baber/WOPTO huggingface dataset:
Patent CA-2218214-A1 (CA)
Inventor: CASHON JAMES P
IPC: C09K8/04
Filed: 1997-10-14
Abstract: Disclosed are low solids, high density fluids useful as drilling, workover, and completion fluids and the like in oil and gas well operations. The fluids comprise a brine having dissolved therein a zinc salt such as zinc bromide, and optionally one or more additional water soluble salts, a viscosifier which is a high surface area silica, a biopolymer viscosifier, a fluid loss control additive which is preferably a starch derivative, zinc carbonate, and, optionally, an alkaline buffer, a polar additive, and a bridging agent. It has been found that zinc carbonate will increase the low shear rate viscosity of fluids containing a zinc salt dissolved therein. Additionally, the combination of zinc carbonate and zinc oxide as the alkaline buffer provides fluids having increased thermal stability as indicated by the low shear rate viscosity of the fluids.
Patent CA-2218581-A1 (CA)
Title: Multifunction sensor and network sensor system
Inventor: ELLISON DAVID F
IPC: G08B13/193
Filed: 1997-10-17
Abstract: A multifunction sensor provides a plurality of parameter sensors in one sensor module which can interface with and control operation of one or more processor control systems in an occupied space networked environment such as a commercial building. The multifunction sensor comprises at least an occupancy sensor, an ambient light sensor, and a temperature sensor.  A common network communications and control processor is coupled to a common communication transceiver, and are shared in common by the occupancy sensor, the ambient light sensor and the temperature sensor, such that the multifunction sensor can interface with and control operation of one or more processor control systems.  A plurality of the multifunction sensors are placed at different locations throughout the building.  The multifunction network sensor system further comprises energy management and security controller systems, and a common data communication network which connects to the multifunction sensors and the controller systems to form a local operating network in the building. Each multifunction sensor is assigned a unique location address, and can transmit and receive data, including its own unique address, over the data communication network.
Patent CA-2218905-A1 (CA)
Title: Extensions to distributed mac protocols with collision avoidance using rts/cts exchanges
Inventor: HORTENSIUS PETER D
IPC: H04L29/06
Filed: 1997-07-08
Abstract: In a communications network having a plurality of stations and a shared common communications medium using a collision avoidance media access protocol for communication between the stations; in which medium access is granted to a pair of stations obtaining a successful reservation of the medium; the pair of stations comprising a requester station and a target station, the requester station comprises a primary station, and the target station comprises a secondary station; wherein the primary station coordinates communication to the secondary station; a method of maintaining  thereservation in the event a transmission of a frame of data is received from a third station not participating in the reservation comprising: each station participating in the reservation examining all received frames to determine the transmitter address thereof; ignoring frames transmitted from a non-participating station continuing with the reservation.
Patent CA-2219736-A1 (CA)
Title: Device for transdermal electrotransport delivery of fentanyl and sufentanil
Inventor: NOORDUIN HENK
IPC: A61N1/30
Filed: 1996-06-05
Abstract: The invention provides an improved electrotransport drug delivery system for analgesic drugs, namely fentanyl and sufentanil. The fentanyl/sufentanil is provided as a water-soluble halide salt (e.g., fentanyl hydrochloride), preferably contained in a hydrogel formulation for use in an electrotransport device (10). In accordance with the present invention, the donor electrode (22) of the electrotransport delivery device (10) is comprised of silver and the donor reservoir (26) is substantially free of supplementary chloride ion sources and contains a predetermined "excess" loading of fentanyl/sufentanil halide to prevent silver ion migration with attendant skin discoloration.
Patent CA-2221048-A1 (CA)
Title: Induction foil cap sealer
Inventor: HERZOG KENNETH J
IPC: B65B7/28
Filed: 1997-11-14
Abstract: An sealing system includes a frame, a ferrite core disposed within the frame, and a litz wire coil disposed proximate to the ferrite core for producing an electromagnetic field within the ferrite core, where the ferrite core and litz wire coil are adapted to direct the electromagnetic field toward a foil to seal an opening of a container with the foil.  The sealing head is air cooled within the induction sealing unit.
Patent CA-2225324-A1 (CA)
Title: Procede de production d'une composition detergente
Inventor: RANPURIA CHANDULAL KANTILAL
IPC: C11D11/00
Filed: 1996-06-22
Abstract: La présente invention concerne un procédé de production d'une composition détergente ou d'un composant dont la masse volumique en vrac est inférieure à 700 g/l. Ce procédé consiste à mélanger un composé de matière première particulaire avec un liant liquide dans un agitateur mélangeur ou un granulateur à effet d'agitation et à effet de découpe. En l'occurrence, la matière première contient un composant qui n'est pas un composé à action détergente, et dont la masse volumique en vrac n'excède pas 600 g/l.
Patent CA-2226183-A1 (CA)
Title: Single reactor bimodal hmw-hdpe film resin with improved bubble stability
Inventor: SCHREGENBERGER SANDRA DENISE
IPC: C08F10/02
Filed: 1996-05-02
Abstract: Single reactor bimodal MWD high molecular weight polyethylene film resin has improved bubble stability. The bimodal molecular weight distribution resin has low resin elasticity. Preferably the resin is made catalytically in one reactor. The preferred catalyst appears to control the properties of bubble stability and elasticity.
Patent CA-2226473-A1 (CA)
Inventor: TRINER JAMES E
IPC: G06T7/00
Filed: 1996-05-24
Abstract: La présente invention décrit un système d'inspection automatique de la configuration extérieure d'objets, comprenant une pluralité de caméras vidéo (32). Au moins l'une de ces caméras (32) est en noir et blanc et au moins l'une d'elles est en couleurs. Une lumière stroboscopique éclaire un spécimen (22) disposé dans une zone à spécimens (24) sur laquelle toutes les caméras (32) sont centrées. Le stroboscope permet à chaque caméra (32) de saisir une image fixe du spécimen (22). Les caméras en noir et blanc (32) saisissent des images qui permettent de déterminer si la configuration extérieure de l´article est acceptable. La (les) caméra(s) en couleurs (30) saisit (saisissent) une image qui permet de déterminer si la coloration du spécimen (22) est acceptable. Les spécimens (22) seront rejetés sélectivement sur la base des images ainsi obtenues. Le système s'avère particulièrement utile pour l'inspection de récipients pour boissons (22) et leur étiquetage associé.
Patent CA-2226723-A1 (CA)
Title: Pulse shaping for multicarrier modulation
Inventor: BRISMARK LARS GUSTAV
IPC: H04J1/00
Filed: 1996-07-03
Abstract: A method and system for data transmission in an orthogonal frequency division multiplexed (OFDM) system is provided. In the invention each of a plurality of data symbols C k, having a symbol period T, are modulated (404) onto one of a plurality of subcarriers comprising a first data signal. The first data signal is then multiplied (406) by a pulse-shaping function over the period T to generate a second data signal. The second data signal is then modulated (412) and transmit-ted on a system carrier over a communications channel (414) of the OFDM system.
Patent CA-2226808-A1 (CA)
Title: Counterbalance mechanism for vertical opening door
Inventor: FOUCAULT PIERRE-LOUIS
IPC: E05F1/14
Filed: 1998-01-12
Abstract: A counterbalance mechanism for a sectional garage door includes an elongated shaft mounted above the door opening and supporting spaced apart cable drums connected to respective cables which are connected at one end to the door for exerting a  counterbalance  force thereon.   Opposed torsion springs are connected to the cable drums at one end, respectively, and  to  respective  hub  members  which  are  axially slidable on but nonrotatable with respect to the shaft.  The cable drums are provided with detachable bushing members for engagement with the support brackets.  The shaft is connected to a non-reversible worm gear drive at one end.   The worm gear drive may be actuated to selectively vary the torsional deflection of the counterbalance springs by rotating the worm and a ring gear meshed therewith.  The worm gear drive may be detachably mounted on  one  or  the  other  of  shaft  support brackets  and a  lock plate  is  supported on the  shaft and engageable with a bracket to prevent rotation of the shaft when the drive mechanism is removed.  The door guide members are engaged with coil compression springs for centering the door between its guide tracks and to minimize skewing of the door during opening and closing movement.
Patent CA-2227928-A1 (CA)
Title: Method of producing a homogeneous catalyst for fuels
Inventor: KIEF HORST
IPC: C10L1/18
Filed: 1996-07-25
Abstract: The proposed method of producing a homogeneous catalyst for fuels involves adding acetone or homologues of acetone to the fuel and enriching the fuel with carbonyl compounds, in particular glyoxal or polyglyoxal, by oxidation with O3 or O2/O3 mixtures. Enrichment takes place preferably in the presence of heterogeneous catalysts with oxidising properties. The heterogeneous catalysts which can be used are the metals iron, manganese, copper, cerium, molybdenum, tungsten, vanadium, bismuth, titanium, rhodium, platinum and palladium, or their oxides, sulphides, phosphates or mixtures. The application also concerns a fuel containing a homogeneous catalyst produced by this method.
Patent CA-2227962-A1 (CA)
Inventor: ROJNIK MIROSLAV
IPC: B65D35/02
Filed: 1995-07-27
Abstract: A preferably transparent or translucent, rigid or semi-rigid plastic packaging tube (1), of which at least one end (11) is sealed with at least two opposite consecutive permanent folds (13, 14) in the previously flattened end (11), is disclosed. An apparatus for the integrated shaping of packaging tubes, and a shaping method therefor, are also disclosed.
Patent CA-2232966-A1 (CA)
Title: Joint assembly comprising a deforming element
Inventor: SUTHERLAND TERRANCE WILLIAM
IPC: A63B59/12
Filed: 1996-09-26
Abstract: The invention relates to an improved joint assembly comprising a deforming element that is compressed to secure a first member into the recess of a second member. Preferably the deforming element comprises angular projections and is made from a relatively soft material which allows for its deformation. The joint of the invention has the advantage of not requiring any heat or tool and is particularly useful for attaching a hockey stick blade to a hockey stick handle without the need of adhesives or other types of mechanical connectors. The invention also relates to a hockey stick blade and to a hockey stick incorporating the deforming element of the present invention.
Patent CA-2234662-A1 (CA)
Title: Method and apparatus for using the control channel in telecommunications systems for voice dialing
Inventor: WONG CHI
IPC: H04M3/42
Filed: 1998-04-14
Abstract: A voice-dialing apparatus and method extracts semantic features from a speech signal and transmits a set of semantic feature characteristics over a telecommunication control channel to a remote speech recognition processor. Once received, the remote speech recognition processor uses the feature set to retrieve a name and number corresponding to the audio signal received from the user and to automatically dial the number for the user.
Patent CA-2234731-A1 (CA)
Inventor: ZHENG QUN Y
IPC: C07D493/18
Filed: 1996-06-27
Abstract: Novel artemisinin dimers of structure (IV) which possess anticancer activity.
Patent CA-2240713-A1 (CA)
Title: Free machining stainless steel and components for automotive fuel and exhaust systems made therefrom
Inventor: MCMANN FRED W
IPC: C22C38/00
Filed: 1996-12-18
Abstract: A ferritic stainless steel alloy is disclosed having a unique combination of machinability, cold-formability, weldability, and corrosion resistance. The disclosed alloy has the following weight percent composition: Carbon 0.08 max.  wt.%, Manganese 1.00 max. wt.%, Silicon 1.00 max. wt.%, Phosphorus 0.045 max.  wt.%, Sulfur 0.030-0.30 wt.%, Chromium 10.5-11.75 wt.%, Molybdenum 0.50 max.  wt.%, Copper 0.50 max. wt.%, Nickel 0.50 max. wt.%, Aluminum 0.10 max. wt.%, Columbium 10 x C to 0.80 wt.%. The balance is essentially iron. The novel alloy is particularly suited for components used in automotive fuel and exhaust systems. A number of such components made from the aforesaid alloy are also disclosed.
Patent CA-2240859-A1 (CA)
Title: Aqueous suspensions of mineral materials and their uses
Inventor: BLUM RENE VINZENZ
IPC: C09K23/00
Filed: 1998-07-17
Abstract: Aqueous suspensions of mineral substances for use in the paper industry containing as a dispersing agent and/or crushing aid a copolymer consisting of: a) at least one ethylenically unsaturated monomer having a carboxylic function, b) optionally at least one ethylenically unsaturated monomer having a sulphonic or phosphoric function of a mixture thereof, c) optionally, at least one ethylenically unsaturated monomer having no carboxylic function, d) at least one oxyalkylated, ethylenically unsaturated, surface-active monomer ending with a hydrophobic chain.      Uses thereof in paper manufacturing and in the manufacture of coating colours for paper.
Patent CA-2241249-A1 (CA)
Title: Image communication apparatus with protocol conversion
Inventor: SEKIGUCHI KIYONORI
IPC: H04N1/32
Filed: 1996-12-06
Abstract: An apparatus for facsimile transmission through a computer network, particularly the Internet, comprising the image processing unit (17) for converting facsimile data into image files that can be transferred over the Internet, and the format conversion unit (3) for generating electronic mail and registration files that can be sent over the Internet by using the image files and mail addresses.
Patent CA-2242561-A1 (CA)
Title: Offset lithographic printing process
Inventor: BABIJ HUGO
IPC: C09D11/02
Filed: 1997-03-13
Abstract: An offset lithographic printing process utilizing a water-based printing ink.  The process is conducted at a relative humidity of 75-100 % and preferably at a temperature of 10-30 °C. A useful water-based ink comprises water; a macromolecular binder which: (i) is optionally present and is of the type which is water-soluble, regardless of the pH of the water phase, (ii) is present and is of the type which is water-soluble only at a pre-determined pH value, or (iii) is optionally present and is an aqueous emulsion; a pigment; and a re-wetting agent. A nonionic surfactant may also be present in the ink.
Patent CA-2247433-A1 (CA)
Title: Articles d'etancheite portant un gel
Inventor: HAMMOND PHILIP JAMES
IPC: C09K3/10
Filed: 1997-03-20
Abstract: Profilé d'étanchéité portant un gel et comprenant un support en fil à filaments multiples portant un corps allongé de gel entourant plus de 50 %, de préférence plus de 75 %, et plutôt sensiblement la totalité du périmètre du support vu en section transversale, ledit support étant au moins partiellement composé de matériau polymère synthétique, de préférence des filaments de polyester (par exemple, polyéthylèneterephtalate) ou des filés en mélange de fibres discontinues de polyacrylonitrile et de fibres discontinues de polyamide, la proportion de polyamide étant, de préférence, d'au moins 30 %, plutôt 40-60 %, en poids desdits filés. Le gel est, de préférence, appliqué en fusion, particulièrement extrudé sous pression, autour du support à une température inférieure à la température de ramollissement d'au moins un élément du support, la catégorie sélectionnée de matériaux du support augmentant la facilité de traitement, la cohésion et l'aspect du profilé obtenu.
Patent CA-2251909-A1 (CA)
Inventor: KOIKE MASAHIRO
IPC: B32B27/18
Filed: 1997-04-16
Abstract: Disclosed is a film or panel having excellent near-infrared absorbability or, that is, excellent near-infrared shieldability, and having a high degree of visible ray transmittance and good color tone.      To produce the near-infrared-absorbing film or panel having good color tone while the near-infrared-absorbing dye to be therein is kept stable, the dye and the binder resin for the dye are specifically selected, and the production method is also specifically selected. In addition, for the purpose of producing the film or panel while the dye to be therein is kept stable and for the purpose of making the film or panel have additional functions such as electromagnetic radiation absorbability, the film or panel is made to have a multi-layered structure.
Patent CA-2253016-A1 (CA)
Inventor: FRASER COLIN G
IPC: F24F13/00
Filed: 1998-11-05
Abstract: The present invention relates to a system for replacing the water in an air humidifying device.  Through the use of the system only fresh water is delivered into the atmosphere by the humidifier.  The system is such that it can be retro-fitted into an existing humidifier.  In its broadest context, the present invention incudes a means for discharging a supply of water from the water pan of a humidifier and a discharge control means.  The discharge control means is such that water is discharged only under certain conditions.  Specifically, in one embodiment means are included to permit the discharge of water as part of a timed cycle.  In an alternative embodiment, the water is discharged when the mineral level of the water reaches a predetermined level.
Patent CA-2255683-A1 (CA)
Inventor: WALKER JOHN
IPC: C07K19/00
Filed: 1997-07-11
Abstract: The invention describes a method for selecting host cell mutants which are resis tant to expression system toxicity, comprising the steps of growing an expression system comprising host cells transformed with an expression vector, inducing the expression system such that a toxic effect is observed, and selecting viable cells in which the express ion vector continues to function. Cells thus obtained are useful for the expression of polypeptide gene products in microorganisms.
Patent CA-2256613-A1 (CA)
Title: Method and apparatus for deferred throwing of exceptions in c++
Inventor: CALLSEN CHRISTIAN J
IPC: G06F9/44
Filed: 1998-12-17
Abstract: Methods and apparatuses for deferring, or delaying, the throwing of exceptions are disclosed. In one aspect of the present invention, an exception is raised during an invocation of a first object within an object-based system. Theexception may be processed by catching the exception and making a first copy of the exception. Making the first copy of the exception includes storing the first copy of the exception in a dynamic memory. The first copy of the exception may then be processed by creating a runtime copy of the exception that is stored on an execution heap. The runtime copy of the exception may is then caught. The first copy of the exception is deleted from the dynamic memory, and the caught runtime copy of theexception is reprocessed. In one embodiment, processing the first copy of the exception includes throwing the first copy of the exception as a system exception. In such an embodiment, throwing the first copy of the exception as a system exception causes the runtime copy of the exception to be created.
Patent CA-2256626-A1 (CA)
Title: Ester co-production
Inventor: PACYNKO WITOLD FRANCISZEK
IPC: C07C67/08
Filed: 1998-03-24
Abstract: This invention relates to a process for the simultaneous co-production of ethyl acetate and n-butyl acetate, in a reaction of a mixture of ethanol and n-butanol with acetic acid in the liquid phase in the presence of an acidic catalyst using a series or reactor and distillation columns so as to recover substantially pure ethyl acetate and substantially pure n-butyl acetate. The process is capable of using relatively impure reactants and provides for removing some of the aldehyde type impurities by the use of resin guard beds.
Patent CA-2258466-A1 (CA)
Title: A portable power plumbing plunger
Inventor: RANKOVIC RADOSLAV SASHA
IPC: B08B9/02
Filed: 1999-01-14
Abstract: The portable power plunger is for unclogging blocked drains in sinks, toilets, bath tubs and the like. The plunger has a main body having a reciprocating pump with a removable attachment mounted at its outlet lower end which is adapted to cover intimately over the waste water drain of a sink, toilet, or bath tub. The drain may be unclogged by operating the pump to dislodge the blockage and to dispose of it down the sewer. The pump is provided with a substantial back flow preventor such that the dirty water in the drain would not back into the pump to contaminate the latter. An integral injector pipe is also provided on the plunger. The injector pipe extends into an interior compartment at the lower part of the housing between the back flow preventor and the outlet, and it is attached to a pneumatic pressure source or pressurized water supply.  The pneumatic pressure or pressurized water provides additional pressure to unclog the blockage in the drain or for drawing dirty water out from the drain.
Patent CA-2260118-A1 (CA)
Inventor: HUTCHISON RICHARD
IPC: B23K9/12
Filed: 1999-01-19
Abstract: A short circuit arc welding system is disclosed. The control scheme uses a current command signal to drive the output current. The command signal is comprised of a long-term current command that sets the long-term current command level and a real-time or short-by-short current command. Arc voltage feedback is used to determine if the desired arc length is present and to adjust the long-term command. The-short-by-short current command is derived from real-time arc current feedback and is used to control the burn-off rate by an instantaneous, or short-by-short, adjustment of the current command. A function of the time derivative of arc power, less the time derivative of arc current, is used to detect, in real time, when the short is about to clear. A stop algorithm is employed that monitors the arc on a short-by-short basis. When the process is ending a very low current level is provided to avoid forming a ball. However, if a short is created, (indicated by a drop in arc voltage) after the low current level, a burst of energy is provided to clear of burn off the short. After the short is cleared, very low current is again provided to avoid forming a large ball. This is repeated until the wire stops and the process ends.
Patent CA-2263066-A1 (CA)
Inventor: HUTCHINS THOMAS GOODSELL
IPC: B65G15/30
Filed: 1996-08-23
Abstract: A conveyor belt (10) contains at least one integrated circuit transponder (30) which, upon interrogation by an external radio signal, transmits identification information in digitally encoded form. The transponder (30) has a generally planar, circular antenna (36A) surrounding a printed circuit board to which an integrated circuit is attached. The transponder may be encased in a rigid epoxy material to protect the structure from damage during use. Transponders placed adjacent splices (60, 62, 64) in a splice segment provide non-contact means of locating and monitoring the repair.
Patent CA-2263810-A1 (CA)
Inventor: BARDHAN BIBHUTI BHUSAN
IPC: G08B25/08
Filed: 1999-02-22
Abstract: There are security systems that are installed and continuously monitored remotely, for a periodic and/or an initial charge, by commercial security firms using the wired telephone system. In the present invention, the said periodic charges for such monitoring of the property are avoided by the property/manager/minder themselves doing the said monitoring with the help of a wired telephone or a wireless cellular phone or a pager or any other such suitable telecommunication system.