baber/WOPTO huggingface dataset:
Patent CA-2241629-A1 (CA)
Inventor: FREIRE FRANCISCO JOSE
IPC: C25B3/28
Filed: 1996-12-17
Abstract: De l'halogénure de carbonyle est produit à partir de monoxyde de carbone et d'anions halogénure produits à partir de la conversion électrochimique d'halogénure d'hydrogène pratiquement anhydre. L'oxydation de l'halogénure d'hydrogène anhydre et la formation d'halogénure de carbonyle s'effectuent dans le compartiment anodique d'une cellule électrochimique, ce qui évite de recourir à de multiples équipements pour procéder à ces réactions. D'autre part, aucun catalyseur n'est nécessaire pour former des anions halogénure et fabriquer ensuite de l'halogénure de carbonyle, comme dans la technique antérieure. En outre, les risques sanitaires liés à la fabrication d'un halogénure de carbonyle, tel que le phosgène, à hautes températures à partir d'hydrocarbures chlorés en présence d'oxygène atmosphérique sont pratiquement éliminés. Par ailleurs, les anions halogénure produits par suite de l'oxydation de l'halogénure d'hydrogène anhydre sont secs, éliminant ainsi le recours à un réchauffeur avant la réaction des anions halogénure avec le monoxyde de carbone. La présente invention permet ainsi une production d'halogénure de carbonyle plus facile, plus sûre et moins onéreuse que les procédés de la technique antérieure.
Patent CA-2243226-A1 (CA)
Title: Three-phase electrical power measurement system
Inventor: STOFFREGEN PAUL
IPC: G01R21/133
Filed: 1998-07-15
Abstract: A measurement system includes a first transformer enclosed within a first housing and magnetically linked to a first cable where the first transformer senses changing current within the first cable and in response produces a first output voltage. A second transformer is enclosed within a second housing and magnetically linked to a second cable where the second transformer senses changing current within the second cable and in response produces a second output voltage.      A third transformer is enclosed within a third housing and magnetically linked to a third cable where third transformer senses a changing current within the third cable and in response produces a third output voltage. A measurement circuit is electrically connected to the combination of the first transformer to receive a first input signal representative of the first output voltage, the second transformer to receive a second input signal representative of the second output voltage, and the third transformer to receive a third input signal representative of the third output voltage. The measurement circuit calculates an output value representative of electrical power within the first, second, and third cables in response to receiving the first, second, and third input signals. The measurement circuit is enclosed within at least one of the first housing, the second housing, and the third housing.
Patent CA-2243680-A1 (CA)
Title: Cell stream replicating device
Inventor: MCBRIDE BRIAN E
IPC: H04L12/56
Filed: 1998-07-22
Abstract: The digital data stream (e.g. ATM cell stream) replicating device features an input port for receiving a continuous digital data stream at an input transmission rate; a broadcast mechanism for replicating the input digital data stream N times; N  output ports for transmitting each such replicated digital data stream through a separate output port at an output transmission rate at least equal to the input transmission rate; and a delay mechanism for introducing a relative delay for each said output digital data stream with respect to the input digital data stream such that the output streams are identical but out of phase with one another. Use of such a device enables a multi-port digital data communications device such as an ATM network switch to be tested using only one (expensive) performance test generator whilst still respecting the statistical multiplexing advantages of the mufti-port digital data communications device.
Patent CA-2243750-A1 (CA)
Inventor: ZEHNER GEORGE F JR
IPC: B42D15/00
Filed: 1998-07-20
Abstract: Unauthorized alteration of a document can be avoided in a secure document that includes a substrate (10) defining the body of the document. Indicia (24, 26, 30, 32, 36 and 40) located on the substrate (10) designate an area (42) to receive variable information by an impression. The variable information is that whose alteration is to be avoided. A chemical, carbonless imaging system (44) is disposed on the substrate (10) at the area (42) and is operative to form a visible image upon receipt of an impression and a transparent film (46) is located on the substrate (10) to cover the area (42). As a consequence of the construction, any attempt to alter an image appearing on the film (46) will be apparent from the original imaging of the chemical carbonless imaging system (44) or by smudging thereof indicating an alteration attempt.
Patent CA-2247621-A1 (CA)
Inventor: LAU WUNJI
IPC: G08B6/00
Filed: 1998-09-17
Abstract: Various apparatus and methods for an actuator and display using one or more shape memory springs.  A shape memory spring is heated and urges a pin to a first or extended position.  The pin may be supported in the first position by a supporting mechanism.  The shape memory spring is heated electically, and in some embodiments under the control of a processor.  The present invention may be used to display information provided in a user interface from a computer program, including text, numerical data, and graphical images.
Patent CA-2248256-A1 (CA)
Inventor: BEAUDRY EDWARD G
IPC: B01D71/16
Filed: 1997-03-11
Abstract: There is disclosed an asymmetric, hydrophilic, membrane having thin surface layer and a porous support layer having an embedded mesh embedded therein, which membrane is suitable for use in direct osmotic concentration (DOC) but not in reverse osmosis (RO).
Patent CA-2258894-A1 (CA)
Title: Blood collecting apparatus
Inventor: KUROKI HITOSHI
IPC: A61M1/02
Filed: 1999-01-14
Abstract: A blood collecting apparatus 1 of the present invention comprises a blood collecting needle 152; the blood collecting bag 10; a first tube 15 (15a, 15b) whose one end communicates with the blood collecting bag 10 and other end communicates with the blood collecting needle 152; the branch portion 92 provided on a portion of the first tube 15; a second tube 91 connected with the branch portion 92 at one end thereof and having a blood take-out port (sampling port) 71; and a flexible resin bag 20 including a third tube 31 communicating with the second tube 91. The flexible resin bag 20 is capable of accommodating air inside a part of the first tube 15 between the branch portion 92 and the blood collecting needle 152 and air inside the second tube 91 when the blood collecting apparatus is used.
Patent CA-2260157-A1 (CA)
Inventor: DINGLE STEVE S
IPC: F25B39/02
Filed: 1997-06-25
Abstract: A refrigerant distributor (54a) for use in a shell (24) and tube (60, 62, 64) evaporator (28) has a decreasing cross-sectional area which uniformly distributes refrigerant to the tube bundle (58) within the evaporator shell (24) and operates with a small distributor (54a) to evaporator (28) pressure drop.
Patent CA-2261651-A1 (CA)
Inventor: SAVOIE MARC Y
IPC: B23Q11/00
Filed: 1998-05-27
Abstract: An ophthalmic lens generating apparatus having a tool spindle comprising a motor, a lens surfacing tool and a coupling mounted between the motor and the lens surfacing tool for retaining the lens surfacing tool to the arbor of the motor. The apparatus of the present invention also comprises a first actuated table supporting the tool spindle in a movable manner along the longitudinal axis of the apparatus. A massive base is mounted beneath the first actuated table for supporting the table and for dampening radial vibrations of the tool spindle. The apparatus further comprises a lens holder for holding an ophthalmic lens in a plane substantially perpendicular to the longitudinal axis of the apparatus. A massive upright block is mounted on one end of the massive base behind the structural support suporting the lens holder, for dampening axial vibrations of the tool spindle and of the lens holder. The coupling of the tool spindle is a kinematic coupling having first and second disks having each substantial mass and radius of gyration. Thus, when the tool spindle rotates, both disks increase the nominal moment of inertia of the spindle and dampen the torsional vibrations of the spindle.
Patent CA-2262490-A1 (CA)
Title: Method and device for producing silicon-rich foundry iron
Inventor: HOFMANN WERNER
IPC: C21B13/02
Filed: 1997-07-25
Abstract: The invention relates to a process and a device for producing silicon-rich foundry pig iron. The process comprises the following steps:   a) silicon oxides and iron-carbon metals are introduced into a DC furnace as the charge;   b) the charge is maintained under a highly reductive atmosphere;   c) the column of material is guided annularly at least in the vicinity of the vessel base; and d) is exposed to the radiant heat from a heat source which is situated in the free area in the region where the annular column of material opens out above the furnace base.     The DC furnace, with an electrode which is arranged centrally, projects into the furnace vessel and is guided as far as the vicinity of the base, and a counterelectrode which is arranged in the base of the furnace vessel, is one in which the electrode projecting into the vessel is surrounded by a coaxially guided sleeve, the ratio between the external diameter (d) of the sleeve and the internal diameter (D) of the furnace vessel being d:D = 1:4 and the opening of the sleeve being spaced apart from the furnace-vessel base at a distance (a), where 2 x d <=- a <= 4 x d.
Patent CA-2264402-A1 (CA)
Title: Process for the preparation of 2-amino-4,5,3',4'-tetramethoxybenzophenone
Inventor: HEINZMANN ETIENNE
IPC: B01J23/42
Filed: 1999-03-04
Abstract: 2-amino-4,5,3',4'-tetramethoxybenzophenone of the formula:   (see fig. I) is prepared by mononitration of 3,3',4,4'-tetramethoxybenzophenone using nitric acid in the presence of acetic acid, and subsequent reduction of the nitro group. The compound is an intermediate in the synthesis of active ingredients against rheumatoid arthritis.
Patent CA-2264695-A1 (CA)
Title: Vascular graft
Inventor: JENSON MARK L
IPC: A61F2/06
Filed: 1997-10-06
Abstract: A graft (36) is used to supply blood to one or more coronary artery branches. The graft (36) is also usable as a peripheral re-vascularization prothesis to supply blood to other desired blood vessels. The graft (36) has an elongated tubular body (37) providing a continuous passage (40) for carrying blood from a high-pressure blood supply attached to the inlet end (41) of the graft (36) to a blood receiver attached to the outlet end (42) of the graft (36). One or more openings along the length of the body (37) allow blood to flow into the coronary artery or other blood requiring vessels. The graft (36) can also be constructed with no openings along the length of the tubular graft body (37). The flow and pressure of the blood in the passages are controlled by a restriction (44) providing a restricted passage (48) located remote from the inlet end (41) of the tubular body (37). Biological material such as proteins or tissue such as endothelial cells are applied to the graft (36) to improve the performance of the graft (36). In one embodiment, the restriction (44) is reinforced with a sleeve (17) to help hold the junction to the blood receiver in an open and unrestricted shape.
Patent CA-2264870-A1 (CA)
Title: Apparatus for the characterization of tissue of epithelial lined viscus
Inventor: RICHARDS-KORTUM REBECCA
IPC: A61B1/31
Filed: 1997-07-31
Abstract: A method and apparatus for characterizing tissue of epithelial lined viscus in vivo including, for example, the endocervical canal. The method comprises illuminating an interior surface of the viscus with electromagnetical radiation wavelengths to produce a plurality of fluorescence intensity spectra detecting a plurality of emission wavelengths from the fluorescence intensity spectra, and characterizing the epithelial viscus tissue as a function of the emission wavelengths. The apparatus includes a light source (17, 18) of emitting a plurality of electromagnetic radiation wavelengths, an optical probe (11) connected to the light source, the probe (11) being adapted to apply the plurality of electromagnetic radiation wavelengths to an interior surface of epithelial viscus tissue under test and to gather fluorescence emitted from the tissue, a detector (24, 26) connected to the probe for detecting at least one fluorescence spectrum emitted from the tissue under test and a programmed computer (29) connected to the detector for processing the at least one fluorescence spectrum according to a predetermined algorithm to characterize the tissue under test.
Patent CA-2265328-A1 (CA)
Title: Liquid level monitor
Inventor: FIEDLER ROBERT R
IPC: F16K7/00
Filed: 1999-03-12
Abstract: A liquid level monitor using a pressure actuated sensor to replace the open bubble tube. Air flows down the supply tube as in the bubbler, but rather than being released into the water, the air enters a chamber that has one movable wall, such as a diaphragm, that is acted on from the inside by pressurized air and from the outside by the hydrostatic head of the water. When the water pressure exceeds the chamber air pressure, the movable wall is pressed against an air outlet and does not allow air in the chamber to escape through the air outlet. One embodiment uses a diaphragm disposed over the air outlet; however, the concept may be extended to several other movable members, such as a piston with low actuation force. When the air chamber pressure exceeds the water pressure, the movable member moves away from the air outlet, releasing air and causing the chamber pressure to drop down to the water pressure.
Patent CA-2265831-A1 (CA)
Inventor: BLANVALET CLAUDE
IPC: C11D1/12
Filed: 1997-09-26
Abstract: L'invention concerne une amélioration apportée à une composition à cristaux liquides ou à des compositions en microémulsion plus écologiques, qui sont particulièrement efficaces pour l'élimination de salissures huileuses et grasses et dont le pouvoir dégraissant a été prouvé. Lesdites compositions contiennent un détergent anionique, un composé de type glycérol éthoxylé, un ingrédient hydrocarboné et de l'eau. L'ingrédient hydrocarboné principal est un composé odorant insoluble dans l'eau, utilisé dans des proportions suffisantes pour qu'une composition en microémulsion diluée de type aqueux contenant, en poids, 1 à 20 % d'un détergent anionique, 0,1 à 50 % d'un cotensioactif, 0,1 à 10 % du composé du type glycérol éthoxylé, 0 à 10 % d'un aldéhyde, 0,4 à 10 % de parfum, le solde étant de l'eau.
Patent CA-2267090-A1 (CA)
Title: Hydrogen absorbing alloy and process for preparing the same
Inventor: AKIBA ETSUO
IPC: C22F1/11
Filed: 1997-10-03
Abstract: A hydrogen absorbing alloy, particularly a hydrogen absorbing alloy which enables the regulation of a fine structure formed by spinodal decomposition in order to improve the flatness of a release equilibrium pressure in practical temperature and pressure ranges and is excellent in activation and in both absorption and release capacities, and a process for preparing the same. The alloy has a composition which is represented by the general formula: Ti x Cr y V z (wherein x, y and z are expressed in atomic % and x + y + z = 100) and falls within such a range that a body-centered cubic lattice phase appears excluding a C14 (a kind of representative structure of the Laves phases, an MgZn2 crystal structure) single layer region and the spinodal decomposition occurs. The alloy also has a regular periodic structure formed by the spinodal decomposition and an apparent lattice constant of 0.2950 to 0.3060 nm. The process for preparing the alloy comprises conducting solution treatment at 700 to 1500 °C for one min to 100 hr and then cooling treatment and/or aging treatment at 350 to 1200 °C for one min to 200 hr.
Patent CA-2267252-A1 (CA)
Inventor: URANO AKIRA
IPC: G02B6/036
Filed: 1998-08-25
Abstract: A dispersion shift fiber equipped with a structure for effectively suppressing a transmission loss caused by the occurrence of nonlinear optical effect and structural mismatching. A core region in the dispersion shift fiber comprises at least an inner core which is a glass region to which F is added in a predetermined amount and has an average .DELTA.n1 and an outer core which is a glass region provided between the inner core and a clad region and to which GeO2 is added in a predetermined amount and has an average relative index difference .DELTA.n2((.DELTA.n1). Structural mismatching occuring at the boundary of the glass regions is effectively suppressed by controlling the viscosity ratio at a temperature of drawing between the inner core and the outer core to within a predetermined range.
Patent CA-2268050-A1 (CA)
Title: Support de semences et de particules consommables
Inventor: KAZEMZADEH MASSOUD
IPC: A01C1/04
Filed: 1997-10-07
Abstract: L'invention consiste à fixer différentes semences, telles que des semences d'herbe, à des surfaces ou à des cavités de supports d'engrais de fabrication spéciale façonnés en différentes formes, telles que, par exemple, des sections transversales en forme d'étoile, des profils trilobés ou multilobés, ou des formes en coupelle ou présentant une cavité semblable. Cette forme et le procédé de fabrication de l'engrais produisent des gorges et des cavités ou des zones dans lesquelles on peut fixer la semence à l'engrais et la protéger contre la détérioration pendant le transport et la manipulation. Ce support d'engrais sert également de source de nourriture pour la semence, pendant que celle-ci est la plus vulnérable, à savoir, à sa sortie de la graine et les premiers jours après sa sortie. Dans un autre mode de réalisation, une matrice de support constituée par un polymère organique ou par un composé protéiné est recouverte de semence ou d'autres fragments comestibles servant à nourrir les oiseaux.
Patent CA-2268578-A1 (CA)
Inventor: LIHOTZKY-VAUPEL WOLFRAM
IPC: A23L7/109
Filed: 1999-04-12
Abstract: A method and an extruder for production of paste products, in which a milled product such as flour or a similar material is mixed as a dry component with a liquid, and the resulting dough mass is kneaded. The dry component is supplied to the extruder, and the liquid in the extruder is supplied to the dry component and mixed therewith to give the dough mass. The dough is completely prepared within the extruder, and at an outlet of the extruder is pressed into a desired paste product shape. This arrangement not only permits production of an efficient, hygienic paste or dough product, but also permits an exact setting of the proportion of air in the finished product.
Patent CA-2274045-A1 (CA)
Title: Repartiteur numerique distribue et technique afferente
Inventor: NOE AMANDA G
IPC: H04L12/937
Filed: 1997-12-04
Abstract: L'invention a trait à un répartiteur numérique distribué (10), lequel répartiteur comporte deux îlots d'interface réseau ou davantage (12) établissant la connexion avec le réseau de télécommunications. Ce répartiteur (10) comporte également un ou plusieurs noeuds de services répartis (18). Chacun de ceux-ci établit une connexion avec les îlots d'interface réseau (12). Ceux-ci sont à même de se transmettre mutuellement des données par le biais des noeuds de services répartis (18). Un système de gestion (14), qui est également connecté à chaque noeud (18) et à chaque îlot (12), transmet des données d'acheminement de configuration de matrice et de voie de télécommunication aux îlots (12) et aux noeuds (18).
Patent CA-2275370-A1 (CA)
Inventor: HOCK MARK R
IPC: B65D83/76
Filed: 1999-06-17
Abstract: A diaphragm 24 for attaching to a free edge of a perimetrical wall 18 of a pumping chamber 16 of a chassis 12 of a liquid containment and dispensing device 10, said diaphragm being preshaped to have a raised central portion 24a surrounded by a planar edge portion 24b. The raised central portion of the diaphragm permits the diaphragm, when secured to a free edge of the perimetrical wall, to flex with respect to the pumping chamber without leading to the formation of wrinkles in the planar edge portion. The diaphragm has an innermost layer 24c of LDPE, and the planar edge portion thereof is secured by heatstaking to the free edge of the perimetrical wall of the chassis, which is formed by molding from a plastic material. An aluminum crimp ring 26 is provided to tightly retain the planar edge portion of the diaphragm against the free edge of the perimetrical wall of the chassis.
Patent CA-2276294-A1 (CA)
Title: Shoe sole with liquid-powered ventilating fans
Inventor: LANDRY NORMAN
IPC: A43B7/08
Filed: 1999-06-23
Abstract: This invention relates to a product built into the sole of a shoe that will cool and dehumidify one's feet, providing superior comfort to the feet of the person wearing the shoe. The invention comprises two layers, one of which has a liquid-filled area with a liquid powered turbine and the other layer containing a built-in air fan or fans or other turbines which are powered by the liquid turbine responding to the liquid movement in the other layer. These two layers are molded or otherwise connected to a shoe sole.
Patent CA-2280092-A1 (CA)
Title: Method and apparatus of cooling product within a mold
Inventor: LUPKE MANFRED A A
IPC: B29C48/13
Filed: 1998-03-09
Abstract: A method of forming a plastic product (P) comprises extruding molten plastic into a mold (3, 4) having a mold wall with product shaping interior face. After shaping the product (P) in the mold (3. 4), the method includes introducing gas via a gas inlet (11) through the mold wall (3) onto the product (P) to cool both the product (P) and the mold (3, 4) and then discharging the gas from the mold at a location (19) remote from the gas inlet (11).
Patent CA-2282254-A1 (CA)
Title: Hydroxyazepanes as inhibitors of glycosidase and hiv protease
Inventor: WONG CHI-HUEY
IPC: A61P31/18
Filed: 1997-02-21
Abstract: Hydroxyazepanes display inhibitory activity with respect to glycosidase, with K i values from moderate to low micromolar range. Benzyl and 3,6-dibenzyl derivatives of hydroxyazepanes display inhibitory activity with respect to HIV protease. These compounds are synthesized either by chemoenzymatic or chemical methodologies. Methods are provided for producing a tetrahydroxyazepane with the formula: (see formula I)
Patent CA-2282416-A1 (CA)
Title: Light sensing device
Inventor: WULF JUERGEN
IPC: G01N21/64
Filed: 1997-12-04
Abstract: The present invention relates to a light scanning device for exciting and detecting an emission of secondary light, especially fluorescent light, of a sample, comprising a light generating device for generating scanning light in the form of a single light beam, a deflection unit used for effecting a deflection of the scanning light for scanning at least one subarea of the sample, said deflection being variable in at least one direction, an imaging unit for forming an image of the secondary light emanating from the sample, and a detection unit for detecting the secondary light. When a sample with a large surface to be rastered is subjected to fluorescence examination with high spatial resolution, undesirably long scanning times occur. For reducing the scanning time and for simultaneously maintaining the high resolution in the case of such a sample, the light scanning device according to the present invention comprises a division device for dividing the single light beam into at least two light beams. This has the effect that, instead of the former sequential scanning of the sample, a subdivision into fields is carried out, said fields being scanned simultaneously by the plurality of light beams. The scanning time can therefore be reduced in accordance with the number of the simultaneously scanned fields of the sample.