baber/WOPTO huggingface dataset:
Patent EP-0415354-A2 (EP)
Inventor: PARKS DAVID LEROY DR
IPC: C07C201/08
Filed: 1990-08-28
Abstract: This invention relates to an improved process for the recovery and regeneration of nitric acid from spent acid obtained from the mixed acid nitration of aromatic compounds. In that process a mixed acid of sulfuric acid and nitric acid is contacted with an aromatic composition at a temperature and pressure sufficient for producing a nitroaromatic composition and a spent acid containing unreacted nitric acid, sulfuric acid and solublized nitroaromatic compounds in said spent acid. The improvement comprises initially heating the spent acid to a temperature of from about 120 to 200°C for a time sufficient to convert said nitroaromatics in said spent acid to a nitroaromatic composition having a boiling point greater than 300°C at atmospheric pressure and then flash distilling the hot spent acid containing nitroaromatics compositions at a pressure from about 5 to 15 psia and temperature of 150 to 200°C. Nitric acid is removed as an overhead vapor fraction in preselected concentration and sulfuric acid and nitroaromatics are obtained as a bottoms liquid stream from said flash distilling step. The nitroaromatics are then removed from the liquid stream. Sulfuric acid obtained from this process is essentially free of color and suited for concentration.
Patent EP-0417592-A2 (EP)
Inventor: HERMANNS KLAUS DR RER NAT
IPC: B01D5/00
Filed: 1990-09-03
Abstract: A solvent recovery device, especially for plants manufacturing web-type materials, preferably audio and video tapes, is fitted with a heat exchanger which recycles preferably a major part of a gas, prepurified by removal of solvents, from downstream of a solvent precipitator via a line and heats it against the flow of the solvent-laden gas from the dryer, in order then to recycle the heated major part into the dryer; a preferably smaller part of the prepurified gas is freed of remaining solvent residues in a low-temperature part downstream of the solvent precipitator, made up by a part of inert gas thus vaporised and then to be fed to locks of the dryer to generate there a positive gas flow directed both into the dryer and outwards. The proposed process can be carried out especially in the device described. <IMAGE>
Patent EP-0455884-A2 (EP)
Inventor: SCHOENHERR WALTER
IPC: H01J5/48
Filed: 1990-12-20
Abstract: The invention relates to a single-cap electrical lamp, preferably a high-pressure discharge lamp, for use in a motor vehicle headlight, and to a method for producing such a lamp. In order to ensure a positively locking, vibration-proof firm seat of the lamp bulb (1) in the retaining part (2) of the cap, a means (7), which can be used for high-frequency-induced heating, is arranged in the retaining part (2) in the region of the tubular extension (6) of the lamp bulb (1). A high-frequency pulse is induced in said means with the aid of an external device, so that the plastic mass (17) of the retaining part (2) melts in the region of the extension (6) of the lamp bulb (1). Once the plastic melt (17) has cooled, there is a good adhesive bonded connection between the wall of the lamp bulb (1) and the material of the retaining part (2). …<IMAGE>…
Patent EP-0425040-A2 (EP)
Inventor: MORONI GIAMPIERO
IPC: F04D29/26
Filed: 1990-10-22
Abstract: A device for coupling a fan to its drive shaft, particularly in fan-assisted domestic electric ovens, characterised by providing on the drive shaft (2) two opposing recesses (6, 7), said recesses (6, 7) being arranged to cooperate with corresponding recesses (10) provided in a bush (3) associated with the fan (1), to define a seat for an elastic element (12) which effects the axial and torsional locking of the parts (1, 2).
Patent EP-0383420-A2 (EP)
Inventor: MEUER JOHANNES DIPL-ING
IPC: B60R17/02
Filed: 1990-02-14
Abstract: In a central lubricating installation which is primarily intended for commercial vehicles the running time of the pump unit (2) supplying lubricant to the lubricant distributors (6, 7) is controlled as a function of the ambient temperature, determined by means of a temperature sensor (23).
Patent EP-0390608-A2 (EP)
Inventor: YONEHARA TAKAO
IPC: H01L21/20
Filed: 1990-03-30
Abstract: Polycrystalline silicon thin-films having a large grain size are formed by preparing a substrate of amorphous surface comprising first regions containing tin atoms at a higher content and second regions containing tin atoms at a lower content or not substantially containing them, and then heat-treating the substrate to grow crystal grains from crystal nuclei formed only in the first regions.
Patent EP-0400919-A2 (EP)
Inventor: PATRICK PAUL H
IPC: G01S7/529
Filed: 1990-05-25
Abstract: The invention relates to a hydroacoustic sonar system in which received signals are processed without extensive filtering thereby to conserve higher fourier components of the received signals and so conserve useful information of targets. This is achieved by using a wideband detector module to effect demodulation of the received signals, and so eliminating the usual intermediate frequency stage. The module comprises a wideband input amplifier (25), a wideband full wave detector (26) and an active low pass filter (27) having a cut off frequency of at least 50 kHz.
Patent EP-0412778-A2 (EP)
Inventor: EVANS PHILIP ANTHONY
IPC: A61C13/00
Filed: 1990-08-07
Abstract: A method for the production of full or partial dental restorations including veneers, crowns, inlays, onlays, and bridge structures, and dental restorations produced by the method. The method utilises the technique of flame spraying to form a basal layer of a technical ceramic based material upon which porcelains are applied to produce a strong, aesthetically acceptable and custom made dental restoration. The technical ceramic based material may be Alumina, Zirconia, Titania, or combinations thereof, and the flame spraying may, be a direct method or an indirect method The technical ceramic based material may include small amounts of silicate based materials.
Patent EP-0465745-A2 (EP)
Inventor: OZEKI JIRO
IPC: A63H23/02
Filed: 1990-10-31
Abstract: A sailing boat model adapted for exhibition and for actual sailing on water includes a hull (1), keel means (2) provided on a bottom portion of a midship of the hull to extend downward from the hull, rudder means (3) provided on a bottom portion of a stern of the hull, mast means (4) provided on the hull to extend upward from the hull, sail means (5,6) connected to the mast means, the hull, the keel means, the rudder means, the mast means and the sail means having relative dimensions which simulate an actual sailing boat, and balancing weight means (7,8) detachably attached to the bottom portion of the midship of the hull to lower a center of gravity of the sailing boat model when it is sailed on the water.
Patent EP-0439947-A2 (EP)
Inventor: ETRA WILLIAM
IPC: G11B27/10
Filed: 1990-12-20
Abstract: A video image bank system for preparing an edit tape and associated edit list from a library of stock video image sequences uses a set of video disks (24) with an associated library index. A microprocessor (32) or personal computer (12) is loaded with the library index, and an operator selects an initial set of image sequences from a menu or by using key words, specifically or highlighted in a word processor text file, for a desired effect. Groups of still frames, one from each identified image sequence, are displayed and the operator selects any one of the represented image sequences for addition to the edit tape (30) and the associated edit list (28). Once all the desired stock video image sequences have been selected from the library and transferred to the edit tape and associated edit list, these sequences may readily be added to a production video sequence using normal editing procedures.
Patent EP-0398781-A2 (EP)
Inventor: MORAN KEVIN E
IPC: G06T1/00
Filed: 1990-05-04
Abstract: The invention relates to an inspection system for inspecting the surfaces of wafers, LCD's and film substrates for flaws. The system includes a scanning laser inspection system (50) for quickly inspecting the surface and identifying and locating the flaws. The system generates and displays a flaw map graphically illustrating the article surface and the respective locations of the flaws for subsequent optical inspection. The operator selects a flaw and an optical inspection system (60) is positioned over the selected flaw to provide a magnified image of the flaw. The operator may optically inspect all or any number of the flaws. The invention also includes means (72) for spectrometrically analyzing the reflected light to further identify the flaw.
Patent EP-0428471-A2 (EP)
Inventor: WEDEL GREGORY LYNN
IPC: F26B13/16
Filed: 1990-10-11
Abstract: A vacuum guide roll apparatus (10) is disclosed for guiding a web (W) between an upstream dryer and a down­stream dryer of a dryer section. The apparatus includes a perforate roll shell (18) having a first and a second end (20,22). The shell defines an elongate chamber (24) which extends between the first and the second ends. A first and second shaft (26,28) are rigidly secured to and disposed coaxially relative to the shell. The shafts are disposed adjacent to the first and second ends respectively of the shell. The shafts define respectively a first and second journal (30,32). A first and second bearing (34,36) coope­rate with the first and second journals respectively for rotatably supporting the roll shell. A housing (38) is disposed coaxially relative to the shell and adjacent to one of the shafts. The housing defines a passageway (40) which is connected to a source of partial vacuum (42). A first annular seal (44) is disposed between the housing and the one shaft for sealing the housing relative to the one shaft. A second annular seal (46) is disposed between the housing and the shell for sealing the housing relative to the shell so that when the shell rotates relative to the housing, the passageway (40) is sealingly connected to the elongate chamber such that a partial vacuum is generated within the chamber for urging the web towards the perforate shell.
Patent EP-0445819-A2 (EP)
Inventor: KAWABE YASUMASA C O FUJI PHOTO
IPC: C07C49/83
Filed: 1991-03-07
Abstract: A novel positive type photoresist composition is provided comprising a quinodiazide compound and an alkali-soluble resin as essential components, characterized in that there is contained at least one of compounds represented by formulae (I) to (VI):
     
       
     The positive type photoresist of the present invention exhibits excellent sensitivity, percent film remaining, resolution, heat resistance, resist shape and developability.
Patent EP-0475189-A2 (EP)
Inventor: BAUER HANS-JOERG
IPC: A61L27/36
Filed: 1991-08-27
Abstract: The invention relates to an implant material based on natural bone, which material is a sintered ceramic material in which the porous fine structure of the bone is present in essentially unchanged form and which comprises more than 99% of hydroxyapatite.
Patent EP-0474100-A2 (EP)
Inventor: HIBI KEIICHI
IPC: H04N7/26
Filed: 1991-08-27
Abstract: An image encoding apparatus which is capable of keeping a quality of an encoded image even though a part of information is lost on a communication line, the image encoding apparatus includes a unit (36) for quantizing transform coefficients and for outputting a quantized output signal and a quantized error signal, a unit (37) connected to the quantizing unit (36) for controlling a quantizing level used in the quantizing unit (36) so that the transform coefficients is quantized in accordance with the controlled quantizing level, an error quantizing unit (38) connected to the quantizing unit (36) for quantizing the quantized error signal output from the quantizing unit (36), and an error encoding control unit (39) connected to the error quantizing unit (38) for controlling a requantizing level used in the error quantizing unit (38) so that the quantized error signal is requantized in accordance with the controlled requantizing level.
Patent EP-0496956-A2 (EP)
Inventor: HAEFNER HANS WILHELM
IPC: G01L3/14
Filed: 1991-10-28
Abstract: A force-measuring device (10) has a force-transmission element consisting of a block (14) of essentially incompressible elastomeric material for transmitting forces to at least one force or pressure sensor (30) which is arranged inside the block or in close contact with its elastomeric material, the block (14) being tightly enclosed in such a way that it is deformable in the axial force-measuring direction but is virtually inextensible in the cross-section essentially perpendicular to the axial force-measuring direction. 
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Patent EP-0489394-A2 (EP)
Inventor: IMAI KIYOSHI LIONSMANSION NIJO
IPC: G01R31/3167
Filed: 1991-12-03
Abstract: A semiconductor integrated circuit having a test circuit built therein is disclosed which comprises an A/D converter to be connected to an peripheral circuit, a digital circuit connected to the A/D converter, a digital signal switching device for connecting the output of the A/D converter and that of the digital circuit selectively and a boundary scan output circuit connected to the output of the digital signal switching device connects the A/D converter to the boundary scan output circuit in a normal mode and the signal fetched in the boundary scan output circuit are outputted therefrom in test mode. Semiconductor integrated circuits having an analog circuit built therein and an analog integrated circuit in which a test circuit is built-in are also disclosed.
Patent EP-0492314-A2 (EP)
Inventor: STOLTE JOHANNES
IPC: H04N9/29
Filed: 1991-12-13
Abstract: 2.1. In HDTV sets having a 16:9 picture tube, it is required to completely switch off the decayed demagnetisation current by means of a relay. It is known to control the relay from the secondary side of the switched-mode power supply. The relay contact is then on the mains-connected hot side and the relay winding is on the mains-isolated cold side of the switched-mode power supply. A relatively expensive relay must therefore be used which has a dielectric strength according to VDE. It is the object to modify the circuit in such a manner that a relay can be used which does not have any special requirements for dielectric strength. 
<??>2.2. The relay winding (A) is connected in series with the primary operating winding (5) of the switched-mode power supply and is bypassed by an NTC resistor (14). 
<??>2.3. Particularly for television sets with a 16:9 picture tube. 
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Patent EP-0441457-A2 (EP)
Inventor: KING IAN R
IPC: A01N43/40
Filed: 1991-02-08
Abstract: Larger (C₆-C₁₂) esters of substituted 2-pyridinyloxyalkanoic acids, such as 1-methylheptyl (4-amino-3,5-dichloro-6-fluoro-2-pyridinyloxy)acetate, are prepared in high yield and purity by first preparing the methyl or ethyl ester and then transesterifying with a C₆-C₁₂ alcohol. The methyl or ethyl ester can be prepared by alkylation of an alkali metal salt of 4-amino-3,5-dichloro-6-fluoro-2-pyridinol with methyl or ethyl chloroacetate and the transesterification can be carried out in the presence of a tetraalkyl titanate catalyst.
Patent EP-0438216-A2 (EP)
Inventor: GRAY RICHARD THOMAS
IPC: C08L101/02
Filed: 1991-01-07
Abstract: Emulsion polymers are disclosed which contain selectively swellable emulsion polymer functionalities and which are cross-linked before film formation to an extent that still allows the polymers to form a film upon application, which film is removable with a stripper solution containing swellant for the polymer functionality. When the polymers are formulated into sacrificial coatings, the polishes produce detergent resistant and removable finishes.
Patent EP-0454505-A2 (EP)
Inventor: SUZUKI ATSUHIKO
IPC: H04L12/413
Filed: 1991-04-29
Abstract: A multipath transmission system for communicating between devices includes a plurality of multiplex nodes connected in parallel to three common signal transmission lines(A,B,C). The multiplex node includes a transmission control circuit(72) which is allotted to a corresponding one of the devices, receives a multiplex signal from the device in response to a transmission request of another multiplex node and transmits the multiplex signal to the signal transmission line(A,B,C). It includes a voltage detection circuit for detecting a voltage generated in at least one of the transmission lines(A,B,C), a reception control circuit(73) for specifying the transmission state of the signal transmission line according to a voltage detected by the voltage detection circuit(74), a communication control device(71) for communicating with the multiplex nodes(10-70) to detect a fault, and a voltage setting circuit(76) for changing a voltage of the signal transmission line when a fault is detected by the communication control device(71).
Patent EP-0475567-A2 (EP)
Inventor: BENGSTON JON E
IPC: H05K3/34
Filed: 1991-07-17
Abstract: Conductive copper areas of printed circuits, such as through-holes, pads and lands, to which electronic components can thereafter be electrically connected by, e.g., wave soldering, are provided with a coating of nickel or cobalt, such as by electroless deposition from nickel- or cobalt-boron and nickel-or cobalt-phosphorous plating baths, or entirely or partly electrolytically, followed by a coating of a protective material which protects the nickel or cobalt coating from oxidation prior to the subsequent solder connection operation, is wettable by solder in the subsequent solder connection operation, and substantially dissolves in the solder in the subsequent solder connection operation without adverse effect on the solder joint between the electronic component and the through-hole, pad or land. A particular preferred protective material is gold, such as applied by deposition from immersion or electroless gold plating baths. The invention renders the so-treated areas readily susceptible to the soldering of components thereat, thereby avoiding the need for hot air solder levelling.
Patent EP-0472384-A2 (EP)
Inventor: KOIKE YASUHIRO
IPC: G02B6/028
Filed: 1991-08-16
Abstract: Plastics optical fibres wherein the relationship between the refractive indices of the core and clad materials and the diameter of the core are such that the fibres exhibit single mode or other specific mode number characteristics.
Patent EP-0447319-A2 (EP)
Inventor: KIM DAE YOUNG
IPC: G11B20/10
Filed: 1991-03-13
Abstract: A continuous data input control system for an optical disk comprising an optical disk digital signal processor (1) for outputting serial data, beat clock signal and left/right clock signal, an optical disk ROM decoder (3) for decoding and transmitting the data from the processor, a microprocessor (5) for controlling the whole system, and a data input controller (2) for controlling the output of the digital signal processor. 
     The data input controller (2) including a clock generator, a counter, a first control signal generator, an AND gate, a stop point detector for shifting the serial data of the digital signal processing unit (1) by being synchronized with the clock pulse signal of AND gate, latching the data when the buffer RAM (4) is in the overflow state in response to the output level of the control signal generating unit, and detecting the data of the stop point by comparing the latched data with the data being presently inputted, when the overflow of the buffer RAM (4) is released, a second control signal generator, and a switching unit. 
     By these arrangements, digital audio data on the optical disk can be reinputted from the data of the data input stop point, after the data input operation is stopped due to a buffer overflow.
Patent EP-0488949-A2 (EP)
Inventor: BEHM DEAN TALLACK
IPC: C08G59/50
Filed: 1991-11-20
Abstract: The present invention relates to a two component epoxy adhesive system comprising an epoxy component comprising (1) at least one aromatic multifunctional epoxy resin; and a hardener component comprising (1) a polyamide of a dimer fatty acid, (2) at least one aliphatic or cycloaliphatic amine and (3) at least one aromatic amine; and wherein CR a polyglycidyl ether of sorbitol, having more than 2 oxirane groups per molecule, as an accelerator is present in the epoxy component and/or a tertiary amine accelerator is present in the hardener component.
Patent EP-0496321-A2 (EP)
Inventor: MOBLEY KENNETH J
IPC: H03F3/343
Filed: 1992-01-20
Abstract: A constant current power supply circuit for an integrated circuit memory which is well suited for driving a high capacitance load, such as a large number of sense amplifiers. A first circuit provides a constant current source (10) and a second "current mirror" circuit provides an output current proportionate to the first circuit, but at a higher desired level of current. The constant current circuit is achieved using two cross-coupled FET transistors (16,18, 16',18') and two resistances (12,22) such that the conductivity of each transistor is inversely related to the conductivity of the other. The circuit reaches a constant current equilibrium which is largely independent of operating voltage or load, but rather depends on the relative values of the components.
Patent EP-0521253-A2 (EP)
Inventor: STILL MICHAEL
IPC: H04L5/14
Filed: 1992-04-23
Abstract: A method for bidirectional communication of digital data via an optical fibre is specified by means of which the data of one transmission direction are transmitted in gaps in the other transmission direction. For this purpose, the bits of continuous data streams are shortened at least by a factor of 4 and the shortened bits of the data stream of one transmission direction are transmitted in the gaps, produced by the shortening, between the bits of the data stream of the other transmission direction in each case. The bits are lengthened again to their original width in time for recovering the continuous data streams in the receiving stations.
Patent EP-0520371-A2 (EP)
Inventor: LOEHER HEINZ-JOSEF DR
IPC: A01N25/32
Filed: 1992-06-23
Abstract: Compounds of the general formula I or their salts, <IMAGE>  in which     X<1> is R<1> and X<2> is COR or X<1> is COR and X<2> is R<1> and   X is O or S,   R is OH or SH and acid derivatives thereof as defined in Claim 1, R<1> is hydrogen, (substituted) alkyl, (substituted) alkenyl, (substituted) alkinyl, (substituted) cycloalkyl, (substituted) cycloalkenyl, are suitable as safeners in cereals, rice, maize and other crop plants. The invention also relates to a screening method for the indirect detection of safener activity by measuring the increased degradation rate of a herbicide in germinating seed, in which method a radiolabelled herbicide is used.
Patent EP-0521421-A2 (EP)
Inventor: TAKASE MINORU
IPC: G01N35/00
Filed: 1992-06-27
Abstract: A reagent for analysis (e.g. an antibody) is fixed on a rotatable disk 100 having a plurality of channels 102. The flow paths of the channels, inclusive of reagent fixing portions 103, are treated with an aqueous solution consisting essentially of protein so that the contact angle with water is not more than 70° (104). The sample for analysis, that is a liquid sample containing an antigen, is dripped on each channel or the disk is rotated for developing the sample for analysis for reacting the reagent for analysis and the liquid sample by way of an antigen-antibody reaction, and changes produced by the reaction are measured on the disk for analysis. This results in improved fluidity of the sample for analysis in the disk-shaped sensor to improve analytic accuracy and reproducibility.