baber/WOPTO huggingface dataset:
Patent CA-2143113-C (CA)
Title: Process for the production of pure vinyl pyrrolidone
Inventor: COHEN JEFFREY M
IPC: C07D207/267
Filed: 1994-01-21
Granted: 2004-08-10
Abstract: This invention relates to a process for the purification of a crude liquid N-vinylpyrrolidone product which comprises (I) product rectification by (a) subjecting said crude product containing at least 0.3 weight % of impurities to a temperature of between about 1° and 5° below the freezing point of said crude liquid to form a vinyl pyrrolidone crystalline phase and a liquid residue phase in a first crystallization step; (b) separating said liquid phase from said crystalline phase; (c) allowing said separated crystalline phase to warm gradually so as to liquify said crystals and (d) subjecting the liquified crystals of vinyl pyrrolidone to between 1 and 3 additional crystallization steps, each carried out by gradually cooling the liquified vinyl pyrrolidone to a temperature above that of the preceding crystallization step up to a temperature of 14.4 °C so as to form additional vinyl pyrrolidone crystalline and liquid residue phases with separation of vinyl pyrrolidone crystals and liquid residue phases and liquification of vinyl pyrrolidone crystals between each additional recrystallization step, recovery of N-vinyl-pyrrolidone product from the final crystallization step and (II) collecting said separated liquid residues from each crystallization step and subjecting them, sequentially, individually or collectively, to fractional crystallization in order to recover additional amounts of purified vinyl pyrrolidone product. The present process is capable of achieving up to 99.999 % purity of vinyl pyrrolidone in about 98 % recovery.
Patent CA-2145601-C (CA)
Inventor: MELLUL MYRIAM
IPC: A61K8/87
Filed: 1995-03-27
Granted: 1999-06-29
Abstract: La présente invention a trait à une composition cosmétique à appliquer sur l'ongle comprenant à titre d'agent filmogène une dispersion aqueuse de particules de polyuréthanne et de polymères radicalaires à groupement carboxylique.
Patent CA-2146140-C (CA)
Inventor: SCHRAUWEN GERARDUS PETRUS ANTO
IPC: E05B73/00
Filed: 1993-10-19
Granted: 2000-01-11
Abstract: L'invention se rapporte à un système antivol qui comprend, d'une part, une pièce de verrouillage (2) pourvue d'un logement qui comporte un mécanisme de verrouillage (3-6), ainsi qu'une pièce antagoniste (1) qui peut être raccordée à la pièce de verrouillage (2), et, d'autre part, un élément de libération magnétique (21) qui peut être placé sur le logement pour libérer la pièce de verrouillage de la pièce antagoniste. Pour conférer au système une plus grande sécurité, le logement de la pièce de verrouillage (2) comporte une clef (18, 19) et l'élément de libération (21) comporte une clef antagoniste (24, 25), la clef (18, 19) et la clef antagoniste (24, 25) s'adaptant l'une dans l'autre.
Patent CA-2146259-C (CA)
Inventor: SHIMADA KAORU
IPC: A61K31/435
Filed: 1993-09-30
Granted: 1998-04-07
Abstract: Composés utiles dans le traitement des troubles inflammatoires, des affections du système nerveux central et d'autres maladies, et sels pharmaceutiquement acceptables de ces derniers; ces composés sont représentés par la formule (I) où Ar1 et Ar2 sont, indépendamment l'un de l'autre, un aryle ou un aryle substitué; R1 est un alkyle de 1 à 6 atomes de carbone; R2 est un hydrogène ou un alkyle de 1 à 6 atomes de carbone; et X et Y sont pris séparément et correspondent, indépendamment l'un de l'autre, à un hydrogène, un dialkylphosphoryle de 2 à 12 atomes de carbone, un alkyle de 1 à 6 atomes de carbone, un alkényle de 2 à 6 atomes de carbone ou un alkynyle de 2 à 6 atomes de carbone; ou X et Y sont pris ensemble et correspondent à une chaîne hydrocarbonée de 3, 4 ou 5 atomes de carbone, contenant facultativement jusqu'à 2 doubles liaisons et portant facultativement 1 ou 2 substituants choisis parmi les groupes oxo, hydroxy et alkyle de 1 à 6 atomes de carbone; à la condition que lorsque X et Y sont pris ensemble, ils sont liés aux atomes de carbone adjacents; et à la condition que si X ou Y est un atome d'hydrogène, l'autre doit être un alkényle ou un alkynyle.
Patent CA-2147114-C (CA)
Inventor: KENNEDY THOMAS A
IPC: A01K97/22
Filed: 1995-04-13
Granted: 2000-06-27
Abstract: The present invention is a combination cooler-seat-gear and food storage and transporting device.  It includes a main housing having a closed bottom, sidewalls, a top and a front.  The housing has inner walls and outer walls and has heat insulation therebetween.  It includes an open front with at least one hinged door thereon, and it contains a plurality of horizontal drawer supports with a plurality of drawers slidably located within the housing. There is a seat located on the top of the housing, as well as handles for manually carrying same.  The handles may be built in or may be adjustable straps.  In one preferred embodiment, the housing further includes an external shelf which is movable relative to the housing so as to have a first position which is a rest position, and to have a second position which is an open position.
Patent CA-2150349-C (CA)
Inventor: HART STEPHEN J
IPC: G02B5/32
Filed: 1993-11-26
Granted: 2000-05-09
Abstract: A method and apparatus (300) for making holograms includes a technique for exposing a film substrate (319) or other light sensitive medium to consecutive two-dimensional images, together representative of a three-dimensional system, to generate a three-dimensional hologram of the physical system. Low beam ratios are employed to superimpose multiple (20-300) images on the substrate (319). Each image is relatively weak, but the combination of the series of weak images ultimately appears as a single clearly defined hologram.
Patent CA-2152971-C (CA)
Title: Collapsible keyboard structure for a notebook computer
Inventor: SELLERS CHARLES A
IPC: G06F3/02
Filed: 1995-06-29
Granted: 1998-12-29
Abstract: A notebook computer is provided with a collapsible keyboard structure in which, in response to closing of the  computer  housing  lid,  the  key return  spring portions of the keyboard are shifted away from their normal underlying relationships with the keys and the keys are forcibly retracted to a storage/transport orientation in which the overall thickness of the keyboard structure is reduced by an amount essentially equal to the stroke distance of the keys.  When the lid is subsequently opened, the key return spring portions are   shifted  back  to   their  normal   underlying relationships with the keys, and the keys are forced outwardly  by the  return  spring portions  to their extended,  operative  orientations  above  the  return spring portions.
Patent CA-2154445-C (CA)
Title: Lysosomal targeting of immunogens
Inventor: AUGUST J THOMAS
IPC: C07K7/06
Filed: 1994-01-21
Granted: 2007-06-26
Abstract: The inventors have discovered a targeting signal that will direct proteins to the endosomal/lysosomal compartment, and they have demonstrated that chimeric proteins containing a luminal antigenic domain and a cytoplasmic endosomal/lysosomal targeting signal will effectively target antigens to that compartment, where the antigenic domain is processed and peptides from it are presented on the cell surface in association with major histocompatibility (MHC) class II molecules.  Chimeric DNA encoding the antigen of interst, linked to an endosomal/lysosomal targeting sequence, inserted in an immunization vector, can introduce the chimeric genes into cells, where the recombinant antigens are expressed and targeted to the endosomal/lysosomal compartment. As a result, the antigens associate more efficiently with MHC class II molecules, providing enhanced in vivo stimulation of CD4+ T cells specific for the the recombinant antigen.  Delivering antigens to an endosomal/lysosomal compartment by means of chimeric constructs containing such lysosomal targeting signals will be of value in any vaccination or immunization strategy that seeks to stimulate CD4+ MHC class II restricted immune responses.
Patent CA-2154616-C (CA)
Inventor: SUTO SHOHEI
IPC: A63H17/36
Filed: 1995-07-25
Granted: 2003-04-01
Abstract: A radio-controlled vehicle toy is disclosed which includes a body, a caster axle mounted on a front end of the body and tilted backward from vertical, a front fork rotatable on the caster axle and rotatably supporting a front vehicle wheel, a rear-wheel drive coupled with a rear vehicle wheel, a radio-control receiver and a power source mounted to the body, and a pair of auxiliary wheels mounted on opposite sides of the vehicle body frame so as to be brought into contact with an underlying surface when the vehicle body frame leans laterally. A steering unit is mounted in a front-end portion of the body and includes a steering mechanism to rotate the front fork based on a control signal issued from the receiver and a resilient coupling which resiliently applies control torque to the front fork. The rear-wheel drive includes a motor which receives an electric current from the power source a speed reduction unit between the motor and the rear wheel, and a switch coupled across the motor, the switch being operable according to a signal initiated by the vehicle receiver to close and short the motor, which exerts a drag to effectively brake the vehicle toy.
Patent CA-2155358-C (CA)
Title: Injection mould and method for injection moulding an article
Inventor: DEN UYL HENDRIK
IPC: B29C45/38
Filed: 1994-02-02
Granted: 1999-01-05
Abstract: Injection mould comprising at least two mould sections (2, 3) between which a mould cavity is delimited. One (3) of the mould sections is provided with ejector means (42) for removing the product after injection moulding.  The other mould section (2) is provided with a gate (5). To enable the solidified sprue to be separated from the moulded article, a bush (8) is also present in which the gate (6) likewise extends. Said bush (8) is constructed to be movable to a limited extend relative to the mould section (2) in which the other part (5) of the gate is made. As a result the sprue can be pulled away from the article in a guaranteed manner. The movement of the bush (8) is controlled by jack means (16, 17). Consequently, controlled breaking of the sprue is possible and the advantage arises that, by releasing the pressure on the jack means (16, 17), no force has to be overcome when the mould is closed.
Patent CA-2156917-C (CA)
Inventor: MALONE THOMAS W
IPC: A23L25/00
Filed: 1994-02-25
Granted: 2003-04-22
Abstract: A computerized handbook of processes includes a memory in which representations of a plurality of processes are stored. A representation for a process includes indications of processes into which the process is decomposed. At least one of die plurality of processes is a specialization of another one of the plurality of processes, and the representation of the specialization is such that the specialization inherits characteristics from the other process. The handbook also includes a display system including a display, Specializations of a process are accessed from the memory and displayed on the display. A decomposition of a process is also accessed and displayed on the display. The accessing and displaying of decompositions and specializations are provided upon user selection.
Patent CA-2162822-C (CA)
Title: Novel leavening acid composition
Inventor: CHUNG FRANK HSIN YAU
IPC: A21D10/00
Filed: 1995-11-14
Granted: 2005-10-18
Abstract: A composition of matter comprising a monocalcium phosphate leavening acid having a neutralizing value of between about 44 and about 63 wherein the neutralizing value is the amount by weight of sodium bicarbonate needed to neutralize 100 parts by weight of said monocalcium phosphate leavening acid.
Patent CA-2165056-C (CA)
Inventor: COTHRAN PHILIP EARL
IPC: A61K8/89
Filed: 1994-06-17
Granted: 1999-09-21
Abstract: Compositions pour shampoings anti-pelliculaires à fort pouvoir moussant qui présentent un dépôt amélioré d'agent actif anti-pelliculaire particulaire. Lesdites compositions comprennent (a) d'environ 5 % à environ 29.5 % en poids de tensioactif anionique choisi dans le groupe constitué de sulfates d'alkyle, de sulfates éthoxylés d'alkyle, d'acides desdits sulfates et de mélanges desdites substances, (b) d'environ 0,5 % à environ 5 % en poids de tensioactif anionique sous forme d'acide N-acylamino et de sels dudit acide, (c) d'environ 0,1 % à environ 10 % en poids d'un agent anti-pelliculaire particulaire, (d) d'environ 0,5 % à environ 10 % en poids d'un agent de suspension cristallin pour ledit agent actif anti-pelliculaire, (e) d'environ 40 % à environ 89 % en poids d'eau, la concentration totale de tensioactifs détergents dans ladite composition étant d'environ 10 % à environ 30 %, le rapport pondéral du constituant (b) par rapport au constituant (a) étant d'au moins 1/20 et ladite composition étant pratiquement exempte de tensioactifs sous forme de bétaïne et de renforçateurs de mousse sous forme d'alcanolamides.
Patent CA-2171107-C (CA)
Inventor: HARRIS WILLIAM A
IPC: H02P6/08
Filed: 1994-09-16
Granted: 2003-08-19
Abstract: A pulse width modulation controller for a variable speed variable torque electric motor. Inputs to the controller are a desired RPM signal, a motor electrical signal which is a function of the RPM of the rotor of the motor and its angular position relative to the stator, and a torque feed back signal derived from the power phase winding circuits of the motor. The controller produces pulse width modulated power drive signals which are applied to power switches of the power phase winding circuits of the motor to allow electric current to flow through the power phase winding circuits when power phase enables signals produced by the controller sequentially enabling the power switch of a power phase winding circuit to do so. The duty cycle of the power drive signals is a function of the difference between the desired and actual RPM of the motor and the torque of the motor. The frequency of the power drive signals is a fixed integral multiple of the frequency of the power phase enable signals over the full operating range of RPMs of the motor.
Patent CA-2181808-C (CA)
Title: Laser
Inventor: WYATT RICHARD
IPC: H01S3/067
Filed: 1995-01-27
Granted: 2000-10-17
Abstract: A high power monomode laser arrangement is able to manipulate the output from a high power laser diode array pump source (3) using a computer-generated hologram (4) to launch a high proportion of the pump source light into a multimode fibre portion including input reflector (6). A monomode fibre portion (2) with the same fundamental-mode size as the multimode fibre portion (1) is optically coupled to the multimode fibre portion and includes a reflector (5) which reflects only the fundamental mode of the multimode and monomode fibre portions. The fundamental mode reflection forced by the monomode fibre portion (2) provides the feedback necessary to force predominantly fundamental mode oscillation which enables stimulated emission in only the fundamental mode.
Patent CA-2182384-C (CA)
Inventor: SPIRIT DAVID MICHAEL
IPC: H04B10/071
Filed: 1995-02-01
Granted: 2000-06-27
Abstract: A waveguide (3) carrying system signals at a first wavelength (.lambda. system) and OTDR signals at a second wavelength (.lambda. OTDR) is provided with optical amplifier means (5, 6) constituted by an optical amplifier (5) and an isolator (6). The isolator (6) has a high isolation factor at the first wavelength (.lambda. system) and a low isolation factor at the second wavelength (.lambda. OTDR).
Patent CA-2183772-C (CA)
Title: Biodegradable multi-component polymeric materials based on unmodified starch-like polysaccharides
Inventor: KRISHNAN MOHAN
IPC: C08L101/16
Filed: 1995-03-06
Granted: 2000-08-29
Abstract: Compatibilized blends of a biodegradable hydrophobic polyester, unmodified starch or other similar polysaccharide containing less than 1 % water by weight, other biodegradable polymers that may be hydrophobic, plasticizer, and other additives. The blends are produced in the absence of water. The preferred polyester polymer is poly( and the preferred starch is from corn. A small amount of a unique stretching agent is incorporated to provide high elongations at break, especially in film-forming compositions containing a significant amount of starch. The starch is a discontinuous phase that may be completely or partially plasticized and the polyester polymer is the continuous phase. The preferred polymers have unique film-forming properties and are resistant to water and moisture.
Patent CA-2185522-C (CA)
Inventor: MUENZ DAVID J
IPC: A23G9/04
Filed: 1994-11-22
Granted: 1998-06-09
Abstract: A congealed fruit confection with a high fruit intensity comprising a mixture of a fruit concentrate, natural sweeteners, a softening agent, a humectant, water and pectin of over 1.0% by weight of the mixture where the mixture is congealed in molding material to reduce the water of the mixture to provide a water activity of substantially less than about 0.40.
Patent CA-2185735-C (CA)
Inventor: RAURA PENTTI
IPC: B07B4/08
Filed: 1996-09-17
Granted: 2005-11-15
Abstract: Procedure for separating heavy particles of material from lighter particles, e.g. for separating impurities from powdery or fragmental material, such as fibres or chips, in which procedure the material to be treated is supplied onto a carrier surface pervious to gas and gas impacts are applied to the material through the carrier surface, causing the heavier particles to move closer to the carrier surface. The carrier surface is mainly moved in one direction of movement to move the heavy particles and the lighter particles are passed, mainly by the agency of the inclination of the carrier surface and/or the gas flow, in a direction substantially differing from the principal direction of movement of the carrier surface. The invention also relates to an apparatus implementing the procedure.
Patent CA-2195488-C (CA)
Title: Personal mobile communications system with two points of entry
Inventor: FOLADARE MARK JEFFREY
IPC: H04W76/02
Filed: 1997-01-20
Granted: 2000-11-28
Abstract: In a personal reach telephone service in which a calling party's telephone call to a personal reach telephone number of a called party is bridged to a return call placed by the called party in response to a page, a connection is established between bridging and signaling equipment associated with the interexchange network, to which the calling party's call is directed, and the home PBX associated with the called party. The called party, in responding to the page, and if local to the PBX, calls into his home PBX where this return call and the calling party's call are bridged together.
Patent CA-2197143-C (CA)
Title: Printed circuit board connector
Inventor: LONGUEVILLE JACQUES
IPC: H01R12/71
Filed: 1997-02-10
Granted: 2004-08-10
Abstract: A printed circuit board connector includes contact elements for electrically connecting contacts of at least two electrical printed circuit boards, and retaining devices retaining the contact elements in an intended position inside the printed circuit board connector. The contact elements and the retaining devices are constructed and/or disposed in such a way as to cause forces exerted upon the retaining devices by and/or through the contact elements to at least partly cancel one another out in the region of the retaining devices.
Patent CA-2199121-C (CA)
Title: Range-gated field disturbance sensor with range-sensitivity compensation
Inventor: MCEWAN THOMAS E
IPC: G01S13/50
Filed: 1995-08-29
Granted: 2006-05-09
Abstract: A field disturbance sensor operates with a relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter (11) that transmits a sequence of bursts (19) of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver (21) which receives electromagnetic energy at the transmitter frequency, and includes a mixer (22) which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. The burst repetition rate is randomly or pseudo-randomly modulated so that bursts in the sequence of bursts have a phase which varies.
Patent CA-2199171-C (CA)
Inventor: GUTIERREZ ANTONIO
IPC: C08F8/32
Filed: 1995-10-10
Granted: 2004-12-14
Abstract: An oil-soluble lubricating oil additive useful as a dispersant, comprising Mannich Base condensates of an alkyl (hydrocarbon or polymer) substituted hydroxy aromatic compound with an aldehyde and a heavy polyamine. A heavy polyamine is a mixture of polyalkylenepolyamines comprising small amounts of lower polyamine oligomers such as tetraethylene pentamine and pentahexamine but primarily oligomers with 7 or more nitrogens, 2 or more primary amines per molecule, and more extensive branching than conventional polyamine mixtures.
Patent CA-2202865-C (CA)
Title: Hole punch with slidable slipper and adjustable punches
Inventor: KANDASAMY BALAJI
IPC: B26F1/02
Filed: 1996-08-14
Granted: 2002-01-22
Abstract: A hand-operated punch (10) comprises three adjustable punch assembly units (21a, 21b, 21c) and a slipper (23) to receive punched out discs. Punch assembly units (21a, 21b, 21c) are adjustable from the bottom through an opening (29) in slipper (23), in which assembly units (21a, 21b, 21c) slide, but do not turn, during adjustment. Punch (10) also includes a strengthening flap configuration (17).
Patent CA-2203124-C (CA)
Title: Traitement des exceptions dans des instructions speculatives
Inventor: SILBERMAN GABRIEL MAURICIO
IPC: G06F9/38
Filed: 1996-01-09
Granted: 2002-11-19
Abstract: On minimise les opérations de servitude de l'unité centrale en détectant les exceptions spéculatives (202) en vue de leur traitement ultérieur lors de la résolution des exceptions (204) incluant l'indication des adresses de ces instructions spéculatives et leur résolution (204) par correction (206) de la cause de l'exception et réexécution (208) des instructions dont on sait qu'elles se trouvent dans un chemin emprunté. La détection des exceptions spéculatives comporte deux phases utilisant un bit d'exception qui est placé en réponse à un état d'exception (213). L'invention détecte une exception spéculative originale qui se produit lorsqu'une instruction spéculative dont le ou les opérandes n'ont aucun bit d'exception consigné rencontrent un état d'exception. La résolution des exceptions spéculatives (204) est lancée lorsqu'une instruction non spéculative qui se trouve dans le chemin emprunté d'un embranchement conditionnel utilise un opérande d'un registre dont le bit d'exception est consigné. La présence d'un état d'exception et d'une instruction non spéculative produit un signal d'exception (220) à résolution d'exception (204). La résolution des exceptions spéculatives (204) consiste à répondre aux signaux de sortie provenant du registre supplémentaire et du bit d'exception supplémentaire (204) pour corriger (204) l'état d'exception qui a causé de l'exception et réexécuter (208) les instructions dépendant des résultats des instructions ayant causé l'exception spéculative.
Patent CA-2204679-C (CA)
Inventor: KUMAR SANJAY
IPC: H04B17/00
Filed: 1997-05-07
Granted: 2002-01-22
Abstract: An integrated radio frequency transceiver comprising a diversity receiver and transmitter capable of performing a self test operation to determine if the receiver and transmitter paths are properly operational. The diversity receiver includes two receiver paths, a first path for receiving radio communications having a permitted bandpass, and a second receiver path for receiving radio signals from other radio port channels in use to assist in constructing its own neighbor list.