baber/WOPTO huggingface dataset:
Patent CA-2210730-C (CA)
Title: Olefin polymerization
Inventor: HAWLEY GIL R
IPC: C08F4/642
Filed: 1997-07-17
Granted: 2001-09-11
Abstract: A catalyst system comprising an unbridged bis(2-aryltetrahydroindenyl) metallocene and a cocatalyst and its use in the polymerization of olefins, especially olefins having 3 or more carbon atoms.
Patent CA-2211301-C (CA)
Title: Dispositif de securite de reseau
Inventor: FRIEDMAN AHARON
IPC: H04L9/00
Filed: 1996-09-06
Granted: 2006-01-24
Abstract: L'invention a trait à un dispositif de sécurité de réseau (10) connecté entre un client protégé (12) et un réseau (100). Ce dispositif (10) négocie une clef de session avec n'importe quel autre client protégé. Toutes les communications entre les deux clients sont alors cryptées. Le dispositif selon l'invention s'auto-configure et verrouille de lui-même l'adresse IP (Protocole Internet) de son client (12). De la sorte, ce dernier est dans l'impossibilité de modifier son adresse IP, une fois celle-ci arrêtée, et, partant, ne peut émuler l'adresse IP d'un autre client. Lorsque l'hôte protégé transmet un paquet, le dispositif de sécurité (10) transforme, en la traduisant, l'adresse MAC du client en sa propre adresse MAC avant d'envoyer le paquet sur le réseau. Les paquets adressés à l'hôte contiennent l'adresse MAC du dispositif de sécurité. Celui-ci (10) transforme, en la traduisant, sa propre adresse MAC en adresse MAC du client (12) avant d'envoyer le paquet au client (12).
Patent CA-2211512-C (CA)
Title: Aneurysm closure device assembly
Inventor: CHEE URIEL HIRAM
IPC: A61F2/82
Filed: 1997-07-25
Granted: 2000-11-28
Abstract: This is an artificial occlusion kit for implanting and retaining an artificial occlusion device in a body space adjacent to and extending from a body lumen in a mammal. The includes at least one occlusion device and a retaining device for blocking the migration of the occlusion device out of the occlusion site. The retaining device is radially expandable at a retaining site adjacent the body space to be occluded to a diameter that is sufficient to engage the body lumen wall at the retaining site and form a barrier across the entrance zone of the body space to be occluded. The expanded retaining device also forms a lumen for flow through body lumen at the retaining site. At least one semi-penetrable space may also beprovided in the retaining device, allowing introduction of occlusion devices into the body space to be occluded, but preventing subsequent migration of the occlusion devices out of the body space. This semi-penetrable space may also be distensible to allow for delivery of occlusion devices therethrough. An introducer wire or a tapered-tip delivery catheter may be used to distend the distensible space and deliver the occlusion devices. The retaining device structure may further include a radiopaque metal wire wound into a primary helix over an inner core member made of a superelastic alloy of nickel and titanium. An implantable medical device assembly is also provided, having the structure described for theretaining device of the novel artificial occlusion kit, and which is attached to an elongate pusher via a sacrificial link that is electrolytically dissolvable.
Patent CA-2211936-C (CA)
Inventor: KISHIDA HAJIME
IPC: B41J2/175
Filed: 1997-07-30
Granted: 2002-06-25
Abstract: In a liquid container for an ink jet apparatus, provision is made of means which requires only one liquid preserving container for a single kind of liquid even when a plurality of ink jet recording elements are used and which can also be expected to improve the printing density and the printing speed.  For this purpose, a plurality of liquid supplying portions are provided in a liquid container having a liquid containing portion containing therein a sponge or the like for holding a single kind of liquid, and a liquid supplying port for supplying the liquid to ink jet recording elements.
Patent CA-2212939-C (CA)
Title: Method and apparatus for providing a softkey prompted user interface
Inventor: THOENI STEWART
IPC: G06F3/023
Filed: 1997-08-13
Granted: 2001-07-31
Abstract: A custom segment that includes softkey prompts which are included as icons in the display.  A number of keys are associated with the display.  Several functions are assigned to the same key.  The prompts that must be displayed for each function so that the operator or user of the device in which the display is used could easily operate the keys to obtain those functions were identified at the start of the device design effort.  The prompts were assigned to the keys in a logical manner so that in each state of each operating mode of the device an easy to understand set of prompts appear on the display.
Patent CA-2215267-C (CA)
Inventor: HARRIS RANDALL LEE
IPC: B65D71/00
Filed: 1996-11-22
Granted: 2006-01-24
Abstract: A carrier (10) for bottles. The handle area (22 24) of the top panel (14) is reinforced by a strap (26) connected at its ends to a dust flap (54, 62) in each end panel. The strap (26) is adhered to the top panel (14) and portion of the upper end panel flaps (18), while the portions extending to the dust flaps (54, 62) comprise gusset webs (79, 81).  During formation of a carrier from an erected flattened tube, the dust flaps (54, 62) connected to the reinforcing strap (26) are automatically closed upon raising the upper end panel flaps (18). This pulls the upper dust flap portions (64) in against the bottle necks, providing a tight fit between the bottles and the upper portions of the carrier (10).
Patent CA-2215966-C (CA)
Inventor: WATERREUS FRANCISCUS PETRUS MA
IPC: F23M9/00
Filed: 1996-03-07
Granted: 2003-06-17
Abstract: The invention relates to an arrangement for indirectly transferring heat to a flowing process medium, in particular for carrying out hydrocarbon steam reformation . The arrangement comprises a heating chamber (1), which can be heated from above by burners (2) arranged in a plurality of rows and through which run, on vertical longitudinal planes, a plurality of rows of heat exchanger tubes (3) through which the process medium flows. The combustion waste gases of the burners (2) [are extracted through] waste gas ducts (4), which are made of refractory-grade material and arranged on the bottom of th e heating chamber (1) parallel to one another and to the rows of the heat exchanger tubes (3) and have a substantially rectangular cross-section that is constant in the axial  direction. For the passage of waste gases from the heating chamber (1) into the interior of the  waste gas ducts (4), each waste gas duct (4) has openings (5) distributed on its longitudina l sides in the area near the bottom over its entire axial length.  According to the invention, to equalize the waste gas flow conditions, flow bodies are disposed inside the waste gas ducts (4) in the region of the lower part of t he rows of the heat exchanger tubes (3).
Patent CA-2229342-C (CA)
Title: Method and apparatus for degassing sulfur
Inventor: LAGAS JAN ADOLF
IPC: C01B17/04
Filed: 1996-09-16
Granted: 2009-12-08
Abstract: The invention relates to a method for removing hydrogen sulfide compounds fr om liquid sulfur by treating the liquid sulfur with a gas, wherein the liquid sulfur undergoes at least two separate treatments wi th a finely divided gas, and in each treatment use is made of a recirculation system with gas lift, while the possibility that a part of the liquid sulfur does not undergo any treatment is prevented practically completely.
Patent CA-2232313-C (CA)
Inventor: NORTRUP EDWARD H
IPC: H01J5/50
Filed: 1998-03-17
Granted: 2005-12-06
Abstract: A mounting assembly for a reflector lamp. The mounting assembly comprises a 0.050" diameter stainless steel rod that has been formed into a three-turn spiral. The spiral surrounds the inner jacket mount assembly of the reflector lamp, and fits into the neck region of the reflector. The lower leg of the spiral either takes the place of, or augments a "dummy" lead presently used in the inner jacket press, so that one or both fit into the reflector eyelet opening in the neck of the reflector. The opposite end of the spiral piece extends upwardly, and is connected to the upper lead of the Model No. PAR30L inner jacket mount assembly of the Model No. MPD70 lamp.
Patent CA-2233686-C (CA)
Title: Plasma panel exhibiting enhanced contrast
Inventor: WEBER LARRY F
IPC: G09G3/288
Filed: 1996-11-15
Granted: 2004-06-15
Abstract: A plasma panel, incorporating the invention, includes circuitry for applying row signals sequentially to a plurality of row electrodes. Each row signal includes a set-up period, an address period and a sustain period. A row signal during the set-up period includes both a positive-going ramp voltage and a negative-going ramp voltage, both ramp voltages causing a discharge of each pixel site along an associated row electrode. Both ramp voltages exhibit a slope that is set to assure that current flow through each pixel site remains in a positive resistance region of the gas's discharge characteristic, thus assuring a relatively constant voltage drop across the discharging gas, thus resulting in predictable wall voltage states. The set-up period thereby creates standardized wall potentials at each pixel site along each row electrode. Address circuitry applies, during the address period, data pulses to a plurality of column electrodes to enable selective discharge of the pixel sites in accordance with data pulses and in synchronism with the row signals.
Patent CA-2233738-C (CA)
Inventor: SVENSSON EINAR
IPC: B61B13/04
Filed: 1998-03-31
Granted: 2006-09-05
Abstract: A monorail system for passenger and light freight transportation provides a support structure with an essentially planar top surface and a stabilizer guide rail having a vertical web portion supporting an upwardly outwardly extending head. The head guides a vehicle along the top surface while conductors secured to the web portion transmit electrical current to the vehicle through a current collector secured to the vehicle. A portion of the stabilizer guide rail may be flexible providing a simple, inexpensive device for switching the vehicle between a plurality of tracks. The system operates equally well with a variety of vehicle propulsion and suspension systems including electro-mechanical, magnetic levitation or linear electric motors. In a preferred embodiment, the width of the support structure's top surface is approximately halts the width of the vehicle, and the side of the web portion opposite the side having the conductor includes control conduits that transmit command signals to the vehicle through a communications connector secured to the vehicle.
Patent CA-2237715-C (CA)
Title: Coextruded blocks and applications therefor
Inventor: BLANEY CAROL ANN
IPC: B01D39/20
Filed: 1996-11-20
Granted: 2005-03-15
Abstract: A coextruded block composite which includes a porous first block. The block is permeable to fluids and includes a granular component and a binder component. The block has interconnected pores therethrough having a first average diameter. The composite also includes a second block. In addition, at least one of the first block and the second block is continuous and at least a portion of the second block is contiguous with at least a portion of the first block. The second block also may be permeable to fluids. Additional blocks may be present, if desired. One or more of the blocks other than the first block may be a porous block having a granular component and a thermoplastic binder component. The coextruded block composite may be employed as a filter medium.
Patent CA-2237858-C (CA)
Inventor: MYERS JAN WILLEM MARINUS
IPC: F15B3/00
Filed: 1998-05-15
Granted: 2002-07-16
Abstract: An apparatus for the transmission of the pressure in the sterile area of a medical appliance to a non-sterile pressure gauge having a non-sterile connector of polyester/polyether-copolymer and a connector on the sterile side consisting of polycarbonate, wherein a sterility filter consisting of polytetrafluorethylene is provided between the two connectors and is positioned between two halves of the housing, said filter being supported by a backing, wherein the housing half on the sterile side comprises polycarbonate, the non-sterile half of the housing consists of polyester/polyether-copolymer and the two halves are connected by ultrasonic welding.
Patent CA-2240168-C (CA)
Title: Double worm system
Inventor: BECHER ULRICH
IPC: F04C18/16
Filed: 1996-07-08
Granted: 2007-11-27
Abstract: In prior art designs, single-flight cast double worms with angles of contact>  720° with large balance hollows at both ends and worm lengths of whole multiples of the operate in the medium rotation speed ranges (~3000 min-1) without imbalance. The desired use of special uncastable materials and the manufacturing complexity and the necessary dimensional stability even for extreme profile geometrics pose additional problems in balancing which are solved by the present invention. Here, it is possible, by varying the angle of contact of the worm and any balance hollows and/or by altering the contour of the worms in the medium engagement region, to reduce the size of the balance hollows, sometimes to "zero", and with the possible use of additional masses. Besides the advantage of simple raw component manufacture, worms balanced in this way also permit the use of special materials and extreme worm geometrics for fitting in pumps used in the chemical, medical and food sectors.
Patent CA-2240661-C (CA)
Title: Procede et appareil permettant de reduire la migration de reactifs dans une cellule electrochimique
Inventor: CAMPBELL STEPHEN A
IPC: H01M8/10
Filed: 1996-11-25
Granted: 2005-01-25
Abstract: Dans une cellule électrochimique, un catalyseur favorisant efficacement la réaction d'un réactif fourni à une électrode est disposé en une quantité suffisante dans l'espace interne de l'électrode pour qu'un réactif introduit au niveau d'une première surface principale de l'électrode soit presque entièrement entré en réaction lorsqu'il entre en contact avec la seconde surface principale. La migration du réactif d'une électrode à l'autre à travers l'électrolyte dans une cellule électrochimique est ainsi réduite.
Patent CA-2245370-C (CA)
Inventor: TOBIN JAMES
IPC: A61K9/26
Filed: 1998-08-19
Granted: 2009-07-28
Abstract: The invention relates to a medicament containing a standardized dry extract of horse chestnut seeds which is active against various types of edema and diseases of the venous circulatory system and to a process for manufacturing this medicament. The dry seed extract is processed to the form of pellets which can be coated to obtain sustained release of the agent. In this way satisfying therapeutical blood levels of the triterpene glycosides as agent are achieved. The finished medicament according to the invention can best be provided as hard gelatin capsule or matrix tablet containing the extract pellets.
Patent CA-2245547-C (CA)
Inventor: WAHL JOSEF
IPC: C07C69/734
Filed: 1997-02-17
Granted: 2005-07-26
Abstract: The invention concerns a process for preparing 2-(2-methylphenyl)-3-methoxyacrylic acid methylester (I) by formylating 2-methylphenylacetic acid methylester (II) in an inert solvent in the presence of a base, and subsequent methylation of the resultant enolate (III) in which M+ stands for an alkali metal cation.
Patent CA-2247407-C (CA)
Inventor: GARNETT JOHN EVERETT
IPC: G01F1/00
Filed: 1997-05-15
Granted: 2006-11-07
Abstract: In a flow measurement system (11) comprising a primary flow sensor (10) and a secondary electronic conversion apparatus for converting high and low fluid pressure signals from the primary flow sensor to an electronic signal output representative of fluid flow, a process for calibrating the system as an integral unit, comprising the steps of applying a plurality of known reference fluid flow rates to the primary flow sensor over the system's operative range of flow conditions, sensing the electrical output of the secondary electronic conversion apparatus for each of the said plurality of reference fluid flow rates, establishing a correction factor for each of said values of electrical output which will tend to linearize the relationship between fluid flow rate and the electrical output of the measuring system, and storing the correction factors in non-volatile memory in a microprocessor which is part of the secondary electronic conversion apparatus.
Patent CA-2251498-C (CA)
Inventor: STEELE JAMES R
IPC: B65G53/56
Filed: 1998-10-22
Granted: 2007-05-08
Abstract: A pneumatic switch having a wiper seal to inhibit material from escaping from a pneumatic conveying line during a switching process and to maintain the pneumatic conveying line in a closed condition to prevent contamination of the contents of the pneumatic conveying line and an inflatable seal to seal around a pneumatic conveying line with the pneumatic switch including a movable housing that is moveable with respect to a second pneumatic conveying line. The movable housing bearing is carried by a movable plate that allows one to position or reposition the pneumatic conveying line with respect to another conveying line to thereby divert material from one conveying line to another conveying line while an inflatable seal allows one to seal and reseal around the pneumatic conveying line. A drive mechanism with preset stops allows one to position or reposition the pneumatic conveying lines with respect to one another and a pneumatic bearing purge system inhibits the pneumatic switch from being jammed during the switching process.
Patent CA-2253822-C (CA)
Title: Cigarette pack
Inventor: THOMAS THEODORE ROLAND PHILIP
IPC: B65D85/10
Filed: 1997-05-02
Granted: 2004-04-06
Abstract: Packaging for smoking articles such as cigarettes in a rigid, hinged-lidded, carton (50) includes a sealed barrier layer enclosure (52) within the carton and having a line of separation aligned with a lid-end edge of an inner frame (56) of the carton so that the edge acts as a guide in shearing the barrier layer when opening the enclosure.
Patent CA-2255782-C (CA)
Title: Process for the preparation of lubricating base oils
Inventor: MOUREAUX PATRICK
IPC: B01J27/19
Filed: 1997-07-04
Granted: 2005-08-16
Abstract: Process for the preparation of lubricating base oils comprising the steps of (a) contacting a hydrocarbon oil feed in the presence of hydrogen in a first reaction zone with a catalyst comprising at least one Group VIB metal component and at least one non-noble Group VIII metal component supported on a refractory oxide carrier; (b) separating the effluent at elevated pressure into a gaseous fraction and a liquid fraction having a sulphur content of less than 1000 ppmw and a nitrogen content of less than 50 ppmw; (c) contacting the liquid fraction in the presence of hydrogen in a second reaction zone with at least a catalyst comprising a noble metal component supported on an amorphous refractory oxide carrier, and (d) recovering a lubricating base oil having a viscosity index of at least 80.
Patent CA-2258164-C (CA)
Inventor: BECCU RAINER
IPC: E21B21/10
Filed: 1997-06-18
Granted: 2005-10-04
Abstract: In a first aspect the invention relates to a drill-string-forming drill tube which includes a channel (15) intended for passing flushing liquid, inside of which there is a restriction which forms a seat (14) for a valve body (16) serving as a check valve. Said drill tube comprises, in addition to a partly spherical skittle member (17) for engagement in the seat (14), two or more tangentially separated blocking elements (21). The purpose of said elements is, when flushing liquid is fed from the valve seat towards a second restriction distanced therefrom, to stop the valve body against said second restriction without sealing thereagainst. Therefore, one and the same drill tube may be used for upwardly directed as well as downwardly directed drilling. In a second aspect, the invention relates to the valve body as such.
Patent CA-2258815-C (CA)
Inventor: PATE RAY H
IPC: C25C3/16
Filed: 1999-01-05
Granted: 2004-04-06
Abstract: A collector bar adapted for utilization with carbon during the production of molten metal, such as aluminum, under Hall Héroult applications includes a one-piece metallic extruded and/or drawn tube of relatively low electrical conductivity, such as steel or ferrous metal and a one-piece rod of relatively high electrical conductivity, such as copper. The tube is in encircling relationship to the rod and the rod and tube have surfaces in intimate surfaces-to-surface contact. The rod has an exterior profile exactly complementing an interior profile of the tube, or alternately the rod is relatively elongated and narrow and opposite longitudinal edges thereof are in intimate surface-to-surface contact with parallel opposite surfaces of the tube or opposite diagonal corners of the tube.
Patent CA-2260734-C (CA)
Inventor: SAITO MITSURU
IPC: B66B21/10
Filed: 1999-02-04
Granted: 2003-07-08
Abstract: The invention relates to a moving walk which can transport users in two opposite directions. A number of pallets 3 are arranged for circulation on looped rails 11 having two linear sectors 1A and 1B. Screw rods 16 are arranged on the linear sectors 1A and 1B of the rails 11.      The adjacent pallets 3 are interconnected through string members 22. The pallets 3 are moved in opposite directions on the linear sectors 1A and 1B, respectively. Each pallet 3 is inserted at its front end under a rear end of the preceding pallet 3 to provide a continuous walk surface so that many users are transported safely.
Patent CA-2265338-C (CA)
Title: Charging control apparatus, method of controlling the charging process, and power output apparatus
Inventor: KUNO HIROMICHI
IPC: H01M10/44
Filed: 1999-03-16
Granted: 2001-01-16
Abstract: There is a fear of excessively charging a secondary battery, which is subjected to repeated charge and discharge in a specific charged state that is lower than a full charge level. The technique of the present invention measures a temperature gradient of the secondary battery due to a charging process, determines that the charged state of the secondary battery is close to the full charge level at the time point when the temperature gradient abruptly increases, and stops the charging process based on the determination.      In the case where the secondary battery is repeatedly charged and discharged, the structure of the present invention corrects the observed temperature gradient. The concrete procedure of the correction subtracts a temperature rise due to a discharging process from the observed temperature gradient and thereby determines a temperature gradient relating to only the charging process. The correction utilizes a table that stores a relationship among the temperature rise due to the discharging process, the discharge current of the secondary battery, and the initial temperature of the secondary battery. This arrangement enables the secondary battery that is subjected to repeated charge and discharge to be adequately charged and thereby effectively prevents the secondary battery from being charged excessively. Another possible arrangement of the present invention carries out the determination of the charged state of the secondary battery based on the temperature gradient, only when the observed charge-discharge electric current shows that the secondary battery is being charged.
Patent CA-2271446-C (CA)
Title: Circuit arrangement for operating electrical lamps
Inventor: KIERMEIER THEODOR
IPC: H02M7/5383
Filed: 1999-05-12
Granted: 2009-07-14
Abstract: The invention relates to a circuit arrangement for operating electrical lamps which encompasses an invertor with oscillation build-up circuit (trigger generator), comprising diac and drive circuit. The drive circuit comprises a high-pass filter, in particular an RC high-pass filter. As a result, the trigger initiation is shifted closer to the zero crossing of the supply voltage. This means, in turn, that a more sinusoidal power supply current consumption with a smaller proportion of harmonics is obtained. In addition, more stable lamp operation is achieved in combination with power supply segment control dimmers.