baber/WOPTO huggingface dataset:
Patent EP-0444358-A2 (EP)
Inventor: ANTOSHENKOV GENNADY
IPC: G06F17/30
Filed: 1990-12-21
Abstract: Dynamic optimization of a database access. During execution, based on the actual number of retrieved keys, or on the actual number of fetches (I/O operations) used to retrieve keys, a decision is made between alternative paths for completing the access. The invention features deciding not to retrieve records using the keys retrieved using a particular index if that retrieval could be expected to take longer than retrieving all records. A second index scan is begun during the first index scan, and a decision between alternative paths is made based on the number of keys retrieved during the second scan, or on the number of fetches incurred in the second scan. Scanning of an index is terminated if the number of retrieved keys exceeds a threshold corresponding to the point at which record retrieval using keys is likely to be more costly than full record retrieval. If all index scans are terminated, a full, sequential retrieval of all records is done.
Patent EP-0403367-A2 (EP)
Inventor: MOUSSAVI MEHDI
IPC: C25B3/23
Filed: 1990-06-12
Abstract: Preparation of a radical cation salt of formula:
 (Ar2).<+>X<->
 in which Ar is an optionally substituted aromatic hydrocarbon and X<-> is an anion chosen from AsF6<->, SbF6<->, ClO4<->, PF6<->, BF4<-> and (BC6H5)4<-> by electrochemical reaction of a solution of Ar in an organic solvent with a quaternary ammonium salt containing the anion X<->. The organic solvent is an alkyl formate such as methyl or ethyl formate. 
<??>The radical cation salt can be employed in an electron paramagnetic resonance (EPR) magnetometer which comprises a tube (21) containing this salt (27) and a material capable of absorbing water, consisting, for example, of particles of molecular sieve (23) mixed with alumina powder (25). 
<IMAGE>
Patent EP-0438136-A2 (EP)
Inventor: OBI HIROSHI C O MOCHIDA PHARM
IPC: G01N1/28
Filed: 1991-01-16
Abstract: A system (10) capable of automatically dispensing and diluting an accurate volume of a sample (11) is provided. The system comprises a removable nozzle tip (12) for collecting a predetermined volume of the sample (11), the nozzle tip (12) being inserted into the sample (11) to collect the sample by suction; a nozzle (14) comprising an inner tube and an outer tube onto which said nozzle tip is removably mounted, said nozzle having a liquid passage (14a) through which a reagent flows and a gas passage (14b) through which a liquid surface-detecting gas flows defined within the nozzle; a sample pump (16) for sucking and discharging the sample and the reagent into and out of the nozzle tip; a first three-way valve (18) being switched to the side of the reagent bottle (34) to communicate said reagent bottle with said sample pump (16) or to the side of the nozzle (14) to communicate said sample pump (16) with said nozzle (14); a plunger pump (20) for sucking and discharging a liquid surface-detecting gas (15) supplied from a gas source; a second three-way valve (22) being switched to the side of said gas source to communicate said gas source with said plunger pump (20) or to the side of said nozzle to communicate said plunger pump (20) with the nozzle (14); a pressure sensor (24) provided between said second three-way valve and said gas passage in said nozzle; and a two-way valve (26) provided between said pressure sensor (24) and said gas passage (14b) of said nozzle (14), and in the vicinity of said nozzle (14). 
     The system may further comprise a controller (32) for controlling the motion of the valves, the pumps, and the nozzle. 
     Also, the system may further comprise an X-Y table (46) on which sample containers (36) containing the samples, the nozzle tips, and the test tubes into which the sample is dispensed are aligned in rows; and a means (48) for traveling the nozzle.
Patent EP-0441261-A2 (EP)
Inventor: BUSSARD ROBERT W
IPC: H05H1/03
Filed: 1991-02-01
Abstract: An apparatus and method of enhancing nuclear fusion reactions utilizes a plasma, made up of ions and electrons, contained within a region, and enhances the density of the plasma using a collision-diffusion compressional enchantment process. Ion acoustic wave generated within a central region of the system permits increased reflection and scattering of ions and thereby reduces their mean free path within the core region to permit greatly increased ions density sufficient to enhance nuclear fusion reactions within the core.
Patent EP-0454051-A2 (EP)
Inventor: MORI SEIICHI C O INTELLECTUAL
IPC: H01L21/8247
Filed: 1991-04-23
Abstract: Improvement of a fuse for use in the redundancy technique particularly for a semiconductor memory device. The fuse is constituted by an MIS type transistor (150) having a gate insulating layer (107), which comprises at least two types of insulating films (102, 104, 106). Redundancy information is stored by shifting the threshold value of the MIS type transistor (150).
Patent EP-0454134-A2 (EP)
Inventor: FURUYAMA TOHRU C O INTELLECTUA
IPC: H01L21/66
Filed: 1991-04-25
Abstract: A semiconductor device comprises a bonding pad (2) serving as a power supply terminal and a plurality of bonding pads (11, 12) having the same function and serving as one of grouped terminals other than the power supply terminal.
Patent EP-0467063-A2 (EP)
Inventor: YU LIN-CHEN ONE DOE RUN COURT
IPC: C07C69/76
Filed: 1991-06-07
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, which comprises forming a reaction mixture of a phenol, at least one base catalyst and an acrylate, in the presence of a complexing agent effective in increasing the rate of reaction, wherein (i) substantially all of the side-product is removed from said reaction mixture prior to the addition of the complexing agent and (ii) all or substantially all of the acrylate is added at once to the reaction mixture. The process results in higher yields of the desired product, in a shorter period of time, with a reduction of undesirable by-products.
Patent EP-0484893-A2 (EP)
Inventor: TANAKA KOJI
IPC: C08J9/16
Filed: 1991-11-06
Abstract: The present invention relates to a composition comprising hollow fine particles wetted with a liquid organic compound not dissolving the particles, and to a method of preparing the hollow fine particles, in which thermally expandable microspheres are heated in the liquid organic compound not dissloving the particles; said hollow fine particles are substantially not agglomerated and can be easily and homogenously compounded with a plastics, coatings, rubber, sealant and the like.
Patent EP-0450680-A2 (EP)
Inventor: FENNEMANN WOLFGANG
IPC: B01J37/02
Filed: 1991-03-08
Abstract: A catalyst which contains vanadium oxide and alkali compounds and serves to oxidize SO2 to SO3 is produced in that prefabricated carrier bodies are impregnated with impregnating solutions which contain vanadium and alkalis, the impregnated carrier bodies are thermally treated at elevated temperature and this is followed by an activation under oxidizing conditions at a temperature from 750 DEG C. to 1000 DEG  C. In the production of the impregnating solutions, fine-grained V2O5 is dissolved in an acid aqueous medium with addition of a reducing agent and a reduction to form VO2+ is effected, acid and reducing agent are used in approximately stoichiometric amounts for the dissolution and reduction of V2O5. The alkalis are used in the form of salts. The solution is adjusted to contain SO4 in an amount which is sufficient to combine the entire amount of the alkalis in neutral sulfates during the drying and activation.
Patent EP-0464957-A2 (EP)
Inventor: BOCK JAN
IPC: C08F220/56
Filed: 1987-09-08
Abstract: Novel hydrophobically associating terpolymer compositions containing cationic functionality are described. These water soluble or dispersible polymers contain both water soluble and water insoluble monomers. The water soluble monomers are ethylenically unsaturated nonionic monomers, such as acrylamide (AM), and cationic monomers, such as a salt of an amide base (C), such as 3-methacrylamidopropyltrimethylammonium chloride (MAPTAC), 2-methacrylatoethyltrimethylammonium chloride (METAC) and diallyldimethylammonium chloride (DMDAAC). The hydrophobic or water insoluble monomer is a higher alkyl(meth)acrylamide or alkyl(meth)-acrylate (R). These polymers are referred to as CRAM. While the novel compositions of this invention impart unusual properties to water based fluids, they are extremely efficient for clean-up of waste waters containing organic contaminants and for breaking oil-in-water emulsions.
Patent EP-0478117-A2 (EP)
Inventor: FUJITA TAKASHI MITSUBISHI PETR
IPC: C08F297/08
Filed: 1991-07-11
Abstract: A process for preparing propylene block copolymers, comprising a preceding polymerization step in which a crystalline homopolymer of propylene, or a propylene-ethylene copolymer containing 7 wt.% or less of ethylene is produced in the presence of a catalyst comprising the following components (A) and (B), and a succeeding polymerization step in which the polymerization is continued in the presence of at least part of the homopolymer or copolymer, and of the following component (C) further added to give a copolymer with a polymerization ratio (weight ratio) of propylene to ethylene of from 0/100 to 90/10; the polymerization amount at the preceding polymerization step being from 30 to 95 wt.% of the total polymerization amount at the preceding and succeeding polymerization steps;
     component (A):   a solid catalyst component of Ziegler catalysts comprising as essential components titanium, magnesium and a halogen;   component (B):   an organoaluminum compound; and   component (C):   an internal olefin having 3 to 20 carbon atoms, or an olefinic compound having 2 to 20 carbon atoms which contains a polar group at its α-position.    The process can solve the problem of stickiness imparted to the copolymer due to the existence of a rubber-like copolymer, which has been the conventional problem caused upon preparing a crystalline propylene polymer block and a rubber-like propylene-ethylene copolymer block by a two-step polymerization process.
Patent EP-0487205-A2 (EP)
Inventor: ANDERSON JAMES S
IPC: C07C235/00
Filed: 1991-10-18
Abstract: The novel hair dye compositions containing a compound of the formula:
       
 wherein R₁, R₂, R₃ and R₄, which may be identical or different are hydrogen, alkyl, hydroxyalkyl, polyhydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl aminoalkyl and dialkylaminoalkyl, each alkyl group and each alkoxy group having from about 1 to about 6 carbons and R₅ is hydrogen or alkyl containing from about 1 to about 6 carbon atoms are disclosed. More specifically, the present invention concerns the inclusion of such compounds of formula I in hair dye compositions as direct dyes, and especially the novel compound 4-(2-hydroxyethylamino)- 3-nitrobenzamide. The compounds, some of which are novel, provide a yellow dye base for the hair dyeing compositions.
Patent EP-0493945-A2 (EP)
Inventor: USHIGAMI YOSHIYUKI NIPPON STEE
IPC: C21D8/12
Filed: 1991-12-20
Abstract: A process for producing a grain-oriented electrical steel sheet having a low watt loss, in which a steel strip consisting, in wt%, of 0.8 to 4.8 Si, 0.012 to 0.050 acid-soluble Al, 0.01 or less N, and the balance consisting of Fe and unavoidable impurities is cold-rolled to a final thickness of 0.15 mm or less, primary-recrystallization annealed, applied with a annealing separator containing magnesia as a major component by electrostatic spray painting, and then final-texture annealed.
Patent EP-0469965-A2 (EP)
Inventor: OROZCO JOSE-LUIS
IPC: C08B37/10
Filed: 1991-07-24
Abstract: The preparation of the calcium salt of heparin or of products derived from heparin, such as the low molecular weight fractions obtained by extraction or by partial depolymerisation is described. The process according to the invention is characterised in that the calcium salt of heparin or of its derivatives is prepared by employing ion exchange membranes which, when subjected to an electrical field, allow a cation exchange to be carried out on the sodium heparin in a single stage.
Patent EP-0479705-A2 (EP)
Inventor: VIDAL PEIRO JOSE
IPC: F16B21/02
Filed: 1991-06-27
Abstract: Such element is divided into three constituent parts, parts (1) and (4) being a sort of clip designed to grip both sides of a plate (3) or element to be joined, and a shank (11) designed to be screwed to the other element to be joined (13), the shank (11) head (10) being insertable into the clip (1-4) by force, such head being blocked by the arms (8) provided in part (4), which is resiliently deformable radially. These arms can, upon rotation of part (4) in respect of part (1), be caused or otherwise to face recesses (16) in part (1), thereby releasing such arms (8) for resilient deformation thereof, or locking the same to prevent the shank (11) head (10) from being removed.
Patent EP-0496282-A2 (EP)
Inventor: NAKAYAMA HIROSHI
IPC: G11C29/00
Filed: 1992-01-16
Abstract: A redundant technology is applied to a semiconductor memory device for rescuing from defect, and comprises a plurality of programming circuits (151 to 15i) for storing row addresses assigned to defective word lines replaced with redundant word lines (RWL1 to RWL4), wherein the programming circuits monitor decoded row address signals to see whether or not one of the defective word lines is designated with an external row address signal for supplying enable signals and prohibiting signals to word line driving circuits (121 to 12i) and redundant word line driving circuits (141a to 14ib) upon matching therebetween, and the enable signals and prohibiting signals are encoded so that the number of signal lines (EC1 to ECk) is decreased, thereby making design work easy.
Patent EP-0526793-A2 (EP)
Inventor: IMMEL OTTO DR
IPC: C07C209/68
Filed: 1992-07-21
Abstract: Diphenylamine, which can be substituted by lower alkyl and/or lower alkoxy, is obtained by catalytic dehydrogenation from the appropriately substituted dicyclohexylamine, the appropriately substituted N-cyclohexylaniline or a mixture of the two, a rhodium-containing catalyst being employed.
Patent EP-0529682-A2 (EP)
Inventor: MOLLER JENS KLOPPENBORG
IPC: B01D65/00
Filed: 1988-12-06
Abstract: A membrane filtration unit (6,42) comprises a stack (60) of rectangular membranes (61), arranged in pairs (62), where longitudinal edges of the membranes (61) define a surface, at which the interior (103) between the two membranes (61) of each pair (62) is open (at 104) in the entire length of the edges of the membranes, while the interior (105) between adjoining membranes (61) of each two consecutive pairs (62) is closed in a marginal zone by means of a cured binder (106). Advantageously, the stack (60) of membranes (61) may be enclosed in a cage-like structure, that may comprise a permeate collection chamber (70), solid end plates (65), a solid bottom plate (66) and supporting ribs (67) extending between the end plates. 
     A membrane filtration cassette comprises a membrane filtration unit (6,42) as set forth above mounted in a cassette frame (1-5, 35-38). 
     In a method of making a filtration unit as set forth above, envelope-shaped membrane units (62) are placed in a stack, a curable liquid binder (101) is introduced between the membrane units from at least one surface of the filtration unit to a predetermined depth (a), and upon curing of the binder a layer of the binder together with the marginal portions of the edges of the membrane units embedded therein is removed, such as by surface cutting or machining, up to a depth (b) smaller than the depth (a).
Patent EP-0520837-A2 (EP)
Inventor: GAHAN RICHARD A
IPC: G06F13/364
Filed: 1992-06-29
Abstract: A logic circuit for use as an arbiter to arbitrate among N devices of a computer system for access to a shared resource. The arbiter generates state variables to represent arbitration win information. The state variables are generated through the use of request for arbitration signals input to the arbiter, present values of the state variables and internally generated intermediate arbitration win signals to provide a cost effective, efficient implementation of the logic required for the arbitration in a smaller physical solution for the arbitration logic.
Patent EP-0528642-A2 (EP)
Inventor: ANDERSON KAREN LOUISE
IPC: H04N1/41
Filed: 1992-08-13
Abstract: Improved apparatus and method for encoding and decoding information is disclosed herein. The invention uses the same marker segment information to engage an encoder or a decoder. The technique eliminates many of the complexities associated with building parameter lists, and generating various types of marker segments in a form compatible with both the decode and encode processing. The encoder performs for example JPEG, Huffman or arithmetic compression.
Patent EP-0539028-A2 (EP)
Inventor: DEBALKO GEORGE ANDREW
IPC: H04M3/30
Filed: 1992-09-24
Abstract: Disclosed is a Maintenance Termination Unit (MTU) for an Integrated Services Digital Network (ISDN). A tone ringer (13) is provided at the end of the customer loop to generate an AC signal. The signal is applied through a transformer (T₁) and rectifier (D₁) to charge a capacitor (C₁). The resulting voltage across the capacitor causes a normally closed MOS switch (Q₁, Q₂) to open and disconnect the customer until the capacitor discharges.
Patent EP-0553553-A2 (EP)
Inventor: BULFER ANDREW FREDERICK
IPC: H04L9/10
Filed: 1992-12-04
Abstract: A security node (150) disposed in the telecommunications network (156) connecting calling (101) and called (102) parties transforms information (which can be voice, data, facsimile, video and other types of calls or messages) encrypted in a first format to (a) encrypted information in a different format or to (b) non-encrypted information, and vice-versa. The node is accessible from any location connected to the network. By routing calls or messages originated by the calling party (101) and destined for the called party (102) via the security node (150), and providing appropriate control signals to the node, the information may be encrypted only over a portion of the transmission path between the parties, and clear over the remainder of the transmission path. Alternatively, the information may be encrypted in different portions of the path using different encryption algorithms. This arrangement enables the parties to obtain relatively secure communications even if only one party has a security device at the originating or terminating end, or if the parties have security devices using different handshaking protocols and encryption algorithms.
Patent EP-0505288-A2 (EP)
Inventor: TANAKA KAZUHIRO
IPC: G02F1/015
Filed: 1992-03-20
Abstract: An optical bandpass filter comprises a waveguide region (1) for guiding an optical beam from an input end to an output end, a clad structure (11, 12, 15, 16) provided above and below the waveguide region for confining the optical beam therein, a plurality of quantum well boxes (20) formed in the waveguide region with respectively different quantum levels for selectively absorbing an optical component in the incident optical beam that causes a resonance with the quantum level of the quantum well box, a barrier region (21) provided in the waveguide region for surrounding each of the plurality of quantum well boxes with respect to all of three-dimensional directions and comprising a material having a second band gap that is substantially larger than said first band gap, and window means (3) provided on the clad structure for directing a control optical beam such that the control optical beam irradiates the plurality of quantum well boxes.
Patent EP-0531254-A2 (EP)
Inventor: LENT BOGDAN
IPC: G07F5/18
Filed: 1992-08-18
Abstract: When offering, ordering and/or dispensing services, permits and/or products by means of a vending machine (5), the data input by the user of the vending machine are checked by the vending machine (5) for completeness and plausibility and, in the event of incompleteness or contradiction, the specification data input are transmitted to the workstation of an information assistant located at a remote location. At the same time, the information assistant is acoustically or audio-visually connected to the vending machine (5) in order to confirm, correct and/or complete the specification data by means of communication. The revised data are returned to the vending machine (5) whereupon the service, the permit and/or the product is offered, ordered and/or output. To carry out the method, the vending machine (5) is connected via a line network (3) to a spatially remote workstation unit occupied by an information assistant. The vending machine (5) has an acoustic or audio-visual communication unit (11, 13, 14, 17) interacting with the information assistant, a data input unit (9a, 9b), a monitoring unit (19b) for checking the completeness and plausibility of the data input, an output unit (12) and an interface (20) to the network (3). The system considerably improves the quality of the information provided since several information assistants having adequate information material are centrally combined. Furthermore, personnel can be saved since many vending machine users are trained and instructed in independent use of the vending machine by the assistance provided by the information assistant and thus the information assistants are relieved in future. Railway stations, public places and so forth, can be made safer again, among other things in the evening, by the possibility of monitoring the environment of the vending machine and by calming intervention by means of words. <IMAGE>
Patent EP-0495766-A2 (EP)
Inventor: JETTER FRITZ DIPL-ING
IPC: F23G5/00
Filed: 1992-01-14
Abstract: In a disposal installation in accordance with the process of the invention, residual refuse (Rm) and contaminated parts (AL) from a landfill (D) are fed via a sorting unit (SA) to a pyrolysis unit (PA). The resulting pyrolysis gas (PG) and the pyrolysis coke (PK) are used as energy carriers for a furnace consisting of a burner (BR) and an afterburner (NB). In this way, the pyrolysis gas (PG), the pyrolysis coke (PK) and further contaminated parts (AL) are, without pollution of the environment, disposed of and converted to an inert material (IM). A high energy yield in the thermal decomposition of organic material, plastics, leather and rubber is achieved. <IMAGE>