baber/WOPTO huggingface dataset:
Patent CA-2428546-A1 (CA)
Inventor: BOEHM FRANK H JR
IPC: A61F2/46
Filed: 2001-11-13
Abstract: A method for performing percutaneous interbody fusion is disclosed. The method includes the steps of inserting a guide needle posteriorly to the disc space, inserting a dilator having an inner diameter slightly larger than the outer diameter of the guide needle over the guide needle to the disc space to enlarge the disc space, and successively passing a series of dilators, each having an inner diameter slightly larger than the outer diameter of the previous dilator, over the previous dilator to the disc space the gradually and incrementally increase the height of the disc space. Once the desired disc height is achieved, the guide needle and all the dilators, with the exception of the outermost dilator, are removed. An expandible intervertebral disc spacer is then passed through the remaining dilator and positioned in the disc space. The disc spacer is expanded to the required disc height, and then a bone matrix is passed through the dilator to fill the disc space. The dilator is then removed. An expandible intervertebral disc spacer is also disclosed, having a tapered bore that causes greater expansion of one end of the spacer with respect to the other. A kit for performing the percutaneous interbody fusion procedure is also disclosed.
Patent CA-2428575-A1 (CA)
Title: Method for producing esters of multibasic acids
Inventor: DISTELDORF WALTER
IPC: C07C69/80
Filed: 2001-11-13
Abstract: The invention relates to a method for producing esters of an acid component chosen from the multibasic C4-C10-carboxylic acids and an alcohol component chosen from C3-C12-alkanols or -alkanediols whose alkyl chain can be interrupted by 1 to 3 oxygen atoms. Sad method comprises the following steps: a) a mixture consisting essentially of the acid component or an anhydride thereof and the alcohol component is heated to boiling in a reaction zone in the presence of an esterification catalyst; b) the vapours containing alcohol and water are separated into a fragment that is rich in alcohol and a fragment that is rich in water by rectification; and c) the alcohol-rich fraction is fed back into the reaction zone, while the water-rich fraction is extracted from the process. The inventive method is simple to carry out and allows the rapid adjustment of an essentially quantitative conversion.
Patent CA-2431024-A1 (CA)
Title: Aerosol dispensing valve
Inventor: HOUSER DAVID J
IPC: B05B9/04
Filed: 2002-11-08
Abstract: A valve assembly (20) can automatically dispense aerosol content from an aerosol container (22) at predetermined intervals without the use of electric power. A diaphragm (58) at least partially defines an accumulation chamber (80) that receives aerosol content from the can (22) during an accumulation phase. Once the internal pressure of the accumulation chamber (80) reaches a predetermined threshold, the diaphragm (58) moves axially, carrying with it a leg (62) so as to unseal an outlet, and thereby initiate a spray burst. A pawl (66) extends from the diaphragm (58), and engages a retention surface (68) to resist movement of the diaphragm (58) and prolong the accumulation phase. The diaphragm (58) assumes its original position when the pressure within the accumulation chamber (80) falls below a threshold pressure.
Patent CA-2431246-A1 (CA)
Inventor: GORYSHIN IGOR YU
IPC: C12N15/90
Filed: 2001-12-05
Abstract: L'invention concerne des procédés permettant de manipuler des acides nucléiques en vue de produire des fusions géniques, d'effacer ou de cloner une partie d'un chromosome ou d'insérer une séquence dans un chromosome. Les procédés mettent en oeuvre des procédés de transposition séquentielle au moyen de deux ou plusieurs séquences inversées de répétition interagissant avec une transposase sur un polynucléotide transposable, chaque paire de séquences interagissant avec une transposase interagissant avec une enzyme transposase distincte.
Patent CA-2431365-A1 (CA)
Title: Process for the simultaneous coproduction and purification of ethyl acetate and isopropyl acetate
Inventor: MURPHY CARL DAVID
IPC: C07B61/00
Filed: 2001-10-15
Abstract: This invention relates to a process for the simultaneous coproduction of ethyl acetate and isopropyl acetate. The esterification reaction comprises contacting acetic acid with a mixed alcohol stream of ethanol and isopropanol.  Exemplified is a purified, Fischer Tropsch derived mixture of ethanol and isopropanol. The esterification reaction occurs in the presence of an acidic catalyst in a liquid phase reaction system. The resultant crude reaction step product is separated and purified by distillation to produce acetate ester products having greater than 99.5 wt% purity.
Patent CA-2431590-A1 (CA)
Inventor: FISCHER JOHN S
IPC: B65G39/12
Filed: 2001-11-29
Abstract: A bed rail assembly apparatus (124) that is inserted between idlers (127) in an existing conveyor system (100). The bed rail assembly apparatus includes a support rail (123) oriented substantially parallel to and beneath the conveyor belt (104). A first bed rail assembly (124) on a first side of the support rail and is oriented at an angle to the horizontal surface of the conveyor belt to support a first side of conveyor belt to be inclined upwards. Small diameter, closely spaced rollers (110), are affixed to the inclined surface of each bed rail assembly (124) to support the inclined side of the conveyor belt and reduce friction between the rollers (110) and the conveyor belt (104). A  second inclined bed rail assembly (124) on a second side of the support rail (123) is inclined upwards to support a second inclined side of the conveyor belt (104). Small diameter rollers are affixed to the inclined surface of the second bed rail assembly to incline upward a second side of the conveyor belt and to reduce friction between the second inclined bed rail assembly (124) and the conveyor belt (104).
Patent CA-2433356-A1 (CA)
Inventor: BLANTON JOHN
IPC: G01N33/48
Filed: 2001-12-28
Abstract: L'invention concerne un matériau biologique viable conservé par cryogénie (cryoconservation) par immersion dudit matériau dans un réservoir contenant un fluide de refroidissement, puis par acheminement du fluide de refroidissement devant le matériau à une vitesse et à une température prédéterminées sensiblement constantes, de manière à congeler ledit matériau. Le matériau peut, soit être directement plongé dans le fluide de refroidissement sans préparation, soit préparé de manière chimique avant congélation. Un mode de réalisation décrit dans l'invention consiste à congeler le matériau biologique suffisamment rapidement pour éviter la formation de cristaux de glace à l'intérieur des structures cellulaires (vitrification) et permettre aux échantillons de conserver une structure anatomique et une activité biochimique après décongélation. La température du fluide de refroidissement est, de préférence, comprise entre 20 et 30 ·C, ce qui est une température suffisamment chaude pour réduire la formation de fractures de tension et d'autres artefacts provoqués par les changements de température dans des membranes cellulaires. Les cellules congelées selon le mode de réalisation décrit dans cette invention présentent une quantité d'avaries cellulaires et intercellulaires moins importante que les cellules congelées selon d'autres procédés de cryoconservation utilisés pour des techniques d'examens pathologiques et histologiques. Le matériau biologique étant congelé de telle manière qu'il est vitrifié, l'activité biochimique à l'intérieur des cellules n'est pas perdue après congélation; ainsi, divers modes de réalisation décrits dans cette invention peuvent être appliqués dans un système de préparation de matériaux biologiques pour des techniques de cryopathologie et d'immunohistochimie plus récentes dans des domaines tels que la recherche et les soins aux malades.
Patent CA-2435974-A1 (CA)
Inventor: ORE THOMAS G
IPC: F16H63/34
Filed: 2003-07-25
Abstract: A vehicle transmission has first and second shafts rotatable in a housing, a spring applied, pressure released bake mechanism for preventing vehicle movement, and a torque disconnect mechanism for controlling transmission of torque from the first shaft to the second shaft. An interlock mechanism includes an opening formed in the housing through which an operator may access the torque disconnect mechanism, a fluid pressure supply passage for communicating pressurized fluid to the brake mechanism, a dump port formed in the housing in a wall of the opening, a pressure dump passage communicating the supply passage with the dump port, and a plug member mountable in the opening. The plug member closes the dump port and closes communication between the dump passage and the environment when the plug member is mounted in the opening The dump port and the dump passage are communicated with the environment, and the brake is spring applied when the plug member is removed from the opening.
Patent CA-2436582-A1 (CA)
Title: Amplificateur a correction aval
Inventor: BLODGETT JAMES R
IPC: H03F1/32
Filed: 2001-11-09
Abstract: La présente invention concerne un nouvel amplificateur à correction aval (FFA) et son générateur-récepteur de signal d'identification. Dans un mode de réalisation de l'invention, l'amplificateur à correction aval nécessite seulement un unique oscillateur pour actionner à la fois le générateur de signal d'identification et le récepteur de signal d'identification, utilisé conjointement au circuit d'amplificateur du FFA. Dans un autre mode de réalisation de l'invention, un procédé permet de générer et de détecter un signal d'identification à partir d'un signal oscillatoire unique.
Patent CA-2437737-A1 (CA)
Title: Methods and compositions of amplifying rna
Inventor: GINSBERG STEPHEN D
IPC: C12Q1/68
Filed: 2002-02-14
Abstract: The present invention pertains to a method that will increase the efficiency of second strand cDNA synthesis through a mechanism of "terminal continuatio n" before further RNA amplification by RNA transcription using, for example, a bacteriophage promoter. In a specific embodiment, a transcription promoter i s attached to the 5' region of cDNA through the same mechanism of "terminal continuation". Genetic signals are subsequently amplified in a linear manner through RNA transcription. In specific embodiments, the orientation of the transcribed RNA is either sense or antisense, depending on the desired downstream application. In other embodiments, the present invention pertains to methods for extraction and amplification of RNA, particularly mRNA, from histologically stained tissues and cells.
Patent CA-2438534-A1 (CA)
Title: Anhydrous antiperspirant and deodorant compositions containing a solid, water-soluble, skin active agent
Inventor: SCAVONE TIMOTHY ALAN
IPC: A61K8/92
Filed: 2002-02-28
Abstract: Disclosed are anhydrous antiperspirant and deodorant compositions that comprise from about 0.1 % to about 30 % by weight of an antiperspirant or deodorant active; from about 0.1 % to about 20 % by weight of a water-soluble, skin active solid (e.g., solid, water-soluble vitamins or other nutrients) other than the antiperspirant or deodorant active; from about 0.1 % to about 40 % by weight of a suspending agent; and from about 10 % to about 99 % by weight of an anhydrous carrier liquid, wherein the composition is substantially free of nonvolatile organic liquids having a C log P value greater than about 7Ø The anhydrous compositions allow the water-soluble skin active solids to release into the sweat or other moisture on the skin more rapidly or to a greater extent, thus enhancing any skin active effect resulting from such active materials contacting the skin, especially the underarm area of skin.
Patent CA-2438556-A1 (CA)
Title: Tension-free elastic tape
Inventor: MUELLER ERHARD
IPC: D04B21/14
Filed: 2002-02-08
Abstract: The invention relates to a tension-free elastic tape that is used for the surgical treatment of female urinary incontinence. The inventive tape has a textile structure that allows ingrowth of the tape into the connective tissue.  On its longitudinal edges, the tape has edge threads (2, 4, 6, 8) that project from the textile structure of the tape and that especially facilitate a good primary anchoring of the tape in the tissue. The edge threads are firmly incorporated in the structure of the tape.
Patent CA-2439826-A1 (CA)
Inventor: PETERSEN SCOTT R
IPC: A61B17/00
Filed: 2002-02-08
Abstract: La présente invention concerne des méthodes et des dispositifs permettant de poser et/ou de récupérer un filtre fixé à un fil-guide disposé dans un vaisseau sanguin. Un système selon la présente invention comprend, une tige extérieure possédant une extrémité proximale, une extrémité distale et une paroi définissant une lumière de tige extérieure. Ledit système comprend également un mécanisme d'arrêt disposé dans la lumière de tige extérieure. Ledit mécanisme d'arrêt est de préférence conçu de sorte qu'un mouvement axial relatif puisse être sélectivement empêché entre le fil-guide et la tige extérieure.
Patent CA-2440348-A1 (CA)
Inventor: LEMIEUX BERTHIER
IPC: H04W24/06
Filed: 2002-03-15
Abstract: A method for determining the performance of decoding in a telecommunication system comprising a decoder and a testing apparatus for supplying test data to the decoder. Test data comprising signalling data in a signalling frame format is generated, and the test data mapped into two consecutive frames and transmitted from the testing appa-ratus to the decoder for decoding. The signalling data is decoded from the received two test data frames and transmitted back to the testing apparatus encoded in one frame. The performance of decoding is determined by comparing the transmitted signalling data and the received signalling data in the test apparatus.
Patent CA-2442237-A1 (CA)
Title: Volumetric electro optical recording
Inventor: MALKIN JACOB
IPC: G11C13/04
Filed: 2001-03-20
Abstract: In an optical memory device, an electroluminescent matrix has a plurality of individually electrically addressable electroluminescent cells, each having a stack of memory cells. The electroluminescent cells are addressable by applying a biased voltage through a grid of light-transparent electrodes.
Patent CA-2443768-A1 (CA)
Title: Rotary encoder
Inventor: SOUTHAM GORDON R
IPC: G01D5/38
Filed: 2000-03-28
Abstract: An apparatus and method for measuring in real time the rotational or linear position, direction or velocity of a rotating or linear moving body, particularly an encoded optical disk or strip attached to such rotating or linear moving body. A position measurement pattern comprising a plurality of spaced apart rows of "lands" and "pits" are included on the encoded disk or strip. A position read head with a plurality of laser beams is positioned to reflect laser light off the position measurement pattern on the disk or strip.  The relative spacing of the laser beams on the position read head is adjusted to a non-integral multiple of the spacing of the rows. Output signals from the position read head are generated according to reflected laser light from the position measurement pattern which is detected by the error read head. The output signals are converted to position, direction and velocity information.
Patent CA-2448378-A1 (CA)
Inventor: BUSCH DETLEF
IPC: C08K3/00
Filed: 2002-05-31
Abstract: The invention relates to a film with controllable tear resistant properties, comprising at least one basic layer which contains at least one polymer I from at least one hydroxycarboxylic acid, and >0.1 wt. %, in relation to the weight of the layer, of a thermoplastic polymer II which is different from polymer I, and/or inorganic additives.
Patent CA-2448895-A1 (CA)
Title: Systems and methods for detecting casing collars
Inventor: BRIDGES JAMES R
IPC: E21B47/09
Filed: 2002-05-31
Abstract: A tubing conveyed casing collar locator system that detects the casing colla rs (30) in a wellbore and acoustically transmits the information through the tubing (25) to the surface where it is detected and processed in a surface processor (65). The system comprises a downhole tool (35) which comprises downhole sensors, a signal processor with memory, a drive circuit, a battery pack, and a signal generator. The surface system comprises a surface processor, depth system, and acoustic signal transmitter/receiver. The downhole tool (35) detects casing collars (30) as the tool is moved through the collar and acoustically transmits the data or stores the data in downhol e memory according to programmed instructions. In one embodiment, the tool compares sensor signals from production elements, such as valves, to stored sensor signatures to uniquely identify the downhole element. In one embodiment, the downhole tool changes operating modes in response to surface command.
Patent CA-2450691-A1 (CA)
Title: Genes and proteins involved in the biosynthesis of lipopeptides
Inventor: FARNET CHRIS M
IPC: C12N9/00
Filed: 2002-12-24
Abstract: Genes and proteins involved in the biosynthesis of lipopeptides by microorganisms, in particular the nucleic acids forming the biosynthetic locus for the A54145 lipopeptide from Streptomyces fradiae and the A54145-like lipopeptide from Streptomyces refuineus. These nucleic acids can be used to make expression constructs and transformed host cells for the production of lipopeptides. The genes and proteins allow direct manipulation of lipopeptides and related chemical structures via chemical engineering of the proteins involved in the biosynthesis of A54145.
Patent CA-2450872-A1 (CA)
Inventor: HARNER LESLIE L
IPC: C22C38/00
Filed: 2002-06-12
Abstract: La présente invention concerne un alliage d'acier ferritique, magnétique doux, résistant à la corrosion, un article d'utilité réalisé à partir de cet alliage, et un procédé permettant l'utilisation dudit alliage. L'alliage a la composition suivante, en pourcentages pondéraux: C 0,005-0,040; Mn 1,0 max.; Si 1,0 max.; P 0,050 max.; S 0,020 max.; Cr 27,0-30,0; Ni 0,35 max.; Mo 0,35 max.; Cu 0,35 max.; Co 0,25 max.; N 0,010-0,05. Le reste est composé essentiellement de fer et des impuretés que l'on trouve normalement dans des catégories similaires d'aciers inoxydables ferritiques. Un autre aspect de l'invention concerne un composant magnétique destiné à un dispositif à actionnement magnétique tel qu'une vanne électromagnétique, le composant magnétique étant composé de l'alliage mentionné préalablement. Un autre aspect de l'invention concerne une vanne électromagnétique qui comprend un coeur magnétique mobile qui est composé de l'alliage mentionné préalablement.
Patent CA-2451016-A1 (CA)
Title: Method and apparatus for measuring or estimating the center of gravity, flexibility or length of an object and diverting such object on a high-speed conveyor
Inventor: PRUTU VICTOR NICHOLAS
IPC: G01G11/00
Filed: 2002-08-22
Abstract: A method and apparatus for measuring and sorting parcels (200), including th e concept of determining at least one component of the gravity center (CG) of said parcels (200). Determination of the gravity center (CG) component includes the use of a tilting action (30) in combination with the use of sensors (31-34) to sense the movement of the parcels (200) as they tilt. Another concept includes the use of sensors (31-34) to determine whether a parcel is sufficiently rigid (200) to provide a tilting action, or whether t he parcel is flexible (500) and thus does not provide a tilting action so much as it provides a flexing action over the pivot point (25).
Patent CA-2452903-A1 (CA)
Inventor: GALLOWAY GREGORY G
IPC: E21B7/08
Filed: 2003-12-12
Abstract: The present invention generally relates to methods for drilling a subsea wellbore and landing a casing mandrel in a subsea wellhead. In one aspect, a method of drilling a subsea wellbore with casing is provided. The method includes placing a string of casing with a drill bit at the lower end thereof in a riser system and urging the string of casing axially downward. The method further includes reducing the axial length of the string of casing to land a wellbore component in a subsea wellhead. In this manner, the wellbore is formed and lined with the string of casing in a single run. In another aspect, a method of forming and fining a subsea wellbore is provided. In yet another aspect, a method of landing a casing mandrel in a casing hanger disposed in a subsea wellhead is provided.
Patent CA-2453518-A1 (CA)
Inventor: HAIDINGER WOLFGANG
IPC: A61K39/00
Filed: 2002-07-11
Abstract: La présente invention concerne des préparations de fantômes bactériens sensiblement exempts de cellules bactériennes vivantes et/ou d'acides nucléiques, et leur utilisation dans des préparations pharmaceutiques.
Patent CA-2453746-A1 (CA)
Title: Hot melt adhesive based on acrylic block copolymers
Inventor: PAUL CHARLES W
IPC: C09J153/00
Filed: 2003-12-19
Abstract: High performance, low viscosity hot melt adhesives are obtained using acrylic block copolymers. The level of acrylic block copolymer in the adhesive formulation is less than 50% by weight.
Patent CA-2455663-A1 (CA)
Title: Radiotherapy apparatus
Inventor: WAKAMOTO IKUO
IPC: A61N5/10
Filed: 2002-08-23
Abstract: A radiotherapy apparatus comprising an irradiation head (220) having a linear accelerator and an intra-head waveguide unit whose one end portion is electromagnetically connected to the linear accelerator, a supporting moving mechanism (210) which supports and moves the irradiation head on predetermined first spherical coordinates, a microwave oscillator (230) which generates microwaves to be supplied to the irradiation head, and which is placed in a stationary position, a fixed waveguide unit (240) having one end portion electromagnetically connected to the microwave oscillator, and the other end portion positioned on the supporting moving mechanism, and a moving waveguide unit (250) having one end portion electromagnetically connected to the other end portion of the fixed waveguide unit positioned on the supporting moving mechanism.
Patent CA-2457728-A1 (CA)
Inventor: NOHARA TOSHIKATSU
IPC: C08K7/02
Filed: 2002-10-31
Abstract: Provided are a matrix resin composition for fiber reinforced plastic, which comprises a bifunctional or trifunctional liquid diisocyanate, a bifunctional polyol and a bifunctional chain extender containing an active hydrogen group, with a molar ratio of the functional groups of the diisocyanate, polyol and chain extender of 5.0 to 1.0 : 1.0 : 4.0 to 0, respectively; and a process for producing fiber reinforced plastic, which comprises impregnating a fibrous material with the resin composition and then curing. The present invention makes it possible to produce a molding containing fibers densely, having excellent strength and inflatability, in the production of an FRP molding by using a thermosetting resin having an extended pot life.
Patent CA-2458023-A1 (CA)
Inventor: LAU LILIP
IPC: A61F2/00
Filed: 2002-09-10
Abstract: L'invention concerne un harnais cardiaque configuré pour entourer une partie du coeur du patient dans le but d'exercer sur lui une force de compression pendant au moins un cycle cardiaque. Ce harnais peut comprendre une pluralité de modules individuels assemblés ex vivo ou in vivo. Ces modules peuvent posséder des caractéristiques physiques différentes, par exemple, une élasticité distincte, et peuvent comprendre ou pas des charnières à ressort. Certaines parties du harnais cardiaque peuvent être reliées les unes aux autres au moyen d'un système de couplage, tel qu'une fermeture éclair.
Patent CA-2458247-A1 (CA)
Inventor: EDELSTEIN NOAH
IPC: G06F21/00
Filed: 2004-02-17
Abstract: A server is implemented with a modified file open action, which, when a user performs the modified open, initially opens a file without locking the file. When a user indicates (either explicitly or implicitly) that the user is attempting to or intending to open the file, the file can then be locked for editing. In this way, the default action when a user requests a file is to open the file without denying other users access to the file. Then, when the user indicates that editing should occur, the lock for the file is obtained.