baber/WOPTO huggingface dataset:
Patent CA-2244044-A1 (CA)
Title: Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof
Inventor: JACOBS MARK ELLIOTT
IPC: H02M1/42
Filed: 1998-07-28
Abstract: For use with a power factor correction circuit, a current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator, coupled to a switch in the power factor correction circuit, that senses an electrical characteristic and a current passing through the power factor correction circuit and provides, in response thereto, a control signal to the switch and (2) a compensation circuit, coupled to an input of the power factor correction circuit, that provides a compensation signal to the modulator that is a function of a rectified line voltage provided to the input of the power factor correction circuit. The compensation signal causes the modulator to modify the control signal to reduce a total harmonic distortion (THD) of the power factor correction circuit.
Patent CA-2244899-A1 (CA)
Inventor: DOBIAS BOHUSLAV
IPC: B03D1/01
Filed: 1997-01-17
Abstract: The invention concerns the use of so-called quaternary esters as an aid for flotation of non-sulfidic minerals. It was discovered that the products of quaternary esterification of mono, di or trialkanolamine containing aliphatic carboxylic acids present good collector properties on the one hand, especially for the flotation of silicates, and on the other hand an exceptional biodegradability under both aerobic as well as anaerobic conditions.
Patent CA-2249212-A1 (CA)
Inventor: HATTERSLEY GARY
IPC: A61P19/04
Filed: 1997-03-17
Abstract: L'invention concerne des compositions de protéines présentant une activité induisant les chondrocytes et le tissu cartilagineux, ainsi qu'un procédé d'utilisation de ces compositions. Les compositions comprennent une ou plusieurs protéines de la superfamille de protéines du facteur transformant de croissance-.beta. (TGF-.beta.), notamment des protéines morphogénétiques osseuses BMP, en combinaison avec un polypeptide apparenté à l'hormone parathyroïdienne (PTHrP) ou un polypeptide de type PTH équivalent. Les compositions et les procédés sont utiles dans le traitement de l'arthrose, de défauts du cartilage et dans la réparation des tissus associés.
Patent CA-2254821-A1 (CA)
Title: Communications system with load sharing communications interface
Inventor: BRUECKHEIMER SIMON DANIEL
IPC: H04L12/56
Filed: 1998-11-30
Abstract: A number of narrow band networks are interconnected via a broad band network having a signalling protocol different from that or those of the narrow band networks. Calls between terminals associated with first and second narrow band networks are set up by the selection by a call server of a phantom trunk between the networks. This phantom trunk is used to relay the addresses of the two terminals to be connected. By recognising that two connection requests have been received at opposite ends of the same phantom trunk, a processor in the second network determines that a connection between the terminals via the broad band network is required. Selection of the phantom trunk and sending of address messages is effected via a selected one of a number of identical connection brokers coupled to the call server. The workload of the cal server is shared among the connection brokers coupled thereto.
Patent CA-2257131-A1 (CA)
Title: Magnesium dichloride-alcohol adducts, process for their preparation and catalyst components obtained therefrom
Inventor: SACCHETTI MARIO
IPC: B01J27/138
Filed: 1998-03-23
Abstract: The present invention relates to MgCl2.cndot.mROH.cndot.nH2O adducts, where R  is a C1-C10 alkyl, 2<=m<=4.2, 0<=n<=0.7, characterized by an X-ray diffraction spectrum in which, in the range of 2.THETA. diffraction angles between 5° and 15°, the three main diffraction lines are present at diffraction angles 2.theta. of 8.8 ~ 0.2°, 9.4 ~ 0.2° and 9.8 ~ 0.2°, the most intense diffraction lines being the one at 2.theta.=8.8 ~ 0.2°, the intensity of the other two diffraction lines being at least 0.2 times the intensity of the most intense diffraction line. Catalyst components obtained from the adducts of the present invention are capable to give catalysts for the polymerization of olefins characterized by enhanced activity and stereospecificity with respect to the catalysts prepared from the adducts of the prior art.
Patent CA-2257136-A1 (CA)
Title: Alkyloxyamino substituted fluorenones and their use as protein kinase c inhibitors
Inventor: CISKE FRED L
IPC: C07D263/10
Filed: 1997-04-24
Abstract: The present invention describes certain alkyloxyamino-substituted fluorenones which inhibit protein kinase C, as well as pharmaceutical compositions including these compounds and methods of using these compounds to control protein kinase C activity in mammals, including humans. More specifically, the present compounds are useful for the treatment of neoplastic disease states, disorders associated with abnormal blood flow (including hypertension, ischemia, atherosclerosis, coagulation disorders), and inflammatory diseases (including immune disorders, asthma, lung fibrosis, and psoriasis).
Patent CA-2257461-A1 (CA)
Title: Hearing aid with improved percentile estimator
Inventor: BAEKGAARD LARS
IPC: H04R25/00
Filed: 1996-12-14
Abstract: The invention relates to a hearing aid, preferably a programmable hearing aid, having at least one microphone (1), at least one signal processor with at least one channel, an output amplifier (9) and an output transducer (10), at least one of the channels containing a signal processing circuit (4) with at least one percentile estimator (6) for the continuous determination or calculation of at least one percentile value of the input signal from a continuous analysis and evaluation of the frequency and/or amplitude distribution of the input signal, whereby the percentile value(s) serve either directly or indirectly as control signals for controlling the gain and/or the frequency response of the electronic processing circuit, the percentile estimator (6) consisting essentially of a comparator stage (12) with two inputs and two outputs, the first input being directly or indirectly connected to the input of the hearing aid, its two outputs controlling a first control stage (13) the output signals of which control a first integrator (14), the output of which, directly or indirectly, conveys a control signal to the signal processing circuit (5) and the second input of the comparator stage.  The invention comprises at least a second control stage (16) connected to the first control stage (13), and at least one additional integrator (17) controlled by the second control stage (16), the output of which is connected to a further input of the second control stage (16) and to a multiplier stage (15) interconnected between the first control stage (13) and the first integrator (14).
Patent CA-2257517-A1 (CA)
Title: Liquid bleaching compositions with hydroperoxides
Inventor: SCIALLA STEFANO
IPC: A61K8/00
Filed: 1997-06-06
Abstract: Liquid compositions are described which are acidic and which comprise an alkyl hydroperoxide or an organomineral hydroperoxide. The compositions do not cause skin itching, unlike conventional peroxygen, and are useful for bleaching fabrics, carpets, toilets, dentures, teeth and hair.
Patent CA-2257707-A1 (CA)
Title: Curing of butyl rubber
Inventor: VON HELLENS CARL WALTER
IPC: C08L23/22
Filed: 1998-12-31
Abstract: Butyl rubber formulations cured with polycyclic phenol-formaldehyde resins having dimethylene ether bridges and methylene bridges, wherein the molar ratio of dimethylene ether bridges to methylene bridges is less than about 2.5:1, display improved heat ageing characteristics.
Patent CA-2257717-A1 (CA)
Title: Adjustable support bra and method of making
Inventor: MURRAY MICHAEL D
IPC: A41F15/00
Filed: 1999-01-05
Abstract: The present invention provides an adjustable underwire support bra especially suited fob larger breasted women. The bra is designed to allow a wearer to create their own most comfortable fit by independently adjusting inner and outer cup support straps. The bra is also designed with a centerpiece in which to embed the underwire to prevent the underwire from slipping or from poking through the fabric causing discomfort to the wearer and/or fabric wear.
Patent CA-2259181-A1 (CA)
Inventor: KRONENBERG STANLEY
IPC: G01T1/18
Filed: 1997-05-21
Abstract: A radiation sensor and/or imager is formed by sandwiching two materials (7, 1, 9) having different atomic numbers (Z) around a radiation detector (3, 5), such as scintillator or Geiger-Mueller type radiation counters, or solid state radiation detectors, such as those made of silicon. In one embodiment of the present invention, a thin layer of lead (1) is placed on one side of a Geiger-Mueller radiation counter (3, 5) and a layer of Lucite (7, 9) is disposed on the opposite side. By disposing a high Z material (1) on one side of a radiation counter (3, 5) and a low Z material (7, 9) on an opposite side of the radiation counter (3, 5), it is possible to detect the photo-Compton electrons emitted from the high or low Z material (7, 1, 9) in the forward or backward directions and the attenuation of the emitted electrons by the high Z  material (1). The present invention can detect radiation intensities down to background radiation levels.
Patent CA-2259808-A1 (CA)
Title: Frame with joining means for hanging christmas light bulb series
Inventor: WANG JUNG KUEI
IPC: F21V11/14
Filed: 1999-01-19
Abstract: The present invention relates to a frame structure with a joining mechanism for hanging a Christmas light bulb series.      It mainly provides an innovative frame structure that makes use of an engagement between the pins of a light bulb holder and the voids of the frame to secure the bulb elements of the light bulb series. The frame has slots disposed thereon and positioned in alignment with the light bulbs of the Christmas light bulb series so that the light beams of light bulbs can pass through these slots to show more attraction.
Patent CA-2260121-A1 (CA)
Inventor: RAMIREZ DANIEL
IPC: C07J1/00
Filed: 1997-07-11
Abstract: A process is disclosed for preparing 16.alpha.-hydroxy-estra-1,3,5(10)-triene derivatives having the general formula (I), in which R1 stands for a hydrogen atom, an alkyl group with maximum 4 carbon atoms, a benzyl group or an acyl group with maximum 8 carbon atoms; and X and Y represent together an oxo group or X stands for a hydroxyl group and Y for a hydrogen atom. This process is characterised in that an estra-1,3,5(10),16-tetraene derivative is converted by means of peracids into a 16.alpha.,17.alpha.-epoxide, which is split by means of mineral acids or converted by means of a reagent which supplies bromine cations into the corresponding 16.alpha.-bromine derivative, which is converted into the 16.beta.-bromine derivative. The bromine is replaced by an hydroxyl group and if required the thus obtained 16.alpha.-hydroxy-1,3,5(10)triene-17-one derivative is reduced by means of sodium hydroboron in the presence of a strong aqueous buffer solution with a pH value from 5 to 6.5 into the corresponding 16.alpha.,17.beta.-trihydroxy-estra-1,3,5(10)-triene derivative.
Patent CA-2262676-A1 (CA)
Title: Stereoselective deoxygenation reaction
Inventor: DOLLING ULF H
IPC: C07D405/12
Filed: 1997-08-08
Abstract: This invention relates to a key intermediate in the synthesis of an endothelin antagonist, the synthesis of this key intermediate and the synthesis of an endothelin antagonist using this intermediate in a stereoselective deoxygenation reaction.
Patent CA-2264237-A1 (CA)
Inventor: LANGENHAGEN ROLF-DIETER
IPC: C09K23/54
Filed: 1999-02-26
Abstract: The invention relates to the use of silicone-polyether copolymers of the formula I   (see fig. I) as surface-active substances in the production of HR polyurethane foams.
Patent CA-2267428-A1 (CA)
Title: Systeme d'entrainement pour portes d'ascenseur
Inventor: NAGEL HEINZ-DIETER
IPC: B66B13/12
Filed: 1997-09-16
Abstract: L'invention concerne un système d'entraînement (1) placé sur la porte (2) de la cabine, qui est représenté par une ligne continue en position de repos et par une ligne en pointillé en position de fonctionnement. Une flèche repérée par (Y) indique le sens de déplacement horizontal du système d'entraînement (1) dans l'axe Y, et une flèche repérée par (X) indique le sens de déplacement horizontal du système d'entraînement (1) dans l'axe X. Le mouvement X/Y du système d'entraînement (1) est produit à l'aide d'un actionneur et d'un mécanisme de déplacement. Sur une porte palière (3) est placée une came d'entraînement (4) sur laquelle prend appui le système d'entraînement (1). Des capteurs du système d'entraînement (1) mesurent la distance par rapport à la porte palière (3) et par rapport à la came d'entraînement (4). Un électroaimant du système d'entraînement (1) produit la force nécessaire à l'accouplement de la porte de cabine (2) avec la porte palière (3).
Patent CA-2267681-A1 (CA)
Title: Silicon carbide abrasive wheel
Inventor: SHELDON DAVID A
IPC: B24D3/18
Filed: 1997-10-01
Abstract: A vitreous bonded abrasive grinding wheel comprises silicon carbide abrasive grain, hollow ceramic spheres and a low temperature, high strength bond. The wheel has improved corner or profile holding characteristics and improved mechanical properties and is suitable for grinding non-ferrous materials.
Patent CA-2268071-A1 (CA)
Inventor: WANG SHYH-RONG
IPC: H04N7/14
Filed: 1997-08-28
Abstract: L'invention concerne une caméra (110, 110')) pouvant être connectée à un système de traitement (120, 120') via un connecteur externe (154) extérieur au boîtier du système de traitement. La caméra (110, 110') comprend un boîtier (100). Un dispositif d'imagerie (111) est disposé à l'intérieur du boîtier de la caméra (100), il convertit les images animées en un signal vidéo. Un circuit (115) de réduction de débit binaire est également disposé à l'intérieur du boîtier de la caméra (100) et connecté au dispositif d'imagerie (111). Le circuit (115) réducteur du débit binaire réduit un débit binaire du signal d'images animées de manière à produire un signal vidéo à débit binaire réduit présentant une largeur de bande inférieure à celle du signal vidéo, avant la réduction du débit binaire.
Patent CA-2277506-A1 (CA)
Title: Light screening composition containing a polysiloxane type uv-b screening agent and a benzimidazol type uv-b screening agent
Inventor: GONZENBACH HANS ULRICH
IPC: A61Q17/04
Filed: 1999-07-12
Abstract: The invention relates to a cosmetic light screening composition containing in an aqueous phase about 0.5 to 10 wt% of 2-phenylbenzimidazol-sulphonic acid or a salt thereof and at least one fatty phase, comprising about 1 to 30 wt% of a linear or cyclic polysiloxane compound of the general formula Ia or Ib,   wherein X signifies R or A;      A signifies a group of the formula IIa, IIb or IIc;    R signifies hydrogen, C1-6 alkyl or phenyl; R1 and R2 each independently signify hydrogen, hydroxy, C1-6-alkyl or C1-6-alkoxy;      R3     signifies C1-6-alkyl;      R4     signifies hydrogen or C1-6-alkyl;      R5 and R6 each independently signify hydrogen or C1-6-alkyl; r     has a value of from 0 to 250; s      has a value of from 0 to 20; r +s   has a value of at least 3; t      has a value of from 0 tol0; v      has a value of from 0 to 10; and v+t    has a value of at least 3; n      has a value from 1 to 6; with the proviso that in the case that is 0 at least one X is A.
Patent CA-2279216-A1 (CA)
Inventor: KOFOED HENRIK NOHR
IPC: A61G5/10
Filed: 1998-02-06
Abstract: A set of releasably interconnectable members for building up a chair for disabled persons is disclosed. The set comprises a frame, a lavatory or toilet seat to be mounted on the frame, a cover seat to be mounted so as to cover the lavatory seat, legs for supporting the frame, and wheels to be mounted on the frame or on the legs so as to support the chair. The set may comprise accessories, such as a lavatory bowl, arm, back or foot rest(s). A bag for transporting the set is disclosed.
Patent CA-2281750-A1 (CA)
Title: Compositions de revetement pour l'exterieur, durables, et resines polyester fonctionnelles et polyglycidylesters de celles-ci, utilisables dans ces compositions
Inventor: VAN GAALEN RONALD PETRUS CLEME
IPC: C09D167/00
Filed: 1998-02-20
Abstract: Selon l'invention, on obtient une résine polyester à fonctionnalité carboxylique tertiaire, en faisant réagir: a) au moins un composé A aliphatique comprenant deux groupes hydroxyles aliphatiques, lesquels peuvent représenter chacun indépendamment un groupe hydroxyle primaire ou secondaire et un groupe carboxyle tertiaire; b) éventuellement au moins un composé B hydroxyle comprenant deux groupes hydroxyles aliphatiques, lesquels peuvent représenter chacun indépendamment un groupe hydroxyle primaire ou secondaire; c) au moins un composé C d'acide carboxylique cycloaliphatique comprenant deux groupes carboxyles aliphatiques secondaires ou un anhydride de ceux-ci; d) éventuellement, au moins un composé D d'acide dicarboxylique comprenant deux groupes carboxyles aliphatiques ou l'anhydride de ceux-ci; et e) éventuellement soit au moins un composé E comprenant un groupe hydroxyle primaire ou secondaire et le cas échéant un groupe carboxyle tertiaire, soit au moins un composé G d'acide monocarboxylique comprenant un groupe carboxyle primaire ou secondaire en même temps que des doses moléculaires équivalentes d'au moins un composé F choisi dans le groupe des composés A ou B, le rapport molaire des composés (A+B):(C+D):E:F:G étant de (X-1):X:K:L:M, où X se situe entre 2 et 14, K se situe entre 0 et 2, L se situe entre 0 et 2 et M se situe entre 0 et la valeur de L. On peut utiliser ces résines polyester avec un agent de durcissement approprié, afin de produire des revêtements en poudre, ou on peut les convertir en glycidylesters correspondants que l'on combine à l'agent de durcissement approprié pour obtenir des revêtements en poudre.
Patent CA-2287505-A1 (CA)
Title: Inhibitors of cellulolytic, xylanolytic and .beta.-glucanolytic enzymes
Inventor: DELCOUR JAN
IPC: A23L7/117
Filed: 1998-05-04
Abstract: The present invention concerns an inhibitor of xylanolytic and/or .beta.glucanolytic enzymes, method for obtaining the inhibitor, said inhibitor and processes for obtaining micro-organism, plant or plant material wherein the activity of the inhibitor according to the invention is increased or reduced and to the use of the inhibitor, the cited micro-organism, plant or plant material in a variety of processes and applications.
Patent CA-2287720-A1 (CA)
Inventor: GALLAGHER MARK
IPC: A45C13/26
Filed: 1999-10-28
Abstract: A selectively rotatable handle for luggage includes a grip and a base. The grip has a grip having a handle end and an opposite base end. The base is mountable to a piece of luggage. The base end is rotatably mounted to the base. Teeth on the base releasably engage opposed facing teeth on the base end. The opposed facing teeth are urged into interlocking engagement by a spring.
Patent CA-2291181-A1 (CA)
Title: Method and apparatus for leak testing
Inventor: LEHMANN MARTIN
IPC: G01M1/00
Filed: 1998-03-10
Abstract: For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component, the container is introduced in a test cavity (1) which is evacuated at least down to vapour pressure of that liquid component. The pressure in the surrounding of the container (9) and thus within test cavity (1) is monitored.  Monitoring is performed by a vacuum pressure sensor (7), whereas lowering pressure surrounding the container (9) is performed by a vacuum pump (5). Leakage is detected by monitoring a pressure change in the surrounding of the container which is due to evaporation of liquid emerging from a leak and being evaporated in the low pressure surrounding.
Patent CA-2292093-A1 (CA)
Inventor: SEXTON RICHARD W
IPC: B41J2/16
Filed: 1999-12-13
Abstract: An orifice plate for an ink jet printing system has improved fabrication. The orifice plates are formed as part of a larger panel. They are mechanically attached to the larger panel and electrically connected to it by means a large number of uniformly space narrow bridge members. These bridge members each converge to a narrow point at the edge of the orifice plate to cause the bridge to detach from the edge of the orifice plate when the orifice plate is to be removed from the larger panel at the time of orifice plate bonding.
Patent CA-2292103-A1 (CA)
Inventor: BOWLING BRUCE A
IPC: B41J29/02
Filed: 1999-12-13
Abstract: A printhead alignment apparatus is provided for use with a continuous ink jet printer.      A single chassis maintains alignment of the droplet generator and the catcher/charge plate assembly.      Electronic and fluidic components are attached to the single chassis, with the single chassis separating the electronic and fluid related functions of the printhead. Also, mounting features and connections of the electronic and fluid related functions are separated from mounting features of the catcher and the droplet generator. Connections for the electronic and fluid related functions are in a plane parallel to the plane of the catcher.      The single chassis also accurately locates an eyelid mechanism relative to the droplet generator and the catcher/charge plate assembly. Finally, the single chassis has a z-axis length larger than its x-axis depth, with the z-axis length being perpendicular to a plane of the catcher.
Patent CA-2292710-A1 (CA)
Title: Improved cascade refrigeration process for liquefaction of natural gas
Inventor: COLE ERIC T
IPC: F17C3/00
Filed: 1998-06-18
Abstract: This invention relates to a process for liquefying a pressurized gas stream (10) rich in methane with a heat exchanger being cooled by a cascade refrigeration system to produce a methane-rich liquid product (20) having a temperature above about -112 °C (-170 °F).  In this process, a pressurized gas stream (10) is introduced into heat exchange contact with a first refrigerant cycle (32) comprising at least one refrigeration stage (30-31) whereby the gas stream is cooled against a first portion of a first refrigerant to produce a cooled gas stream. The cooled gas stream is then introduced into heat exchange contact with a second refrigerant cycle (33) comprising at least one refrigeration stage (37-39) whereby the temperature of the cooled gas stream is cooled to produce a liquefied methane-rich stream (20) having a temperature above about -112 °C (-170 °F) and a pressure sufficient for the liquefied stream to be at or below its bubble point.
Patent CA-2293754-A1 (CA)
Inventor: LYNCH RICHARD
IPC: E05B67/38
Filed: 1999-12-30
Abstract: In a padlock the locking pin or shackle and the body of said padlock, are vunerable to being forced open by numerous means. In this invention the locking pin is completely enclosed in two halves of hardened steel which when joined together, form one solid block. This invention is used in conjunction with a metal case, which when installed in the outer face of a door, provides a recess into which the blocklock is installed, leaving it flush with the. outer face of said door thus rendering it virtually impossible to force open.
Patent CA-2296022-A1 (CA)
Inventor: HEINE ROBERT PHILLIPS
IPC: G01N33/68
Filed: 1998-02-06
Abstract: A method and apparatus for screening for reproductive tract inflammation and preeclampsia which utilizes the increase in neutrophil defensins to indicate that a patient is at risk of having reproductive tract inflammation or preeclampsia. The apparatus consists either an ELISA based measurement of defensins levels or a dipstick test that can be administered by the provider or self-administered by the patient.