baber/WOPTO huggingface dataset:
Patent CA-2275167-A1 (CA)
Title: The topical use of kappa opioid agonists to treat ocular pain
Inventor: GAMACHE DANIEL A
IPC: A61K31/135
Filed: 1997-12-11
Abstract: Compositions and methods for treating ocular pain are disclosed. In particular, the invention discloses compositions and methods of using kappa opioid agonists topically for the prevention or alleviation of ocular pain.
Patent CA-2275283-A1 (CA)
Title: System for improving the quality of a received radio signal
Inventor: DENT PAUL W
IPC: H04B1/715
Filed: 1997-12-15
Abstract: A delay spread is created in a digital radio signal to reduce the coherence bandwidth and facilitate frequency hopping to reduce the effect of fading losses within an enclosed propagation environment. The delay spread is introduced into the signal in several ways. One technique disclosed employs a transmitter (21) with two separate antennas (26, 27) one of which transmits the digital signal and the other of which transmits the same signal after a phase delay (25) has been introduced into the signal. The carrier frequency of the signals is hopped between at least two frequencies and the receiver processes the resulting signals. In another embodiment, a single transmit antenna (42) is used but the signal is received by two different antennas (43, 44) with the output signal from one of those antennas being phase delayed (45) before combining (46) it with the other prior to processing by the receiver circuitry (47). Phase delay (115) is also introduced at baseband into the signals to be transmitted by rotating the I and Q  components of the waveforms before modulation.
Patent CA-2278306-A1 (CA)
Title: Apparatus for the production of polyadducts of alkylene oxides with a combined liquid-in-gas and gas-in-liquid dispersion reactor
Inventor: FANELLI PASQUALE
IPC: C08G65/26
Filed: 1998-01-15
Abstract: The present invention relates to apparatus for the semi-continuous polymerisation of monomers with the use of a chain initiator. This apparatus is characterised in that it comprises a reactor (1) arranged with its axis substantially vertical and defining a lower, frustoconical part (III), an upper atomisation part (I) and an intermediate part (II), the reactor (1) having monomer and initiator inlet apertures (8, 10, 20, 21) at least one outlet aperture (12), a recycling duct (15) connected at one end to the outlet aperture (12) and at the other end to the upper part (I) through at least one atomiser (9), and a stirrer (25). The apparatus according to the invention has the particular advantage of being usable for reactions with any type of chain initiator and catalyst, whether they are solid, liquid or in suspension. The apparatus according to the invention may also be used in situations where there is risk of damage to the catalyst if this is pumped and in situations where the product obtained has a viscosity such that it cannot be recycled further.
Patent CA-2284756-A1 (CA)
Title: Detergent composition
Inventor: SHERRINGTON PAUL RICHARD
IPC: C11D17/04
Filed: 1998-04-02
Abstract: The invention relates to the use of a hydrotrope in a detergent composition, which comprises an anionic sulphate surfactant and which upon contact with water can form a viscous mixture of water and the particle, to reduce the viscosity of this mixture. The invention also relates to a granular detergent composition, comprising an anionic sulphate surfactant, present at a level of from 0.01 % to 95 % by weight of the composition, and a hydrotrope, present at a level of from 0.01 % to 60.0 % by weight of the composition. The invention also relates to a detergent particle comprising an anionic sulphate surfactant and a hydrotrope.
Patent CA-2285836-A1 (CA)
Title: Electric heater
Inventor: HUNG CHIN-PING
IPC: F24H3/00
Filed: 1999-10-13
Abstract: An electric heater made from extruded aluminum members. The electric heater is light, convenient for assembling, low cost and good in fast heating and is comprised of a receiving chamber, a plurality of heat sinking members, a plurality of electric heating pipes and a control portion. Wherein, the receiving chamber and heat sinking members are formed from extruded aluminum members, the heat sinking members are tidily arrayed at both sides of the receiving chamber. The electric heating pipes are placed in the receiving chamber. The control portion makes an electric power source drive the electric heating pipes to emit heat. Heat energy from the electric heating pipes is absorbed by a plurality of extruded aluminum plates defining the receiving chamber and is conducted fast to the heat sinking members and thereby exchanges heat by convection with cool air to rapidly raise the temperature of a room with the electric heater.
Patent CA-2288305-A1 (CA)
Inventor: KRIEGER DIETMAR
IPC: G01S3/78
Filed: 1999-11-08
Abstract: The present invention leverages a co-located communication component to provide remote management of a portable construction device. This provides a means to monitor and/or control the portable construction device from a central management site.  The communication component allows the central site, or another communication component, to interact with the portable construction device to retrieve information such as, for example, usage information and/or status information. The communication component also allows remote control of the devices such as, for example, remote power control and/or control of auxiliary devices that facilitate the functionality of the portable construction devices. The present invention can also incorporate global positioning systems and/or location indicating systems to facilitate in determining where the portable construction devices are located and/or when the devices are properly positioned. The systems themselves can be distributed to form a communication network with bi-directional communication capabilities.
Patent CA-2289209-A1 (CA)
Title: Cyclic ether vitamin d3 compounds, 1.alpha. (oh) 3-epi-vitamin d3 compounds and uses thereof
Inventor: REDDY SATYANARAYANA G
IPC: C07C401/00
Filed: 1998-05-15
Abstract: Novel cyclic ether vitamin D3 compounds having a cyclic ether side chain are disclosed. These compounds were first identified as metabolites of 3-epi vitamin D3 produced via a tissue-specific metabolic pathway which catalyzes the formation of a cyclic ether structure. Also disclosed are 1.alpha.(OH) 3-epi vitamin D3 compounds, which are produced via the epimerization of a 3-.beta.-hydroxyl group of 1 .alpha.(OH) vitamin D3 precursor in vivo. The vitamin D3 compounds of the present invention can be used as substitutes for natural and synthetic vitamin D3 compounds.
Patent CA-2289604-A1 (CA)
Inventor: DAVID JEFFREY ANDREW
IPC: F02F7/00
Filed: 1998-04-27
Abstract: The port-controlled two-stroke engine (1) comprises a combustion chamber (8), a crankcase (2) containing a combustible mixture, a cylinder (5), a piston (15) working in the cylinder (5), an intake duct (17) terminating in an intake port (18) in the cylinder wall for delivering the combustible mixture to the engine (1), and at least one flywheel rotatively mounted in the crankcase (2) about an axis of rotation. The rotation of the flywheel acts to drive the boundary layer of the combustible mixture immediately adjacent the periphery of the flywheel around the periphery. The engine (1) further comprises a transfer passage (21), extending from a first transfer port (22) in the cylinder wall adjacent the crankcase (2) to a second tranfer port (23) in the cylinder wall adjacent the combustion chamber (8), for conveying the combustible mixture from the crankcase (2) to the combustion chamber (8), the first transfer port (22) being substantially radially located with respect to the axis of rotation.
Patent CA-2292444-A1 (CA)
Inventor: HOERNSCHEMEYER WOLFGANG
IPC: B22D11/04
Filed: 1999-12-16
Abstract: An outer peripheral groove is provided at a distance from the top front end of the tube wall of a tubular mold. Into this peripheral groove grip, from opposing sides, U-shaped flanges having inner latching segments are inserted. The radial extension of the latching segments is smaller than the depth of the peripheral groove. Provided adjacently to the top front end is a circumferential recess, on which a reinforcement frame, which is able to be screw-coupled to the flanges and which braces against the flange of the water tank, and which can be located in position with an exact fit, while being sealed off. When the tubular mold is recalibrated, in particular using the explosive reforming method, the wall thickness is reduced, so that it is then necessary to rework the recess. One merely needs to put new reinforcement frame in place and screw it tightly in place via the flanges.
Patent CA-2294303-A1 (CA)
Inventor: PUTTKAMMER FRANK
IPC: G07D7/026
Filed: 1998-04-24
Abstract: The invention relates to an application and a method for checking documents. Hitherto, documents with optical diffraction security layers, specially holograms, were checked by costly optical monitoring technology. The entire monitoring process was so time-consuming that the monitoring process could not be applied to fast operating processing machines. Rapid monitoring (as an authentication characteristic) constitutes a further security step in evaluating effective optical diffraction security layers. The effective optical diffraction layer has a discontinuous metallizing layer and/or partially metal layers and/or areas of metal layers on various planes. Several methods of measurement exist to detect electrical conductivity. In practice, the contactless capacitive method of measurement has proven to be more practical.
Patent CA-2301103-A1 (CA)
Title: Titanium alloy based dispersion-strengthened composites
Inventor: ZHANG DELIANG
IPC: C22B5/04
Filed: 1998-08-19
Abstract: Titanium based metal matrix composites reinforced with ceramic particulate are well known, based on a blend of titanium alloy powders with ceramic powders, e.g., aluminium oxide powders, utilising a low energy ball milling process, followed by cold compacting and sintering to produce an appropriate composite.  This prior art process is disadvantaged from the point of view that there are virtually no particles in the blend below the micrometer size range, which lack has a deleterious effect on the subsequent processing of the composite.  This problem has been overcome by utilising dry high energy intensive milling in the process, which has the effect of providing the necessary number of small particles below the micrometer size range, as well as enhancing the reactivity of different particles with one another. In order to produce a titanium base alloy alumina metal matrix composite, titanium dioxide powder is blended with aluminium powder and subjected to dry high energy intensive milling until the separate particle phases achieve a size of 500 nanometres maximum. The intermediate powder product is then heated to form the titanium alloy/alumina metal matrix composite in which the ceramic particles have an average diameter of no more than 3 µ, and the oxide consists of more than 10 % and less than 60 % by volume fraction of the total composite. The composites have extensive application to tough and strong engineering alloys.
Patent CA-2301338-A1 (CA)
Inventor: PICCININ DAVIDE
IPC: G02B6/28
Filed: 2000-03-14
Abstract: Optical apparatus for selecting a predetermined item of information from a coherent optical signal carrying a set of digital data, the said optical apparatus comprising: - an input for the said coherent optical signal; - an optical-optical device connected to the said input for propagating the said coherent optical signal, the said optical-optical device being capable of generating a highly incoherent light having a predetermined coherence time and of transferring the said set of digital data carried by the said coherent optical signal to the said highly incoherent light in such a way as to provide at its output a highly incoherent optical signal carrying the said set of digital data, - an optical beam splitter for cloning the said highly incoherent optical signal into at least two highly incoherent optical signals, the said optical beam splitter having an input connected to the said optical-optical device and at least two outputs for the said at least two highly incoherent optical signals; - at least two optical delay lines connected to the said at least two outputs of the said optical beam splitter, the said at least two optical delay lines having different wavelengths from each other, the difference in length between the said at least two optical delay lines being such that the said at least two highly incoherent optical signals are delayed with respect to each other by a predetermined time, the said predetermined time being greater than the said predetermined coherence time of the said highly incoherent optical signal and being chosen in accordance with the said predetermined item of information which is to be selected;     - an optical coupler with at least two inputs connected to the said at least two optical delay lines, and one output, the said coupler being capable of recombining the said at least two highly incoherent optical signals into a single highly incoherent optical output signal having an intensity which is at a maximum in the presence of the said predetermined item of information which is to be selected.
Patent CA-2301528-A1 (CA)
Title: Support element in the form of a helical tension spring, applicable to hair or sheet material
Inventor: MARIA SONIA DI
IPC: A45D29/00
Filed: 1998-07-16
Abstract: The support means is applicable to hair (20) or to clothes and accessories which comprise sheet material (38), and which can also be applied in their turn to other objects. It comprises a helical tension spring (10; 30), between the turns of which hair (20) or the sheet material (38) can be retained, provided that through this latter one end (34) of the spring can be inserted (possibly by providing a suitable hole (40). The spring (30) can also act as a setting for a stone (36) by simply inserting the stone between its turns.
Patent CA-2302745-A1 (CA)
Title: Humidifier for a thermal support apparatus
Inventor: SPERAW FLOYD G
IPC: G05D23/19
Filed: 1998-09-09
Abstract: A humidifier module (54) is provided for a patient-support apparatus (20) which includes an opening (188) into which the module (54) is inserted, an electrical service connector (248), an air inlet port (198), and an air outlet port (196). The humidifier module (54) includes a water reservoir (70) configured to hold water, a heater (72) configured to heat the water, and an air chamber (89) with an air inlet port (238) and an air exhaust port for mating with the air inlet (198) and outlet ports of the patient-support apparatus (20). The humidifier module (54) also includes an electrical connector (122) for mating with the electrical service connector (298) of the patient-support apparatus (20) so that the patient-support apparatus (20) is provided with a humidified environment for a patient when the humidifier module (54) is inserted into the patient-support apparatus (20).
Patent CA-2304558-A1 (CA)
Inventor: HAMMARSTRAND KARIN
IPC: C11D3/20
Filed: 1998-09-15
Abstract: The present invention relates to a clear and stable, highly alkaline composition with controlled foaming, containing a high amount of surface active nonionic alkylene oxide adduct and a hexyl glycoside as a hydrotrope. This composition has a very good wetting and cleaning ability and can be used for cleaning of hard surfaces, in a mercerization process and for a cleaning, desizing or scouring process of fibres and fabrics.
Patent CA-2306061-A1 (CA)
Title: Ramp trailer for oil field tubulars
Inventor: EASTCOTT GARNET B
IPC: E21B19/15
Filed: 2000-04-18
Abstract: The trailer is operative to carry tubulars (drill collars or drill pipe) to a service rig and raise them to the level of the rig floor so that the rig elevators can latch onto them and stand them up in the derrick. The trailer has a roller-equipped carriage operative to move along tracks supported by and extending lengthwise of the trailer frame. An elongate flat bed is pivotally mounted at its front end to the trailer frame. The bed's rear end can be raised by a scissor hoist connected between the carriage and the rear end of the bed. The bed has grooves extending lengthwise thereof in which the tubulars sit. Thus the trailer can be backed up to within a few feet from the well. The rear end of the bed can be raised and the carriage and bed can be advanced rearwardly to bring the rear ends of the tubulars within reach of the rig elevators.
Patent CA-2306821-A1 (CA)
Inventor: COLTON LAURENCE J
IPC: H04Q9/00
Filed: 1998-09-29
Abstract: A communication system (10) transmits data between a plurality of locations. The communication system (10) is suitable for use by a utility provider to monitor a plurality of metering devices (16) from a remote location. The communication system (10) in accordance with use by a utility provider to monitor metering devices (16) comprises a control (12) for a least receiving data, a plurality of metering devices (16) arranged in a defined number of metering groups (24) for transmitting data associated with an amount of usage of a utility, and a defined number of concentrators (14), each operably connected to the control (12) and one metering group (24) for transmission of data between the control (12) and plurality of metering devices (16).
Patent CA-2307577-A1 (CA)
Title: Jet engine having radial turbine blades and flow-directing turbine manifolds
Inventor: HAMEDANI MOHAMMAD F
IPC: F01D1/02
Filed: 1998-10-28
Abstract: A jet aircraft engine having an improved turbine section with curved intake manifolds (102) to direct combustion gasses from the engine's combustion chamber (80) into the turbine housing (104) on a chordal flow path through the turbine generally perpendicular to the turbine rotor's axis of rotation. The turbine rotor has a number of radially extending turbine blades (116) for transmitting energy from the combustion gasses to shaft work to drive the engine's fan and compressor. Exhaust manifolds (126) can also be provided, directing the flow of exhaust gasses from the turbine to the engine's intake, and having noise and emissions control capability.
Patent CA-2309678-A1 (CA)
Title: Apparatus for checking an electrical drive
Inventor: HORBACH ROBERT
IPC: G01R31/00
Filed: 1998-10-29
Abstract: The invention relates to an apparatus for checking an electrical drive (15) and/or a mechanical device which is associated with the drive (15) and is, in particular, an accessory or an actuating element. In this case, the drive (15) and/or the mechanical device have/has an associated unit (1) which has connections (C, U, L, I). A diagnosis module (2) can be connected to the connections (C, U, L, I).      The invention provides for there to be a power supply device for the diagnosis module (2), which power supply device can be activated via at least one of the connections (Ul-Un) to the unit (1), or via an external signal.
Patent CA-2309810-A1 (CA)
Inventor: SELLINGER KARL-HEINZ
IPC: C07K1/20
Filed: 1998-12-03
Abstract: The invention relates to new EPO compositions with a high specific activity, characterised by a high proportion of N-acetyl-lactosamin units and/or tetra-antenna branches in the carbon hydrate structure. The invention also relates to a method for preparing such EPO products.
Patent CA-2309917-A1 (CA)
Title: Device and method for cooling casting belts
Inventor: WYATT-MAIR GAVIN F
IPC: B22D11/06
Filed: 1998-11-20
Abstract: Method and device for cooling belts of single or twin belt casters. The belt is cooled by a liquid which is contacted with the inner surface of the belt by a system of feed tubes (106) and collection tubes (108). Liquid is passed out the feed tube (106), into a channel (102) that communicates with the inner surface of the heated belt, the belt is cooled, and the liquid is removed through collection tubes (108) with a vacuum assist.
Patent CA-2311213-A1 (CA)
Inventor: OLSON GREGG D
IPC: F02M31/20
Filed: 2000-06-13
Abstract: Thermally induced failures at the tank/header joint of a charge air cooler are reduced by applying a body of elastomer 42,54, to the side 38,53 of the inlet side header 18 to which inlet tank 10 is welded. As a consequence, the elastomer 42 causes the header 18 to operate at a lower temperature than would otherwise be the case so that its thermal expansion approximates that of the tank 10 eliminating thermal stresses at their interface.
Patent CA-2313484-A1 (CA)
Title: Drive mechanism and torque sensor, and method for the production thereof
Inventor: BOHLEN RETO
IPC: G01L3/10
Filed: 1998-12-11
Abstract: The invention relates to an electric motor-driven supported muscular power driven drive mechanism in which the torque is measured by a torque sensor (35). Said sensor is centrally arranged in the area of the pedal axle (1) in the drive mechanism. The torque sensor is a magnetic pole type and has essentially band-shaped magnet poles (43, 53) which are displaced against one another by the torsion of a torsion section (39), whereby a magnetic value of the sensor (35) changes. As a result, a compact drive mechanism can be produced which permits a precise measurement of the muscular power torque. The sensor can be compactly constructed with the band-shaped magnet poles and can be easily produced.
Patent CA-2314723-A1 (CA)
Title: Optical waveguide structures
Inventor: BERINI PIERRE SIMON JOSEPH
IPC: G02B6/122
Filed: 2000-07-31
Abstract: The purely bound electromagnetic modes of propagation supported by symmetric waveguide structures comprised of a thin lossy metal film of finite width embedded in an infinite homogeneous dielectric have been characterized at optical wavelengths. The modes supported are divided into four families depending on the symmetry of their fields. In addition to the four fundamental modes that exist, numerous higher order ones are supported as well. A nomenclature suitable for identifying all modes is discussed. The dispersion of the modes with film thickness and width has been assessed and the effects of varying the background permittivity on the characteristics of the modes determined. The frequency dependency of one of the modes has been investigated. The higher order modes have a cut-off width, below which they are no longer propagated and some of the modes have a cut-off thickness.        One of the fundamental modes supported by the structure exhibits very interesting characteristics and is potentially quite useful. It evolves with decreasing film thickness and width towards the TEM wave supported by the background (an evolution similar to that exhibited by the sb mode in symmetric metal film slab waveguides), its losses and phase constant tending asymptotically towards those of the TEM wave. Attenuation values can be well below those of the sb mode supported by the corresponding metal film slab waveguide. Low mode power attenuation in the neighbourhood of 10 to 0.1 dB/cm is achievable at optical communications wavelengths, with even lower values being possible. Carefully selecting the film's thickness and width can make this mode the only long-ranging one supported. In addition, the mode can have a field distribution that renders it excitable using an end-fire approach.      The existence of this mode renders the finite-width metal film waveguide attractive for applications requiring short propagation distances and 2-D  field confinement in the transverse plane.