baber/WOPTO huggingface dataset:
Patent CA-2126443-A1 (CA)
Title: A boost-converter with low losses
Inventor: KARLSSON BROR M
IPC: H02M3/155
Filed: 1993-10-20
Abstract: Abstract A boost-converter with low losses comprising a series connection of an energy storing main inductor (L1) and a main diode (D1) connected between a first input terminal (P) for a first voltage and a first output terminal (Q) for a second, higher dc-voltage. The centre point (R) between the components connected in series is, via a controllable switching element (M1), connected to a common second input and output terminal (S). A control circuit (10) for the switching element is provided to monitor the voltage of said first output terminal (Q) of the converter and to control the on and off operation of the switching element (M1). The converter further comprises an auxiliary inductor (L3),  connected  between  said  centre point  (R)  and  a terminal (T) on the switching element (M1), in order to limit the reverse current in the main diode when the switching element (M1) changes to conducting condition, and a series connection of a zener diode (D19) and two diodes (D2 and D3)  between said terminal  (T)  and the output terminal (Q) to transfer energy stored in the auxiliary inductor (L3) towards the output terminal (Q). Furthermore a capacitor (C18) for temporary storage of energy from the inductor (L3) is connected between said centre point (R) and the connecting point (N) between said two diodes (D2 and D3).
Patent CA-2128163-A1 (CA)
Title: Process for preparing aryl carbonates
Inventor: OOMS PIETER
IPC: C07C68/02
Filed: 1994-07-15
Abstract: A process for preparing aryl carbonates Abstract Carbonates with aromatic ester groups may be prepared by reacting aromatic monohydroxy compounds with phosgene or with chloroformates of aromatic monohydroxy compounds, wherein reaction takes place at a temperature in the range 50 to 350°C in the presence of aluminium oxides as heterogeneous catalysts.
Patent CA-2128766-A1 (CA)
Title: Spiral electrode with partly recessed
Inventor: GRANT EDWARD A
IPC: A61B5/0476
Filed: 1994-07-25
Abstract: There is disclosed herein a bipolar fetal monitoring electrode having a body, a spiral electrode terminating in a point for engaging the fetal scalp and a reference electrode insulated from the spiral electrode. Each electrode being connected to a separate insulated wire. The face end of the electrode from which the spiral electrode extends has a recessed spiral groove running under and following the spiral electrode. The spiral electrode exits the electrode body at right angles to the shoulder at the deepest end of the groove, this provides a positive stop when the electrode is applied to the fetal scalp. There is space under the spiral electrode at this point which prevents any jamming of fetal tissue or hair. The depth of the spiral groove decreases at a greater rate than the lead of the spiral, allowing the spiral electrode and groove bottom to come in close proximity with one another where the spiral electrode rises above the face end of the body. The controlled force applied to the scalp by the spiral electrode and groove, as the scalp slides between the two surfaces, reduces the tendency of the electrode to fall off during the monitoring procedure. The recessed portion of the spiral electrode forms part of the electrodes active surface area therefore minimizing the height of electrode required projecting above the body's face. Thus a reduced hazard is present to physician and mother during application or to the fetus if the spiral electrode is deformed.
Patent CA-2129398-A1 (CA)
Title: Metal insert and buffer retention plunger
Inventor: EDWARDS BRYAN T
IPC: G02B6/36
Filed: 1994-08-03
Abstract: ABSTRACT     A fiber optic termination for incorporating within a fiber optic connector is capable of mechanical assembly which can preclude the use of adhesives for termination assembly.  A metal plunger (32) compresses a bullet (24) having an aperture (25) therethrough into a constriction (19) causing the bullet to grip a fiber (8).  A metal insert (27) lines the interior of an alignment ferrule (1) and engages the actuating plunger (32) with an interference fit.  The interference fit retains the plunger over time and over a broad operating temperature range.  Grooves (28) of the metal insert create pockets of engagement between the insert (27) and the alignment ferrule (1) that resist axial displacement of the insert relative to the alignment ferrule.
Patent CA-2129858-A1 (CA)
Title: Electric system of an electric vehicle
Inventor: KINOSHITA SHIGENORI
IPC: B60L11/18
Filed: 1994-08-10
Abstract: ABSTRACT OF THE DISCLOSURE     An electric system of an electric vehicle including a main battery as a power supply, and a semiconductor power converter for driving a wheel driving motor.  Impact destroying switches (301 - 304) are inserted into connecting lines (201 and 203) which connect a main battery (1) to the semiconductor power converter (4), and into a connecting line (202) connecting main battery blocks (110) and (120).  Each impact destroying switch breaks its conduction by blasting an explosive in the switch in response to the impact due to a collision of the vehicle body.  In case of an emergency such as a collision, since the main battery is instantaneously disconnected from the connecting lines by the switches, the connecting lines become free from the voltage.  This makes it possible to prevent fire, and to cut off the vehicle body to save passengers.
Patent CA-2130555-A1 (CA)
Title: Telephone splitter element, particularly a terminal strip
Inventor: SALIGNY YVES
IPC: H04Q1/14
Filed: 1993-03-03
Abstract: This is a telephone distributor element including, on the one hand, a plurality of input connectors (14E) and output connectors (14S) set up in rows, and, on the other hand, at least one module (17) for filtering and/or for protection to be brought into play between these input connectors (14E) and output connectors (14S), with, associated with the output connectors (14S), channels (16) able to guide corresponding connection wires. According to the invention, the channels (16) associated with the output connectors (14S) of any one row (20) are grouped within a guide rack (21), which extends edgewise in alignment with this row (20), and the rows (20) of input connectors (14E) and output connectors (14S) thus aligned with guide racks (21) are each bordered by a corridor (22) by virtue of which a filtering and/or protection module (17) may spread out. Application, in particular, to terminal blocks. <IMAGE>
Patent CA-2132621-A1 (CA)
Title: Process for the selective hydrogenation and isomerization of hydrocarbons
Inventor: OLSON BRUCE A
IPC: C07C5/25
Filed: 1993-04-07
Abstract: A process for the selective hydrogenation and simultaneous isomerization of hydrocarbons in a feed stream containing a mixture of hydrocarbons of varying degrees of unsaturation and having 4 or more carbon atoms. The process comprises contacting the mixture with hydrogen gas under hydrogenating and isomerizing conditions in the presence of a suitable catalyst in a multistage packed bed catalytic reactor. The process comprises supplying the hydrogen gas in increasing molar ratio amounts relative to the remaining unreacted diolefin concentration in at least three points spaced apart along the flow direction of the feed stream through the reactor.
Patent CA-2134629-A1 (CA)
Title: Paper coating composition with increased thickener efficiency
Inventor: KRUYTHOFF DIRK
IPC: C08L71/02
Filed: 1994-10-28
Abstract: ABSTRACT OF THE INVENTION                     PAPER COATING COMPOSITION WITH INCREASED THICKENER EFFICIENCY      A paper coating composition is provided having a clay-containing pigment system, a binder, a polysaccharide thickener, and at least 0.005% to 2%, based upon the weight of the polymer, of a blocking agent that serves to prevent more than 25% of the polysaccharide thickener from being adsorbed onto the clay pigment surface.  This coating is applied to raw paper for producing a high quality paper with smooth and substantially free of indentations surfaces for good ink to paper transfer.
Patent CA-2138759-A1 (CA)
Title: Method and product for particle mounting
Inventor: CAIRNCROSS ALLAN
IPC: G03F7/28
Filed: 1993-07-23
Abstract: The process and product are disclosed for mounting free-flowing particles, which employ a support having a support sur-face with an array of tacky areas which have a size and bonding strength suitable for adhesion of either one or two of said parti-cles. In the process the particles flow across the support surface to allow particles to contact the tacky areas and adhere thereto. An array of mounted particles may thus be provided which has at least 50 % singly or doubly mounted particles.
Patent CA-2138792-A1 (CA)
Title: A Percutaneously Placed Electrical Intestinal Pacemaker
Inventor: DOUGLAS DONALD D
IPC: A61M25/02
Filed: 1993-07-09
Abstract: A system (100) for delivering electrical impulses, comprising a current source (110) and a switch (120), of suitable magnitude and frequency to the inner lining of the gastrointestinal tract. The system (100) senses motor activity of the intestinal tract from electrodes (334 and 336). The system monitors pH of the gastrointestinal luminal contents by electrode (320) and receiver (130). The system (100) includes a delivery port (232) for administration of fluids or materials to the gastrointestinal tract, and/or for removing fluids or materials. The system comprises a pH recorder (430) and a pressure recorder (440) and a muscle activity recorder (450).
Patent CA-2138802-A1 (CA)
Title: Easy opening tab for container
Inventor: GARBISO MICHAEL J
IPC: B65D17/34
Filed: 1993-06-17
Abstract: A container opening tab (24) having a ring (26) at one end and an opposite free end is pivotally mounted between its ends on a container wall (14) having a pair of raised formations (32, 34), such as inclined ramp formations. The tab (24) is rotatable about a first axis (30) normal to the wall between a storage position in which the tab lies flat against the wall with the tab ring encircling one raised formation and the other raised formation disposed along one longitudinal side of the ring (26), and a container opening position in which the tab ring seats on the raised formation (32, 34) to space the ring from the wall, and the free tab end overlies an integral frangible seal (16) forming portion of the wall. While in its container opening position, the tab is rotatable about a second axis transverse to both the first axis and the longitudinal axis of the tab to press the tab free end against and thereby rupture the frangible seal (16).
Patent CA-2142992-A1 (CA)
Inventor: FITZMAURICE THOMAS
IPC: A61M29/02
Filed: 1993-08-24
Abstract: A balloon dilatation catheter comprising an elongated tubular shaft and an inner tube defining inflation and guide wire lu-mens. A dilatation balloon is mounted on the distal end of the tubular shaft and communicates with the inflation lumen. The guide wire lumen extends through the balloon. A stiffening wire is positioned within the tubular shaft and has a proximal end se-cured in the proximal portion of the catheter. The distal end of the stiffening wire is anchored within the inner tube in an area adjacent the guide wire entrance port. The stiffening wire maximizes strength to the proximal portion of the catheter while main-taining flexibility in the distal end of the catheter as well as the balloon.
Patent CA-2146807-A1 (CA)
Title: Dibutyltin bis (dihydroxybenzoates) and compositions containing these compounds
Inventor: GIELEN MARCEL
IPC: C07F7/22
Filed: 1995-04-11
Abstract: A B S T R A C T This invention provides novel Sn compounds, i.e. di-n.butyltindi-hydroxybenzoates, which exhibit excellent activities against varies tu-mors.  This invention also provides pharmaceutical compositions which contain said novel Sn compounds in combination with a suitable carrier, in particular aqueous solutions which are suitable for injection.
Patent CA-2146846-A1 (CA)
Title: Lamp base
Inventor: ZHU HUILING
IPC: H01J5/56
Filed: 1995-04-11
Abstract: A base for a position-dependent lamp comprises an inner shell, an outer shell, an aperture in said outer shell, and a hollow pin projecting from said aperture, said pin having a substantially tubular body with a pair of oppositely disposed wings extending from an end thereof, said wings having a length about two and one half to three times the height of said body and being sandwiched between said inner shell and said outer shell. The extended wings add stability to the pin and eliminate the use of lead-based solder in the lamp manufacture.
Patent CA-2151188-A1 (CA)
Inventor: BREANT PATRICE
IPC: C08K5/5425
Filed: 1995-06-07
Abstract: La présente invention concerne des polyamides thermoplastiques et des élastomères thermoplastiques à base de polyamide à performances thermomécaniques améliorées. Ils sont obtenus par greffage le long de la chaîne polymère avec des alcoxysilanes présentant au moins une insaturation, et notamment les vinyltrialcoxysilanes de formule CH2-CH-Si-(OR)3 où R représente un groupement alkyle éventuellement substitué par un groupement alcoxyle. Le rapport pondéral des greffons au polymère greffé est en général compris entre 0,1 et 5%. Ces polyamides greffés peuvent être réticulés par hydrolyse à la vapeur d'eau à 100.degree.C ou par contact avec de l'eau. Les polyamides greffés et éventuellement réticulés peuvent être utilisés pour la réalisation d'objets moulés, extrudés tels que des tubes, gaines films mono- et multicouches, pièces complexes, et de poudre pour le revêtement de substrats.
Patent CA-2155396-A1 (CA)
Inventor: SHAH CHANDRAKANT S
IPC: B29C49/06
Filed: 1995-08-03
Abstract: A process for injection molding of thermoplastic materials which includes a nozzle body having a bore to provide a flow path for molten thermoplastic. One end of the nozzle body is adapted for connection with a sprue of an associated mold body, and the other is adapted for connection with an end of an associated injection molding machine. The nozzle body has a shut-off valve fluid pin housing adapted for reciprocating movement in the nozzle bore to control the flow of plastic through the nozzle body. The shut-off valve fluid pin housing also includes a body having a fluid pin with a tip portion and the other end of the fluid passage communicating with a source of two pressurized fluids, one in vapour and liquid phase and another in gas. The shut-off valve is actuated to allow thermoplastic material to flow and subsequently a first pressurized fluid vapour is allowed to flow to form a hollow cavity in the thermoplastic material and then terminated and a second fluid which is a gas is allowed to flow into the cavity or it may be followed by the liquid of the first fluid vapour. After the thermoplastic material has set, the pressurized fluid is vented through the fluid pin housing passage into a fluid condenser for recovery of the vapour and liquid and then into atmosphere.
Patent CA-2157470-A1 (CA)
Title: Mannose or xylose based positive selection
Inventor: BOJSEN KIRSTEN
IPC: C12N9/90
Filed: 1994-02-28
Abstract: The present invention provides a method for identifying or selecting from a population of eukaryotic cells cultivated on or in a medium containing at least one compound, cells which have a metabolic advantage as a result of having being transformed, wherein: (i) the cells are transformed with a nucleotide sequence or a co-introduced nucleotide sequence one of which comprises a region which: (a) encodes a protein which is involved in the metabolism of the compound, and/or (b) regulates the activity of the protein; and (ii) the compound is mannose or xylose or a derivative or a precursor of these, or a substrate of the protein, or is capable of being metabolized by the transformed cells into such a substrate, with the proviso that the compound is not mannos when the proteine is mannose 6 phosphate isomerase. The invention also includes a method according to the preceding paragraph wherein the compounds are are not so limited with the proviso that an agent which reduces the toxicity to the cells of the compound is added to the medium. It is preferred that where a toxicity-reducing agent has been added to the culture medium, the compound is mannose and the nucleotide or co-introduced nucleotide sequence encodes mannose-6-phosphate isomerase.
Patent CA-2159809-A1 (CA)
Title: Reduced calorie potato chips obtained by frying raw potato slices in a reduced calorie fat composition and removing a portion of said fat composition from the chips
Inventor: CONTI-STOLZ CHARISSA ANN
IPC: A23L19/18
Filed: 1994-03-31
Abstract: A process for preparing conventional potato chips which contain a reduced calorie fat composition, but which do not impart an undesirable sensation of greasiness or waxiness and which have desirable lubriciousness is disclosed. Raw potato slices are immersed in a reduced calorie fat composition and fried to a moisture content of from about 2 % to about 20 %. The reduced calorie fat composition has a Waxy/Greasy Thixotropic Area Value ranging from about 25 kPa/s to about 150 kPa/s and comprises from about 70 % to 100 % of a nondigestible fat component and from 0 % to about 30 % of a triglyceride fat or oil component. After the potato slices are fried to the desired moisture content, an amount of the reduced calorie fat composition is removed such that the fat content of the finished potato chip ranges from about 23 % to about 32 %. Potato chips prepared according to the process of the invention are also disclosed.
Patent CA-2162647-A1 (CA)
Title: Roll Cover for Flat Work Ironer
Inventor: HEJHAL THOMAS J
IPC: D06F65/10
Filed: 1995-11-10
Abstract: An improved roll cover for use on a flat work ironer is provided, having an improved resin coating. The roll cover is a sheet of thermally resistant fabric which is coated or impregnated with a mixture of an acrylic resin and a stiffening agent. The improved roll cover can be dyed to a particular desired color and will retain its color over extended use.
Patent CA-2163621-A1 (CA)
Title: Chromium-free conversion coating treatment of aluminum
Inventor: KARMASCHEK UWE
IPC: C23C22/78
Filed: 1994-05-17
Abstract: The invention concerns a method of pretreating aluminum or aluminum alloy surfaces before application of a permanent corrosion-protective conversion coating treatment, in particular before phosphating in acidic phosphating baths containing zinc, a chromating treatment, or a chromate free treatment. The method is characterized in that the surfaces are brought into contact with acidic aqueous treatment solutions containing complex fluorides of the elements boron, silicon, titanium, zirconium, or hafnium, alone or in mixtures with each other, at total concentrations between 100 and 4000 mg/L and at a pH between 0.3 and 3.5. Following the pretreatment, the aluminum or aluminum alloy parts may, after shaping if necessary, be joined by adhesive bonding and/or welding to each other or to parts made of steel, zinc plated and/or zinc alloy plated steel, and/or aluminum or aluminum alloy plated steel.
Patent CA-2167790-A1 (CA)
Title: Relational database system and method with high data availability during table data restructuring
Inventor: MAIER DONALD S
IPC: G06F17/30
Filed: 1996-01-22
Abstract: A database computer system includes memory, residing in a plurality of interconnected computer nodes, for storing database tables.  Each database table has a plurality of columns, a primary key index based on a specified subset of the columns, and an associated table schema.  At least a subset of the database tables are partitioned into a plurality of partitions, each partition storing records having primary key values in a primary key range distinct from the other partitions.  A transaction manager generates and stores an audit trail, each audit entry denoting a database table record event, such as an addition, deletion or alteration of a specified database table record in a specified one of said database tables.  Four online data definition procedures allow the structure of a database table to be altered while the database table remains available to execution of transactions, with minimal impact of the availability of the database table for transaction execution. The four online data definition procedures are a move partition procedure, a split partition procedure, a move partition boundary procedure, and a create new index procedure.  Each of these online procedures has three or four phases of execution.  In a first phase, records of a table partition or the entire table are accessed using read only access, so as to generate a new partition, move records between two partitions, or to create a new index.  In a second phase, audit trail entries are used to clean up the data structures created during the first phase.  In a third phase, access to the database table is briefly locked while audit trail entries created after thesecond phase are used to make final changes to the data structures created during the first phase, and while the database table schema is updated to reflect the changes to the database table produced.
Patent CA-2167833-A1 (CA)
Title: Method of preparing enantiomerically-pure 3-methyl-5-(1-alkyl-2(s)-pyrrolidinyl)isoxazoles
Inventor: LIN NAN-HORNG
IPC: C07D413/04
Filed: 1994-08-30
Abstract: A novel process for preparing enantiomerically -pure 3-methyl-5-(1-(C1-C3-alkyl)-2-pyrrolidyl)isoxazole in high yield, wherein a protected pyrrolidine or 2-oxo-pyrrolidine starting material is reacted with a suitable organic anion and a resulting beta-keto oxime intermediate is cyclized and dehydrated, as well as intermediates useful in the preparation thereof.
Patent CA-2169675-A1 (CA)
Inventor: AUSTIN ANNE-MARIE B
IPC: C09K23/00
Filed: 1996-02-16
Abstract: Water soluble polymers are prepared from an allyloxybenzenesulfonic acid monomer a methallyl sulfonic acid monomer a copolymerizable nonionic monomer and a copolymerizable olefinically unsaturated carboxylic acid monomer. The polymers are used to disperse particulate matter and to inhibit the formation and deposition of mineral scale in aqueous systems and are used in detergent compositions.
Patent CA-2169693-A1 (CA)
Title: Wireless coupled adapter for decoding information from a broadcast signal to which a radio is tuned
Inventor: ZUCKER LEO
IPC: H04B1/38
Filed: 1996-02-16
Abstract: A wireless adapter for decoding information from a broadcast signal to which a radio is tuned.  The radio emits a local signal that serves to identify the broadcast signal, and a coupling part in the vicinity of the radio responds to the local signal.  The coupling part produces a tuning signal in response to the local signal, and the tuning signal is applied to an adapter receiver circuit so that the receiver circuit acquires the broadcast signal to which the radio is tuned.  A decoder circuit then decodes information contained in the acquired broadcast signal.  In one embodiment, the adapter can be mounted in a vehicle near the vehicle radio.  When the radio is tuned to a station that encodes, e.g., RBDS radio text on a sub-carrier of its broadcast signal, the adapter will acquire the station's sub-carrier, and will display the text conveniently and safely.
Patent CA-2170395-A1 (CA)
Title: Glycosyl amides of 2-aminoacylamino-2-deoxy sugars
Inventor: LOCKHOFF OSWALD
IPC: A61P37/00
Filed: 1994-08-17
Abstract: The present invention relates to (2-aminoacylamino-2-deoxy-glycosyl)amides, which are substituted on the nitrogen atom of the amino acid, of the general formula (I)                          (I) in which the substituents have the meaning given in the description, to processes for their preparation and to their use in medicaments.
Patent CA-2177681-A1 (CA)
Inventor: PANANDIKER RAJAN KESHAV
IPC: C11D3/37
Filed: 1994-12-12
Abstract: Liquid laundry detergents containing an improved biodegradable clay soil removal/anti-deposition agent which is mixture of a polyamino acid (or a salt thereof) and polyalkylene glycol.