baber/WOPTO huggingface dataset:
Patent CA-2177288-C (CA)
Title: Dosage immunologique rapide permettant de detecter des anticorps ou des antigenes, comprenant l'extraction d'echantillon et la reaction immunogene simultanees
Inventor: STEWART SANDY J
IPC: G01N33/533
Filed: 1994-11-29
Granted: 2007-11-20
Abstract: Cette invention a pour objet un dosage immunologique capable de détecter rapidement diverses substances d'essai qui peuvent être présentes dans un échantillon d'essai. Une caractéristique de cette invention réside dans le fait que l'extraction ou l'isolement de la substance d'essai se produit en même temps que la formation du complexe antigène primaire-substance d'essai. Ce complexe antigène primaire-substance d'essai est ensuite piégé dans une structure en phase solide comprenant une pluralité d'espaces interstitiels qui facilitent la détection rapide et efficace. Le dosage immunologique de cette invention opère sur une plage étendue de conditions ambiantes et sa simplicité est telle qu'on peut l'utiliser en l'absence d'installations de laboratoire.
Patent CA-2177773-C (CA)
Title: New aryl(alkyl)propylamides, process for preparing the same and pharmaceutical compositions containing them
Inventor: LESIEUR DANIEL
IPC: A61P25/28
Filed: 1996-05-30
Granted: 2000-10-03
Abstract: Arylalkyl propylamide derivs. of formula (I), their enantiomers and diastereoisomers and their salts, are new except for N-Ä3-(4-hydroxy-naphth-1-yl)propylÜacetamide or N-Ä3-(4-benzyloxy-naphth-1-yl)propylÜacetamide. In (I), R1 = H, OH, R6 or OR6; R6 = e.g. opt. substd (cyclo)alkyl, opt. substd cycloalkylalkyl, alkenyl, alkynyl, cycloalkenyl, opt. substd phenyl etc.; R1' = R6', OR6', OH, COR7, CH2R7 or OCOR7; R6' = as R6; R7 = opt. substd 1-5C alkyl, opt. substd cycloalkyl or opt. substd cycloalkyl-(1-5C) alkyl, opt. substd phenyl etc.; Het A = e.g. dihydro- or tetrahydronaphthalene, naphthalene, benzothiophene etc.; n = 3-6; R2 = H or alkyl; R3 = C(=X)-R4 or C(=X)-NH-R5; X, X' = O or S; R4 = e.g. H, opt. substd. alkyl, alkenyl, alkynyl, opt. substd. cycloalkyl or opt. substd. cycloalkylalkyl; and R5 = H, opt. substd. alkyl, opt. substd cycloalkyl or opt. substd. cycloalkyl alkyl; with provisos.
Patent CA-2183339-C (CA)
Title: Application of n,n-dialkylamides to control the formation of emulsions or sludge during drilling or workover of producing oil wells
Inventor: ROMOCKI JULIAN
IPC: C09K8/035
Filed: 1995-02-15
Granted: 2002-04-30
Abstract: New compositions are disclosed that are useful for the prevention of sludge or emulsions during the drilling or workover of producing oil wells.  These compositions are comprised of a N,N-dialkylamide of a fatty acid, a hydrocarbon solvent for petroleum and a mutual oil/water solvent.  Also taught and claimed is a method of preventing such sludge or emulsion formation or of breaking the same after it is formed.
Patent CA-2186681-C (CA)
Inventor: GOLDEN TIMOTHY CHRISTOPHER
IPC: B01D53/047
Filed: 1996-09-27
Granted: 2002-04-23
Abstract: Pressure swing adsorption to remove CO2 from a gas stream is conducted using an improved alumina obtained by impregnating a starting alumina with a basic solution having a pH of at least 9, e.g. of a basic compound such as KHCO3, and drying at a temperature low enough to avoid decomposing the basic compound to a form which adsorbs CO2 such that the compound does not regenerate under reduced pressure purging.
Patent CA-2188991-C (CA)
Title: Method and apparatus for production of aluminum alloy castings
Inventor: GARZA-ONDARZA OSCAR
IPC: B22D47/00
Filed: 1996-10-28
Granted: 2007-10-02
Abstract: Method and simplified apparatus for manufacturing aluminum alloys castings, for example those cast aluminum parts utilized in the manufacture of automobile engines: cylinder heads, engine blocks and the like; whereby the castings are cast in a plurality of semi-permanent-type molds, said molds each being movable to a plurality of processing positions along one of a plurality of straight line paths (five in the preferred embodiment), wherein the operations of cleaning, core setting, casting, and casting extraction are performed on each mold at predetermined positions along its respective path and alternating said operations among the molds in order to permit minimization of the number of robot equipment and to increase the aggregate productivity of said molds, since any one processing operation is handled by only one robot arm moving between the plurality of lines seriatim, so that a given process step is performed at any one time only at one of the plurality of lines.
Patent CA-2192132-C (CA)
Inventor: WILDSCHUT GERBEN
IPC: A01K1/00
Filed: 1996-12-05
Granted: 2004-05-04
Abstract: The invention relates to a coupling for coupling an elongate support and a fence, such as a partition between cubicles in a stall. The coupling is characterized by first fixing means for fixing the coupling to the support and second fixing means for fixing the fence to the coupling.
Patent CA-2193846-C (CA)
Inventor: FARRIS BRADFORD L
IPC: G07C9/00
Filed: 1996-05-16
Granted: 2004-02-17
Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver (202) demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes (220) and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor (234) to open or close a movable barrier.
Patent CA-2196636-C (CA)
Inventor: EVANS MICHAEL L
IPC: G01V5/10
Filed: 1997-02-03
Granted: 2000-03-14
Abstract: Apparatus for determining the density of underground formations surrounding a borehole, such as a wireline logging tool or a logging-while-drilling tool, includes a high energy neutron source for irradiating the formations from within the borehole and a detector which detects gamma rays in the borehole resulting from the irradiation of the formations with high energy neutrons. The detected gamma rays are analyzed to determine the density of the formations.
Patent CA-2202540-C (CA)
Title: System and method for skimming digital audio/video data
Inventor: MAULDIN MICHAEL L
IPC: G06F17/30
Filed: 1995-10-12
Granted: 2004-12-07
Abstract: A system and method for skimming digital audio (18) and video data (20) wherein the video data is partitioned into video segments.The method includes, selecting representative frames (64a, 64b, 64c, 64d) from each of the video segments, combining (235) the representative frames to form an assembled video sequence, identifying (230) keywords contained in a transcription of the audio data,extracting (237) portions of the audio data identified as keywords in the identifying step, assembling (239) an audio track in response to the extraction step, and outputting the video sequence in conjunction with the audio track.
Patent CA-2209369-C (CA)
Title: Heating element for water heaters with scale control
Inventor: JACKSON BARRY N
IPC: H05B3/78
Filed: 1997-07-03
Granted: 2000-04-18
Abstract: An improvement  in electrical  elements  for a water heater includes a mass attached to the element for reducing the deposition of hard water scale on element surfaces, particularly in the return bend areas.  In one embodiment, a flow accelerator tube encloses the element.   The flow accelerator tube has an inlet at one end and an outlet at a higher elevation at the opposite end.  Water is induced to flow through the tube because of temperature change.   In another embodiment,  a solid mass with high surface area encloses the return bend areas to increase heat transfer at a lower temperature to reduce scaling and increase element life.
Patent CA-2217459-C (CA)
Title: Configuration d'antennes d'un systeme electronique de surveillance d'articles pour ameliorer la repartition de l'intensite du champ d'interrogation
Inventor: ALICOT JORGE
IPC: H01Q7/04
Filed: 1996-05-22
Granted: 2006-04-25
Abstract: Un système de surveillance électronique d'articles (24) comprend des antennes de réception et d'émission en quadrature pour améliorer la répartition de l'intensité du champ. Une configuration d'antenne d'émission comprend des première et deuxième boucles d'antennes coplanaires adjacentes (42, 44) et un circuit d'excitation (46) pour générer des courants alternatifs respectifs dans les première et deuxième boucles de telle sorte que les courants alternatifs correspondants sont décalés d'un quart de période. Dans une configuration de réception (300), des signaux correspondants reçus à partir de deux boucles d'antennes coplanaires adjacentes (302, 304) sont respectivement décalés en phase de + 45 DEG  et - 45 DEG , et les signaux ainsi décalés en phase sont totalisés. Une configuration d'antenne d'émission annulant les champs lointains comprend quatre boucles (66', 78, 68, 70) fonctionnant sur des phases de 0 DEG , 90 DEG , 180 DEG  et 270 DEG  respectivement. Les quatre boucles peuvent être coplanaires, et tous les segments verticaux de compensation peuvent être déplacés horizontalement les uns par rapport aux autres. Par ailleurs, les boucles de 0 DEG  et 180 DEG  peuvent également être disposées dans un plan commun qui est proche et parallèle d'un autre plan dans lequel des boucles de 90 DEG  et 270 DEG  sont disposées.
Patent CA-2218136-C (CA)
Title: A multi-layer material
Inventor: ALBANESI MARIO
IPC: B65D65/40
Filed: 1996-03-20
Granted: 2001-08-21
Abstract: The present invention relates to a multi-layer material for containing liquid products, specifically for liquid products comprising a hypochlorite bleach. This multi-layer material comprises an inner layer, a layer of adhesive and an outer layer. The multi-layer material according to the present invention further comprises a means which prevents the degradation of the multi-layer material when exposed to the aggressive action of the hypochlorite bleach or components of said bleach.  Specifically, said protecting means impedes that different layers of the multi-layer material de-laminate from each other.
Patent CA-2226771-C (CA)
Inventor: PERREE HENDRIK F
IPC: C07C273/04
Filed: 1998-01-13
Granted: 2007-03-13
Abstract: Method for increasing the capacity of an existing urea process, the existing urea process comprising a reactor (R), a pressure-reduction section (SC) and a urea-recovery section (U), characterized in that (i) a stripping column (S) is added, in which ammonium carbamate from the reaction mixture is stripped with carbon dioxide or is thermally stripped at almost the same elevated pressure, resulting in a gaseous mixture (G1) and a liquid mixture (M4), which liquid mixture (M4) is fed to the pressure-reduction section (SC), (ii) a condenser (C) is added, which is fed with the gaseous mixture (G1), ammonia and optionally carbon dioxide, in which the gaseous mixture (G1) is condensed at almost the same elevated reactor pressure (P) and at least 30% of the equilibrium amount of urea obtainable under the condensation conditions is furthermore formed, in which a liquid mixture containing urea, water and ammonium carbamate (M5) is formed, which mixture is fed to the bottom of the existing reactor (R), and a gaseous mixture (G2), and (iii) a scrubber (SCR) is added, in which the gaseous mixture (G2) is brought into contact with the aqueous ammoniacal ammonium carbamate solution (M3), in which a liquid (M6) mixture is obtained, which is fed to the condenser (C), and a scrubbed gaseous mixture (G3).
Patent CA-2233208-C (CA)
Title: Carbon electrode materials for electrochemical cells and method of making same
Inventor: ZHANG JINSHAN
IPC: H01G11/46
Filed: 1996-09-20
Granted: 2002-02-05
Abstract: A method for preparing an amorphous carbon material for use as an electrode, such as the anode of an electrochemical cell. The amorphous carbon is fabricated in a one heating step process from multi-functional organic monomers. Electrodes so fabricated may be incorporated into electrochemical cells (10) as the anode (20) thereof.
Patent CA-2233503-C (CA)
Title: Molding method and apparatus and part produced thereby
Inventor: VOGHT H RICHARD
IPC: B29C33/00
Filed: 1997-07-25
Granted: 2005-04-12
Abstract: A molding apparatus for encapsulating a glass sheet (S) includes a stationary mold base (25), a moveable side mold core (30) and a moveable top mold core (35) rotatable into and out of a facing relationship with the stationary mold base (25). The side and top mold cores (30, 35) are rotatable via toggle mechanisms (31, 36) by means of fluid cylinders (32, 37). When the side and top moveable cores (30, 35) are in the closed position, these cores cooperate with the stationary mold base (25) to define a mold cavity. The glass sheets (S) are secured to the stationary mold base by way of vacuum heads (27). Stops (26) help to position the glass sheets (S) on the stationary mold base (25). The apparatus is usable in a method of encapsulating a glass sheet.
Patent CA-2236195-C (CA)
Inventor: WATANABE KENSHIU
IPC: G06T17/00
Filed: 1998-04-28
Granted: 2002-03-05
Abstract: An object search method and an object search system which reduce the time needed for coordinate transformation of a plurality of objects to be displayed as three-dimensional view data through viewing transformation. The system determines a reference box which circumscribes a view volume, created according to an eyepoint. The system determines a bounding box for each object. Each bounding box circumscribes the corresponding object. A 6-d tree, composed of a plurality of nodes each having keys composed of the coordinate components of each bounding box, is prepared beforehand. With the coordinate components of the reference box as a search condition, the system searches the 6-d tree for bounding boxes included in the reference box.      Then, the system performs coordinate transformation only on the objects corresponding to the obtained bounding boxes.
Patent CA-2238427-C (CA)
Inventor: KATO MASAYASU
IPC: C07D271/02
Filed: 1998-05-25
Granted: 2008-12-23
Abstract: The present invention is to provide an industrially useful production method of an aminobenzene compound represented by the formula: (see formula I) which is characterized by reacting a mixture of a mono-halogeno compound represented by the formula: (see formula II) and di-halogeno compound represented by the formula: (see formula III) with a compound of the formula: (see formula IV)
Patent CA-2241194-C (CA)
Inventor: JOHNSON ASHLEY
IPC: E21B47/10
Filed: 1997-01-24
Granted: 2007-01-09
Abstract: Il est préférable, lors de l'exécution d'un forage pour puits de pétrole, de savoir à quel moment un fluide passe le long des parois du trou de forage, entre le trou proprement dit et la formation géologique traversée. Il est maintenant établi que l'on peut retirer de l'observation de la pression régnant au sein du trou de forage, dans la zone de travail du trépan, de précieuses informations concernant les flux de fluide entrants ou sortants, cette observation étant menée, non point lors du fonctionnement du trépan, mais lors de son immobilisation, la colonne de tubes sur laquelle il est monté se trouvant également immobilisée et le fluide de forage n'étant plus pompé. Le fait que le fluide de forage soit thixotrope a servi de point de départ à cette invention. Lorsque rien ne vient le perturber, ce fluide passe à l'état de gel et il est alors susceptible de transmettre, de façon tout à fait précise, les forces engendrées par des fluides en mouvement à la jonction du trou de forage et de la formation géologique - c'est-à-dire les fluides entrants ou sortants - lorsque le fluide de forage se déplace le long du trou de forage, et ce, avec une efficacité de loin supérieure à celle à laquelle on était jusqu'alors habitué. C'est là le propos de cette invention que de présenter un procédé, ainsi que l'appareillage correspondant, permettant de déterminer les flux de fluide entrants ou sortants durant un forage en faisant intervenir un fluide de forage gélifiant dont les caractéristiques - limite élastique  tau y et temps de gélification tg - sont connues et ensuite, dès lors que le forage et le pompage ont cessé, en mesurant la pression différentielle  DELTA P, les modifications relevées servant à déterminer le flux du fluide.
Patent CA-2243400-C (CA)
Title: Rare earth borate and its precursor, preparation processes and use of borate as luminophore
Inventor: HUGUENIN DENIS
IPC: C01B21/064
Filed: 1997-01-17
Granted: 2004-12-14
Abstract: The present invention relates to a rare earth borate, a precursor thereof, their preparation processes and the use of such borate as luminophore. The rare earth borate and its precursor are characterized in that they are provided in the form of cubic, parallelepipedic or spherical particles and in that they have a dispersion index of at least 0.8. According to one embodiment of the invention, the borate is a red luminophore. The process of preparing the precursor is characterized in that a rare earth hydroxycarbonate or carbonate is reacted with boric acid, the reaction medium being an aqueous solution. The borate is obtained by calcining the precursor.
Patent CA-2245403-C (CA)
Title: Wdm optical network with passive pass-through at each node
Inventor: LIU KEXING
IPC: H04B10/572
Filed: 1998-08-20
Granted: 2003-01-28
Abstract: A communications network has a plurality of nodes interconnected by an optical transmission medium. The transmission medium is capable of a carrying a plurality of wavelengths organized into bands. A filter at each node for drops a band associated therewith and passively forwards other bands through the transmission medium. A device is provided at each node for adding a band to the transmission medium. Communication can be established directly between a pair of nodes in the network sharing a common band without the active intervention of any intervening node. This allows the network to be protocol independent. Also, the low losses incurred by the passive filters permit relatively long path lengths without optical amplification.
Patent CA-2245497-C (CA)
Title: Peptide immunogens for vaccination against and treatment of allergy
Inventor: STADLER BEDA
IPC: C07K16/00
Filed: 1997-02-28
Granted: 2009-02-24
Abstract: Immunogenic molecules comprising (a) at least one moiety of a peptide mimicking the natural epitope on human IgE recognized by the monoclonal anti-human IgE antibody BSW17, and (b) a moiety capable of eliciting an immune response against that peptide. They are useful in, or for the preparation of, pharmaceutical compositions, particularly for the treatment of IgE-mediated diseases such as allergies and atopic dermatitis, e.g. vaccines against allergy.
Patent CA-2247541-C (CA)
Title: Radiotelephone
Inventor: JOHNSON TERENCE
IPC: H04M1/725
Filed: 1997-02-24
Granted: 2006-01-03
Abstract: An electronic radiotelephone comprising: a first housing; a second housing releasably attachable to the first housing to meet with the first housing around the periphery of the radiotelephone; and retaining mean s comprising a cover, for holding the electronic components of the radiotelephone to the first housing when the second housing is released from attachment with the first housing.
Patent CA-2256179-C (CA)
Title: Encryption and decryption devices for public-key cryptosystems and recording medium with their processing programs recorded thereon
Inventor: OKAMOTO TATSUAKI
IPC: G06F7/72
Filed: 1998-12-16
Granted: 2002-05-07
Abstract: In a public-key cryptosystem based on a multiplicative group, n=p2q, where p and q are odd primes, and g, selected from (Z/nZ)* such that gp=gr-1 mod p2 has an order of p in (Z/p2Z)*, are made public. A plaintext m, a random number and n are used to calculate m+rn, and n and g are used to compute C=g m+rn mod n to generate it as ciphertext. For the ciphertext C, C mod p2 is calculated, then C p=C p-1 mod p2 is calculated to obtain (C p-1)/p=L(C p), and L(C p) is multiplied by a secret key L(g p)-1 mod p to obtain the plaintext m.
Patent CA-2261239-C (CA)
Inventor: CHIU CIBER
IPC: A63B21/055
Filed: 1999-02-08
Granted: 2001-11-06
Abstract: A handle structure for a chest pull includes a substantially ring-shaped handle having a tapered passage defined radially therethrough. A positioning device including a sphere member is sized to be movably retained in the tapered passage. A shank extends from the sphere member and is connected to a collar member which has an aperture defined therethrough. A positioning member has a head movably retained in the collar member and a tail extending transversely from a mediate point of the head. The tail is positioned corresponding to the collar member so as to position a resilient member between the head and the collar member.
Patent CA-2268773-C (CA)
Title: Skin battery cosmetic composition
Inventor: GUBERNICK JOSEPH
IPC: A61N1/20
Filed: 1997-09-29
Granted: 2002-07-16
Abstract: The present invention relates to a method for preventing or treating skin damage which comprises applying to the skin a composition containing an effective amount of a cosmetically or pharmaceutically acceptable compound capable of acting as an electron donor, simultaneously or substantially simultaneously with the application of a composition containing an effective amount of a cosmetically or pharmaceutically acceptable compound capable of acting as an electron acceptor, whereby an exchange of electrons between the electron donor and electron acceptor results in generation of an electrical current on the skin.
Patent CA-2271049-C (CA)
Inventor: COBBEN JOHANNES IGNATIUS MARIE
IPC: B44F1/12
Filed: 1997-11-04
Granted: 2007-05-01
Abstract: L'invention se rapporte à un document à protéger contre les falsifications qui comprend un dispositif de sécurité sous la forme d'un motif perforé. Ce motif perforé, qui occupe une surface du document, représente une image faite de tons de luminosité. Le motif perforé est formé de telle manière que, lorsque l'on regarde à contre-jour le document traité avec ce procédé ou que l'on le place sur une table lumineuse, on peut distinguer une image à l'endroit du motif perforé. La création de cette image faite de tons de luminosité, nécessite des techniques très avancées. Ces techniques sont difficilement accessibles aux éventuels falsificateurs, ce qui rend les documents pourvus de ce motif perforé extrêmement difficiles à falsifier. Le motif perforé est, de préférence, réalisé au moyen d'une lumière laser.
Patent CA-2273072-C (CA)
Title: Temperature regulating catheter and methods
Inventor: GINSBURG ROBERT
IPC: A61F2/958
Filed: 1997-12-19
Granted: 2009-05-19
Abstract: The invention provides methods and apparatus for regulating the temperature of a liquid medium while the liquid medium is within a patient. According to one exemplary method, a catheter (20) is provided having a catheter body (22) with a proximal end (24) and a distal end (26). At least one lumen (28) extends between the proximal end (24) and a distal end (26) and an internal temperature altering region (14) is near the distal end. The catheter (20) is introduced into a body structure until the temperature altering region (14) is near a target area within the body structure. A liquid medium is introduced into the lumen so that the temperature of the liquid medium may be altered while passing through the temperature altering region (14).