baber/WOPTO huggingface dataset:
Patent EP-0292512-A1 (EP)
Title: Static power conversion method and apparatus.
Inventor: DIVAN DEEPAKRAJ M
IPC: H02M7/217
Filed: 1987-09-25
Abstract: A high efficiency power converter is achieved utilizing a resonant DC link between a DC source, such as a converter rectifying power from an AC power system, to a variable frequency voltage source inverter. A resonant circuit composed of an inductor and capacitor is connected to the DC power supply and to a DC bus supplying the inverter and is caused to oscillate stably at a high frequency to provide a uni-directional voltage across the DC bus which reaches zero volts during each cycle of oscillation of the resonant circuit. The switching devices of the inverter are controlled to switch on and off only at times when the DC bus voltage is zero, thereby eliminating switching losses in the inverter. The resonant circuit can be caused to oscillate utilizing pairs of switching devices in the inverter or a separate switching device across the capacitor, which again are caused to switch on and off only at times of zero voltage on the DC bus. For AC to AC conversion, enabling bi-directional power flow, the switching devices of the power source which converts AC power to DC power may have switching devices which are also switched only at the times of zero voltage so that switching losses in these devices is also minimized.
Patent EP-0334863-A1 (EP)
Inventor: MATHEW CHEMPOLIL THOMAS
IPC: C07C67/00
Filed: 1987-11-03
Abstract: On prépare des organo N-hydroxyimidates en faisant réagir un organonitrile avec un alcool organique et un halogénure d'hydrogène en présence d'un solvant organique (qui peut comprendre un excès du réactant organonitrile), en conditions anhydres, pour former l'organoimidate hydrohalogénure correspondant, puis en faisant réagir l'organoimidate hydrohalogénure avec une hydroxylamine et du gaz ammoniac en présence d'un solvant organique (qui peut être l'organonitrile en excès de la première étape), en conditions anhydres, pour produire l'organo N-hydroxyimidate correspondant.
Patent EP-0282693-A1 (EP)
Inventor: WERBIZKY GEORGE GREGORY
IPC: H01L23/50
Filed: 1988-01-19
Abstract: A pluggable, high density, reliable integrated circuit package is disclosed. The package has a plurality of integrated circuit chips mounted on a multilayer ceramic substrate. Input-output signals are provided to the module (10) by means of mating male female input-output pins (12) which are located on the bottom of the module (10). 
     Power is provided to the module (10) from a multilayer ceramic frame (20) through an edge connector (27) that is an integral part of the multilayer ceramic substrate. Matching circuit vias (41) located on the edge of the multilayer ceramic substrate (10) and on the edge of the multilayer ceramic frame (20) are cut and tinned with tin-lead (42) to provide power input connections. When the module is plugged into the circuit board (30) the edge connectors (17) on the module (10) mate with the edge connectors (27) in the ceramic frame (20). 
     Since the frame (20) is made of the same material as the module substrate, the power connectors (17, 27) have excellent thermal match and they are highly reliable.
Patent EP-0341327-A1 (EP)
Inventor: ROTHER PETER
IPC: A61B5/00
Filed: 1988-05-09
Abstract: A method is used for processing signals, particularly for oximetric measurements on living human tissue. Spurious signals are suppressed with respect to information signals. The spurious signals have a frequency lying in a first frequency range, and the information signals have a frequency lying in a second frequency range being different from said first frequency range. The signals are conducted over a filter (14) having essentially a blocking characteristic in said first frequency range and having essentially a transmission characteristic in said second frequency range. An output signal of the filter is further processed. 
     In order to eliminate distorting effects from the filter on the information signal, a first function is determined representing the deviation of the frequency response of the filter (14) in said frequency range from an ideal transmission characteristic. A second function inverted with respect to said first function is generated. The output signal is weighted by the second function to generate a weighted output signal (S).
Patent EP-0293758-A1 (EP)
Inventor: SPARROW TIMOTHY HAINES
IPC: A44B1/04
Filed: 1988-05-26
Abstract: A domed cap button collet and the method and apparatus for the manufacture of same by deforming a flat domed button collet having an elastic body including: a shank (16); a radially extending plate-like flange (18) located one end of the shank (16); and, a cap (20) formed of malleable material overlying the outer surface of the flange (18) and crimped to the peripheral portion of the flange. Pressure is simultaneously applied to bend the flange (18) and cap member (20) into a substantially convex dome shape (24). Upon removal of the pressure, the cap member (20) retains its dome shape (24) and the flange member (18) reverts to its original plate-like configuration.
Patent EP-0322004-A1 (EP)
Inventor: DOBSON ROY LEE MARTIN
IPC: C07D307/83
Filed: 1988-11-18
Abstract: The present invention involves compounds having the structure:
     wherein
     (a) -A- is selected from the group consisting of -CH 2 -,
         (b) -Y is selected from certain low molecular weight alkyl chains which terminate in specific unsaturated functional groups: -C≡CH,
     and aldehydes in the form of their acetals; pharmaceutical compositions comprising such compounds; and methods for treating inflammation by administering such compounds.
Patent EP-0278638-A1 (EP)
Inventor: ROOTE ROBERT JOHN
IPC: G02B3/00
Filed: 1988-01-28
Abstract: A convex lens has a geometric axis, defined to be an axis passing through the lens at a central point normally to the general plane of the lens, spaced from its optical axis defined to be an axis passing through the lens between its focal points. The lens may be manufactured from a mould, at least one concave surface of which has a centre point spaced from a deepest point, said mould having a feed point at an edge point substantially in a plane extending from said centre point through said deepest point to the edge of the concave surface. A transparent plastics material may then be injected into the mould cavity through the feed point.
Patent EP-0293068-A1 (EP)
Inventor: HASEGAWA RYOZO
IPC: A61N1/04
Filed: 1988-03-02
Abstract: An electric therapeutic apparatus for inducing an expectoration of sputum by a patient having difficulty therewith by using an interference low frequency wave, which comprises at least one electric current generating (2, 3) unit for generating an electric current having an intermediate frequency, an electric current detecting unit (6) for detecting an electric current when an electric power is supplied, an electric current controlling unit (5) for controlling the current flowing in the apparatus when an electric power is supplied, and at least one pair of electrodes (8, 8ʹ) adapted to be attached to a human body, the input of which is connected to the current generating unit (2, 3). The apparatus can be combined with a separate bioelectric potential measuring unit with a suitable coupling means (11a, 11b, 11c, 11d) so that the electric therapeutic treatment can be carried out while checking the bio­electric potential, this unit being, for example, an electrocardiogram, and therefore, if an abnormal bio­electric potential is detected during the electric therapeutic treatment, the current supplied to the therapeutic apparatus is stopped or reduced so that a treatment having a high safety and excellent accuracy can be obtained. Moreover, a fixing device of an electrode (8, 8ʹ) in which a plurality of electrodes (8, 8ʹ) can be easily fixed to any portion of a human body is provided.
Patent EP-0292122-A1 (EP)
Inventor: HAMAGUCHI HIROSHI
IPC: C07D231/12
Filed: 1988-04-26
Abstract: Novel cyclohexane-1, 3-dione derivatives repre­sented by 2-{1-(3-chloro-2-propenyloxyimino)propyl}-5-­(1-methyl-1H-pyrazol-4-yl)cyclohexane-1, 3-dione and intermediates thereof are disclosed. The cyclohexane-­1,3-dione derivatives have a potent herbicidal effect against a wide variety of weeds and can selectively control injurous weeds at lower dosages. A process for preparing the cyclohexane-1, 3-dione derivatives is also disclosed.
Patent EP-0340351-A1 (EP)
Inventor: GARCIA-MALLOL JUAN ANTONIO
IPC: F02C3/20
Filed: 1988-05-03
Abstract: A method for driving a gas turbine in which air is passed through a bed of particulate material including fuel with the quantity of air being insufficient for complete combustion of the fuel but sufficient to generate a com­bustible off-gas. Additional air is added above the fluidized bed to complete the combustion of the fuel and produce flue gases. The off-gas is discharged from the vessel and is combusted to raise the temperature of the flue gases before they are passed to a turbine.
Patent EP-0321120-A1 (EP)
Inventor: GORTON LANNY A
IPC: F16M11/04
Filed: 1988-11-30
Abstract: A clamp fixture (10) for supporting a medical instrument (12) in a selected orientation relative to a variety of different support structures, such as an upright pole (14), a tabletop edge, a bed rail, etc. The clamp fixture comprises an open-sided base bracket (16) for receiving the support structure to extend through the base bracket along a first axis (19). A clamp screw is carried by the base bracket (16) and is adjustable to retain the support structure (14) against an inner support surface of the base bracket (16). A frame member (18) is mounted on the base bracket for rotation generally about a second axis (20) perpendicular to the first axis, with a spring-loaded lock pin (94) releasably securing the frame member (18) in one of several present rotational positions. Two frame arms (22) extend from the frame member (18) for connection to the instrument (12) in a manner permitting rotation of instrument (12) about a third axis (24) perpendicular to the first and second axes. A detent lock mechanism (194,102) cooperates between the instrument (12) and each frame arm (22) to releasably lock the instrument in a selected position of rotational adjustment. The clamp fixture includes an adjustable clutch mechanism (62,64,66) for controlling the clamping force which can be applied by the clamp screw (42) to a support structure (14). The clutch mechanism can be adjusted by a specialised tool (67) after engaging the support structure (14) to prevent unauthorised removal of theft.
Patent EP-0321309-A1 (EP)
Inventor: ALLEN JOHN V
IPC: F23G5/30
Filed: 1988-12-19
Abstract: A reactor comprising a main housing (10) including, a waste inlet (12), an exhaust gas outlet (18), an incombustible solids outlets (20), a base member (22), a fluidizable medium located on the base member, a plurality of gas inlets (24) in the base member whereby a fluidizing medium located on the base member may be fluidized, a hollow body (38) of generally triangular cross-section extending across the main housing and dividing the housing into upper (44) and lower (46) zones and having a pair of arcuate deflector surfaces (42). A gas inlet into the body is provided whereby gas may be fed to the interior of the body. A plurality of openings (52) are provided in the top (40) of the body whereby gas fed to the body through the gas inlet heated in the body may rise upwardly in the upper zone to assist in combustion in that upper zone.
Patent EP-0301932-A1 (EP)
Inventor: BOILLOT BEATRICE MARIE-JEANNE
IPC: C08F8/48
Filed: 1988-07-08
Abstract: A polymeric material with reactive sites, insoluble especially in aqueous media, characterised in that it consists of a chemically inert polymer, insoluble especially in aqueous media and sufficiently crosslinked to be useable in a defined configuration such as a membrane or tube configuration, onto which polymer is grafted a monomer containing at least one carboxyl group and/or a polymer of this monomer, all or part of the carboxyl groups of this crosslinked, insoluble and grafted polymer being converted into condensed groups which are more reactive than the corresponding carboxyl groups. The invention also relates to a process for the preparation of this material and to the latter's applications.
Patent EP-0300898-A1 (EP)
Inventor: DEMASSEY JACQUES
IPC: C07D413/12
Filed: 1988-07-20
Abstract: Compounds of formula (I): 
<IMAGE>
 in which X is a sulphur or oxygen atom, Y is C=O, C=S or CH2, R1 is hydrogen, halogen, saturated or unsaturated, linear, branched or cyclic alkyl optionally substituted by halogens (->8C) or aryl (->14C), R2 is hydrogen, saturated or unsaturated, linear, branched or cyclic alkyl (->8C) optionally substituted by halogens, aryl (->14C), CF3, NO2, C=H or halogen, alkoxy, ester, R3 is hydrogen, C1-3 alkyl, C=CH and A denotes the residue of a pyrethrinoid acid ACO2H, in all their possible stereoisomeric forms, and the mixtures of these stereoisomers.
Patent EP-0352391-A1 (EP)
Inventor: MARCOZ BRUNO PAUL CLAUDE
IPC: H01H47/00
Filed: 1988-07-29
Abstract: The invention relates to a device for the switching on and off of electrical power circuits under low, single-phase or multi-phase voltage. The device comprises at least one relay (4a-c; 5a-c) provided with a control coil (6) supplied with direct current at low voltage, and at least one working contact (7) incorporated in the power circuit associated with each phase, and is characterised in that it comprises an electronic circuit for exciting a relay (4a, b, c, 5a, b, c) adapted to furnish the coil (6) of the relay, during the excitation period, with a pulsed current having the necessary value for the excitation, and then a current with lower value reduced to the necessary value for sustaining the relay and the electromagnetic means for detecting overloads. The invention can be used for printed circuits. <IMAGE>
Patent EP-0296203-A1 (EP)
Inventor: KENNETH G BRYANT CHARLOTTE
IPC: D04H1/14
Filed: 1987-12-14
Abstract: Un tissu à maille ayant des propriétés améliorées de dissipation et d'absorption des charges électriques, de résistance aux tâches et au boulochage et de résistance à la déformation due à la traction et à la transformation en tissu charpie, est construit de manière à former une matrice conductrice capable de décharger une charge électrique suivant une direction quelconque de la maille et de la côte du tissu à maille.
Patent EP-0299998-A1 (EP)
Inventor: SCHULMAN JOEL N
IPC: G02F1/017
Filed: 1987-12-14
Abstract: On a décrit plusieurs systèmes et procédés de modulation optique fondés sur la modulation de l'indice de réfraction d'une structure nipi. La modulation de l'indice de réfraction est obtenue par l'application d'une différence de tension régulée entre les couches à dopage n et les couches à dopage p de la structure. Des contacts alternés avec les couches sont formés par des éléments conducteurs qui s'étendent à travers la structure. Un des éléments établit des contacts ohmiques avec les couches n, et l'autre avec les couches p. Dans le cas d'une implantation en tant que moulateur de phase optique spatial, l'un des contacts nipi a la forme d'une grille qui divise la structure en une matrice d'éléments d'image ou pixels, l'autre contact comprenant des fils séparés qui s'étendent à travers chaque pixel. Une configuration de tension spatiale est appliquée aux fils de pixel pour injecter des charges dans leurs couches correspondantes, et moduler ainsi les indices de réfraction des pixels, ce qui se traduit par la modulation de phase spatiale désirée d'un faisceau de lecture transmis à travers la structure nipi. Sont également décrites différentes applications à ondes guidées, dans lesquelles un faisceau est transmis à travers une structure nipi parallèlement aux couches n et p. La structure nipi n'est pas divisée en pixels, mais présente plutôt une différence de tension commune entre ses couches n et p. On module dans l'espace l'indice de réfraction de la structure en faisant varier cette différence de tension, et la modulation de la tension dans l'espace est transférée sur le faisceau.
Patent EP-0371994-A1 (EP)
Title: Stable, single-liquid alpha-amylase reagent.
Inventor: KWAN SHING SAI
IPC: C12Q1/34
Filed: 1988-07-15
Abstract: A stable, single liquid alpha-amylase assay reagent comprises a polysaccharide or long chain oligosaccharide substrate for alpha-amylase having an optically detectable label bonded to the reducing end glucose, by a bond cleavable by alpha- or beta-glucosidase, and a blocking group bonded to the terminal end glucose. The reagent further comprises beta-amylase and either alpha- or beta-glucosidase. Sorbitol is provided in an amount of about 5% to retard degradation of the enzymes. Zwitterionic buffers are also provided to stabilize the enzymes. In preparing the reagent, the enzymes and substrate are filtered through a 0.2 micron or less filter to remove alpha-amylase producing organisms.
Patent EP-0340264-A1 (EP)
Title: Procede pour la fabrication de produits semi-finis en alliage refractaire fritte
Inventor: ECK RALF
IPC: C22F1/18
Filed: 1988-10-24
Abstract: Il est décrit un procédé de fabrication de produits semi-finis en alliage réfractaire fritté à structure enchevêtrée. Le produit fritté formé au moins à 85 % est soumis, avant le recuit de cristallisation, à un recuit intermédiaire pendant au moins 20 minutes à une température minimale de 700°C et à une température maximale pour laquelle la recristallisation ne se produit pas. Comme suite à ce traitement, le produit encore chaud est soumis à une déformation supplémentaire de 3 % à 30 %. Le procédé décrit permet d'obtenir des produits semi-finis présentant une bonne structure avec des dimensions sensiblement supérieures, ou pour des dimensions identiques, une structure enchevêtrée supérieure à celles que l'on peut obtenir avec les procédés connus.
Patent EP-0317550-A1 (EP)
Inventor: BURDA HERBERT
IPC: E03D11/14
Filed: 1987-03-16
Abstract: The furring brackets are characterised by a side part (10) composed of two vertical profile elements (10.1, 10.2), one of which (10.2) can be fixed to the wall (W) and which are connected to one another at two legs (10.3, 10.4), extending perpendicularly to the wall (W) and parallel to one another, via screw connections (10.5) guided through elongated holes. <IMAGE>
Patent EP-0332968-A1 (EP)
Inventor: JUNGE BODO DR
IPC: C07D209/90
Filed: 1989-03-06
Abstract: 1,3,4,5-Tetrahydrobenz[c,d]indoles can be prepared by reductively aminating, for example, appropriate ketones with amines. The novel compounds can be employed as active substances in medicaments.
Patent EP-0403667-A1 (EP)
Inventor: KANG SUNG HWAN
IPC: H05B41/282
Filed: 1989-06-13
Abstract: There is disclosed an electronic switching ballast for a fluorescent lamp comprising a rectifier (1), a constant-­voltage regulator (2), a square-wave generator (4) for generating a square-wave output voltage, a phase discriminator (6) for full-wave rectifiying of feed-back voltage from a wave-shaping circuit (11) by comparing it with a reference voltage, a switching time differentiating circuit (5) for combining the output wave of said phase dicriminator (6) to arbitrarily limit the pulse width, first and second drivers (7,8) branched for each receiving the output of said switching time differentiating circuit (5), first and second output (9,10) circuits for alternately operating in response to the outputs of said first and second drivers (7,8), and said wave-shaping circuit (11) for modifying the outputs of said first and second output circuits (9,10) into a sine wave.
Patent EP-0348782-A1 (EP)
Inventor: HENSCHEL ROLF
IPC: A61B1/253
Filed: 1989-06-19
Abstract: The invention relates to a mouth mirror for dental examination, having a support (1) which receives a mirror and is generally of circular design, and having a hand-grip (3) attached to the support (1), a heating apparatus (4) being provided according to the invention which heats the mirror to, in particular, a patient's body temperature. <IMAGE>
Patent EP-0370357-A1 (EP)
Inventor: TANIGUCHI MASATO
IPC: C07C255/61
Filed: 1989-11-13
Abstract: A process for producing a 3-iminonitrile represented by the following general formula (II):
      wherein R₁ and R₂, which may be the same or different, each represents a hydrogen atom, a halogen atom, an aliphatic group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, an alkylamino group, an anilino group, an alkylthio group, an arylthio group, a heterocyclic oxy group, a heterocyclic thio group or an azolyl group, or R₁ and R₂ are bound to each other to form a ring, and M represents an alkali metal, which comprises reacting a compound represented by the general formula (I):
      wherein R₁ and R₂ are the same as defined for the general formula (II), with an alkali metal hydride; and a process for producing a 3-iminonitr8le represented by the general formula (III):  
      wherein R₁ and R₂ are the same as defined for the general formula (I), which comprises mixing the compound represented by the foregoing general formula (II), which was obtained by the reaction between the compound represented by the foregoing general formula (I) and the alkali metal hydride, with a protic solvent, are disclosed.
Patent EP-0387410-A1 (EP)
Inventor: BUTZEN JAMES K
IPC: F16P1/02
Filed: 1989-11-27
Abstract: A cover (36) for use with a motor (24) and handle extending from the motor comprising, a soft, resilient, fairly rigid, thermoplastic elastomeric material of one-­piece construction. The cover has a first body portion (38) having a sidewall (40) and a dome (44) extending from the side­wall defining a cavity (42) to receive the motor, with the dome being spaced from the motor to define a chamber (48) between said dome and motor which serves as a muffler to reduce noise. The cover has a hollow second body portion (50) extending from the first body portion and having a bore (37) to receive the handle.
Patent EP-0372550-A1 (EP)
Inventor: COGNOLATO LIVIO
IPC: C03C13/04
Filed: 1989-12-07
Abstract: Silica intended to form the core of an optical-fibre preform is deposited as an unvitrified soot inside a reaction tube, where a non-aqueous solution of dopant precursor(s) is then introduced without removing the tube from the lathe.
Patent EP-0432310-A1 (EP)
Inventor: DELONG EDWARD A
IPC: D21C3/02
Filed: 1989-12-15
Abstract: The chemical components of lignocellulosic material that have been dissociated by a steam explosion process can be extracted from the mixture of components using a solvent extraction process. The dissociated lignocellulosic material is put in a column and the substances which are soluble in water, alcohol and caustic are leached out of the mixture by solvent extraction with relatively small volumes of those solvents. No agitation is used. Substantially pure cellulose remains in the column and it can be bleached before removal from the column.
Patent EP-0345879-A1 (EP)
Inventor: LANATI PAOLO
IPC: F02P15/02
Filed: 1989-06-02
Abstract: The device comprises a control centre arranged to control a first and a second ignition coil and to operate the engine under double ignition during normal use and under single ignition during full induction; in this latter case, ignition by the spark plugs of a first set is alternated with ignition by the spark plugs of a second set, for predetermined numbers of engine cycles.
Patent EP-0358313-A1 (EP)
Inventor: KISSEL CHARLES L
IPC: D06M15/285
Filed: 1989-07-11
Abstract: A polymer comprising pendant functional groups having the formula
     wherein R 1  is a divalent radical and X is selected from organoacyl and cyano, is shaped, for instance by being applied to a substrate, and cross-linked by exposure to radiation having a wavelength in the range of about 10- 3  to about 400 nm to form an article.
Patent EP-0369576-A1 (EP)
Inventor: LACHMAN IRWIN MORRIS
IPC: B01J29/83
Filed: 1989-08-14
Abstract: A catalyst system for the oxidation of hydrocarbons, carbon monoxide, and the reduction of nitrogen oxides is provided. The unique synergy of the catalyst system, a combination of molecular sieves and noble metals, provides a system that partially or entirely replaces the need for rhodium as a catalyst in three way catalyst systems.