baber/WOPTO huggingface dataset:
Patent EP-0397131-A2 (EP)
Inventor: OHBA TAKAYUKI C O FUJITSU LIMI
IPC: H01L21/768
Filed: 1990-05-09
Abstract: A method of forming a contact in a semiconductor device involving cleaning the surface of a substrate exposed in a contact hole, formed for example through an SiO₂ film on the substrate, using the reducing effect of a nitrogen hydride or nitrogen hydride derivative gas, for example N₂H₄ gas. Thereafter, for example, a TiN barrier may be formed by a CVD method using a mixed gas of N₂H₄ and TiCl₄ (the surface not being exposed to air) and then a tungsten contact layer formed thereon by a CVD method using a mixed gas of N₂H₄ and WF₆. Alternatively, a TiN layer may be formed by a CVD method on a tungsten contact layer formed by a CVD method direct on the substrate.
Patent EP-0401558-A2 (EP)
Inventor: MEISSNER ECKHARD DIPL-ING
IPC: H04B10/532
Filed: 1990-05-15
Abstract: 2.1 For DPSK-modulated or ASK-modulated transmission signals, a simple method to achieve phase-insensitive and/or polarisation- insensitive optical heterodyne reception for such a signal is specified, using an intermediate frequency which is very low in comparison with a data rate of these signals. …<??>2.2 For this purpose, for each clock cycle of the transmission signal (S), the phase of this signal (S) is sampled at the start (A1) and in the centre (M) of the clock period (T) of this clock cycle between 0 DEG  or 90 DEG  and/or the polarisation of this signal (S) is sampled at least at the start (A2) of the second and at the start (A4) of the fourth quadrant of this clock period (T). The transmission signal (S), sampled in this manner, is received by a simple optical heterodyne receiver (ÜE) which has the special feature that an intermediate frequency filter (ZFF) is an integrator which integrates in each case over a quadrant of the clock period (T). The method can also be carried out in two different variations of the method. …<??>2.3 Optical heterodyne reception …<IMAGE>…
Patent EP-0399417-A2 (EP)
Title: Preparation of stearidonic acid
Inventor: LAGARDE MICHEL
IPC: C11C1/00
Filed: 1990-05-19
Abstract: To prepare stearidonic acid from a mixture of fatty acids originating from the saponification of a lipid containing it, reversed-phase high performance liquid chromatography is used, choosing the composition of the eluent and the concentration of fatty acids in the solutions injected into the column. A reinjection of the enriched fraction obtained leads to 98 % pure stearidonic acid. 
<??>Stearidonic acid participates in the manufacture of pharmaceutical compositions for combating cardiovascular and thromboembolic diseases associated with platelet aggregation.
Patent EP-0402935-A2 (EP)
Inventor: KURANO YOSHITO C O MITSUI PETR
IPC: C07C213/02
Filed: 1990-06-15
Abstract: There is disclosed an improvement in the production of an N-alkylaminophenol which comprises: the reaction of a divalent phenol with an alkylamine to provide a reaction mixture and recovering the N-alkylaminophenol from the reaction mixture, the improvement comprising:
     (a) adding an aqueous solution of an acid to the reaction mixture to provide a two-phase mixture composed of an aqueous phase which contains a water soluble acid salt of the resultant N-alkylaminophenol and an organic phase which contains an unreacted divalent phenol;   (b) separating the unreacted divalent phenol as an organic solution by extraction of the two-phase mixture with an organic solvent, to leave an aqueous solution;   (c) neutralizing the water soluble acid salt of N-alkylaminophenol in the aqueous solution with an aqueous solution of an alkali to provide an oily phase of N-­alkylaminophenol; and   (d) separating the oily phase and distilling it to recover the N-alkylaminophenol.   
     A further improvement is disclosed which comprises:
     (a) adding an aqueous solution of an alkali to the reaction mixture after the reaction to provide a two-phase mixture composed of an aqueous phase which contains a water soluble alkali salt of the unreacted divalent phenol and an organic phase which contains the resultant N-alkylamino­phenol;   (b) separating the N-alkylaminophenol from the two-­phase mixture by extraction with an organic solvent as an organic solution; and   (c) distilling the organic solution to recover the N-alkylaminophenol.
Patent EP-0423441-A2 (EP)
Inventor: KLOTZ ARTHUR
IPC: E05C19/14
Filed: 1990-07-25
Abstract: A toggle-type fastener for the releasable connection of two constructional parts is proposed. This toggle-type fastener is anchored to a first constructional part 10 and is hooked into a second constructional part 11. For anchoring in the first constructional part, there is a bearing element 18 which is pushed under spring prestress into tabs 17 of the first constructional part. This bearing element has a resilient region which generates the clamping forces for the connection of the two constructional parts 10, 11. 
<??>The fastener shackle 20 which hooks into the second constructional part is connected to the bearing element 18 via an intermediate joint 19 and is preferably a plastic injection moulding. 
<IMAGE>
Patent EP-0418879-A2 (EP)
Inventor: RUSSELL JAMES T
IPC: G11B7/12
Filed: 1990-09-19
Abstract: Apparatus and method are disclosed for encoding information and recording same as sets of variably spaced related marks (12) on an optical record (10). The encoded information is read by illuminating each set of such recorded marks with a coherent read light (25) to cause an optical interference pattern (14) consisting of a varying distribution of amplitude maxima separated by amplitude nulls (or minimas) that change in accordance with the encoded information. This read interference pattern is detected by photosensing diode arrays and after (26) decoding, the system outputs an information signal representing the original information.
Patent EP-0431290-A2 (EP)
Inventor: DHONG SANG HOO
IPC: H01L27/06
Filed: 1990-10-20
Abstract: Circuitry for implementing a gate enhanced lateral transistor (3l) to provide a circuit having a bipolar current driving capability and an FET channel voltage drop. The circuits provide switching of the lateral transistor by enabling both gate and base connections. The device is merged into an FET providing essentially no voltage drop across the collector-emitter connections permitting the collector to reach a full power supply voltage.
Patent EP-0429029-A2 (EP)
Title: Verfahren zur Herstellung einer Brustprothese
Inventor: DEGLER PETER DIPL-ING FH
IPC: A61F2/52
Filed: 1990-11-17
Abstract: Es wird ein Verfahren zur Herstellung einer Brustprothese mit einer dem Körper zugewandten schalenförmigen Vertiefung beschrieben, wobei eine zwischen zwei thermoplastischen Folien eingeschlossene, gelartig erhärtbare Kunstharzmasse geformt und in einer erwärmten, eine Matrize und eine Patrize enthaltende Form ausgehärtet wird; das Verfahren ist dadurch gekennzeichnet, daß man die dem Körper abgewandte, gespannte erste Folie (18) auf die Matrize (10) legt, erwärmt und durch Tiefziehen dauerhaft den Konturen der Matrize anpaßt; die tiefgezogene Folie aus der Matrize entfernt; in die Matrize einen Einlagekörper (26) einsetzt, dessen Volumen (V1) und freie Fläche dem Volumen und der Fläche der dem Körper zugewandten schalenförmigen Vertiefung entsprechen; die tiefgezogene Folie an den Einlagekörper in der Matrize anlegt; die Matrize bis zum Rand mit der Kunstharzmasse füllt, die Kunstharzmasse mit einer zweiten Folie (30) (Deckfolie) abdeckt und über den gesamten Rand (16) mit der ersten Folie verschweißt; den Einlagekörper entfernt; die zweite Folie mit Hilfe einer Patrize, deren Form der Form der dem Körper zugewandten schalenförmigen Vertiefung entspricht, dauerhaft den Konturen der Patrize anpaßt und die Kunstharzmasse aushärtet. <IMAGE>
Patent EP-0437704-A2 (EP)
Inventor: HAYASHI NARIYUKI C O IDEMITSU
IPC: C30B25/14
Filed: 1990-11-23
Abstract: Disclosed is a process for synthesizing high quality diamond, at high speed, in a gas phase using carbon monoxide and hydrogen gas as starting gases, which comprises adding an oxygen-containing inorganic gas such as CO₂ under conditions where graphite is produced unless the oxygen-containing inorganic gas is added. Also, disclosed is a process for consecutively synthesizing diamond on a plurality of substrates, which comprises placing a plurality of substrates (6) in a pre-chamber (4), moving each of the substrates into a reaction section (2), synthesizing diamond on the substrate, and then returning the substrate with a diamond film formed thereon to the pre-chamber. An apparatus adapted to practice the synthesis process is further disclosed.
Patent EP-0381338-A2 (EP)
Inventor: HARADA YASUHIRO
IPC: H01L21/22
Filed: 1990-01-18
Abstract: Product wafers (1a), dummy wafers (1b) and monitor wafers (1c) are loaded from respective cassettes (7) into a boat (2), in which the wafers are in a predetermined arrangement, in a vertical chemical vapour deposition diffusion apparatus by transferring the product wafers (1a) in batches of five, the dummy wafers (1b) in batches of five or less and the monitor wafers (1c) individually. The wafers (1) are withdrawn from the cassettes (7) by a wafer chuck (29) which is mounted on a rotatable and vertically movable slide mechanism (28). The cassettes (7) are received in a cassette store (19) which is horizontally movably arranged adjacent a transfer elevator (18) which moves the slide mechanism (28) vertically.
Patent EP-0390544-A2 (EP)
Inventor: HAYASHI MARIKO
IPC: G02F1/1347
Filed: 1990-03-29
Abstract: A double-layered liquid-crystal display apparatus comprises a first liquid-crystal layer (7) for voltage application to electrodes (2a, 2b) for display and a second liquid-crystal layer (8) within any such electrodes. The direction of orientation of the liquid-­crystal molecules in the first liquid-crystal layer (7) that is the nearest to the second liquid-crystal layer (8) is at right angles to that of the liquid-crystal molecules in the second liquid-crystal layer (8) that is the nearest to the first liquid-crystal layer (7). The angle (ϑ₁) of twist of the liquid-crystal molecules in the first liquid-crystal layer (7) and the angle (ϑ₂) of the twist of theliquid-crystal molecules of the second liquid-crystal layer (8) satisfy the relationship: 
ϑ₂ > ϑ₁.
Patent EP-0405734-A2 (EP)
Inventor: KELLY THOMAS P
IPC: E21B33/043
Filed: 1990-05-16
Abstract: An improved subsea tubing hanger (4) having a body with an external shoulder (14) for landing on a seat (12) within a subsea wellhead housing (10) and locking means (22) carried by the hanger to engage the housing to lock the hanger in its landed position. The locking means includes a locking element (22), actuating means (30) for setting the locking element and securing means (16, 18) for holding the actuating means in its locked position but being releasable responsive to sufficient upward force to sever the securing means. The improved running tool (T) includes a body with hydraulic actuated latching means (62, 92, 112, 116) for engaging the tubing hanger and which maintains its engagement with the tubing hanger even when hydraulic pressure is lost. The actuating means includes an area exposed to hydrostatic riser pressure with sufficient area to retain the actuating means in latched position even though the remainder of the actuating means is exposed to well bore hydrostatic head urging it out of latched position.
Patent EP-0421651-A2 (EP)
Inventor: SCOTT JEFFREY WILLIAM
IPC: H03H19/00
Filed: 1990-09-25
Abstract: A combined finite impulse response filter and digital-to-analog converter for converting sigma-delta over-sampled data into analog form. The filter removes out-­of-band noise energy from the reconstructed analog signal resuting from the sigma-­delta encoding process. The filter/converter is implemented in switched-capacitor technology. Further, a method of designing the optimum number of taps and the tap weight coefficients of the filter is given.
Patent EP-0434212-A2 (EP)
Inventor: LEE NICHOLAS A C O MINNESOTA M
IPC: G02B6/38
Filed: 1990-11-16
Abstract: An optical fiber connector (10) can be easily and quickly assembled by mounting the end of an optical fiber (18) in a thermoplastic adhesive (20) that is heated to a viscosity of between 1000 and 10,000 cp, has an Adhesion-to-Glass Value of at least 10N, and a Shore D hardness of at least 60 at 20°C. The optical fiber connector (10) lends itself to mass-production techniques and can be reused by heating to liquify the thermoplastic adhesive.
Patent EP-0435443-A2 (EP)
Inventor: UENO RYUJI
IPC: C07C405/00
Filed: 1990-11-21
Abstract: A use of 15-keto-prostaglandin compound for the manufacture of a medicament for improving encephalic action.
Patent EP-0435453-A2 (EP)
Inventor: ACKERMAN DAVID ALAN
IPC: H01S5/0625
Filed: 1990-11-23
Abstract: A hybrid laser arrangement is disclosed which is capable of providing an essentially uniform FM response and a relatively narrow linewidth signal, suitable for FM applications. The uniform FM response is obtained by inducing inhomogeneous linewidth inhancement through control of the bias currents (I f ,I b ) applied to separate gain sections (14,16) of a two-electrode Fabry-Perot device. Coupling of the two-electrode device to a narrowband resonant optical reflector (20) provides for an extremely narrow signal linewidth.
Patent EP-0425427-A2 (EP)
Inventor: SCHIMMEL GUENTHER DR
IPC: B01J2/22
Filed: 1990-10-08
Abstract: In order to prepare amorphous sodium silicates having a water content of 0.3 to 6% by weight and an SiO2 to Na2O molar ratio of (1.9 to 2.8):1 from a water glass solution containing at least 20% by weight of solid, the water glass solution is obtained by reaction of silica sand with sodium hydroxide solution in an SiO2 to Na2O molar ratio of (2.0 to 2.8):1 at temperatures of 180 to 240 DEG C and pressures of 10 to 30 bar. This water glass solution is treated in a spray-drying zone with hot air of 200 to 300 DEG C at a residence time of 10 to 20 s and a temperature of the waste gas leaving the spray-drying zone of 90 to 130 DEG C with formation of a pulverulent amorphous sodium silicate having a water content (determined as loss on ignition at 700 DEG C) of 15 to 23% by weight and a bulk density of more than 300 g/l. The pulverulent sodium silicate is placed in a tilted rotary kiln equipped with means for moving solids and treated therein counter-currently with flue gas at temperatures of 250 to up to 500 DEG C for 1 to 60 minutes. The rotary kiln is insulated here in such a manner that the temperature of its outer wall is less than 60 DEG C. Finally, the amorphous sodium silicate leaving the rotary kiln is comminuted by means of a mechanical crusher to particle sizes of 0.1 to 12 mm.
Patent EP-0444561-A2 (EP)
Inventor: DEGER ARNO DR
IPC: G01N33/563
Filed: 1991-02-25
Abstract: Method for the immunological determination of a ligand, in which the ligand to be determined is reacted with   a) at least 2 molecules of a substance P2 which is capable of specific binding, with at least one of these molecules carrying a label, and b) a receptor R which consists of a binding partner P1 which is capable of monovalent binding with P2, and of a binding site R1 for the ligand to be determined, and then the label is determined, and a reagent for the immunological determination of a ligand, which contains a substance P2 which is capable of specific binding and is at least partially in labelled form, and a receptor R which consists of a binding partner P1 which is capable of monovalent binding with P2 and of a binding site R1 for the ligand to be determined.
Patent EP-0449331-A2 (EP)
Inventor: OHISI FUJIO
IPC: C08G18/54
Filed: 1991-04-02
Abstract: A low-foaming polyurethane elastomer which is formed from
     (A) a prepolymer obtained by the reaction between polytetramethylene ether glycol and diphenylmethane diisocyanate, having a NCO content of 3-22 % by weight,   (B) a polyoxypropylenetriol having a number-average molecular weight of 400-5,000 and a short-chain diol having a molecular weight of 120 or less, and   (C) a foaming agent selected from water and halogenated hydrocarbons, 
and which has an urea bond concentration of 5 x 10⁻⁴ mole/g or less and a bulk density of 0.4-1 g/cm³.   
     The polyurethane elastomer is low in spring constant and excellent in properties such as compression set, compression durability and the like, and is useful as a vibration-damping material, particularly a vibration-damping material for railroad track such as flat low spring pad, pad for bridge tie or vibration-damping material for railroad track slab.
Patent EP-0471150-A2 (EP)
Inventor: PIPPIN JAMES MOODY
IPC: B65G47/10
Filed: 1991-05-08
Abstract: An automated ordering system has a gathering conveyor belt (103) and a plurality of product dispensers (105) onto the gathering conveyor belt, the plurality of product dispensers arrayed in a matrix in rows and columns wherein each row of product dispensers and each column of product dispensers share common control elements. The product dispensers are of cartridge type utilizing gravity to eject products from a cartridge (107) suspended above the gathering conveyor belt onto the gathering conveyor belt. A universal product dispenser platform accepts a wide range of different sizes and shapes of cartridges storing products to be dispensed. The universal product platform provides support for an actuator for singulating products mounted to the cartridge.
Patent EP-0458146-A2 (EP)
Inventor: SLAYTON MICHAEL H
IPC: G10K11/00
Filed: 1991-05-10
Abstract: A continuous wave driven ultrasonic transducer for determining Doppler frequency shift in reflected ultrasonic pressure waves in which the transmitter (40) and receiver (42) sections are constructed of a composite core (30) having a plurality of segments of piezoelectric material (32) separated by acoustic suppression material (34). Also disclosed is a method of reducing acoustic and mechanical cross-coupling between piezoelectric transmitter (40) and receiver (42) sections of an ultrasonic transducer by arranging segments of piezoelectric material (32) in a lateral array, and separating the piezoelectric segments with ultrasonic acoustic suppression material (34) to produce a composite transducer core (30) of reduced acoustic and mechanical cross-coupling.
Patent EP-0463466-A2 (EP)
Inventor: MAJER NORBERT DR
IPC: C07C229/64
Filed: 1991-06-11
Abstract: High purity 5-aminosalicylic acid which is suitable as starting material for the preparation of 5-aminosalicylic acid of pharmaceutical quality is obtained by a process in which azobenzene- 4-hydroxy-3-carboxylic acid is reduced with alkali metal bisulphide and/or polysulphide or ammonium bisulphide and/or polysulphide under elevated pressure, and the aniline which is formed is removed by distillation, and which is characterised in that the purification of the remaining crude product is carried out without intermediate isolation and comprises four consecutive steps.
Patent EP-0481438-A2 (EP)
Inventor: HYPPAENEN TIMO
IPC: F27B15/12
Filed: 1991-10-15
Abstract: The invention relates to a centrifugal separator and a method for separating particles from gases. The centrifugal separator (12) is a vortex chamber composed of cooling planar plates or panels (32, 34, 36) (i.e. they are distinctly non-cylindrical), having at least one gas inlet (40), at least one gas outlet (52) and at least one outlet (46) for the separated particles. The cross section of the side walls (32, 34, 36) of the vortex chamber forms a distinctly non-circular gas space (31) (e.g. a polygonal cross section), have a circularity of greater than 1, e.g. > 1.1, and preferably > 1.15. One or more vertical, parallel gas vortices may be created in the vortex chamber, the gas introduced into vertical narrow slots. The outlets (46) for separated particles are not one the same symmetrical axes as the outlets for purified gas (52). Two adjacent vortices may be provided in a common rectangular chamber. The separator (12) is preferably in conjunction with a circulating fluidized bed reactor (10).
Patent EP-0490259-A2 (EP)
Inventor: JURASZYK HORST DR
IPC: C07C309/72
Filed: 1991-12-04
Abstract: Amides of the formula I  R<1>R<2>N-CmH2m-CO-Z-Y-NH-CHR<3>-CHR<4>-(CH2)n-CR<5>R<SP >6> -X  I in which R<1> to R<6>, Z, Y, X, m and n have the meanings stated in Claim 1, and the salts thereof inhibit the activity of human plasma renin.
Patent EP-0461729-A2 (EP)
Inventor: VAN DER VEEN GEUKO
IPC: F23D14/26
Filed: 1991-06-14
Abstract: High turn down ratio burner, comprising a burner housing (1) having a connection (2) for a combustible gas/air mixture and a substantially tubular mixture passage (3) leading to a constricted burner throat or mouth (4), via which passage the burner is connectable to a combustion chamber (7) which is part of a heat exchanger (6) or forms a flue passage leading to such heat exchanger, further comprising a flame arrester (8), which is a flashback preventer, in the form of a porous, gas/air mixture-permeable hollow body covering the entire flow-through area towards the burner throat (4) and arranged with its concave side towards the burner throat (4), at a short distance upstream thereof, a number of constricted auxiliary gas passages (9) being arranged around the burner throat.
Patent EP-0464886-A2 (EP)
Inventor: ASHIDA KANEYOSHI
IPC: C08G18/66
Filed: 1991-06-17
Abstract: A polyurethane liquid crystal polymer-reinforced RIM composition having superior impact strength and flexural modulus is produced by a reaction-injection-moulding process. The chemistry involved in the preparation of this reinforced RIM material includes the simultaneous reaction and formation of a polyurethane liquid crystal polymer and a polyurethane RIM.
Patent EP-0456429-A2 (EP)
Inventor: NITTA KOICHI
IPC: H01S5/22
Filed: 1991-05-03
Abstract: A semiconductor laser device comprises a compound semiconductor substrate (30), a first cladding layer (32) formed on the substrate (30), an active layer (33) formed on the first cladding layer (32), made of In 1-y (Ga 1-x Aℓ x ) y P material (0 ≦ x < 1, 0 ≦ y < 1), and a second cladding layer (34) formed on the active layer (33). These first cladding layer (32), the active layer (33), and the second cladding layer (34) forms a double heterostructure. A lattice constant of the active layer (33) is larger than that of the substrate (30) by 0.3% or more. The lattice constants of the first and second cladding layers (32, 34) are substantially equal to that of the substrate (30).
Patent EP-0497127-A2 (EP)
Inventor: FISCHER REINER DR
IPC: A01N43/36
Filed: 1992-01-13
Abstract: Novel substituted 3-arylpyrrolidine-2,4-diones of the formula <IMAGE>  are provided,  in which     X represents hydrogen, alkyl, halogen or alkoxy,   Y represents hydrogen, alkyl, halogen, alkoxy or haloalkyl,   Z represents alkyl, halogen or alkoxy,   n represents a number from 0-3,   R represents hydrogen or the groups  -CO-R<1>, -CO-O-R<2>  in which  R<1> and R<2> have the meanings given in the application text, A represents alkyl, alkenyl, alkynyl, alkoxyalkyl, polyalkoxyalkyl or alkylthioalkyl which is optionally substituted by halogen, cycloalkyl which is optionally interrupted by hetero atoms or arylalkyl which is optionally substituted by halogen, alkyl, haloalkyl, alkoxy or nitro, and   B represents optionally substituted aryl or benzyl.   The novel compounds of the formula (I) have strongly pronounced insecticidal, acaricidal, fungicidal and antimycotic properties.