the voltage, at least one further MOS field- effect transistor can be inserted between the additional MOS field- effect transistor and the feed voltage source, the gate electrode of which further MOS field-effect transistor is connected to its drain electrode. <IMAGE>
Patent EP-0284773-A2 (EP)
Inventor: BUCHELE ERICH
IPC: B21D41/02
Filed: 1988-02-24
Abstract: The apparatus for enlarging tube ends (9) has a die (1) which surrounds the tube end and has a recess (10) in accordance with the form of enlargement to be applied. Located in the interior of the die (1) is an expanding sleeve (4, 14) which can be expanded by an expanding mandrel (3) which can be displaced by a piston (15). When the expanding mandrel (3) is actuated, the tube (8) can be clamped in place between the die (1) and the expanding sleeve (4, 14). A punch (5) can be displaced on the expanding sleeve (4, 14). The tube end (9) is expanded when the punch (5) is displaced in the direction of the recess (10). <IMAGE>
Patent EP-0282884-A2 (EP)
Inventor: NEZIK DIETER DIPL-ING
IPC: G01D5/249
Filed: 1988-03-09
Abstract: 1. A sensor for a position transducer is to be specified which can be produced simply and in very small dimensions. 2. On a coding disc mounted on a rotatable shaft, raised portions (3) and recesses (4) are located, the coding disc rotating with the raised portions between a tuning fork (8) of a piezoelectric transducer (5). The transducer (5) generates a first or, respectively, a second signal due to the presence of a raised portion (3) or of a recess (4). 3. The sensor can be constructed as a micromechanical component and can be used, for example, as angle encoder for the positions of hands of analog clocks. <IMAGE>
Patent EP-0283972-A2 (EP)
Inventor: TANAKA MASATO C O IDEMITSU KOS
IPC: C08F4/69
Filed: 1988-03-19
Abstract: Process for producing an ethylene-based copolymer which comprises copolymerizing ethylene and unsaturated carboxylic acid or its ester in the presence of a Lewis acid by the use of a chromium containing catalyst. 
     According to the process of the present invention, copolymerization can be carried out with high activity, and the resulting copolymer can be obtained in higher yield.
Patent EP-0292792-A2 (EP)
Inventor: KOPATZ NELSON E
IPC: B22F9/22
Filed: 1988-05-11
Abstract: A process for producing finely divided spherical iron group based metallic powders comprises forming an aqueous solution containing a source of the appropriate metal sources in a mineral acid, forming a reducible iron group based material from the solution, reducing the material to iron group based metal powder particles, subjecting the metal particles to a high temperature zone to melt a portion of the particles and to form droplets and cooling the droplets to form an essential spherical iron group based metallic powders.
Patent EP-0312019-A2 (EP)
Inventor: GOTO YUKIHISA
IPC: C07D471/04
Filed: 1988-10-12
Abstract: A compound of the formula (I)
     , wherein A is an alkylene or alkenylene group, R 1  is an aryl group which may be substituted, R 2  is hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a halogenated lower alkyl group, a cycloalkyl group, a lower alkoxyalkyl group, a lower alkylthioalkyl group, a phenyl group which may be substituted or an aralkyl group which may be substituted, R 3  is hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group or a halogenated lower alkyl group, or R 2  and R 3  may be combined to form a group of -(CH 2 ) n - (n is 3 or 4), or salt thereof, which is useful as herbicide.
Patent EP-0315022-A2 (EP)
Inventor: MASUDA KAZUHIKO
IPC: B01D67/00
Filed: 1988-10-25
Abstract: A filtering device for blood platelet comprises polyester fibers having an average cross-sectional diameter of 0.1 to 5 µm, wherein there is formed electro-­microscopic roughness on the surface of the polyester fibers. According to the present invention, there can be realized a filtering device for blood platelet having simple construction, wherein blood platelet is caught efficiently and the removal of blood platelet is carried out in a short time.
Patent EP-0318997-A2 (EP)
Title: Safety device for a pyrotechnical self-destruction fuze for use with bomblets
Inventor: MULLER FRITZ
IPC: F42C15/18
Filed: 1988-12-01
Abstract: A safety device for a pyrotechnic self-destruction fuse for bomblets guarantees, when the safety removal criteria function normally, that the safety device is removed from a percussion stud (23) of a pyrotechnic delay device (25, 26) in dependence on the safety removal movement of the striking pin (12). Should the bomblet (1) fail to perform its impact function, this delay device at all events ignites the detonator (20), so that either the bomblet (1) is destroyed by means of an explosive charge (3) or at least the highly sensitive detonator (20) is eliminated. Dangerous bomblet misfires therefore no longer occur. <IMAGE>
Patent EP-0332760-A2 (EP)
Inventor: CAPRETTE SAMUEL JOSEPH JR
IPC: C08J5/04
Filed: 1988-12-22
Abstract: A sonic window suitable for use in sonar applications wherein an elastomer such as natural or synthetic natural rubbers, a low air entrapping fiber or fibril used for reinforcement, fillers, and thermosetting resins are formed into desired window configuration. The low air entrapment associated with the fiber or fibrils produces a remarkably sonicly transparent window.
Patent EP-0316981-A2 (EP)
Inventor: RYCKEBUSCH FRANK
IPC: H02M3/335
Filed: 1988-10-29
Abstract: DC to DC voltage/current electric converter converting an input signal (V1) to an output signal (V2) and including an input circuit (IC) with a gating circuit (NM4) to apply the input signal thereat, an output circuit (OC) generating the output signal, and a converter circuit (PFM, PWM). The converter circuit includes a pulse generator (PFM, COMP3), generating a pulse stream (F5) having an average frequency which is function of the output signal, and a pulse width modulator circuit (PWM) which converts each pulse of the pulse stream into a pulse having a width (T2) which is function of the input signal (V1) and is used to control the gating circuit.
Patent EP-0305097-A2 (EP)
Title: Nutritional supplement
Inventor: HORROBIN DAVID FREDERICK
IPC: A23L1/304
Filed: 1988-08-15
Abstract: There are provided lithium-containing nutritional supplements, e.g. foodstuffs, multi-vitamin/mineral preparations and parenteral and enteral alimentation solutions containing physiologically tolerable lithium compounds.
Patent EP-0305172-A2 (EP)
Inventor: PARNALL SIMON JOHN
IPC: H03J1/00
Filed: 1988-08-24
Abstract: Push button (P1 - P4) are associated with read-only stores RO1 - RO4) which store PI (programme identification) codes corresponding to the selections programmed in by the user. Corresponding read-­write stores (RW1 - RW4) store current PI codes; if the PI code associated with the programme currently received changes, the new code is written in the corresponding read-write store. ON (other networks) data decoded by the radio data system is compared (D1, D2) with stored PI codes. If there is an exact PI code match with a PI code in a read-only store (RO1 - RO4) a corresponding list of alternative frequencies (e.g. MAF2) for the programme currently received is updated. If there is a generic PI code match (signifying related programmes) with a PI code in a read-write store (RW1 - RW4) a corresponding list of alternative services (MAS1 - ­MAS4) is updated. Repeated pressing of a button (e.g. P2) selects in turn the alternative services identified in the corresponding list (MAS2). Alternative frequencies are selected automatically when received signal strength deteriorates.
Patent EP-0309175-A2 (EP)
Inventor: TAKAHASHI MASANOBU
IPC: G03G15/00
Filed: 1988-09-19
Abstract: A reversible auto document feeder having a document feeding mechanism for feeding a document to a document placing position of an image forming apparatus, reversing the document, feeding the reversed document to the document placing position again, discharging the document. In order that, when attached to image forming apparatus (41) capable of sending only an ADF (auto document feed) signal, RADF (reversible auto document feed) operation can be performed, the feeder has change means (43) for changing to a forced control mode of controlling the document feeding mechanism so as to feed a document to the document placing position, reversing the document after copying, feeding the reversed document to the document placing position again, and discharging the document after copying in accordance with an ADF signal from the image forming apparatus (41).
Patent EP-0286559-A2 (EP)
Inventor: BEYLET DANIEL
IPC: B62J1/18
Filed: 1988-04-08
Abstract: Saddle, characterised in that it comprises, at one of its ends, an anatomical raised edge (4) having, on its front side, a symmetrical relief formed from two concavities on either side of a central, longitudinal projecting zone (6), the said central longitudinal zone terminating, at the upper part, in an upper central wedge (9) which makes it possible to obtain an efficient support/wedging. 
<??>This invention is of interest to professional cyclists and manufacturers of accessories. 
<IMAGE>
Patent EP-0346573-A2 (EP)
Inventor: FADNER THOMAS A
IPC: B41F7/24
Filed: 1989-03-16
Abstract: A dampening system for a lithographic printing press is provided in which the source of water (100) is separate from the dampener rollers (102-105) and all the dampener rollers (102-105) have surfaces that possess both oleophilic and hydrophobic properties.