baber/WOPTO huggingface dataset:
Patent EP-0399715-A2 (EP)
Inventor: SEE BENITO
IPC: C08G63/78
Filed: 1990-05-15
Abstract: A process for preparing polyarylate having a reduced viscosity of from about 0.5 to greater than 1.0 dl/gm comprises the following steps:
     (a) reacting an acid anhydride derived from an aliphatic monocarboxylic acid containing from 2 to 8 carbon atoms with at least one dihydric phenol to form the corresponding diester;   (b) after forming the diester, removing by vacuum distillation the bulk of the residual acid anhydride, then adding acetic acid, then vacuum distilling to bring the anhydride concentration to a level low enough to enable the formation of a polymer having a low color and good thermal stability; and   (c) reacting said diester with at least one aromatic dicarboxylic acid at a temperature sufficient to form the polyarylate.   
     Polyarylates made by the process are improved in respect of melt stability and low color.
Patent EP-0404375-A2 (EP)
Inventor: NYSTUEN ARNE M
IPC: D06F37/30
Filed: 1990-06-01
Abstract: A permanent split capacitor motor and a drive system for an automatic washer including the motor for rotating an agitator in the automatic washer. A control circuit (106,108,116,118,120,122,124) operates the motor (32) in first and second directions. The motor has two stator windings (104,106) with a turns ratio of approximately 1.0 and a low inertia rotor. The stator bore to outside stator diameter is preferably 0.43.
Patent EP-0404423-A2 (EP)
Inventor: LAMPORT LESLIE B
IPC: H04L12/56
Filed: 1990-06-12
Abstract: A mesh connected local area network provides automatic packet switching and routing between host computers coupled to the network. The network has a multiplicity of cut-through, nonblocking .switches, each capable of simultaneously routing a multiplicity of data packets. Low host-to-host latency is achieved through the use of cut-through switches with separate internal buffers for each packet being routed. The switches are interconnected with one another and are coupled to the host computers of the network by point to point full duplex links. While each switch can be coupled to ten or more network members, i.e., switches and hosts, each link is coupled to only two network members and is dedicated to carrying signals therebetween. Whenever a new switch or link is added to the network, and whenever a switch or link fails, the switches in the network automatically reconfigure the network by recomputing the set of legal paths through the network.
Patent EP-0409405-A2 (EP)
Inventor: TAYLOR IRA NELSON JR
IPC: G21C3/60
Filed: 1990-06-18
Abstract: A method of inhibiting deleterious reactions between metallic fissionable fuel (12) for nuclear reactors and stainless steel containers (14) for housing such fuel comprising imposing an expendable body (18¹) of alloying metal intermediate the fuel and container is disclosed. The disclosure also includes an improved nuclear fuel element (10) comprising metal alloy fuel (12) housed within stainless steel containers (14) having a body of zirconium metal (18¹) interposed between the fuel and containers.
Patent EP-0406013-A2 (EP)
Inventor: WASSERMAN DAVID
IPC: A61F2/30
Filed: 1990-06-29
Abstract: An absorbable mesh material useful as a dental implant. The mesh is cut by lasers to afford smooth edges which will not unravel. The implant may be attached by a ligature or suture material, generally formed from the same material as the implant, and attached to the implant by, among other things, laser or ultrasonic welding or interweaving.
Patent EP-0407156-A2 (EP)
Title: Circuit module
Inventor: OKADA ISAO
IPC: H05K5/00
Filed: 1990-07-03
Abstract: A circuit module includes one or a plurality of semiconductor parts (32-45, 122), a substrate (31, 121) having the semiconductor parts mounted thereon, and terminals (58, 128) arranged on an outer periphery of the substrate along a plurality of sides of said substrate. The circuit module is connected to a board of a computer by plugging the terminals into corresponding terminal holes, so that the terminals are used in common for providing electrical connection and mechanical connection with the board of the computer.
Patent EP-0408368-A2 (EP)
Inventor: KONISHI HARUO C O SEIKO INSTRU
IPC: G11C5/14
Filed: 1990-07-12
Abstract: A semi-conductor non-volatile memory device has a voltage booster and a supply voltage detection circuit (1, 2, 3, 10, 11) arranged to be operative only when the voltage booster is operated to detect a power supply voltage which is applied to the voltage booster and which is boosted thereby to power a non-volatile memory device.
Patent EP-0416886-A2 (EP)
Inventor: UCHIYAMA SEIJI
IPC: H04N1/40
Filed: 1990-09-05
Abstract: The present invention is structured in such a manner that, when multivalued pixel data which constitutes a multivalued image is supplied, a predetermined number of interpolated pixel data is generated and inserted between the supplied and successive pixels. At this time, the gradient of each of the interpolated pixel is calculated and determined in accordance with the gradient of the supplied neighboring multivalued pixels. Thus, the image is recorded on a recording medium in accordance with image data including the interpolated pixel. As a result, print information processed so as to be printed by a low resolution printer can be printed with the size maintained and high quality exhibited when printed by the high resolution printer according to the present invention.
Patent EP-0448010-A2 (EP)
Inventor: FRANZ REINHARD
IPC: G10H1/12
Filed: 1991-03-18
Abstract: An electronic musical instrument has a main processor with an associated memory storing digitally sampled signals representing the musical sounds. Coupled to the system bus, modules generate the sounds associated with different instruments. Each generation module (8) has processors (19-22) connected to an interpolation filter (23). Values from the main system memory are digitally interpolated and the higher frequency components attenuated to provide improved sound reproduction.
Patent EP-0454043-A2 (EP)
Inventor: HONDA NORIMASA C O YODOGAWA SE
IPC: C08K5/54
Filed: 1991-04-23
Abstract: A process for preparing a filler-containing PTFE granular powder, which comprises mixing uniformly a PTFE powder having an average particle size of not more than 100 µ m and a (semi-)hydrophilic filler which is surface-treated with an organosilane of the formula:
       
 in a two-phase liquid medium comprising water and a water-insoluble organic liquid having a surface tension of not more than 35 dynes/cm at 25°C. Accordingly to the process, the separation of filler can be avoided, and a colorless molded article can be provided.
Patent EP-0454190-A2 (EP)
Inventor: IMAI MASAHITO
IPC: G01P1/00
Filed: 1987-09-15
Abstract: A semiconductor accelerometer includes a package containing damping liquid. A base is fixedly disposed within the package. A semiconductor plate is disposed within the package and is supported on the base. The semiconductor plate has a movable free end and a deformable diaphragm. A semiconductor strain gauge is associated with the diaphragm and deforms in accordance with deformation of the diaphragm. The base has a first surface opposing the semiconductor plate free end. The first surface of the base has a recess for limiting movement of the semiconductor plate free end. The recess extends to and opens at a second surface of the base which differs from the first surface.
Patent EP-0476348-A2 (EP)
Inventor: STEGMAIER HANS
IPC: B22D27/04
Filed: 1991-08-23
Abstract: The invention relates to a sand mould for the production of aluminium cylinder heads, the said mould having a cavity (3) which is bounded by a pattern plate (2) and is designed to accommodate a core assembly (4). A casting gate (5) and at least one riser (6, 7) are formed in the sand mould (1). To reduce the reject rate and the waste, the riser (6, 7) is designed as a blind hole open towards the cavity and an exothermally reacting material is arranged in the blind hole. <IMAGE>
Patent EP-0490240-A2 (EP)
Inventor: GNADINGER ALFRED P
IPC: H01L27/115
Filed: 1991-12-03
Abstract: Problems arise when connecting the bottom plate of a ferroelectric capacitor to the source of its associated access transistor during the fabrication of an ultra large scale integrated memory circuit. The temperature and ambient of certain steps of the fabrication process adversely affects ohmic properties of the connection. To overcome these problems, an insulative layer is formed between the bottom plate of a ferroelectric capacitor and its associated transistor. The insulative layer separates the source from the bottom electrode, and subsequent high temperature swings during the remainder of the fabrication process do not produce any direct connection between the source and the bottom plate. After the memory circuits have been fabricated on the semiconductor wafer, a voltage is applied across the ferroelectric capacitor and the insulative layer, preferably during a wafer probe. The magnitude of the applied voltage is selected to breakdown the insulative layer, but does not damage the ferroelectric layer. As a result, a good ohmic contact is produced between the bottom plate and the source of its associated transistor.
Patent EP-0495219-A2 (EP)
Inventor: BUERKLE ERWIN DR DIPL-ING
IPC: B29C45/70
Filed: 1991-12-18
Abstract: Laminated moulded objects having a base layer of thermoplastic material and one or more covering layers are produced by a moulding of thermoplastic material first of all being injection-moulded in an injection mould, and subsequently the lower mould half of the injection mould, with the still not solidified moulding located in it, being brought underneath an upper mould half of a compression mould, by which the covering layer is pressed against the upper side of the not yet solidified moulding and is laminated onto the latter. <IMAGE>
Patent EP-0461901-A2 (EP)
Inventor: ALEXANDER WILLIAM
IPC: C09D5/34
Filed: 1991-06-13
Abstract: There is disclosed an article of manufacture (and a method of using same) useful for preventing flow of water therethrough by hydration of a water-swellable clay composition comprising a cohesive mass of a water-swellable clay (12) in essentially non-hydrated form, said water-swellable clay (12) present in an amount of at least 20% by weight of the total composition, and a non-aqueous liquid binder capable of adhering the clay together without substantial hydration of said clay, said composition having a flexible, elongated structural support material (40; 42; 44) embedded in said composition to prevent the composition from being displaced from its intended location in use. Preferably the clay composition is a non-hydrated, bentonite composition including an intimate mixture of bentonite clay with a non-aqueous liquid binder, such as polypropene or polybutene, to form a cohesive, non-hydrated, shapeable bentonite composition, and the composition is adhered to a structural, flexible, support material either within the interior of the composition, or on at least one major outer surface of the composition. In one embodiment of the invention, an elastomer such as partially cross-linked butyl rubber is included in the composition. The elastomer has sufficient resiliency to stretch upon hydration of the bentonite and adds structural integrity to the composition. Additional additives may be included in the formable bentonite composition, such as tackifiers, viscosity modifiers, thickeners, extenders and the like.
Patent EP-0517981-A2 (EP)
Inventor: OJALA WILLIAM K
IPC: F01L1/18
Filed: 1991-10-04
Abstract: A valve train for an overhead camshaft type engine includes a finger follower lever type rocker arm assembly. The lever (28) is of lightweight stamped construction containing a pocket or recess (38) in which is received a precision moulded plastic bearing cup (40). The cup (40) has a smoothly polished bearing surface for slidably receiving an axleless roller (44) that is contained laterally within the insert and is rotated by the engine driven cam (12) located above the roller (44) for pivotally moving the lever (28) to actuate the engine valves. The inclusion of the pocket (38) in the lever (28) assures lubrication of the parts at all times since it will collect and retain lubricant or engine oil during engine operation so that even during a lengthy shutdown, upon restart, the elements will be fully lubricated.
Patent EP-0511461-A2 (EP)
Inventor: SATOU NOBUYASU
IPC: G05B5/01
Filed: 1992-01-30
Abstract: A control apparatus for a mechanical device includes a control element (16) for receiving a reference input signal and supplying an operating signal to the mechanical device, a main feedback element (18) for detecting the control signal and supplying the detected control signal to the control element (16), and an auxiliary feedback element (20) for detecting the operating signal to supplied to the mechanical element and supplying the detected operating signal to the control element (16). The control element (16) produces the operating signal based on the reference input signal, the control signal supplied from the main feedback element, and the operating signal supplied from the auxiliary feedback element in order to regulate the control speed such that the hunting in the control apparatus does not occur.
Patent EP-0514892-A2 (EP)
Inventor: TANAKA KATSUMI
IPC: H01H11/00
Filed: 1992-05-21
Abstract: An electromagnetic relay assembly comprises a casing (9) with a corner opening (11) defined at a corner region between top and side walls (10a - 10e) and delimited by a first open area (11a) in the top wall (10a) and a second open area (11b) in the side wall (10b). The corner opening (11) is closed by a covering (15) with first and second lids (16, 18) covering the first and second open areas (11a, 11b), respectively. A test actuator element (22) is secured to the second lid (18) for driving a contact carrier member when an external pushing force is applied to the second lid (18) and also for driving the contact carrier member when the second lid (18) is further slid by an application of an external pushing force to the first lid (16).
Patent EP-0513864-A2 (EP)
Inventor: SCHWARZE RIGOBERT DIPL-ING
IPC: B21D7/02
Filed: 1987-03-24
Abstract: In a tube bending machine with a bending table which can be swivelled about an axis and has a bending form and a clamping jaw displaceable relative to the latter and is provided with a displaceable feed carriage which has a rotatable clamping sleeve, the bending form and the clamping jaw having mutually associated clamping bodies which are adapted to straight and curved portions, to be clamped, of the tube to be bent, have clamping surfaces and are in each case spatially separated and can be moved into the working position, one clamping body (25) has a clamping surface which has a plurality of different contours (33, 34, 35) of the tube section to be clamped while the clamping surface, associated with it during operation, of the other clamping body (19) has only one clamping surface (30) corresponding to the contour of the tube section to be clamped and hence surrounds the tube section to be clamped fully over an angle of 180 DEG  on the associated side in contact with it. <IMAGE>
Patent EP-0553460-A2 (EP)
Inventor: HEFFNER BRIAN L
IPC: H04B10/18
Filed: 1992-12-12
Abstract: An instrument includes a polarized optical source for producing three sequential predetermined states of polarization of a light beam at each of at least two wavelengths, as well as an optical polarization meter for measuring the polarization of a portion of the light beam at each wavelength transmitted by or reflected from an optical network by splitting it into four beams, passing three of the beams through optical elements, measuring the transmitted intensity of all four beams, and calculating Stokes parameters. The three sequential predetermined states of polarization at each wavelength yield three corresponding Jones input vectors at each wavelength, and the Stokes parameters for the responses of the optical network are converted to three Jones output vectors at each wavelength. A Jones matrix for the optical network to within a complex constant is then computed from the Jones input and output vectors at each wavelength. Polarization mode dispersion in the optical network is determined from these matrices.
Patent EP-0549951-A2 (EP)
Inventor: KLAEFKER WILHELM DIPL-ING
IPC: F23J15/02
Filed: 1992-12-16
Abstract: The smoke gases of modern fuel-heated power stations, which enter into the chimney (1) via the smoke gas duct (3), still contain considerable quantities of particle-shaped harmful substances in spite of filter, desulphurisation, nitrogen-removal and washing installations. These substances are sulphur-containing and cause corrosion damage in the environment of the power station. To remove these particles, there is installed in the foot of the chimney (1) a dynamic separator (10), the rotor (14) and rotor shaft (13) of which stand on the rotor drive (15), the rotor drive (15) hanging in the chimney below an intermediate ceiling (6). In this manner, the rotor drive (15) is protected to the greatest extent possible from the aggressive smoke gases. The entire separator cross-section is available to the smoke gases, their flow resistance is practically not increased. <IMAGE>
Patent EP-0533218-A2 (EP)
Inventor: QUATAERT MARIA PETRUS
IPC: A01D34/76
Filed: 1992-06-18
Abstract: The invention relates to a mowing machine provided with a frame and with a plurality of mowing means arranged side by side in a row, which are supported by the frame, which mowing means are rotatable about upwardly extending axes of rotation during operation and which are each connected to a pulley (1-5). A driving belt (9) is passed over said pulleys connected to the mowing means, said driving belt also being passed over a pulley (6) arranged near one end of the row of mowing means, which pulley (6) can be driven from a driving source driving the mowing machine during operation. The contact between the driving belt (9) and the pulleys (1-5) connected to the mowing means is arranged in such a manner, that with the same tensile force in the part of the driving belt that is in contact with the pulley in question the driving belt can transmit more power to a pulley connected to a mowing means which is located near the drivable pulley (6) than to a pulley connected to a mowing means which is located further away from the drivable pulley (6).
Patent EP-0510859-A2 (EP)
Inventor: ACARLAR MUVAFFAK SABRI
IPC: H04B10/43
Filed: 1992-04-14
Abstract: An optical communication arrangement and method is disclosed which utilizes a combination of leadframe and package molding technology to reduce the complexity of the arrangement. In general, a leadframe (20) is utilized for the placement and connection of the required electronic circuitry (24). An optical device (32) is also coupled to the leadframe, where a subassembly may be used to house the optical device. The electronics and optics are then simultaneously encapsulated in a molded outer package (50) to form the final arrangement. In one embodiment, an optical subassembly incorporating a fiber optic connector receptacle (52) may be utilized, wherein the molded outer package is configured such that the connector receptacle remains exposed. Alternatively, the molded outer package may be configured to include the connector receptacle.
Patent EP-0522835-A2 (EP)
Inventor: VELTMAN MARK
IPC: H04N5/926
Filed: 1992-07-08
Abstract: A video image data decoding apparatus is disclosed which comprises a pair of buffer memories for storing decoded intra coded picture data or forward prediction coded picture data, a switching circuit for causing the decoded intra coded picture data or forward prediction coded picture data to be sequentially stored in the pair of buffer memories, and a generation circuit utilizing picture data stored in one buffer memory of the pair of buffer memories for generating picture data to be stored into another buffer memory and also utilizing picture data stored in one buffer memory for generating picture data to be newly stored into the same buffer memory. 
     The generation circuit performs motion compensation when the same utilizes picture data stored in one buffer memory for generating picture data to be stored into another buffer memory, while the same is forbidden to perform motion compensation within a predetermined range when the same utilizes picture data stored in one buffer memory for generating picture data to be newly stored into the same buffer memory.
Patent EP-0529945-A2 (EP)
Inventor: RAGHAVACHARI PARTHA
IPC: G06F12/06
Filed: 1992-08-20
Abstract: An electronic circuit (10) for controlling and testing up to eight banks (12) of RAMs (14₁ - 14   n   ) includes a controller portion (20) for controlling accessing of the RAM banks to permit read and write operations to be carried out, and for initiating testing of the RAMs as well. The circuit (10) also includes a data path portion (22) for detecting parity errors in the data written to and read from the RAMs as well as for detecting errors which occur during testing initiated by the control portion. An interface portion (24) may also be provided to allow test commands, status information and error data to be communicated to and from the circuit (10) across a four-wire boundary scan bus.
Patent EP-0546863-A2 (EP)
Inventor: CRAFT DAVID JOHN
IPC: H03M7/46
Filed: 1992-12-11
Abstract: The present invention relates to data compression apparatus comprising means (320) for receiving an input string of data words, storage means (330) for storing selected data words, comparison means for comparing the input data words with the stored data words, token generating means (370) for generating tokens representing input data words which are identical to stored data words, and means for combining the tokens with input data words which are not identical with any stored data words to form a compressed string of data words. 
     According to the invention the data compression apparatus is characterised in that the storage means comprises means for storing input data words which are not identical to any stored data words so as to increase the number of stored data words.
Patent EP-0571853-A2 (EP)
Inventor: DONG PING
IPC: H03L7/107
Filed: 1993-05-17
Abstract: The present invention includes a phase-locked loop (PLL) parameter adjusting device (APAD) (100) that automatically adjusts a phase-locked loop as needed. The present invention enables a PLL to provide a faster tracking speed while maintaining minimal possible noise bandwidth. 
     The PLL error signal is first integrated either during successive predetermined time periods or over successive N samples of said phase error signal. The integration signal is then applied to a limiter whose output is representative of the sign of the integration signal. Counting means (104) integrate K sign signals and provide a count value to a threshold unit (106). The threshold unit (106) provides a parameter modification signal to an automatic decision unit (108). This unit (108) provides adjusted parameters to the PLL and adjusts the value of N and/or the predetermined time period in response to said parameter modification signal and according to a predetermined strategy.
Patent EP-0572036-A2 (EP)
Inventor: ISHII HIROTOSHI
IPC: C07C45/34
Filed: 1993-05-28
Abstract: An improved process for preparing carbonyl compounds by oxidizing olefins is disclosed. The process comprises oxidizing an olefin with oxygen or an oxygen containing gas in the presence of a palladium compound or metallic palladium, a polyoxoanion compound and an organic phosphorus compound in a solvent selected from oxygen-containing organic compounds, sulfur-containing organic compounds and nitrogen-containing organic compounds. In this process, precipitating of the palladium component is prevented and the high reaction rate is well maintained through the prolonged reaction period and thus carbonyl compounds can be produced with high efficiency and productivity.