baber/WOPTO huggingface dataset:
Patent CA-2217155-C (CA)
Inventor: MONSORNO RICHARD
IPC: H01G4/12
Filed: 1996-03-22
Granted: 2002-08-20
Abstract: A capacitor (10) includes a planar electrode layer (12) which is mounted between a pair of dielectric layers (14, 16). The electrode layer (12) generally is centered with respect to the dielectric layers (14, 16), and on e of the dielectric layers has a pair of spaced-apart leads (18, 20). The electrode layer (12) is buried within the dielectric layers (14, 16) on whic h the leads are mounted, and the leads (18, 20) allow the development of a selected value of capacitance between the leads (18, 20).
Patent CA-2219037-C (CA)
Inventor: ISRANI VIJAYA S
IPC: G09B29/00
Filed: 1997-10-23
Granted: 2004-10-12
Abstract: An improved method and system that provides for a data access interface layer in a navigation system. The navigation system is of the type that includes a navigation application software program that provides navigating features to a user of the system and a geographic database stored on a computer-readable storage medium wherein the geographical database includes information relating to the geographical region about which the navigation system provides the navigation features to the user. The data access interface layer is preferably stored in the navigation system as a library of software functions. The data access interface layer operates in conjunction with the navigation system application software. The data access interface layer isolates the navigation application software from the geographic data which are stored on the storage medium. The data access interface layer intercepts requests by the navigation application software for geographic data. The data access interface layer retrieves geographic data from the storage medium and converts the data into a format usable by the navigation application software. The data access interface layer also provides for memory management that facilitates accessing and using geographic data from the particular storage medium quickly and efficiently. By recognizing that different media types have different physical formats, the data access interface layer accommodates and isolates the differences so that the portions of the data access interface layer that interact with the navigation application software can be generic.
Patent CA-2219801-C (CA)
Title: Bipolar electrosurgical scissors
Inventor: RICHARDSON THEODORE A
IPC: A61B18/12
Filed: 1997-10-31
Granted: 2000-12-26
Abstract: An electrosurgical instrument, such as a scissors, in which the handle and blade members are of a conventional construction.          Each blade member supports a detachable cartridge member made of an insulating material and supporting at least one electrode.   The cartridge members do not interfere with the cutting engagement of the blade members.  Each cartridge member can also permit relative movement between its electrode and associated cutting edge from a first position in which the electrodes are between the cutting edges (when the blades are open) to a second position in which each electrode is behind its respective cutting edge (as the blades are closed).
Patent CA-2221845-C (CA)
Inventor: BOSI-GOLDBERG MARINA
IPC: H03H17/02
Filed: 1997-03-17
Granted: 2004-06-08
Abstract: An efficient implementation of oddly-stacked critically-sampled single-sideband analysis/synthesis filter banks is achieved by application of a set of functions to time-domain and frequency-domain values before and after transformation. An implementation of an oddly-stacked Time Domain Aliasing Cancellation transform that permits the length of the transformation to be adaptively selected is disclosed.
Patent CA-2224729-C (CA)
Title: Force sensitive scale and dual sensor load cell for use therewith
Inventor: JOHNSON THOMAS H
IPC: G01L1/26
Filed: 1996-06-11
Granted: 2008-04-01
Abstract: A force sensitive scale and dual sensor load cells for use therewith isolate, measure, and reject out residual rejected effects from the output of the scale. By isolating residual rejected effects, the overall accuracy of the scale may be improved, and the scale may be made substantially insensitive to the position of an object on the scale. In addition, where a scale includes multipleload cells coupled in parallel to a load receiving member and spaced apart in the direction of the force vector, the outputs of the load cells may be effectively scaled to cancel out frictional effects inherent in the scale.
Patent CA-2230882-C (CA)
Title: Intelligent control of aluminium reduction cells using predictive and pattern recognition techniques
Inventor: MEGHLAOUI ABDELHAMID
IPC: G05B13/02
Filed: 1998-03-02
Granted: 2004-08-17
Abstract: A neural control logic scheme based on prediction and pattern recognition techniques is used to control electrochemical processes such as aluminum electrolytic cells.  The predictive capacity of feedforward neural networks is used to predict the future values of decision variables to be used by the cell's control logic, enabling the control logic to apply anticipated actions to cells at different states, thus avoiding anode effects and improving cell stability. The pattern-recognition capacity of LVQ-type neural networks is used to provide a closed-loop control structure to the feeding of the cell as a function of cell resistance, alumina concentration and cell state. The closed-loop control structure enables the cell to operate at a near-optimal regime regardless of cell state.
Patent CA-2231907-C (CA)
Title: Hydraulic system using an improved antiwear hydraulic fluid
Inventor: BROWN STUART H
IPC: C10N40/08
Filed: 1998-03-12
Granted: 2007-07-31
Abstract: A hydraulic system containing a piston-type pump having wear surfaces containing copper or a copper alloy, and, optionally, a vane-type pump having wear surfaces containing steel, uses an antiwear hydraulic fluid having an oil of lubricating viscosity and minor amounts of zinc dithiophosphate and a wear moderating agent. The wear moderating agent can be aliphatic polyol esters, boric acid derivatives of aliphatic polyol esters, aliphatic amines, aliphatic polyamines, aliphatic imidazolines, or mixtures of any combination thereof. The aliphatic groups of the wear moderating agent are substantially straight- chained, and the wear moderating agent contains at least ten carbon atoms.
Patent CA-2232983-C (CA)
Title: Braking device for trolley
Inventor: LUO CHUNG-I
IPC: B62B9/08
Filed: 1998-03-25
Granted: 2001-02-27
Abstract: The present invention relates to a braking device for a trolley of the type which is provided with four mounting brackets and each of which is mounted with a caster socket thereof. Each caster socket is rotationally mounted with a caster. The trolley frame is further provided with a pair of hand grips at both sides, respectively, for moving the trolley forward by exerting a forward force to the trolley through the hand grips. The braking assembly which is mounted at the hand grip includes a housing which is fixedly attached to the hand grip. A pulling rod is pivotally mounted at one end of the housing. A cable is fixedly connected to the other end of the pulling rod. The pulling rod is provided with a first recess, a second recess and a boss. The housing is pivotally mounted with a braking handle which is provided with a biasing tab and a positioning tab. When the braking handle is pushed downward the biasing tab will be engaged in the second recess, or the positioning tab of the braking handle may press against the boss of the pulling rod such that the pulling rod is pivoted upward and while the cable is also pulled and the free end of the braking lever is moved downward to bias the braking shoe against the caster to brake it. When the biasing tab of the braking handle is engaged in the first recess of the pulling rod, the cable is released and the caster is also released from the braking shoe of the braking lever for free rotation.
Patent CA-2233461-C (CA)
Title: Disposal method for fuel oil and crude oil spills
Inventor: KASHIHARA HIDECHIYO
IPC: C09K3/32
Filed: 1998-03-27
Granted: 2005-09-20
Abstract: A method for easily decomposing viscous, solidified spilled fuel oil or crude oil containing sea water and other disposal inhibiting substances is provided.      Titanium dioxide particles are added to viscous spilled fuel oil recovered in drums in a weight ratio of at least 0.2 to 1 times.      Fuel oil is specifically adsorbed by the adsorbent (S1) and the mixture can be suspended in water (S2). The suspension is filtered by a coarse filter to remove substances interfering with disposal of the oil (3). This filtrate is passed through a high performance filter (of sufficiently fine mesh to retain the adsorbent) so that the adsorbent is recovered, and sea water and other substances are discarded (S5).
Patent CA-2238869-C (CA)
Inventor: BROWN DAVID C
IPC: B29K105/04
Filed: 1998-05-28
Granted: 2009-03-10
Abstract: Containers are conveyed through an oven on a conveyor to cause a foamable material on each container to foam and become a heat insulative layer. The containers are supported on respective holders of the conveyor, which prevent the containers from contacting one another. Preferably, the holders support the containers loosely, to enable the containers to wobble relative to the holders under the influence of oven air currents and conveyor vibration. The holders thus do not make contact with any given point on their respective containers for a time period that is sufficient to enable the holders to draw enough heat away from the container to adversely affect the foaming operation. The containers are conveyed in single file, along a serpentine path through the oven.
Patent CA-2246089-C (CA)
Inventor: HAMALAINEN MATTI
IPC: C22B15/14
Filed: 1998-08-28
Granted: 2008-07-22
Abstract: The invention relates to a method for producing copper in a hydrometallurgical process from copper-bearing raw materials, such as sulfidic concentrates. The concentrate is leached in a leaching stage of several steps into a chloride-based solution. The copper-bearing solution obtained from this leaching is subjected to reduction and solution purification, whereafter the copper contained in the solution is precipitated as copper oxidule by means of alkali hydroxide. The alkali chloride solution formed in the production of copper oxidule is fed into chloride alkali electrolysis, where it is regenerated back into alkali hydroxide. The hydrogen generated in the electrolysis is used in the reduction of copper oxidule and in other reduction stages of the process. The formed chlorine is used in the leaching of the raw material. When necessary, the reduced copper that is in a granular or pulverous form is further subjected to melting and casting in order to produce commercial-grade copper.
Patent CA-2249238-C (CA)
Inventor: FORD STEVEN
IPC: A61M5/38
Filed: 1997-03-25
Granted: 2002-08-27
Abstract: A fluid gas removal drip chamber (10) for use for parenteral administration of fluids is disclosed. The drip chamber has a hydrophobic barrier (28) which extends into the interior of the drip chamber. The hydrophobic barrier preferably comprises at least a portion of a three-dimensional surface. In one embodiment, an inlet port (14) allows fluid to enter the drip chamber from the top of the drip chamber. By shaping the inlet port so that droplets of fluid are formed, a health care professional can monitor the fluid drip rate. In another embodiment, the hydrophobic barrier is configured so that little or no air space exists at the top of the drip chamber. The drip chamber includes means for venting air that is separated from the fluid within the chamber and, at the same time, preventing air from entering the chamber through the venting means. For certain applications, the drip chamber is provided with a hydrophobic filter (68) for filtering the fluid prior to exiting the drip chamber.
Patent CA-2252398-C (CA)
Inventor: LE-KHAC BI
IPC: C08G65/10
Filed: 1997-04-11
Granted: 2006-06-13
Abstract: Highyl active double metal cyanide (DMC) catalysts are disclosed. The catalysts comprise a DMC complex, and organic complexing agent, and from about 5 to about 80 wt.%, based on the amount of catalyst, of a polyether having a number average molecular weight less than about 500. The catalysts polymerize propylene oxide at a rate in excess of about 1 kg PO/g Co/min. at 100 ppm catalyst, based on the weight of finished polyether, at 105 °C. The catalysts, which are easy to prepare, give polyether polyols with exceptionally low unsaturation levels.
Patent CA-2253338-C (CA)
Title: Erythromycines 6-o substituees et leur procede de preparation
Inventor: OR YAT SUN
IPC: A61K31/70
Filed: 1997-03-21
Granted: 2007-05-08
Abstract: Composés antimicrobiens représentés par la formule: (II), (III), (IV), (V), (VI), (VII), (VIII) et (IX), ainsi que leurs sels, esters et promédicaments acceptables sur le plan pharmaceutique; compositions pharmaceutiques contenant ces composés; procédés servant à traiter des infections bactériennes au moyen de l'administration de ces composés et procédés de préparation de ces composés.
Patent CA-2257651-C (CA)
Inventor: MASUDA MINORU
IPC: H04N1/00
Filed: 1993-03-19
Granted: 2000-01-11
Abstract: A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.     Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.
Patent CA-2260552-C (CA)
Inventor: CHEN FENG-YUAN
IPC: E06B9/386
Filed: 1999-01-28
Granted: 2002-01-15
Abstract: A method of fabricating bamboo slats for bamboo blinds comprises the steps of : i) selecting bamboo wood from a bamboo cane, and cutting the selected bamboo wood into bamboo strips subject to a desired length and a desired width ; ii) removing the skin and joints from both sides of the bamboo strips, and boiling the bamboo strips in a hydrogen peroxide solution : iii) splicing the bamboo strips into bamboo slats of a desired thickness ; iv) coating the bamboo strips with a bonding glue, and using a pneumatic press to bond said bamboo strips ; v) splicing the bamboo plates into bamboo slats of a predetermined thickness, and air pressing the bamboo slats, and grinding the bamboo slats by blasting ; vi) coating the bamboo slats with a priming, and grinding the bamboo slats, and coating the bamboo slats with a face coating;  vii) punching holes on the bamboo slats for inserting pull cord, and assembling the pull cord into a Venetian blind to be a set of slats.
Patent CA-2262251-C (CA)
Title: Construction for ultra-thin orthotic
Inventor: BROWN DENNIS N
IPC: A61F5/14
Filed: 1999-02-22
Granted: 2007-09-11
Abstract: A thin orthotic insert having a rigid rearfoot plate and a flexible forefoot cushion which are joined together without requiring a separate top cover. A connection is formed by a slot at the forward edge of the plate which receives and holds the rearward edge of the cushion layer. The rearfoot plate may be formed as a laminated structure, with forward edges of the upper and lower laminate layers being separated to form the wall portions above and below the slot. To form the slot, a spacer is inserted between the edges of the layers and then withdrawn after molding/curing. Because the need for a top cushion is eliminated, very low thicknesses can be achieved, on the order of 1.5 mm. The device is particularly advantageous for use in women's high-heeled shoes, where interior volume is extremely limited.
Patent CA-2271452-C (CA)
Inventor: LIPOWSKI JOSEPH THADDEUS
IPC: H04B1/10
Filed: 1999-05-12
Granted: 2003-03-18
Abstract: Un système de désensibilisation de récepteur règle la sensibilité d'un récepteur en injectant un signal de désensibilisation se manifestant sous forme de bruit sur une voie de réception du récepteur, afin d'ajuster le niveau de puissance de bruit en fonction du niveau de puissance des signaux sur la voie de réception. Par exemple, une source de désensibilisation fournit un signal de désensibilisation se manifestant sous forme de bruit sur une voie de désensibilisation. Un atténuateur réglable sur la voie de désensibilisation règle le niveau de puissance du signal de désensibilisation afin de fournir un niveau de désensibilisation souhaité. La voie de désensibilisation est couplée à une voie de réception d'un récepteur, et le signal de désensibilisation est injecté dans la voie de réception. Le signal de désensibilisation désensibilise le récepteur en augmentant le niveau de puissance de bruit en fonction du niveau de puissance de signal sur la voie de réception. Le signal de désensibilisation peut être injecté dans la voie de réception après un amplificateur principal sur la voie de réception. En injectant le signal de désensibilisation après l'amplificateur, le système de désensibilisation réduit la contribution au facteur de bruit global qui se manifesterait si l'atténuation du signal avait lieu avant l'entrée dans l'amplificateur. Selon l'application, le signal de désensibilisation peut être injecté dans la voie de réception au niveau de la radiofréquence (RF), fréquence intermédiaire (FI) ou phases de bande de base du récepteur. Le signal de désensibilisation peut prendre diverses formes, comme un bruit à large bande, un signal en ondes entretenues, un signal modulé ou une séquence de bruit pseudo-aléatoire numérique.
Patent CA-2273345-C (CA)
Title: Method for increasing the bearing capacity of foundation soils for buildings
Inventor: CANTERI CARLO
IPC: C09K17/30
Filed: 1997-11-27
Granted: 2008-07-22
Abstract: A method for increasing the bearing capacity of foundation soils for buildin gs consisting in providing a plurality of holes (1) spaced from each other deep in the soil, and in injecting into the soil, through the holes (1), a substance (3) which expands as a consequence of a chemical reaction, with a potential increase in volume of at least five times the volume of the substance before expansion; the expansion of the substance (3) injected into the soil producing compaction of the contiguous soil.
Patent CA-2273735-C (CA)
Inventor: GOSSL NIKOLAUS
IPC: B27B1/00
Filed: 1999-06-04
Granted: 2003-11-25
Abstract: A method and an apparatus for dissecting logs in a sawing installation are disclosed. The installation comprises a reciprocally moving longitudinal conveyor for moving the logs reciprocally through a double band saw assembly utilizing band saw blades having sawing teeth both on a forward longitudinal edge and a rearward longitudinal edge thereof. As a consequence, the log is sawn both during the forward stroke and during the backward stroke of the reciprocally moving conveyor. Between subsequent strokes the band saw blades are displaced radially with respect to the conveying direction such that during each stroke the log first comes into contact with an outward band saw blade and then with an inward band saw blade, both relative to the log axis.
Patent CA-2274228-C (CA)
Inventor: LUONTAMA MATTI
IPC: D21G1/00
Filed: 1997-12-02
Granted: 2007-03-27
Abstract: A paper web to be dried is passed from the press section into a forward dryer section, in which the web is dried from the side of its bottom face in dryer groups that apply a normal single-wire draw. From the forward dryer section the paper web is passed into a finishing section, where it is coated/surface-sized by means of a coating/surface-sizing equipment, dried in an after-dryer, in which the paper web is dried in at least one dryer group that applies a normal single-wire draw. The paper web then is calendered and passed to a reeling station. Curling of the paper web is controlled by blowing moist air towards the web through a hood arranged with a dryer group.
Patent CA-2275087-C (CA)
Title: Power converter with low loss switching
Inventor: GEISSLER STEVEN
IPC: B23K9/073
Filed: 1999-06-17
Granted: 2004-11-02
Abstract: A welding power supply includes an input rectifier that receives sinusoidal or alternating line voltage and provides a rectified voltage. A pre-regulator provides a do bus and a convertor, such as a boost convertor, provides a welding output. The pre-regulator is an SVT (slow voltage transition) and an SCT (slow current transition) switched convertor. It may include a snubber circuit having a diode that is SVT switched. Also, the boost convertor may be SVT and SCT switched. The pre-regulator preferably includes a power factor correction circuit. The power source includes, in one embodiment, an inverter having a snubber circuit having a first switch in anti-parallel with a first diode, and a second switch in anti-parallel with a second diode.      The first switch and first diode are connected in series with the second switch and the second diode, and the first and second switches are connected in opposing directions, to form a switched snubber.
Patent CA-2279242-C (CA)
Inventor: KNUUTTILA HILKKA
IPC: C08F10/00
Filed: 1998-01-27
Granted: 2006-12-05
Abstract: L'invention concerne des compositions homogènes de catalyseurs de polymérisation des oléfines, que l'on prépare en mettant en contact a) un métallocène de formule générale (1) (CpYq)mMXnZo, dans laquelle Cp est un ligand cyclopentadiényle mono ou polysubstitué, condensé ou non condensé, homo (= iso) ou hétérocyclique, Y est un substituant au niveau du noyau cyclopentadiényle et un radical OR, SR, NR2, C(H ou R)= ou PR2; M est un métal de transition du groupe 4 de la classification périodique lié au ligand ou aux ligands Cp au moins sur un mode de liaison  eta <5>; X est lié à M et est hydrogène, halogène, un groupe hydrocarbyle C1-C8, un groupe hydrocarbyle C1-C8 renfermant un hétéroatome (O, S, N, P) ou un groupe tri-hydrocarbylsilyle C1-C8, ou bien deux X forment avec M une structure noyau métallocyclique C4-C20; Z est un atome ou un groupe de pontage entre deux ligands Cp ou bien entre un ligand Cp et le métal de transition M; q est compris entre 0 et 5; m est 1 ou 2; m.q est >/= 1; o est 0 ou 1; et n est 4-m-o, sauf quand il y a un pont Z entre deux ligands Cp, cas dans lequel n est 4-m; et b) un aluminoxane de formule générale (2) (OAlR')p (2 général), dans laquelle chaque R', identique ou différent, est un groupe alkyle C2-C10; et p est un entier compris entre 1 et 40.
Patent CA-2281649-C (CA)
Inventor: GREEN TODD CURTIS
IPC: C12N5/00
Filed: 1999-01-19
Granted: 2007-07-03
Abstract: A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a fluid chamber for separating the parti-cles from one another. Conduits are provided for flow-ing liquid carrying particles to the fluid chamber and for mixing the liquid with a diluting liquid. Structure is also provided for separating particles from the liquids after the particles are separated in the fluid chamber.  The disclosed methods include forming a saturated flu-idized bed of first particles to retain second particles in the fluid chamber. A diluting liquid having a density less than that of the particles is mixed with the liq-uid carrying particles to reduce overall density of sub-stances in the fluid chamber and thereby reduce Coriolis jetting of liquids in the fluid chamber.
Patent CA-2285596-C (CA)
Title: A spray boom and a method of spraying
Inventor: PATCHETT RAYMOND
IPC: B05B15/02
Filed: 1998-04-09
Granted: 2004-06-29
Abstract: A spray boom (1) is provided in which the spray boom (1) comprises one or more outlet nozzles (4) and one or more actuator means (9) each of which drives at least one outlet nozzle clearing means (10). The spray boom provides for the accurate dispensing of solutions or suspensions, preferably from a fixed wing aircraft for the aerial top-dressing of agricultural, horticultural and aquacultural areas.