baber/WOPTO huggingface dataset:
Patent CA-2309278-A1 (CA)
Title: Biodegradable, anionic polymers derived from the amino acid l-tyrosine
Inventor: ERTEL SYLVIE I
IPC: C08G69/10
Filed: 1998-11-07
Abstract: A polymer with a hydrolytically la-bile backbone and having structure (VIII) wherein R9 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid group or the benzyl ester thereof; R12 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid ester group selected from straight and branched alkyl and alkylaryl esters con-taining up to 18 carbon atoms and ester derivatives of biologically and pharma-ceutically active compounds covalently bonded thereto, provided that the ester group is not a benzyl group or a group that is removed by hydrogenolysis; each R7 is independently an alkylene group containing up to four carbon atoms; A is selected from: (a) and (b) wherein R8 is selected from saturated and unsaturated, substituted and unsubstituted alkyl, aryl and alkylaryl groups containing up to 18 carbon atoms; k is between about 5 and about 3,000; and x and f independently range from zero to less than one.
Patent CA-2309644-A1 (CA)
Title: Improved structure of a multi-angle nut and its driving or unscrewing tool
Inventor: ZHANG ZHEN-HAI
IPC: B25B13/04
Filed: 1998-09-10
Abstract: A nut is provided having a tapered, polygonal nut body , an axial coupling hole defined within the nut body, an inner thread provided on the inside of the nut body around the axial coupling hole, the nut body having a tapered, polygonal outside wall axially inwardly sloping from a front end thereof toward a year end thereof. A socket wrench is provided having a socket integral with one end of a shaft thereof, the socket defining a tapered, polygonal coupling hole for coupling to the tapered, polygonal nut body of a nut, permitting the nut to be turned with the socket wrench.
Patent CA-2309977-A1 (CA)
Title: 6-o-alkyl derivatives of erythronolide b
Inventor: RILEY DAVID A
IPC: A61P31/04
Filed: 1998-11-17
Abstract: Novel 6-O-alkyl derivatives of erythronolide B are provided. A process for the preparation of 6-O-alkyl derivatives of erythronolide B using erythromycin B  is also provided. A process for preparing 6-O-alkyl derivatives of erythromycin C using novel 6-O-alkyl derivatives of erythronolide B is further provided.
Patent CA-2313699-A1 (CA)
Title: Cationic electro-coating composition
Inventor: NISHIDA REIZIRO
IPC: C09D5/44
Filed: 1998-12-02
Abstract: This invention relates to cationic electro-coating composi-tion which comprises blending which an aqueous dispersion or an aqueous dispersion paste which contains an organic acid-modified bismuth compound in a non-water-soluble state, and which is ob-tained by mixing and grinding a bismuth compound and an organic acid in an aqueous medium. Said cationic electro-coating composi-tion, although containing no lead compounds, is capable of forming an electrocoated film which is excellent in corrosion resistance, appearance, etc.
Patent CA-2314800-A1 (CA)
Title: Method and composition for cleaning teeth by oral abrasion
Inventor: JACOBS PATRICK T
IPC: A61C3/025
Filed: 2000-08-01
Abstract: A method for cleaning teeth by abrasive oral irrigation with a slurry containing a granular dentifrice composition. The dentrifrice composition is gravity fed to a liquid resrvoir of an oral irrigation device of the type that provides a pulsed, liquid jet stream, and forms a slurry within the reservoir. The slurry is pumped from the device and applied under pressure to teeth and gums. The composition includes a particulate baking soda having granular paticles with major dimension in the range 10 to 60 microns, and a flow agent in an amount sufficient to ensure smooth and continuous gravity feed of the composition into the reservoir.      A method for making the composition is described.
Patent CA-2315477-A1 (CA)
Title: Method and apparatus for horizontal casting of an archery bow
Inventor: MUSSIVAND MATTHEW T
IPC: F41B5/14
Filed: 2000-08-11
Abstract: An apparatus and method for casting a hand bow in a horizontal orientation, to provide reduced forearm slap, increased accuracy, and reduced grip arm fatigue. The horizontal orientation also enables the bow assembly to be used in seated and prone positions, as well as when standing. A grip member having a rearwardly facing alignment channel is mounted or formed on the riser of the bow. The channel is configured to receive and engage the metacarpal head area or another portion of the grip hand so as to form a horizontal pivot access.  The pivot access is positioned in substantially the same plane as the primary plane of the bow assembly, thereby minimizing development of torque when the bowstring is drawn. A bracket assembly is provided for mounting an arrow rest and sights for use in the horizontal orientation.
Patent CA-2319958-A1 (CA)
Inventor: PREVOST DONALD
IPC: G06K9/74
Filed: 2000-09-18
Abstract: An optical coherent processor or correlator for processing an input image produced by an imaging device illuminated by a coherent light source utilizes an optical key for preventing unauthorized use of the processor. The principle underlying processing apparatus and method according to the invention uses an optical lock in combination with an encoded software key superimposed on a filter image. The optical lock, which is preferably in hardware form, consists of a first optical mask implementing a locking mask function that is preferably complex (phase and/or amplitude), which first optical mask is included in the optical path of the processor. The mask is fixed during assembly of the processor or correlator and a unique pattern is encoded thereon. The software key consists of a pattern defined by a key mask function that is displayed preferably using a spatial light modulator as part of a second optical mask included on the processor optical path. The key mask function is designed to compensate for the wave-front distortion generated by the locking mask function of the first optical mask. Therefore, an optical processor or correlator provided with its unique hardware lock cannot generates useful correlation, unless a corresponding unique software key is used.
Patent CA-2320458-A1 (CA)
Inventor: DHULER VIJAYAKUMAR R
IPC: B81B3/00
Filed: 2000-09-22
Abstract: A MEMS (Micro Electro Mechanical System) variable optical attenuator is provided that is capable of optical attenuation over a full range of optical power. The MEMS variable optical attenuator comprises a microelectronic substrate, a MEMS actuator and an optical shutter. The MEMS variable optical attenuator may also comprise a clamping element capable of locking the optical shutter at a desired attenuation position. The variable light attenuator is capable of attenuating optical beams that have their optical axis running parallel and perpendicular to the substrate. Additionally, the MEMS actuator of the present invention may comprise an array of MEMS actuators capable of supplying the optical shutter with greater displacement distances and, thus a fuller range of optical attenuation. In one embodiment of the invention, the MEMS actuator comprises a thermal arched beam actuator. Additionally, the variable optical attenuator of the present invention may be embodied in a thermal bimorph cantilever structure. This alternate embodiment includes a microelectronic substrate and a thermal bimorph cantilever structure having at least two materials of different thermal coefficient of expansion. The thermal bimorph is responsive to thermal activation and moves in the direction of the material having the lower thermal coefficient expansion. Upon activation, the thermal bimorph intercepts the path of the optical beam and provides for the desired level of optical attenuation. The invention also provides for a method of optical attenuation and a method for fabricating an optical attenuator in accordance with the described structures.
Patent CA-2321056-A1 (CA)
Title: Adjustable vehicle suspension
Inventor: MCKINSTRY BRUCE B
IPC: B60G15/12
Filed: 1999-02-17
Abstract: A suspension assembly for mounting a wheel assembly to any wheel position of a vehicle, the suspension assembly being pneumatically controlled to adjust both the ground clearance of the vehicle and its wheel-track width, the suspension assembly also being mountable at any wheel position whether the wheel at that position is to be steerable or nonsteerable. The suspension system includes upper and lower control arms connected between a frame attachable to the vehicle and a kingpin assembly to provide a parallelogram linkage. It also includes at least one pneumatically actuated linear actuator to control the angular disposition of the lower control arm with respect to the frame and thereby control the ground clearance and wheel-track width of the vehicle. The parallelogram geometry provides the upper and lower control anns with at least 120 degrees of angular travel. When in a stowed position, the control arms are nearly vertical and fit, with the kingpin, within a space effectively equal to that occupied by the linear actuators and the frame. The disposition of the suspension assembly components is such that wheels are drivable with wheel-mounted electric drives, inboard-mounted electric drives, or a conventional engine drive.
Patent CA-2325239-A1 (CA)
Title: Battery lead with charging and operating connection
Inventor: JACOBS JAMES K
IPC: H01R24/38
Filed: 2000-11-07
Abstract: An electrical lead for simultaneously connecting an external power source to an electrical load and an external battery is disclosed. The electrical lead has preferably a double connector comprising a socket part axially aligned with a plug part at a first end of the lead. The socket part connects with a plug from an external power source and the plug part connects with an electrical load, such as a portable computer. A separate plug, located at the second end of the electrical lead, is provided for connecting to an external battery. The socket part, connectable to the external load, is electrically coupled to the plug part for connection to the electrical load and also the plug for connection to the external battery. The lead comprises a first insulated conductor electrically coupling the socket part to the plug, and, a second insulated conductor electrically coupling the plug to the plug part. In this way, the socket part is electrically coupled in parallel with the plug part. Furthermore, the internal terminals of the socket part, the plug part and the plug are electrically coupled in parallel. Likewise, the external terminals of the socket part, the plug part and the plug are electrically coupled in parallel.
Patent CA-2327649-A1 (CA)
Inventor: RANIERE JOHN PAUL
IPC: A61F2/06
Filed: 1999-04-08
Abstract: A composite graft (10) for a fluid-carrying vessel in a living body, comprising: an inner vessel (12) comprising a biologic collagenic material that has been stabilized, an outer member (14) surrounding at least a segment of the inner vessel (12) and defining an annulus (16) between the inner vessel (12) and the sleeve (14), the outer member (14) comprising a polymeric fabric, and a bioactive compound in said annulus (16), said bioactive compound being carried on a time-release vehicle. The bioactive compound is preferably an occlusion-preventing agent. Alternatively, the sleeve (14) includes the bioactive compound, either on its inner surface or integrally as part of its fibers.
Patent CA-2328247-A1 (CA)
Inventor: OCHOMOGO MARIA G
IPC: C11D1/70
Filed: 1999-04-09
Abstract: An aerosol cleaning composition for hard surfaces is provided with a surprisingly enhanced bathroom soil removal capability. The dispensable includes: (a) an an-ionic, nonionic, amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, the total amount of said surfactant being present in a cleaning effective amount; (b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25 °C, said at least one organic solvent present in a solubilizing - or dispersion - effective amount; (c) a chelating agent selected from the group consisting of tri- or tetrapotassium ethylenediamine-tetraacetate (potassium EDTA), tri- or tetraammonium ethylenediamine-tetraacetate (ammonium EDTA) and mixtures thereof, said chelating agent present in an amount effective to enhance bathroom soil removal in said composition;  (d) an effective amount of a propellant; and (e) the remainder, water. The preferred nonionic surfactant is an alkyl polyglycoside which provides a formulation stable to containment within a tin-plated steel can and which also facilitates processing of the composition.
Patent CA-2331228-A1 (CA)
Title: Packet loss compensation method using injection of spectrally shaped noise
Inventor: SCHULZ DIETER
IPC: G10L19/005
Filed: 2001-01-17
Abstract: An insertion-based error concealment method and apparatus are provided whereby, instead of directly inserting white noise, a filter is created to shape the white noise. The filtered white noise is then used to replace lost data. The method of the present invention is implemented by first estimating the power spectrum of the previous frame; then designing a filter with transfer function H(f), where ~H(f)2=the estimated power spectrum;  and finally generating the replacement packet using noise which has been spectrally modified by the filter. The resulting filtered noise has, the same power spectrum as the previous packet but is not highly correlated with it.
Patent CA-2332863-A1 (CA)
Inventor: FORN DALMAU JAVIER
IPC: A61P31/04
Filed: 1999-05-26
Abstract: L'invention concerne l'utilisation de dérivés de l'acide 2-hydroxy-4-trifluorométhylbenzoïque permettant d'inhiber l'activation du facteur de transcription nucléaire NF-?B. L'invention concerne en outre l'utilisation de dérivés de l'acide 2-hydroxy-4-trifluorométhylbenzoïque permettant de préparer des médicaments pour le traitement ou la prévention de pathologies associées à l'activation du NF-?B et/ou l'expression de gènes dépendants ou régulés, au moins partiellement, par le NF-?B chez les mammifères, y compris l'homme.
Patent CA-2334761-A1 (CA)
Title: Composition comprising .beta.-hydroxy-.beta.-methylbutyric acid and at least one amino acid and methods of use
Inventor: ABUMRAD NAJI M
IPC: A61K31/198
Filed: 1999-06-23
Abstract: The present invention provides a composition comprising HMB and at least one amino acid. The present invention also provides a method for the treatment of disease-associated wasting of an animal, a method for decreasing the serum-level of triglycerides of an animal, a method for decreasing the serum viral load of an animal, a method for redistributing fat in an animal having a visceral region and a subcutaneous region, a method for increasing the lean tissue mass of an animal without substantially decreasing the fat mass of the animal, and a method for increasing the HDL cholesterol-level of an animal. All methods comprise administering to the animal a composition comprising HMB and at least one amino acid.
Patent CA-2336766-A1 (CA)
Title: Circuit breaker with latch and toggle mechanism operating in perpendicular planes
Inventor: SCHMALZ STEVEN CHRISTOPHER
IPC: H01H71/16
Filed: 2001-02-14
Abstract: The toggle mechanism of a circuit breaker is connected at one end to the pivoted contact arm and at the other end to a pivoted latch lever which is engaged to latch the toggle mechanism by a latch member pivoted for movement in a plane perpendicular to the plane of the toggle mechanism. The latch member serves as an armature for a trip motor energized by a trip circuit responsive to an arc fault and/or a ground fault to unlatch the toggle mechanism and trip the circuit breaker open. The latch member is also tripped by a helical bimetal responsive to persistent overcurrents and coupled to the latch member through an ambient compensator bimetal cantilevered from the latch member. A flexible shunt connected between the helical bimetal and contact arm passes through an extension of the magnetic, circuit of the trip motor to generate a magnetic field of sufficient strength to trip the latch member instantaneously in response to a short circuit.
Patent CA-2337157-A1 (CA)
Title: Nested solid, solid wall anchor
Inventor: GARFIELD NATHANIEL H
IPC: F16B13/12
Filed: 1999-05-24
Abstract: A solid wall plug-type anchor (10) comprised of a plastic material comprising a central hinge (2) with two extension members (la, lb) extending therefrom which are moved into nested juxtaposition with one another. The extension members each include wells (5) and nesting elevations (6) and depressions (7). Free ends of extension members form a cavity for initial guided insertion of a screw or bolt.
Patent CA-2338565-A1 (CA)
Title: Method and device for optimising lacquers
Inventor: SCHWALM REINHOLD
IPC: B05C11/10
Filed: 1999-07-23
Abstract: The invention relates to a method and a device for optimising at least one lacquer in at least one place on the surface of a substrate to which the lacquer is applied. The method is carried out using the corresponding device and comprises at least the following steps: a) applying the at least one lacquer in at least one place on the surface of the substrate; b) curing the at least one lacquer in the at least one place on the surface of the substrate and c) determining the status of especially the curing and/or discoloration and/or lustre of the lacquer in the at least one place on the surface of the substrate following steps a) and b).
Patent CA-2342550-A1 (CA)
Title: Cutting apparatus with thermal and nonthermal cutters, and associated methods
Inventor: BLACKMON JOSEPH B
IPC: B23K26/38
Filed: 2001-03-30
Abstract: A table has a pervious support surface and a gantry is mounted for movement across the support surface in a longitudinal direction. A carriage is mounted to the gantry for movement across the support surface in a transverse direction.  Water jet and plasma arc cutting heads are carried by and movable with the carriage.
Patent CA-2347710-A1 (CA)
Title: Keyless portable cellular phone system having remote voice recognition
Inventor: SEGAL ALON
IPC: H04W88/18
Filed: 1999-09-30
Abstract: A keyless portable cellular phone system is provided, wherein matched sets of algorithmically generated communication units are generated, each communication unit pair defining a discrete time increment of authorized communication. One set is stored on a system server (i.e. a service provider), and the pre-paid set is available for use within a keyless portable cellular phone. The phone, normally non-activated, automatically contacts the system server upon selective activation by the user, to initiate a call (outgoing or incoming). A voice recognition system allows the user to place calls and/or receive calls. During a call, the keyless portable cellular phone periodically sends the sequential discrete airtime communication units, having unique identifiers (i.e. encryption), whereby the system server allows pre-paid authorized access to time increments of system services, such as communication, based upon the receipt of the matching, uniquely identified, sequential discrete airtime communication units. The phone typically has either an internal energy supply and storage for pre-paid communication units, or a removable airtime cartridge, typically containing an energy supply and either the ability to store or to generate a set of pre-paid single use airtime communication units.
Patent CA-2349294-A1 (CA)
Inventor: DROBOSYUK VIKTOR MIKHAILOVICH
IPC: D21F1/42
Filed: 1999-10-25
Abstract: A device for feeding fibrous aerosuspension onto a forming wire of a paper-making machine comprises a cylindrical body, a plurality of input channels, and an output channel. A rotor having a plurality of rotor blades attached thereto is mounted within the cylindrical body. The aerosuspension flow enters the device through the input channels from a plurality of dispersers. The rotor agitates the aerosuspension flow so that the output channel provides an aerosuspension flow having a uniform distribution of fibers across the width of the forming wire.
Patent CA-2350174-A1 (CA)
Inventor: BEST ISAAC WM
IPC: A47L23/26
Filed: 2001-06-13
Abstract: An innovation ingeniously designed to clean the sole and heel of footware with a continuous forcible sweeping action, without being removed from the foot.        The On-Off sweep mechanism is activated by simply placing the foot on the device and moving it slowly towards the rear.
Patent CA-2351263-A1 (CA)
Title: Tank for gaseous fuels with additional internal reservoir
Inventor: BOOTH WAYNE A
IPC: F17C1/00
Filed: 2001-06-22
Abstract: A storage tank for storing and selectively dispensing pressurized combustible fluid comprises a main tank having a delivery outlet, and a first valve mounted on the main tank in fluid communication with the delivery outlet for controlling the flow of the pressurized combustible fluid from within the main tank to the ambient surroundings. A reserve tank is mounted in supported relation on the main tank and has a reserve outlet disposed within the main tank to permit direct fluid delivery from the reserve tank into the main tank. A selectively openable and closable second valve is mounted on one of the main tank and the reserve tank in operative connection with the reserve outlet for selective movement between a closed configuration whereat flow of the pressurized combustible fluid from the reserve tank through the reserve outlet to the main tank is precluded, and an open configuration whereat flow of the pressurized combustible fluid from the reserve tank through the reserve outlet to the main tank is permitted.
Patent CA-2353064-A1 (CA)
Title: Gas displaced chamber lift system
Inventor: AVERHOFF JON R
IPC: E21B43/12
Filed: 1999-10-25
Abstract: An artificial lift system for use in a wellbore having at least one chamber (122) with an inlet (142) and an outlet (144), a power gas string (130, 146) connected to the chamber (122), a liquid string (148, 150, 128) connected to the outlet (144) of the chamber (122), a vent (134, 132, 146) connected to the chamber (122) for selectively allowing a gas to pass outwardly of the chamber, a compressor connected to the power gas string (130, 146) for passing pressurized gas into the power gas string (130, 146), and a valve (140) connected to the power gas string (130, 146) and the chamber (122). The valve (140) selectively allows the pressurized gas to enter the chamber (122) so as to cause any liquid in the chamber (122) to pass through the outlet (144) and into the liquid string (148, 150, 128) such that the liquid extends continuously along the liquid string (148, 150, 128) along the entire length of the string (148, 150, 128).
Patent CA-2353249-A1 (CA)
Inventor: SLACK MAURICE WILLIAM
IPC: E21B17/16
Filed: 2001-07-18
Abstract: A centralizer for installing on a thick-wall metal pipe.
Patent CA-2353697-A1 (CA)
Inventor: INKSTER D ROBERT
IPC: G06F3/042
Filed: 2001-07-24
Abstract: An input device has a flexible surface on which are formed deflection sensors. The flexible surface can be deformed against an adjacent resilient layer. The deflection sensors detect the deflection of the surface. Electronic circuits for processing signals from the deflection sensors to yield information regarding the locations and magnitudes of forces deflecting the surface may be deposited all, or in part on the flexible surface. The input device may be combined with a display to yield a touch-sensitive display suitable for use in a wide range of applications.
Patent CA-2354479-A1 (CA)
Inventor: CHANG BERNICE SHOU-HUA
IPC: H01M50/497
Filed: 1999-12-17
Abstract: A battery including a polar solvent transportive, ionically conductive separator formed directly on an electrode is prepared by applying a coating composition containing a polymer or gel dispersed in a polar solvent directl y to the electrode surface and solidifying materials in the coating compositio n to form a separator membrane.