baber/WOPTO huggingface dataset:
Patent CA-2160334-A1 (CA)
Title: Method of dry separating fibers from paper making waste sludge and fiber product thereof
Inventor: LEUTHOLD DOUGLAS A
IPC: D21B1/00
Filed: 1995-10-11
Abstract: Provided are methods of dry recovering useable fiber from paper making sludge. In the methods, paper making sludge is dewatered and dried. The dewatered and dried sludge is then fiberized using a dry fiberizing machine into a fibrous material consisting of fibers and other material including fiber fines, clay, filler material and the like.  The fibers in the fibrous material are then separated out in a sifting process. The separated fibers are then ready for use in paper making without further processing. The fiber fines and filler material separated from the fibers is also collected and can be used as filler material in other composite material applications.
Patent CA-2160500-A1 (CA)
Title: PCI/ISA Bridge Having an Arrangement for Responding to PCI Bridge Address Parity Errors for Internal PCI Slaves in the PCI/ISA Bridge
Inventor: KULIK AMY
IPC: G06F13/36
Filed: 1995-10-13
Abstract: A peripheral controller interconnect/industry standard architecture (PCI/ISA)bridge is coupled between the PCI and ISA buses in a computer system. A PCI master in the system asserts address and address parity information on the PCI bus to initiate a master-slave transaction over the PCI bus. The bridge includes logic for comparing the address and the address parity information and generating an address parity error signal when there is an address parity error. The bridge also includes a PCI slave that receives the address parity error signal and generates a target-abort signal in response if the PCI slave has already claimed the address by asserting a device select signal. The bridge also includes logic that prevents the target-abort signal from propagating to the PCI bus whenever this logic receives both the address parity error signal and the device select signal. This allows the master to perform a master-abort and prevents the PCI slave on the bridge from performing a target-abort when there is an address parity error.
Patent CA-2162407-A1 (CA)
Title: A robust pitch estimation method and device for telephone speech
Inventor: SWAMINATHAN KUMAR
IPC: G10L25/90
Filed: 1995-11-08
Abstract: The present invention provides a pitch estimating method and device for accurately estimating the pitch of digitized speech signals, in spite of the presence of contaminants and distortions in telephone speech signals by (1) determining a set of pitch candidates to estimate a pitch of the digitized speech signal at each of a plurality of time instants, wherein series of these time instants define segments of the digitized speech signal; (2) constructing a pitch contour using a pitch candidate selected from each of the sets of pitch candidates determined in the first step; and (3) selecting a representative pitch estimate for the digitized speech signal segment from the set of pitch candidates comprising the pitch contour.
Patent CA-2162747-A1 (CA)
Inventor: PATEL KIRAN A
IPC: E04F13/08
Filed: 1995-11-14
Abstract: A plastic siding panel for forming a weather-resistant facade on an exterior wall of a building, and which is resistant to being dislodged from the building wall by relatively high apparent wind velocities, which are frequently encountered during transportation of a prefabricated building module. The panel comprises a contoured sheet of a plastic material typically having an ornamental facing, a generally flat nailhem strip at an upper end thereof, and an elongate rib located on the nailhem strip. The rib provides additional strength and rigidity which makes the plastic siding panels of the invention significantly more resistant to dislodgement from a building wall, upon exposure to relatively high winds, than conventional plastic siding panels.
Patent CA-2163100-A1 (CA)
Inventor: MIHARA DAVID R
IPC: H01M4/66
Filed: 1994-05-18
Abstract: A process is recited for plating elongated current collectors with indium. The current collectors have particular utility in alkaline electrochemical cells, particularly zinc/manganese dioxide alkaline cells containing "zero-added" mercury. The process of the invention involves electroplating conductive wire with indium and then drawing the plated wire to the lesser diameter. The drawn plated wire may then be cut to the desired lengths, typically in the shape of a nail, for use as current collectors within the alkaline cell.
Patent CA-2164987-A1 (CA)
Title: Pivotable and height-adjustable chair back rest assembly and blow-molded back rest therefor
Inventor: SCHULTZ CRAIG H
IPC: A47C7/44
Filed: 1994-06-06
Abstract: A chair is provided having a blow molded back rest (13) and a mechanism (20) which permits the back rest to pivot rearwardly and to be vertically adjusted. The mechanism has a carrier block (22) slidably engaging vertical slots (32) in a support member for vertical adjustment movement. The back rest is operatively attached to the carrier block so that the back rest can move in the vertical direction in unison with the carrier block or pivot rearwardly. The carrier block (22) has a curved integral spring (38) which engages the rear of the back rest to bias the back rest forward and to regulate the rearward pivoting motion as the user reclines. A handle (30) and latch member are pivotably connected to the carrier block to secure the attached back rest and carrier block in the desired vertical position.
Patent CA-2165657-A1 (CA)
Inventor: HENRY RAYMOND C JR
IPC: H04B7/26
Filed: 1995-03-21
Abstract: Procédé et appareil permettant d'allonger la durée de vie d'une pile d'un radiotéléphone cellulaire. Un radiotéléphone cellulaire est adapté pour fonctionner sur un mode de réception d'appel uniquement selon lequel ledit radiotéléphone peut recevoir des messages courts d'une station de base tout en préservant la durée de vie de la pile, du fait qu'il entre cycliquement dans un état de sommeil. Avant d'entrer en sommeil, le radiotéléphone informe la station de base qu'il n'est pas en mesure de recevoir des messages. Au bout d'un certain temps, le radiotéléphone se réveille et informe la station de base qu'il est prêt à recevoir des messages. Après réception de messages éventuels, le radiotéléphone répète ledit processus.
Patent CA-2166216-A1 (CA)
Title: Instant acoustic logging method for well bores
Inventor: MAGENDIE JEAN
IPC: G01V1/28
Filed: 1995-04-26
Abstract: An instant acoustic logging method for use in oil drilling, wherein a drill bit (16) arranged at one end of a drill string (12) and rotated in a well (18) is used as the acoustic source. The method comprises the steps of measuring, at the top (22) of the string (12), the vibration generated therein by the rotating drill bit (16), sensing acoustic signals from the drill bit (16) at at least one point (24, 26) on the ground (28) away from said drill bit (16), and processing the signals to provide data on the rock (32, 34, 36) around the well (18). Said method comprises an additional preliminary step of processing the vibration measured at the top (22) of the string (12) to determine the nature of the pilot signals from the drill bit (16), said data on the rock around the well being obtained by comparing the acoustic signals sensed on the ground (28) with the pilot signals from the drill bit (16).
Patent CA-2167645-A1 (CA)
Inventor: VAN ZYL IAN D
IPC: G05D9/12
Filed: 1996-01-19
Abstract: Reservoir flow or surge control systems frequently have large installed lifting or pumping capacity to deal with variations in either inflow or outflow, or both, and may form a part of a larger system of many such reservoirs (20, 120).  Taken together these reservoirs may have significant storage capacity.  In operation such systems are large consumers of electricity.  Electricity is often priced differently at different times of day. This invention employs this storage capacity to permit energy consumption to be shifted, at least in part, from periods of high electricity prices to periods of low electricity prices.  This is done by permitting a greater amount of material to collect during periods of expensive electricity, and then removing the material to a lower level during periods of less expensive electricity, or the reverse, depending on the nature of the system and the material in question.  Either an 'On - Off' or flow rate control method of pump control may be used.  The invention is illustrated by application to a wastewater pumping system (10).  In this case a control unit (70) works in conjunction with a pulse-echo acoustic level sensor (40) to control the operation of a battery of wastewater pumps (32-35) at wastewater pumping stations in an urban sewage system.
Patent CA-2169361-A1 (CA)
Title: Tooth whitening preparations
Inventor: GALLOPO ANDREW ROBERT
IPC: A61K8/67
Filed: 1994-08-12
Abstract: This invention relates to compositions for whitening teeth and dental prostheses using a sequestering agent and a reducing agent.
Patent CA-2169724-A1 (CA)
Inventor: JOHNSON WILLIAM A
IPC: H04R25/00
Filed: 1994-08-31
Abstract: L'invention concerne un système amplificateur (10) qui comprend un amplificateur à gain variable (10), un comparateur (17) et des amplificateurs à transconductance opérationnels (16) et (54). Le système amplificateur amplifie de manière variable des signaux électriques d'entrée, selon l'intensité de ces signaux, la variation de l'amplification pouvant être sélectionnée comme peut l'être effectivement la valeur maximale du signal de sortie.
Patent CA-2172530-A1 (CA)
Title: Laser cutting apparatus
Inventor: LAWSON WILLIAM E
IPC: B23K26/067
Filed: 1994-09-15
Abstract: An apparatus (10) for cutting a material (40) having a thickness, T, defined by the distance between a first surface (46) and a second surface (42) of the material (40). The apparatus (10) comprises an energy source (12) for providing a beam of energy (14), and directing mirrors for directing the beam of energy from the energy source to a first focal point (80) between the first and second surfaces (46, 42) of the material, and to a second focal point (98) between the first and second surfaces (46, 42) of the material (40). The first and second focal points (80, 98) are spaced apart from each other by a distance sufficient to cut through the entire thickness of the material (40).
Patent CA-2172892-A1 (CA)
Title: Non-blocking optical cross-connect structure for telecommunications network
Inventor: ALERFNESS RODNEY CLIFFORD
IPC: H04B10/27
Filed: 1996-03-28
Abstract: Wavelength  division  multiplexing,   spatial switching cross-connect structures which may be deployed as intermediate nodes of an all optical network to route any input channel on any source fiber to any destination fiber at any available wavelength to achieve full connectivity between the nodes of the network.  The non-blocking cross-connect   structure   comprises   a   wavelength   division demultiplexer for receiving multiple wavelength channels from each source fiber and for separating received channels into N wavelengths so that the wavelengths are organized according to a corresponding fiber of origin, a nonblocking optical   structure   for   spatially   and   independently rearranging the received wavelengths so that wavelengths having a common destination fiber are grouped together, and a wavelength division multiplexer for multiplexing together wavelengths having the same destination fiber.
Patent CA-2177538-A1 (CA)
Title: Apparatus, method and composition for preserving media in tip of solution dispenser
Inventor: TSAO FU-PAO
IPC: A61K9/08
Filed: 1996-05-28
Abstract: A container, composition and method for preserving treatment solutions, in which the composition includes weak and strong preservatives. The dispensing container includes media within a dispensing tip which media removes or alters the strong preservative, while allowing the weak preservative to inhibit microbial growth in the tip media. The dispensing container is especially useful in delivering to the ocular environment ophthalmic solutions which are essentially free of strong preservative which may cause patient discomfort. A dispensing container including a pH-preserved pilocarpine solution is disclosed in one embodiment.
Patent CA-2177794-A1 (CA)
Title: Wheel frame for a lift
Inventor: RICHTER UTZ
IPC: B66B11/04
Filed: 1996-05-30
Abstract: Wheel frame for a lift with own drive and running at guides, the wheel frame consisting of a cage-carrying frame (5, 12, 14, 16, 17, 18), the lower part (5, 12, 13, 14) of which contains the drive elements of drive unit (24, 3), driving wheels (1) and supporting wheels (2). The drive unit (24, 3), which is connected with the frame brackets (5) to be pivotally movable, is drawn towards the supporting wheel axle (12) by means of a contact pressure equipment in the form of a spring cylinder (8) for the production of the required contact pressure of the frictionwheels (1) and the supporting wheels (2) at the guide.
Patent CA-2178565-A1 (CA)
Inventor: GHERARDI LAURA
IPC: H01L39/24
Filed: 1996-06-07
Abstract: A process for producing a multifilamentary conductive tape of the type comprising a plurality of layers of a high-temperature superconducting material, incorporated in a mutually spaced relationship within a metal matrix, comprises the steps of: a) submitting to plastic deformation individual metal tubes including a precursor of a superconducting material, so as to obtain a plurality of elementary tapes structurally independent from one another; b) coupling the tapes so obtained by means of a heat treatment at a temperature and for a time sufficient to establish a stable mutual connection between said tapes. The multifilamentary tape so obtained or possibly the independent tapes, are then subjected to at least one sintering step, which may be followed by one or more cycles of plastic deformation and sintering. Advantageously, the process of the invention allows to increase the fill factor of the tape, with a corresponding increase in the critical current in superconductivity conditions.
Patent CA-2178687-A1 (CA)
Title: Pneumatic radial tire for heavy loads
Inventor: KISHI ATAO
IPC: B60C11/11
Filed: 1996-06-10
Abstract: A pneumatic radial tire for heavy loads, formed by providing the shoulder side edge portions of at least the second inner ribs or block rows counted from the outermost parts of a tread portion with narrow ribs of a height equal to that of the ribs or block rows via narrow grooves, and chambering the edge portions of these narrow ribs or inclining the depthwise axes of these narrow grooves from a tread surface toward a tread center.
Patent CA-2179511-A1 (CA)
Title: Graphics transfer article
Inventor: STEELMAN RONALD S
IPC: B44C1/10
Filed: 1995-01-06
Abstract: A graphics overlay composite comprising a premask layer (12) and a protective layer (14), wherein the premask layer provides handleability and the protective layer provides environmental protection of an imaged composite once the premask layer is removed. Optionally, the protective layer is deformable under lamination conditions such that the graphics overlay composite c m be laminated to am imaged receptor (45) to provide a graphics transfer article or a graphics applique (40) either of which can be laminated to an atypical receptor to form an image composite.
Patent CA-2180804-A1 (CA)
Title: Control system for switching loads on zero crossing
Inventor: CHELCUN DARRELL N
IPC: H01H9/56
Filed: 1996-07-09
Abstract: An AC load switching system predicts when a zero voltage cross-over condition will exist for purposes of switching an AC load to minimize inrush currents. Prediction is carried out by characterizing the switching devices, which preferably are electromechanical in nature, and determining closure and bounce delays associated with each type of switching device.  The system includes a processor, which could be a programmed microprocessor.  The processor stores characterization parameters for the load switching elements including closure delay time as well as bounce time intervals.  The processor energizes a switching element to close same at a time during the AC line cycle such that when the delay interval has passed and one half of the bounce interval has passed, the line voltage will be at a cross-over or zero voltage condition thereby resulting in minimal inrush current when the contacts have completely closed. Multi-phased loads can be switched at respective zero voltage cross-over conditions by adjusting load switching element energizing times by the delay of each of the respective phases. In a 60 hertz 3 phase system the delays are adjusted by 5.55 and 11.11 milliseconds from a reference phase.
Patent CA-2184454-A1 (CA)
Inventor: PARDIKES DENNIS G
IPC: B29B7/60
Filed: 1996-08-29
Abstract: A low cost dry polymer processing system has a housing containing submersible pump with a weir mounted on top of the housing and over an impeller chamber in the housing. The weir is a combination of a sleeve and a coaxial funnel with a top edge of the funnel that is level with respect to gravity to the extent that an inside wall of the funnel is wetted with an unbroken sheet of liquid. An electrolyte liquid rising in the sleeve overflows the top edge of the funnel in order to form a liquid sheet or curtain uniformly covering the inside wall of the funnel. The amount of liquid is limited so that the impeller is not hydraulically locked. Dry polymer is dropped through the funnel and into the eye of the impeller enclosed within the chamber which is drained via a port in the bottom of the pump housing. Fresh electrolyte is introduced into the housing at a level which is under the impeller. Thereafter, the mixture of the electrolyte and polymer is drained from the impeller compartment via the port. Before the mixture is completely discharged from the housing, another supply of fresh electrolyte is introduced into the draining mixture.
Patent CA-2185533-A1 (CA)
Inventor: BOWEN ROBERT L
IPC: B05D3/00
Filed: 1995-03-14
Abstract: Articles having the appearance of a naturally-occuring material such as wood or leather are formed by (1) providing a plurality of grooves in a surface of the article, (2) applying a surfactant to the article surface, (3) applying color solutions to the article surface. The article may be plastic, a solid substrate, a part or a film. A top coat (414) is preferably applied to the article surface. The movement of the applicator implement (214) for applying surfactant and color solutions is controlled (224) as is the saturator tool (216) for modifying and synthesizing the solutions on the part surfaces and permeating the solutions into the grooves.
Patent CA-2186600-A1 (CA)
Inventor: ILLIG CARL R
IPC: A61K49/06
Filed: 1995-04-12
Abstract: The present invention provides compounds of formula (I) wherein Z1 and Z2 each represent the atoms necessary to complete a monocyclic or poly-cyclic carbocyclic or heterocyclic ring system said Z1 and Z2 independently optionally substituted with R6 and R7, respectively; R1, R2, R3 and R4 are indepen-dently carboxyalkyl (C1-C2), -(CH2)n-C(=O)-NH-R8, or -(CH2)n-C(=O)-O-R8, R5 is carboxyalkyl (C1-C2); R6 and R7 are independently, hydrogen, benzyl, or benzyloxy, said benzyl or benzyloxy optionally substi-tuted with one, two or three substituents selected from the group consisting of amino, isocyanato (-N=C=O), isothiocyanato (-N=C=S), -NH-C(=O)-X or -NH-C(=S)-X; R8 is alkyl (C1-C20), -(CH2)m-Ar, or polyhydroxyalkyl (C1-C20); n is 1 or 2; m is 1 to 15; X is a targeting moiety; and Ar is phenyl optionally substituted with one, two or three substituents selected from the group consisting of amino, acylamino, hydroxy, alkyl (C1-C5) and halogen. The compounds of the invention can be chelated with a metal ion and used as contrast agents for magnetic resonance imaging and for other applications. The present invention also provides pharmaceutical compositions comprising a compound of the invention and a pharmaceutically acceptable carrier or diluent. The invention further provides a method of providing an image of an internal region of a patient comprising administering to a patient a compound of the invention and scanning the patient using magnetic resonance imaging to obtain visible images of the region.
Patent CA-2188943-A1 (CA)
Inventor: PEACEY JOHN G
IPC: C01F5/34
Filed: 1995-05-05
Abstract: In accordance with the present invention, there is now provided a process for the production of anhydrous magnesium chloride-containing melt or electrolyte containing very low levels of MgO, typically less than 0.2 % by weight MgO, directly from hydrated magnesium chloride feeds. More specifically, the process comprises the steps of a) feeding hydrated magnesium chloride in a furnace containing molten eletrolyte from a magnesium electrolysis cell to produce a melt, the temperature in the furnace being maintained between 450 and 650 °C; b) simultaneously injecting an anhydrous hydrogen chloride-containing gas into the melt in an amount below the stoichiometric requirement of 2 moles of HCl per mole of magnesium chloride produced from hydrated magnesium chloride, and agitating the melt to keep any magnesium oxide in suspension in the melt, to dehydrate the magnesium chloride and react with the MgO in the melt so that the melt contains not more than 0.2 % MgO on a 100 % magnesium chloride equivalent basis, to form an enriched anhydrous magnesium chloride containing melt.
Patent CA-2194495-A1 (CA)
Title: Frame component
Inventor: KRAUSE GUENTHER
IPC: E04G1/14
Filed: 1995-05-24
Abstract: Building scaffolding is usually either movable or fixed. Structures usable in both manners are usually too bulky and complicated and therefore not suitable for general use. The invention provides a solution because the platform stages (B) are interchangeable on the scaffolding frames (G) and the frame components (R) are fitted with a grid for the connectors of the other structural components involved. Thus despite the extensive use of light structural sections, the frame components are extraordinarily torsion resistant. The invention can be designed to be extensively modular.
Patent CA-2195349-A1 (CA)
Title: Lighting network system
Inventor: RYAN DAVID J C
IPC: H05B41/39
Filed: 1997-01-17
Abstract: A computer controlled dimming fluorescent lighting system is presented. This system is capable of responding to ambient light conditions by modulating the light output of dimming fluorescent lighting fixtures with respect to a userselected desired illumination level. Controls are incorporated to allow the use of a motion sensor to select between two user defined  illumination  levels. Controls are incorporated to allow the user to control the system operation by date and time of day in accordance with a user defined yearly schedule. The usermay also determine the desired illumination level by means of manually operated override controls.
Patent CA-2197446-A1 (CA)
Inventor: ROVINSKI BENJAMIN
IPC: G01N33/569
Filed: 1995-08-15
Abstract: Des particules rétroviriformes non infectieuses comportent un ensemble d'un produit génique <u>env</u>, un produit génique <u>pol</u> et un produit génique <u>gag</u> contiennent un marqueur antigénique non rétroviral ou non du type VIH. Dans un mode de réalisation, le marqueur comporte une séquence aminoacide contenant un épitope inséré dans le produit génique <u>gag</u> au niveau d'un site d'insertion à action antigénique. Dans un autre mode de réalisation, le marqueur comprend une séquence d'ancrage antigénique en liaison fonctionnelle avec le produit génique <u>env</u> remplaçant la fonction d'ancrage endogène. Dans un autre mode de réalisation, le marqueur comprend une modification d'une région immunodominante du produit génique <u>env</u> pour empêcher sensiblement la reconnaissance de cette région immunodominante. Les molécules d'acide nucléique correspondantes sont décrites. Ces particules rétroviriformes non infectieuses sont utiles pour l'administration in vivo, notamment chez l'homme, et pour le diagnostic. La présence du marqueur antigénique permet la reconnaissance du fait que l'antisérum contenant des anticorps antirétroviraux a été produit par exposition aux particules rétroviriformes non infectieuses lors de la recherche d'anticorps spécifiques du marqueur antigénique.