baber/WOPTO huggingface dataset:
Patent CA-2254873-A1 (CA)
Title: Electrochemical biosensors
Inventor: USALA ANTON-LEWIS
IPC: A61B5/1477
Filed: 1997-05-16
Abstract: An electrochemical biosensor for determining the level of a target chemical in a biological fluid includes an electrochemical system including an enzyme substrate which reacts with the target chemical to yield a system signal related to the concentration in the biological fluid of said target chemical. The biosensor includes a first membrane for immobilizing the enzyme substrate. The first membrane has a porosity permitting passage therethrough of the target chemical to react with the enzyme substrate and a surface exposed to the biological fluid characterized by electron donor site susceptible to facilitating attachment thereon of proteins and fibrin which impair the system signal. A second membrane is bonded to the electron donor sites of the first membrane.  The second membrane is formed of a phenyl based polymer having connecting hydrogen atom donors which bond to the hydrogen atom donors bonding to the electron donor sites at least sufficiently to form an outer surface on the first membrane exposed to the biological fluid consisting of phenyl rings without significantly changing the porosity provided by the first membrane.
Patent CA-2259124-A1 (CA)
Inventor: DEBACKER OLIVIER
IPC: C12N15/12
Filed: 1997-06-23
Abstract: La présente invention concerne une nouvelle famille d'antigènes précurseurs de rejet tumoral et les molécules d'acide nucléique codant pour ces derniers. Lesdits antigènes précurseurs de rejet tumoral sont appelés antigènes précurseurs de rejet tumoral GAGE et les molécules d'acide nucléique codant pour ces derniers sont appelées molécules codantes GAGE. On décrit diverses utilisations diagnostiques et thérapeutiques des séquences codantes et des antigènes de rejet tumoral, ainsi que leurs molécules précurseurs. On illustre également des antigènes de rejet tumoral.
Patent CA-2264343-A1 (CA)
Title: Method and apparatus for data management authentication in a clinical analyzer
Inventor: PERRY JOSEPH E
IPC: G06F21/31
Filed: 1999-03-03
Abstract: A method and apparatus are provided for data management authentication in a clinical analyzer. The clinical analyzer includes a sensor for receiving a user sample to be measured and a processor for performing a predefined test sequence for measuring a predefined parameter value. A memory is coupled to the processor for storing predefined parameter data values.      An authentication password is associated with each data transmission by the clinical analyzer and read by an associated computer system to validate each data transmission. The authentication password is generated by the clinical analyzer utilizing predetermined information in each data transfer.
Patent CA-2266449-A1 (CA)
Title: Gas turbine airfoil cooling
Inventor: ABDEL-MESSEH WILLIAM
IPC: F01D5/18
Filed: 1997-09-25
Abstract: A cooling system for airfoil vanes in a turbine of a gas turbine engine wherein the airfoil platforms have openings downstream of the insert tube for passing spent platform impingement coolant air into the airfoil cavity downstream of the insert tube to increase the pressure in the aft zone of the airfoil to improve the temperature gradient across the span of the airfoil.
Patent CA-2266781-A1 (CA)
Title: Piperazine based cytofectins
Inventor: WHEELER CARL J
IPC: C07D295/088
Filed: 1997-09-24
Abstract: The present invention relates to piperazine based amphilic cationic lipids useful for gene therapy, transfection, and introducing immunogenic compounds for the purpose of vaccination. The disclosed compounds have lipophilic moieties linked to the ring nitrogens. In addition, at least one of the ring nitrogens is quatranized and linked to a hydrocarbon having at least one heteroatom.
Patent CA-2268521-A1 (CA)
Title: Stock feed system for a multi-layer headbox and method in the operation of a multi-layer headbox
Inventor: LINSURI ARI
IPC: D21F9/00
Filed: 1997-10-09
Abstract: The invention concerns a stock feed system for a multi-layer headbox (10). A  stock concept (M1, M2 ...) is passed into each inlet header (11, 12, 13) in the multi-layer headbox (10), which stock concepts have been produced out of the same fresh stock (M) by adding to the fresh stock the necessary chemicals and fillers. The system comprises one single fresh-stock container (17), and there are stock lines (18a1, 18a2; 18a2.1, 18a2.3) into which the fillers, additives and equivalent are added in compliance with the requirements of each concept. The stock feed system of the multi-layer headbox comprises at least one such fibre distributor (200a1, 200a2, 200a3) by whose means long fibres are transferred out of the stock that forms the surface layer (a1; a2) of the paper into the stock that forms a layer placed into the interior of the paper, preferably the middle layer (b), in which connection fibres of shorter length, compared with the average distribution of fibres in the basic stock derived from the stock container (17), are allowed to remain in the surface layer (a1; a2) of the paperboard, and longer fibres, compared with the average distribution of fibres, are allowed to remain in the middle layer (b) and/or are transferred into the middle layer.
Patent CA-2268750-A1 (CA)
Inventor: HILLMAN JENNIFER L
IPC: A61P37/00
Filed: 1997-10-15
Abstract: The present invention provides a novel human P2X purinoreceptor (HPURR) and polynucleotides which identify and encode HPURR. The invention also provides genetically engineered expression vectors and host cells comprising the nucleic acid sequences encoding HPURR and a method for producing HPURR. The invention also provides for use of HPURR, and agonists, antibodies or antagonists specifically binding HPURR, in the prevention and treatment of diseases associated with expression of HPURR. Additionally, the invention provides for the use of antisense molecules to polynucleotides encoding HPURR  for the treatment of diseases associated with the expression of HPURR. The invention also provides diagnostic assays which utilize the polynucleotide, or fragments or the complement thereof, and antibodies specifically binding HPURR.
Patent CA-2269106-A1 (CA)
Inventor: BRIDEGUM JAMES E
IPC: F24H1/28
Filed: 1999-04-15
Abstract: A compact gas fired water heater is provided for recreational vehicles and other side wall installations, wherein the water heater is designed to have minimum width and height dimensions and at the same time have more internal heating surface for greater recovery and higher efficiency than water heaters of similar dimensions. The combustion chamber is comprised of two straight horizontal lengths of tube joined in the rear by a specially formed coupler which enables the bottom inlet and the top outlet of the tube to make a smaller radius turn than that permitted with a bent tube type combustion chamber.
Patent CA-2269327-A1 (CA)
Title: Use of anti-embryonic hemoglobin antibodies to identify fetal cells
Inventor: GOLBUS MITCHELL
IPC: G01N33/551
Filed: 1997-10-20
Abstract: An in vitro method of identifying or isolating fetal cells from a blood sample is described. Fetal nucleated erythrocytes or erythroblasts are identified by using an antibody or antibody fragment specific for embryonic hemoglobin or an embryonic hemoglobin chain. Once the fetal cells are identified, they can be treated to render the fetal nucleic acids or proteins available for identification or amplification. Detecting the occurrence or existence of selected fetal nucleic acids or proteins allows a quantitative or qualitative diagnostic or prenatal evaluation, including determining the sex of the fetus, determining chromosomal, single gene or protein abnormalities, and determining the presence or absence of particular genes, nucleic acid sequences or proteins.
Patent CA-2271305-A1 (CA)
Title: Liquefaction handpiece
Inventor: CAPETAN THOMAS G
IPC: A61M1/00
Filed: 1997-10-29
Abstract: A surgical handpiece having at least two lumens mounted to a body. One lumen is used for aspiration, the second lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is surrounded by an insulated heating element that heats the surgical fluid as it passes through the second lumen. The handpiece may also contains a device for delivering the surgical fluid through the second lumen in metered pulses of a defined volume.
Patent CA-2274001-A1 (CA)
Title: Measuring head for use in radiant energy flash measuring of the thermal diffusivity of samples
Inventor: RONCHI CLAUDIO
IPC: G01N25/18
Filed: 1997-12-22
Abstract: The invention refers to a measuring head for use in radiant energy flash measuring of the thermal diffusivity of heterogeneous samples (S) under employment of a probe beam (B) generated by a radiant energy generating means and a detector means for detecting a temperature rise of the sample (S), comprising a sample holder means (SH) for receiving the sample (S). The technical problem to be solved is to provide a measuring head offering the opportunity to align the sample (S) with the probe beam (B) in order to carry out local measurements of the thermal diffusivity in the axial direction of the sample (S) or to deposit the energy shot on the most suitable area of the sample (S), dependently on the given sample features. Therefore, according to the present invention, it is proposed to arrange the sample holder means (SH) movable in at least one direction (X, Y) perpendicular to the optical axis (AB) of the probe beam (B).
Patent CA-2283074-A1 (CA)
Title: Computer work station arm rests
Inventor: RUECKSTAEDTER HANS
IPC: G05G1/62
Filed: 1998-02-26
Abstract: The invention relates to (elastic or movable) arm rests for (mouse, keyboard or CAD) computer work stations, enabling users to work in an untiring manner without needing to worry about medical implications. Said arm rests are placed on the floor. At least one rotating joint is provided to facilitate (lower) arm movement. Ergonomics is improved by providing the inventive device with a certain degree of structural elasticity (specially with regard to the supporting legs).
Patent CA-2287108-A1 (CA)
Title: Materials and method of charge dissipation in space vehicles
Inventor: BALMAIN KEITH G
IPC: C08G79/14
Filed: 1999-10-22
Abstract: The present invention provides a method and materials for reducing or limiting charge accumulation and the resulting arc discharges in components used in space vehicles such as satellites prone to charge buildup due to exposure to a charge flux. The material is found in the poly(metallocene) family. In each member of this family, a metal atom is an integral part of the polymer chain, the whole structure being held together (and the interactions provided) by chemical bonds rather than by the proximity of the components in a heterogeneous mechanical mixture. In a homogeneous dielectric, the needed conductivity may be radiation-induced or it may be achieved as the result of doping. The components may be coated with, or alternatively fabricated from, a material including the poly(metallocene) as a constituent.
Patent CA-2287373-A1 (CA)
Title: Process for the production of powdered nickel
Inventor: KAGOHASHI WATARU
IPC: B22F9/28
Filed: 1999-02-16
Abstract: Chlorine gas from a supply nozzle is mixed with the vapor of nickel chloride and the mixed gas is supplied from a supply nozzle into a hydrogen gas atmosphere in a reduction reactor at a reduction temperature of 900 to 1100°C. The volume of chlorine gas to be mixed versus the vapor of nickel chloride is adjusted to a ratio of 0.01 to 0.5 moles per mole of the vapor of nickel chloride. The particle size of the nickel powder can be controlled appropriately, and also, uniformity of particle size, smoothability of surfaces of particles, and sphericity can be improved.
Patent CA-2288034-A1 (CA)
Title: Device for measuring fluorescence excited by light, and the use thereof
Inventor: LAU MATTHIAS
IPC: G01N21/85
Filed: 1998-05-12
Abstract: The invention relates to a device for measuring light-activated fluorescence of at least one coating that contains a fluorescent material, and its use for measuring fluid materials which cause fluorescence-quenching in at least one of the fluorescent coatings. To activate the fluorescence, at least one first light wave guide is directed onto at least one coating applied to a support and the fluorescent light is directed at a detector by means of at least one second light wave guide, in order to determine the intensity of the fluorescent light. The end faces of the different fluorescent light wave guides are then arranged, taking into account the numerical apertures of the different light wave guides and/or with reference to at least one coating containing a fluorescent material, in such a way that a local coordination of the measurable fluorescence intensity can be attained, and that the light source(s), light wave guides and the detector(s) are lodged in a measuring head.
Patent CA-2291353-A1 (CA)
Inventor: ROWE NEAL EDWARD
IPC: H01R9/24
Filed: 1999-12-01
Abstract: A terminal block has a molded electrically insulative housing with through compartments containing terminal members each having a rectangular planar front section with a tapped hole for a terminal screw and three male terminal blades extending rearward from edges of the rectangular planar front section. The rectangular front section seats on ledges formed by bands integrally molded on opposing side walls of the compartments. Barbs projecting laterally from two facing male terminal blades engage the molded bands to secure the terminal member in the compartment. Partitions extending transversely between the front openings of the compartments provide electrical isolation between the screw terminals, and extend laterally beyond the molded body of the housing at both ends of the partitions to form mounting shoulders, which together with shoulders on projections molded on the housing body, secure the terminal block in an opening in a mounting panel. A cover integrally connected by a living hinge to a wall extending along one end of the partitions controls access to the screw connections on the planar front section of the terminal members.
Patent CA-2291521-A1 (CA)
Title: Pressure relief valve and method of manufacturing the same
Inventor: BARTON RICHARD J
IPC: B60H1/24
Filed: 1999-12-03
Abstract: A flap-type pressure relief valve for venting of pressure out of, for example, an automobile passenger compartment has a flap assembly manufactured by a co-molding operation and inserted into a valve housing to block the flow of air therethrough. The valve flap assembly includes a flap carrier frame formed from a relatively rigid plastic in the first shot of a two-shot co-molding process, and at least one flap formed from a relatively flexible plastic in the second shot. The co-molding joins the flap to a first perimeter wall of the frame along an edge of the flap, and the flap is sufficiently flexible to bend about a line adjacent the edge. In a two flap version, a second flap co-molded into connection with a second perimeter wall of the frame. The resulting flap assembly may be easily connected with the separately-molded valve housing by securing the frame to the housing such that the flaps are positioned over valve seat within the housing. The flaps are co-molded into connection with the frame such that when the frame is secured to the housing to position the flaps over the air passages, the flaps are bent away from their as-molded configurations, thereby generating elastic force urging the flaps toward their valve seats.      The flaps may have rigid plastic stiffeners co-molded into connection therewith. The stiffeners are preferably formed simultaneously with the frame in the first shot of the co-molding process.
Patent CA-2296301-A1 (CA)
Title: Closure with extended seal member
Inventor: FURLONG MICHAEL PATRICK
IPC: B65D41/02
Filed: 1998-07-03
Abstract: A closure (10) having a sealing rib (14) projecting downwardly from the underside of its top portion (11). The first portion (15) of the sealing rib (14) increases in thickness as it extends away from the top portion (11). In another aspect, the invention relates to a closure (10) in which the sealing rib (14) has a third portion (18) that is substantially no thicker than the second portion (17) of the rib (14) and has a length longer, and preferably substantially longer, than its thickness. In the second aspect, the third portion (18) of the rib (14) is connected to the second portion (17) at or adjacent its free edge and extends generally in a direction away from the top portion (11). Upon attachment of the closure (10) with the neck (22) of a container, the third portion (18) will be displaced to lie between the end portion (23) of the neck (22) of the container and the top portion (11) of the closure (10).
Patent CA-2298470-A1 (CA)
Title: Emulsified bituminous binder
Inventor: BOUSSAD NADJIB
IPC: C08L33/04
Filed: 1998-08-05
Abstract: A bitumen emulsion comprising bituminous binder, emulsifier, and water. The bituminous binder comprises bitumen and an oxidised wax, and optionally one or more polymers. The incorporation of the oxidised wax into the bituminous binder provides modified bitumen with both a high softening point and a low enough viscosity to allow it to be emulsified. The emulsion may be used as a tack coat in applying a waterproofing layer to a roof base. The emulsion may be made using a static mixing emulsion process.
Patent CA-2300604-A1 (CA)
Inventor: BOECKER MONIKA
IPC: C11D17/00
Filed: 2000-03-10
Abstract: Detergent tablets distinguished both by high hardness values and hence transportation and handling stability and by excellent disintegration properties can be obtained if the tablets contain nonionic surfactants, phosphate builders and faujasite zeolite, the ratio of nonionic surfactant to faujasite zeolite being between 1:20 and 1:1.
Patent CA-2304881-A1 (CA)
Title: Topical compositions containing sialyl sugars and their derivatives
Inventor: DEFREES SHAWN
IPC: A61K8/00
Filed: 1999-07-26
Abstract: Sialyl oligosaccharides and derivatives useful for regulating inflammatory responses, and treating related disorders and conditions, and/or improving the texture or appearance of the skin, as well as topical pharmaceutical and cosmetic compositions containing sialyl oligosaccharide or derivatives and methods for their use are described. The sialyl oligosaccharides or derivatives of the present invention are also useful in topical compositions suitable for prophylactic or therapeutic treatment of disorders associated with the inflammatory response of cells in the skin.
Patent CA-2305642-A1 (CA)
Title: High-strength slider for a reclosable bag
Inventor: THOMAS TOBY R
IPC: A44B19/26
Filed: 1998-09-23
Abstract: A slider (30) is disclosed for straddling relation with a profiled plastic zipper (32) of a reclosable bag. The zipper (32) has first and second interlocking profiles, and the straddling slider (30) closes and opens the interlocking profiles by movement along the zipper (32). The slider (30) includes a transverse support member (40) and a pair of side walls (42, 44) extending downward from opposing sides of the support member (40). The side walls (42, 44) forming respective first and second shoulders (58, 60) extending inwardly toward each other. The first and second shoulders (58, 60) include respective first and second innermost ends (62, 64) facing and contacting respective adjacent portions of the reclosable bag below the respective first and second interlocking profiles. The first and second innermost ends (62, 64) define a tortuous path therebetween, and the adjacent portions of the reclosable bag pass through the tortuous path. The tortuous path is created by protrusions formed by at least one of the innermost ends.
Patent CA-2311299-A1 (CA)
Title: Hall effect seat belt tension sensor
Inventor: MILLER GREGORY S
IPC: B60R21/01
Filed: 1998-12-10
Abstract: A tension sensor (10) for a vehicle seat belt (12) comprises a base (14) having a pair of guide pin blocks (16) and (18) depending therefrom, and a plurality of spaced upper and lower guide pins, (20) and (22) respectively, for guiding the seat belt (12). A plunger housing (30) having an orifice (32) therein for acceptance of a movable plunger (40) is secured to the base (14).  The plunger (40) has an upper portion (42) shaped to allow the seat belt (12) to travel over the plunger (40) with minimal friction. A plurality of springs (46) are disposed between the base (14) and the plunger (40) to bias the plunger (40) against the lateral force of the seat belt (12) when under tension. A permanent magnet (50) secured to the plunger moves into close proximity to a Hall effect sensor (52) when the plunger (40) is depressed by the seat belt (12). The Hall effect sensor (52) has an output (54) responsive to the magnetic flux therein.
Patent CA-2314935-A1 (CA)
Title: Cosmetic makeup composition
Inventor: NAIK-SATAM PRAKASH G
IPC: A61K8/29
Filed: 1998-12-15
Abstract: A water-in-silicone cosmetic makeup composition includes a hydroxy acid, a sunscreen agent, a moisturizing agent, an antioxidant, a cosmetically acceptable pigment, an emulsifier, a silicone-containing compound and water.  The composition when applied to the skin protects the skin from ultraviolet light exposure, and it reduces the appearance of fine lines and wrinkles. The composition also is highly moisturizing and gentle enough for sensitive skin.  Methods of protecting the skin from ultraviolet light exposure and reducing the appearance of fine lines and wrinkles by topically applying this composition, as well as methods of making the emulsified compositions also are disclosed.
Patent CA-2315874-A1 (CA)
Title: Power transfer device
Inventor: KERR JOHN HUGH
IPC: F16H41/24
Filed: 1998-11-26
Abstract: A power transfer device for amplifying and transmitting torque consists of an impeller (14), a turbine (16), and a stator (18). A one-way clutch (32) responsive to impeller (14) rotational speed allows the stator (18) to rotate when the turbine is stationary or during high speed operation.
Patent CA-2317482-A1 (CA)
Inventor: DIVOUX JEAN-NOEL
IPC: H03K3/03
Filed: 1999-01-21
Abstract: The invention concerns an oscillator (20) designed to supply a periodic voltage (Vo) at a predetermined frequency (f). Said oscillator comprises; a reference source (23) capable of supplying a reference voltage (Vref), said reference source including a resistor (R) connected to said voltage; and supply means (24) for receiving the reference voltage and supply the periodic voltage at the predetermined frequency, the supply means having a first thermal coefficient (.alpha.24) such that said frequency can vary by the effect of temperature. Said oscillator is characterised in that the resistor is formed to provide the reference source with a second thermal coefficient (.alpha.23) equal to ther first thermal coefficient, such that the temperature has the same influence on the voltage and on the supply means, thereby ensuring a temperature-independant periodic voltage supply.
Patent CA-2317941-A1 (CA)
Title: Adenoviral vectors with modified capsid proteins
Inventor: ROMANCZUK HELEN
IPC: A61K48/00
Filed: 1999-01-15
Abstract: The present invention is directed to adenoviral vectors having modified capsid proteins which comprise heterologous ligands that improve and/or alter the infectious capability of the vector. Such ligands are capable of binding to target cells, and their inclusion into adenoviral vectors facilitates the binding and infectious properties of the vectors. In a preferred embodiment, the ligands are peptides, and the target cells are epithelial cells. The invention is also directed to novel heterologous ligands, to ligand-receptor complexes, and to compositions comprising the adenoviral vectors of the invention. Additional aspects of the invention include methods to use the adenoviral vectors of the invention to deliver transgenes to target cells.