baber/WOPTO huggingface dataset:
Patent EP-0429824-A2 (EP)
Inventor: MATYAS STEPHEN M
IPC: H04L9/10
Filed: 1990-10-15
Abstract: A cryptographic system and method is provided which accepts a key K encrypted under a key formed by exclusive-ORing a key-encrypting key KK with a first control vector C5 and outputs the same key K encrypted under a key formed by exclusive-ORing KK with a second control vector C6. The set (C5, C6) represents a mapping of the type and usage of the key K defined by the control vector C5 to the type and usage defined by the control vector C6. The set of allowable control vector mappings, that is from C5 to C6, are defined in a control vector translation table (50), which is specified in advance by authorized installation personnel.
Patent EP-0432744-A2 (EP)
Inventor: ITOU TAKEO C O INTELLECTUAL PR
IPC: H01J29/32
Filed: 1990-12-11
Abstract: A color cathode ray tube (1) includes a vacuum envelope (2) having, a faceplate (5), an optical filter (9) formed on an outer surface of the faceplate (5), and a phosphor screen (8) formed on an inner surface of the faceplate (5) and essentially consisting of red, blue, and green emitting phosphors, wherein the red emitting phosphor essentially consists of a  
 
        Y₂O₃:Eu 
 
phosphor, an Eu activation amount thereof being not less than 3.0 mol% and not more than 9.0 mol% with respect to a  
 
        Y₂O₃ 
 
amount as a base material, and light filtering means provided in front of the faceplate for selectively transmitting light, having the maximum absorption wavelength in wavelength range of 575 ± 20 nm in connection with wavelength range from 400nm to 650 nm and being satisfied with the following relationship:            T       min        ≦ T₅₅₀ ≦ T₅₃₀, 1 ≦ T₄₅₀/T₅₃₀ ≦ 2, 1 ≦ T₆₁₅/T₅₃₀ ≦                 2, 0.7 ≦ T₄₅₀/T₆₁₅ ≦ 1.43, T₆₁₅/T₅₈₀₋₆₀₀ ≧ 1.1,           wherein T₄₅₀, T₅₃₀, T₅₅₀, T₆₁₅, T min  and T₅₈₀₋₆₀₀ represent the transmissivities for lights of wavelength of 450 nm, 530 nm, 550 nm, 615 nm, the said maximum absorption wavelength in wavelength range of 575 ± 20 nm and the maximum absorption wavelength in wavelength range of 580 nm to 600 nm, respectively.
Patent EP-0379352-A2 (EP)
Inventor: PRICE ANTHONY GEORGE
IPC: B60T13/14
Filed: 1990-01-17
Abstract: An hydraulic booster for a vehicle braking system has a housing (1) provided with a bore (2), an inlet (3) and an outlet (4) for connection to a source of pressure and a reservoir respectively, an input piston (5) and a boost piston (7) working in the bore (2), a boost chamber (10) defined behind the boost piston (7), and a chamber (15) defined in front of the boost piston (7) and connected to the outlet (4), with pressurisation of the boost chamber (10) by fluid from the source being controlled by control valve means operable in response to an input load applied to the input piston (5). The control valve means has a single normally-closed inlet valve (12) operated by the boost piston (7) to control communication between a single inlet passage (18) and the boost chamber (10), and variable restriction means (13) operated by relative movement of the boost piston (7) and input piston (5) to control fluid flow from the boost chamber (10) to the outlet (4) through a connection (14). The boost piston (7) also has passage means (16) and one-way valve means (17) to allow fluid flow from the forward chamber (15) to the boost chamber (10) on initial movement of the boost piston (7). This fluid helps to fill the void created in the boost chamber (10) on initial movement of the boost piston (7), thus providing feel for the operator and improving the response of the booster.
Patent EP-0382349-A2 (EP)
Inventor: TILLOTSON JOHN G
IPC: B32B7/02
Filed: 1990-01-18
Abstract: A carpet product (10) includes a pile fabric layer (20), a stabilizing layer (30) adhered to the back of the pile fabric layer (20) to provide dimensional stability against concentrated stresses exerted against the upper surface of the carpet and a balancing layer (40) disposed below the stabilizing layer (30) which has thermal response and moisture absorption characteristics selected for compatibility with the pile fabric layer (20). When the carpet product (10) is exposed to temperature extremes or changes in ambient humidity, stresses exerted by the expansion or contraction of the pile fabric layer (20) create a bending moment around the stabilizing layer (30). However, the balancing layer (40) creates comparable stresses on the lower side of the stabilizing layer (30) and exerts an equal-but-opposite bending moment which balances the moment exerted by the pile fabric layer (20). The resulting carpet product exhibits enhanced flatness and floor hugging characteristics when subjected to temperature extremes or changes in the ambient humidity.
Patent EP-0413627-A2 (EP)
Inventor: NISHIBORI SADAO
IPC: D06M13/342
Filed: 1990-08-09
Abstract: Fine particles of gelatin and amino acid used in the present invention are particularly suitable for use in combination with resins. 
     Gelatin particles used in the present invention have the number-average molecular weight of 8,500 or less, and amino acid partiles with the number-average molecular weight of 200 or less, so that efficient pulverization becomes possible and that gelatin and amino acid particles maintain their intrinsic properties as they are not subject to denaturation during pulverization. Resultant particles are neither too large nor too small but are uniform in size and are particularly suitable for use in combination with resins.
Patent EP-0384853-A2 (EP)
Inventor: BOUBEHIRA MOHAMMED
IPC: F01N13/14
Filed: 1990-01-10
Abstract: Chemical reactor (2) intended for the chemical reaction treatment of a gas mixture in contact with a catalytic material, the said reactor comprising a treatment vessel (17) provided with an entry (23) for the gas mixture to be treated and an exit (24) for the treated mixture including the products of the said chemical reaction, a mass (251 to 257) of the catalytic material, arranged in the vessel, permeable to the flow of the gas mixture between the entry and the exit of the vessel, and the catalytic material in solid form consisting chiefly of the material which is catalytically active with regard to the said chemical reaction, for example a metal, with the exclusion of any substrate for the superficial support of the said substance, characterised in that the catalytically active substance chosen can be shaped by sintering and the catalytic material is obtained by the partial sintering of the active substance, leaving remaining in the latter open passages or pores (1a) for the internal travel of the gas mixture to be treated in contact with the surface of the active substance. <IMAGE>
Patent EP-0388367-A2 (EP)
Inventor: CATTANI AUGUSTO
IPC: A61C1/00
Filed: 1990-02-15
Abstract: The present invention concerns a disconnector for the protection of the watermain, for use in particular in medical plants. 
     The disconnector comprises an air diaphragm which is interplaced between the watermain and the medical plant which uses water taken from the watermain, thus keeping them separate under every kind of operative condition, and in this way preventing any passage of pollutants out of the plant into the watermain.
Patent EP-0432110-A2 (EP)
Inventor: CARENINI GIOVANNI PIETRO
IPC: D06F57/08
Filed: 1990-11-22
Abstract: The invention relates to a folding clothes horse comprising two pairs of legs (11,12) which are crossed and hinged to each other and where the top of the legs (12) is fitted with a cap (18) which forms a U-shaped slot (20) designed to support and separately engage a cross piece (13′) of the grid on the opposite end to the other pair of legs (11).
Patent EP-0461577-A2 (EP)
Inventor: WATANABE NORITO
IPC: G06T13/00
Filed: 1991-06-10
Abstract: An apparatus for generating the motion path (102) of an object includes an input unit (103, 104, 701) for inputting information representative of the position of a start point (511) of the motion of an object, at least one of the magnitude and direction of a velocity at the start point, an end point (521) of the motion of the object, and at least one of the magnitude and direction of a velocity at the end point, and a calculation unit (702, 703) for calculating a motion path from the start point to the end point, in accordance with the information inputted to the input unit. As an alternative of the position and velocity of an object, the rotary angle and angular velocity of an object may be used to represent the facing direction of the object. The apparatus may include a display device (101).
Patent EP-0466125-A2 (EP)
Inventor: KONISHI MITSUHIRO
IPC: C07D213/30
Filed: 1991-07-10
Abstract: A styryl compound of the formula(I):
     wherein each symbol is as defined in the specification, a pharmaceutically acceptable salt or an ester thereof is disclosed. 
     Since the compounds of the present invention possess potent and long-lasting leukotriene-antagonistic actions and inhibitory actions against leukotriene, and exhibit better absorption by the oral administration. 
     Further, the compounds of the present invention possess 5-lipoxygenase-inhibitoryactions and/or cyclooxygenase-inhibitory actions, inhibitory actions to biosynthesis of LTB4, chemotactic actions against human leucocyte, chymase-inhibitory actions, inhibiyory actions to release of histamine or anti-histamine actions. 
     Therefore, they are useful as the prophylactic and therapeutic medicines for brochial asthma, chronic bronchitis, atopic dermatitis, allergic rhinitis, allergic arthritis, allergic conjunctivitis, hay fever, urticaria, alimentary allergy, pain, pyretolysis, rheumatoid, thrombosis, coronary vascular diseases, ischemic heart disease, peptic or duodenal ulcer and the like.
Patent EP-0476389-A2 (EP)
Inventor: YOSHIDA SEIKOH
IPC: C30B15/22
Filed: 1991-08-29
Abstract: A method of growing single crystal is provided, wherein, upon growing a single crystal of compound semiconductors, in particular, single crystal of InP by flat top shape, the crystal is pulled up after the temperature drop of the melt (13) has almost stopped and further at the point of time when the meniscus at the interface of solid-liquid can be seen over the whole circumference of the surface of the melt, for the purpose of pulling up the single crystal without forming a facet at the shoulder portion of the crystal. The invention achieves greatly decreased generation probability of twin crystals and a drastically improved retention of single-crystallization.
Patent EP-0475377-A2 (EP)
Inventor: SCHAPER HERBERT
IPC: B29C45/00
Filed: 1991-09-11
Abstract: The invention relates to a process for recycling waste or used articles made of plastic, in particular crosslinked plastic, in particular polyurethane or polyurea, involving the following process steps:   a) the waste or used articles as raw material are comminuted, in particular granulated, the size of the comminuted raw material being </= 4 mm, in particular </= 0.7 mm; b) the comminuted raw material is mechanically mixed with thermoplastic granules; c) the raw material/thermoplastic mixture is injection moulded to give the article. l
Patent EP-0488182-A2 (EP)
Inventor: KUROSAWA KOUICHI
IPC: C08G64/20
Filed: 1991-11-26
Abstract: There disclosed is a process for producing polycarbonates, which comprises transesterifying (A) at least one compound selected from the group consisting of aromatic dihydroxy compounds, aliphatic dihydroxy compounds, bisesters of aromatic dihydroxy compounds, bisesters of aliphatic dihydroxy compounds, carbonates of aromatic dihydroxy compounds, and carbonates of aliphatic dihydroxy compounds, and (B) at least one compound selected from the group of diaryl carbonates, dialkyl carbonates, and alkylaryl carbonates, in the temperature range of 100°C to 330°C in the presence of an inert solvent in an amount of 1 to 60% by weight based on the total of the theoretical amount of polycarbonate produced from the said compounds (A) and (B) and the amount of the inert solvent. 
     According to the present invention, a polycarbonate 1which is excellent in color tone (transparency), heat resistance, and water resistance can be efficiently produced simply and at a low cost.
Patent EP-0443818-A2 (EP)
Inventor: HIROTA KATSUAKI
IPC: H04N5/232
Filed: 1991-02-20
Abstract: A focus detection signal is generated from the video signal produced by a video camera even if the scene being imaged is of relatively low contrast or contains areas of high brightness. The autofocussing is performed by deriving higher frequency components of that video signal, detecting when those higher frequency components exceed a minimum threshold level, sensing when the video signal exceeds a maximum threshold, and integrating those higher frequency components which exceed the minimum threshold, except during an interval when the video signal exceeds the maximum threshold, thereby producing the focus detection signal.
Patent EP-0457523-A2 (EP)
Inventor: CLARK JOHN HAMILTON
IPC: H01S3/105
Filed: 1991-05-13
Abstract: A laser apparatus and method is disclosed comprising a first lasant material (14) which is located in an optical cavity and which produces laser radiation of a first wavelength, and a second lasant material (12) which is pumped by radiation from the first lasant material, which absorbs laser radiation at the first wavelength in an amount generally comparable to the optimum output coupling and which lases at a second wavelength. The first lasant material and the second lasant material are preferably selected to have minimal losses at the first wavelength and at the second laser wavelength due to excited-state absorption. In one embodiment the first lasant material is selected to be substantially transparent to optical radiation at the second laser wavelength.
Patent EP-0457533-A2 (EP)
Inventor: STEERE ROBERT E JR
IPC: B23P23/02
Filed: 1991-05-13
Abstract: The grinding wheel (28) is provided with a plurality of circumferentially spaced apart micrometer screws (52) which can be adjusted from time to time in order to index the grind wheel (28) into different grinding positions. An indexing mechanism (61) can be mounted on the face of the disk (30) with drive pins (80) extending through the disk (30) into the micrometer screws (52) for simultaneous rotation of the screws (52). The indexing mechanism (61) is lightweight and can be readily attached to the face of the grind disk (30).
Patent EP-0461763-A2 (EP)
Inventor: RICHARDSON DAVID LEE
IPC: G01N29/265
Filed: 1991-05-17
Abstract: An automated system for examining incore housing welds in a nuclear reactor from above is disclosed. The probe uses both ultrasonic and eddy current non-destructive inspection coils to examine the weld for indications, or flaws. It is inserted into the incore housing tube from above because of the high radiation exposure workers experienced using the prior method of inserting a probe into the incore housing from below. This is conveniently done when the incore flux monitors are removed during standard maintenance, and is performed from the refueling bridge.
Patent EP-0469826-A2 (EP)
Inventor: HAGLE MICHAEL PHILIP
IPC: F16J15/32
Filed: 1991-07-29
Abstract: A relatively stationary segmented turbine engine shroud, nozzle or frame assembly is sealed against the passage of cooling air into the exhaust gas flowpath by a plurality of spline seals which cooperate with an annular stationary brush seal. The spline seals provide sealing between axially extending confronting edges of adjacent segments while the brush seal provides continuous circumferential sealing around the segments and spline seals.
Patent EP-0480658-A2 (EP)
Inventor: LANCASTER MICHAEL BP CHEMICALS
IPC: C07C39/15
Filed: 1991-10-07
Abstract: Process for producing low molecular weight phenol-aldehyde resin which has predominantly 4 phenolic units in a chain and in which the phenolic ring has a substituent R which is an alkyl group and optionally contains methylol groups on either end of the chain, by reacting formaldehyde with p-alkyl phenol in the presence of ammonia as base in a liquid reaction medium. The resins can be used in producing demulsifiers.
Patent EP-0468840-A2 (EP)
Title: Process for the selective epoxidation of unsaturated (meth)acrylates, new functional (meth)acrylates so obtained and their use in the synthesis of new polymers
Inventor: CAUBERE PAUL
IPC: B01J27/18
Filed: 1991-07-04
Abstract: A process for the opening of the epoxide function of a (meth)acrylic epoxide of formula (V): in which: (i) the (meth)acrylic epoxide is reacted with a cpd. of etherate complexes and boron trifluoride, acid salts (in the presence of the corresp. acid), halides of trialkyl- or trialkoxy-silanes - and ketones in the presence of cationic resins. (R<1>)(CH2)C-C(O)-X-R<4> (V) X = O, S, NH, NR<3> and O-(CH2)n; R<3> = 1-12 alkyl; n = 3-16; R<1> = H or 1-5C alkyl; R<4> = 2-20 C hydrocarbyl including alkyl, cycloalkyl, mono- or poly-cyclic heterocycle-alkyl or alkylaryl; the hydrocarbon gp. comprises an oxiran gp. in or at the end of the chain (for alkyl or alkylaryl) or as an endo or exo-cycle gp. (for cyclo-alkyl or hetero-cycloalkyl). R<4> may also be glycidyl, 2-oxymethyl-bicyclo-Ä2.2.1Ühept-5(6)yl or epoxy dicyclo-pentenyl- oxyethyl.
Patent EP-0453391-A2 (EP)
Inventor: LEISTENSNIDER GEORGE WILLIAM
IPC: B23C3/18
Filed: 1991-04-18
Abstract: The elongated edge of a workpiece is machined to preselected dimensions and tolerances using a numerically controlled machining system by probing the surface of the workpiece along the length of the edge to be machined to determine edge dimensions and/or its actual position and orientation at such preselected locations relative to a cutting tool holder and to the workpiece fixture, and generating and storing data indicative thereof, and machining the edge of the workpiece under the direction of a machine program which accesses that data and other known preselected part design data which has been stored and causes a cutting tool to follow the actual edge of the part, cutting the edge to preselected dimensions as the cutting tool travels relative thereto, the workpiece and the cutting tool being reoriented relative to each other as the tool moves along the edge to maintain the tool in appropriate angular and positional relation to the workpiece over the length of the edge.
Patent EP-0500071-A2 (EP)
Inventor: KAWAKAMI SOICHIRO
IPC: H01L31/18
Filed: 1992-02-19
Abstract: A process for producing a photoelectric conversion device comprising a substrate having a conductive surface, a semiconductor layer disposed on said conductive surface of substrate, a transparent and conductive layer disposed on said semiconductor layer and a collecting electrode disposed on said transparent and conductive layer, wherein one or more defective portions occurred at the semiconductor layer are repaired by means of electrolytic treatment using an electrolytic solution containing a material capable of providing an insulating material wherein the conductive surface of substrate is made to be an electrode, to thereby deposit an insulating material selectively at each of the defective portions.
Patent EP-0506070-A2 (EP)
Inventor: MURRAY REX EUGENE
IPC: C07F7/18
Filed: 1992-03-27
Abstract: There is described an improved process for the preparation of thermally labile vinyl compounds and for the preparation of vinyl compounds from thermally labile Bronsted acids which comprises reacting a vinyl derivative of a first Bronsted acid with a thermally labile Bronsted acid in the presence of a ruthenium compound at a temperature at which transvinylation occurs and recovering as a product of transvinylation the vinyl derivative of the thermally labile acid. The vinyl product derivative itself may, or may not, be thermally labile depending on the vinyl derivative of the Bronsted acid.
Patent EP-0512396-A2 (EP)
Inventor: TABATA MASAAKI NO CHIRYU DIAPA
IPC: B60G17/016
Filed: 1992-04-29
Abstract: In an active suspension of a vehicle suspending a vehicle body on vehicle wheels by actuators (36) in combination with a suspension mechanism which converts cornering forces acting at the vehicle wheels during a turn of the vehicle to a vertical force exerted to the vehicle body, the suspension force to be generated by the actuators (36) are modified based upon an active suspension calculation taking the lateral acceleration due to the turn of the vehicle into consideration, so as to compensate for the vertical force, so that the active suspension control is not undesirably exaggerated by the effect of the cornering forces.
Patent EP-0567686-A2 (EP)
Inventor: NISHIOKA TAKAO C O ITAMI WORKS
IPC: B24B19/22
Filed: 1992-07-09
Abstract: An industrially feasible method of grinding silicon nitride ceramics. The method provides a sufficiently smooth surface. Namely, the surface has a maximum height-roughness Rmax of 0.1 micron or less and a ten-point mean roughtness Rz of 0.05 micron. Further, with this method, surface damage can be repaired while grinding. The vertical cutting speed of a grinding wheel into a work should be within the range of 0.005 - 0.1 micron for each rotation of the working surface of the wheel and change linearly or stepwise. The horizontal machining speed should be within the range of 25 to 75 m/sec. With this arrangement, the contact pressure and grinding heat that generate between the work and the hard abrasive grains during grinding are combined. In other words, mechanical and thermal actions are combined.
Patent EP-0513910-A2 (EP)
Inventor: AXER KLAUS DR
IPC: H02M7/217
Filed: 1992-05-08
Abstract: A rectifier circuit is described which can be constructed completely from field-effect transistors of the same conductance type and which makes possible rectification with a low voltage drop and hence with good efficiency. A self-blocking FET is connected between an AC voltage input and a DC voltage output, and its gate is supplied with a bias voltage which reduces the effective threshold voltage FET to virtually zero. Bridge rectifier circuits can also be constructed in accordance with this principle, so that both half-wave and full-wave rectification are possible with a very low voltage drop. Various circuits are described for producing the gate bias voltage. <IMAGE>
Patent EP-0506321-A2 (EP)
Inventor: MOHAN CHANDRASEKARAN
IPC: G06F11/14
Filed: 1992-03-23
Abstract: Enhanced data availability occurs in or write-ahead logging, transaction-oriented database system by permitting new transactions to acquire access to data while restart recovery operations are proceeding. The invention permits new transactions to acquire access to data during restart recovery UNDO processing on the condition that the last update to the data occurred before a commit point measured by the beginning of the earliest-commencing transaction with uncommitted updates which was still executing when a system failure initiated restart recovery operations. During REDO processing, a transaction is permitted access to data which, in addition to meeting the commit point condition, is not in a data structure subject to the REDO processing.
Patent EP-0532153-A2 (EP)
Inventor: BHINDE MANOJ V
IPC: C07C9/18
Filed: 1992-06-01
Abstract: Straight chain paraffins are isomerized by contact with solid superacid catalyst, with reactants and/or products in a supercritical or near critical state, to optimize desired products and/or protect catalyst surfaces from deactivating deposits.