baber/WOPTO huggingface dataset:
Patent CA-2160258-C (CA)
Title: Method for placement of a scale inhibitor in a formation
Inventor: FIELER ELEANOR ROTH
IPC: E21B37/06
Filed: 1994-05-02
Granted: 2004-06-29
Abstract: A method for placement of a long life scale inhibitor into a formation where variable density scale inhibitors are utilized. A  substantially low density non-reactive fluid is loaded into the intervals (20, 22, 24, 26) of the formation to be treated. Afterwards, a high density first stage scale inhibitor (16) is injected into the interval (20). Thereafter, a low density spacer fluid (18) is injected into the well (10). Next, a second stage high density scale inhibitor having a density lower than the first stage inhibitor is injected into me interval (22). Subsequently, a low density spacer (18) is injected into the well (10). Volume increments ace repeatedly injected with decreasing fluid densities until a desired zone has been treated. The entire treatment is then overflushed with an inert high density fluid. Use of this method allows even inhibitor distribution in intervals of a formation with permeability variations thereby preventing scale build-up.
Patent CA-2161992-C (CA)
Inventor: KEARNEY KEN
IPC: A01F25/16
Filed: 1995-11-02
Granted: 2007-01-16
Abstract: A dust control system and method for controlling the dust emitted into the atmosphere while dumping grain at a pit at grain elevators. The system includes a plurality of sections, including metering sections with sensing device and dump sections with louvers in each section which are opened and closed in response to predetermined signals. The predetermined signals may be electrically generated or manually applied to ensure that the proper louvers are opened or closed so that the air and dust in the pit does not escape into the atmosphere during the unloading of grain.
Patent CA-2164377-C (CA)
Inventor: PETERSEN STEEN AGERLIN
IPC: E21B47/16
Filed: 1995-12-04
Granted: 2006-07-11
Abstract: A method and equipment are described for performing measurements while drilling for oil or gas, in particular VSP-measurements employing a seismic source together with sensors such as hydrophones and/or geophones connected to a memory- and calculation device for storing and processing the seismic signals. The seismic source (2) is placed at or in the vicinity of the surface of the earth whereby signals generated by the source are detected by the hydrophones (3,5) or the geophones located in the vicinity of the source (2) at the surface and in the drill string (4). The geophones or the hydrophones (5) in the drill string transmit the detected signals to a memory- and calculation unit (6) in the drill string that processes and transmits the signals completely or partly to a central data processing unit (10) on the rig (7). The hydrophones or the geophones (3) at the surface simultaneously transmit the detected signals to the central data processing unit at the surface, while chronometers (8,9) showing identical times, connected to the source and to the memory- and calculation device in the drill string make possible a precise calculation of the travel time of the seismic signal between the source (2) and the geophones or the hydrophones in the drill string.
Patent CA-2165617-C (CA)
Title: Thermoplastic polyurethanes with improved melt flow
Inventor: PUDLEINER HEINZ
IPC: C08G18/66
Filed: 1995-12-19
Granted: 2009-02-10
Abstract: A thermoplastic polyurethane elastomer is disclosed obtained by reacting A) diisocyanates, B) polyhydroxy compounds and/or polyamines, with C) as chain extenders mixtures of C1) benzene substituted with at least two hydroxyalkyl, hydroxyalkoxy, aminoalkyl and/or aminoalkoxy groups and C2) an alkanediol with 4 to 44 C atoms. The reaction is further characterized in that the molar ratio C1:C2 = 60:40 to 95:5 and in that the equivalent ratio of NCO groups to the sum of the NCO-reactive groups is about 0.9 to 1.20
Patent CA-2171996-C (CA)
Inventor: DAMEN THEODOOR CHARLOUIS
IPC: G06E3/00
Filed: 1996-03-18
Granted: 2000-02-15
Abstract: An optical image processor includes a nonlinear active gain medium for recording an interference pattern that corresponds to the Fourier transform of an input image or the multiplicative product of the Fourier transforms of two respective input images.
Patent CA-2173617-C (CA)
Inventor: DUFOUR RENEAU
IPC: B01F25/64
Filed: 1994-09-23
Granted: 2002-11-26
Abstract: Disclosed is a centrifugal liquid pump, preferably of the rotary disc type, which incorporates a gas injection assembly of very simp le yet efficient structure, whereby up to 15 % per volume of a gas such as air may be mixed with the pumped liquid. The gas injection i s achieved with a gas feed pipe (33) that enters the pump through its axial in let and with a plurality of gas injector pipes (41) that  projects from the gas feed pipe radially within the impeller.
Patent CA-2174327-C (CA)
Title: Combination of progesterone antagonists and anti-oestrogens with partial agonistic action for use in hormone-replacement therapy for peri- and post-menopausal women
Inventor: CHWALISZ KRISTOF
IPC: A61K31/38
Filed: 1994-10-17
Granted: 2007-05-22
Abstract: This invention describes the use of at least one compound having a progesterone-antagonistic (PA) action and at least one compound having an antiestrogenic (A?) action with a simultaneous partial agonistic action for the production of pharmaceutical agents for hormone substitution therapy (HRT) for perimenopausal and postmenopausal women. In the case of combined use of progesterone antagonist and antiestrogen, the stimulation of the endometrium by the progesterone antagonist that is caused by its partial agonistic action when an antiestrogen is used by itself is inhibited. For example, a pharmaceutical agent according to the invention contains onapristone (progesterone antagonist) and tamoxifen (antiestrogen).
Patent CA-2175063-C (CA)
Title: System and method for authenticating software carriers
Inventor: OSTROVER LEWIS S
IPC: G11B20/04
Filed: 1994-10-13
Granted: 1997-12-30
Abstract: A disk player that will play only authorized disks. Predetermined data blocks, including those in the lead-in section of the disk which contain content related data, are processed to derive an authorization code. The authorization code is stored on the disk in encrypted form, using the private key of a public-key cryptosystem pair. The player processes the same disk data to derive a computed code; the player also uses the paired public key to decrypt the encrypted authorization code on the disk. Play of the disk ensues only if the decrypted authorization code matches the computed code. The same technique can be used to control not play of the disk as a whole, but play in certain specific modes.
Patent CA-2180744-C (CA)
Title: Fluid coupling with adjustable pressure relief valve
Inventor: MARRISON WILLIAM C
IPC: F16L37/30
Filed: 1995-02-23
Granted: 1998-10-06
Abstract: A quick disconnect coupling (10) for a liquid handling system is disclosed. When disconnected the first and second coupling members (11, 12) are valve closed. The second coupling member (12) includes an adjustable pressure relief feature. By moving an adjustable member (41), the operating pressure for the pressure relief can be varied and set at a desired level.
Patent CA-2186583-C (CA)
Title: Digital vcr with non-standard speed playback
Inventor: SAEKI TOMOKI
IPC: H04N5/00
Filed: 1995-04-03
Granted: 2005-06-14
Abstract: As depicted in the figure above, the instant invention provides a "trick play"  method for recording MPEG compatible advanced television (ATV) signals. The system comprises an ATV  decoder (100) a "trick play" processor (200), and an SD DVCR (300). Trick play" processor (200) compresses image signals from decoder (130) to form a "trick play" data stream (251). The "trick play" data stream is multiplexed in sector constructor (340), with the received data stream, from block structurer (330), to form a record signal. Multiplexer (340) ensures that "trick play" data stream (251) is recorded at specific track locations by recording system (350), these specific track locations facilitate "trick play" reproduction at a plurality of speeds in both forward and reverse directions.  The video processor (150) provides a selection function for switching between ATV and "trick play" video images.
Patent CA-2192916-C (CA)
Title: Substituted chromanylsulfonyl(thio)ureas, processes for their preparation, their use in pharmaceutical preparations, and pharmaceutical preparations comprising them
Inventor: ENGLERT HEINRICH CHRISTIAN
IPC: A61K31/352
Filed: 1996-12-13
Granted: 2006-05-16
Abstract: Substituted chromanylsulfonyl(thio)ureas, processes for their preparation, their use in pharmaceutical preparations, and pharmaceutical preparations comprising them Chromanylsulfonyl(thio)ureas of the formula I      are useful pharmaceuticals for the treatment of cardiac arrhythmias and for the prevention of sudden heart death due to arrhythmia. They can be used as antiarrhythmics and are suitable for the prevention of sudden heart death, for the treatment of cardiac insufficiency and also heart failure as a result of the effects of shock.
Patent CA-2201531-C (CA)
Title: Intravenous tube safety apparatus
Inventor: LYNN KENNETH
IPC: A61M39/28
Filed: 1992-09-25
Granted: 2000-09-05
Abstract: The present invention provides an apparatus for use in a peristaltic pump (20) which prevents an inadvertent free flow condition prior to loading or after removal of an I.V. tube (26) in the peristaltic pump (20) and which also prevents the inadvertent occlusion of a loaded I.V. tube (26) in the peristaltic pump (20).  A standard I. V. tube (26) has a slide clamp (109) provided thereon.  The apparatus includes an I.V. tube groove (29) into which the I. V. tube (26) is positioned, a slide clamp receiving area (62) into which the slide clamp (109) is inserted, and a biased sliding member (81) which the inserted slide clamp (109) engages such that the I.V. tube (26) cannot be loaded into the apparatus without the slide clamp (109) occluding the I.V. tube (26).  The present invention also contemplates a slide clamp (109') compatible with the apparatus having a surface pad (125) for facilitating automated identification of the slide clamp (109') in cooperation with a non-obstructive sensor (85) in the safety apparatus.
Patent CA-2201896-C (CA)
Title: Fabric softening composition containing chlorine scavengers
Inventor: SWARTLEY DONALD MARION
IPC: C11D3/37
Filed: 1995-08-08
Granted: 2001-10-02
Abstract: The present invention relates to a solid particulate or liquid rinse-added fabric softening composition containing specific chlorine scavengers. The solid particulate composition comprises from about 50 % to about 95 % by weight of the composition, of biodegradable, cationic quaternary ammonium fabric softening compound and an effective amount of chlorine scavenger selected from the group consisting of: amines; ammonium salts; amino acids, but not lysine; polyamino acids; polyethyleneimines; polyamines, but not di(higher alkyl)cyclic amines nor their condensation products;  polyamineamides; polyacrylamides; and mixtures thereof. The solid particulate composition further comprises from about 0 % to about 30 %, by weight of the composition, of a modifier, for viscosity, dispersibility, or both; and from about 0 % to about 20 % by weight of the composition, of a pH modifier. The liquid composition comprises from about 0,5 % to about 50 % by weight of the composition, of biodegradable, cationic quaternary ammonium fabric softening compound, an effective amount of chlorine scavenger selected from the same group as for the solid particulate composition, from about 0 % to about 30 %  by weight of the composition of a modifier for viscosity, dispersibility, or both, and the balance comprising a liquid carrier selected from the group consisting of water, C1-C4 monohydric alcohols, C2-C8 polyhydric alcohols, liquid polyalkylene glycols, propylene carbonate, and mixtures thereof. The liquid compostions have a pH of from about 2 to about 5.
Patent CA-2206035-C (CA)
Inventor: SZECKET ALEXANDER
IPC: B23K20/08
Filed: 1997-05-23
Granted: 2006-05-16
Abstract: A method of producing an hermetically sealed bond between a first metal and a second metal wherein the first metal comprises a first portion and a second portion, the method comprising (a) positioning the second portion and the second metal in generally spaced apart parallel relation; and (b) propelling the first portion into collision with the second metal so as to produce the hermetically sealed bond between the first portion and the second metal. The propulsion is preferably effected by a high velocity explosive charge of 5,500 - 9,000 m/s. The improved resultant bond is hermetically sealed. The process is of value in providing an hermetically sealed chamber, cavity or envelope having improved sealed properties.
Patent CA-2209541-C (CA)
Inventor: MONTALBANO JOHN RICHARD
IPC: G06F17/30
Filed: 1997-07-04
Granted: 2001-10-09
Abstract: A system and method provide a multimedia bookmark for a hypertext  markup  language  file  that  has  Universal  Resource Locator  (URL).   A user wishing to later revisit a presently loaded and displayed HTML file requests the browser to store a bookmark.   The browser scans the HTML file for a keyword.   If the keyword is detected, the browser locates a description of the location of a multimedia bookmark data  (MBD)  file that is disposed  at  a  predetermined  position  in  the  HTML  file  in relation to the keyword.  The browser stores the MBD file with the URL as a multimedia bookmark.  If the browser does not find a keyword,  it scans the HTML document for TITLE information. If detected, the TITLE information is stored with the URL as a traditional, text-only bookmark. The user recalls his list of bookmarks to revisit the HTML file, and is presented with a set of multimedia bookmark representations  (MBRs)  generated from the stored MBDs, as well as text-only bookmarks.   The browser may  change  the  appearance  of,  animate,  or  present  audio accompaniment to an MBR when the user places his cursor over or selects the MBR.   Upon selecting a MBR or text-only bookmark, the browser loads and displays the HTML file at the associated URL.
Patent CA-2209571-C (CA)
Inventor: HILTON MICHAEL EUGENE
IPC: A01N25/18
Filed: 1996-01-02
Granted: 2000-11-28
Abstract: A pouch package, containing a volatile solution-impregnated patch, is made of a peelable barrier film. The pouch envelops an absorbent substrate saturated preferably with bug repellent fluid. A PSA (pressure sensitive adhesive) coated backing film is laminated to the absorbent substrate. The backing film has a connecting portion which is peelably sealed to the inside of the pouch. When the pouch is peeled open, the PSA coated backing film is exposed and placed against a target surface, such as a patch wearer's clothing. Finally, the side of the pouch facing the absorbent substrate is peeled off the backing film connecting portion to expose the absorbent substrate. A key to functionality of the pouch package is differential adhesion. First, the pouch barrier film must be peelable from itself, yet it must not adhere to the pressure sensitive adhesive on the backing film. A release paper may be used to cover the PSA when peeling the pouch open. Second, the pouch film must be peelable from the backing film connecting portion without disturbing the bond between the fastening surface and the target surface. Third, the backing film must be laminated to the absorbent substrate more strongly than the PSA adheres to the backing film, so that when the patch is removed from the target surface, the PSA stays with the patch.
Patent CA-2210675-C (CA)
Inventor: NADAUD JEAN-FRANCOIS
IPC: A61K8/00
Filed: 1997-07-24
Granted: 2003-03-11
Abstract: La présente invention a pour objet de nouveaux dérivés de la mélatonine de formule générale (I)  (voir formule I)  dans laquelle:  R1 représente un radical alkyle inférieur,  R2 représente un atome d'hydrogène ou un radical alkyle inférieur, et  R3 représente un atome d'hydrogène ou un radical acyle inférieur, le radical hydroxyle sur le noyau indole étant situé en position 4, 6 ou 7.  Ces dérivés présentent une activité anti-radicaux libres améliorée et les compositions dermo-cosmétiques les comprenant.
Patent CA-2214417-C (CA)
Inventor: LECOMTE FABRICE
IPC: C01B17/05
Filed: 1997-09-15
Granted: 2006-05-02
Abstract: On décrit un procédé et un dispositif de traitement d'un gaz contenant de l'hydrogène sulfuré et de l'anhydride sulfureux dans lequel on met en contact dans au moins un réacteur-contacteur (2) gaz-liquide à une température adéquate le gaz avec u n solvant organique (1) contenant un catalyseur et , on récupère un gaz (20) ne contenant sensiblement plus d'hydrogène sulfuré et d'anhydride sulfureux. Cet effluent contient du soufre vapeur. Il est refroidi par mélange avec un mélange solvant-eau (14) ou par du solvant refroidi par un échangeur thermique (40) dans une zone de refroidissement (7) de manière à obtenir une suspension de cristaux de soufre dans le solvant. O n sépare le soufre cristallisé du solvant dans une zone de séparation (30) et on recycle le solvant refroidi (13). On obtient un effluent (17) exempt de soufre vapeur.
Patent CA-2215653-C (CA)
Inventor: KIMOTO KIYOHARU
IPC: F02M13/08
Filed: 1997-09-15
Granted: 2004-04-27
Abstract: A fuel supplying device for an engine comprises a carburetor (1) having a mixing body (2) in which a venturi passage (3) is provided, a float chamber (4) being arranged in the mixing body (2), a liquid fuel nozzle (5) communicating with the float chamber (4), a liquid fuel nozzle outlet (6) facing the venturi passage (3). The mixing body (2) is provided with a gaseous fuel nozzle (7).      The liquid fuel nozzle outlet (6) and a gaseous fuel nozzle outlet (8) are faced to the same venturi passage (3) so as to be able to supply the alternative of a liquid fuel or a gaseous fuel.
Patent CA-2216536-C (CA)
Inventor: NORDIN ULF
IPC: B30B9/18
Filed: 1996-03-11
Granted: 2006-10-31
Abstract: The invention relates to a conical screw press for compressing and/or for removing liquid from bulk material, comprising a screw with screw thread and core in a housing, means for rotating the screw in the housing, an inlet opening for the bulk material from which liquid is to be removed, an outlet opening for the bulk material from which liquid has been removed, and at least one outlet opening for the liquid which has been extracted. The characteristic features of the invention are that: a) the screw (1) is dimensioned, within at least the greater portion of the length of the screw between the inlet opening for bulk material and the outlet opening for bulk material, such that the external diameter (D) of the screw thread and the diameter (d) of the screw core change axially in the screw press from a first arbitrary axial position, where the external diameter of the screw thread=D1 and the diameter of the screw core=d1, to an arbitrary second axial position, situated downstream in the direction of the bulk material where the external diameter of the screw thread=D2 and the diameter of the screw core=d2, in accordance with the formulae (I) and (II) where K is a compression ratio, i.e. the volume of the bulk material at the first position in relation to the volume of the bulk material at the second position, and n is a number between 2.5 and 3.5; and b) the angle a of the screw threads in relation to a plane at right angles to the screw shank varies by at most 20 % in either direction from a constant angle in relation to the said plane within the said portion of the length of the screw.
Patent CA-2218952-C (CA)
Title: Closure assembly for a tank filler neck
Inventor: FOLTZ DEAN C
IPC: B60K15/04
Filed: 1997-10-15
Granted: 2001-04-17
Abstract: A filler neck closure assembly (10) is provided for a vehicle fuel tank filler neck (12).  The filler neck closure assembly (10) includes a housing (35) configured to mount in the filler neck (12) and formed to include a sealing surface (124).  A pressure-relief valve (40) is positioned to lie in the housing (35).  The pressure-relief valve (40) includes a nozzle-receiving portion (133) and a sealing portion (135).  The nozzle-receiving portion (133) is formed to include a nozzle-receiving opening (154) that receives a pump nozzle (24) during refueling of the fuel tank (14).  The sealing portion (135) is movable relative to the housing (35) between a closure-sealing position sealingly engaging the sealing surface (124) and a pressure-relief position away from the sealing surface (124) to define an opening therebetween to vent fuel vapor (238) from the fuel tank (14) when tank pressure exceeds a predetermined maximum pressure.  The nozzle-receiving portion (133) is configured to move with the sealing portion (135).
Patent CA-2219224-C (CA)
Title: Source routing method for fast connection re-establishment in response to early-arriving trouble report messages
Inventor: MASUO HITOSHI
IPC: H04L45/28
Filed: 1997-10-24
Granted: 2001-12-11
Abstract: In a connection-oriented network, a route table and a network resource table are provided in a source node which updates the network resource table in response to a topology state message which is flooded through the network whenever there is a change in the available network resources. The source node updates the network resource table in response to an early-arriving trouble report message from the network if such a change in the available network resources occurs when a connection is being progressively established or already established from the source node. In response to a connection setup message, the source node fetches a route from the route table and compares a user's requirement such as quality and/or bandwidth with the resource data of the fetched route stored in the network resource table. A connection is established via the fetched route if the resource data of the fetched route in the network resource table indicates that the fetched route can support the requirement.
Patent CA-2221087-C (CA)
Title: Diesel fuel and dispersant compositions and methods for making and using same
Inventor: MALFER DENNIS J
IPC: C10L1/22
Filed: 1997-11-13
Granted: 2006-06-20
Abstract: A diesel fuel additive composition comprising a mixture of a dispersant and a carrier, preferably a liquid carrier fluid. The dispersant comprises at least one member of the group consisting of polyalkylene succinimides and polyalkylene amines, the polyalkylene succinimides being the reaction product of polyalkylene succinic anhydride and a polyamine, the polyalkylene amine being the reaction product of a polyalkylene moiety and amine selected from the group consisting of monoamine and polyamine. The carrier comprises at least one oxygenate selected from the group consisting of polyalkoxylated ether, polyalkoxylated phenol, polyalkoxylated ester and polyalkoxylated amine. The additive composition reduces injector deposits in internal combustion-compression ignition engines. Diesel fuels containing a major portion of a hydrocarbon-based compression ignition fuel and a minor portion of the diesel fuel additive composition, as well as methods of making and using these diesel fuels are also included in the present invention.
Patent CA-2230126-C (CA)
Inventor: DOI MAKOTO
IPC: G11B17/028
Filed: 1998-03-25
Granted: 2001-06-19
Abstract: A disk recording/reproducing device includes a power transmitting mechanism which transmits movement of a pickup while engaging with the pickup, and a disk retaining mechanism which, in response to the movement of the pickup transmitted by the power transmitting mechanism, retains a disk on a turntable or releases retention of the disk. Radially inward movement of the pickup causes the disk retaining mechanism to retain the disk on the turntable, while radially outward movement of the pickup causes the disk retaining mechanism to release retention of the disk. For accomplishing the release of the retention of the disk upon the radially outward movement of the pickup, an operation switching mechanism is provided for changing a position of the power transmitting mechanism to cause the power transmitting mechanism to engage with the pickup upon the radially outward movement of the pickup.