baber/WOPTO huggingface dataset:
Patent CA-2259994-A1 (CA)
Inventor: MACHHAMMER OTTO
IPC: C07C51/44
Filed: 1997-07-09
Abstract: L'invention concerne un procédé de production d'acide acrylique ou d'acide méthacrylique comportant les étapes suivantes: (a) production d'un produit réactionnel gazeux renfermant de l'acide acrylique ou méthacrylique et ayant essentiellement la composition d'un mélange réactionnel issu de l'oxydation catalytique en phase gazeuse d'alcanes C3-/C4-, d'alcènes, d'alcanols et/ou d'alcanals et/ou de précurseurs de ceux-ci conduisant à la formation de l'acide acrylique ou méthacrylique, (b) absorption du produit réactionnel avec un mélange solvant renfermant au moins un lactame dissous dans au moins un solvant organique polaire, et (c) distillation du mélange solvant chargé du produit réactionnel pour obtenir un acide acrylique brut ou un acide méthacrylique brut et le mélange solvant.
Patent CA-2260694-A1 (CA)
Inventor: LAU WING CHEONG
IPC: E04B5/12
Filed: 1999-02-05
Abstract: A wood structural assembly that includes engineered wood elongate I-beams disposed in parallel and spaced apart relation and interconnected by bridge elements disposed therebetween with each bridge element itself being a selected length portion of an engineered wood I-beam.      The length of the selected length portion preferably corresponds in length to the spacing between the upper and lower flange of the elongate I-beam associated therewith.      The length extent of the selected length portion forming the bridge element is disposed vertically when associated with and connected to opposed web faces of adjacent parts of elongate wood I-beams. The bridging and beam structure is applicable to building roof structures and floor structures.
Patent CA-2261662-A1 (CA)
Title: Sorbefacients
Inventor: NAKAGAMI HIROAKI
IPC: A61K31/445
Filed: 1997-07-18
Abstract: Medicinal compositions for improving the absorbability in the digestive tract of drugs poor in the absorbability therein. The compositions contain drugs and anion exchange resins and show excellent absorbability in the digestive tract.
Patent CA-2261668-A1 (CA)
Inventor: KLEIBER HERBERT
IPC: G01D1/06
Filed: 1998-05-22
Abstract: The invention relates to a glide path transmitter device for an instrument landing system (ILS), comprising several antenna radiators (A1, A2, A3) via which high frequency signals containing various low-frequency modulated carrier and side band components are radiated, said components overlapping each other in the far field, where they form a guide signal which can be evaluated by aircraft. The phases of the carrier oscillations of the radiated high frequency signals forming the guide signal have a set relationship in respect to each other. The inventive device is characterized in that a separate digitally controlled modulator (45, 46, 47) is provided for each high frequency signal fed to an antenna radiator, said modulator modulating the phase and the amplitude of a high frequency oscillation (f1) fed thereto according to a given model and inputs the modulated high frequency signal into the antenna radiator (A1, A3, A2) allocated thereto, thereby reducing supply network expenditure.
Patent CA-2263659-A1 (CA)
Title: Preventive/remedy for frequent urination and urinary incontinence
Inventor: YAMAZAKI YOSHINOBU
IPC: A61K31/4184
Filed: 1997-08-11
Abstract: A novel preventive/remedy for frequent urination and urinary incontinence, containing as the active ingredient a .beta.3-adrenergic stimulating agent having a potent effect of relaxing human vesical smooth muscles.
Patent CA-2264310-A1 (CA)
Inventor: BARA ISABELLE
IPC: A61K8/98
Filed: 1999-03-25
Abstract: La présente invention a pour objet une émulsion eau-dans-huile stable, à usage cosmétique, pharmaceutique ou hygiénique, comprenant une phase aqueuse et une phase grasse comprenant une huile de silicone, caractérisée par le fait qu'elle comprend au moins une silicone oxyalkylénée substituée en .alpha.-.omega., l'émulsion ayant une viscosité allant de 100 cps à 200 poises, à 25 .degree.C et au taux de cisaillement de 200 s-1. Elle a également pour objet les compositions comprenant une telle émulsion, ainsi que ses applications dans le domaine cosmétique.
Patent CA-2268956-A1 (CA)
Title: A method and apparatus for imaging and sampling diseased tissue using autofluorescence
Inventor: DOMANIK RICHARD A
IPC: A61B5/00
Filed: 1998-10-14
Abstract: An apparatus for imaging body tissue utilizing autofluorescence includes an endoscope (30) having a distal end (32), proximal end (31) and a light processing unit (33) located at the proximal end (31). The tight processing unit accepts light in a spectral region from a light source (40) and directs the light through the endoscope to the tissue (5) located at the distal end (32). The light excites autofluorescence in the tissue. Optics (35) located in the distal end (32) of the endoscope collect the excited autofluorescence in a spatially resolved manner and routes it to the light processing unit (33) which separates the emitted light from any reflected excitation light. A plurality of imaging detectors (45) receive the emitted light. Each imaging detector is responsive to light in a different spectral band. An apparatus for sampling tissue includes an endoscopic device (30) comprising a sampling device (220) capable of taking a plurality of tissue samples, deposited in separate captive units (226).
Patent CA-2269883-A1 (CA)
Inventor: WELYGAN DENNIS G
IPC: D01F8/12
Filed: 1997-03-21
Abstract: Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments, such as sheath-core and side-by-side filaments, comprising a first plastic component and a second lower-melting component defining all or at least part of the material-air boundary of the filaments. The filaments can be made by melt-extruding thermoplastics to form hot filaments, cooling and solidifying the hot filaments, and recovering the solidified filaments without any substantial tension being placed thereon. Aggregations of the filaments can be made in the form of floor matting and abrasive articles.
Patent CA-2271489-A1 (CA)
Inventor: EDLINGER ALFRED
IPC: C22B7/04
Filed: 1998-09-08
Abstract: In a process for reprocessing steel slags and ferriferous materials, such as, for example, electric furnace and converter slag, fine ore, dust from steel production, rolling mill scales, and for producing pig iron and environmentally compatible slags, the ratio between the volumes of molten slag and iron bath is selected to be higher than 0.5 to 1, preferably of between 0.8:1 and 1.5:1, and SiO2-bearing materials, such as, for example, foundry or steel plant sand and/or fine ore, are added in order to adjust the slag ratio (CaO/SiO2) between 1.0 and 1.8, preferably between 1.2 and 1.8, with an Al2O3 content of between 10 and 25 wt. %, with respect to the slag. At the same time, hot wind and coal, optionally with an inert gas, in particular nitrogen, and possibly oxygen or hot air, are blown through the iron bath.
Patent CA-2271592-A1 (CA)
Inventor: CHAPMAN JOHN W
IPC: A01K89/0155
Filed: 1999-05-13
Abstract: The fishing reel includes a frame, a spool rotatably coupled to the frame, a sensor coupled to the frame, a microprocessor coupled to the sensor and a braking mechanism coupled to the frame. The sensor is configured to generate spool rotation signals representing rotation of the spool over time. The microprocessor is configured to compare the spool rotation signals to identify a peak time at which the spool has a maximum rotational velocity and to generate a braking signal after the peak time has been identified. The braking mechanism is configured to apply a braking force to the spool to slow rotation of the spool in response to the braking signal from the microprocessor. The braking mechanism preferably includes at least one magnet having a magnetic field coupled to a first one of the frame and the spool, at least one electroconductive member coupled to a second one of the frame and the spool within the magnetic field, and at least one electrical resistor coupled to said at least one electroconductive member. The electrical resistor has a resistance such that relative movement of said at least one magnet and said of at least one electroconductive member is retarded. The resistor preferably comprises an electrical component wherein rotation of the spool electrically powers the electrical component.
Patent CA-2273642-A1 (CA)
Title: Non vibration tread angle for rubber track
Inventor: BEATTY MATTHEW J
IPC: B62D55/24
Filed: 1999-06-04
Abstract: A track (10) for a vehicle is typically carried by a plurality of wheels (12, 14, 16). Tread-wheel vibration is created when the track (10) passes between a wheel and the ground over which the vehicle is traveling. A track (10) includes a plurality of external lugs (32) that engage the ground when the track (10) is in use. Each external lug (32) has a tread angle (a) indicating the angle at which the lug is disposed to the longitudinal axis (34) of the track (10), a tread pitch (P) and a lug width (H). A wheel (16) contacting the interior of the track (10) has a width (B). A tread design that minimizes tread-wheel vibration has the pitch (P) of the lugs (32) substantially equal to the wheel width (B) multiplied by the tangent of the tread angle (a).
Patent CA-2274758-A1 (CA)
Title: Stable glassy state powder formulations
Inventor: KUO MEI-CHANG
IPC: A61K9/72
Filed: 1997-10-14
Abstract: A powdered, dispersible composition having stable dispersibility over time is provided. The composition exhibits a characteristic glass transition temperature (T g) and a recommended storage temperature (T  s), wherein the difference between T g and T s is at least about °C (i.e. T g-T s is greater than 10 °C). The composition comprises a mixture of a pharmaceutically-acceptable glassy matrix and at least one pharmacologically active material within the glassy matrix. It may be further mixed with a powdered, pharmaceutically-acceptable carrier. It is particularly valuable in unit dosage form having a moisture barrier, in combination with appropriate labelling instructions. A  process for producing a powdered dispersible composition is also provided, wherein the process comprises removing the solvent from a solution comprising a solvent, a glass former and a pharmacologically active material under conditions sufficient to form a glassy matrix having the pharmacologically active material within the matrix.
Patent CA-2275510-A1 (CA)
Inventor: BLOM CLAES
IPC: G02B6/42
Filed: 1997-12-12
Abstract: With the intention of preventing damage to components as a result of heating of a chip and with the intention of limiting the affect of such heating, a chip carrying a waveguide connection or a fibre connection has been soldered firmly onto a metal surface or directly onto a metal lead frame, wherewith the thermal resistance will be much lower than in the case when the chip is soldered onto a ceramic or silicon carrier. The use of an embossing tool having an active embossing/stamping part (7) enables a microstructure that includes a V-groove (3) to be produced in the metal surface at low cost and with great precision for aligning a waveguide or a fibre with the chip. The embossing process may be carried out on the metal surface or directly on the metal lead frame. An embossing process can be automated relatively easily, since the material to be embossed can be worked in strip form. A construction method in which an optical chip is soldered to a metal carrier in which waveguide receiving or fibre receiving grooves have been embossed therein will improve heat dissipation and thus substantially increase the useful life of the finished component.
Patent CA-2279435-A1 (CA)
Inventor: DUFF MICHAEL
IPC: F15B1/26
Filed: 1999-07-30
Abstract: A circuit having a first pump port, a second pump port, a first cylinder port, a second cylinder port, and a network interconnecting the first pump port, the second pump port, the first cylinder port, the second cylinder port, the network being configured such that in response to fluid pressure greater than a first threshold at the first pump port, the second pump port is connected to the second cylinder port and in response to fluid pressure greater than a second threshold at the second pump port, the first pump port is connected to the first cylinder port.
Patent CA-2280962-A1 (CA)
Inventor: BONNEDAL DAG
IPC: H04B10/291
Filed: 1998-02-13
Abstract: An optical amplifier device intended for WDM light signals comprises a preamplifier (3) and a power amplifier (11) of the optical fiber amplifier type, which are connected in series and have gain curves dependent on the wavelength. A controllable attenuator (5) is connected between the amplifiers (3 and 11) and is controlled by a control device (7). The signal input to the preamplifier (3) has a low power and is amplified to provide an output signal where the signals of the input channels have been amplified with different gains. The input signal of the power amplifier (11) then has a larger power resulting in a gain characteristic different from that of the preamplifier (3). By adapting the attenuation of the attenuator (5) for variations in the input signal the gain characteristic of the power amplifier (11) can be set so that the signal output from the amplifier device has a spectral dependence that is the same as the original spectral dependence obtained without variations. Also, the same spectral dependence can be maintained when the pump light power of the power amplifier is changedand then the total amplifier gain is changed, by adapting the attenuation of the attenuator (5) so that the gain of the power amplifier is not changed. In the amplifier the lower possible noise from the preamplifier stage is added to the input signal and the full output power is always available from the power amplifier. If the input signal is e.g. increased the SNR of the signals passing through the amplifier is correspondingly improved. This improves the performance of an optical network in which the amplifier is used.
Patent CA-2281657-A1 (CA)
Title: Applying an optical fiber to a substrate
Inventor: HESSELBOM HJALMAR
IPC: G02B6/44
Filed: 1998-02-18
Abstract: In applying an optical fiber (1) to a substrate (3) coated with an adhesive, a supply of the optical fiber is located wound around a reel (13). The optical fiber is fed in a loose loop (17) providing a fiber magazine from the reel (13) to a collet (9) or nozzle, from which the optical fiber is passed to a hold-down means (11) having a non-rotating bottom surface. The hold-down means (11) presses the fiber against the surface of the substrate (3). The reel (13), collet (9) and the holding-down means (11) are moved so that the contact point at the substrate surface is moved along a desired path, where the optical fiber (1) is to be placed. This allows that the fiber is applied with small radii of curvature and with a minimum of mechanical stress. A fiber cutter (23) is provided upstream the collet (9) and it can cut the fiber at the places where it is to end so that no loose fiber end portions are produced. A fiber feeder (21) is provided behind the cutter (23) to feed more fiber after it has been cut.
Patent CA-2282972-A1 (CA)
Title: Variable output coupling laser
Inventor: MILLER DWAYNE R J
IPC: H01S3/106
Filed: 1999-09-22
Abstract: A method and circuit is disclosed for providing a control signal to a laser cavity controller. The cavity has two completely reflective surfaces. A long lived laser medium stores energy within the cavity. A computer generated waveform generated from enough values to appear substantially smooth after being amplified is provided to a control circuit having a Pockets cell or a Bragg cell. By controlling the amplitude of the computer generated waveform, the output pulse of the laser cavity is controlled.
Patent CA-2283642-A1 (CA)
Inventor: VEECH RICHARD LEWIS
IPC: A23L33/00
Filed: 1998-03-17
Abstract: Compositions comprising ketone bodies and/or their metabolic precursors are provided that are suitable for administration to humans and animals and which have the properties of, interalia, (i) increasing cardiac efficiency, particularly efficiency in use of glucose, (ii) for providing energy source, particularly in diabetes and insulin resistant states and (iii) treating disorders caused by damage to brain cells, particularly by retarding or preventing brain damage in memory associated brain areas such as found in Alzheimer's and similar conditions. These compositions may be taken as nutritional aids, for example for athletes, or for the treatment of medical conditions, particularly those associated with poor cardiac efficiency, insulin resistance and neuronal damage. The invention further provides methods of treatment and novel esters and polymers for inclusion in the compositions of the invention.
Patent CA-2285510-A1 (CA)
Title: Cylindrical helical seamed tube and method and apparatus therefore
Inventor: AKINS EDWARD A
IPC: B23K11/06
Filed: 1999-10-06
Abstract: A cylindrical helical seamed metal tube wherein the seam thereof is at an angle of between 1 and 25 degrees with respect to the axis of the tube. A method of making the tube comprises the steps of continuously feeding the metal strip into a tubing former to form the metal strip into a helical tube with the leading and trailing edges juxtaposed, the feeding such that the strip longitudinal axis is at a substantially constant acute angle with respect to the tube longitudinal axis, of between 1 and 25 degrees. After the tube is substantially formed applying pressure on at least the leading edge, leading portion, trailing edge and trailing portion in the direction of the cylindrical wall such that same substantially conform to the cylindrical wall. The juxtaposed leading and trailing edges are fused together to form a fused seam, and maintained in a juxtaposed position until the seam cools sufficiently to maintain the juxtaposed position. A apparatus for making the tube is also provided.
Patent CA-2285711-A1 (CA)
Inventor: LOESCH KURT
IPC: G02B6/12
Filed: 1999-10-08
Abstract: In transparent optical communications systems, optical switches are required to switch over the incoming optical signals to one of a plurality of outputs. The object of the invention is to provide an optical switch which facilitates high switching speeds, attenuates passing-through light to the least extent possible, and moreover is cost-efficient and reliable.      In accordance with the invention, a plurality of glass waveguides (GWL1...GWL4) are arranged in a first plane. In an overlying plane there is arranged at least one polymer waveguide (PWLA) which forms an acute angle with the glass waveguides. Vertical coupling regions are formed where the polymer waveguide intersects the underlying glass waveguides. The coupling properties can be selectively influenced with the aid of heating electrodes (EA1...EA4;      EB1...EB4). To switch over light from one glass waveguide into another, the temperature of the vertical coupling regions is set such that light is coupled up from the one glass waveguide into the polymer waveguide, is guided therein, and is coupled down into the desired glass waveguide in another coupling region.
Patent CA-2286461-A1 (CA)
Inventor: KHALAF NAZER K
IPC: C12N11/00
Filed: 1998-04-10
Abstract: The present invention relates to cross-linked protein crystals characterized by the ability to change from insoluble and stable form to soluble and active form upon a change in the environment of said crystals, said change being selected from the group consisting of change in temperature, change in pH, change in chemical composition, change from concentrate to dilute form, change in oxidation-reduction potential of the solution, change in the incident radiation, change in transition metal concentration, change in fluoride concentration, change in free radical concentration, change in metal chelater concentration, change in shear force acting upon the crystals and combinations thereof. According to one embodiment of this invention, such cross-linked protein crystals are capable of releasing their protein activity at a controlled rate. This invention also provides methods for producing such cross-linked protein crystals, methods using them for protein delivery and methods using them in cleaning agents, including detergents, pharmaceutical compositions, vaccines, personal care compositions, including cosmetics, veterinary compositions, foods, feeds, diagnostics and formulations for decontamination.
Patent CA-2287408-A1 (CA)
Title: Endolumenal stent-graft with leak-resistant seal
Inventor: LAU LILIP
IPC: A61F2/06
Filed: 1997-12-09
Abstract: An implantable medical device has a tubular member and a sealing member secured to an outer surface of the tubular member. The tubular member is expandable to engage an endolumenal wall and has a lumen for providing an artificial conduit for flow through an endolumenal space defined by that wall.  The seal member occludes flow around the tubular member between the outer surface and the endolumenal wall. One suitable tubular member for use in the present invention is a stent-graft which may be bifurcated for use in protecting vascular wall malformations adjacent to vascular bifurcations against endolumenal pressure and flow. The seal member may be a flange that is oriented on the outer surface at one end of the tubular member as a one-way valve against flow. Multiple seal members may be used, either on opposite ends of the tubular member or in series at one end therof. Where anchors are used to secure the tubular member to the endolumenal wall, the seal member is positioned to protect against flow through leakage paths formed at localized areas of deformation in the tubular wall adjacent to the anchors. One or more seal members may also be used with two or more tubular members to prevent flow through endolumenal spaces that remain open to flow due to gaps between the multiple, parallel tubular members.
Patent CA-2290539-A1 (CA)
Inventor: PICKARD DAVID MICHAEL
IPC: F27D1/00
Filed: 1998-05-18
Abstract: The invention relates to a method for producing refractory compositions and more particularly to a method for producing castable refractory compositions which comprises combining appropriate quantities of bulk particulate refractory aggregates substantially without pre-mixing; separately adding to the aggregate system an appropriate quantity of a pre-blended binder composition; mixing the aggregate system and the pre-blended binder composition in a mixer; and discharging the refractory composition from the mixer.
Patent CA-2293794-A1 (CA)
Title: Contre-ecrou, et outil pour fixer et enlever ledit contre-ecrou
Inventor: KIOKA HIROMICHI
IPC: F16B39/14
Filed: 1998-06-12
Abstract: Afin de fabriquer un contre-écrou, on forme une pluralité d'ailettes flexibles à partir d'un matériau en plaque élastique de façon qu'il présente au centre une section transversale concave, que la partie plaque latérale périphérique externe ait une forme polygonale comme l'écrou et que la partie plaque inférieure plane soit divisée dans le sens de la circonférence d'un trou d'écrou central d'un écrou; on recourbe les pointes des ailettes flexibles vers la partie interne d'une section transversale concave, de façon à former un filetage d'écrou dans lequel les extrémités des ailettes entrent en contact avec un goujon de façon à s'y intégrer; et on abaisse les parties dirigées vers le bas des racines des ailettes flexibles dans le sens de fixation, de façon que la pression de contact sur lesdites parties aplatisse les ailettes par rapport au goujon afin de bloquer l'écrou.