baber/WOPTO huggingface dataset:
Patent EP-0421271-A2 (EP)
Inventor: MERGER FRANZ DR
IPC: C07C69/738
Filed: 1990-09-27
Abstract: 3-substituted 2-hydroxy-3-formylpropionic acid esters of the general formula I 
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 in which
 R<1> is a lower alkyl radical and R<2> is a straight-chain or branched alkyl radical containing 1 to 10 carbon atoms. The 2-hydroxy- 3-formylpropionic acid esters of the formula I are obtained by adding an alkanal of the general formula II 
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 and an alkyl glyoxylate of the general formula III 
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 simultaneously to a catalyst system consisting of a salt or a mixture of a secondary amine and a carboxylic acid in such a way that the temperature does not exceed 90 DEG C, preferably 80 DEG C, or alternatively, by adding one of the reactants of the formulae II or III to a mixture consisting of the catalyst system described above and adding the other reactant in such a way that the temperature does not exceed 90 DEG C. From the 2-hydroxy-3-formylpropionic acid esters of the formula I, the corresponding 3-substituted 3-formylacrylic acid esters can be prepared with good yields by treatment with water-eliminating agents, in particular acetic anhydride.
Patent EP-0430242-A2 (EP)
Inventor: RUBIN DANIEL
IPC: H02M1/34
Filed: 1990-11-29
Abstract: An electrical circuit supplying a load from a voltage source includes a switching device and a diode, and is to be protected from recovery current caused by polarity reversal of the diode during the operation of the switching device. The electrical circuit further includes a transformer having an excitation winding sensing the recovery current through the diode immediately after operation of the switching device, and a sink winding coupled to the excitation winding for inducing in the sink winding a reverse current corresponding to the current in the excitation winding. A unidirectional conducting device directs at least a portion of the reverse current from the sink winding back to the voltage source.
Patent EP-0435013-A2 (EP)
Inventor: ELLIS WAYNE F
IPC: G11C11/401
Filed: 1990-11-30
Abstract: A semiconductor packaging assembly (12) is described in which a plurality of modules or chips (1-1...1-n), responsive to a plurality of common input signals, are provided with input signal redriver circuits (14-1...14-n). Each redriver circuit is responsive to an input and provides an output signal to each of chips in the assembly. The preferred embodiment is directed to a multi-module memory arrangement in which input signals including CAS, RAS, W and address signals are received and redriven.
Patent EP-0400849-A2 (EP)
Inventor: ALEXANDRES RICHARD B
IPC: G01R31/36
Filed: 1990-05-18
Abstract: Method and apparatus for measuring the voltage and state of charge of a secondary battery. The voltage and state of charge values are taken by a circuit every four (4) seconds by reading voltage, waiting two (2) seconds, reading current, waiting two (2) seconds, and repeating the voltage readings and the current readings. The circuit includes a 14-bit microprocessor, CMOS analog switches, and two operational amplifiers. The voltage and current readings are taken from dual-sloped converters, and the values determined by software algorithms in the microprocessor.
Patent EP-0410698-A2 (EP)
Inventor: MURATA YUKIO C O NEC CORPORATI
IPC: H04M9/10
Filed: 1990-07-24
Abstract: A hands-free telephone for use on a vehicle and having a handset incorporating a radio section therein and a hands-free adapter incorporating a hands-free telephone unit therein. To eliminate howling, this kind of telephone generally needs two variable attenuators, or variolossers, each for changing the level of respective one of a receive and a transmit signal to be applied to a speaker of a hands-free telephone unit and a radio section, respectively, so as to maintain the two levels in a predetermined relation, and a variable resistor for adjusting the volume of voice to be outputted by the speaker. In the present invention, the variable resistor is implemented by a variable resistor which adjusts the level of a receive signal to be applied to a receiver installed in the radio section. This receive signal is controlled in level by a third variable attenuator simultaneously with the above-mentioned variable attenuators.
Patent EP-0429189-A2 (EP)
Inventor: DOOGAN DECLAN P
IPC: A61K31/135
Filed: 1990-10-29
Abstract: The use of sertraline, or of a pharmaceutically acceptable salt thereof, for the manufacture of a composition for preventing or alleviating anxiety and the symptoms associated with anxiety-related disorders.
Patent EP-0429238-A2 (EP)
Inventor: CRONK BRYON J C O MINNESOTA MI
IPC: C03B37/012
Filed: 1990-11-13
Abstract: A coil (24) of optical fiber (10) can be self-supporting by bearing a layer of brittle thermoplastic adhesive (20) that adheres adjacent convolutions of the fiber (10) together. Because it is self-supporting, the coil needs no hub so that either end of the fiber can be unwound. Preferred thermoplastic adhesives are marketed in the optical industry as blocking waxes.
Patent EP-0444646-A2 (EP)
Inventor: USHITORA AKIHIRO
IPC: E03F5/22
Filed: 1991-02-27
Abstract: A laying structure for a vacuum sewer pipe (1) of a vacuum sewage collecting system for collecting sewage discharged from homes and facilities into a collecting tank (41) through a vacuum sewer pipe (1) kept negative in pressure internally is disclosed. The vacuum sewer pipe (1) includes a portion laid in a plain topography which comprises a downward pitch portion (11) sloped toward downstream, and a short upward pitch portion (12) connected to the downstream end of the downward pitch portion (11) to return a depth of the vacuum sewer pipe (1) to an original level, the downward pitch portion (11) and the upward pitch portion (12) are alternated at least once. The upward pitch portion (12) starts from a spot deepened from the original laying level by a depth corresponding to 0.8 to 1.0 times of a bore of the vacuum sewer pipe. By this arrangement, an air lock is not produced at the upward pitch (12) portion even if the quantity of air flowing in the vacuum sewer pipe (1) is low.
Patent EP-0467078-A2 (EP)
Inventor: BAUGHER BENNETT W
IPC: G01N33/543
Filed: 1991-06-18
Abstract: Assay reagents, devices, methods and kits used in the analysis of low molecular weight analytes which by themselves are too small or unable to bind to two specific binding members at the same time. The invention involves the use of an analyte-substitute reagent (ASR) comprising at least two components, the first of which is identical to or an analog of the analyte to be determined, while the second is an unrelated ligand for which an antibody or other specific binding member can be obtained or produced.
Patent EP-0477564-A2 (EP)
Inventor: KOUNO TAKAO
IPC: F16H61/18
Filed: 1991-08-28
Abstract: An electronic-controlled transmission comprising: a fluid pressure source (22), a select actuator (2) for carring out the select operation of a transmission operating mechanism, a shift actuator (3) for carring out the shift operation of said transmission operating mechanism, a proportional electromagnetic type pressure control valve (21) inserted and connected between said fluid pressure source (22) and said shift actuator (3), and an electronic-control device (5) for selecting transmitting position on basis of signals of an operating amount of accelerator, engine r.p.m. and vehicle speed and controlling a fluid pressure circuit of said actuators, said proportional electromagnetic type pressure control valve (21) is driven by an output of said electronic-control device (5) corresponding to a transmitting position, and a fluid pressure supplied to said shift actuator (3) is controlled corresponding to each transmitting operation.
Patent EP-0476484-A2 (EP)
Inventor: BOEHM HARALD DR NAT DR
IPC: H01M10/613
Filed: 1991-09-10
Abstract: Bei einer Hochenergiebatterie mit einer Vielzahl von Einzelzellen in einem von einem Kühlmedium durchströmten Gehäuse wird vorgeschlagen, das Kühlmedium so zu führen, daß es nur eine oder beide Stirnseiten der Zellen wärmemäßig beeinflußt. <IMAGE>
Patent EP-0483745-A2 (EP)
Inventor: OHTSUBO HIROYASU HITACHI CHIGA
IPC: H04N5/335
Filed: 1991-10-29
Abstract: A video camera in which an output signal from a solid-state image sensor is converted into the corresponding digital signal at the horizontal reading cycle of the output signal, and the digital signal is digital-processed with a first predetermined clock (fs) synchronous with the reading cycle to provide a luminance signal and a color difference signal. This video camera comprises data clock converter means (42) for latching the color difference signals generated on the basis of the first clock with a data latch clock synchronous with a second clock (4 fsc) having the frequency four times as large as that of a color subcarrier (fsc) thereby to convert the clock for the color difference signal; control means (45) for detecting the phase of the changing point of the color difference signal generated on the basis of the first clock (fs) for the second clock (4 fsc) to provide a phase detecting signal and supplying said data latch clock with which the color difference signal is latched synchronously with said second clock (4 fsc) at a stable point after the changing point of the color difference signal generated on the basis of the first clock (fs); phase correction means (43) for receiving the color difference signal after data clock conversion from said data clock converter means, and producing a phase-corrected color difference signal by selecting in accordance with said phase detecting signal from the control means (45) either one of the color difference signal having an intermediate phase obtained by interpolating the signals before and after the changing point of the received color difference signal and said color difference signal after data clock conversion; and modulation means (44) for quadrature-balanced-modulating the color difference signal supplied from said phase correction means (43) to provide a modulated color signal.
Patent EP-0444794-A2 (EP)
Inventor: COX STEVEN WAYNE
IPC: G06F11/22
Filed: 1991-02-12
Abstract: A diagnostic system checks the major hardware components in a pattern control system used in a textile dyeing apparatus. The system includes bypass logic circuitry which permits selective bypassing of either the look-up tables, stagger memories, or both the look-up tables and the stagger memories in the pattern control system. The diagnostic system checks the look-up tables in the pattern control system to assure that the address lines for the look-up tables operate properly. A prime number pattern is loaded into the look-up tables such that each address location for each look-up table will have a different piece of data. The look-up tables are then read in address sequence and the output thereof compared with a previously stored prime number pattern to determine whether any errors arose. The system further checks the firing times produced by the gatling memory section of the pattern control system by simulating a machine speedup and checking for the onset of machine optimum speed and machine overspeed.
Patent EP-0446067-A2 (EP)
Inventor: YUTORI TOSHIAKI
IPC: G01R1/067
Filed: 1991-03-08
Abstract: An inspection probe which allows a plurality of such inspection probes to be arranged at a remarkably reduced pitch. The inspection probe comprises a very thin metal wire having a diameter of 120 µm or less and so shaped as to have self resiliency, and a plated noble metal layer formed on a surface of the very thin wire. A probe pin head for the inspection of an electronic circuit board is constructed employing a plurality of such inspection probes. The inspection probes are secured to or embedded in a base made of a resin material. A process of producing the probe pin head is also disclosed.
Patent EP-0450778-A2 (EP)
Inventor: DAVIES JOHN
IPC: B05C5/00
Filed: 1991-03-14
Abstract: A device applying a two-component composition to a workpiece surface comprises an applicator head (384) to which the two components are supplied separately via tubes (726, 382) arranged one inside the other. The applicator head includes a ball member (392) over the surface of which the components supplied via the tubes can flow and be applied to the workpiece surface, substantially unmixed at the point of application. The applicator head (384) supports a rotary brush assembly (398) which, when its annular operating surface portion is pressed against the workpiece surface, serves both to mix the substantially still separate components on the workpiece surface and to spread the thus formed adhesive composition over the workpiece surface. A gravity-fed system (T, RV1, RV2) is provided for supplying a first component and a pressurised feed system (P, R, RV3, RV4) for supplying a second component respectively to first and second bellows units (756, 744) from which said quantities are then fed separately at a controlled rate to the point of application (380). For metering the two components the bellows units are caused to increase or decrease in volume at a controlled rate, such that the component flow rate therefrom is constant throughout their operation. A control device for controlling the bellows units includes a pivotal lever (762) to which each unit is connected by an articulated linkage (760, 778).
Patent EP-0458603-A2 (EP)
Inventor: BAKER RONALD W
IPC: G03G15/09
Filed: 1991-05-21
Abstract: A rubber developer roller having a quaternary ammonium material as an antistatic agent to achieve an approximately one order of magnitude increase in the level of conductivity. This provides consistent printing over a range of temperatures of operation, particularly at start-up when the printer has not reached its designed operating temperature, and over a range of environmental conditions. This roller also permits the increase of print speed.
Patent EP-0516905-A2 (EP)
Inventor: BOEHM THIERRY
IPC: D04B1/24
Filed: 1991-09-24
Abstract: A circular knit one-piece garment blank (10), brief, and method of making the same has a seamless body section (14) and a double ply crotch (16) integrally intermitted therewith in the form of a turned welt. The depending portion of the two ply crotch is sewn to the body section.
Patent EP-0506005-A2 (EP)
Inventor: NAKATSUKASA EIJI
IPC: G01G19/18
Filed: 1992-03-25
Abstract: To solve the problem that the prior device has a difficulty in performing accurate measurement of weight or dimension of a work which is placed in a furnace, the invention provides a device for measuring the physical state of the work under high temperature conditions such as a sintering furnace, which comprises: a frame for holding a work; a base on which the frame is placed; a probe having an end portion disposed for relative movement between the work and the frame; a step motor for driving the probe so that the end portion of the probe moves between the work and the frame and also lifts the frame together with the work away from the base; a microcomputer which acts together with a magnetic scale and a load cell to send a control signal to the step motor,thereby detecting a displacement of the probe and a load imposed on the probe.
Patent EP-0507236-A2 (EP)
Inventor: OYAMA TAKUJI
IPC: G02B1/10
Filed: 1992-03-30
Abstract: A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 µm formed on the substrate, and an underlying layer formed at the boundary between the substrate and the film, wherein the underlying layer is an absorbing layer with an extinction coefficient k being not 0.
Patent EP-0520391-A2 (EP)
Inventor: MAEMOTO SHUNICHI
IPC: C07C45/85
Filed: 1992-06-24
Abstract: The present invention discloses a separating and purifying (4R, 6R)-4-hydroxy-2,2,6-trimethyl cyclohexanone comprising the steps of:
     reacting a diastereomer mixture of (4R, 6R)-4-hydroxy-2,2,6-trimethyl cyclohexanone represented by the formula (I)
     and (4S, 6R)-4-hydroxy-2,2,6-trimethyl cyclohexanone represented by the formula (II)
     with a reagent which reacts with the hydroxyl groups at least equimolar to the compound represented by the formula (II) to thereby convert the compound represented by the formula (II) into a (4S, 6R)-4-hydroxy-2,2,6-trimethyl cyclohexanone derivative represented by the formula (III)
     (where R represents a group modifying the hydroxyl group) by predominantly modifying the hydroxyl group in the formula (II), and   separating the compound of the formula (I) from the compound of the formula (III) through the difference of the solubility in water or an organic solvent. According to the invention, (4R, 6R)-4-hydroxy-2,2,6-trimethyl cyclohexanone is easily separated with a high yield.
Patent EP-0520512-A2 (EP)
Inventor: GEENS RUDY EMIEL AMELIA
IPC: H01J61/22
Filed: 1992-06-28
Abstract: A high pressure sodium lamp having a fill within an elongated arc tube comprising an inert starting gas, mercury and sodium wherein said mercury and sodium being are in an amount less than two milligrams per cubic centimeter of said volume of the interior of the arc tube wherein the weight ratio of sodium to mercury is less than 1 to 20 whereby the lamp is saturated with sodium and unsaturated with mercury at said predetermined nominal output voltage and does not extinguish at an input voltage exceeding about 90 percent of said rated voltage.
Patent EP-0511691-A2 (EP)
Inventor: BARD STEVEN L
IPC: H01L21/48
Filed: 1989-07-03
Abstract: Polyimide is etched by contacting the polyimide with an aqueous solution of a metal hydroxide followed by contact with an acid followed by contact with an aqueous solution of a metal hydroxide. Etching of chemically cured polyimide can be enhanced by employing a presoaking in hot water. Also, partially etched chemically cured polyimide is removed with a concentrated acid solution. 
     In preparing a metal coated polyimide structure for subsequent gold plating, two flash etching steps with the polyimide etch between are employed after developing the photoresist.
Patent EP-0529359-A2 (EP)
Inventor: WEIS BERND X DR
IPC: H04M1/72
Filed: 1992-08-05
Abstract: A private branch exchange (WPABX) with integrated mobile section for controlling cordless terminals (HS) which can be operated via base stations (BS) is to be implemented. For this purpose, the private branch exchange (WPABX) exhibits freely configurable interface modules (I/F) for wire-connected terminals (DE) and for wireless terminals (HS) which can be operated via a base station (BS). To provide control, a central processor (PABX-CPU) is provided for all switching and user facility control tasks and a subordinate processor (mobile CPU) is provided for connection set-up/release control for the cordless terminals (HS) in accordance with an associated set of call numbers. The processors (PABX-CPU, mobile CPU) and the interface modules (I/F) are connected to one another via a bus system (BUS).
Patent EP-0529515-A2 (EP)
Inventor: HIRATA HIDETOSHI
IPC: G11B23/087
Filed: 1992-08-20
Abstract: A magnetic tape cassette includes a leaf spring and magnetic tape reels in which the depression force of the leaf spring is varied such that, in assembling the cassette, the leaf spring provides a relatively weak depression force thereby to facilitate cassette assembly, and when the cassette is in use, the leaf spring provides a relatively strong depression force to sufficiently depress the magnetic tape reels. The magnetic tape cassette also includes a pair of protrusions formed on the inner surface of the top wall of an upper half casing which can abut the arms of a leaf spring secured to the upper half casing, so that, in assembling the cassette, the leaf spring is bent until it is brought into contact with the protrusions. When the cassette is in use, the leaf spring is further bent with the protrusions serving as fulcra, thereby to increase its force of depression.
Patent EP-0541072-A2 (EP)
Inventor: KOTANI TOMOYUKI
IPC: G11B5/738
Filed: 1992-11-04
Abstract: A laminated polyester film for a magnetic recording medium having at least three layers, in which each of a top layer and a bottom layer of the at least three layers contains inorganic particles having a Moh's hardness of at least 8 and an average particle size of 0.005 to 0.5 µm in an amount of 0.25 to 5 % by weight based on the weight of the polyester of the respective layer and, in total, not larger than 0.20 % by weight based on the whole weight of the polyesters of all the layers including an intermediate layer, and exposed surfaces of the top and bottom layers have coefficients of friction and surface roughness which satisfy which satisfy the specific conditions.
Patent EP-0542128-A2 (EP)
Inventor: GROSS MARTIN
IPC: H05B3/74
Filed: 1992-11-05
Abstract: A radiant heating element (11) is arranged under a glass ceramic panel (12). Arranged on its insulating support (14) is a heating conductor (18a, 18b) which consists of a plurality of individual wires (19) which are threaded into one another as a fabric or mesh, preferably as a hose mesh, and are connected in parallel. The heating conductor has a low ratio between mass and rated power, of less than 7 x 10<-3> g/W. <IMAGE>
Patent EP-0508739-A2 (EP)
Inventor: KOJIMA TAKAO
IPC: G01L23/10
Filed: 1992-04-08
Abstract: A device for detecting a change in internal pressure of a cylinder includes a cylinder head (P), an ignition plug (T) threadingly fitted into a plug insertion hole (r1) of the cylinder head (P). An annular piezoelectric sensor (S) is secured in the plug insertion hole (r1) by screwing the plug (T) into the insertion hole (r1). The sensor (S) has such an outer periphery that, when the ignition plug (T) is screwed into the plug hole (r1), a part of the outer periphery of the sensor (S) placed is brought into engagement with an inside periphery of the plug hole (r1) and is thereby prevented from being further rotated in the screwing direction. By using a gasket (40) having the same relative shape to the periphery of the plug insertion hole (r1) as that of the above sensor (S), rotation of the sensor (S) can be prevented even when the sensor (S) does not have such a relative shape.
Patent EP-0510895-A2 (EP)
Inventor: KURODA RYO
IPC: G11B9/14
Filed: 1992-04-21
Abstract: The processor comprises a plurality of probes (104) disposed so as to face to a recording medium (107) containing an information, and a plurality of elastic members such as cantilevers (101) supporting the respective probes. The processor reads the information by detecting each displacement of the elastic members. For the detection of displacement, the processor has an optical system for radiating a scanning light beam to the elastic members together with an optical system for detecting a reflected light from the elastic members, or alternatively has a means for detecting each displacement individually such as optically integrated optical members (208) or piezoelectric layers (408) provided to the elastic members.
Patent EP-0518487-A2 (EP)
Inventor: WADE JOHN ROBERT
IPC: G03F7/033
Filed: 1992-05-13
Abstract: A radiation sensitive material comprises particles including a water-insoluble heat-softenable core surrounded by a shell which is soluble or swellable in aqueous medium. The material also includes a radiation sensitive component which, on exposure to radiation, causes the solubility characteristics of the material to change. The material may be positive- or negative-working and may be coated onto a substrate from aqueous media to form a radiation sensitive plate which, after image-wise exposure, can be developed in aqueous media and then heated to cause the particles to coalesce and form a durable printing image.