baber/WOPTO huggingface dataset:
Patent EP-0401725-A2 (EP)
Inventor: MURATORE ANTONINO
IPC: H01P7/06
Filed: 1990-06-02
Abstract: Periodical structure element capable of guiding electromagnetic waves having a propagation velocity inferior to that of light (slow waves). The element in subject is particularly well suited for applications to tavelling wave tubes as a supporting element of the electromagnetic wave which is called to interact with an electron flow. 
     The invention is essentially a set of resonating cavities interconnected by conductive wires. 
     The innovation introduced by the invention lies mainly in the greater thermal dissipation capacity which finds attractive applications to high power electron tubes.
Patent EP-0407962-A2 (EP)
Inventor: CHUJO KAORU
IPC: H04B3/23
Filed: 1990-07-10
Abstract: An adaptive echo canceller for suppressing an echo in an input signal by a pseudo echo, includes a pseudo echo generation filter (11) having a predicted impulse response sequence of an echo path as filter coefficients thereof for generating a pseudo echo, a coefficient renewal part (12, 4A) for adaptively renewing the filter coefficients of the pseudo echo generation filter, and a part for suppressing an echo by the pseudo echo which is generated by the pseudo echo generation filter. The coefficient renewal part includes a part (48) for dividing renewed filter coefficients into a plurality of groups each having a certain number of renewed filter coefficients, and a part (48, 49₁, 49₂, 47) for successively selecting one group with a predetermined period and carrying out a correction process with respect to the renewed filter coefficients within the selected group, where the correction process corrects an accumulation of errors of renewal processes.
Patent EP-0411415-A2 (EP)
Inventor: HICKMANN ECKHARD DR
IPC: C08G65/20
Filed: 1990-07-21
Abstract: Polyethercarbonsäureester der Formel AlkO- ?-?H-CH2-[-O-(CH2)4]n-O-CH2- ?H-?-OAlk                  I, in der Alk einen Alkylrest mit 1 bis 8, C-Atomen, R ein Wasserstoffatom oder den Methylrest und n eine Zahl von 3 bis 70 bedeuten.
Patent EP-0424781-A2 (EP)
Inventor: ZIBOLD ARMIN DIPL-ING FH
IPC: D06F58/08
Filed: 1990-10-16
Abstract: To increase the effectiveness of and shorten the entire drying process, in laundry dryers the invention provides for driving their laundry drum and air-circulating blower from a single motor in a reversing manner and for giving the duration of the preferred direction of rotation of the blower in comparison with the duration of its opposite direction a design ratio of approximately 1:10 to approximately 1:50 during the heating phase. <IMAGE>
Patent EP-0445369-A2 (EP)
Inventor: FUKAZAWA RYUTARO C O SEIWA TEC
IPC: A23L5/10
Filed: 1990-11-15
Abstract: An oil absorption reducing material for food cooked with fats and oils, comprising an actomyosin gel obtained by dissolving in a salt solution an actomyosin protein of animal muscle, or a powdered actomyosin obtained by forming said actomyosin gel into dry powder. Also disclosed is a method of reducing oil absorption in food cooked with fats and oils, comprising applying to the surface of food to be cooked with fats and oils an actomyosin gel obtained by dissolving in a salt solution an actomyosin protein of animal muscle.
Patent EP-0438788-A2 (EP)
Inventor: HASSELKUS HANS DIPL-ING FH
IPC: B65G47/14
Filed: 1990-12-27
Abstract: Such a device with a container holding these parts and at least one discharge device connected after the container has a gripper unit lowerable into the latter with at least one gripper which is capable of travelling approximately horizontally, channel-like conveying elements projecting into the horizontal movement path of the gripper(s) as a discharge device. The gripper is provided either with an upwardly tapering clamping aperture or with a gripping mouth (60) defined by movable gripping jaws (58). <IMAGE>
Patent EP-0398751-A2 (EP)
Inventor: MILLER JOSEPH P
IPC: H03K5/156
Filed: 1990-05-18
Abstract: A circuit for controlling the duty cycle of a high frequency logic system clock using negative feedback. A high-level buffer (18) used to drive the system clock bus receives the output of a crystal oscillator (40). The buffer output (50) is sampled by an integrator circuit which produces a voltage level corresponding to the duty cycle of the clock, and this voltage level is compared to a reference voltage using an operational amplifier (60). The op-amp output (70) is applied to the buffer input (75) as negative feedback to alter the bias level at the buffer input (75) in a way as to vary the point in the rising and falling transitions of the crystal oscillator (40) where the threshold of the buffer (48) is crossed. A circuit (52,54) monitors the clock signal output of a high-level buffer (48), and determines whether the duty cycle of the crystal oscillator (40) which drives the output buffer (48) should be increased or decreased. A corresponding DC bias to the input of the output buffer (48) causes the crystal oscillator (40) output to reach threshold levels of the output buffer (48) at different times during each clock pulse, thus adjusting the duty cycle of the buffer output (50). An RC integrator (52,54) is used to monitor the buffer output, and the output of this integrator is compared with a reference voltage in an operational amplifier (60). The output of the operational amplifier (60) biases the input (75) to the output buffer (48) to a level corresponding to a need to increase or decrease the duty cycle of the buffer output clock signal.
Patent EP-0399842-A2 (EP)
Inventor: TSUDA YOSHIO C O CHUO KENKYUSH
IPC: A61K31/47
Filed: 1990-05-25
Abstract: An emulsified preparation containing a perfluorocarbon compound comprises 5-50% (w/v) of a perfluorocarbon compound represented by the formula:
      (wherein R represents a lower perfluoroalkyl group), 1-5% (w/v) of a phospholipid, 0.01-0.1% (w/v) of a fatty acid or an ester or a salt thereof, 0.001-0.01% (w/v) of tocopherol, 0.011-1.1% (w/v) of a pH adjuster, and an adequate amount of an aqueous solvent. This emulsified preparation can be used as an oxygen-carrying infusion fluid or perfusion fluid for preserving organs.
Patent EP-0410725-A2 (EP)
Inventor: WHITTINGTON MARK C O MINNESOTA
IPC: H01Q3/24
Filed: 1990-07-25
Abstract: A circuit for selecting an input to a signal processing network from among several switchable antenna units. Each antenna unit (26) includes a winding (30) which is connected to a common signal bus. The switchable antenna units (12) may be placed in "on" or "off" states in response to a controller, such as a microprocessor (46). One terminal (36,40) of each winding (30,32) is connected to a transistor (42,48) which causes the terminal to be in an open condition when the unit is unselected, attenuating any signal which might otherwise be transmitted to the signal bus. A second winding (32) is inductively coupled to the first winding (32) and is used to improve attenuation of unselected signals.
Patent EP-0413595-A2 (EP)
Inventor: YAMAZAKI SHUNPEI
IPC: H01L21/20
Filed: 1990-08-17
Abstract: A method of manufacturing a light emitting diamond electric device is described. Discrete single crystals of diamond are formed on a semiconductor substrate by a CVD process. The formation of these crystals is carried out by forming discrete crystallization centres on the surface of the substrate and growing a single crystal at each centre. The spaces separating the crystals are filled with an electrically insulating material with the top surfaces of the crystals left exposed, and an upper electrode is provided over the insulating material and making contact with the top surfaces of the diamond crystals. When a voltage is applied between the substrate and the upper electrode, current flows in the crystals and causes them to emit light. By virtue of this method, light emitting devices having high reliability and performance can be mass produced with high yield.
Patent EP-0419209-A2 (EP)
Inventor: OSBORNE TIMOTHY WILFORD
IPC: C04B41/50
Filed: 1990-09-18
Abstract: A boron nitride-containing composition for use as a film-forming coating on substrates comprising particulate boron nitride dispersed in a solution of methyl chloroform and a solvent, with or without clay. The composition is also suitable for use in aerosol cans.
Patent EP-0430887-A2 (EP)
Inventor: FALK ROBERT A DR
IPC: C07C43/13
Filed: 1990-11-22
Abstract: Heteroatom containing perfluoroalkyl terminated oxetanes of the formula
       
 are prepared from 3,3-dihalogenated oxetanes and thiols of the formula R f -E-SH, amines of the formula R f -E-NH-R, alcohols of the formula R f -E-OH or perfluoro-amides, wherein R f  is a straight chain perfluoroalkyl of 1 to 18 carbon atoms. 
     The reaction products of these fluorinated oxetanes with nucleophiles are disclosed, as are certain functional derivatives. These products may serve as intermediates or have utility in their own right. Fluorinated polyethers derived therefrom are disclosed and include random or block compositions containing the residue from at least one R f  oxetane, containing two perfluoroalkyl hetero groups.e (ücontaining two perfluoroalkyl hetero groups. 
     These polyethers provide improved thermal stability and useful low surface energy oil and water repellent coatings for textiles, glass, paper, leather and other materials.
Patent EP-0427697-A2 (EP)
Inventor: EWEN JOHN A
IPC: C07F17/00
Filed: 1990-10-09
Abstract: This invention is for a catalyst system comprising a neutral metallocene compound, an aluminum alkyl and a Lewis acid. The Lewis acid must be of sufficient acidity to ionize a neutral metallocene compound to form a cationic metallocene catalyst. The ligands of the Lewis acid should not be reactive with the metallocene cation. Any metallocene catalyst compound having two cyclopentadienyl rings attached to a transition metal would be useful in this invention. 
     The invention is also for the process of using the catalyst system in polymerization of olefins. The metallocene is contacted with the Lewis acid. The aluminum alkyl is contacted with the olefin. The two mixtures are contacted with each other under polymerization conditions.
Patent EP-0453704-A2 (EP)
Inventor: CHYUNG KENNETH
IPC: C03C14/00
Filed: 1991-01-11
Abstract: Silicon nitride reinforcing fibers provided with a protective surface coating comprising a boron nitride base layer and, optionally, an alumina overcoating, and fiber-reinforced ceramic matrix composite products incorporating the protectively-coated fibers, are disclosed. The composites offer significantly improved high temperature strength in combination with low dielectric constant and low dielectric loss characteristics.
Patent EP-0458055-A2 (EP)
Inventor: COHRS REINHARD DIPL-ING
IPC: H03K17/66
Filed: 1991-04-13
Abstract: 2.1 When using bipolar power transistors, switch-on times which deviate from the drive pulses and whose effects are intended to be prevented occur through the result of the storage time of the power transistors, which depends on the temperature, the current and the voltage. 2.2 With the aid of the base-emitter voltage of the power transistors, signal voltages can be generated which permit these deviations to be corrected and/or allow the switch-on times to be matched to the drive pulse widths by means of a delay in the subsequent switching-on pulse. 2.3 In consequence, a quick-reaction, correct regulation of the converter current is possible which permits, for example, a better matched curve shape when alternating currents are being generated.
Patent EP-0461604-A2 (EP)
Inventor: YOSHIDA KUNIHISA
IPC: G02B1/04
Filed: 1991-06-11
Abstract: A material for one-piece intraocular lenses consisting essentially of a copolymer of which main components are methyl methacrylate and at least one (meth)acrylate selected from an alkyl acrylate having a glass transition temperature of higher than 30°C and up to 100°C and a fluoroalkyl (meth)acrylate having a glass transition temperature of higher than 30°C and up to 100°C is disclosed. The material for one-piece intraocular lenses is excellent in cutting-processability, grindability, machinability and suitable flexibility, and can be suitably used for not only one-piece intraocular lenses but also three-piece intraocular lenses.
Patent EP-0472154-A2 (EP)
Inventor: HIROSE TSUGUHIRO
IPC: H04L47/20
Filed: 1991-08-20
Abstract: A traffic control method for controlling the traffic characteristics of fixed-length information units and transmitting the information units through a number of divided systems(4 to 8)in a ATM communication network(1) comprises a step for monitoring the information units to determine whether or not the information units are transmitted according to prescribed traffic characteristics at the inlets of the plurality of divided systems(4 to 8), a step for regulating the information unit which violates the prescribed traffic characteristics at the inlets of the divided systems(4 to 8), a step for monitoring the information units to determine whether or not the information units are transmitted according to prescribed traffic characteristics at the outlets of the plurality of divided systems (4 to 8), and a step for shaping the information unit which violates the prescribed traffic characteristics at the outlets of the divided systems (4 to 8), as well as a system for carrying out the method.
Patent EP-0484787-A2 (EP)
Inventor: KRUPKA UDO DR
IPC: C07K19/00
Filed: 1991-10-28
Abstract: The invention relates to polypeptides for the immunochemical determination of HCV-specific antibodies and HCV antigens and to agents suitable for these methods and to the use thereof. The invention also relates to an immunochemical method for the simultaneous detection and/or for the simultaneous determination of a plurality of different antibody specificities each against different pathogens in a single assay.
Patent EP-0492307-A2 (EP)
Inventor: SAKAI HIROSHI
IPC: H04J3/14
Filed: 1991-12-12
Abstract: In a pulse generator (10) an M sequence (MS1) provided from an M sequence generator (12) is delayed by a shift register (13) by 2² = 4 bits, and the delayed M sequence and the original M sequence are ANDed by an AND circuit (15) to create a test pulse string (TPS) of a mark ratio 1/4, which is supplied to a demultiplexer (18). A clock for operating the M sequence generator is frequency divided by a frequency divider (27) down to 1/4. An M sequence generator in a pulse error measuring device (19) is operated using the frequency-divided clock. An M sequence generated by the M sequence generator is delayed by a shift register (29) by one bit, and the delayed M sequence and the original M sequence are ANDed by an AND circuit (31) to produce a reference pulse string (RPS) of the mark ratio 1/4, which is compared with the output of the demultiplexer in a mismatch detector (23).
Patent EP-0495217-A2 (EP)
Inventor: WARD MORRIS D
IPC: G06F5/16
Filed: 1991-12-17
Abstract: A sequential memory (10) uses interleaved memories (12a-b) with associated output buffers (22a-b) to accomplish high data rates. Data access control circuitry (18) and bank select circuitry (20) control the order in which the memory banks (12a-b) are written to and read from. Output buffer circuits (22a-b) allow a data word to be read instantaneously after it is written to the sequential memory (10).
Patent EP-0442650-A2 (EP)
Inventor: YU MANTLE MAN-HON
IPC: G11B5/596
Filed: 1991-02-05
Abstract: In a data recording disk file, a digital servo control system generates an estimate of the sinusoidal function representative of the dominant component of nonrepeatable runout (NRRO) and derives from this function a NRRO signal to add to the digital control signal to eliminate the NRRO component from the head position error signal (PES). The estimate of the sinusoidal function is made from the measured PES and from predetermined constants representative of known disk file physical parameters. In the preferred embodiment, a new estimate of the sinusoidal function, and accordingly a NRRO signal derived from the newly estimated function, is made during every PES sample time during track following. During track seeking the estimate of the NRRO sinusoidal function is not updated during PES sampling; rather the NRRO signal is derived from the last estimate of the sinusoidal function. With the present invention the effect of NRRO on the PES, such as that caused by drive motor bearing inaccuracies, is essentially cancelled, thereby improving the read/write operations of the disk file.
Patent EP-0456356-A2 (EP)
Inventor: POLISSON CAROL
IPC: C12N9/22
Filed: 1991-04-16
Abstract: The present invention provides a novel Type II restriction endonuclease obtainable from  Pseudomonas alcaligenes . The endonuclease known as PacI, recognizes the following nucleotide sequence and has a cleavage point indicated by the arrows:   
 Also described is a process for obtaining PacI from  P. alcaligenes.
Patent EP-0478278-A2 (EP)
Inventor: KONISHI AKIO
IPC: G11B15/10
Filed: 1991-09-24
Abstract: The invention relates to a loading mechanism which can realizes a miniaturized, light-weight and thin magnetic recording/playback apparatus. A running path of a magnetic tape from a position where the tape leaves out of a rotary head cylinder to a capstan is settled merely with roller posts without any fixed post, whereby a tape running load is considerably decreased. Because the loci of movement of take-up and supply loading boats which are respectively guided along associated loading guides are corresponded to the loci of revolution of drive shafts fixed on loading rings at take-up and supply sides, the loading boats can be driven directly by the drive shafts, whereby an simplified loading mechanism can be achieved.
Patent EP-0485090-A2 (EP)
Inventor: ADAMS CARL A
IPC: G07G1/12
Filed: 1991-10-25
Abstract: A transaction approval system (10) has a transaction limit (30) stored in a terminal (16) where it can be dynamically adjusted to vary the level of risk at the terminal (16) to be closer to the desired level of risk. The terminal (16) stores (28) all transactions occurring over a defined time interval and transmits this data to a central processor (12) for analysis and calculation of the transaction limit (30) which is downloaded to the terminal (16) by the central processor (12). The terminal (16) generates and stores lists of account numbers (44,46) which might be invalid and should provoke an on-line request for authorization. One list (44) is of transactions that exceeded the transactions limit (30) and were refused by the central processor (12). Another list (46) is of off-line approved transactions.
Patent EP-0495465-A2 (EP)
Inventor: ZENG YI - TOWER BUILDING
IPC: G01N33/569
Filed: 1992-01-14
Abstract: An immuno-enzymatic method for the detection of antibodies to a virus under test, a diagnostic kit therefor, new cell lines for use in said method, a method for preparing said cell line for use in antibody detection, and an immuno-enzymatic test strip and kit therefor are described.
Patent EP-0512551-A2 (EP)
Inventor: SCHMOLLA WILFRIED DR
IPC: G02F1/136
Filed: 1992-05-08
Abstract: A liquid crystal display device has a multiplicity of pixels, which are arranged in matrix form on a light-transmitting and insulating substrate and each have at least one assigned field effect transistor (4) with a gate (8), a source (9) and a drain (10) electrode. The source (9) or drain (10) electrodes, on the one hand, and the gate (8) electrodes of the field effect transistors (4), on the other hand, are connected in a uniform fashion in rows or columns to mutually insulated conductor tracks (11, 12). The electrode of each field effect transistor (4) that is not connected to the conductor tracks (11, 12) is routed to a pixel capacitor (5) in each case. In order to avoid, in the case of a short circuit between the gate electrode (8) and the electrode connected to a conductor track (12), a short circuit arising between the criss-crossing conductor tracks (11, 12) and, in consequence, all the pixels in the row and in the column failing, a parallel circuit consisting of a capacitor (6) and a resistor (7) is arranged between the gate electrode (8) and the associated conductor track (11). The effect of the parallel circuit is that the pixel is reliably controlled even during lengthy operation and given inhomogeneous characteristics of the field effect transistors. <IMAGE>
Patent EP-0518228-A2 (EP)
Inventor: FUELLER WALTER
IPC: G02F1/01
Filed: 1992-06-05
Abstract: The invention describes an adjustable optical filter which consists of a plane-parallel filter plate in which certain wavelengths are intensified and other wavelengths extinguished by interference. The filter plate (P) comprises an electrically conducting or semiconducting material which is optically transparent in a certain spectral range. An electrical voltage which causes an electrical current to flow directly through the filter plate and heats it can be applied to the filter plate. <IMAGE>
Patent EP-0522361-A2 (EP)
Inventor: DHONG SANG H
IPC: G11C11/409
Filed: 1992-06-25
Abstract: A sensing circuit for a dynamic random access memory structure is disclosed having first and second bit lines (22A, 22B), one of the bit lines being a reference bit line which is held at a precharge voltage when a sense amplifier (40) in the sensing circuit is latched. The sense amplifier (40) includes first and second nodes (44, 42) and first, second, third and fourth transistor devices, the first and second transistor devices form an N-device cross-coupled pair (43) and the third and fourth transistor devices form a P-device cross-coupled pair (41). The first node (44) is connected to the first bit line (22A) and to the second and fourth transistor devices, and the second node (42) is connected to the first and third transistor devices. A first isolation transistor device (10) is connected to the first bit line (22A) and a second isolation transistor device (12) is connected to the second bit line (22B). A first clock signal line (32) is connected to the first isolation transistor device (10) and a second lock signal line (34) is connected to the second isolation transistor device (12). A first equalization transistor device (20) is connected to the first bit line (22A) and a second equalization transistor device (18) is connected to the second bit line (22B), a voltage signal line having a voltage value V EQ  thereon is connected to the first and second equalization transistor devices (20, 18), and a third clock signal line (24) is connected to the first equalization device (20). A fourth clock signal line (26) is connected to the second equalization transistor device (18). A fifth clock signal line (30) is connected to the first and second N-devices, a sixth clock signal line (28) is connected to the third and fourth P-devices. The first, second, third, fourth and fifth and sixth clock signal lines have clock signals thereon which occur during a time sequence for pre-charging the first and second nodes to a precharge voltage value V EQ .
Patent EP-0528180-A2 (EP)
Inventor: TASKAS ALEXANDROS
IPC: B29C45/53
Filed: 1992-07-16
Abstract: A process for the production of elastic parts from a rubber-like material, which, as an unvulcanised material, is injected via at least one nozzle with the aid of a piston into a mould, in which the material is vulcanised, the feed channel and the nozzle being cleaned by ejection before each fresh injection operation. The process is distinguished by the fact that the ejection of the partially vulcanised material from the nozzle and the feed channel is carried out in a controlled manner, preferably with the aid of a computer, by moving the piston, which presses the rubber material into the mould, forward by a predetermined distance, this distance just being sufficient to build up the pressure in the barrel so that material is only ejected from the nozzle and the feed channel, and no or only little further rubber-like material flows through the nozzle and feed channel and is lost. <IMAGE>