baber/WOPTO huggingface dataset:
Patent CA-2275033-A1 (CA)
Title: Biodegradable targetable microparticle delivery system
Inventor: SOKOLL KENNETH K
IPC: C08G63/78
Filed: 1997-12-19
Abstract: Copolymers designed for use as particulate carriers containing functionalizable amino acid subunits for coupling with targeting ligands are described. The copolymers are polyesters composed of .alpha.-hydroxy acid subunits such as D,L-lactide and pseudo-.alpha.-amino acid subunits which may be derived from serine or terpolymers of D,L-lactide <1 M G> and glycolide and pseudo-.alpha.-amino acid subunits which may be derived from serine. Stable vaccine preparations useful as delayed release formulations containing antigen or antigens and adjuvants encapsulated within or physically mixed with polymeric microparticles are described. The particulate carriers are useful for delivering agents to the immune system of a subject by mucosal or parenteral routes to produce immune responses, including antibody and protective responses.
Patent CA-2276097-A1 (CA)
Title: Cephem compounds
Inventor: YAMAZAKI HIROAKI
IPC: C07D501/18
Filed: 1997-12-25
Abstract: Cephem compounds of general formula (I), wherein formula (a) represents benzene, pyridine, pyrazine or a five-membered aromatic heterocycle (containing oxygen or sulfur as the ring atom), provided when is a five-membered aromatic heterocycle, R4 is absent; X and Y each represents hydrogen, CXY represents C=N-OR5 (wherein R5 represents hydrogen, halo-C1-6 alkyl or C3-7 cycloalkyl); R1 represents phenyl, furyl, thienyl, thiazolyl (which may be substituted by amino), tetrazolyl or thiadiazolyl; and R2, R3 and R4 each represents hydrogen, halogen, hydroxyl, nitro, C1-6 alkoxyl, trifluoromethyl, isothiuronium-C1-6 alkyl, amino-C1-6 alkyl, halo-C1-6 alkyl, morpholino, piperidino or piperazinyl.
Patent CA-2277332-A1 (CA)
Title: Dispersion-flattened optical fiber
Inventor: NISHIMURA MASAYUKI
IPC: G02B6/036
Filed: 1998-07-29
Abstract: A dispersion flat optical fiber having a structure for effectively suppressing the development of a non-linear optical phenomenon and suitable for a wavelength multiplexing soliton transmission using an optical amplifier. It has various characteristics at a wavelength of 1,550 nm, including a dispersion having an absolute value of not greater than 5 ps/nm/km, an effective sectional area of at least 45 µm2, a dispersion slope of not greater than 0.03 and a cut-off wavelength of at least 1.0 µm at a length of 2 m.
Patent CA-2281784-A1 (CA)
Title: Transparent liquid detergent containing sodium silicate
Inventor: UNO MINORU
IPC: C11D10/02
Filed: 1998-12-17
Abstract: A transparent liquid detergent which contains liquid sodium silicate, an alkyl ether sulfate salt anionic surfactant and a polyoxyethylene alkyl or aryl ether nonionic surfactant and which does not cause deposition and is inhibited from becoming cloudy even when undergoes temperature changes.
Patent CA-2282375-A1 (CA)
Title: Tapered convolute leaf spring for truck suspensions
Inventor: WILSON WILLIAM
IPC: B60G11/46
Filed: 1998-06-19
Abstract: A leaf spring (14) includes an eye (16) attached to a vehicle frame member (20). A front cantilever portion of the leaf spring (14) extends from the eye (16) to a predetermined point of the leaf spring (14). A  rear cantilever portion extends from the predetermined point to an end portion of the leaf spring (14). The rear portion of the leaf spring (14) includes a reverse arch portion. The front portion has a relatively high spring rate and the rear portion has a relatively low spring rate to provide comfortable riding conditions for the vehicle and roll stability for the suspension system.
Patent CA-2286891-A1 (CA)
Title: Method for reducing the power consumption of an incandescent light bulb
Inventor: CONRAD WAYNE ERNEST
IPC: H05B39/04
Filed: 1999-10-15
Abstract: A method and apparatus are provided for controlling the electrical power supply to an incandescent light source or bulb. The method comprises modifying the power supply with a pulse train. Parameters of the pulse train are selected in accordance with an algorithm. At least one parameter, for example frequency, pulse width or voltage, can be selected an optimized to improve the efficiency of the light bulb, whereby greater visible light is produced for a given electrical input.
Patent CA-2287461-A1 (CA)
Inventor: SAWAI TAKASHI
IPC: C21C7/00
Filed: 1999-02-17
Abstract: A steel for thin sheet having good workability which is significantly improved with respect to the occurrence of surface defect and a method for deoxidation which can be used for preventing nozzle clogging in continuous casting of the steel in a molten state. The steel comprises C: 0.0001 to 0.0030 %, Si: 0.03 wt.% or less, Mn: 0.05 to 0.30 wt.%, P: 0.015 wt.% or less, S: 0.001 to 0.015 wt.%, Al: 0.008 wt.% or less, Ti: 0.02 to 0.08 wt.%, Ca: 0.0005 to 0.0020 wt.% and N: 0.0005 to 0.01 wt.%, and optionally Nb: 0.001 to 0.02 wt.% and B: 0.0001 to 0.0010 wt.%, the residue being Fe and elements from impurities inevitably contaminated. The method is characterized in that it prevents the clogging of a casting nozzle by controlling the composition of non-metallic substances in the steel through the control of the amount of Ca and Al which are added as deoxidizers.
Patent CA-2287689-A1 (CA)
Inventor: SUGLA BINAY
IPC: G06F13/00
Filed: 1999-10-28
Abstract: A packet data filter which stores ordered rules and sequentially applies the rules to received data packets to determine the disposition of the data packet. The packet filter maintains a match count in memory which indicates the number of times each rule matched an incoming data packet. Periodically, at the initiation of a user, or based on operating parameters of the filter, the rules are automatically re-ordered based on the match count. As a result of the re-ordering, rules with higher match counts are moved earlier in the sequential evaluation order and rules with lower match counts are moved later in the sequential evaluation order. As such, rules which are more likely to match incoming data packets are evaluated earlier, thus avoiding the evaluation of later rules. In order to prevent a re-ordering which would change the overall security policy of the packet filter, pairs of rules are compared to determine if they conflict (i.e., the swapping of the two rules would result in a change in the overall security policy).  During reordering, the swapping of conflicting rules is prevented.
Patent CA-2288153-A1 (CA)
Title: Solid imaging process using component homogenization
Inventor: LAWTON JOHN A
IPC: B22F1/12
Filed: 1998-04-28
Abstract: Solid objects are formed in an imagewise layering process in which components of a dispersion (105) are homogenized to form an alloy. Imagewise exposure of the layers to radiation to form an alloy permits separation of the exposed, homogenized regions (108, 108') from non-exposed, non-homogenized regions. As each layer is formed and imagewise homogenized, contiguous layer regions (109, 109') are bonded together to form a homogenized, three-dimensional object which may be separated from surrounding dispersion (105).
Patent CA-2289248-A1 (CA)
Inventor: LIU YUN-CHUN
IPC: E04H15/44
Filed: 1999-11-10
Abstract: A portable tent comprises a closed loop resilient framework, an interconnection means, an upper shell, and a set of anchoring means. The resilient framework can be bent to form a predetermined shape. The interconnection means is fixed to the resilient framework so as to bend the closed loop resilient framework into the predetermined shape, which is a symmetrical shape that is substantially a U-shape while viewing from a first direction, and is substantially a arch-shape while viewing from a second direction that is perpendicular to the first direction. The upper shell is with its periphery fixed to the closed loop resilient framework.      The set of anchoring means is used for anchoring the closed loop resilient framework to the ground. This portable tent is self-erecting and can be easily set up, and it can be easily folded into a small space for transport.
Patent CA-2290332-A1 (CA)
Title: Optically pure androgen mediator
Inventor: GANT THOMAS GEORGE
IPC: A61P35/00
Filed: 1999-11-19
Abstract: This invention relates to an optically pure androgen mediator of the formula (I)   pharmaceutical compositions containing the stereoisomer and the use of the stereoisomer to aid in the prevention and restoration of for example, age-related decline in muscle mass and strength and the treatment of conditions which present with low bone mass in mammals, including humans.
Patent CA-2294185-A1 (CA)
Inventor: MACPHERSON DAVID
IPC: G01B9/02
Filed: 1998-07-01
Abstract: L'invention concerne un système d'étalonnage qui utilise les données d'erreurs d'un profileur d'ablation ou d'un dispositif de topographie pour régler les paramètres de fonctionnement d'un système d'ablation par laser. L'invention concerne également un profileur d'ablation qui sert à étalonner les dispositifs correcteurs de la vision par ablation de tissu cornéen, ce profileur fonctionnant selon un système à interféromètre à balayage de lumière blanche (SWLI: scanning white light interferometer). Le profileur mesure un échantillon (14) de matériau excisé et mappe les contours de cet échantillon (14) pour le comparer à une base de données relative aux contours souhaités. Le système SWLI comprend un nouveau procédé pour commander le déplacement d'une surface (22) de référence du SWLI au moyen d'un ensemble électro-aimant peu coûteux comprenant une commande de rétroaction capacitive, une source lumineuse à trou d'épingle pour améliorer les motifs d'interférence et un positionnement en dehors de l'axe de la source lumineuse et de la caméra pour éviter les réflexions spéculaires. Ce système comprend en outre un procédé pour préparer un échantillon de mesure transparent en appliquant un revêtement opaque derrière la surface et en utilisant une illumination de la surface frontale. Il est également possible d'utiliser des surfaces rugueuses pour obtenir les caractéristiques optiques requises.
Patent CA-2297130-A1 (CA)
Title: Fuel cell gas management system
Inventor: DUBOSE RONALD A
IPC: H01M8/04
Filed: 1998-05-22
Abstract: A fuel cell gas management system (10) including a cathode humidification system (30) for transferring latent and sensible heat from an exhaust stream (16) to the cathode inlet stream (14) of the fuel cell (26);  and anode humidity retention system (80) for maintaining the total enthalpy of the anode stream (20) exiting the fuel cell equal to the total enthalpy of the anode inlet stream (18); and a cooling water management system (130) having segregated deionized water and cooling water loops interconnected by means of a brazed plate heat exchanger.
Patent CA-2300767-A1 (CA)
Title: Simplified connecting structure of a curtain-type lighting string
Inventor: WON JEN CHEN
IPC: F21S4/10
Filed: 2000-03-16
Abstract: The present invention relates to a simplified connecting structure of a curtain-type lighting string, which includes a main wire and several separated strings thereon. A bypassed wire is provided between every two nearby string instead of the upward connecting wire and connects both ends respectively with a bottom bulb of both strings. So the needed amount of the connecting wire will be reduced and the assembly of the lighting strings becomes more convenient and simple.
Patent CA-2301254-A1 (CA)
Title: Noise cancellation system for active headsets
Inventor: JONES OWEN
IPC: A61F11/14
Filed: 1998-07-30
Abstract: An active headset system is provided with either two stereo jack plugs or a six pin connector (T1, T2, T3, T4, T5, T6) to provide compatibility with existing socket configurations for personal stereo equipment and headsets (28, 30) on aircraft. The number of connections between the active headset and the remote noise cancellation circuitry is reduced from eight to six through the use of a common contact, having a controlled impedance, that serves as an input connection to corresponding terminals of the two earphones of the active headset. According to another aspect of the present invention, the transients associated with plugging in or unplugging stereo jack plugs or up to a seven pin connector into an active headset may be overcome by a transient detector in the noise cancellation circuitry. Yet another aspect of the present invention concerns the powering of the noise cancellation circuitry whether the noise cancellation circuitry is placed inside the active headset or at least partially internal to a remote external device.
Patent CA-2301743-A1 (CA)
Title: Multi-layer films with syndiotactic barrier layer containing a wax
Inventor: PEET ROBERT GUTHRIE
IPC: C08L23/12
Filed: 1998-07-17
Abstract: An oriented multilayer film which comprises: (a) at least one layer comprising an olefin polymer such as isotactic polypropylene, and (b) a barrier layer adjacent layer (a) comprising a syndiotactic polypropylene homopolymer and at least 10% of a wax material such as polyethylene wax having a molecular weight in the range of 300-800 and a melting point between 52-72 deg. C.
Patent CA-2302315-A1 (CA)
Title: Cortical bone cervical smith-robinson fusion implant
Inventor: BOYD LAWRENCE M
IPC: A61F2/00
Filed: 1998-08-27
Abstract: An implant composed substantially of cortical bone is provided for use in cervical Smith Robinson vertebral fusion procedures. The implant is derived from allograft or autograft cortical bone sources, is machined to form a symmetrically or asymmetrically shaped (e.g, a substantially "D"-shaped) implant having a canal running therethrough according to methods of this invention, and inserted into the space between adjacent cervical vertebrae to provide support and induce fusion of the adjacent vertebrae. Osteogenic, osteoinductive or osteoconductive materials may be packed into the canal of the implant to expedite vertebral fusion and to allow autologous bony ingrowth.
Patent CA-2306889-A1 (CA)
Title: Method and device for producing combustible gas, synthesis gas and reducing gas from solid fuels
Inventor: WOLF BODO
IPC: C10J3/48
Filed: 1998-10-06
Abstract: The present invention relates to a process and an apparatus for generating fuel, synthesis and reduction gas. The reactor, according to the invention, comprises a combined fuel burner, a combustion chamber, an entrained flow gasifier, a heat compensating duct as well as a water bath, in which case the combined fuel burner is provided with means for the substoichiometric combustion of the gaseous low temperature carbonisation products and with vortex means flinging the liquid components towards the combustion chamber wall. The pulverised fuel can react endothermally with the gasifying agent from the combustion chamber into gasification gas, the residual coke being so swirled that it lowers the temperature of the combustion chamber wall below the slag melting temperature due to convective heat adsorption, a protective layer forming from solidified slag on the interior wall of the combustion chamber.
Patent CA-2307481-A1 (CA)
Title: Melt-infiltration process for fabricating article exhibiting substantial three-dimensional order and resultant article
Inventor: WILTZIUS PIERRE
IPC: G02B6/13
Filed: 2000-05-03
Abstract: A structure, e.g., a photonic band gap material, is provided exhibiting substantial periodicity on a micron scale, along with desirable density and mechanical integrity. A template comprising a colloidal crystal is provided, and into the interstitial space of the crystal is introduced a molten material. The introduction is typically performed and/or promoted by subjecting the crystal and molten material to a pressurized environment, which tends to force the molten material through the interstitial space of the crystal. The material is cooled, and the colloidal crystal particles are typically removed, e.g., by heating, etching, or dissolving. The resulting material constitutes a highly uniform, high-density structure, due to the invention's use of a continuous liquid phase to fill the void volume, as opposed to techniques that result in porosity and non-uniformities within the final structure.
Patent CA-2309218-A1 (CA)
Inventor: GUDMESTAD TARALD
IPC: E21B33/05
Filed: 1998-11-04
Abstract: An apparatus for launching at least two plugs, said apparatus comprising a mandrel (2), a lower plug (22) and an upper plug (21) releasably disposed with respect to said mandrel (2), wherein said upper plug (21) comprises a body (23) having a flow path (24) therethrough and a cap (25) for blocking fluid flow through said flow path (24) characterised in that said cap (25) is detachable from said body (23) in use if the upper plug (21) is prematurely ejected.
Patent CA-2311341-A1 (CA)
Inventor: SCHMITZ DAVE
IPC: B30B15/28
Filed: 2000-06-13
Abstract: An apparatus and method for automatically controlling the clutch torque of a mechanical press is utilized to lessen the impact of a die wreck condition. Press machine operation is continually monitored including slippage of the engaged clutch relative to the flywheel. The clutch is initially engaged at full engagement pressure. Clutch engagement pressure is then reduced until clutch slippage occurs. At the point at which clutch slippage occurs, clutch engagement pressure is increased until clutch slippage is eliminated. Clutch slippage continues to be monitored and if clutch slippage occurs again, a press fault is indicated. Since the operating tonnage of the mechanical press is kept to a minimum, press damage due to a die wreck is minimized.
Patent CA-2312942-A1 (CA)
Inventor: STRICKLER GARY R
IPC: C07C29/10
Filed: 1998-12-08
Abstract: L'invention concerne un procédé de fabrication de glycol dans un ensemble réacteur adiabatique, ce procédé consistant notamment à fournir de l'eau ainsi qu'un époxyde à au moins un réacteur adiabatique, dans des conditions aptes à faire réagir l'eau et l'époxyde de manière à former un courant d'un produit glycolé. Le réacteur adiabatique de cette invention contient un lit catalytique qui gonfle au cours de sa durée de vie utile, ce réacteur adiabatique fonctionnant par ailleurs dans des conditions suffisantes pour faire baisser la vitesse de gonflement de ce catalyseur par rapport à celle d'un ensemble réacteur non adiabatique. D'autres aspects de cette invention concernent en outre la division de l'alimentation entre plusieurs réacteurs adiabatiques, cette division étant combinée à un échange de chaleur entre ladite alimentation et les produits susmentionnés et des échangeurs thermiques, de sorte qu'un processus énergétique efficace permet d'obtenir un catalyseur présentant à la fois une stabilité satisfaisante et un gonflement réduit.
Patent CA-2313439-A1 (CA)
Title: Method and apparatus for providing telephone service using tdm switches and data transport networks
Inventor: SYLVAIN DANY D
IPC: H04M7/00
Filed: 2000-07-06
Abstract: A method and apparatus for providing telephone service using a data transport network is described. An inter-media gateway adapted to transfer voice-grade data to and from the data transport network is provided. The inter-media gateway is a trunk side network adaptor for TDM telephone switches adapted to operatively interconnect with a trunk side of the telephone switch to exchange internal call control messages and voice-grade pulse code modulated data. The integrated media gateway is addressable on the data transport network and is operatively interconnected to the data transport network to exchange signaling messages and data. The method comprises sending call setup messages associated with a telephone call between the telephone switches over the common channel signaling network of a switched telephone network and setting up a payload transport path over the data transport network in a backwards direction from a terminating telephone switch to an originating telephone switch. The advantages include network component reduction, simplified call set up, and reduced infrastructure and operating costs.
Patent CA-2315819-A1 (CA)
Title: Screening for novel compounds which regulate biological interactions
Inventor: SHORT JAY M
IPC: C12Q1/6897
Filed: 1998-10-15
Abstract: Disclosed is a process for identifying compounds having a specified activity of interest, which process comprises (i) introducing interacting molecules into a host cell under conditions to generate or repress a detectable signal;  and (ii) introducing a third compound or gene or genes encoding a third compound into the host cell from (i); and (iii) screening said host cell utilizing a method for detecting the inhibition or enhancement of interaction of proteins or other molecules in an in vivo or in vitro system. Another aspect of the present invention provides a process for identifying compounds of interest, which process comprises (i) generating one or more expression libraries derived from nucleic acid directly isolated from the environment;  and (ii) screening said libraries utilizing a method for detecting the inhibition or enhancement of interaction of proteins or other molecules in an in vivo or in vitro system.
Patent CA-2317394-A1 (CA)
Inventor: ALTSCHUL RANDICE-LISA
IPC: H04M1/725
Filed: 1998-02-24
Abstract: L'invention concerne un téléphone sans fil jetable, ainsi qu'un procédé d'utilisation d'un téléphone sans fil jetable, que l'on peut utiliser pour des communications téléphoniques uniquement pendant une période limitée et uniquement pour des communications téléphoniques effectuées à l'aide du téléphone sans fil jetable, période limitée pendant laquelle la somme des durées des communications téléphoniques atteint la durée de la période limitée, période limitée après laquelle le téléphone est rendu inopérant et est jeté.
Patent CA-2317632-A1 (CA)
Inventor: HAMERSKI MICHAEL D
IPC: C09J7/38
Filed: 1998-06-16
Abstract: A tape laminate comprising a support layer having first and second parts, and an anchor portion of one of its opposite major surfaces on each of the parts. The first and second parts of the support layer are disposed with the anchor portions on opposite sides of the support layer and in generally parallel relationship. The anchor portions can be bonded to the opposed surfaces of rigid objects so that the tape laminate supports one object from the other against a static force generally parallel to the anchor portions. One of those bonds is made by an attachment strip having a portion of its outer major surface defined by pressure sensitive adhesive and its inner major surface bonded to one of the anchor portions, and a manually engageable tab portion at one end. The attachment strip is stretchable by pulling its tab portion to release adhesive engagement of its outer major surface from an object to which it is adhered. The first and second parts of the support layer can be torn apart or pivoted away from each other to afford separation of rigid objects to which the anchor portions are bonded, thereby affording access to that tab portion and separation of the attachment strip from one of the rigid objects by stretching the attachment strip.
Patent CA-2322335-A1 (CA)
Inventor: PRINSEN PHILIP M
IPC: B01F5/06
Filed: 1999-02-09
Abstract: A purifier treating a batch of liquid with ozone uses a reversible pump (10) that directs liquid flow along different courses during forward and reverse pumping. In a forward mode, the pump (10) directs ozonized liquid through a purification course that purifies the liquid; and in a reverse mode, the pump (10) withdraws ozonized liquid from the purification course and redirects the withdrawn liquid to a reverse destination, which can be a purified liquid output (30) or a return of the withdrawn liquid to a liquid container (12).
Patent CA-2323210-A1 (CA)
Inventor: ALBELDA STEVEN M
IPC: A61K38/43
Filed: 1999-03-10
Abstract: L'invention concerne un procédé destiné à favoriser l'apport intracellulaire par des molécules effectrices. Ce procédé consiste à modifier certains anticorps à l'aide de biotine et de streptavidine, à conjuguer ces anticorps avec une molécule effectrice, et à apporter cet effecteur conjugué à une cible intracellulaire, spécifiquement reconnue par ledit anticorps.