baber/WOPTO huggingface dataset:
Patent CA-2147524-A1 (CA)
Title: Corona-assisted electrostatic filtration apparatus and method
Inventor: NOHR RONALD SINCLAIR
IPC: B03C3/38
Filed: 1995-04-21
Abstract: A corona-assisted electrostatic filtration apparatus which includes a cathode, an anode filter element located in functional proximity to the cathode, and a means of establishing a nonalternating potential difference between the cathode and the anode which is sufficient to maintain a corona field of ionized gas between the cathode and the anode filter element.  The anode filter element includes a porous fibrous sheet material having pores in a range of from about 0.1 to about 100 micrometers, with at least a portion of the fibers thereof being uniformly coated with a metal.  Also provided is a method of utilizing such apparatus to remove particulate matter from a gaseous medium.
Patent CA-2147925-A1 (CA)
Title: Pseudopeptides derived from neurokinins; process for preparing the same and pharmaceutical compositions containing them
Inventor: FAUCHERE JEAN-LUC
IPC: A61K38/00
Filed: 1995-04-26
Abstract: Pseudopeptide derivs. and their enantiomers, diastereomers, epimers and addn. salts are new. R = naphthyl; 5,6,7,8-tetrahydronaphthyl or 1,2,3,4-tetrahydronaphthyl; and n = 1 - 8.
Patent CA-2150732-A1 (CA)
Title: Modulated bias unit for rotary drilling
Inventor: BARR JOHN DENZIL
IPC: E21B7/04
Filed: 1995-06-01
Abstract: A modulated bias unit, for controlling the direction of drilling of a rotary drill bit when drilling boreholes in subsurface formations, comprises a number of hydraulic actuators spaced apart around the periphery of the unit, each having a movable thrust member which is hydraulically displaceable outwardly for engagement with the formation of the borehole being drilled.  A selector control valve modulates the fluid pressure supplied to each actuator in synchronism with rotation of the drill bit so that, as the drill bit rotates, each movable thrust member is displaced outwardly at the same selected rotational position so as to bias the drill bit laterally and thus control the direction of drilling.  The control valve is a disc valve comprising two relatively rotating elements having contiguous surfaces formed of polycrystalline diamond.  The elements are maintained in coaxial relation by a polycrystalline diamond bearing pin which extends axially from one element and engages in a central axial bearing aperture in the other element.
Patent CA-2150969-A1 (CA)
Inventor: DING MAYNARD GUO-TSUEN
IPC: F23G5/08
Filed: 1995-06-05
Abstract: A Process for combusting sulfur vapor released from a sulfur bearing material, comprising:     (a)  introducing a sulfur bearing material into a furnace having a combustion zone;     (b)  ejecting at least one fuel stream with or without a substoichiometric amount of at least one primary oxidant stream and combusting said at least one fuel stream with the substoichiometric amount of the primary oxidant stream or ambient gas in the combustion zone to produce heat sufficient to release some sulfur vapor from the sulfur bearing material and to form combustion products containing unburned fuel;     (c)  ejecting at least one secondary oxidant stream angled away or spaced from the fuel stream and primary oxidant stream;     (d)  causing a recirculating flow within the combustion zone to dilute at least a portion of the combustion products, secondary oxidant, sulfur vapor, unburned fuel and ambient gas in the furnace; and (e)  combusting the sulfur vapor and the unburned fuel with said secondary oxidant.  Alternatively, the fuel stream may be introduced with a superstoichiometric amount of the primary oxidant stream, with or without the secondary oxidant, such that excess oxygen is reacted with sulfur vapor released from the sulfur bearing material to produce more heat.
Patent CA-2152500-A1 (CA)
Title: Still film sound photography method and apparatus
Inventor: TSAI IRVING
IPC: G03B31/06
Filed: 1993-12-23
Abstract: A system for incorporating electronic signals representative of at least audio information into still film slides and photographs (900). A data storage medium (5) capable of retaining electronic signals is provided in association with a photographic print (900) or frame in which a slide is mounted. Audio information is stored in the data storage medium (5) and may be aurally reproduced by an audio reproduction device (2040) as the slide or photograph (900) is being displayed. The system affords bi-directional with the existing art.
Patent CA-2154170-A1 (CA)
Title: Cyclic imide thione activated polyalkylene oxides
Inventor: GREENWALD RICHARD B
IPC: C07D207/36
Filed: 1994-01-18
Abstract: Water-soluble cyclic imide thione activated polyalkylene oxides having improved hydrolytic stability are disclosed. Methods of forming and conjugating the activated polyalkylene oxides with biologically active nucleophiles are also disclosed.
Patent CA-2154748-A1 (CA)
Title: Method and device for testing blood units for viral contamination
Inventor: MARTINSON JEFFREY
IPC: C12Q1/6806
Filed: 1994-02-17
Abstract: A method and apparatus for creating a leukocyte rich sample from a mixed population of blood cells. The method comprises the steps of: separating an amount of blood into layers that include a buffy coat layer having a mixed population of blood cells including plasma and red blood cells; providing a chamber having an opening for receiving a fluid; causing the buffy coat layer to enter the chamber; centrifuging the chamber to separate the buffy coat layer into at least a plasma containing layer, a leukocyte containing layer, and a red blood cell containing layer; and separating the leukocyte containing layer from the other layers in the chamber.
Patent CA-2154892-A1 (CA)
Inventor: ZURBRUEGG H R
IPC: A61F2/06
Filed: 1994-11-28
Abstract: L'invention concerne une prothèse vasculaire servant à remplacer des vaisseaux sanguins chez l'homme ou chez l'animal, qui comprend une section de vaisseau sanguin de substitution (3) prélevée chez l'homme ou chez l'animal autour de laquelle est tiré un filet tubulaire (2) qui l'entoure. Les fils (1) croisés qui forment ce filet tubulaire (2) progressent en lignes hélicoïdales autour de son axe longitudinal. La prothèse vasculaire se caractérise en ce que le filet tubulaire (2) peut être étiré ou comprimé par endroits, dans le sens longitudinal sur le vaisseau sanguin de substitution, pour s'adapter aux variations de diamètre dudit vaisseau sanguin de substitution, ce qui lui permet d'en épouser pleinement la configuration.
Patent CA-2159078-A1 (CA)
Title: Applications and methods for the preparation of fatty acid esters of polysaccharides
Inventor: PELTONEN SOILI
IPC: C05G3/00
Filed: 1994-03-30
Abstract: The invention is related to highly substituted, water-insoluble, poorly water-permeable fatty acid esters of polysaccharides and compositions comprising said polysaccharides esters suitable for use in hot-melt adhesives and as coatings for the controlled release of active ingredients, especially fertilizers. A convenient method for preparing said polysaccharides esters using e.g. dimethylformamide as a solvent is also disclosed.
Patent CA-2161980-A1 (CA)
Title: Substituted methylenedioxy¬3',4':6,7|indolizino-¬1,2-b|quinolinones
Inventor: KINGSBURY WILLIAM DENNIS
IPC: A61K31/47
Filed: 1994-05-03
Abstract: Antiviral substituted methylenedioxyindolizino[1,2-b]quinolinones, compositions comprising such compounds, and a method of treating viral infection by using such compounds are disclosed herein.
Patent CA-2162817-A1 (CA)
Title: Creative assessment system and program
Inventor: ROBERTS MARILYN K
IPC: G09B7/06
Filed: 1995-11-14
Abstract: A system for assessing a student's knowledge of a subject is disclosed which includes an assessment sheet or booklet which has a story portion setting forth a plurality of related facts or observations therein and an activity portion setting forth a plurality of questions and directions therein to the student requiring a written response by the student, an answer area for the student to place written responses therein and a machine readable teacher scoring area on the sheet.   The scoring area has machine readable spaces therein for recording numbers or marks characteristic of  predetermined categories of the teacher's evaluation of the student's responses to the questions and directions in accordance with a predetermined set of assessment criteria.  In other embodiments, the answer sheet may be separable from a reusable assessment booklet.
Patent CA-2163301-A1 (CA)
Title: Collapsible Utility Cart Apparatus
Inventor: AGOPIAN SERGE
IPC: B62B5/00
Filed: 1995-11-20
Abstract: A collapsible utility cart apparatus (10) including a basket device (11) having a generally vertical first side wall second side wall (13, 13'), and spaced-apart support wheels (14, 15 and 14', 15') rotatably mounted to a bottom wall (12) of the basket device (10).  A first and a second frame member (16, 16') are mounted to a respective side wall  (13,  13')  of the basket device (11) for pivotal movement of the frame members (16, 16') in a respective plane substantially parallel to and adjacent the side walls (13, 13') between a deployed position and a stored position.   In the deployed position, the basket device (11) is vertically supported by the frame members (16, 16') to position the bottom wall (12) and the support wheels (14, 15 and 14', 15') off the ground a predetermined height.  In the stored position, the respective frame members (16, 16') are positioned substantially adjacent the side walls (13, 13'), respectively, for storage.
Patent CA-2172612-A1 (CA)
Title: A trap for trapping and possibly killing of animals, especially small ones
Inventor: LUNDGREN LARS-OLOF
IPC: A01M23/34
Filed: 1994-09-30
Abstract: A trap is described, for catching and possibly killing of animals, especially small animals, like minks etc.  The trap comprises a relatively elongated cage, preferably formed with a bottom, side walls and a roof made from bars, and has a first gable wall with a preferably circular first opening intended to form an entrance for the animal, and a door provided, guided by guide elements, to be able to take a first position with the trap activated, in which said opening is open, and to take a second position, in which the trap is deactivated with said opening closed.  The trap is also provided with an activating means provided to act upon the door to go from the first to the second position, with a first touching element in the cage, and a second gable wall. According to the invention, the trap is primarily characterized in that it is provided with indicating means, optionally readable in a relatively large distance, for indicating of the activated or deactivated position of the trap.
Patent CA-2173464-A1 (CA)
Title: Method and device for the determination of substances in solution
Inventor: HAMBITZER GUENTHER
IPC: G01N27/49
Filed: 1995-08-11
Abstract: A method for the determination of dissolved substances, in particular oxygen, is described, which is distinguished by an open, diaphragm-free system in a potentiostatic three-electrode arrangement with mechanical self-cleaning.  A novel possibility for generating the required reference potential by means of a current-loaded metal electrode offers the option of the employment of the most diverse electrode materials and permits the removal of cross sensibilities in the determination of the dissolved substances.       The corresponding apparatus provides the integration of the potentiostat, the electronic controls and the signal processing in one and the same measuring probe.  It permits the determination of different analysis media.       The method described has its application in technical processing installations, in particular in sewage and potable water processing systems, in food technology, in pharmaceutical technology and in biotechnology, as well as in chemical-technical processes.
Patent CA-2174550-A1 (CA)
Title: Suspension of loteprednol etabonate
Inventor: GUY YAACOV
IPC: A61K31/715
Filed: 1994-10-21
Abstract: The invention provides novel compositions of matter for delivering water-insoluble steroid drugs suitable for therapeutic use. The invention also provides stable aqueous suspensions of water-insoluble steroid drugs of particle sizes of 15µm which remain in such a state so as to allow for immediate suspension, when desired, even after extended periods of settling.
Patent CA-2174743-A1 (CA)
Inventor: BARGER LEE ALLEN
IPC: B05B9/04
Filed: 1994-11-01
Abstract: The present invention relates to an aerosol dispensing apparatus (1), more particularly to aerosol dispensing valves incorporating a controlled metered dispensing function wherein the metering chamber (7) holding the next aerosolized dose is in fluidic with the reservoir (3) allowing homogenous mixing of the next aerosolized dose to be dispensed.
Patent CA-2177519-A1 (CA)
Title: Absorbable implant materials having controlled porosity
Inventor: MCGREGOR JAMES
IPC: A61L27/56
Filed: 1996-05-28
Abstract: Absorbable implant materials having controlled porosity are formed by a method comprising the steps of: providing a dispersion of a bioabsorbable polymer, such as collagen, in a first solvent, such as water; adding particles of a second material, e.g. frozen water droplets or ice particles to the dispersion; followed by freezing the dispersion to form a frozen dispersion having the particles embedded therein, and removing both the first solvent and the second material from the frozen dispersion by freeze-drying or solvent extraction to leave the porous implant material. The invention also encompasses the use of such implant materials for wound healing applications.
Patent CA-2184761-A1 (CA)
Title: Methods of fabricating cross-linked biobased materials and structures fabricated therewith
Inventor: AFZALI-ARDAKANI ALI
IPC: C08H7/00
Filed: 1996-09-04
Abstract: Biobased cross-linked compositions, methods of fabrication and structures, in particular biobased printed wiring boards using the compositions and methods of making the structures are described. Biobased materials such as lignin, crop oils, wood resins, tannins, and polysaccharides and combinations thereof are cross-linked, preferably using heat, a cross-linking agent, and an initiator. The materials fabricated have suitable properties for printed wiring boards which are made by impregnating a fiberglass or biobased cloth with an admixture of the biobased material, cross-linking agent and initiator which is processed by conventional methods to produce a printed wiring board.
Patent CA-2185924-A1 (CA)
Inventor: CLAEYS HENRY M
IPC: B64D13/06
Filed: 1995-04-07
Abstract: Un système de climatisation possède une machine de conditionnement d'air comprenant un compresseur (38), une turbine de refroidissement (34), un moteur/générateur (36) et une turbine de travail (40), tous montés sur un seul arbre (32). La turbine de travail reçoit l'air d'appoint provenant du moteur (12) de l'avion et possède un ajutage d'admission (42) à géométrie variable qui régule le débit d'air sans étranglement notable. A l'aval de l'ajutage, la turbine de travail extrait une énergie de détente de l'air d'appoint tout en le refroidissant. Celui-ci est utilisé pour entraîner les autres composants de la machine de conditionnement d'air et notamment du moteur/générateur qui génère de l'électricité.
Patent CA-2186625-A1 (CA)
Title: Improved preparation of water-dispersed formulation by nucleation and crystallization of low-metling point pesticide active ingredient
Inventor: ESSINGER JAMES FRANKLIN JR
IPC: A01N25/14
Filed: 1995-03-29
Abstract: Nucleating agents induce effective nucleation of supercooled low-melting pesticides. Subsequent rapid crystallization allows practical preparation of WP, WG, SC etc. formulation types from molten low-melting pesticides.
Patent CA-2188104-A1 (CA)
Title: Copy protection by inserting a phase-shifted color burst signal into the burst interval of an analog color video signal
Inventor: SATO HIDEO
IPC: G11B20/02
Filed: 1996-10-17
Abstract: An analog color video signal is prevented from being satisfactorily copied by inserting a phase-shifted color burst signal of predetermined duration into a predetermined location of the usual burst interval of that analog color video signal. The predetermined location may precede the normal color burst signal, or it may follow the normal color burst signal or it may be located in the middle of the burst interval.
Patent CA-2188498-A1 (CA)
Inventor: SMITH DAVID KINNEY
IPC: H04B10/12
Filed: 1996-10-22
Abstract: A single mode optical waveguide fiber having a positive total dispersion is disclosed. The novel waveguide fiber has a core region comprising three distinct segments. Studies of this novel waveguide wherein properties are calculated as various ones of the core region parameters are changed, show that the waveguide satisfies the requirements of a fiber in a high bit rate, long regenerator spacing system. The novel waveguide design is relatively simple to manufacture and maintains its functional properties at tight tolerances when the core region parameters are varied over a prescribed range. This high performance waveguide limits self phase modulation and four wave mixing, facilitates wavelength division multiplexing, and is compatible with optical amplifiers.
Patent CA-2191076-A1 (CA)
Inventor: SMITH MICHAEL BURL
IPC: E21B43/30
Filed: 1995-05-10
Abstract: Un procédé permet d'améliorer la capacité de production d'un puits de forage primaire (2) qui contient un train de tiges (5) tel qu'un cuvelage. Il consiste à retirer au moins une partie (20) de ce cuvelage pour y ménager une ouverture (21), à placer des tubes (22) dotés d'une surface de guidage (25) à proximité de cette ouverture (21), et à forer un puits latéral (34) incliné par rapport aux puits de forage primaire (2), en utilisant un ensemble de forage porté par une tige de production enroulée (30).
Patent CA-2191096-A1 (CA)
Inventor: SHENKIN MARK LEE
IPC: G01N15/14
Filed: 1995-05-23
Abstract: A process for determining the reticu-locyte population in blood samples, which process includes the use of coriphosphine O to stain reticulocytes and which process is partic-ularly suitable for detection by flow cytometry techniques. The optics (10) of a flow cytome-ter useful in the process includes an argon ion laser (12) as a light source which illuminates a blood sample flowing through a flow cell (14). Scattered light and fluorescence fall upon a dichroic mirror (22) which serves to reflect the right-angle scattered light (24) and trans-mit the fluorescence (26). A dichroic mirror (30) serves to reflect green fluorescence (32) and transmit red fluorescence (38).
Patent CA-2191844-A1 (CA)
Title: Acylated enol derivatives as prodrugs of elastase inhibitors
Inventor: PEET NORTON P
IPC: C07K5/08
Filed: 1995-05-08
Abstract: This invention relates to acylated enol derivatives of known elastase inhibitors. These compounds are useful in the treatment of various inflammatory diseases, including cystic fibrosis and emphysema or as prodrugs of compounds which are useful in the treatment of said diseases.
Patent CA-2195530-A1 (CA)
Inventor: HEASLIP LAWRENCE JOHN
IPC: G01N29/02
Filed: 1995-07-19
Abstract: Un appareil de détection des conditions d'écoulement d'un métal liquide dans une poche de coulée et hors de celle-ci comprend un capteur permettant de détecter la vibration causée par un écoulement de métal liquide dans une poche de coulée et depuis celle-ci, et d'émettre un signal correspondant au niveau de la vibration détectée par le capteur. Un processeur de signaux reçoit le signal du capteur, le compare à un signal de référence, puis émet un signal de comparaison. Une unité logique reçoit le signal de comparaison et émet un signal d'état représentatif des conditions d'écoulement du métal liquide dans la poche de coulée et depuis celle-ci.
Patent CA-2199000-A1 (CA)
Title: Information recording medium and process for production thereof
Inventor: YOSHIDA KOUICHI
IPC: G06K19/06
Filed: 1997-03-03
Abstract: An information recording medium comprising a stack of layers includes a recording layer interposed between two shielding layers, the shielding layers being opaque to radiation within a predetermined waveband. The recording layer is adjacent to a layer which is transparent to radiation within the predetermined waveband, and is readable by radiation within the predetermined waveband passing into the layer through a free edge of the layer.
Patent CA-2199972-A1 (CA)
Title: Bec verseur
Inventor: HUIZING HENDRIK GEZINUS
IPC: B65D49/06
Filed: 1995-09-14
Abstract: L'invention se rapporte à un bec verseur (1) adapté à l'orifice d'un récipient. Le bec verseur comprend un logement (5, 6) présentant au moins une ouverture (10) et comportant un élément cylindrique creux (7) mobile en sens axial par rapport au logement entre une position fermée dans laquelle l'élément cylindrique assure la fermeture de l'ouverture située dans ledit logement, et une position versante dans laquelle l'ouverture est laissée libre.
Patent CA-2201075-A1 (CA)
Title: Pull-top can
Inventor: KAGAWA SEIJI
IPC: B65D17/28
Filed: 1997-03-26
Abstract: A pull-top can protect the contents from the material of the body and lid without impairing the opening properties of the pull-top mechanism attached to the lid, and maintain the quality of the contents such as beverages, beer, and any other seafood for a long period of time. A pull-top can includes a body having an open top and an inner surface laminated with an organic resin film, and an aluminum lid caulked at the cut-open portion of the body and having a pull-top mechanism. The inner surface of the lid on the body side is laminated with a porous organic resin film having a large number of small through pores by an adhesive layer sandwiched between the inner surface of the lid and the porous organic resin film.
Patent CA-2201238-A1 (CA)
Inventor: KAWAI YOSHIO
IPC: G01C19/5607
Filed: 1997-03-27
Abstract: A vibration gyro which is equipped with an oscillator in which slits are made in a flat-plate piezoelectric board to form a tuning fork section. For construction of the oscillator, driving electrodes for vibrating the tuning fork section are formed in the vicinity of end portions of the slit, while detection electrodes for detecting an rotational angular velocity in a longitudinal direction of the tuning fork section are formed on the arm portions of the tuning fork section.
Patent CA-2202056-A1 (CA)
Title: Benzopyran and benzo-fused compounds, their preparation and their use as leukotriene b4' (ltb4) antagonists
Inventor: KOCH KEVIN
IPC: A61P43/00
Filed: 1995-05-26
Abstract: This invention relates to novel benzopyran and other benzo-fused leukotriene B4 (LTB4) antagonists of formula (I), and the pharmaceutically acceptable salts thereof wherein A1 is O, CH2, S, NH or N(C1-C6)alkyl; A2 is (a), (b) or (c); R1 is selected from the group consisting of tetrazolyl, carboxyl, cis or trans -(CH2)m-CX1 = CX2-CO2H, -(CH2)mCX3X4X5, -CO-NG1G2, (d), and a substituted five or six-membered aromatic ring optionally having one or two heteroatoms where the heteroatoms are independently selected from the group consisting of O, S and N; R2 is hydrogen, fluoro, chloro, (C1-C6)alkyl, (C1C6)alkoxy, (C1-C4)perfluoroalkyl, (C1-C4)perfluoroalkoxy, (C1-C6)alkylthio, (C1-C6)alkylsulfinyl, phenylsulfinyl, (C1-C6)alkylsulfonyl or phenylsulfonyl; and to the corresponding intermediates of formula (1A), and to pharmaceutical compositions containing such compounds, and to a method of using such compounds as LTB4 antagonists. The compounds of this invention inhibit the action of LTB4 and are therefore useful in the treatment of LTB4 induced illnesses such as inflammatory disorders including rheumatoid arthritis, osteoarthritis, inflammatory bowel disease, psoriasis and other skin disorders such as eczema, erythema, pruritus and acne, stroke and other forms of reperfusion injury, graft rejection, autoimmune diseases, asthma, and other conditions where marked neutrophil infiltration occurs.