baber/WOPTO huggingface dataset:
Patent CA-2197916-A1 (CA)
Title: Optical transmitter and transceiver module for wireless data transmission
Inventor: GFELLER FRITZ
IPC: H01L33/22
Filed: 1994-09-03
Abstract: Disclosed are optical transmitter and transceiver modules for data communication. Such a transceiver module comprises an array of light emitting diodes mounted on a mounting base being arranged in a regular and symmetrical manner in a dome-shaped housing.  This housing comprises diffusor means for source enlargement, In addition to the transmitter part consisting of said diodes, the transceiver module comprises a receiver. The receiver has four photodiodes arranged below the mounting base. These photodiodes are tilted and face in different directions to receive light from all around the module. The photodiodes are protected by a thin wire mesh which serves as Faraday cage to reduce electro magnetic interference. A  substrate for electronic circuitry in SMD-Technology is situated underneath the photodiodes.
Patent CA-2199070-A1 (CA)
Inventor: JOHNSTON JAMES DAVID
IPC: H04B1/66
Filed: 1997-03-04
Abstract: An audio coding technique which utilizes a signal adaptive switched filterbank having a first filterbank and a wavelet filterbank. The filterbank switches between the first filterbank and the wavelet filterbank to filter an input signal as a function of the stationarity of the input signal. The first filterbank is utilized to filter stationary signal components. The wavelet filterbank is utilized to filter non-stationary signal components (e.g., attacks).
Patent CA-2199391-A1 (CA)
Title: Skate blade and skate blade assembly
Inventor: OLIVIERI ICARO
IPC: A63C1/30
Filed: 1995-06-13
Abstract: A rigid reinforcement member (15) extends longitudinally along the neck portion (9) of the skate blade holder (4), to reduce stress and im-prove force transfer. The blade holder has a longitudinal slot (11) running along the bottom thereof to receive a blade or runner (10), which is secured in the slot. At least one rigid rein-forcement member runs along at least the neck portion, within the slot and above the runner, the slot being en-larged at the location of the reinforce-ment member(s) in order to accommo-date the member(s). Preferably, the reinforcement member is in one piece, including an upper web portion (16) and an integral channel (17) with a cross section in the form of inverted U-shape beneath the upper web por-tion. The arms of U-shape run along-side the runner, one on either side of the runner, and the base of the U--shape lies against the top of the runner and follows the shape thereof.    Prefer-ably, the rigid reinforcement member is of a reinforced plastic composite material, although a metal could also be used. The increased rigidity of the blade holder permits the use of a lighter runner, which may be provided by using a runner with a number of cut-out areas (26). The cutouts are arranged in a central area between a solid upper area of the runner and a solid lower area of the runner, in such a fashion that the remaining metal in the central area leaves a truss-like structure between the upper and lower areas, the truss-like structure serving to retain most of the rigidity of the runner.
Patent CA-2199427-A1 (CA)
Inventor: BAUMANN PETER
IPC: F28B1/00
Filed: 1997-03-07
Abstract: In a steam condenser in which the steam is condensed on tubes  (13)  through which cooling water flows and which are combined in separate banks  (20), each bank (20) being subdivided into compartments  (10) by supporting plates  (5)  arranged perpendicularly to the tubes  (13),  a residual-steam/inert-gas mixture is drawn out of a precooler (2) via orifices  (9)  into an air cooler (3). The residual steam is condensed in the air cooler (3) and the collecting condensate (23) flows off on account of a slope of the air-cooler bottom (21) through a recess  (18)  to an adjacent compartment  (10) having an air-cooler bottom  (21)  situated at a lower level.  In this case,  the condensate  (23)  flowing off from a compartment  (10)  situated at a higher level is retained at a retaining wall  (22)  on the air-cooler bottom  (21)  of the compartment  (10)  having the air-cooler  bottom  situated  at  the  lowest  level,  this retaining  wall  (22)  being  arranged  parallel  to  a supporting plate  (5).  Due to the retained condensate (23),  the recesses  (18)  in the supporting plates for the condensate flow from a compartment (10) situated at a higher level can be closed hydraulically in both a gas-tight and a steam-tight manner.
Patent CA-2199480-A1 (CA)
Inventor: PLISCHKE MANFED
IPC: B29C35/08
Filed: 1995-08-21
Abstract: In a method of manufacturing an absorbent structure (18) comprising a plurality of absorbent polymeric particles (16), a crosslinking agent (21) is reacted with the particles (16) such that regions of different degrees of crosslinking are formed. Absorbent structures (18) may be formed in this way comprising liquid-directing channels or other liquid-directing patterns in a layer of polymeric particles (16). The polymeric particles (16) may have varying degrees of interparticle crosslinking or may comprise varying degrees of surface crosslinking.
Patent CA-2200123-A1 (CA)
Title: Flexible Direct Signaling System
Inventor: CHEN KUO-WEI HERMAN
IPC: H04Q3/00
Filed: 1997-03-17
Abstract: A direct signaling system for providing system subscribers with the freedom to access service providers of their choice, regardless of their access network arrangement, with substantially minimum change to existing telecommunication software and architecture. The system provides a home interface unit and a call server that enables a subscriber to send signaling messages to and receive messages from the service providers of their choice. The home interface unit and call server execute state machines that provide specific details of system operation. The call server state machine triggers a state machine and thus operation of the service specific servers chosen by the subscriber.
Patent CA-2201993-A1 (CA)
Title: Catheter with marker sleeve
Inventor: HIJLKEMA LUCAS JOANNES
IPC: A61M25/01
Filed: 1997-04-07
Abstract: The invention relates to a catheter comprising a tube-like basic body with a proximal and a distal end, marking means made of a material opaque to X-radiation arranged close to the distal end. The marking means may be formed by at least one tube-like marker sleeve made of a plastic material opaque to X-radiation arranged around the basic body. At the distal end a balloon member may have been arranged and the marker sleeve may substantially extend over the effective length of the balloon member.
Patent CA-2202683-A1 (CA)
Title: Adaptive equaliser
Inventor: FERNANDEZ DURAN ALFONSO
IPC: H04L25/03
Filed: 1995-10-18
Abstract: Of particular application in equalising digital signals with analogue modulation, where use is made of a training sequence formed by a previously known sequence of symbols which is applied to said equaliser simultaneously with the demodulated signal present in the receiver. In this way a first estimate is made of the coefficients of the filter or filters of the equliser that compensate the linear distortions in the transmission channel. The training sequence (TS), before being used in the equaliser (CEQ), is first applied to a lowpass filter whose transfer function is the same as that of the premodulation filter employed in the modulator. This transfer function also incorporates distortion effects, both linear and non-linear, to which the data are subjected in the receive side when they have been demodulated prior to their detection or regeneration.
Patent CA-2202958-A1 (CA)
Title: Alkylenediamine derivative, anti-ulcer drug, and antibacterial drug
Inventor: UETAKE TOMOHIRO
IPC: A61P31/04
Filed: 1997-04-17
Abstract: An alkylenediamine derivative or a salt thereof expressed by the following formula 1;              (see fig. I) ...formula 1 wherein W represents a group expressed by the following formula 2 or formula 3;                           (see fig. II)           ...formula 2 (see fig. III)           ...formula 3 wherein each of R2 and R2 represents hydrogen atom, a lower alkoxy group, an alkenyloxy group, or a halogen atom; each of R3 and R3' represents methyl group, prenyl group, or geranyl group and when one  R3 and R3' is prenyl group or geranyl group, another is methyl group;          X represents oxygen atom or sulfur atom; R10 represents a lower alkyl group; and R11 represents a halogen atom; and wherein each of R4,R5, and R6 represents hydrogen atom or a lower alkyl group; Y represents a group expressed by -CH2-, -O-, or -N(R7)-,while R7 represents a lower alkyl group, an aryl group, a carbamoyl lower alkyl group, anaralkyl group, or a heterocyclic group having 5 to 9 members; and n represents  an integer of 1 to 6. The alkylenediamine derivative has an anti-ulcer effect or an antibacterial activity against Helicobacter pyroli to be available for prevention of cure of ulcers.
Patent CA-2203419-A1 (CA)
Title: Liquid separation by zeolite membranes
Inventor: BRATTON GRAHAM JOHN
IPC: B01D61/36
Filed: 1995-11-22
Abstract: Apparatus for removing water from water containing liquids in which a chamber with walls formed from a zeolite membrane can be immersed in the liquid mixture so that water passes into the interior of the chamber where it can be removed.
Patent CA-2203853-A1 (CA)
Title: Polymerization apparatus and method for controlling polymerization apparatus
Inventor: MERTINS JUERGEN
IPC: A61C13/06
Filed: 1997-04-28
Abstract: A polymerization apparatus includes a support plate for supporting a workpiece to be polymerized and a hood comprising a light source for guiding light to the workpiece such that the light impinges on at least two sides of the workpiece. The hood is liftable relative to the support plate so as to allow access to the workpiece when in a lifted position. A heat source for heating the workpiece is provided. A control device controls the function of the polymerization apparatus. A method for operating the polymerization apparatus includes the steps of heating the workpiece to a desired temperature after switching on the light source, maintaining the desired temperature for a desired polymerization cycle time period, and subsequently shutting down the light source and the heat source for a final polymerization cycle time period.
Patent CA-2204319-A1 (CA)
Title: Phosphorescent oxygen sensors
Inventor: NI YIZENG
IPC: C09K11/02
Filed: 1997-05-02
Abstract: Disclosed herein is a polymer material formed from a polymeric material having a backbone containing sulfur, nitrogen and phosphorous, the polymer material including therein a phosphorescent dye.
Patent CA-2204492-A1 (CA)
Inventor: TAYLOR KEITH A
IPC: C21D6/00
Filed: 1995-11-03
Abstract: Des articles laminés tels qu'une bande et/ou un feuillard laminé à chaud ou laminé à froid et recuit contiennent des quantités efficaces de vanadium dans des aciers à faible teneur en carbone afin d'obtenir un produit amélioré pouvant être durci à la cuisson et spécialement adapté à l'industrie automobile. L'utilisation de vanadium dans la chimie des alliages d'acier permet de contrôler les caractéristiques de durcissement à la cuisson, permet un recuit en solution à des températures plus basses au cours de sa fabrication et permet de spécifier une plage de composition facilitant la coulée à l'intérieur de limites recherchées et entraîne moins de variations dans les propriétés mécaniques finales. La composition de cet acier en, pourcentage pondéral, est la suivante: entre 0,0005 et 0,1 % de carbone; entre 0 et moins de 0,04 % d'azote, entre 0 et moins de 0,5 % d'un élément formant nitrure, entre 0 et 0,5 % d'aluminium, entre 0 et jusqu'à 2,5 % de manganèse, entre 0,005 et 0,6 % de vanadium, le reste étant du fer et les impuretés inévitables.
Patent CA-2204944-A1 (CA)
Title: Casing assembly for desiccant element housing
Inventor: MITSCH MATTHEW D
IPC: B01D53/26
Filed: 1997-05-09
Abstract: A casing assembly of a desiccant housing houses desiccant in an air dryer system.   The casing assembly includes a casing portion, a retainer, two porous plates, and a mechanism for compacting the desiccant.  The casing portion defines a channel between two sleeves that channels moisture-bearing air from an inlet of a head end out a tail end of the casing portion.  An inner sleeve defines a flow chamber between the ends.  The head end features an inner seat face that seals against an inner sealing flange of a main portion of the housing.  The head end features an outer seat face that connects to an outer sealing flange of the main portion.   The inlet communicates with a supply port of the main portion from which the moisture-bearing air is received during a drying mode of operation of the system.  An outlet of the head end communicates with a delivery port of the main portion out of which dried air is directed during the drying mode.   The retainer affixes to the inner sleeve within the flow chamber at the head end.   One plate abuts an interior side of the retainer within the flow chamber.          The other plate is slidably disposed within the flow chamber near the tail end.  The compacting means connects to an inner face  of  the  tail  end  and abuts  the  other  plate  thereby compacting the desiccant between the porous plates.  The tail end features an outer seat face that connects to a cover portion of the housing.
Patent CA-2205852-A1 (CA)
Inventor: RACHEL BERNARD W
IPC: H01K3/26
Filed: 1997-05-22
Abstract: This invention consists of an improved design and assembly process the for manufacture of a single ended quartz (SEQ) lamp having three-part leads and a prefocus base for projection applications.  This invention consists of a much simpler two-pin prefocus ceramic base SEQ lamp design that is made with fewer parts and is much easier and faster to assemble to enable much reduced labor and cost. Also, the ceramic base is smaller and exposes more of the quartz lamp seal to the surroundings to enable more effective cooling during lamp operation to prevent lamp failures from overheated seals.  Also, the ceramic base is designed for quick assembly with the coil correctly focused to the base.
Patent CA-2206593-A1 (CA)
Title: Centrifuge with annular filter
Inventor: HOLM NIELS ERIK
IPC: B04B1/02
Filed: 1995-12-01
Abstract: A device for separating components such as fibrin monomer from blood by centrifugation about a central axis comprising a first annular chamber (70) defined by an outer cylindrical wall (72) and an inner cylindrical wall (71) both walls being concentriclly accommodated about an axis of rotation, and by a top wall (73) and a bottom wall (74), where the bottom wall is formed by a piston (55) displlaceable within the first. The device furthermore comprises, a second chamber (75) below the first chamber and communicating with said first chamber through a first conduit (4) and being defined by the other cylindrical wall (72), the bottom wall (74) of the first chamber, and another bottom wall (76). The device also comprises a capsule (45) accommodated in the second chamber and including a plurality of compartments for receiving respective compositions promoting the separation.
Patent CA-2206626-A1 (CA)
Title: Use of catalytic membranes as interphase contactors for multiphase reactions
Inventor: SHU JUN
IPC: B01J19/24
Filed: 1997-05-30
Abstract: The invention is concerned with a method of conducting a gas-liquid or liquid-liquid reaction in the presence of a catalyst. The method of the invention comprises the steps of (a) providing a catalytic membrane comprising particles of the catalyst embedded in a polymer matrix; (b) contacting one side of the catalytic membrane with a first reagent in gaseous or liquid phase and the other side of the catalytic membrane with a second reagent in liquid phase; and (c) allowing the first and second reagents to permeate through the catalytic membrane and contact the catalyst particles. Reaction between the first and second reagents occurs within the catalytic membrane in the presence of the catalyst. When using a catalytic membrane comprising particles of zeolitic titanium-silicalite embedded in a matrix of pure or silane-modified polydimethylsiloxane, the method of the invention is particularly useful for carrying out the epoxidation of propylene with aqueous hydrogen peroxide and the oxygenation of various organic compounds with hydrogen peroxide.
Patent CA-2206634-A1 (CA)
Title: System for identifying stars, planets, deep sky objects and constellations
Inventor: LEE SAMUEL
IPC: G09B27/04
Filed: 1997-05-30
Abstract: A system to help a viewer find stars, planets, deep sky objects and constellations is disclosed. The system has a series of sky maps showing different views of the sky. One or more tables is provided for each map. The tables assist in corresponding the sky map to the sky. The tables have coordinates corresponding to times and dates and inform the viewer as to the direction in which he should look, the way in which the sky map should be oriented and whether the viewer should look high in the sky, low in the sky or in-between.
Patent CA-2207172-A1 (CA)
Inventor: MOORE CHRISTOPHER PETER
IPC: G03C5/395
Filed: 1997-06-06
Abstract: A method for inhibiting the growth of microorganisms in an aqueous medium comprises contacting the aqueous medium with a permeable body comprising material which interacts with the microorganisms.  Such interaction involves a change in the chemical structure of the material resulting from the action of one or more of the microorganisms.  The permeable body may take the form of a permeable bag containing plant fibres and may be used for the treatment of photoprocessor wash waters.
Patent CA-2208046-A1 (CA)
Inventor: BERKOWITZ NORBERT
IPC: E21B43/24
Filed: 1997-07-03
Abstract: An exploratory study of bitumen extraction from samples of oilsands from Alberta's Athabasca oil sands with supercritical water at 400dC and 14-24.5MPa was conducted by the Applicants.          Extract yields, which typically ran betwen 80-90% depended mainly on how efficiently the sands were swept by the supercritical water, but were substantially insensitive to sweep rates; and despite the high temperature surprisingly little toluene-insoluble preasphaltic and heavier material was generated.  Analyses of the extracts showed significant composition shifts to lower molecular weight moieties, it is concluded that near-critical water can promote a variety of thermally-driven homolytic and/or hydrolytic bond scissons.          In the above investigations we observed that conjoint use of such water and carbon monoxide can lead to significant upgrading of the precursor material during recovery.  We also found that the addition of a catalyst, such as iron oxide, accelerated the upgrading action.
Patent CA-2209651-A1 (CA)
Title: Novel initiator systems containing vanadium for the (co)polymerisation of isoolefins
Inventor: PLESCH PETER
IPC: C08F210/12
Filed: 1997-07-04
Abstract: This invention relates to an initiator system for the polymerisation of isoolefins having 4 to 16 carbon atoms, optionally with monomers polymerisable with iso-olefins, the system consisting of or one or more aromatic or heteroaromatic,poly-cyclic hydrocarbons and an aged, organic solution of vanadium tetrachloride, wherein the concentration of the vanadium tetrachloride is 0.01 mmol to 500 mmol per litre of solvent and the molar ratio of aged vanadium tetrachlorideto polycyclic hydrocarbons is in the range from 100:1 to 1:100.   It is possible by means of the initiator system according to the invention to produce polyisoolefins, in particular butyl rubbers, at relatively high temperatures with only a low gel content and of a sufficiently high molecular weight.
Patent CA-2211026-A1 (CA)
Title: Secret data storage device, secret data reading method, and control program storing medium
Inventor: YAMAMOTO HIROSHI
IPC: G07C9/00
Filed: 1996-11-27
Abstract: This invention relates a secret data storage device capable of setting password data which is easy for a specific user to memorize but is difficult for others to understand. A registration password data item composed of an arbitrary hieroglyphic data item or a combination of an arbitrary hieroglyphic data item and the color specifying data corresponding to the hieroglyphic is entered by selectively operating the hieroglyphic key 12b and color key 12d in the key input section 12. Similarly, using the color specifying data item and the like, a collation password data item is inputted. Then, it is determined whether or not the registration password data item coincides with the collation password data item entered this time. When it has been determined that they coincide with each other, the secret data stored in the secret data memory 17d is accessed and the accessed data appears on the display section 19.
Patent CA-2215407-A1 (CA)
Title: Boot for sporting activities
Inventor: MIOTTO ONORIO
IPC: A43B7/08
Filed: 1996-02-05
Abstract: A boot for sporting activities, characterised by comprising on one side a plurality of aeration through holes (7) forming engagement elements for an appendix (8) of a tractive element (6) fixed to a lever (5) mounted on the other side of the vamp.
Patent CA-2216257-A1 (CA)
Inventor: DECKER MARVIN CLEMENT
IPC: F25B15/00
Filed: 1997-09-23
Abstract: An over-concentration control system for use with an absorption machine of the type having either a single, double and triple effect cooling and heating cycle, which uses lithium bromide in solution with water as the operating liquid. The operating liquid being characterized by a concentration indicative of the quantity of lithium bromide dissolved in water, and by a phase diagram having a crystallization boundary that defines the combinations of concentration and temperature which correspond to a condition of saturation in the solution. A sensing means is provided at a predetermined location within the system which is responsive to the depth of said solution for generating a concentration signal indicative of the concentration of the liquid. A temperature sensor is also provided for generating a temperature signal indicative of the temperature of the liquid. Further means are provided which are responsive to the temperature signal and the concentration signal for calculating a representation of the absorption cycle of the machine which may be plotted on a phase diagram for the lithium bromide system. The representation includes a plurality of critical state points which are defined by predetermined respectivecombinations of concentration and temperature.  Means are also provided for comparing the actual concentration and temperature of the liquid to concentrations and temperatures which lie on the said crystallization boundary for lithium bromide for generating a difference signal. Control means are provided which are responsive to the magnitude of the difference signal for changing the operating state of said machine as necessary to prevent the liquid from reaching a combination of concentration and temperature that lies on the crystallization boundary.
Patent CA-2217072-A1 (CA)
Title: Exposure mode selecting device
Inventor: HIRAI ISAMU
IPC: G03B7/0805
Filed: 1997-10-01
Abstract: An exposure mode selecting device uses an A-position AE mode code, an M-position AE mode code, and a no-aperture-ring AE mode code, so that a proper exposure mode is selected.  When an interchangeable lens, having an aperture ring being set to an A-position, is attached to a camera body, the A-position AE mode code is set to 0 or 1 so that a program mode or a shutter speed priority mode can be selected.  If the aperture ring is set to one of the M-positions, the M-position AE mode code is set to 0, 1 or 2 so that an aperture priority mode, a manual mode or a bulb mode can be selected.  When an interchangeable lens having no aperture ring is attached to the camera body, the no-aperture-ring AE mode code is set to 0, 1, 2, 3 or 4 so that the program mode, the shutter speed priority mode, the aperture priority mode, the manual mode or the bulb mode can be selected.