baber/WOPTO huggingface dataset:
Patent EP-0551721-A2 (EP)
Inventor: TAKEUCHI TETSUYA
IPC: H01L33/00
Filed: 1992-11-12
Abstract: A gallium nitride type semiconductor device comprises a silicon substrate, an intermediate layer consisting of a compound containing at least aluminum and nitrogen and formed on the silicon substrate, and a crystal layer of (Ga 1-x Al x ) 1-y In y N (0≦x≦1, 0≦y≦1, excluding the case of x = 1 and y = 0). The aluminum/nitrogen intermediate layer suppresses the occurrence of crystal defects and thus the (Ga 1-x Al x ) 1-y In y N layer has very high crystallization and flatness. In a method of fabrication a silicon single crystal substrate is kept at a temperature of 400 to 1300°C and is held in an atmosphere of a metaloganic compound containing at least aluminum and a nitrogen containing compound to form a thin intermediate layer containing at least aluminum and nitrogen on a part or on the entirety of the surface of the single crystal substrate. At least one layer or multiple layers of a single crystal of (Ga 1-x Al x ) 1-y In y N are then formed on the intermediate layer.
Patent EP-0555604-A2 (EP)
Inventor: HAYASHI TETSUJI
IPC: B21D28/02
Filed: 1992-12-16
Abstract: A turret punch press (1) wherein the upper and lower turrets (21,27) are rotated, and the upper die (17,19) positioned in the processing position is struck by a piston rod (13) (striker element) of a striker device (15) mounted on the lower end of a ram (11) when the ram is lowered by means of a crank shaft (10) (mechanical vertically moving means). The piston rod can be freely moved vertically by a hydraulic cylinder (65) so that the amount of the stroke of the striker element with respect to the upper die is the sum of the amount of the stroke of the ram and the amount of the stroke of the piston rod in the hydraulic cylinder itself. Accordingly, the upper die and the lower die (23,25) come into contact and the processing occurs only when the ram and the piston rod are both at bottom dead center.
Patent EP-0507720-A2 (EP)
Inventor: COSTA CLAVER JORGE
IPC: F16B21/10
Filed: 1992-03-20
Abstract: The device is provided with a male member (1) and a female member (2) respectively fixedly attached to panels (3a,3b); the member (2) comprises a cavity (12) for insertion of an active element (4) of the member (1) and is provided with a stop member (15) for retaining the active element (4) in said first cavity (12); it further comprises a slide member (17) arranged transversely and slidably towards the cavity (12); between the front end of the cavity (12) and the retractable stop member (15) there is located a spring (16). The rear base of the slide member defines an oblique surface (23) and there is a screw (20) which, when forced against the oblique surface (23) causes the slide member (17) to slide towards the cavity (12) and the active element (4) to be held.
Patent EP-0566876-A2 (EP)
Inventor: BERSINER LUTZ DR
IPC: H04Q3/52
Filed: 1993-03-20
Abstract: In an optical switching network for optionally connecting inputs to outputs, inputs of a number of matrix arrangements being connected to outputs of input switches via a first permutation network and outputs of the matrix arrangements being connected to inputs of output switches via a second permutation network, the input switches in each case exhibit a number of inputs which form the inputs of the switching network. The output switches in each case exhibit a number of outputs forming the outputs of the switching network. <IMAGE>
Patent EP-0572991-A2 (EP)
Title: A method of processing prepaid telephone calls
Inventor: FROMER SHMUEL
IPC: G07F7/00
Filed: 1993-06-02
Abstract: A method of processing prepaid telephone calls from ordinary telephone sets using secret code numbers marked on cards available for purchasing by the public, thus replacing the coin/magnetic-cards/credit-cards based system.
Patent EP-0590360-A2 (EP)
Inventor: EVAIN ERIC J
IPC: B01J31/12
Filed: 1993-09-07
Abstract: Disclosed is a process for the preparation of aryl-substituted propionic acid esters having the formula:
     wherein R and R 1  are a C 1 -C 12  linear or branched alkyl, a C 5 -C 12  cycloalkyl, a C 6 -C 12  aryl or a C 7 -C 12  alkaryl or aralkyl, R 2  is hydrogen or a C 1 -C 20  linear or branched alkyl and R 3  is a C 1 -C 20  linear or branched alkyl, a C s -C 12  cycloalkyl, a C 6 -C 12  aryl or a C 7 -C 20  alkaryl or aralkyl, and may be the same or different, or R 1  is hydrogen, which comprises forming a reaction mixture of a phenol, at least one base catalyst and an acrylate, in the presence of 1,2-dimethoxybenzene, wherein the acrylate is added at once or over a period of time from 5 to 60 minutes at atmospheric pressure. The process results in excellent yields of the desired product with good rates of conversion.
Patent EP-0637757-A2 (EP)
Inventor: NISHIMOTO IKUO
IPC: G01S7/4914
Filed: 1993-10-26
Abstract: In the photoelectric conversion method and apparatus applicable to displacement sensors irradiating light to objects and sensing the distances to the objects, distance-determining type photoelectric sensors etc., the method and apparatus arrange n ( n > 2 ) light-receiving elements in a predetermined direction, and divide each photoelectric current I1, I2,  ...  ,In of each light-receiving element in predetermined ratios k1 to 1-k1, k2 to 1-k2,  ...  ,kn to 1-kn; and lead the divided photoelectric currents to the first and the second photoelectric current output terminal, and control the predetermined ratios k1, k2,  ... , kn in keeping such relationships as k1 > 0.5 > kn and km ≦ kp (p = m - 1; m = 2 to n ), therefore the arbitrary positions on the light-receiving surface can be set in high sensibility, and high speed responsibility can be attained.
Patent EP-0602356-A2 (EP)
Inventor: KENKNIGHT BRUCE H
IPC: A61N1/05
Filed: 1993-10-27
Abstract: Body-implantable leads with open, unbacked (uninsulated) electrode structures having electrical discharge surfaces formed by conductive elements, such as mesh and braid, and preferably coils. The electrode structures can be classified by pattern: (1) loops, (2) linear arrays and (3) radial arrays. The electrodes are located on or near the epicardial surface of the right and left heart.
Patent EP-0604988-A2 (EP)
Inventor: MORADI-ARAGHI AHMAD
IPC: C09K8/512
Filed: 1993-12-28
Abstract: A gelling composition and a process for wellbore treatment comprising injecting the composition into reservoirs are disclosed wherein the composition comprise a produced brine; a water-soluble polymer such as, for example, polyacrylamide; a crosslinker such as, for example, a complexed zirconium compound; and optionally a complexing ligand such as, for example, lactic acid.
Patent EP-0605925-A2 (EP)
Inventor: MARINUS ANTONIUS ADRIANUS M C
IPC: H02M3/335
Filed: 1993-12-24
Abstract: Switched-mode power supplies in which a series arrangement of a bipolar transistor and a MOS field effect transistor is used are known and referred to as cascode circuits. In these circuits the bipolar transistor is switched (with the MOS field effect transistor)  via  the emitter instead of with the base. Since the collector current of the bipolar transistor may vary over a large range, the base should be proportionally driven to prevent the bipolar transistor from getting either above or below its normal operating range. 
     By making use of an extra winding on a transformer arranged in series with the cascode circuit, a non-dissipative proportional drive of the base of the bipolar transistor is obtained. The extra winding is coupled to the base  via  an inductance.
Patent EP-0561607-A2 (EP)
Inventor: JAHNKE RICHARD W
IPC: C09K23/00
Filed: 1993-03-16
Abstract: This invention relates to a composition comprising a mixture of a brine and a liquid oil, and (A) an emulsifying amount of (i) at least one reaction product of a hydrocarbyl-substituted succinic acylating agent, and at least one of (a) ammonia, (b) an alcohol, or (c) an amine, or at least one salt of the reaction product; or (ii) at least one reaction product of a hydroxyaromatic compound, an aldehyde, and an amine, and (B) at least one surfactant selected from the group consisting of a polyoxyalkylene amine, a polyoxyalkylene amide, a polyoxyalkylene alcohol, a polyoxyalkylene phenol, a polyoxyalkylene ester, a fatty acid salt, an amine or an alkaline earth or transition metal sulfonate, or a reaction product or a hydroxyamine or a polyalkylenepolyamine with an acylating agent selected from the group consisting of a fatty monocarboxylic acylating agents, a dicarboxylic acylating agent other than a succinic acylating agent, and a tricarboxylic acylating agent. The compositions of the present invention have beneficial emulsion and viscosity properties. These compositions are useful in drilling, working and completing well bore holes. The compositions of the present invention have beneficial viscosity, pumping and suspension properties. These compositions are stable. The surfactants of the compositions act as wetting agents for barites and organophilic clays. The surfactants may also act as an emulsifier as well as a wetting agent.
Patent EP-0571069-A2 (EP)
Inventor: WOOD TIMOTHY GRANT
IPC: C09J7/02
Filed: 1993-03-16
Abstract: A process is disclosed for improving the water-whitening resistance of a pressure sensitive adhesive containing an aqueous latex emulsion and water-soluble ions by removing the water-soluble ions and adjusting the pH of the pressure sensitive adhesive formulation to at least about 6.0. The preferred method of removing the water-soluble ions is to contact either the aqueous latex emulsion, the formulated pressure sensitive adhesive containing the aqueous latex emulsion, or both with ion exchange resin. The product produced by the process is also disclosed.
Patent EP-0610648-A2 (EP)
Inventor: SASAKI EISAKU C O NEC CORPORAT
IPC: H04L27/34
Filed: 1994-01-04
Abstract: A multilevel code communication equipment includes a transmission unit and a reception unit. The transmission unit includes a first converting unit, a first encoding unit, a first differential encoding unit, a second encoding unit, a mapping unit, and a modulating unit. The reception unit includes a demodulating unit, a first decoding unit, an inverting unit, a phase shifting unit, a second decoding unit, a differential decoding unit, a decision unit, and a second converting unit. The first converting unit distributes an input serial digital signal to a plurality of levels containing a level 1 indicating a level which is transparent to a 90° phase ambiguity, and a level 2 indicating a level which is transparent to a 180° phase rotation. The second converting unit receives outputs from the inverting unit, the differential decoding unit, and the decision unit, multiplexes the received signals into a serial digital signal, and outputs the serial digital signal.
Patent EP-0614298-A2 (EP)
Inventor: RALL BERNHARD
IPC: H04L25/08
Filed: 1994-02-17
Abstract: For a data communications system, in particular in motor vehicles, with a BUS structure, the insertion of a protective circuit between the data line and the reference potential is proposed which, even if an earth connection is uncoupled in one of a plurality of subscriber devices, maintains communication between the remaining subscribers. The protective circuit is at the same time secure against destruction in the event of a short-circuit. <IMAGE>
Patent EP-0646417-A2 (EP)
Inventor: JOUBRAN RAYMOND
IPC: B05B1/18
Filed: 1994-08-02
Abstract: A multifunction showerhead (20) or hand held showerhead assembly, capable of providing a series of water spray effects. The primary components of the showerhead assembly are a fluid directing valve assembly which includes a pair of generally cup shaped members (70,90) co-axially mounted with opposing end faces proximate to one another. One (90) of the generally cup shaped members has a bottom surface defining a plurality of fluid flow passageways. When the second member (90) is rotated in opposing relationship to the base of the first member (70), the fluid flow passageways direct the fluid flow from an orifice (84) in the first member (70) to a pair of outlet passages, or alternatively to a sealed chamber.
Patent EP-0609969-A2 (EP)
Inventor: KOKER GREGORY T
IPC: H03L7/00
Filed: 1991-06-28
Abstract: The invention relates to a multiple delay line comprising a multiple segment delay line (16) comprising a plurality of delay components (20-50) connected in cascade, each of said delay components producing a respective delay signal (NTAP), wherein said multiple segment delay line receives a periodic signals (PHI1) for delay thereof and wherein the delay provided by each of said delay components is determined by a first control signal (V ref ). A first phase detector receives the periodic signals PHI1) and a plurality of signals (TAP2, TAP9, TAP14) each produced by a different delay component, for determining whether there is any phase error between the produced delayed signals (TAP2, TAP9, TAP14) and the periodic signal (PHI1), and produces at least one second control signal (PD, CD, NPU, NCU) indicative of said phase error. Control signal generating means (18) is provided, responsive to at least one second control signal (PD, CD, NPU, NCU), for producing the first control signal (V ref ). First signal processing means (64, 66, 68, 70) is provided, responsive to signals (A, B, C) produced by a plurality of said delay components, for producing at least one output signal (D, E, F, G) that is a sub-phase of the periodic signal (PHI1).
Patent EP-0630912-A2 (EP)
Inventor: OOURA MAKOTO
IPC: C08F8/12
Filed: 1994-06-23
Abstract: A vinyl acetylsalicylate-vinyl alcohol based copolymer which comprises a structural unit having the following formula (1):
       
and a structural unit having the following formula (2):
       
optionally with at least one member selected from the group consisting of a structural unit having the following formula (3):
       
and a structural unit having the following formula (4):
       
     In the copolymer, the amounts of vinyl acetylsalicylate units and vinyl alcohol units, degree of polymerization and the like can be controlled, whereby the efficacy of acetylsalicylic acid can be easily controlled as desired. Therefore, the copolymer is expected to be widely applicable as medicament.
Patent EP-0639895-A2 (EP)
Inventor: MIZUNO TOMOKO C O SONY CORPORA
IPC: G11B31/00
Filed: 1994-08-17
Abstract: An electronic equipment controlled by a plurality of operation buttons, for example, for reproducing audio signal of a disc player, an audio tape recorder, a tuner, or an amplifier, etc. provides control circuits. A plurality of operation buttons are composed of: basic operation buttons for basic action of the electronic equipment, such as starting or stopping reproducing of the reproducing unit of a recording medium, music selection, and tuner selection and switching volume adjusting operation of an amplifier; additional function buttons associated with basic operation, such as random reproducing of a reproducing unit of a recording medium, adjusting of equalizing characteristic, and switching adjusting operation of tone quality or sound field, etc.. The control circuits are provided in the electronic equipment, and in the normal operation mode, switches overall operation in response to operation of both basic action and additional function buttons. When the simple operation button is operated, the control circuit switches overall operation mode to simple operation mode to switch overall operation in response to basic operation button, and do not accept operation of additional function buttons.
Patent EP-0677967-A2 (EP)
Inventor: NAM HO JUN
IPC: H04L1/00
Filed: 1994-12-21
Abstract: A Viterbi decoder for receiving and decoding a signal transmitted through a channel in a vestigial side band (VSB) transmission system for high definition television (HDTV), which operates at the same speed as a symbol rate, can accomplish a hardware implementation using simplified memory system and a single decoder in order to restore an encoded signal. Since the memory configuration thereof is regular, the memory structure can be extended easily. Also, the present invention can be adopted by extending to 3-bit 8 state or above as well as to 2-bit 4-state by means of a general Viterbi decoding algorithm.
Patent EP-0667222-A2 (EP)
Inventor: SCHAEFER STEFAN
IPC: F16J15/02
Filed: 1995-02-07
Abstract: A sealing strip made of elastomer material produces a clamping effect against thin films, eg. release films, using pairs of shanks (3, 3'; 4, 4') which extend away from both upper (2') and lower (2) faces of the seal profile. The shanks (3, 3'; 4, 4') are inclined inward and the opposing free ends (5, 5'; 6, 6') are separated by a gap (s, s').   A use for the sealing strip is claimed in conjunction with laminating, release of coating films.
Patent EP-0671199-A2 (EP)
Inventor: MIMURA TOMIO C O THE KANSAI EL
IPC: B01D53/77
Filed: 1995-02-23
Abstract: This invention relates to a method for the removal of sulfur oxides and carbon dioxide contained in combustion exhaust gas. More particularly, this invention provides a method for the removal of CO₂ and SO x  contained in combustion exhaust gas which comprises a high-performance desulfurization step for desulfurizing SO x -containing combustion exhaust gas until the SO x  concentration in the desulfurized gas comes within the range of 5 to 10 ppm, and a decarbonation step for bringing the desulfurized gas into contact with an aqueous solution of an alcoholic hydroxyl-containing hindered amine to remove not only CO₂ but also SO x  so that the SO x  concentration in the decarbonated gas is reduced to 1 ppm or less. In one preferred embodiment, the high-performance desulfurization step employed in the above-described method is a flue gas desulfurization step based on the wet lime-gypsum process using first and second absorption towers in which the combustion exhaust gas is brought into contact with a gypsum slurry containing 1% or less of calcium carbonate in the first absorption tower and then brought into contact with a gypsum slurry containing 1% or more of calcium carbonate in the second absorption tower.
Patent EP-0685190-A2 (EP)
Inventor: HURST SIEGFRIED
IPC: A47B13/02
Filed: 1995-04-05
Abstract: The support pad incorporates an annular groove (7) with cylindrical outer wall, in which the support tube (1) fits and a conical inner wall (6) on which a split conical tube section (2) is mounted. The tube section (2) is made from a hard material such as steel while the tube is made from a softer material e.g. aluminium alloy. A disc (5) is mounted on top of the conical tube (2). A number of screws (4), which pass through holes in the bottom of the pad, are used to pull the disc (5) down to force the conical tube into the ID of the tube. <IMAGE>
Patent EP-0687925-A2 (EP)
Inventor: OKANIWA KAORU DR
IPC: G02B6/13
Filed: 1995-05-26
Abstract: A method of forming a polymeric optical coupling waveguide (1) on a principal lightguide (6) including a lightguiding layer (2), which comprises the steps of applying a photopolymerizable monomer or a photocrosslinkable or photopolymerizable polymer or a mixture thereof onto the principal lightguide (6), curing the polymeric optical coupling waveguide (1) by exposure through a mask, and removing the unreacted area of the applied coat with a suitable solvent. 
     Other methods are exposure and solubilizing of a photosolubilizable polymer or photolithographic patterning of the cured polymer. 
     The coupling waveguide may be tapered, with the bigger cross section towards the end face.
Patent EP-0689780-A2 (EP)
Inventor: ISHIHARA KIYOMITSU
IPC: A44B19/36
Filed: 1995-06-07
Abstract: A slide fastener having a split arrester (1) for preventing a pair of interengaged fastener stringers (S) from accidental splitting when a slider is removed. The split arrester (1) comprises interlocking male and female members (10, 20) mounted on a pair of fastener stringers (S) contiguously to the respective terminal portions of opposed coupling element rows and substantially equal in thickness and width of the coupling elements (E). The male member (10) has a locking tongue portion (12) projecting from an attachment base portion (11) toward the female member (20) and terminated in a protuberance (12a). The female member (20) has a locking hollow portion (22) for receiving the locking tongue portion (12) and having a pair of resilient catch portions (22a) for gripping a neck (12b) of the protuberance (12a) from opposite sides in the direction of thickness of the fastener tape (T).
Patent EP-0692894-A2 (EP)
Inventor: TSUMURA SOICHI
IPC: H04L27/22
Filed: 1995-07-14
Abstract: A received signal strength detector detects a received signal strength corresponding to an envelope of a received signal and outputs a received strength signal corresponding to the strength level. A DC component extracting filter extracts a DC component from the received strength signal and outputs an extracted DC component signal corresponding to the level of the DC component. A modulation rate component extracting filter extracts a line spectrum component corresponding to a modulation rate from the received strength signal and outputs an extracted modulation rate component signal corresponding to the level of the modulation rate component. A decision compares the extracted DC component signal and the extracted modulation rate component signal with respective threshold levels set therefor and decides, when the levels of the two signals are higher than the respective threshold levels, that the received signal is an optimum signal. The decision may otherwise be based on comparison of a ratio between the two extracted signals with a threshold level set therefor. An attenuator may be provided on the input side of the received signal strength detector such that it may be controlled, when the decision decides that the received signal is not optimum, so as to lower the gain of the receiver to prevent otherwise possible saturation of the received signal output of the receiver.
Patent EP-0712091-A2 (EP)
Inventor: NISHIGAI HIDEFUMI
IPC: G07D7/10
Filed: 1995-10-20
Abstract: Metal fibers are mixed, at a predetermined mixing ratio, into a document for which forgery should be prevented. In reading a document, microwaves are applied to the document via a transmission antenna and reflected microwaves are received via a reception antenna. The document includes a portion in which the microwave reception level falls within a predetermined range and which portion is longer than a predetermined length, the document is regarded as a forgery preventive document and the copying operation is stopped. Further, a registration guide is so formed as to reflect microwaves at a certain reflectance. Influences of variations due to a temperature change and aging are compensated by measuring a reception level corresponding to the registration guide.
Patent EP-0716167-A2 (EP)
Inventor: TANAKA MOTOYUKI
IPC: H03H3/02
Filed: 1995-12-05
Abstract: A single crystal quartz thin film having a thickness of 5 nm to 50 µm can be prepared by forming the thin film on a single crystal substrate by a sol-gel process and peeling the thin film from the substrate. The present invention can provide the single crystal quartz thin film at a low price without a large and complex apparatus.