baber/WOPTO huggingface dataset:
Patent EP-0419061-A2 (EP)
Inventor: KODAMA YOSHIHIRO
IPC: H01L21/208
Filed: 1990-08-29
Abstract: This is a new method for pulling a silicon single crystal. When the silicon single crystal is pulled from a quartz crucible which is provided with a rotation rate more than zero, exclusive of zero rpm according to the Czochralski process, a reference rotation rate of the quartz crucible is controlled by a predetermined program. This method is characterized in that a pulse-like increase or decrease in a rotation rate is superimposed to the reference rotation rate and differences in and cycles of the rotation rate are set by the predetermined program.
Patent EP-0420665-A2 (EP)
Inventor: MENO FUMIO
IPC: H03K19/018
Filed: 1990-09-28
Abstract: An output control circuit having first and second switching elements (Q1 and Q13) wherein the second switching element (Q13) is located at the output and receives a signal from the first switching element (Q1) located at the input, in which the rise and fall times of the output (slew rate) can be properly set respectively, because an electric charge control circuit part (13) is provided to charge or discharge the electric charge to a control electrode of the second switching element (Q13) at the rise or fall time of the output, and because each operation of the electric charge control circuit part (13) corresponding to the rise and fall of the output is performed independently of the other.
Patent EP-0427396-A2 (EP)
Inventor: TANIDA KAICHI
IPC: C07C69/675
Filed: 1990-10-08
Abstract: An optically active (3R)- or (3S)-fluorine-containing-3-hydroxybutyric acid ester represented by the formula:
       
 wherein R represents an alkyl group of C₃-C₁₆ and A represents CF₃, CHF₂ of CH₂F, which is useful for synthesis of optically active substances, is prepared with high optical purity by ester exchange reaction between an alcohol represented by the formula: 
ROH 
wherein R is as defined above and optically active (3R)-or (3S)-fluorine-containing-3-hydroxybutyric acid ethyl ester of
       
 in the presence of an ammonium salt of sulfonic acid.
Patent EP-0430641-A2 (EP)
Inventor: SIPINEN ALAN J C O MINNESOTA M
IPC: A61F5/44
Filed: 1990-11-27
Abstract: A disposable diaper can be almost completely degradable when each of its diaper closure tapes has as its backing a polyolefin film containing a chemical prodegradant such as a metal salt together with an unsaturated elastomer such as a block copolymer of styrene and isoprene or butadiene. Preferably, the polyolefin of each of those backings is a copolymer of polypropylene and polyethylene or a blend of crystalline isotactic polypropylene and a compatible ethylene-based polymer.
Patent EP-0442206-A2 (EP)
Inventor: JANNSON TOMASZ P
IPC: G01J3/18
Filed: 1990-12-12
Abstract: A holographic filter comprises a volume hologram (36) recorded with Bragg surfaces (38) for use in spectroscopic and spectral splitting applications. The Bragg planes (38) in the holographic filter can be recorded to satisfy virtually any design constraint imposed upon the filter such as Raman, Lippmann, non-Snellian (slanted), curved, and multiplexed spectral filters. The holographic filter achieves maximal reduction of secondary maxima and sidelobes and obtains large wavelength selectivities, and varied grating constants.
Patent EP-0437158-A2 (EP)
Inventor: EIKILL RICHARD GLENN
IPC: G11C11/406
Filed: 1990-10-17
Abstract: A data processing network includes multiple processing devices, one or more memory cards in main storage, and a shared interface for processor access to main storage. Each of the memory cards includes dynamic random access memory arrays which require a periodic refresh pulse. To provide refresh pulses, each of the memory cards includes a programmable register (88), a counter (84) receiving clock pulses, and a comparator (86). The comparator generates a request pulse each time the output from the pulse counter equals a selected value provided by the register. The register is programmable to controllably adjust the selected value, and thus select the frequency at which refresh request pulses are generated by the comparator. The memory card further includes a buffer for receiving the refresh request pulses and generating a refresh request responsive to each pulse. Responsive to the refresh request, a memory array control circuit (105) either provides a refresh signal to the arrays, or stores the refresh request, depending on whether the arrays are busy with an external request. However, when stored requests accumulate to a predetermined threshold, the external request is interrupted and a refresh signal is provided to the arrays.
Patent EP-0445527-A2 (EP)
Title: Optical waveguide component and method of manufacturing an optical waveguide component
Inventor: SPRINGER JOHANN DR
IPC: G01F1/00
Filed: 1991-02-02
Abstract: In a process for the production of an optical waveguide (optical fibre) component in which a glass substrate is fitted with optical waveguides made from an optical polymer, the surface of the glass substrate is coated with a protective layer and the protective layer is subjected to a photolithographic process in order to produce a line structure at the relevant points at which the optical waveguides are to be arranged. In the line gaps thereby formed in the protective layer, hydrofluoric acid is introduced on to the glass substrate in order to etch out a capillary-like channel, and the resultant channel is filled with the optical polymer. This allows optical waveguides whose cross-section geometry is approximately the same as that of the transmission glass fibres used for light wave propagation to be introduced into waveguide components.
Patent EP-0445763-A2 (EP)
Inventor: HAKOGI HIRONAO
IPC: G02B6/12
Filed: 1991-03-06
Abstract: Operating point trimming methods for an optical waveguide modulator and an optical waveguide switch are disclosed. One operating point trimming method for an optical waveguide modulator (1A) comprises, for example, the step of removing, while monitoring the waveform of an intensity modulated light beam, a portion (5b₁) of either one of a first and a second (5b) electrode such that the intensity modulated waveform takes on a desired waveform. One operating point trimming method for an optical waveguide switch comprises the step of removing a portion of either one of a first and a second electrode while monitoring output light beams.
Patent EP-0455272-A2 (EP)
Inventor: SIOL WERNER DR
IPC: C08J7/046
Filed: 1987-09-22
Abstract: Compatible polyblends (PM) of 2- polymer components consist of A) 0.1-99.9 (wt.)% polymer P1 with min. 20% styrene units (I) and B) 99.9-0.1% polymer P2 with min. 10% cyclohexyl (meth)acrylate units of formula (II) where R1 = H or Me. Polymer compsns. consist of 40-99% PM and 60-1% chemically different polymer P3, which is incompatible with PM, P1 and P2.
Patent EP-0475042-A2 (EP)
Inventor: FURUTANI HIROYUKI
IPC: C08G73/16
Filed: 1991-07-25
Abstract: Thermosetting compounds expressed by the general formulas (IA) and (IB) are disclosed;
     
     (In the formula, Ari, Ar 2  and Ar4 are divalent organic groups, Ar 3  is a monovalent organic group and Ar 1 , Ar 2  , Ar 3  and Ar4 may be the same kind or different kind. m is an integer of 1-30.) The above compounds provide hard substances excellent in workability as well as high in heat resistance and mechanical properties.
Patent EP-0475234-A2 (EP)
Inventor: BASSA ALTAN
IPC: B03B5/62
Filed: 1991-09-02
Abstract: A process and an apparatus for grading particles is disclosed. For this purpose, a dispersion consisting of a liquid and the particles to be graded is produced in a reservoir (2). The dispersion is fed through a tube arrangement (6) in which the flow speed is slower than the settling speed of the particles to be sorted out. The flowing dispersion is then fed through a settling container (6) from which the particles (27) can be removed. <IMAGE>
Patent EP-0485704-A2 (EP)
Inventor: NIELSEN TAB C
IPC: G11B21/08
Filed: 1991-09-10
Abstract: A servosystem for controlling position of a magnetic head relative to a magnetic storage disk in a disk drive includes first and second feedback loops which provide head position error signals. The first feedback loop includes a head position circuit that processes different recorded Gray coded binary expressions that identify the data tracks on the disk during a track seek mode. The second feedback loop includes a head position circuit which, during the seek and track following modes, processes recorded quadrature servo signals that are interleaved with the data tracks.
Patent EP-0440492-A2 (EP)
Inventor: TAKEKOSHI NOBUHIKO C O CANON K
IPC: B41J2/455
Filed: 1991-01-31
Abstract: There is disclosed a recording head (1) having a plurality of arranged recording elements (2), wherein the recording elements (2) are selectively supplied with driving signals and driven by electrical energy thereof. The head includes a dividing unit for dividing a plurality of arranged recording elements (2) into at least two blocks each simultaneously operable and correcting unit for correcting the characteristics of the recording elements (2) in accordance with electrical energy at respective blocks, whereby recording head's life is prolonged and a high quality picture image can be obtained.
Patent EP-0457609-A2 (EP)
Inventor: NISHIJIMA KAZUNORI
IPC: H03G3/30
Filed: 1991-05-17
Abstract: A detector for an automatic gain control amplifier circuit comprising a full wave rectifier circuit (122), a differential circuit (123), a smoothing circuit (127), a variable resistor and a control voltage source (113). The full wave rectifier circuit (122) includes, first, second and third transistors having a common bias voltage applied to the bases thereof. An input signal (V1,V2) is applied to the base of the first transistor (101) and a complementary signal to the base of the third transistor (103). A first current source (111) is connected in common to the emitters of the three transistors. In the differential circuit (123) there are fourth (105) and fifth (106) transistors having bases between which a control voltage from the control voltage source (113) and variable resistor (150) is applied. A current from a second current source (112) is supplied to the fourth and fifth transistors. A first load is connected in common to collectors of the first and fourth transistors and a second load is connected in common to the collectors of the second, third and fifth transistors. First and second outputs are derived from respective first and second loads.
Patent EP-0463816-A2 (EP)
Inventor: SATO MASUJI
IPC: G02F1/139
Filed: 1991-06-21
Abstract: A reflection type liquid crystal apparatus comprising a liquid crystal panel (26) composed of a pair of first and second opposed plates (30,32) for accommodating a liquid crystal (34) therebetween. A reflecting layer (28) is provided in the inner surface of the second plate, and the first plate is transparent. A common electrode (36) is provided in the first plate, and picture electrodes (38) are located in the second plate. A beam splitter (24) is located in front of the liquid crystal panel (26) for supplying polarized light to the first plate and for selectively transmitting polarized light emerging from the liquid crystal panel (24). The liquid crystal (34) comprises a nematic liquid crystal material having a positive birefringence and arranged in a homogeneous orientation with a constant director (n). This arrangement being such that incident polarized light is propagated in the liquid crystal in a double refraction mode with a first birefringence value and the emerging polarized light thereof is substantially transmitted by the second polarizer means (24) when a voltage is not applied to the liquid crystal; and incident polarized light is propagated in the liquid crystal in a double refraction mode with a second birefringence value smaller than the first birefringence value and the emerging polarized light thereof is not substantially transmitted by the second polarizer means (24) when a voltage is applied to the liquid crystal.
Patent EP-0484141-A2 (EP)
Inventor: PASIECZNIK JOHN JR
IPC: G01R1/067
Filed: 1991-10-30
Abstract: A membrane probe (10, 12, 14, 16, 58, 144) for testing integrated circuits (56,138) while still on the wafer upon which they are manufactured includes a flexible visually clear and self planarizing membrane (26) having circuit traces (20) and ground shielding planes (14), terminating resistor (152) and active buffer chips (172) formed thereon. Probe contact pads (36,38) electroplated on areas of the traces, and connector pads (32) plated on the membrane facilitate rapid detachable connection to a test fixture (50). The probe has a configuration, dimension and structure like that of the wafer itself so that automated pick and place equipment (136,142) employed for handling the wafers (138) may also be used to handle the probes (144). An unique test fixture (50) is adapted to receive and detachably secure a selected probe to the fixture. 
     A metal-on-elastomer annulus (88,104) is employed in the test fixture to make electrical contact between contact pads (32) plated on the back side of the membrane probe and a printed circuit board that is used to route signals to the testing equipment.
Patent EP-0490617-A2 (EP)
Inventor: MANABE MASAHIKO TECHNICAL RESE
IPC: C21D8/12
Filed: 1991-12-09
Abstract: A method of producing a non-oriented electromagnetic steel strip by subjecting a low-carbon steel slab to hot-rolling, cold rolling at a small reduction and first annealing. In order to improve magnetic flux density and surface appearance of the product, specific conditions are employed so as to coarsen the crystalline structure to obtain a controlled and moderate crystal grain size after the annealing. The slab is cold-rolled at a rolling reduction of about 5 to 15 % and is subjected to first annealing by heating at a rate of about 3°C/sec or higher and holding the strip for about 5 to 30 seconds at 850°C to the A₃ transformation temperature of the steel, while controlling the crystal grain size to about 100 to 200 µm after first annealing.
Patent EP-0499778-A2 (EP)
Inventor: KAKIMOTO MASAKAZU
IPC: G03B5/06
Filed: 1992-01-11
Abstract: The present invention provides an image processing apparatus capable of forming a sharp image of a detection mark formed in a plane. The image processing apparatus comprises a camera unit (1) comprising a lens system (12) and a photodetecting device (13) inclined at a predetermined angle to the optical axis (L') of the lens system. The camera unit (1) is disposed with the optical axis (L') of the lens system (12) inclined at a predetermined angle to a perpendicular line (L) to the plane including the detection mark so that the difference in length between respective sections of light paths between diametrically opposite portions of the detection mark and the lens system is canceled by the difference in length between respective sections of the same light paths between the lens system and the photodetecting device.
Patent EP-0504747-A2 (EP)
Inventor: FEDERHEN BERND DIPL-ING
IPC: B03B4/00
Filed: 1992-03-13
Abstract: In a method for sifting sand or similar free-flowing material - in particular for dedusting casting sand containing dust - using an airstream, the sand mixed with dust is guided as a stream via the approximately horizontally or slightly inclined surface of a heap of particles which are heavier with respect to the stream and this heap is flowed through by rising air as a transport flow for the dust particles. A device which is suitable for this method has, in a housing (10) on a screen-like intermediate floor (16), a heap (18) with an approximately horizontal or somewhat inclined surface (19) which is penetrated by an air stream (x), the particles of the heap being composed of material which is heavier than the sand bed (36). <IMAGE>
Patent EP-0544055-A2 (EP)
Inventor: TOZAKI AKIHIRO
IPC: H04N9/797
Filed: 1992-06-19
Abstract: Disclosed is a reproducing apparatus which plays a recording medium on which a color video signal is recorded as three channel signals acquired by expanding time axes of one luminance signal and two color difference signals representing the color video signal and combining the expanded luminance signal and the expanded color difference signals in a predetermined format while subjecting the color difference signals to a line-sequential process, and which can clear disturbance on a reproduced image in a short period of time when the mode changes to a normal playback mode from a special playback mode. After the reproduced channel signal is written in a memory, write and read timings at the reading time are monitored while performing reverse conversion to the signal conversion done at the time of producing the channel signal, thereby keeping the phase difference between write and read timing signals constant.
Patent EP-0533083-A2 (EP)
Inventor: BAVELLONI FRANCO
IPC: B23Q16/00
Filed: 1992-09-14
Abstract: The device for positioning a plate-like element on work surfaces includes a pin (2) connected to a pivoting arm (3) which is rotatable by an actuation shaft (6) having keyed thereto a gear (10) which meshes with a rack portion of a stem (16) of a piston (17), in which the pin in its inactive position is arranged to the side of the body (11) of a plate sucker element (1).
Patent EP-0518394-A2 (EP)
Inventor: NAKATANI KAZUO
IPC: F25B9/00
Filed: 1989-12-28
Abstract: The structure is arranged in such a manner that nonazeotropic mixed refrigerant is enclosed therein and the fractioning/separating device (15) is disposed in the low pressure circuit in the main circuit of refrigerating cycle so as to conduct separation operation, the fraction/separation can be conducted at a low pressure in a separation mode. Heat pump apparatus comprising a compressor (11), a condenser (12), a restrictor (13), an evaporator (14) and a fractioning/separating device (15). A reservoir (16) and a heater (17) are disposed below the fractioning/separating device (15), the reservoir (16) having the lower portion connected to the evaporator (14) via a valve (18).
Patent EP-0538881-A2 (EP)
Inventor: SUZUKI MIKIKO
IPC: C08K5/18
Filed: 1992-10-23
Abstract: A curable resin composition containing (A) an oxyalkylene base polymer having at least one silicon atom-containing group to the silicon atom of which a hydroxyl group or a hydrolyzable group is attached and being cross-linked through formation of a siloxane bond, and (B) a compound having at least one carboxyl group and a compound having at least one primary amine group, which composition has a high curing rate and less toxicity.
Patent EP-0542016-A2 (EP)
Inventor: WALTER MARTIN
IPC: G10K15/02
Filed: 1992-10-24
Abstract: Rod-shaped sound transducers in ultrasonic cleaner baths are operated at an optimum frequency of approximately 25 kHz. Although this results in effective emission, there are dead sound zones between the antinodes. These dead sound zones, which conspicuously reduce the cleaning effect, are avoided according to the invention by operating the sound transducer permanently or at intervals, solely or simultaneously with the dominant frequency, at at least one further frequency. <IMAGE>
Patent EP-0544255-A2 (EP)
Inventor: KAJI HIROYUKI
IPC: G06F17/27
Filed: 1992-11-25
Abstract: The document processing method and system in this invention automatizes extraction of source language sentences from figures, which is the pre-processing for figure translation, as well as embedding of translated sentences in drawings, which is the postprocessing in figure translation. The pre-processing consists of recognizing the regions included in a source figure, extracting a sentence from each region, and extracting the topological characteristics of the figure, and the post-processing consists of enlarging shrinking each sentence display region according to the change of the sentence length by translation, and generating a figure which preserves the extracted topological characteristics and includes the enlarged/shrinked sentence display regions. Thus, the system reduces greatly the machine translation cost for documents containing tables, flow charts, etc.
Patent EP-0549958-A2 (EP)
Inventor: FRY RUPERT J
IPC: H01R13/627
Filed: 1992-12-17
Abstract: A female electrical terminal (14) is disclosed for mating with a male electrical terminal (16). The female terminal includes a forward mating end (80,82) for receiving the male terminal along a front-to-rear axis (90) and a rear terminating end (60) for connection to another electrical element. The forward mating end includes two pair of spring contact arms (80,82) each having a dimple (88,92) projecting transversely of the axis for engaging the male terminal. The dimple (88) on one pair of spring contact arms (80) is offset axially of the dimple (92) on the other pair of spring contact arms (82) to reduce the insertion force on the male terminal. Reinforcing ribs (100,102) extend axially on the spring contact arms. The distances between the reinforcing ribs and the dimples on the respective spring contact arms are substantially equal whereby the normal force on the male terminal by each dimple is substantially equal.
Patent EP-0508500-A2 (EP)
Inventor: BAETENS WILLY
IPC: G07F17/32
Filed: 1992-02-03
Abstract: The invention relates to an attraction for a fair which comprises: a) a closed space (1); b) in this space, two tubes arranged vertically, namely an upper tube and a lower tube, which move with respect to one another; c) an electrical contact at the lower end of the lower tube arranged to connect an electric circuit by the use of a coin which lands in the lower tube; d) a distribution wheel (5) which is set in motion when the said electrical circuit (c) is connected and which is arranged to give out an object via a door (10) from the abovementioned space. <IMAGE>
Patent EP-0503924-A2 (EP)
Inventor: TARIAH IBIM BILAYE
IPC: A43B3/12
Filed: 1992-03-11
Abstract: This invention relates to a sole for an orthopaedic cast having an upper and a lower surface and first, second and third regions broadly corresponding respectively to the heel, arch of the foot and ball of the foot of a wearer, characterised in that the lower surface of the third region is provided with two crossed oblique recesses. Preferably the shape of the sole, and location of the first and second recesses are such that the sole is substantially congruent with its mirror image. 
     The sole is attached to an orthopaedic cast by means of, inter alia, a strap which passes through one oblique recess, and which is fastened over the top of the cast. In this way, the strap extends from a posterior region of the ball of the wearer's foot on the side corresponding to the small toe to an anterior region thereof on the side corresponding to the big toe.
Patent EP-0510834-A2 (EP)
Inventor: BURKE WILLIAM THEODORE
IPC: G11B27/024
Filed: 1992-04-08
Abstract: A WORM disk stores data in continuation chains. Each chain being arranged as a plurality of groups of contiguous data-storing areas (such as disk sectors, clusters of sectors, tracks and the like). The groups are separated on the disk. Each recorded area in the chain has a forward pointer to a next succeeding area of the chain, whether such succeeding area is in the same chain or in a next chain. A last succeeding one of the groups includes unrecorded allocated area(s) of the chain. To find the end of the chain, only the last area of each successive group is accessed and read until a last area of a last group is accessed with an indication that such last group area is unrecorded. Then the entire last group is scanned to find the last recorded area of the chain.