baber/WOPTO huggingface dataset:
Patent CA-2202174-A1 (CA)
Title: Apparatus for increasing the transfer rate of production stimulation fluids through a wellhead of a hydrocarbon well
Inventor: DALLAS MURRAY L
IPC: E21B33/068
Filed: 1997-04-08
Abstract: An apparatus for increasing the transfer rate of production stimulation fluids through a wellhead of a hydrocarbon well is disclosed. The apparatus includes a mandrel for a wellhead isolation tool and a tubing hanger for use in conjunction with the mandrel. The mandrel includes a bottom end to which an annular seal is bonded. The annular seal cooperates with a sealing surface in a top end of the tubing hanger to isolate the wellhead equipment from the high pressures and corrosive and/or abrasive materials pumped into the well during a production stimulation treatment. The novel construction for the mandrel and the tubing hanger eliminates the requirement for a packoff assembly attached to a bottom of the mandrel and thereby permits the mandrel to have a larger internal diameter for increasing the transfer rate of production stimulation fluids through the wellhead. The advantages include a mandrel which accommodates faster transfer rates, is less prone to catch on constrictions as the mandrel is stroked through the wellhead and requires no packoff assembly for sealing within the production tubing. A further advantage is the provision of a mandrel for a wellhead isolation tool that eliminates all joints between the high pressure tubing connector and the production tubing to minimize washout during production stimulation using abrasive proppants.
Patent CA-2202475-A1 (CA)
Inventor: BELL OSWALD
IPC: B42D9/04
Filed: 1995-10-09
Abstract: L'invention concerne un procédé et un dispositif pour la désacidification de produits imprimés ou de papiers de tous types, en particulier de livres. En vue d'éviter l'effet dit de "demi-lune", c'est-à-dire d'un traitement défectueux dans la zone du dos (7) d'un livre, par suite des espaces intermédiaires étroits entre les pages individuelles, l'invention est caractérisée en ce que le jet d'air, par exemple sous forme d'un jet double constitué par un jet d'ouverture (10) et par un jet de substance active (11), est positionné par rapport au livre (1), de telle façon que le jet de substance active et/ou le jet d'ouverture soient sensiblement introduits à partir d'un côté (par exemple, du revers) du livre (1) et déchargé via le côté opposé (par exemple, le dessus). Pour plus d'efficacité, le jet d'ouverture (10) et le jet de substance active (11) sont inclinés vers le dos (7) du livre. Le jet de substance ative (11) est déplacé par rapport au livre (1) au moyen d'un bras pivotant (3).
Patent CA-2202805-A1 (CA)
Inventor: WALKER JANE SARAH
IPC: D05B97/12
Filed: 1997-04-16
Abstract: A transparent flat sheet template facilitates joining and cutting of pieces of fabric used to make conventional quilting units, prior to assembly of the units into in a quilt.  The template comprises a first edge having a first straight edge portion and a concave edge portion,  the concave edge portion being a portion of a circle.   The template has second and third straight edges disposed perpendicularly to each other, and a fourth edge disposed parallel to the second edge.  The template also includes an arcuate guideline which is generally similar in size and shape to the concave edge portion, and a grid of first and second sets of straight guidelines marked on the template. The first set of guidelines are parallel to each other and to the first straight edge portion of the template.  The second set of guidelines are parallel to each other and to the second edge of the template.  The straight guidelines are used to align the template with edges of a square of fabric.   The concave edge portion facilitates accurate centering of a fabric circle on the square of fabric, and the arcuate guideline facilitates accurate cutting of the sewn fabric circle and square of fabric to produce quilting units.
Patent CA-2204734-A1 (CA)
Inventor: MAURO MARINA
IPC: C07C231/24
Filed: 1996-08-02
Abstract: This invention refers to a process for the crystallization from water of S-N,N'-bis[2-hydroxy-1-(hydroxymethyl)ethyl]-5-[(2-hydroxy-1-oxopropyl)amino]-2,4,6-triiodo-1,3-benzendicarboxamide known as Iopamidol.  According to the process of this invention, a crystalline anhydrous Iopamidol in accordance with pharmacopeia standards can be obtained.
Patent CA-2209131-A1 (CA)
Title: Process for preparing mono and polyaspartates
Inventor: KUREK GERALD
IPC: C07C229/24
Filed: 1997-06-27
Abstract: The present invention relates to a new process for preparing mono and polyaspartates from primary mono and polyamines and maleates in presence of five-membered aromatic ring compounds containing nitrogen atoms in the ring structure as catalysts and use of these mono and polyaspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers.
Patent CA-2209294-A1 (CA)
Title: Trousers with hip protectors
Inventor: KRISTENSEN JOHANNES NYVANG
IPC: A41D13/05
Filed: 1995-01-05
Abstract: Flexible hip protectors (1) of an approximately domed shape are located and fixed in positions confronting the neck of either femur in so-called usual pants (21) so as to cover corresponding portions of the necks of the femurs.  Therefore, if a person wears the pants (21), the hip protectors (1) are always located at exact positions so as to protect the necks of the femurs.  Accordingly, the pants (2) with the protectors (1) are effective for wearing the protectors (1).
Patent CA-2209306-A1 (CA)
Inventor: EL-RABAA A WADOOD
IPC: E21B43/26
Filed: 1996-01-11
Abstract: Il est possible de fracturer hydrauliquement une formation souterraine (13) entourant un forage (10) en injectant dans le forage (10) depuis la surface (11) un liquide à effet fracturant par l'intermédiaire d'une conduite d'injection (19) de fluide. La chute de pression est mesurée le long de la conduite d'injection (19) pendant le passage du fluide d'injection. La fermeture des fractures et la contrainte minimale in-situ sont déterminées aux points où la chute de pression équivaut seulement à la différence de pression hydrostatique le long de la conduite d'injection (19).
Patent CA-2210583-A1 (CA)
Title: Cooking grill
Inventor: HERMANSSON A E
IPC: A47J37/06
Filed: 1997-07-16
Abstract: A cooking grill having upper and lower cooking plates supported between first and second supports is disclosed. The upper and lower cooking plates are each hingedly connected to the supports at a rear hinge axis. The upper cooking plate may be manually tipped to a raised position. The lower cooking plate is automatically tipped downwardly to a food ejection position by means of an actuator. An ejector is provided for positively ejecting the cooked food at the end of the cooking cycle, onto a support or receiving tray, from which cooked food may be removed by hand.
Patent CA-2210654-A1 (CA)
Title: High speed, high temperature hybrid magnetic thrust bearing
Inventor: KING BRIAN P
IPC: F01D5/28
Filed: 1997-07-16
Abstract: The present invention contemplates a hybrid magnetic bearing thrust disk.  In one embodiment the hydrid magnetic bearing thrust disk comprises a high magnetic permeable portion that is supported by a high specific strength circumferential ring.  The high specific strength circumferential ring resisting the dynamic loads applied to the hydrid thrust disk.
Patent CA-2212386-A1 (CA)
Title: Cytoplasmic antiproteinase-2 and cytoplasmic antiproteinase-3 and coding sequences
Inventor: SPRECHER CINDY A
IPC: A61K35/76
Filed: 1996-02-02
Abstract: Cytoplasmic Antiproteinase-2 and Cytoplasmic Antiproteinase-3 nucleic acids and serine protease inhibitor proteins encoded thereby are useful in the purification of proteins and in the treatment of inflammatory diseases and diseases involving apoptosis.
Patent CA-2213708-A1 (CA)
Title: Fractionator
Inventor: STRID KENT
IPC: D21D5/00
Filed: 1996-03-06
Abstract: A fractionator for fractioning a suspension in at least two fractions, including a drum (1) rotatable about a substantially horizontal shaft (3) and having inlet means (31) for suspension and at least one outlet means for fractions. The drum (1) includes at least two walls (21, 22, ..., 27) curved about the shaft and extending substantially parallel thereto in the longitudinal direction thereof, said walls defining between them a fluid channel substantially parallel to the shaft (3). The drum is open at both ends so that each flow channel defined by a pair of walls (21/22, 22/23, ..., 26/27) has its own inlet and its own outlet, all inlets (31) being located in the one and the same end of the drum and all outlets in the opposite end of the drum.
Patent CA-2214350-A1 (CA)
Title: Polyol ester compositions with unconverted hydroxyl groups
Inventor: KREVALIS MARTIN ANTHONY
IPC: C10N40/20
Filed: 1996-03-14
Abstract: A synthetic ester composition which exhibits thermal and oxidative stability, lower friction coefficient and lower wear, wherein the ester composition comprises the reaction product of a branched or linear alcohol having the general formula R(OH)n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms and n is at least 2; and at least one branched mono-carboxylic acid which has a carbon number in the range between about C5 to C13; wherein the synthetic ester composition has between about 5-35 % unconverted hydroxyl groups, based on the total amount of hydroxyl groups in the branched or linear alcohol.
Patent CA-2215817-A1 (CA)
Inventor: THEIL THOMAS
IPC: G01D5/165
Filed: 1997-09-19
Abstract: In a circuit arrangement and a method for producing a plurality of analog signals which vary in dependence on the position of one of two mutually movable bodies relative to each other,  a single sensor measuringly detects the position to be monitored. The measurement value ascertained by means of the sensor is used as the basis for producing a digital signal from which an analog signal is derived by digital/analog conversion  for  each  of  a  plurality  of  separate  receivers  for controlling subsequently arranged units.
Patent CA-2217199-A1 (CA)
Title: New method of combating insects
Inventor: TWINN DAVID CHARLES
IPC: A01N47/02
Filed: 1996-03-27
Abstract: Use of 1-phenylpyrazole derivatives selected from 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylthio pyrazole, 5-amino-3-cyano-1-(2,6-dichloro-4- trifluoromethylphenyl)-4-trifluoromethylsulfinyl pyrazole and 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylsulfonyl pyrazole, to obtain lasting control of cockroaches or ants or of a population of cockroaches or ants. The 1-phenylpyrazole derivatives are applied in the form of a thin dry layer or embedded in a thin dry layer, which is applied to a surface on which the insects are moving or expected to move, which layer the insect is not able to seize or bite or eat directly. Suitable surfaces include glass, ceramics, concrete, plastic surfaces, metallic or wooden surfaces, and textiles. The thin dry layer contains an effective amount of the 1-phenylpyrazole derivative, the effective amount being from 0.01 g to 10 g per 100 square meters.
Patent CA-2217651-A1 (CA)
Title: Substituted pyridine derivatives, their preparation and their use as modulators of acetylcholine receptors
Inventor: COSFORD NICHOLAS D
IPC: C07D213/38
Filed: 1996-04-04
Abstract: In accordance with the present invention, there are provided compounds having the structure (I), wherein: A, B, N.alpha., R.alpha., Z, R2, R4, R5 and R6 are defined as in the description. The compounds of the invention displace acetylcholine receptor ligands from their binding sites. Invention compounds may act as agonists, partial agonists, antagonists or allosteric modulators of acetylcholine receptors, and are useful for a variety of therapeutic applications, such as the treatment of Alzheimer's disease and other disorders involving memory loss and/or dementia (including AIDS dementia); disorders of attention and focus (such as attention deficit disorders); disorders of extrapyramidal motor function such as Parkinson's disease, Huntington's disease, Gilles de la Tourette syndrome and tardive dyskinesia; mood and emotional disorders such as depression, panic, anxiety and psychosis; substance abuse including withdrawal syndromes and substitution therapy; neuroendocrine disorders and dysregulation of food intake, including bulimia and anorexia; disorders of nociception and control of pain; autonomic disorders including dysfunction of gastrointestinal motility and function such as inflammatory bowel disease, irritable bowel syndrome, diarrhea, constipation, gastric acid secretion and ulcers; pheochromocytoma; cardiovascular dysfunction including hypertension and cardia arrhythmias, comedication in surgical procedures, and the like.
Patent CA-2218173-A1 (CA)
Inventor: MURPHY WILLIAM
IPC: A61K38/00
Filed: 1996-04-03
Abstract: Peptide qui constitue une variante du facteur libérant l'hormone de croissance humaine. Ce peptide, contenant 23-28 résidus d'acides aminés, diffère de son homologue endogène au moins aux positions 8, 9, 16, 24, 25, 27 et 28, et a la capacité de stimuler la libération d'hormone de croissance.
Patent CA-2219516-A1 (CA)
Inventor: BLIDBERG INGEMAR
IPC: H02M7/797
Filed: 1997-11-14
Abstract: A VSC converter has each current valve of a phase leg formed by a plurality of units of semiconductor elements and rectifying members, located on top of each other forming at least one stack. The phase leg is constructed according to the flat cable principle with the phase leg formed by such stacks arranged side by side in pairs at small distances (d) running back and forth. A cooling plate of electrically conducting material is arranged between each unit in the stacks.
Patent CA-2222244-A1 (CA)
Title: Method for setting up a telephone connection and an exchange system
Inventor: JYVAELAE PETRI
IPC: H04M3/60
Filed: 1996-05-23
Abstract: The invention relates to a method for setting up a telephone connection in a telephone system which system comprises several exchange systems (100 and 116). The invention also relates to an exchange system (100) operating in accordance with the method. A queuing list is used in the method, which list is maintained in such a manner that when no free connection is available, the operator (107) places information about the received call order in the queuing list to wait for a connection to become free. In the method, the loading of connections (108a to 108c, 114 and 115) is monitored and when the required connection (108a to 108c, 114 and 115) is detected to be free, the connection (108a to 108c 114 and 115) is reserved for the use of the operator (107) and the operator (107) is sent information about the call order on the queuing list. After this the operator (107) can put the call through. The method makes the search for free connection automatic in congested directions and therefore the work of operators (107) will be easier.
Patent CA-2224429-A1 (CA)
Title: Wire part and process for forming a multi-ply fiber web
Inventor: MOHRHARDT GUNTHER
IPC: D21F11/04
Filed: 1997-12-10
Abstract: A wire section for forming a multi-ply fiber web. The wire section includes a first belt which advances a first fiber ply toward a couch roll defining a combining section. A twin-wire zone of the wire section includes first and second wires between which a second fiber ply is initially formed in a gap former.  The second wire separates from the first wire and then the first wire supporting the second fiber ply meets the first belt supporting the first fiber ply at the couch roll of the combining section to form the multi-ply fiber web. The twin-wire part is arranged upstream of the combining section along the running direction of the first belt. The second fiber ply runs on the first wire into the combining section at an angle less than 90° with respect to the belt entering the combining section. The path of the wires from the forming roll to the combining section is disclosed. A suction box or arrangement holds the second fiber ply to the first wire when the first and second wires separate.     Dewatering foils press on the wires moving through the twin-wire zone.
Patent CA-2225919-A1 (CA)
Inventor: IBANEZ BARON JOSE MIGUEL
IPC: B23K26/08
Filed: 1997-04-25
Abstract: The invention relates to a system for marking or perforating by laser and to a marking or perforation process in said system, which is comprised of at least one laser (19) which produces a beam, a supply unit for at least one laser (19), a control means (12) with a control program which controls the laser (19), a deflector (16) particularly an optical-acoustic deflector which produces different beam deflection angles, in this case an optical system traversed by the beam, which produces a marking or a perforation configured like a matrix of points (nxm) on a surface of a product in relative motion between the product to be marked or perforated and the laser beam. The supply unit and/or the deflector (16) may be controlled by the control program. The system of the invention provides for a dynamic control of the marking or perforation resolution in a vertical direction.
Patent CA-2227510-A1 (CA)
Title: Display panels using fibrous field emitters
Inventor: MILLER ARTHUR
IPC: H01J31/12
Filed: 1996-08-06
Abstract: Display panels comprise at least one suspended fibrous cathode containing an electron field emitter. The fibrous cathode is supported by a substrate (10) containing two sets of parallel rows of crests and valleys. The first set of parallel crests (11) and valleys (12) provide the valleys along which the fibrous cathode is aligned. The second set of parallel crests (13) and valleys (14) is perpendicular to the first set. The valleys (14) provide the means for suspending the fibrous cathode.
Patent CA-2227941-A1 (CA)
Title: Method and apparatus for retrieving downhole tools
Inventor: RITORTO LEONARDO
IPC: E21B31/12
Filed: 1998-01-27
Abstract: A downhole retrieving tool, in which a tubular member has a tubing string connector end and a conical retrieving dish on the tubular member spaced from and opening towards the tubing string connector end. Stabilizers are spaced around the tubular member at the tubing string connector end. A retrievable whipstock comprises a concave, with a recess formed in the concave between upper and lower conical walls. The upper side wall intersects the face of the concave to form an anchor point. A method for retrieving a downhole tool, such as a whipstock, in a well, in which a retrieving tool having a retrieving dish is lowered into a well, inserted into the recess to engage an anchor point, and removed from the well. Fluid may be injected through circumferentially spaced fluid passageways communicating with the bore of the tubular member to remove unwanted material from the recess.
Patent CA-2230425-A1 (CA)
Inventor: HENDERSON WILLIAM D
IPC: E21B33/129
Filed: 1998-02-24
Abstract: A slip guidance system is provided to prevent a slip or series of slips from becoming skewed as they are extended toward the casing. The slip has a plurality of parallel tabs on each side which interact with a plurality of dovetails in the cone which retains the slips. As the slips are extended, the parallel tabs ride up in the parallel dovetails, thus preventing the slip from becoming skewed as it is extended toward the casing.
Patent CA-2233770-A1 (CA)
Inventor: HURST DOUGLAS
IPC: G02F1/09
Filed: 1998-05-29
Abstract: The invention named a Magnetoptical Active Data Accelerative System consists of an sequential arrangement of components that utilises a heretofore unrecognised aspect of the Faraday Effect whereby a ray of plane-polarised light is rotated by application of a magnetic field. Within the material it is herewith theorised that the velocity of the photons in the light ray ,become accelerated to beyond the normal velocity of light within the unmagnetised material and thus this invention can be employed within computers and other electronic devices and also fibre-optic systems ,to minimise the data flow delay-time between operating units and memory stacks and other peripheral elements.It is further developed that another arrangement of components also based on the Faraday Effect ,can be manipulated whereby the emerging photon stream will then be travelling in air or vacuum at velocities that are in excess of the accepted velocity of light c ,for application to advanced airspace communication systems, and despite the postulations of the Special Theory of Relativity of 1905.
Patent CA-2235141-A1 (CA)
Inventor: BILLSTR M LARS
IPC: H04W72/12
Filed: 1996-10-18
Abstract: Methods and devices for measuring signal strengths by mobile stations in a wireless communication system are described. More particularly, while transmitting and receiving on a channel, signal strength measurements may be required. For instance, the received signal strength of broadcast information slots at the beginning of a superframe may be measured at predetermined times for several carriers. However, the mobile station may be busy performing information reception or transmission tasks. According to one exemplary embodiment, the signal strength measurments may be delayed when the mobile is transmitting and receiving on a channel, and then more frequent signal strength measurements may be made when there is no communication. In other words, the signal strength measurements do not have to occur uniformly in time, but may be more frequently performed if they have been delayed. Alternatively, the mobile station can "steal" one or more time slots to perform the signal strength measurements by ignoring its tasks of receiving and/or transmitting information.
Patent CA-2235204-A1 (CA)
Title: Soil sampler for taking multiple soil samples from horizontal boreholes
Inventor: COMO CASEY EDWIN
IPC: E21B7/04
Filed: 1998-04-20
Abstract: A soil sampler for horizontally drilled boreholes, includes a hollow cylindrical housing having a longitudinal axis. A sampling port extends through a peripheral sidewall at an angle to the longitudinal axis. A plurality of sample containers are positioned on a rotatable container support within an interior cavity of the housing. The container support is rotated to select one of the sample containers. An actuator moves the selected sample container between an extended sample collecting position and a retracted rest position. In the extended sample collecting position, a remote end of the selected sample container extends through the sampling port. The soil sampler described is capable of taking soil samples at intervals while being pulled along a horizontal borehole.
Patent CA-2239857-A1 (CA)
Title: Dispositif de mesure de la concentration de fibres dans l'air
Inventor: ENCE BRIAN M
IPC: G01N21/53
Filed: 1997-11-03
Abstract: L'invention concerne des dispositifs (100) et des procédés pour mesurer la concentration de fibres dans l'air. Les dispositifs comporte des moyens à écoulement (5 et 6) pour produire un écoulement laminaire sur une partie des fibres (20) d'un échantillon d'air et une source lumineuse (9) pour générer un faisceau lumineux (12) dirigé vers les fibres (20) s'écoulant sous l'effet du flux laminaire de sorte qu'une lumière diffusée soit produite. Ledit dispositif présente aussi un capteur (14) pour capter une partie de cette lumière diffusée et pour produire un signal de sortie à partir duquel une estimation de la concentration de fibres respirables peut être effectuée.