baber/WOPTO huggingface dataset:
Patent CA-2167169-A1 (CA)
Title: Imidazo[1,2-a]pyrazin-4-one, preparation thereof and drugs containing same
Inventor: ALOUP JEAN-CLAUDE
IPC: A61P25/28
Filed: 1994-07-11
Abstract: Compounds of formula (I), wherein either R is C=R3, C(R4)R5 or CH-R6, R1 and R2 are hydrogen, halogen, alkyl, alkoxy, amino, acylamino, -NH-CO-NH-Ar, -N=CH-N(alk)alk', nitro, cyano, phenyl, imidazolyl or SO3H, R3 is oxygen, NOH, NO-alk-COOK or CH-R7, R4 is alkyl, -alk-Het or alk-Ar, R5 is alkyl, -alk-Het or -alk-Ar, or C(R4)R5 is cycloalkyl, R6 is hydroxy, alkyl, NR8R9, -alk-OH,-alk-NR8R9, -alk-Ar or -alk-Het, R7 is hydroxy, alkyl, phenyl, -alk-Ar, -alk-Het, NR10R11 or a heterocyclic ring, R8 and R9 are alkyl, or R8 is hydrogen and R9 is hydrogen or alkyl, -COR12, -CSR30 or -SO2R13, R10 and R11 are alkyl or cycloalkyl, R12 is alkyl, cycloalkyl, phenyl, -COO-alk, -CH2-COOX, -CH2-NH2, -NH-alk, -NH-Ar, -NH2 or -NH-Het, R13 is alkyl or phenyl, R30 is -NH-alk, -NH-Ar, -NH2 or -NH-Het; or R is a 2-imidazolylmethyl radical and each of R1 and R2 is a hydrogen atom. The compounds of formula (I) are  alpha -amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonists, said receptor also being known as the quisqualate receptor. Furthermore, the compounds of formula (I) are non-competitive N-methyl-D-aspartate (NMDA) receptor antagonists, and especially NMDA receptor glycine modulation site ligands.
Patent CA-2167832-A1 (CA)
Inventor: HENDERER WILLARD E
IPC: B23D61/12
Filed: 1995-02-07
Abstract: A bimetallic band saw blade (4) has a high speed cutting edge (10) welded to a backing band (8) of a steel alloy containing the following elements percentages by weight Cr - 5 % to no more than 1.5 %, V - 0.10 % to 0.75 %, Mo - 1.5 % to 25 %; the alloy also contains C, Si, Mn, Nb and/or Ni and Al in such varying amounts that the total alloy content, except for Fe and inevitable impurities, is in the range of 3.12 % to 8.48 %.
Patent CA-2168525-A1 (CA)
Inventor: CAPAN RONALD R
IPC: H01Q7/06
Filed: 1996-01-31
Abstract: Cab signalling apparatus for use on-board a vehicle which is propelled on tracks having a cab signal transmitted through rails.  One or more plate mounted antenna is positioned above a rail to induce therein a signal representative of the cab signal current in the rail.  A cab signal coil is mounted on at least one of the plates having an orientation generally perpendicular to the rail to receive a cab signal.  A second noise coil is mounted on at least one of the plates to sense EMI representative of the undesired EMI induced in the cab signal coil.  The preferred embodiments are that the plates have a generally rectangular profile and in some embodiments the plates will have a square profile.  The respective noise and cab signal coils are angularly displaced from each other.  In some embodiments a single core is used having both noise and cab signal coils mounted thereon, while other embodiments use multiple plates.  On single plate embodiments the noise and cab signal coils may be overlapped or interleaved.  The plates have mounting holes which permit angular adjustment in all directions.
Patent CA-2170470-A1 (CA)
Title: Low Frequency Audio Conversion Circuit
Inventor: ODA MIKIO
IPC: H04N5/60
Filed: 1996-02-27
Abstract: A low frequency audio conversion circuit for converting the frequency of low frequency audio components. An input audio signal includes a low frequency audio component lower than the frequency a speaker can reproduce. The low frequency audio component is filtered and extracted by a low pass filterand full-wave rectified to generate even-numbered harmonics of the low frequencyaudio component. Secondary harmonics are extracted from the even-numbered harmonics and added to the input audio signal after being amplified to an appropriate level. When a speaker whose low frequency sound reproduction characteristics are poor is used, and a low frequency component lower than the frequency the speaker can reproduce is supplied, the low frequency audio component is reproduced as secondary harmonics which fall within the frequency range of the speaker. Thus, the low frequency audio component is compensated, and a powerful sound is reproduced at a low cost without degrading the sound.
Patent CA-2170680-A1 (CA)
Inventor: DE ZEN VITTORIO
IPC: E04B1/00
Filed: 1996-02-29
Abstract: A method of erecting structural walls reinforced with encased concrete comprising assembling a plurality of hollow structurally stable interlocking thermoplastic wall forming components into at least two interlocked hollow wall sections disposed one relative to the other such that they can be spanned by and will support a platform placed on top thereof, said interlocked wall forming components being open to the top of said wall sections and being in internal concrete flow communication with each other, spanning said wall sections with a platform placed on top thereof, said platform providing access for the pouring of concrete into some of said interlocked wall forming components, then pouring concrete into said some of said interlocked wall forming components to flow between said components.
Patent CA-2173830-A1 (CA)
Inventor: KUBELA RUDOLF
IPC: C07F5/02
Filed: 1994-11-03
Abstract: A process is disclosed for the preparation of simvastatin and its analogs through a novel intermediate (III), which enables a selective .alpha. carbon alkylation of the C-8 acyl side chain.
Patent CA-2178927-A1 (CA)
Inventor: COHEN ALLEN BARRY
IPC: A61K38/08
Filed: 1993-12-15
Abstract: Disclosed are peptide-based compositions and methods for inhibiting and modulating the actions of CXC intercrine molecules. The antileukinate peptides described inhibit IL-8, GRO and MIP2.beta. binding to neutrophils and neutrophil activation. The peptides are particularly advantageous as they inhibit IL-8-induced enzyme release at a 25 fold lower concentration than is required to inhibit chemotaxis, which makes them ideal for treating various inflammatory diseases and disorders including, amongst others, Adult Respiratory Distress Syndrome (ARDS), cystic fibrosis and chronic bronchitis.
Patent CA-2179924-A1 (CA)
Title: Method of Tightening a Bolt with an Optimum Time
Inventor: SATO SATOSHI
IPC: B25B23/14
Filed: 1996-06-25
Abstract: A method of tightening a bolt in an optimum time length does not require an additional program for controlling speed once optimum internal parameters have been determined through several learning cycles.   A target torque is first preset and the nut runner is  subjected to several learning cycles so that the nut runner automatically determines such internal parameters as to stop the motor immediately after the target torque is reached, requiring a minimum time for tightening the bolt.
Patent CA-2181330-A1 (CA)
Title: Method of coating glass
Inventor: KIRKBRIDE BERNARD JAMES
IPC: C03C17/00
Filed: 1996-07-16
Abstract: A method of providing a tin oxide coating on a moving flat or float glass substrate by chemical vapour deposition by pre-mixing gaseous streams of tin tetrachloride and water at a temperature of between 100°C and 240°C and directing the unitary pre-mixed stream against the glass in substantially laminar flow, the tin tetrachloride and the water only reacting in the region of the surface of the glass to form the tin oxide coating on the glass. Alternatively, gaseous streams of anhydrous hydrogen chloride, tin tetrachloride and water may be premixed to form the unitary pre-mixed stream, which pre-mixed stream impacts the glass in substantially laminar flow, the tin tetrachloride and the water reacting with one another in the region of the glass to form tin oxide which forms a coating on the glass.
Patent CA-2183995-A1 (CA)
Inventor: COHEN YIGAL
IPC: A01N63/10
Filed: 1995-01-30
Abstract: Composition permettant de protéger des plantes en culture contre les mycoses, et comprenant une ou plusieurs huiles de poisson utilisées en association avec un diluant adapté à un usage agricole, et, de préférence, avec un sel métallique. Un procédé de protection de plantes en culture contre les mycoses est également décrit, ce procédé consistant à appliquer à la semence, au tubercule et aux feuilles d'une plante en culture, ou au lieu de culture, une huile de poisson en quantités suffisantes pour induire une résistance locale et/ou systémique aux mycoses dans la plante.
Patent CA-2184742-A1 (CA)
Title: Device for controlling a flow of liquid steel from a ladle to a continuous casting distributor
Inventor: RICHARD FRANCOIS NOEL
IPC: B22D11/10
Filed: 1995-02-27
Abstract: A device for controlling a flow of liquid steel from a ladle (1) to a continuous casting distributor (8).  The device includes a frame connected to the ladle (1) and comprising a guide assembly; a plate (3) movable on the guide assembly for sealing the casting opening (2); an assembly for compressing said plate (3); and a jet nozzle tube (4) extending from the casting opening (2). The plate for scaling the casting opening (2) is a sealing plate (3) designed only to seal the casting opening (2); the jet nozzle tube (4) and a plate (34) together form a rigid assembly moving along the guide assembly to a position opposite the casting opening where it replaces the sealing plate (3) which is thus driven from this position; and a compression assembly holds the plate (34) of the plate/jet nozzle tube assembly (4, 34) in sealing contact with a fixed upper plate (30).
Patent CA-2185127-A1 (CA)
Inventor: HEINZEL GUNTER
IPC: C02F1/52
Filed: 1995-03-10
Abstract: L'invention se rapporte au traitement d'eaux usées et d'autres matières polluées. On prépare un composé de la formule générale (ZO)nAln(OH)n-mClm (ou d'une formule empirique très proche de celle-ci), dans laquelle Z est dérivé d'un matériau d'aluminosilicate, en activant ce matériau, par traitement avec de l'acide ou en le soumettant à un échange d'ions ammonium, puis en chauffant le matériau ainsi activé en présence d'un composé alumino. L'aluminosilicate préféré est un minéral contenant de la zéolite à structure de clinoptilolite, et le composé alumino préféré est un chlorure de polyaluminium. Le produit obtenu possède un pH neutre, n'est pas toxique, et est approprié pour être utilisé dans des bassins de flottaison ou de décantation; il déstabilise les suspensions, les dispersions et les émulsions, peut être utilisé sur une large plage de pH, est amphotère et particulièrement approprié à l'élimination de cations métalliques lourds et d'anions de phosphate; en outre, il réduit l'insuffisance en oxygène chimique et en oxygène biologique, ainsi que les hydrocarbures halogénés organiques adsorbables, diminue la quantité de boues tout en augmentant simultanément la teneur de celles-ci en matières sèches, et ne gonfle pas; enfin, il est économique à l'usage et n'est pas nocif sur le plan de l'environnement.
Patent CA-2185731-A1 (CA)
Inventor: CHEN JUIN-HWEY
IPC: G10L19/00
Filed: 1996-09-17
Abstract: A speech compression system called "Transform Predictive Coding", or TPC, provides for encoding 7 kHz wideband speech (16 kHz sampling) at a target bit-rate range of 16 to 32 kb/s (1 to 2 bits/sample). The system uses short-term and long-term prediction to remove the redundancy in speech. A prediction residual is transformed and coded in the frequency domain to take advantage of knowledge in human auditory perception. The TPC coder uses only open-loop quantization and therefore has a fairly low complexity. The speech quality of TPC is essentially transparent at 32 kb/s, very good at 24 kb/s, and acceptable at 16 kb/s.
Patent CA-2186001-A1 (CA)
Title: Method and device for determining toxicity and application thereof
Inventor: PORTMANN RUDOLF
IPC: G01N33/18
Filed: 1995-03-13
Abstract: The invention concerns a method for determining the toxicity of water-soluble substances or of substances which can be mixed with water and thus obtaining quantitative information concerning the toxic effect of said substances. The invention helps to reduce the number of tests, necessary hitherto, performed on mammals. According to the method, at least two measurements determine the variation in mobility and/or size of test organisms in an aqueous medium, under the influence of at least one toxic substance. A device for carrying out the method comprises an image-detection unit which detects the object and sequentially records images of this object in at least one plane at predetermined time intervals. Arranged downstream of the image-detection unit is an evaluation arrangement with a computer and display devices which statistically evaluate the mobility and/or size of the organisms in relation to the existing toxicity. The method is used in particular for determining toxic influences on the environment, in particular water fauna, and for determining side-effects and contra-indications of pharmaceuticals and foodstuffs.
Patent CA-2186310-A1 (CA)
Inventor: BARAZANI GIDEON
IPC: B23B27/04
Filed: 1996-09-24
Abstract: A cutting tool assembly comprises a tool shank having a shank holding portion and an exchangeable adaptor. The adaptor has an adaptor mounting portion to be secured to the shank holding portion with clamping means, and an insert retaining portion for retaining a replaceable cutting insert, the insert retaining portion projecting outwardly from the adaptor mounting portion. The adaptor mounting portion has a side wall formed with a protrusion which has a protrusion abutting surface substantially parallel to the side wall. The shank holding portion has a face surface generally parallel to the side wall of the adaptor mounting portion and formed with a recess mating with and capable of receiving the protrusion of the adaptor mounting portion. The clamping means comprises an adaptor through bore formed adjacent a rear end of the adaptor and passing through the protrusion, a threaded bore formed in the shank holding portion and aligned with the adaptor through bore, and a clamping screw. The rear end of the adaptor is formed with a transverse slit merging with the adaptor through bore, and at least a portion of the through bore, which is disposed in the protrusion, tapers in the direction towards the protrusion abutting surface of the adaptor mounting portion, the screw head portion being capable of bearing against the tapered portion of the through bore.
Patent CA-2187861-A1 (CA)
Title: Blood glucose strip having reduced sensitivity to hematocrit
Inventor: YU YEUNG S
IPC: C12Q1/54
Filed: 1996-10-15
Abstract: A reagent strip for measuring glucose concentration in whole blood has reduced interference of hematocrit with the glucose measurement. When a biological fluid contacts the strip, it causes, in a reagent impregnated in the strip, a color change that is a measure of the glucose concentration in the fluid. However, the color change is also affected by the red blood cell concentration (hematocrit), thereby reducing the accuracy of the glucose measurement. The hematocrit effect is reduced by adding to the reagent an acrylic acid polymer.
Patent CA-2187925-A1 (CA)
Inventor: JONES COLIN
IPC: G06F9/44
Filed: 1995-04-19
Abstract: An interface device, for use in a data management system, interfaces between a plurality of application programs, each requiring a device dependent message to run a transaction, and a client device capable of requesting a transaction to be run.  The interface device receives device independent messages, from a client device, each containing a keyword, and translates these into device dependent messages which ate sent to application programs. The device dependent message returned from the application program is translated by the interface into a device independent message before being sent to the client device.
Patent CA-2190463-A1 (CA)
Title: Folding portable overhead projector
Inventor: FOG STEPHEN C
IPC: G03B21/30
Filed: 1995-05-04
Abstract: A folding overhead projector (10) having a stage body (12) housing a fresnel lens (16) on its top surface.  The body is thicker on one side to form a lamp enclosure (14).  A hinged mirror is provided within the body and a hinged lamp socket within the lamp enclosure.  Two pairs of folding legs (24, 26) are hingedly coupled to the body and lamp enclosure and fold out to lower the mirror and lamp and form a collapsible base.  The legs tilt the lamp and mirror so that light is reflected by the mirror up through the fresnel lens.  Additional pairs of folding legs provide balance.  A collapsible bellows (47), a light baffle (25), and the mirror provide a light and airtight enclosure for the lamp and mirror.
Patent CA-2194545-A1 (CA)
Title: Channel hopping in a radio communications system
Inventor: ANDERSSON CLAES H KAN
IPC: H04B1/713
Filed: 1995-07-13
Abstract: The invention relates to a method and to an arrangement for effecting base orthogonal channel hopping between mobile stations (MS1-MS3) and a base station in a radio communications system. Connections (F1-F3) having low attenuation are allotted a number of channels having high interference I  (channel, t). Connections (F1-F3) that have higher attenuation are allocated a number of channels that have lower interference I (channel, t). A channel allocation means (211) in the base station functions to produce channel hopsequences which are transferred to hopsequence lists (204-206) in the mobile stations (MS1-MS3), via a control channel SACCH. The channel hopsequences are also transferred to corresponding hopsequence lists (201-203) in the base station. Attenuation of the connections (F1-F3) and interference on the channels I (channel, t) are measured continuously in the channel allocating means (211), wherein the best channels with respect to interference are used. The channel allocation means creates the channel hop sequences in accordance with the principle that the better a connection with respect to attenuation, the poorer the channels with respect to interference that are allocated to the connection.
Patent CA-2196979-A1 (CA)
Title: 7-azabicyclo¬2.2.1|-heptane and -heptene derivatives as cholinergic receptor ligands
Inventor: HARMAN W DEAN
IPC: A61K31/395
Filed: 1995-08-25
Abstract: 7-Azabicyclo[2.2.1]-heptane and -heptene derivatives are disclosed that can be administered to a mammal, including a human, to treat disorders associated with a decrease or increase in cholinergic activity.
Patent CA-2197809-A1 (CA)
Inventor: LANGLOIS EDOUARD
IPC: G01B7/06
Filed: 1997-02-18
Abstract: Le précis n'est pas disponible en ce moment
Patent CA-2201200-A1 (CA)
Title: System and method for computer based test creation
Inventor: BURNS RICHARD
IPC: G06F17/21
Filed: 1997-03-27
Abstract: A computer-based test creation system and method for generating test items.  The test creation process includes creating items in electronic form and allowing access by a plurality of reviewers via a network.  The reviewers may review the item for content, fairness and format, and collaborate with each other before indicating that the item is acceptable for inclusion in a test. After the administration of the items to test takers, item performance may be evaluated on-line by reviewing electronic feedback from the administrations and creating electronic evaluation reports.  Since the items are created in an electronic form, the items may further include new forms of stimuli such as graphics and multimedia.
Patent CA-2205921-A1 (CA)
Inventor: VALENTINCIC CHARLES C
IPC: A61M39/02
Filed: 1995-11-15
Abstract: Obturateur comportant une canule sensiblement rigide et un élément obturant placé pour pouvoir communiquer avec la canule. L' élément obturant constitué d'un matériau sensiblement élastique et comportant une fente le traversant peut se déplacer par rapport à la canule entre une première position de fermeture et une deuxième position d'ouverture. La fente est pratiquement fermée du fait de l'élasticité du matériau de l'élément obturant lorsque ce dernier se trouve en position de fermeture tandis que la canule coopère en s'étendant à travers la fente lors du déplacement de l'élément obturant entre la position de fermeture et la position d'ouverture à l'établissement d'un chemin d'écoulement du fluide traversant la canule et l'obturateur. Par ailleurs, un élément de fermeture indépendant de l'écoulement de fluide traversant le chemin d'écoulement assure mécaniquement la fermeture lorsque l'élément obturant est placé en position d'ouverture.
Patent CA-2207734-A1 (CA)
Title: Improved mobile assisted handoff
Inventor: KALLIN HARALD
IPC: H04W36/30
Filed: 1995-12-11
Abstract: Several mobile assisted handoff methods for use in the cellular communication system comprising a plurality of cells are disclosed. First, the quality level of a cell a mobile station is presently using is measured to determine whether the quality level is above or below a threshold. If the quality level is below the threshold, a primary list of cells is assigned to the mobile station, whereas if the quality level is above the threshold, a secondary list of cells is assigned to the mobile station. The quality level of each of the assigned cells is then measured by the mobile station and reported to the communication system.
Patent CA-2208407-A1 (CA)
Title: Combination lift fittings
Inventor: LAKE WILLIAM
IPC: B65D90/00
Filed: 1997-06-20
Abstract: The present invention provides a combination lift fitting comprising an offshore padeye and corner casting. The combination lift fitting provides a dual use assembly that can be used for a wide variety of applications, particularly offshore and shipping routes.
Patent CA-2210021-A1 (CA)
Title: A new process for the manufacture of 1,3-cyclohexanedione
Inventor: ELANGO VARADARAJ
IPC: C07C62/24
Filed: 1997-07-09
Abstract: A new process for the manufacture of 1,3-cyclohexanedione is disclosed wherein a selected resorcinol is reduced with a hydrogen donor in the presence of a metal catalyst to produce a product which is then neutralized with an acid.
Patent CA-2210552-A1 (CA)
Title: System and method for mitigating the visual effects of halo
Inventor: HARRINGTON STEVEN J
IPC: G03G15/01
Filed: 1997-07-16
Abstract: A method for mitigating or eliminating a halo effect in a printer when black objects are adjacent color objects. In a full color xerographic printer, particularly an image on image printer in which full color composite images are imaged and developed in a single pass through the xerographic system, an image processing method is described to reduce or eliminate the halo effect. When a black object is to be placed adjacent a colored object (e.g. black text on a magenta background) a determination is made to locate the boundary between the black and the colorant. The black pixels immediately adjacent the colored objects are created using process black (a combination of cyan, magenta and yellow colorants) while the central and other black areas not adjacent a colored object are created using black toner only. Various half bitting approaches are used to balance the trade off between edge sharpness and elimination of halo effect.
Patent CA-2211232-A1 (CA)
Inventor: GRAEF H THOMAS
IPC: B65G47/52
Filed: 1996-02-27
Abstract: A seamless paper media gate (10) for supporting moving sheets thereon while enabling the sheets to be directed in a range of angular directions, includes a plate member (12), a deflector member (48), and a spring (44). The plate member includes a first sheet supporting surface (14), and an end portion (16). The end portion includes a transition surface (18), which in cross section terminates at a transition edge (20). The deflector member is rotatably mounted on the plate member and includes a second sheet supporting surface (22). The deflector member includes in cross section a first finger portion (26) upon which the second surface is tapered to a point (28) which forms a lineal edge (27) that engages the transition surface. The deflector member also has a first rib (38) that engages a first slot (34). The rib includes a cam surface (43) that suitably engages a cam support surface of the slot to provide a fixed pivot point as the deflector member rotates. The spring is a three-way spring that acts on said deflector member and urges the lineal edge to maintain engagement with the transition surface, and urges the cam surface to be in engagement with the cam support surface of the slot.