baber/WOPTO huggingface dataset:
Patent EP-0418705-A2 (EP)
Inventor: EISELE HARTMUT DR
IPC: H01S5/00
Filed: 1990-09-11
Abstract: An interferometric semiconductor laser having a GaAs/GaAlAs heterostructure is known. Such a semiconductor laser is constructed using the principle of the Michelson or Mach-Zehnder interferometer and, compared with a laser having a Fabry-Pérot resonator, offers the advantage of better side mode suppression of the laser light. 
<??>The invention provides a semiconductor laser having a controllable beam splitter (5). Three segments (1, 2, 3) with laser-active zones and a monitor diode (4) form a crossed laser and are connected to one another via the beam splitter (5). The beam splitter (5) has either a holographic grating or a partially transparent mirror which has been produced by step etching. The beam splitter has electrodes for controlling the optical coupling between the segments (1, 2, 3) by current injection. The laser-active zones are formed by distributed waveguide lasers, broad-area lasers or multi-quantum-well layers. 
<??>Particularly advantageous is a semiconductor laser having two beam splitters and three monitor diodes for controlling the phase, the power and the filter wavelength of the emitted laser light. Such semiconductor lasers are suitable for optical telecommunication transmission. 
<IMAGE>
Patent EP-0422542-A2 (EP)
Inventor: HALE STEVEN EDWARD
IPC: B65B9/02
Filed: 1990-10-06
Abstract: A method and apparatus for encapsulating a porous article (10) in plastic film without employing supporting molds. The article is deposited onto a lower web (15) and an upper web (26) is moved into overlying position. The edges of the webs are gripped by moving teeth (18) to move the webs and the article in unison. The webs are then pinched together adjacent the article to form an enclosed volume. The film is heated to its fusing temperature and the enclosed volume is evacuated through a tube (40) inserted through the lower web (15) and into the article (10). The tube is removed and the fused webs are trimmed adjacent the edges of the article, resulting in an encapsulated article (10a).
Patent EP-0430061-A2 (EP)
Inventor: VIESSMANN HANS DR
IPC: F24H1/28
Filed: 1990-11-22
Abstract: The boiler consists of a water-bearing housing (3) with, arranged in the upper part, an essentially horizontally oriented combustion chamber (1), from which heating gas flues (4) are conducted to a waste gas and condensate collecting chamber (20) with waste gas connection pipe pieces (24), which is arranged at the bottom on the housing, the heating gas flues (4) and their mouths being connected to the combustion chamber (1) in the region distant from the burner. In order both to simplify such a boiler, which is in particular intended for operation as a condensate boiler, with regard to manufacturing technology, but also in particular to ensure optimum flow conditions both on the firing side and on the water side in the transition region from the upper part to the lower part, the housing part (2) containing the combustion chamber (1) and thus the combustion chamber (1) itself and the housing part (6) of the water-bearing housing (3) containing the heating gas flues (4) are joined together in a common bevel-cut plane (7), in which a correspondingly inclined plate (9) with heating gas flue openings, which forms the burner-distant bottom (8) of the combustion chamber (1) is arranged. To this plate (9), the heating gas flue ends (4') are connected in a liquidproof manner, and furthermore the water-bearing inner spaces (2', 6') of the two housing parts (2, 6) are interconnected. <IMAGE>
Patent EP-0405653-A2 (EP)
Inventor: FRATTA ANTONINO DR ING
IPC: H02M5/45
Filed: 1990-06-19
Abstract: The inverter is supplied by a dc source (E) and converts dc potential to a polyphase alternating voltage used to supply an inductive load such as an electric motor (ME). An active rail voltage control circuit (C, D, SW+, SW-) is connected between the supply and the inverter to limit the maximum voltage on one hand and assist with commutation by lowering supply voltage on the other.
Patent EP-0383485-A2 (EP)
Inventor: FIELD JOHN RODNEY
IPC: C10F5/00
Filed: 1990-02-08
Abstract: A process for the removal of water from a wet material comprising combustible organic solids to form a solid autothermally combustible fuel comprises the steps of contacting the material with a dewatering liquid comprising a water-immiscible solvent and dissolved water-in-oil emulsifier and then extracting a water-in-oil emulsion from the mixture wherein the wet material is preferably pre-treated with an absorbent material comprising a water swellable polymer to effect preliminary drying of the wet material.
Patent EP-0389196-A2 (EP)
Inventor: GENT JOHN ARTHUR GOOCH
IPC: A01G33/02
Filed: 1990-03-16
Abstract: A cord, thread or filament is treated by applying to it a dilute solution of a polysiloxane prepolymer which is then cured, such that either (a) as in Figure 4 the outer envelope of the cord, thread or filament (20) is enrobed (19), or (b) in the case of a cord or thread, as seen in Figure 3, the filaments (14) thereof are substantially individually encapsulated by, a coating (17) of cured polysiloxane polymer. The treated cords, threads and filaments (15, 18) have inter alia improved abrasion and fray resistance, water repellance and slip qualities.
Patent EP-0432897-A2 (EP)
Inventor: ROBINSON THOMAS C
IPC: A61M60/39
Filed: 1990-11-13
Abstract: Blood is pumped by a pump (24), preferably a biconcave diaphragm pump. When the blood pump is full of blood, this full condition is detected and a batch of blood is emptied completely from the pump for delivery to the patient. A second pump (68), also preferably a bi-concave diaphragm pump, pumps anticoagulant into the blood as it is recovered. This second pump ejects its contents every time the blood pump ejects its contents. Particulates in the blood are removed by a filter (20) and air is removed by a defoamer (12). Fluid and very small matter in the blood may be removed in a tangential flow separator (36). Blood flows through a narrow passage (50) along one or more membranes (38,40), with fluid and small matter passing through the membrane(s). A washing fluid (60) may be added to blood within this separator. A third pump (62), again preferably a bi-concave diaphragm pump, is used to add this washing fluid. The third pump is emptied whenever the blood pump empties, and thereafter refills with washing fluid.
Patent EP-0441042-A2 (EP)
Inventor: GRAVENER ROY D
IPC: F27D7/06
Filed: 1990-12-14
Abstract: A method for supporting a piece which is to undergo a treatment process comprising embedding the piece in a particulate support medium, enclosing the support medium in a container, and pressurizing the support medium by applying pressure to the outside of the container or by applying a vacuum to the interior of the container. Various treatment processes may be employed, such as annealing.
Patent EP-0450270-A2 (EP)
Inventor: VAN RIESEN REINER
IPC: B60R22/30
Filed: 1991-01-24
Abstract: The quick-acting adjuster (1) for adjusting the belt length of, for example, a belt restraint system consists of a housing (15) having a U-shaped bottom plate (4) arranged in this and with a recess (6) forming a web (7) for fastening one belt part (2), a top plate (9) guided displaceably between the legs of the bottom plate (4) and having a web (11) round which a further belt part (3) can be looped, and a pushbutton (12) which is arranged in the housing (15) and which is in engagement with the top plate (9) by means of spring force and, when actuated, displaces the latter relative to the bottom plate (4). The pushbutton (12) and the return spring (20) constitute a one-piece constructional part which consists of a viscoplastic. <IMAGE>
Patent EP-0445768-A2 (EP)
Inventor: SUZUKI SHINICHI
IPC: G03G5/06
Filed: 1991-03-06
Abstract: A photoconductive material comprising a mixed crystal of a combination of at least two quinacridone compounds represented by formula (I):
       
 wherein R₁, R₂, R₃, R₄, R₅, R₆, R₇, R₈, R₉, and R₁₀ each represents a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an alkyl group, an alkoxy group, an amino group, a sulfo group, a carboxyl group, an alkylamino group, or a halogenated alkyl group, 
and an electrophotographic photoreceptor using said mixed crystal as a carrier generating material are disclosed. The photoconductive material has high sensitivity in the visible light region, and the electrophotographic photoreceptor exhibits stability to heat or light as well as high sensitivity.
Patent EP-0457029-A2 (EP)
Inventor: WATANABE MASARU
IPC: G11B5/842
Filed: 1991-04-11
Abstract: A coating apparatus for magnetic recording mediums used as magnetic tapes and floppy disks, capable of forming two layers by simultaneous coating on a support continuously traveling. The apparatus comprises a die having three lips and two slits. The lips and slits are herein successively numbered as first to third lips (1, 2, 3) and first and second slits (4, 5), respectively, in the order from the upstream to the downstream. The surfaces of the lips (2, 3) at the downstream side of said slits (4, 5) being curved to have arcs in their cross-sectional shapes at their tips, wherein; 
   when the edge of a second lip (2) on the side of a first slit (4) is represented by A, the edge of the second lip (2) on the side of a second slit (5) is represented by B, the edge of a third lip (3) on the side of the second slit (5) is represented by C, the edge of the third lip (3) on the reverse side of the second slit (5) is represented by D, and the angle formed by a tangent line X at B and a tangent line Y at C is represented by ϑ, 0 ≦ ϑ ≦ 5°; the length of an arc AB in the direction of support travel and the length of an arc CD in the direction of support travel are 3 mm ≦ AB ≦ 7 mm and 3 mm ≦ CD ≦ 7 mm; when the curvature radius of the curved surface of the second lip (2) is represented by R1 and the curvature radius of the curved surface of the third lip (3) is represented by R2, 4 mm ≦ R1 ≦ 20 mm and 4 mm ≦ R2 ≦ 20 mm; and the second slit (5) has a gap length of from 0.1 mm to 0.3 mm. 
     The apparatus can uniformly and stably form a smooth coating surface even when the upper layer is a thin layer of 0.2 to 0.8 µm in coating thickness.
Patent EP-0453908-A2 (EP)
Inventor: LEE ERNEST DEWITT
IPC: G01N30/58
Filed: 1991-04-12
Abstract: The isotopes of zirconium can be partially or completely separated by loading an aqueous solution of an ionic compound of zirconium onto a cationic exchange resin which serves as the stationary phase of a chromatograph, eluting the compound with an aqueous acid and collecting distinct elution volumes representative of each isotope. In a preferred embodiment, the eluent is a strong mineral acid, such as hydrochloric acid and the chromatograph is of a type, such as a continuous annular chromatograph that it can be operated in a continuous, steady state manner.
Patent EP-0454138-A2 (EP)
Inventor: BROWN NEIL DR
IPC: C04B41/45
Filed: 1991-04-25
Abstract: The invention relates to processes for producing ceramic composite powders and novel composite powder materials, in particular to processes for producing ceramic composite powders, in which finely divided dispersions of metal oxides and/or non-oxidic ceramic powders are coated with alumina in the form of boehmite. Such powders are particularly suitable for producing structural and electrical ceramics with minimum defects. The processes comprise the steps of adding an organic complexing agent to an aqueous acidic aluminium-containing solution, raising the pH of the solution, adding a fixed quantity of powder particles to the solution to form a suspension, raising the temperature of the suspension and subsequently separating off the particles coated with boehmite.
Patent EP-0474257-A2 (EP)
Inventor: SAKAI TOSHIYUKI
IPC: G06F17/27
Filed: 1986-12-29
Abstract: A typewriter having a function of automatically spell-checking by comparing each word entered with a multiplicity of words stored in a dictionary memory and having a temporary word dictionary memory containing words which would otherwise be found to be incorrect but which are to be ignored.
Patent EP-0475458-A2 (EP)
Inventor: GOSS DAVID C
IPC: H05B3/14
Filed: 1988-01-16
Abstract: A parallel, zoned electrical heating cable, wherein first and second electrical conductor means are spaced from each other along the length of the cable being connected to electrical heating means. Individual dielectric means conducting heat from said heating means are arranged for improved thermal distribution of heat. Dielectric heat conducting means is positioned adjacent heating means and between the conductor means.
Patent EP-0482673-A2 (EP)
Inventor: KAKII TOSHIAKI
IPC: G02B6/38
Filed: 1987-11-13
Abstract: An optical connector comprises an optical fibre connector ferrule which comprises a substrate plate having at least one optical fibre groove and pin grooves each being formed at one surface thereof, and a cover plate joined to the substrate plate to form at least one optical fibre groove holes into which an optical fibre is inserted; a guide pin means to be inserted into the pin grooves for coupling the optical fibre connector ferrule with another; and means for absorbing the variation in the diameter of the guide pins means.
Patent EP-0459567-A2 (EP)
Inventor: HARDING GEOFFREY DR
IPC: H01J35/02
Filed: 1991-05-22
Abstract: The invention relates to a source for generating essentially monochromatic X-ray radiation, having an anode for generating X-ray radiation, a target, which is surrounded by the anode, for converting the X-ray radiation into fluorescent radiation, and having a screen, which is located between the target and the anode, for screening the target from electrons. In this case, a higher yield of fluorescent radiation is achieved by the screen containing an element having a high atomic number.
Patent EP-0447134-A2 (EP)
Inventor: LUCAS TIMOTHY S
IPC: F25B49/02
Filed: 1991-03-08
Abstract: A compressor for vapor-compression cooling systems, which exploits the properties of acoustic resonance in fluids for fluid compression, and provides a discharge pressure which can be varied during operation in response to changing operating conditions, thereby providing an oil-less compressor and reducing the compressor's energy consumption. The thermoacoustic properties of standing acoustic waves are exploited to provide a refrigerant subcooling system which is contained within the compressor. Refrigerant subcooling occurs when heat exchange is provided between the refrigerant and a heat pumping surface, which is exposed to the standing acoustic wave within the compressor. Acoustic energy can be provided by either a mechanical driver, or by direct exposure of the fluid to microwave and infrared energy, including solar energy. Inlets (4) and outlets (6) arranged along the chamber (2) provide for the intake and discharge of a fluid refrigerant, and can be provided with optional reed valve arrangements, so as to increase the compressor's compression ratio. The performance of the compressor can be optimised by a control circuit which holds the wavelength of the standing wave constant, by varying the driving frequency in response to changing operating conditions.
Patent EP-0461953-A2 (EP)
Inventor: CLERC ALAIN
IPC: B60R16/02
Filed: 1991-06-04
Abstract: The present invention relates to devices enabling the state of a ground to be analysed from a mobile member moving relative to this ground. The device according to the invention is essentially characterised in that it comprises source means (10) for emitting a beam (11) of electromagnetic-type radiation towards a point (13) on the surface of the ground, reception means (14) capable of receiving a beam (35, 37) of the same type and capable of supplying signals representative of the received beam (35) reflected from the point, means (60) for processing these signals and means (20) for controlling the source means as a function of the speed of movement of the mobile member such that, over at least a portion of this movement, the spot (13) which the beam makes on the ground has a virtually zero speed relative to the ground. Application: monitoring the surface state of a road-traffic highway from a vehicle in order to discriminate between ground which is dry, wet, covered with black ice etc. <IMAGE>
Patent EP-0514805-A2 (EP)
Inventor: GREIG COLIN CAMPBELL
IPC: A24B3/14
Filed: 1992-05-18
Abstract: This invention relates to methods of increasing the viscosity of a dispersion containing an alginate by subjecting the dispersion to high shear, such as the shear in a laboratory valve homogeniser. The viscosity of the dispersion increases within the range of two fold to five hundred fold. 
     The method of increasing viscosity is useful in tobacco reconstitution or tobacco substitut processes, especially where either low levels of binder are required or improved taste characteristics over cellulosic binders, for example, are important.
Patent EP-0517219-A2 (EP)
Inventor: TONEL VALERIO
IPC: A43B7/12
Filed: 1992-06-04
Abstract: A waterproof device (1), for boots (2) having a shell (3) and/or a quarter which have a first (5) and a second (6) overlapping flaps. The device is constituted by an insert (8) arranged at a seat (7) defined on the first flap of the shell and/or of the quarter. The insert has containment seats (13,14) for respective levers and a tab (12) which can be sealingly interposed between the first flap and the second flap.
Patent EP-0524571-A2 (EP)
Inventor: MAGGIONI ROBERTO
IPC: B65G27/08
Filed: 1992-07-20
Abstract: The multiple-channel vibrating feeding table includes a table (1) provided with a plurality of mutually adjacent troughs which define the channels for conveying loose parts, motor elements (10,17,18) for vibrating the table, and elements (20-22,25-27) for connecting each of the troughs to the motor elements, the connecting elements being individually actuatable in order to vibrate only selected trough or troughs.
Patent EP-0536627-A2 (EP)
Inventor: ELMER WERNER
IPC: H03K19/018
Filed: 1992-09-29
Abstract: A bus driver circuit for applying a binary signal to a bus line comprises an input transistor (Q₁) for receiving the signal to be applied to the bus line and an output transistor (Q₂) which taps the signal from the emitter of the input transistor and furnishes its output signal at its collector via a Schottky diode (D₁). Between the base and the collector of the output transistor (Q₂) the collector-emitter path of a transistor (Q₃) is inserted, to the base of which a reference voltage (U ref ) for defining the low value (L) of the binary signal to be applied to the bus line is applied via a Schottky diode (D₃).
Patent EP-0497506-A2 (EP)
Inventor: LUDWIG EDWARD GARLAND JR
IPC: G09F13/04
Filed: 1992-01-23
Abstract: A novel light diffusing resin (material) has been invented which combines excellent light diffusing properties with high light transmission. The combination of properties is possible because the material does not significantly backscatter light. Also, the material exhibits good contact clarity. This light diffusing material is an excellent choice for use in blankout signs. A non-reflecting translucent white sheet [1] is placed behind a transparent bronze overlay [1]. The message [3] is seen only when the sign is illuminated.
Patent EP-0512706-A2 (EP)
Inventor: BOARDMAN MARK DAVID
IPC: B60W30/18
Filed: 1992-04-21
Abstract: A fault sensing and tolerant logic (Figure 6) is provided for a control system/method for an automated mechanical transmission system (12) including a throttle dip override device (34).
Patent EP-0516306-A2 (EP)
Inventor: PAYNE JEWEL M
IPC: A01N63/23
Filed: 1992-05-12
Abstract: The subject invention concerns novel microbes and genes encoding novel toxin proteins with activity against insect pests of the order Hymenoptera. Pests in the order Hymenoptera are common house pests, and they create problems in hospitals, the food industry and in agriculture. The novel  Bacillus thuringiensis  microbes of the invention are referred to as  B.t.  PS140E2,  B.t.  PS86Q3, and  B.t.  PS211B2. The spores or crystals of these microbes, or mutants thereof, are useful to control hymenopteran pests in various environments. The genes of the invention can be used to transform various hosts wherein the novel toxic proteins can be expressed.
Patent EP-0571992-A2 (EP)
Inventor: OKUNUKI KAZUMICHI
IPC: H04R17/00
Filed: 1993-05-26
Abstract: An ultrasonic transducer assembly (20) comprises a transducer unit (26, 68) having an array transducer (28) composed of a plurality of transducer elements (28A) for transmitting and receiving ultrasonic waves to effect electronic scannig, and a casing (21) for housing the transducer unit (26, 68) therein. The casing (21) has a contact surface (24A) to be brought into contact with an object to be examined (14), and in the casing (21) there is disposed a swing mechanism for swinging or pivoting the transducer unit (26, 68) with respect to a virtual rotative axis (32) which is determined on an electronic scanning plane produced by the array transducer and in the vicinity of the contact portion (24A) of the casing (21). The swing mechanism includes a pair of guide members (34L, 34R) formed with arc-shaped guide routes concentrically arranged with the virtual rotative axis as its center, a linking mechanism (36L, 40, 41, 42, 36R, 43, 44, 45) for linking the transducer unit (26, 68) with the guide members (34L, 34R) in such a way that the transducer unit (26, 68) can be pivoted or swung along the arc-shaped guide routes of the guide members (34L, 34R) with respect to the virtual rotative axis (32); and a driving mechanism (48, 50, 52) for reciprocatingly moving the transducer unit (26, 68) along the arc-shaped guide routes of the guide members (34L 34R). In this ultrasonic transducer assembly, a three-dimensional echo data acquiring region can be produced based on the shift of the electronic scanning plane with the virtual rotative axis (32) as its center by the swinging mechanism. The virtual rotative axis (32) is located in the vicinity of the contact surface (24A) of the casing (21). Therefore, when the contact surface (24A) of the transducer assembly (20) is brought into contact with the body surface between the ribs (100) of a patient to be examined (14), it is possible to acquire three-dimensional echo data through the space between the ribs (100), without being subject to the influence of the presence of the ribs (100).
Patent EP-0574938-A2 (EP)
Inventor: NAGASHIMA NORIAKI
IPC: G06F7/04
Filed: 1993-06-18
Abstract: An input coded signal is compared with a predetermined coded signal to generate a non-coincidence signal. Error bits of the non-coincidence signal are changed to correct bit by a predetermined number of bits. When the non-coincidence signal has no longer any error bit as a result of changing the error bits to the correct bits, the input coded signal is determined to be correct.
Patent EP-0594134-A2 (EP)
Inventor: PFAFF DIETER
IPC: G01N33/72
Filed: 1993-10-19
Abstract: Calibrators used in the photometric determination of bilirubin are inorganic solids, in particular yellow glass. <IMAGE>
Patent EP-0564252-A2 (EP)
Inventor: MATSUBARA MIYUKI
IPC: H04N1/50
Filed: 1993-03-30
Abstract: A plurality of recording heads for ejecting inks of different colors are reciprocally moved relative to a recording medium, and printing operations are performed by executing main scans in forward and backward scans of the recording heads. In this case, an area printable in a single main scan is recorded by performing a plurality of main scans using a plurality of thinning patterns in which an m x n pixel group is defined as a unit pixel group, and the pixel groups are arranged at non-neighboring positions, and which have a complementary arrangement relationship therebetween. A high-quality color image free from time difference nonuniformity, and density nonuniformity caused by, e.g., variations of recording elements is obtained at high speed.