baber/WOPTO huggingface dataset:
Patent CA-2103497-C (CA)
IPC: H04B1/7156
Filed: 1993-11-19
Granted: 1999-03-09
Abstract: A method and apparatus is provided for synchronizing a received communication signal. A synchronization signal is derived from a received signal having a plurality of synchronization words. Each synchronization word has a predetermined number of synchronization symbols. The synchronization signal is filtered. The filtering is characterized by spacing each filter tap to correspond to synchronization word length increments. Synchronization information is generated which is based on a comparison of the filtered synchronization signal to a threshold. Finally, the synchronization information is output based on a confidence decision derived from the synchronization information.
Patent CA-2105615-C (CA)
Inventor: KONDO MASAHIRO
IPC: C09D11/16
Filed: 1993-09-07
Granted: 1996-07-09
Abstract: There is provided aqueous ink of high viscosity for writing instrument, capable of maintaining stable dispersed or dissolved state of the coloring material even after a prolonged period and exhibiting high fluidity under a shearing force applied by the writing operation in the ball point pen.       The ink contains, as essential components, a coloring material, succinoglycan which is an organic acid-modified heteropolysaccharide composed of glucose and galactose as component monosaccharides, and aqueous medium in which water constitutes at least 50 wt.%.
Patent CA-2107179-C (CA)
Inventor: BIANCALE VITO
IPC: B60J7/06
Filed: 1993-09-28
Granted: 2004-03-30
Abstract: An improved construction for intermediate bows used in movable tarpaulin systems for open-top truck bodies wherein the ends of the bows are provided with elongated sleeves of a uniform transverse cross-section comprising spaced parallel upper and lower sides joined by semi-circular ends to provide a somewhat elongated oval appearance in cross-section.
Patent CA-2115591-C (CA)
Title: Modular dispenser
Inventor: SHAW TERESA M
IPC: B67C11/02
Filed: 1994-02-14
Granted: 2003-09-23
Abstract: A modular household dispenser for fluent solids or liquids includes a rectangular casing for mounting on a wall or beneath a cupboard, and a hopper slidably mounted in the open front end of the casing. The hopper includes an inverted frusto-pyramidal bottom, the dispensing lower end of which is closed by a valve. Springs bias the valve to a closed position, whereby the valve automatically closes following a dispensing operation. During use, the hopper is slid outwardly to a dispensing position. A small container is located beneath the valve in the dispensing position for receiving any overflow. Upon completion of a dispensing operation, the hopper is slid inwardly to the storage or non- use position. The entire structure is relatively simple, compact and easy to install and use.
Patent CA-2120699-C (CA)
Inventor: DISANTO FRANK J
IPC: G02F1/167
Filed: 1991-10-07
Granted: 1998-05-05
Abstract: Anode electrode structure (12) for a display such as an electrophoretic display panel. An anode electrode structure (12) which is fabricated in accordance with the present invention includes a multipli city of anode line segments (2), (7), (13) and (18 wherein each anode line segment comprises at least a first and a second conducto r. An embodiment of the inventive anode electrode structure (12) enables a selective erase operation of a line (8) in a display wi thout partial erasure of adjacent lines (3), (14). (19).
Patent CA-2121406-C (CA)
Inventor: TAKAHASHI SETSUO
IPC: H04L12/42
Filed: 1994-04-15
Granted: 1998-02-17
Abstract: A looped bus system includes a plurality of nodes connected by unidirectional buses having opposite directions of signal transmission.  The head of bus function for one bus is located on a node different from that for the head of bus function for the other bus, the head of bus function is located on the same node as the termination of bus function for the other bus, and the head of bus function is located on the same node as the termination of bus function for one bus.  As a result, the buses can be reconfigured and nodes can be added freely by the use of an unused bus portion present in a part of the looped bus under normal condition.
Patent CA-2121885-C (CA)
Inventor: TALLERICO ROY DEAN
IPC: A01K85/10
Filed: 1994-04-21
Granted: 2000-12-19
Abstract: A trolling lure includes multiple spoons or spinners attached in series along a flexible cable leader. The spoons or spinners may be of the same size or of different sizes, and the leader also includes several series of plastic or glass beads along the leader to provide color. Some of the beads may also serve as bearings for the rotational action of the spoons or spinners. Spacing of the spoons or spinners, beads, and other components is achieved by crimping or swaging sleeves onto the multiple strand cable leader at various points. The spoons or spinners are preferably of aluminum, to provide relatively light weight for slower trolling speeds, and are preferably provided with a somewhat porous surface by weathering, knurling, or abrading the surface. The porosity thus achieved provides a more realistic and less reflective surface, and further provides better retention of a fish attracting scent thereon.
Patent CA-2126434-C (CA)
Inventor: TAYLOR DAVID J
IPC: B41M5/155
Filed: 1994-06-21
Granted: 2003-10-14
Abstract: Pressure-sensitive copying material utilises a blend of rapid-and slow-developing chromogenic materials in vegetable oil solvent and an acid clay or synthetic inorganic colour developer. The surface pH of the colour developer is not more than 8.7, which gives rise to enhanced image intensity and fade resistance compared with the use of conventional higher colour developer surface pH values.
Patent CA-2128815-C (CA)
Inventor: BLOECHL MARTINA
IPC: C08G77/38
Filed: 1994-07-26
Granted: 1998-04-07
Abstract: Organopolysiloxanes which contain ester groups and comprise units of the formula (See Fig. I), in which R    may be an identical or different monovalent, SiC-bonded hydrocarbon radical having 1 to 18 carbon atoms, A    may be an identical or different radical of the formula (See Fig. II) in which R1, R2, R3, c, v, w, s, t. is 0 or an integer, the sum of s and t being an integer from 1 to 20, x  is 0 or 1, y  is 0 or 1, the sum of x and y being 1 or 2, a  is 0, 1, 2 or 3, and b  is 0, 1 or 2, with the proviso that the sum of a and b is less than or equal to 3 and the organopolysiloxane contains at least one radical A per molecule.
Patent CA-2133780-C (CA)
Inventor: PECK DONALD RAY
IPC: A01B63/22
Filed: 1994-10-06
Granted: 1996-09-24
Abstract: A depth control includes an actuator tube connected for movement with the rockshaft and having a threaded crank supported on the forward end of the tube.  A valve operator bracket is slidably and nonrotatably received over the tube and includes a threaded portion engaging the crank threads to positively locate the bracket relative to the tube.  The bracket carries a plunger which, as the rockshaft lowers the implement to the working position, is moved into contact with a valve actuator to close a valve and prevent further lowering of the implement.  One turn of the crank gives the same positive movement along the tube each time the depth setting is adjusted so that working depth can be set very accurately and easily.
Patent CA-2135634-C (CA)
Inventor: BAGHERI VAHID
IPC: C08F8/00
Filed: 1993-05-26
Granted: 2005-10-04
Abstract: Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volatile hydrocarbon liquids using a Ziegler catalyst made from a Group IVb metallocene and an aluminoxane cocatalyst, particularly bis(cyclopentadienyl) and bis(indenyl) titanium(IV), zirconium(IV) or hafnium(IV) compounds and methylaluminoxane.  A particularly useful feed stock is a refinery stream containing 1-olefins and isobutylene which is used to make polyisobutylene.  The reactive, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) can be functionalized to make a number of products useful as sealants, petroleum additives, adhesives, and the like by reacting the terminal vinylidine linkage with an aromatic, an epoxidation agent, a silylation agent, maleic anhydride, carbon monoxide and hydrogen, hydrogen, a halogen, a hydrohalogen, and the like.
Patent CA-2148396-C (CA)
Title: Organoclay compositions containing two or more cations and one or more organic anions, their preparation and use in non-aqueous systems
Inventor: NAE HEMI
IPC: C09D7/43
Filed: 1995-05-02
Granted: 1999-11-02
Abstract: A novel organophilic clay gellant comprising the reaction product of:      (a)  a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of natural clay without impurities; (b)  a first organic cation in an amount of from about 75% to about 150% of the cation exchange capacity of the smectite-type clay; (c)  a second organic cation provided by a polyalkoxylated quaternary ammonium salt; and (d)  one or more organic anion(s) that is capable of reacting with said first and second organic cations, to form an organic cation-organic anion complex with said smectite-type clay. The organophilic clay gellant is used in a non-aqueous fluid system such as paints, inks, and coatings to provide improved rheological properties.
Patent CA-2150198-C (CA)
Inventor: JOHNSON RICHARD ARTHUR
IPC: G01R23/10
Filed: 1995-05-25
Granted: 2002-10-15
Abstract: A circuit interrupter with a digital trip unit automatically sets the sampling interval appropriate for the 50 Hz or 60 Hz distribution system to which the interrupter is connected. In order to avoid falsely shifting the interval in response to distorted currents, the trip unit only changes the interval if the number of zero crossings of the current within a fixed number of samples is within two zero crossings of the number of zero crossings for an undistorted current of the other frequency for two consecutive time periods in which the fixed number of samples are taken. Furthermore, changes in the interval are only written into an EEPROM for use on power-up a fixed number of times to preclude disabling the EEPROM. In one embodiment, a 2 pole filter is utilized in the zero crossing counting circuit to eliminate false counts from noise originating in a chopper used in the trip unit power supply. In another embodiment, the zero crossing counting circuit is disabled unless external dc power is available for the trip unit which idles the chopper.
Patent CA-2151590-C (CA)
Inventor: HABER STUART ALAN
IPC: H04L9/32
Filed: 1993-11-17
Granted: 1998-05-26
Abstract: Une attestation cryptographique servant à garantir l'authenticité des éléments d'un document original perd de sa validité lorsque la fonction cryptographique sous-jacente au code d'attestation a été compromise.  Cette invention augmente la fiabilité d'une telle attestation en soumettant l'association de l'attestation originale et la représentation numérique du document à un code d'attestation fondé sur une fonction de moindre vulnérabilité comportant les étapes suivantes : obtenir le document original (11); appliquer la fonction à ce document pour créer l'attestation originale (13); associer document original et attestation (15); et appliquer une autre fonction à cette association du document et de l'attestation pour produire une attestation étendue (17).
Patent CA-2154940-C (CA)
Title: Process for preparing butyl acrylate by direct esterification
Inventor: FAUCONET MICHEL
IPC: C07C67/08
Filed: 1995-07-27
Granted: 1999-03-30
Abstract: Mfr. of butyl acrylate by direct esterification of acrylic acid with butanol, the above esterification being catalysed by sulphuric acid, the reaction water being removed, during all or part of the reaction, in the form of an azeotropic mixt. with butanol and butyl acrylate, the crude reactive mixt. obtd. comprising butyl acrylate, butanol, acrylic acid, butyl acid sulphate, and a trace amount of sulphuric acid. The mfr. is characterised such that: (a) hydrolysis of the butyl acid sulphate in sulphuric acid is by means of pure or normal water in the reaction stream; (b) decanting the medium after hydrolysis in (i) an organic phase contg. butyl acrylate , butanol and some unreacted acrylic acid; (ii) an aq. phase contg. sulphuric acid and the rest unreacted acrylic acid; (c) alkaline washing of organic phase by neutralising acrylic acid in soluble alkaline acrylate in the aq. phase, then washing the neutralised organic phase with water; (d) regenerating acrylic acid present in the form of an alkaline salt in the aq. phase of the first neutralisation, by adding decanted acid waste in the aq. phase of the hydrolysis step and finally a complement of sulphuric acid; (e) extracting acrylic acid also regenerated in this aq. phase with a solvent selected from butanol, butyl acrylate or a mixt. of butyl acrylate and butanol; (f) recycling in the esterification reactor the organic phase obtained at the top of the extraction column, contg. acrylic acid and butanol or butyl acrylate or a mixt. of butanol and butyl acrylate; and (g) recovering the aq. phase at the base of the solvent extraction column, and after neutralisation in sodium hydroxide supplying to a distillation column permitting recovery of butanol at the top, with a view to recycling a process amount, practically freeing from organic pollution. <IMAGE>
Patent CA-2158418-C (CA)
Inventor: NICHOLS JAMES M
IPC: E03F1/00
Filed: 1995-09-15
Granted: 2000-11-21
Abstract: A molded plastic leaching chamber, for dispersing or collecting liquids in soil, has a corrugated arch shape.  The sidewall of the chamber is comprised of alternating slot-perforated peaks and valleys connected by slot-perforated deep webs.  The unit surface length of perforated sidewall is greater than the unit length of chamber.  A combination of interrelated dimensions and angles provide high leaching capacity, strength, and capability to nest for shipment.  The sidewall is reinforced by vertically running ribs; the perforated web is reinforced by zig-zag struts.  Ribs and struts are shaped and positioned to minimize blockage of the slot openings and injection molding.
Patent CA-2167222-C (CA)
Title: Countdown system for conditional access module
Inventor: BESTLER CAITLIN B
IPC: H04N7/167
Filed: 1996-01-15
Granted: 2001-07-24
Abstract: A digital conditional access module for a subscriber terminal comprises a decryption device including at least one the packet identification code (PID) register and an associated countdown register. The decryption device is enabled for decrypting received product packets having a PID matching a PID stored in PID register so long as the associated countdown register is characterized by a non-zero value. Decryption of a product packet results in the countdown register being decremented by a selected factor, the countdown register being prevented from assuming a zero value by setting its contents to a selected value in response to a received conditional access packet containing a PID matching the PID stored in the PID register. The selected value to which the countdown register is set may also be contained within the received conditional access packet.
Patent CA-2167981-C (CA)
Inventor: POLLOCK THOMAS J
IPC: C12N15/54
Filed: 1996-01-24
Granted: 2012-03-27
Abstract: The present invention relates to DNA segments isolated from Sphingomonas sp. and involved in the biosynthetic production of sphingan polysaccharides to increase the production of the polysaccharide in engineered microorganisms. The present invention also relates to methods of engineering strains of Sphingomonas to produce bacteria which are hyperproducers of sphingan, methods of identifying and utilizing DNA  fragments useful to enhance production of sphingan in bacteria and the hyperproducer bacteria.
Patent CA-2172267-C (CA)
Inventor: BIRKS CEDRIC GWILLIAM
IPC: F16G11/02
Filed: 1994-09-16
Granted: 2002-09-10
Abstract: The invention relates to a swaging method and apparatus for swaging flemish eye splices. In particular, the invention concerns the production of swaged joints in which, by virtue of providing ferrules (5) an d swage blocks (16, 17) of a particular construction, du ring a swaging operation displaced material of the ferrule (5) is channelled into t he swage blocks, rather than out of them, and hence oval ity of the swaged ferrule is avoided. In this manner, the swage blocks (16, 17) can  be brought fully home in a single operation until top a nd bottom flats (10c, 10f) of the ferrule (5) are in contact with top and botto m flats of the swage blocks (16, 17).
Patent CA-2180645-C (CA)
Inventor: LARSSON NILS HAKAN IVAR
IPC: E05D15/16
Filed: 1995-01-17
Granted: 2004-03-30
Abstract: The present invention relates to a door of the type having two parallel guide rails, a plurality of guide means (10, 50), which are adapted, when the door moves, to be guided by and run along the guide rails, a plurality of neighbouring door leaf panels (2), which at opposite ends are connected to the associated guide means (10) of said plurality of guide means, and a bottom panel (4) which is pivotally connected to an adjoining panel (2) of said door leaf panels and, via releasable joints, connected to two associated bottom guide means (50) among said guide means. The invention is characterized in that the two bottom guide means (50) of the bottom panel (4) are each connected to an adjoining guide means (50) of a door leaf panel (2) adjoining the bottom panel (4), by means of coupling element (60), and that said releasable joints are arranged between said coupling element (60) on one hand and said bottom panel (4) on the other hand, such that said bottom panel (4), if subjected to such load that said pint is released, can swing outwards, while said coupling elements (60) and said bottom guide means (50) are kept in position relative to the remaining guide means (10) and door leaf panels (2).
Patent CA-2182060-C (CA)
Inventor: HATANAKA SHIGETO
IPC: C07B61/00
Filed: 1996-07-25
Granted: 2000-06-27
Abstract: A process for desulfurizing catalytically cracked gasoline containing sulfur compounds and olefin components, which comprises the steps of: 1)     first desulfurizing the catalytically cracked gasoline in the presence of a hydrodesulfurization catalyst at a desulfurization rate of 60 to 90%, a reaction temperature of 200 to 350°C, a hydrogen partial pressure of 5 to 30 kg/cm2, a hydrogen/oil ratio of 500 to 3,000 scf/bbl, and a liquid hourly space velocity of 2 to 10 l/hr, said first desulfuriing step comprising supplying a feed having a hydrogen sulfide vapor concentration of not more than 0.1% by volume, and 2)      next desulfurizing the treated oil obtained in the first step in the presence of a hydrodesulfurization catalyst at a desulfurization rate of 60 to 90%, a reaction temperature of 200 to 300°C, a hydrogen partial pressure of 5 to 15 kg/cm2, a hydrogen/oil ratio of 1,000 to 3,000 scf/bbl, and a liquid hourly space velocity of 2 to 10 l/hr, said second desulfurizing step comprising supplying a feed having a hydrogen sulfide vapor concentration of not more than 0.05% by volume.  A reduction in octane number due to hydrogenation of olefin components is minimized while achieving a high desulfurization rate.
Patent CA-2185911-C (CA)
Title: Liquid level switch
Inventor: CHEREK BOGDAN
IPC: G01F23/296
Filed: 1995-05-24
Granted: 2000-05-16
Abstract: A piezoelectric liquid level switch is provided which can be made immune to standing wave effects and provides an unequivocal response to liquid contact. The switch incorporates an electrical oscillator circuit including frequency defining elements (C2, L1 \A P) in both feed forward and feedback circuit paths, the frequency defining element in the feedback path being a piezoelectric crystal device (P) constructed to have a lowest frequency vibration mode in air which is substantially equal to a first frequency defined by the frequency defining element (C2, L1) in the feed forward circuit, which mode is suppressed by acoustic coupling of the device (P) to a body of liquid such that a lowest frequency vibration mode of the device when in contact with liquid has a second frequency which is substantially above the frequency of the frequency defining element (C2, L1) in the feed forward circuit, whereby positive feedback through the oscillator circuit can occur when the piezoelectric device is in contact with air, but not when it is in contact with liquid, and a threshold circuit (T) for detecting an output from the oscillator circuit at said first frequency. The piezoelectric element is preferably coupled to a column coaxial with it, the column having n liquid contacting member at its free end, such that the lowest resonant frequency of the device is substantially increased when the member is in contact with liquid.
Patent CA-2187846-C (CA)
Title: Device for monitoring a predetermined level of a liquid in a container
Inventor: MUELLER ROLAND
IPC: G01F23/296
Filed: 1996-10-15
Granted: 2000-09-26
Abstract: For monitoring a predetermined level of a liquid in a container an ultrasonic sensor is fitted on the outer surface of the container wall at a measurement point situated at the height of the level to be monitored, said sensor containing an ultrasonic transducer having a diaphragm in contact with the container wall. The components of the ultrasonic sensor including those of the ultrasonic transducer are grouped together in a sensor block which is releasably connected to an adapter secured to the container wall, this adapter being configured so that it can be secured in any way required to containers of differing shape and/or material.
Patent CA-2189692-C (CA)
Title: Electronic device for converting electrical energy
Inventor: MEYNARD THIERRY
IPC: H02M7/48
Filed: 1996-03-06
Granted: 2004-05-25
Abstract: The converter has a succession of controlled commutators each having two switches, with two front and two back poles. These are cascade connected between a voltage and current source. Each commutation cell has an associated capacitor (C1,C2..Cn). The switches are controlled successively to two conducting states in a cyclically repeated period. If shifted a fraction of time period, the capacitors sustain the crossing voltages, equal to source voltage divided by cell numbers and cell ranking. Mean capacitor voltages are measured (VMO1,VMO2...VMOn) for each cell and compared (VE1,VE2...VEn) with their nominal charge. Thus complementary controls (MCC1, MCC2...MCCn) modify the converter control signals to reduce the difference between actual and nominal voltages, by changing the first conducting time of the associated cell.
Patent CA-2190985-C (CA)
Title: Method and apparatus for generating, recording and transmitting an errorproduct code block having an improved check code arrangement
Inventor: KOJIMA TADASHI
IPC: H03M13/29
Filed: 1996-04-08
Granted: 2000-11-28
Abstract: There is provided a method of processing data for generating an error correction product code block devised so as to maintain the current level of redundancy after the error correcting ability is modified as a result of advancement of simiconductor and data recording/transmission technologies. Unlike any known technique of configuring a Reed-Solomon error correcting product code block of (M+PO)x(N+PI) bytes for an information data of (MxN) bytes, an error correcting product code block data structure is obtained by configuring a (Kx(M+1)x(N+P))-byte Reed-Solomon error correcting product code block for (KxMxN)-byte data, making K variable to consequently make the entire size of the Reed-Solomon error correcting product code block variable. At the same time, the error correcting ability varies in proportion to the value of K without increasing redundancy.