baber/WOPTO huggingface dataset:
Patent CA-2165389-C (CA)
Title: Press-fit ear wax barrier
Inventor: YOEST ROBERT S
IPC: H04R1/10
Filed: 1995-12-15
Granted: 2003-07-08
Abstract: An ear wax barrier for an in-the-ear or in-the-canal type hearing aid device positioned at least in part between a receiver output port and a shell acoustic output port includes a substantially cylindrical housing having a barbed portion for press-fitting the barrier into position.  The barrier may include a screen and/or a plurality of undulations, such as a thread internal thereto for providing wax accumulation sites to retard the migration of wax into the hearing aid.  The barrier is more easily inserted than removed.
Patent CA-2167068-C (CA)
Inventor: RENNER KLAUS
IPC: B65D75/36
Filed: 1994-07-08
Granted: 2001-10-23
Abstract: A   package   for  goods   in   pellets,   in   particular pharmaceuticals,  consists of a deep-drawn part for receiving the goods,  of  a  covering  foil  and  of  an  adhesive  foil.    In  the deep-drawn part is arranged at least one deep-drawn goove (17) over which  the  covering  foil  (12)  is  stretched.   When a flap  (14) arranged in the covering foil (12) over one end of the deep-drawn groove  (17)  is  open   the  packaged  goods  may  be  accessed  and individually  removed  from  the  package.   An  adhesive  foil  (15) stretched over the flap area of the covering foil (12) also covers the flap (14).   To open the package,  the adhesive foil is drawn upwards, opening the flap (14) in the covering foil and freeing the deep-drawn groove.   The magazine-like packaging of the individual objects, as well as the used foils, allow a most effective material use and minimal impact on the environment, as the extremely compact package  may  be  recycled  as  a whole,  thanks  to  an  appropriate selection  of  the  foil  materials  (package  made  of  a  single material).
Patent CA-2173381-C (CA)
Title: Recovery of nitric acid from nitration processes
Inventor: HERMANN HEINRICH
IPC: C07C205/06
Filed: 1996-04-03
Granted: 2007-06-26
Abstract: A process for the removal and recovery of nitric acid, sulfuric acid and nitrous oxides (NO X) from the crude dinitrotoluene (DNT) obtained by nitrating with an acid, a benzene derivative selected from the group consisting of toluene or mononitrotoluene (MNT) after separation of said dinitrotoluene from said nitrating acid, wherein said crude dinitrotoluene is extracted in a plurality of steps whereby a dilute aqueous solution of nitric, sulfuric and nitrous acids countercurrently contacts said crude dinitrotoluene, said volume ratio of said dinitrotoluene to said aqueous solution being between 1:3 and 10:1, said extraction steps resulting in the formation of an aqueous extract which is blended directly into said nitrating acid for re-use in the acid nitration of said benzene derivative.
Patent CA-2174661-C (CA)
Title: Catalyst composition for copolymerizing ethylene
Inventor: MINK ROBERT IVAN
IPC: C08F4/614
Filed: 1994-11-14
Granted: 2009-05-12
Abstract: An ethylene copolymerization catalyst is prepared by impregnating a porous support, such as silica, with an organomagnesium compound such as a magnesium alkyl and contacting the magnesium-containing support with a silane compound which is free of hydroxyl groups, such as a tetraalkyl orthosilicate e.g. tetraethyl orthsilicate (TEOS). A transition metal component such as titanium tetrachloride is then incorporated into the support in a specific ratio to the magnesium and silane components. Activation of this catalyst precursor with a trialkylaluminum compound results in a catalyst which is effective for the production of ethylene copolymers.
Patent CA-2176481-C (CA)
Title: Earthquake, wind resistant and fire resistant pre-fabricated building panels and structures formed therefrom
Inventor: ABOU-RACHED ROGER GEORGES
IPC: E04C5/18
Filed: 1994-01-07
Granted: 1999-12-14
Abstract: An earthquake, fire and wind resistant pre-fabricated building panel comprises aplurality of frame members (150, 152-155). The frame members are connected together to form a frame lying in a frame plane, the frame defining a perimeter of the panel, the perimeter bounding an interior portion of the panel. At least some of the frame members are biased inwardly, generally in the frame panel, towards the interior portion of the panel. A first solidified castable substance (270) is cast in the interior portion of the frame, between the frame members. A three-dimensional structure such as a house is formed by connecting the panels together. The connections absorb and distribute seismic forces to the entire three-dimensional structure and the biased frame members act to absorb residual seismic forces reaching the individual panels. The castable substance and biased frame members permit the panel to withstand both positive and negative loading and render the panel fire resistant.
Patent CA-2185960-C (CA)
Title: An installation for eliminating impurities during casting of metals
Inventor: MENENDEZ FERNANDO SITGES
IPC: B22D35/00
Filed: 1996-09-19
Granted: 2003-06-10
Abstract: An installation for eliminating impurities during casting of metals, comprising at least one casting ladle which forms an outlet siphon and can tilt around a transverse axis. Starting from the siphon, the casting ladle is prolonged by a conduit which ends at a scum-retaining pan, the said components forming a single piece. The pan has outlet orifices at the bottom and is externally lined with a ceramic cloth which acts as a filter for retention of impurities.
Patent CA-2187565-C (CA)
Title: Signal processing method for multiexponentially decaying signals and application to nuclear magnetic resonance well logging tools
Inventor: EDWARDS CARL M
IPC: G01R33/46
Filed: 1996-10-10
Granted: 2002-12-03
Abstract: A method of reducing bias error in nuclear magnetic resonance (NMR) spin-echo signals. The method includes filtering the signals using a filter having a bandwidth inversely related to the length of time from the initiation of the measurement of the NMR signals. In a preferred embodiment, the NMR spin-echo signal measurements are filtered using a moving average filter having an averaging span which increases with respect to the time elapsed from initiation of the spin-echo measurement sequence.
Patent CA-2188241-C (CA)
Title: Self protecting knife for curved jaw surgical instruments
Inventor: PARASCHAC JOSEPH F
IPC: A61B18/14
Filed: 1996-10-18
Granted: 2006-08-15
Abstract: An electrosurgical hemostatic instrument including a curved end effector. A preferred embodiment of the invention provides a bipolar endoscopic clamping, coagulation and cutting device. In this device, a substantially straight, axially flexible knife is used to cut tissue grasped by the jaws of the end effector. The end effector includes a knife channel which is wider than the knife. The knife may include sacrificial contact points adapted to contact the walls of the knife channel as the knife moves through the channel, protecting the cutting edges of the knife blade from damage.
Patent CA-2195130-C (CA)
Inventor: GARTUNG CLIFFORD W
IPC: A47B21/00
Filed: 1997-01-15
Granted: 2000-08-29
Abstract: A system is provided for storing, distributing, and managing variable-type communication cables in open office environment. The system of the present invention uses a centrally located multi-user communication cable interface module, a series of cable channels with protective caps adapted to be mounted on most partition panel upper surface, a plurality of jumper cables routed horizontally from said communication cable interface module along said cable channels, and a plurality of routing conduits adjacent the partition panel for vertically directing the jumper cables from the cable channel to the communication cable receiving device. The present invention eliminates inconvenience and extended downtime associated withoffice relocations by maintaining a central connection and easily accessible, removable, and reconnectable jumper cables while providing virtually invisible cable management and distribution. The system permits management and distribution of copper, coaxial, and fiber optic communication cables simultaneously while maintaining the standards set by the EIA/TIA.
Patent CA-2204958-C (CA)
Inventor: CROOKHAM JOE P
IPC: H04N5/232
Filed: 1997-05-09
Granted: 2001-10-16
Abstract: An apparatus and method of evaluating lighting for a given target area that will have an event which is televised. The method includes calculating television foot-candle and vertical foot-candle for various points on the target area as well as calculating the ratio between those two readings. These calculated readings can then be evaluated for the purpose of determining whether sufficient uniformity and intensity exists for given aiming locations on the target area to provide high quality television filming.  The apparatus is preferably a computer program that is installed on a computer that would allow both simulations of not yet existing lighting systems to design lighting systems for optimum television coverage or evaluate existing lighting systems to change them for better performance for televising.
Patent CA-2208289-C (CA)
Inventor: O'ROURKE THOMAS J
IPC: G06F13/10
Filed: 1997-06-19
Granted: 2009-12-29
Abstract: A method and computer program product are presented that overcome the inefficiencies in user mode processing of multimedia data by allowing an application running as a user mode process simply to start and connect multiple blocks of kernel mode functionality in the form of drivers or filters (separate logical blocks of driver executable code). Once the kernel mode filters are set up and connected, the user mode application need not be active until notified by the filters. Such notification may occur at the end of processing or at any relevant event chosen by the application as part of the filter initiation and set up. Furthermore, a user mode application may query a kernel mode filter or driver of its capabilities and requirements so that it may properly make the connections between the different filters chained together to process a stream of data and request appropriate notifications. These connection may represent actual driver to driver data exchange, or remote connections. In one exemplary embodiment, property, method, and event sets define compliant filters and native operating system I/O constructs such as file objects are used to define the instances of connection "pins" that are interconnected by the third party user mode application.
Patent CA-2211198-C (CA)
Title: Aqueous phenolic resin dispersions
Inventor: BOURLIER KEN A
IPC: C08L61/06
Filed: 1996-01-22
Granted: 2001-07-31
Abstract: The invention is directed to a stable phenolic dispersion of hydrophilic phenolic resin polymer using polyvinyl alcohol as protective colloid. Incorporation of a small proportion of an etherified bisphenol-A resin into an aqueous solution of a phenolic resin and a protective colloid (e.g., polyvin yl alcohol) forms a stable dispersion with low volatile organics content.</SDOA B>
Patent CA-2213185-C (CA)
Title: Multiple optical curve molds formed in a solid piece of polymer
Inventor: LABELLE ROBERT E
IPC: B29L11/00
Filed: 1997-08-15
Granted: 2006-11-07
Abstract: An injection molding process for molding an assembly of a frontcurve molds in a plurality of unitary solid piece of polymer in which plurality of frontcurve molds are arranged symmetrically around a single center polymer injection gate. In this arrangement the molten polymer flows radially outwardly therefrom uniformly in all directions to the four frontcurves to form one common molded piece of polymer. In a compression injection molding process, the pressure on the molten polymer is maintained relatively constant, and the mold is mechanically collapsed during the molding operation. The present invention molds an assembly of frontcurve molds in a manner in which there is a significant reduction of residual stress locked into the resultant assembly of frontcurve molds. This results in a significant reduction in warpage and shrinkage of each frontcurve mold, which is not optically stressed, and results in a subsequent casting of an ophthalmic lens which is not optically stressed. Moreover, the assembly of frontcurve molds can function as its own support pallet for product placement and alignment purposes during subsequent production operations.
Patent CA-2217175-C (CA)
Inventor: NAKAI TETSUO
IPC: C04B35/56
Filed: 1997-09-30
Granted: 2002-04-09
Abstract: A hard sintered body for a tool contains 25 to 47 vol. % of cBN, 40 to 70 vol. % especially less than 45 vol.%, in total of a carbo-nitride, and a boride of Ti, and 2 to 20% vol.% in total of a boride and a nitride of Al. In the carbo-nitride of Ti, the ratio of carbon to nitrogen is in the range of 60:40 to 30:70. In this hard sintered body, cBN particles are bonded to each other through binder phases. The obtained product is a hard sintered body for a tool which is excellent in wear resistance and chipping resistance for high-speed cutting of hardened steel.
Patent CA-2218520-C (CA)
Inventor: SCHMID ACHIM
IPC: F23R3/28
Filed: 1997-10-16
Granted: 2007-03-13
Abstract: A combustion chamber of a gas turbine with a ring-shaped head section, in which a front plate for receiving burners is provided, which are supplied with a primary airflow via annularly arranged air inlet openings in the head section, wherein the backup points being formed on the exterior of the head section (1) in respect to the inflow to the air inlet openings form a ring, within which the air inlet openings are located, and wherein furthermore the front plate has heat shields provided in the combustion chamber burner section and fixed in place by means of bolt connections. In addition, mounting openings for the bolt connections (11) are provided in the head section, wherein the backup points being formed on the exterior of the head section in respect to the inflow to the mounting openings form a ring, which is not located outside the ring formed by the backup points of the air inlet openings.
Patent CA-2222325-C (CA)
Inventor: LACROIX ERIC
IPC: C07C19/08
Filed: 1997-12-12
Granted: 2007-03-06
Abstract: Des catalyseurs utiles pour la fluoration d'hydrocarbures halogénés par HF en phase gazeuse sont obtenus par simple imprégnation d'un oxyde de chrome massique avec une solution d'un dérivé du nickel, l'oxyde de chrome utilisé présentant une surface BET supérieure à 150 m2/g et un volume poreux supérieur à 0,15 ml/g.
Patent CA-2224093-C (CA)
Title: Human vascular endothelial growth factor 2
Inventor: HU JING-SHAN
IPC: A61P3/10
Filed: 1996-06-06
Granted: 2003-03-25
Abstract: Disclosed is a human VEGF2 polypeptide and DNA (RNA) encoding such VEGF2 polypeptides. Also provided is a procedure for producing such polypeptide by recombinant techniques and antibodies and antagonist against such polypeptide.  Also disclosed is a method of using such polypeptide for stimulating wound healing and for vascular tissue repair. Also provided are methods of using the antagonists to inhibit tumor growth, inflammation and to treat diabetic retinopathy, rheumatoid arthritis and psoriasis. Diagnostic methods for detecting mutations in the VEGF2 coding sequence and alterations in the concentration of VEGF2 protein in a sample derived from a host are also disclosed.
Patent CA-2225422-C (CA)
Title: Laser surface treatment device and method
Inventor: BOHER PIERRE
IPC: H01L21/268
Filed: 1996-07-03
Granted: 2007-05-22
Abstract: In a laser surface treatment method, at least two generally similar surfaces of a given depth are provided, on each of which a treatment laser beam is to be applied in one or several steps, with properti es selected so as to change the physical state of each surface. At least one ellipsometry measurement is made at least before one o f the applications of the beam on the second surface, in at least one region of the first surface, so as to obtain a physico- chemical characterisation of the said first surface, the laser beam application and the ellipsometry measurement being conducted in general ly similar working conditions, so that the change of the physical state of each surface produced by the laser can be controlled i n real time, in situ, rapidly and non destructively, on the basis of said characteristics.
Patent CA-2229197-C (CA)
Inventor: SMITH DANIEL P
IPC: F27D7/02
Filed: 1998-02-10
Granted: 2001-07-03
Abstract: A gaseous flow reversing system is disclosed for use with a regenerative  furnace.   The reversing system includes a combustion air inlet unit for receiving combustion air,  and a valve unit.   The valve unit is slidable between first and second positions with respect to the combustion air inlet unit for alternately directing the flow of combustion air from between the combustion air inlet unit and a first regenerator port when the valve unit is in the first position,  and from between the combustion air inlet unit and a second regenerator port when the valve unit is in the second position.  The valve unit includes valve flow distribution channels for distributing the  flow of the combustion air into at least one of the regenerator ports from among a plurality of locations extending along the valve unit.
Patent CA-2230243-C (CA)
Inventor: GUERRO GERALD
IPC: C08L25/14
Filed: 1996-08-23
Granted: 2008-08-19
Abstract: L'invention concerne des compositions contenant du polyacrylamide hydrophile et des agents d'encollage hydrophobes et l'utilisation de ces compositions dans le papier et le carton pour augmenter leur imprimabilité, leur qualité d'encollage et leur résistance.
Patent CA-2230371-C (CA)
Title: Tire-bouchon
Inventor: PECK JULIAN
IPC: B67B7/04
Filed: 1996-08-28
Granted: 2001-12-11
Abstract: Appareil constituée d'une vis (14) guidée avec un écrou de commande (9), de façon que la vis, lors de l'insertion, entre en spirale dans le bouchon (4) par l'intermédiaire de l'écrou, qui reste stationnaire, puis le bouchon est extrait par l'application d'une force ascendante sur l'écrou. L'avantage mécanique apparaît pour les opérations d'insertion et/ou d'extraction. Aussi bien la force ascensionnelle que le couple de torsion appliqués sur la vis par l'écrou sont équilibrés par des forces autres que des forces de frottement appliquées par le bouchon, issues de forces de frottement entre la bouteille (2) et le bouchon. L'indépendance des mécanismes d'insertion et d'extraction permet de commander ces mouvements de façon indépendante, permet d'insérer la vis à différentes profondeurs et de l'extraire de différentes profondeurs, suivant la longueur du bouchon. Cela n'est pas possible dans les systèmes existants jusqu'à présent, qui s'appuient soit sur des cliquets à l'extrémité de la course à l'insertion, soit sur le frottement entre bouchon et vis.
Patent CA-2238887-C (CA)
Inventor: HEIKKILA KURT E
IPC: F04B1/12
Filed: 1998-05-26
Granted: 2008-04-22
Abstract: A siding assembly and method of manufacture are disclosed. Each siding unit is a profile of a composite material which includes a thermoplastic polymer and a cellulosic fiber. The preferred siding unit has a tapered thickness and a convex face. Each siding unit is interconnected to adjacent siding units with a tongue and groove mechanism. The preferred siding profile has a plurality of webs, and the exposed portion of the siding has a capstock layer to improve weatherability. The exposed width of the siding's face may be adjustable. The siding units are interconnected end-to- end by inserts which are positioned by means of an adhesive or thermal welding.
Patent CA-2239647-C (CA)
Inventor: MCFARLANE CLAUDE L
IPC: G01G19/08
Filed: 1998-06-05
Granted: 2005-05-31
Abstract: A material supporting apparatus is disclosed for supporting and permitting delivery of the materials. The apparatus includes a chassis having a first and a second end. A container is mounted upon the chassis and a stabilizing device is interconnected between the container and the chassis. The stabilizing device is disposed between the container and the chassis for stabilizing the container relative to the chassis. A restraining mechanism extends between the chassis and the container for permitting limited vertical movement of the container relative to the chassis. Also, a weight sensing arrangement is disposed between the container and the chassis for sensing the weight of the container and the materials added thereto and for determining therefrom the weight of the materials within the container. Additionally, a coupling device is disposed between the chassis and the container and positioned remote from the stabilizing device for assisting the stabilizing of the container relative to the chassis.
Patent CA-2254441-C (CA)
Inventor: CHERRY DONALD E
IPC: E21B17/20
Filed: 1998-11-20
Granted: 2003-07-08
Abstract: Apparatus for drilling lateral drainholes from a well casing comprises a flexible shaft having a bit at the lower end; the shaft extending through a shaft guide conduit anchored within the casing adjacent an oil-bearing formation. The "L" shaped guide conduit re-directs the shaft from an path parallel to the casing, through an elbow, to a path substantially perpendicular to the casing. The flexible shaft is formed of a helically wound outer coil spring and one or more helically wound and smaller inner coil springs residing concentrically therein. Each coil spring is closely fitted within the other. Each coil spring is wound opposite in direction to that of the next adjacent coil spring so as to interfere when under torsion. Bushings are located within the elbow for causing the shaft to flex and turn while permitting rotation and axial movement therethrough. A motor imparts torque into the top of the shaft, preferably through an intermediate driveshaft. The shaft is movable up and down within the casing. Accordingly, when the motor is rotating the bit, and the shaft is lowered, the shaft guide conduit supports the shaft, guides it through the elbow and directs the bit against the casing for cutting through the casing and then into the formation.
Patent CA-2258447-C (CA)
Inventor: WILLIAMS ROSCOE CHARLES
IPC: H03L7/093
Filed: 1995-04-05
Granted: 2003-02-04
Abstract: A stabilised voltage controlled oscillator circuit comprises a closed loop circuit containing a voltage controlled oscillator, a local oscillator and a harmonic mixer that mixes a stabilised local oscillator frequency signal and a radio frequency signal from the voltage controlled oscillator to obtain an intermediate frequency signal. An IF amplifier is connected to a linear frequency discriminator that provides an output signal to a summing amplifier, which is connected to the voltage controlled oscillator. The closed loop circuit uses the linear frequency discriminator to provide a feedback signal that stabilises the voltage controlled oscillator.
Patent CA-2258733-C (CA)
Title: Shopping cart mounted portable data collection device with tethered dataform reader
Inventor: O'HAGAN TIMOTHY P
IPC: H01M50/247
Filed: 1997-06-24
Granted: 2007-07-31
Abstract: A portable collection device (10) is adapted to be mounted to a shopping cart (18). The device (10) includes a housing (12) having a clamping assembly for releasably clamping the housing (12) to a pushing bar of a shopping cart (18). The housing (12) defines an interior region supporting device electronics. The device (10) further includes an interactive touch sensitive visual display screen (14) and a retractable, tethered dataform reader (22) releasably mounted on the housing (12). When mounted on the housing (12), an imaging assembly and an illumination assembly of the reader (22) are continuously actuated to read a dataform (30) presented to the reader (22). When removed from the housing (12), the reader (22) is actuated by depressing a trigger on the reader (22). The device (10) also includes a magnetic stripe reading assembly and communications circuitry including a radio transceiver module.