baber/WOPTO huggingface dataset:
Patent CA-2165683-A1 (CA)
Inventor: LEALMAN IAN FRANCIS
IPC: H01S5/00
Filed: 1994-07-11
Abstract: A semiconductor device, preferably  a laser device such as a signal generator, a signal amplifier or a sig-nal detector e.g. a distributed feedback laser, which is implemented in III/V semiconductors.   Such devices of-ten require a barrier layer to encourage current flow to pass through the localised p/n-interface and this invention provides the barrier layer in the form of a layer of hole trapping semiconductor material located between and in contact with two p-type layers.  III/V semiconductors con-tain at least one of indium, gallium and aluminium  and at least one of phosphorus and arsenic but the preferred devices ate laser devices implemented in various types of indium phosphide except for the active zone wherein pho-tons are generated.  The active zone is preferably formed of ternary and/or quaternary semiconductors. In the pre-ferred structures the barrier layer is formed of chromium doped indium phosphide which is located between two layers of p-type indium phosphide.  Alternative structures have (a) titanium doped indium phosphide between two layers of p-type indium phosphide.
Patent CA-2165921-A1 (CA)
Inventor: DANCE MARK N
IPC: A61F2/46
Filed: 1994-06-21
Abstract: The correct alignment and orientation required for a knee prosthesis during total knee arthroplasty surgery is carried out by directly locating the centers of rotation of the head of the femur and ankle. These centers of rotation are combined with easily identified landmarks on the distal femur and proximal tibia to simply and accurately define the actual weight bearing axis of the patient's limb.
Patent CA-2166072-A1 (CA)
Title: Polyisocyanate composition
Inventor: PILLE-WOLF WOLFGANG
IPC: C08G18/64
Filed: 1994-06-09
Abstract: Polyisocyanate composition comprising a zinc or tin (bis)maleate ester, for use in binding lignocellulosic materials.
Patent CA-2166881-A1 (CA)
Inventor: HADDAD KENNETH ROBERT
IPC: H04B1/16
Filed: 1995-05-05
Abstract: Radiotelephones often are powered by batteries (12). When a radiotelephone is bumped, the battery (12) can lose electrical contact with the radiotelephone. When power is interrupted (40), a timer is started (42). When the power is reapplied (44), the timer is sampled (46) and compared against a predetermined period of time. If the power was interrupted for a short time, then the radiotelephone is turned on (50). If the power was interrupted for a long time, then the radiotelephone stays off (48). The timer in the circuit is implemented as an RC circuit (26) starts to discharge. If the voltage level falls below Vref, the radiotelephone will not turn on when the power is reapplied.
Patent CA-2167072-A1 (CA)
Inventor: VASLIN SOPHIE
IPC: C08K5/00
Filed: 1994-07-11
Abstract: L'invention concerne un latex fluorescent dont les particules contiennent encapsulés au moins un fluorochrome hydroprobe A (accepteur) et au moins un fluorochrome hydroprobe D (donneur), A étant différent de D et l'émission du fluorochrome D permettant sous l'action d'un rayonnement lumineux d'exciter le fluorochrome A. Elle concerne également un procédé d'obtention dudit latex et l'application de celui-ci comme marqueur, notamment en biologie.
Patent CA-2169189-A1 (CA)
Inventor: DUNSMORE CLAY ALLEN
IPC: H05B41/32
Filed: 1995-06-23
Abstract: Cette invention se rapporte à un flash électronique qui comprend un circuit de charge auto-oscillant, un déclencheur à action momentanée servant à faire démarrer les oscillations du circuit afin de charger un condensateur de flash, ainsi qu'un dispositif capteur de tension couplé directement entre le circuit et le condensateur de flash et servant à interrompre les oscillations lorsque le condensateur est entièrement chargé. Ce capteur de tension comprend une diode Zener montée en série avec un indicateur lumineux à néon, ledit capteur se commutant sur un transistor pour relier à la terre le circuit de charge et pour interrompre les oscillations lorsque le condensateur est totalement chargé. En actionnant le flash automatiquement, on fait redémarrer les oscillations et on recharge le condensateur de flash. Un procédé pour recycler un appareil photographique jetable équipé d'un tel flash électronique est également décrit.
Patent CA-2169822-A1 (CA)
Title: Synthesis of speech using regenerated phase information
Inventor: GRIFFIN DANIEL W
IPC: G10L25/93
Filed: 1996-02-19
Abstract: The spectral magnitude and phase representation used in Multi-Band Excitation (MBE) based speech coding systems is improved. At the encoder the digital speech signal is divided into frames, and a fundamental frequency, voicing information, and a set of spectral magnitudes are estimated for each frame. A spectral magnitude is computed at each harmonic frequency (ie. multiples of the estimated fundamental frequency) using a new estimation method which is independent of voicing state and which corrects for any offset between the harmonic and the frequency sampling grid. The result is a fast, FFT compatible method which produces a smooth set of spectral magnitudes without the sharp discontinuities introduced by voicing transitions as found in prior MBE based speech coders. Quantization efficiency is thereby improved, producing higher speech quality at lower bit rates. In addition, smoothing methods, typically used to reduce the effect of bit errors or to enhance formants, are more effective since they are not confused by false edges (i.e.  discontinuities) at voicing transitions. Overall speech quality and intelligibility are improved. At the decoder a bit stream is received and then used to reconstruct a fundamental frequency, voicing information, and a set of spectral magnitudes for a sequence of frames. The voicing information is used to label each harmonic as either voiced or unvoiced, and for voiced harmonics an individual phase is regenerated as a function of the spectral magnitudes localized about that harmonic frequency. The decoder then synthesizes the voiced and unvoiced component and adds them to produce the synthesized speech. The regenerated phase more closely approximates actual speech in terms of peak-to-rms value relative to the prior art, thereby yielding improved dynamic range. In addition the synthesized speech is perceived as more natural and exhibits fewer phase related distortions.
Patent CA-2170149-A1 (CA)
Inventor: HARVEY SARAH
IPC: C22B11/08
Filed: 1994-09-15
Abstract: A powerful reducing agent such as hydrazine monohydrate is added to the standard eluent solutions such as NsOH-NaCN with or without alcohol. The kinetics of elution of gold or of silver are thus markedly enhanced.
Patent CA-2170898-A1 (CA)
Inventor: SCHRADER DAVID
IPC: C08L51/00
Filed: 1994-08-04
Abstract: L'invention se rapporte à des résines de polystyrène à résistance aux chocs élevée qui associent de manière singulière et bénéfique des caractéristiques de résistance et de brillance. Ces résines contiennent de petites particules (c-à-d 0,1 à 0,4 microns) de caoutchouc ayant la forme de capsules combinées à des particules de caoutchouc relativement petites (c-à-d 0,25 à 1 micron) ayant une configuration enchevêtrée. Il s'est avéré que ces résines pouvaient avoir des valeurs de résistance aux chocs selon Izod comprises entre 2,5 et 3,5 pied-livre/pouce (133,4 à 186,7 J/m), et supérieures à une grosseur de caoutchouc moyenne volumique globale inférieure à 0,4 micron avec des valeurs de brillance correspondantes dépassant 90 %.
Patent CA-2171542-A1 (CA)
Inventor: ANDERSON CAROLYN MARIE
IPC: C09J153/02
Filed: 1994-09-29
Abstract: An improved hot melt adhesive with low self-adhesion.  The adhesive is useful for disposable articles and employs a S-EB-S block copolymer.  The adhesive does not require a release liner and has superior stay-in-place properties.
Patent CA-2172913-A1 (CA)
Title: N-acylpiperazine derivative, antibacterial drug, and anti-ulcer drug
Inventor: NISHINO CHIKAO
IPC: A61P31/04
Filed: 1996-03-28
Abstract: An N-acylpiperazine derivative or a salt thereof in accordance with the present invention is represented by the following formula 1:     wherein R1 represents a lower alkyl, hydroxy lower alkyl, lower acyl, or arylcarbonyloxy lower alkyl group; R2 represents hydrogen atom or a lower alkyl, lower alkoxy, lower alkenyl, amino, or nitro group; R3 and R4, which are identical to or different from each other, represent hydrogen atoms, halogen atoms, or cyano, nitro, lower alkyl, or lower alkoxy groups; and n represents 0 or 1. The N-acylpiperazine derivative has anti-ulcer effect or an antibacterial activity against Helicobacter pyroli to be available for prevention or cure of ulsers.
Patent CA-2173200-A1 (CA)
Title: Improvements in non-spectrophotometric measurement of analyte concentrations and optical properties of objects
Inventor: SODICKSON LESTER
IPC: G01N21/35
Filed: 1994-09-26
Abstract: Improvements in non-invasive detection methods for glucose and other constituents of interest in a sample have been developed. The apparatus and methods of the invention provide an analog of color perception of human vision, preferably in the near infrared region, replacing spectrophotometers and narrow band sources used in other non-invasive near infrared detection methods. A plurality of detector units are used, each covering a broad and overlapping region of the detected spectrum, paralleling color perception and colorimetry. The improvements are primarily concerned with improving the signal-to-background (or noise) ratio such that the data stream is improved. These improvements use congruent sampling, comparison of different data streams from different sample portions or filter sets, using an interrogation system with sufficient speed to allow testing of arterial blood, and using a filter with a spectral structure. In some circumstances, a neural net is used for analysis, allowing the system to learn. A novel method for background discrimination is also described.
Patent CA-2173759-A1 (CA)
Title: Sanitary bird feeder
Inventor: MATTSON ROBERT DANIEL
IPC: A01K39/01
Filed: 1996-04-10
Abstract: It is a common design in wild bird feeders to house the seed in direct contact with the materials of manufacture of the feeder, these materials serving as the reservoir and dispenser of the seed. In this invention, the feeder is designed only to house a separate plastic reservoir and a separate plastic dispenser tray, such that the seed, therein, does not contact the common materials of manufacture of the feeder.
Patent CA-2174777-A1 (CA)
Title: Gelatin capsule fill able to foam
Inventor: SUGDEN KEITH
IPC: A61K9/48
Filed: 1994-10-28
Abstract: A pharmaceutical product for the treatment of reflux or oesophagitis,  gastritis or peptic ulceration in the form of a chewable soft gelatine capsule with a fill comprising (a) polymeric material selected from alginic acid, alginates, pectin, xanthan, gellan, carageenan and mixtures thereof, (b) a carbonate or bicarbonate salt; (c) an oil-based or hydrophilic based liquid vehicle; wherein on oral ingestion by a patient the gelatine capsule shell ruptures and the fill reacts with the acid contents of the stomach to produce a carbonated floating gelatinous raft of specified rigidity.
Patent CA-2175664-A1 (CA)
Title: Method and composition for disinfecting and solidifying liquid waste
Inventor: MURPHY WILLIAM J
IPC: A01N35/02
Filed: 1994-11-16
Abstract: The method of disinfecting and solidifying an aqueous waste containing is provided in which dry glutaraldehyde is used as the disinfectant.  In preparing the product for use in the method dry glutaraldehyde is mixed with a superabsorbant to partially transfer an aqueous solution from the dry glutaraldehyde to the superabsorbant.
Patent CA-2178062-A1 (CA)
Title: Improved process for the manufacture of 5-(alkoxymethyl)pyridine-2,3-dicarboxylate salt
Inventor: WU WEN-XEU
IPC: C07D401/04
Filed: 1996-06-03
Abstract: There is provided an improved method for the conversion of 5,6-dicarboxyl-3-pyridylmethyl ammonium halide to 5-(alkoxymethyl)pyridine-2,3-dicarboxylate salt via a single step closed reaction with the appropriate alcohol and a base at a temperature of about 120°-180°C. The product pyridinedicarboxylate salt is an important intermediate in the manufacture of pyridine imidazolinone herbicidal agents.
Patent CA-2179372-A1 (CA)
Inventor: BETHURUM GARY CAIN
IPC: H01R13/631
Filed: 1996-06-18
Abstract: A plug connector is provided that has a latching mechanism for locking to a receptacle connector at the rear of an IC card, wherein the latching mechanism occupies a minimum of space which otherwise could be occupied by additional contacts. The latch mechanism includes a pin-shaped latch (40, Fig. 3) which is rotatable about a latch axis (80) and which has a pair of radial projections (84, 86) at its forward end, so when the projections are inserted into the receptacle housing and turned 90°, the projections prevent withdrawal of the latch and therefore prevent withdrawal of the plug connector. An actuator (44) for operating the latch, includes a pair of handles (46, 48) at opposite side edges of the plug connector and a crossbar (104) that connects them and that has a pin (106) which extends into a helical groove (102) at the rear of the latch. The hole (116, Fig. 10) in the receptacleconnector housing of the IC card, is an undercut hole which forms a pair of forwardly-facing shoulders (112) for abutting shoulders (90) at the rear ends of the projections.
Patent CA-2179692-A1 (CA)
Inventor: ARNEY DONALD B
IPC: B64C25/56
Filed: 1996-06-21
Abstract: An improved step reinforcement system is disclosed for use in inflatable or pneumatic aircraft floats such as are employed in waterborne and amphibious aircraft.   The float itself comprises a continuous tubular shell having spaced apart upper and lower walls interconnected by spaced apart first and second side walls to define an interior space within the float. The lower wall further includes a step extending continuously and transversely between vertically spaced fore and aft portions thereof.  According to the improvement of the present invention, at least one inflatable bladder is disposed within the interior space of the float so as to be adjacent to the step and abut at least the lower wall of the float.  The bladder has an internal pressure sufficiently greater than the internal pressure of the float so as to reinforce the step.   An elongate stiffening element abuts the fore portion of the lower wall of the float forward from the  step.   Further disclosed is a method for selectively reducing or increasing the distance required for takeoff of the aircraft,  the method comprising the step of selectively increasing or decreasing the internal pressure of the at least one inflatable bladder.
Patent CA-2180332-A1 (CA)
Title: Sprayable compositions containing dispersed powders and methods for using the same
Inventor: LENTINI PETER J
IPC: A61K8/00
Filed: 1995-11-02
Abstract: Stable, sprayable compositions suitable for topical application to human skin or hair are provided, along with a method for their preparation.  The compositions comprise water-in-oil emulsions and a variety of substantially insoluble dispersed powder.  The compositions are useful for applying color to human skin or hair, for protecting human skin from ultraviolet radiation, and for treating human skin or hair with a dermatologically  active agent.  The compositions have unique suspending power, stability and dispersibility for water-in-oil emulsions.
Patent CA-2181277-A1 (CA)
Title: Evaporating apparatus
Inventor: SAILY KARI
IPC: B01D1/28
Filed: 1995-02-03
Abstract: Evaporating system for concentrating water comprises a mantle structure (1), inlets and outlets (3, 15, 16), a heat exchanger (4), a pressurizing unit (6b) and its operating unit (6a). The invention is characterized in that the pressurizing unit (6b) and its operating unit (6a), particularly an electric motor, are formed as an integrated compact structure (6) placed as a whole in the space limited by the mantle structure (1).
Patent CA-2186855-A1 (CA)
Title: Method and device for selectively collecting glass objects and temporarily storing the material thereof
Inventor: GIANASSO ROLAND
IPC: B07C5/36
Filed: 1995-03-30
Abstract: A method and a device for selectively collecting and temporarily storing glass objects (1), particularly hollow objects such as bottles (1), jars or the like, wherein at least one parameter is selected to enable one glass object (1) being processed to be distinguished from other objects, an object (1) delivered for collection and storage is checked (at 3 and/or 4) to determine whether it matches the distinguishing parameter, and if so, the object (1) is broken up (at 5) and the broken glass is stored (at 6) awaiting collection at a later time.
Patent CA-2190729-A1 (CA)
Title: Method for predicting the compressive strength of concrete and mortar containing fly ash
Inventor: LISKOWITZ JOHN W
IPC: G01N33/38
Filed: 1995-05-19
Abstract: The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15 % to 25 % fly ash as a replacement for cement, which are capable of meeting design specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.
Patent CA-2195879-A1 (CA)
Inventor: WALZER JOHN FLEXER JR
IPC: C08F110/14
Filed: 1995-07-28
Abstract: The invention is directed to a catalyst composition suitable for addition reactions of ethylenically and acetylenically unsaturated monomers comprising a metal oxide support having covalently bound to the surface thereof directly through the oxygen atom of the metal oxide an activator anion that is also ionically bound to a catalytically active transition metal cation compound.  The invention includes a preparation process for the invention catalyst composition exemplified by reacting a Lewis acid, such as trisperfluorophenyl boron with residual silanol groups of a silica support, preferably then reacting with a Lewis base such as diethylaniline, so as to prepare a silica bound anionic activator that when combined with a suitable transition metal compound will protonate it so as to form the ionic catalyst system. Use of the invention catalyst to polymerize alpha-olefins is exemplified.
Patent CA-2197734-A1 (CA)
Title: Voice processing system
Inventor: PORTER LAWRENCE LEON
IPC: H04M7/12
Filed: 1997-02-17
Abstract: A method of providing a voice mail service is disclosed using a voice processing system having a communications link to one or more voice mail systems. A voice message for a subscriber to said one or more voice mail systems is received at said voice processing system, which prompts a determination as to the voice mail system on which said subscriber has a voice mailbox. The voice message is the transmitted to the voice mail system on which said subscriber has a voice mailbox. In the preferred embodiment, the communications link forms part of the Internet, and received messages are processed independently by two separate voice processing systems to provide redundancy.
Patent CA-2198002-A1 (CA)
Title: Circuit for setting the operating point of an opto-electronic component
Inventor: REIME GERD
IPC: H04B10/06
Filed: 1995-08-25
Abstract: A circuit is used to set the operating point of at least one opto-electronic component, e.g. a photodiode (10'), in which the opto-electronic component is part of a receiver for useful alternating light signals. In order to set the operating point below the saturation voltage of the opto-electronic component, a resistance circuit is connected in parallel with the opto-electronic component at least to compensate for direct light signals. The resistance circuit has a self-adjusting resistor, the resistance va riation of which is at least voltage-dependent as soon as a given voltage below the saturation voltage is exceeded and thus loads the opto-e lectronic component until the set voltage is substantially attained. The compensation current required owing to the direct light is produce d without an outside voltage in such a way that virtually no current need be taken from the power supply.
Patent CA-2198486-A1 (CA)
Title: Cyanoacrylate adhesive compositions
Inventor: TIGHE PATRICK J
IPC: C09J4/04
Filed: 1995-08-31
Abstract: Alkyl cyanoacrylate compositions comprising at least one alkyl cyanoacrylate, a biocompatible plasticizer (preferably dioctyl phthalate), and SO2 as an anionic polymerization inhibitor are provided. These compositions are suitable for topical application to human skin.
Patent CA-2199053-A1 (CA)
Title: Composition including a polymeric system and use of the said system
Inventor: BARA ISABELLE
IPC: A61K8/00
Filed: 1997-03-03
Abstract: Use in a cosmetic composition to be applied to the skin or mucous or semi-mucous parts, of a polymeric system consisting of an aqueous dispersion of particles of a film-forming polymer which gives a film having a hardness of less than about 110.
Patent CA-2203754-A1 (CA)
Title: Fae1 genes and their uses
Inventor: LIM EDA
IPC: C12N15/11
Filed: 1995-10-23
Abstract: The present invention provides polynucleotide sequences from FAE1 genes. FAE1 genes encode elongation enzymes which catalyze the conversion of C18 FAs to C20-C22 FAs. The polynucleotides of the invention are used to modify FAE1 gene expression and thereby modulate FA content in plant organs or parts, particularly seeds.
Patent CA-2205838-A1 (CA)
Inventor: HOLDENGRABER CURT
IPC: C01D5/00
Filed: 1995-11-13
Abstract: A process for producing potassium sulfate or potassium sulfate and sodium sulfate from potash (10) and a sodium sulfate/water source (46 and/or 76), which includes: (a) subjecting a sodium sulfate source (46 and/or 76) to conversion with potash (10) in an aqueous medium to yield glaserite precipitate (20) and a first mother liquor (26); (6) converting the glaserite precipitate (20) with potash (10) and water (18) to produce a potassium sulfate precipitate (52) and a second mother liquor (40); (c) returning the second mother liquor (40) to step (a); (d) evaporating the first mother liquor (26) such that a sodium chloride and anhydrous sodium sulfate solids mixture is precipitated in a third mother liquor (28); (e) subjecting the solids from step (d) to a sodium sulfate/water source (12) to produce anhydrous sodium sulfate; and (f) returning the third mother liquor (28) for conversion to potassium salts.
Patent CA-2206296-A1 (CA)
Title: Low rigidity liposomal antibacterial composition
Inventor: BEAULAC CHRISTIAN
IPC: A61K9/127
Filed: 1995-12-22
Abstract: The invention relates to a liposomal formulation containing at least one therapeutic agent such as an antibiotic and to a method of treatment of bacterial infections through the administration of such a formulation. There is provided a low rigidity multilamellar liposomal formulation, free of cholesterol, comprising a neutral lipid, an anionic lipid and at least one therapeutic agent, wherein the liposomal formulation enhances the penetration of the therapeutic agent inside a bacterial cell. A preferred lipid combination is dipalmitoylphosphatidylcholine (DPPC): dimirystoylphosphatidylglycerol (DMPG) at a ratio of 10:1 to 15:1, with total lipid concentration ranging from 5 to 85 mM.