baber/WOPTO huggingface dataset:
Patent CA-2154490-C (CA)
Title: Closed loop power controller
Inventor: MODGIL ONKAR S
IPC: H03F1/08
Filed: 1994-01-13
Granted: 2003-03-25
Abstract: A power controller includes a closed loop system (10) having a summer (12) to sum an input signal with a derived output signal to produce a difference signal. A comparator (22) compares the difference signal with a reference signal to produce a digital signal representative of the polarity difference between the difference signal and the reference signal. Two switching networks (30) respond to the digital signal to produce high energy outputs representative of the digital signal which are used to reduce the level of the difference signal in a frequency band of interest at the comparator (22). A low pass filter (32) between the high energy outputs and the comparator (22) attenuates high frequency noise. A low-pass filter (32) of at least the third order, connected in the closed loop, enhances the signal to noise ratio. A specific application of the power controller is a power amplifier with the input signal in the audio frequency range.
Patent CA-2157442-C (CA)
Title: Process for producing separation functional fibers and ion-exchange fibers produced therefrom
Inventor: SUGO TAKANOBU
IPC: C08J5/20
Filed: 1995-09-01
Granted: 2006-07-18
Abstract: Separation functional fibers are produced by exposing fibers with a core/sheath structure to an ionizing radiation and then grafting a polymerizable monomer to the fibers. Ion-exchange fibers are produced by introducing, through radiation-initiated graft polymerization, ion-exchange groups into the sheath of each of composite fibers the core and the sheath of which are composed of different kinds of high-polymer components. The separation functional fibers and the ion-exchange fibers are useful in various applications such as the production of pure water in electric power, nuclear, electronic and pharmaceutical industries and the demineralization of high-salt content solutions in the production of foods and chemicals. The fibers are also useful in removing harmful components from gases, as well as odorous components such as ammonia.
Patent CA-2160894-C (CA)
Title: Reseau et service de telecommunication multimedia
Inventor: STUNTEBECK PETER H
IPC: H04L12/70
Filed: 1994-04-15
Granted: 1999-11-09
Abstract: Un réseau de télécommunications multimédia (10) assure un service téléphonique pouvant impliquer une ou plusieurs communications audio, vidéo et de données. Dans un mode de réalisation, le réseau de télécommunications multimédia (10) contient un complexe de services de réunion virtuelle (28) (VMS) assurant un service de télécommunications multimédia auprès des abonnés au réseau (10). Des appels téléphoniques multimedia peuvent être réalisés automatiquement par le complexe de service de réunion virtuelle (28) de la même manière que celui couramment utilisé pour les appels téléphoniques audio classiques. Le réseau de télécommunications multimédia (10) contenant ce complexe de services multimédia (28) est capable de connecter entre eux des utilisateurs disposant de divers types d'équipements et de traiter des mécanismes d'acccès à un réseau intégré et non intégré.
Patent CA-2163641-C (CA)
Title: Multiple sclerosis virus
Inventor: GARSON JEREMY
IPC: C12N15/09
Filed: 1994-05-24
Granted: 2003-12-30
Abstract: The present invention provides a polynucleotide in substantially isolated fo rm comprising a sequence of nucleotides which is capable of selectively hybridizing to the genome of the human multiple sclerosis vir us (HMSV) or the complement thereof, wherein HMSV is characterized by: (i) a positive stranded RNA genome; (ii) said genome comprising one or more open reading frames (ORF) encoding protein(s) or polyproteins(s); (iii) said genome encoding a reverse transcriptase enzyme; and (iv) said genome comprising nucleotide sequences which are homologous to or selectively hybridizable with any one o f the nucleotide sequences illustrated in Seq. ID Nos. 1 to 6.
Patent CA-2165848-C (CA)
Inventor: GHALI AMIN
IPC: E04C5/06
Filed: 1995-12-21
Granted: 1999-03-30
Abstract: A reinforcing assembly for use in structural concrete members, such as slabs, footings, raft foundations, beams, walls and columns, has at least one reinforcing stud having an elongate stem and an anchor head at least at one end of the stem for anchoring the stud adjacent a face of the concrete member, and an elongate support element for mechanically retaining therein the anchor head of the stud. The support element is in the form of a U-shaped trough having a base and sidewalls which hold the stud and confine the concrete about the retained anchor head. The trough decreases the size of anchor head necessary to avoid concrete crushing behind the anchor head and distributes some anchorage forces away from the anchor head. The trough also spaces and positions a plurality of studs in the concrete member.
Patent CA-2167379-C (CA)
Inventor: HUYNH-BA GIA
IPC: C08L77/00
Filed: 1994-07-25
Granted: 2005-10-25
Abstract: La matrice de ce mélange polymère est un polyamide aliphatique. Ce mélange polymère comprend également une phase dispersée de polycarbonate ainsi qu'un agent de compatibilité comportant des groupes pendants d'époxy ou d'anhydride succinique. Ce mélange a été obtenu dans des conditions de mélange telles que la température de fusion de la masse de polymère est comprise entre 290  DEG C et 350  DEG C. Ce mélange associe une excellente solidité à une bonne rigidité.
Patent CA-2170233-C (CA)
Title: Method of forming refractive index distribution in light transmission path, and optical filter and method of using the same
Inventor: NAKAISHI HIROYUKI
IPC: G02B6/124
Filed: 1996-02-23
Granted: 2000-10-03
Abstract: A method of forming a refractive index distribution in a light transmission path involves applying a photosensitive material layer to the surface of a clad layer, forming a mask pattern of the photosensitive material layer through photo-lithography, and irradiating through the mask pattern a light transmission path with an electromagnetic wave having a wave-length not exceeding that of visible light, thereby forming a refractive index fluctuation distribution corresponding to the mask pattern in a core.
Patent CA-2171914-C (CA)
Inventor: INDEN YOSHIMI
IPC: C08F220/38
Filed: 1996-03-15
Granted: 2001-12-11
Abstract: A composition suitable as a modifier for polymer,  is disclosed, for example, which composition comprises:          (1) a compound illustrated bellow by the general formula: (1)   (1) wherein, R is hydrogen atom or methyl group, A is an alkylene group having 2-4 carbon atoms,  (OA) n indicates a polyoxyalkylene group, M is a monovalent or divalent cation, n is 2-30, and m is 1 or 2 ;        (2) 50-3,000 ppm, based on the weight of the composition, of hydroquinone monomethyl ether as an organic polymerization inhibitor ; and (3) 0.01-20 ppm of copper ion based on the weight of the composition.        The modifier composition of the present invention has an excellent thermal shelf stability at an ordinary temperature.
Patent CA-2179377-C (CA)
Inventor: BRANDES LORNE J
IPC: A61K33/243
Filed: 1994-12-07
Granted: 2005-01-25
Abstract: Le cancer de la prostate, particulièrement le cancer de la prostate métastatique ne réagissant pas aux hormones, est traité par cyclophosphamides ou tout autre agent normalement inactif. La potentialisation de l'activité anticancéreuse et l'amélioration de la toxicité associée aux cyclophosphamides sont assurées par une injection intraveineuse initiale de DPPE par perfusion pendant environ une heure avant le traitement par les cyclophosphamides.
Patent CA-2184480-C (CA)
Inventor: GRAY ALEXANDER HAMILTON
IPC: B03B5/10
Filed: 1995-03-15
Granted: 2003-01-21
Abstract: A separator (1) for separating dense particulates from slurry includes a sealed housing (2) enclosing a submerged screening bed (33) which allows dense particulates to fall into a hutch (6) from which they may be discharged. The housing has a slurry inlet (4) arranged to deliver slurry to a sump (3) which directs slurry to flow radially over the bed. An annular cavity (23) formed between the housing and bed receives tailings flowing off the top of the bed. An outlet (7) from the annular cavity allows discharge of the tailings, and a liquid inlet (30) to the hutch provides an upward flow of liquid through the bed. The bed is agitated to assist passage of dense particulates.
Patent CA-2188475-C (CA)
Inventor: KRAGE WILLIAM G
IPC: E01F15/00
Filed: 1993-09-13
Granted: 2000-01-11
Abstract: An  energy  absorbing  roadside  barrier  includes  an elongated container configured to receive and hold a volume of water.   The container defines a pair of sidewalls having sufficient rigidity to stand alongside a roadway and sufficient resilience to deform upon an impact by a vehicle and to recover their shape after at least some impacts.   The barrier also includes at least one port extending between the sidewalls, preferably sized to receive a fork of a forklift.
Patent CA-2193443-C (CA)
Title: Laser pulse profile control by modulating relaxation oscillations
Inventor: HOLLEMAN GERALD W
IPC: H01S3/23
Filed: 1996-12-19
Granted: 2001-12-11
Abstract: A method and apparatus for controlling the form and timing of pulses emitted by a high-power solid-state laser, without the need for complex feedback circuits. The width and peak intensity of relaxation pulses emitted by the laser are controlled by use of an acousto-optic modulator (14) installed in the laser cavity, to lock the relaxation pulses to the frequency of radio-frequency (rf) control signals applied to the modulator. The number and average rate at which the pulses are emitted from the laser are independently controlled by varying the duty cycle of diodes (20) used to pump solid-state amplifiers (18) installed in the laser cavity. Short pump pulses can be selected to deliver only a few relaxation pulses from the laser, or longer pump pulses can be selected to deliver large numbers of relaxation pulses during each pump pulse. Feedback control of the modulator (14) is not needed because the pumping rate is uniform for the duration of each pump pulse and, therefore, the peak intensities of relaxation pulses emitted by the laser are relatively uniform. Accordingly, the solid-state laser can be conveniently controlled to produce a desired average power output while maintaining good beam quality.
Patent CA-2193603-C (CA)
Title: Fuse box
Inventor: KIYOTA HIROTAKA
IPC: H01R9/22
Filed: 1996-12-20
Granted: 1999-08-10
Abstract: A fuse-box which is  reduced in size and which is designed so that the electric cable extends straight from the fuse-box.  In the box body (21), a fuse-receiving portion (3) is provided in an upper surface of the box body (21)  and electric-cable-end receiving portions (10) are produced in a lower surface of the box body (21).  Further, screwing opening portions (8) are provided in opposite sides of the box body (21) so that a round terminal (17), connected to an electric cable (16) and disposed in the electric-cable-end receiving portion (10), is fixedly tightened to a screw-driven terminal (7) of the fuse (2) in the fuse-receiving portion (3) by a screw member (18).  Further, an electric cable-fixing member (32) is provided so as to extend down from the box body (21) so that the electric cable (16), attached to the electric-cable-end receiving portion  (10),  is fixed vertically along the electric cable-fixing member (32).  On the other hand, a lower cover (22) attached to the lower surface (24) of the box body (21) has electrically insulating covers (12) for covering the screwing opening portions (8), and a bottom wall portion (5) having an electric cable lead-out opening (36) through which the electric cable (16) passes to the outside.
Patent CA-2207672-C (CA)
Inventor: TOOZE ROBERT PAUL
IPC: C07C69/63
Filed: 1995-12-22
Granted: 2006-10-10
Abstract: A catalyst system capable of catalysing the carbonylation of ethylene and a process which uses such a system wherein the catalyst system is obtainable by combining a metal of Group VIII, e.g. palladium, or a compound thereof and a bidentate phosphine, e.g. bis (di-t-butyl phosphino)-o-xylene.
Patent CA-2210781-C (CA)
Title: Quick-setting cement containing clinker based on calcium fluoro-aluminate mixed with lime
Inventor: COSTA UMBERTO
IPC: C04B22/12
Filed: 1997-07-17
Granted: 2007-10-02
Abstract: The present invention regards a particularly quick-setting Portland cement clinker containing calcium fluoro-aluminate (11CaO.cndot.7Al2 0 3.cndot.CaF2) mixed with lime that has not undergone the burning process of the clinker.
Patent CA-2216356-C (CA)
Inventor: MCKENZIE STUART
IPC: E05D7/10
Filed: 1997-09-23
Granted: 2000-08-22
Abstract: A simple locking latch arrangement is disclosed which maintains barbecue side shelves in the horizontal orientation.  The latch arrangement is freely pivotal on pin members of the shelf and prevent upward removal of the pins unless the latch is moved to the release position. The latch is designed to provide a gravity bias urging the latch to the locked position.
Patent CA-2225019-C (CA)
Inventor: MEIJER WIETZE JAN HENDRIK
IPC: G01S7/41
Filed: 1997-12-16
Granted: 2008-12-02
Abstract: The invention relates to a method for realizing a radar transmission for a high-resolution radar. According to the method, a number of groups of pulses is transmitted with incremental frequencies, each group also comprising a number of pulses with incremental frequencies, which pulses are transmitted simultaneously or substantially simultaneously.
Patent CA-2228216-C (CA)
Title: Process for controlling the ignition point in internal combustion engines
Inventor: HELLMICH WOLFRAM
IPC: F02M45/00
Filed: 1996-06-21
Granted: 2001-03-20
Abstract: A process for controlling the ignition in an internal combustion engine with a device for injecting fuel into a combustion chamber of said engine, in which a control signal for the injection process and a control signal for the ignition process are used. The control signal for the injection process is used to start the measurement of a predetermined delay for the issue of the ignition control signal, as well as for the r.p.m. or load dependent switching to the control of the ignition through the measurement of the crankshaft angle.
Patent CA-2233749-C (CA)
Title: Forms transfer system and method
Inventor: MUNSON THOMAS P JR
IPC: B65H31/22
Filed: 1998-03-31
Granted: 2007-05-08
Abstract: Business forms are stacked using a cart having first and second portions pivotally movable with respect to each other from a substantially L-shaped configuration to a substantially in-line configuration with each portion having a conveyor associated with it, and a docking station. The cart with the first and second portions in the substantially L-shaped configuration is moved into operative association with the docking station.      The cart is lifted and rotated in the docking station so that the second portion is substantially horizontal, and the first portion of the cart is pivoted with respect to the second portion so that the first portion is in the substantially in-line configuration with respect to the first portion. The conveyors are operated so that business forms are moved onto the first portion, and then onto the second portion, with the first conveyor operating at a speed of at least fifty percent greater than the first conveyor (e. g. about ten times as fast). An indicator automatically indicates when the frame is substantially full of forms and then the forms are moved off the first portion and operation of the conveyors stopped, and then the first portion is pivoted back to the substantially L-shaped configuration, the cart is lowered and rotated so that the second portion is substantially vertical, and the cart is manually rolled out of contact with the docking station.
Patent CA-2235091-C (CA)
Inventor: LAUTZENHISER LLOYD LYNN
IPC: H03L7/099
Filed: 1998-04-17
Granted: 2001-09-04
Abstract: A variable-deviation-sensitivity voltage controlled oscillator includes an AC voltage divider that selectively decreases deviation sensitivity. Above a pre-determined roll-off frequency, the AC voltage divider attenuates voltage spikes and other electrical noise, thereby decreasing undesirable incidental frequency modulation. Below the roll-off frequency, the voltage dividing function ceases, and full deviation sensitivity of the voltage controlled oscillator returns. When used in a phase locked loop,, the voltage controlled oscillator responds to loopfrequencies as well as modulation frequencies with decreased deviation sensitivity, thereby attenuating voltage spikes and other electrical noise, and thereby attenuating incidental frequency modulation. At loop control frequencies below the pre-determined roll-off, including DC, the oscillator responds at full deviation sensitivity thereby providing an unattenuated range of capture.
Patent CA-2235523-C (CA)
Title: Method of treating sludge containing arsenic
Inventor: SHIMIZU TAKU
IPC: C02F11/145
Filed: 1998-04-22
Granted: 2002-09-24
Abstract: A method of treatment of an arsenic sludge obtained from a solid-liquid separation step on arsenic waste water by adjusting the value of pH to 12 or higher by adding a calcium compound is disclosed. The method is characterized by addition of hydrated lime and calcining the sludge.
Patent CA-2238724-C (CA)
Title: Combined wire lead and interphase barrier for power switches
Inventor: CHANGLE JOSEPH F
IPC: H01H33/53
Filed: 1998-05-27
Granted: 2007-03-20
Abstract: Insulative guide members secured to an end face of switching apparatus between power terminals route electrical leads from attachment devices mounted inside the molded housing of the switch which exit the housing above the power terminals down between the power terminals toward the rear face thereby providing physical separation and electrical isolation between these leads and the power terminals and conductors connected to them. The insulative guide members are secured to the molded housing by a tongue-and-groove connection. The insulative guide members also form interface barriers with increased, oversurface distance between adjacent power terminals and conductors which can be further increased by longitudinal ribs on the guide members. In another configuration, the guide members can be secured to the confronting end faces of adjacent switching apparatus to provide interface isolation and to route leads from auxiliary switches from adjacent a front face of the switches toward a rear face.
Patent CA-2238827-C (CA)
Inventor: SPARTIOTIS KONSTANTINOS EVANGE
IPC: H01L31/0224
Filed: 1996-11-26
Granted: 2002-10-29
Abstract: A method, suitable for forming metal contacts (31) on a semiconductor substrate (1) at positions for defining radiation detector cells, includes the steps of forming one or more layers of material (11, 12) on a surface of the substrate with openings (23) to the substrate surface at the contact positions; forming a layer of metal (24) over the layer(s) of material and the openings; and removing metal at (28) overlying the layer(s) of material to separate individual contacts. Optionally, a passivation layer (11) to be left between individual contacts on the substrate surface, may be applied during the method. A method according to the invention prevents etchants used for removing unwanted gold (or other contact matter) coming into contact with the surface of the substrate (e.g. CdZnTe) and causing degradation of the resistive properties of that substrate. The product of the method and uses thereof are also described.
Patent CA-2240358-C (CA)
Inventor: ECKHARDT GERHARD
IPC: B65G15/56
Filed: 1998-06-11
Granted: 2004-01-06
Abstract: In a textile belt (1), such as a screen, conveyor belt or the like, wherein attached to the end edges of the belt ends are helical coils (4) which can be intertwined with each other and held together by means of an insertion wire, insertion pin or the like which can be inserted, the helical coil is divided of each end edge into at least three portions, namely two narrow edge portions (7) and a central portion (3) wherein each portion is connected to the belt independently of the other portions.  Particularly, the central portion (3) of the helical coil (4) is interwoven over its entire width into the textile material of the belt (1).
Patent CA-2242466-C (CA)
Inventor: CHARLEBOIS RAYMOND
IPC: D06M11/79
Filed: 1997-01-10
Granted: 1999-09-14
Abstract: Polymer composite products, including products made of polymer concrete, reinforced polymer concrete and reinforced plastics, such as bulk molding compound, sheet molding compound, mineral molding compound and advanced molding compound systems, are produced by the simultaneous application of vibration, heat and pressure to a mixture of filler and polymeric binder. The simultaneous application of vibration, heat and pressure provides a protective layer of polymerized binder that protects the surfaces of the mold and provides products that are substantially free of curling, cracking or voids.  The process and apparatus of the present invention substantially reduce the time required to cure polymer composite products.
Patent CA-2251153-C (CA)
Title: Method of sterilization in diffusion-restricted environments
Inventor: JACOBS JON MORRELL
IPC: A61L2/00
Filed: 1997-04-04
Granted: 2005-06-21
Abstract: Methods for peroxide vapor sterilization of medical devices and similar instruments having long narrow lumens or diffusion restricted areas includes the step of contacting the article to be sterilized or a diffusion-restricted environment containing said article with a source of peroxide prior to exposure to a vacuum or a vacuum followed by plasma. The methods are such that, upon vaporization of the source of peroxide caused by the vacuum, the peroxide remains in contact with the article for a time sufficient to achieve sterilization.
Patent CA-2251298-C (CA)
Inventor: NELSON CHARLES B
IPC: E01F9/669
Filed: 1998-10-22
Granted: 2001-08-14
Abstract: An  energy  absorbing  barrier  system  comprises  a plurality of composite concrete barriers, each barrier including a reinforced concrete section having a back wall  upon  a  support  base.    The  support  base  is connected to a concrete veneer face section having an upper portion and a lower portion.  The face section forwardly slopes from the support base to form an obtuse angle therewith such that the upper portion of the face section extends at least partially over the lower portion of the face section.  The back wall and the face section defines an intermediate center core section therebetween consisting of a light density crushable material.   The connection of the concrete veneer face section to the support base has a sheer point that facilitates the collapsing in of the face into the intermediate core section.
Patent CA-2251653-C (CA)
Inventor: PARKER JONATHAN A
IPC: A61C7/36
Filed: 1997-04-14
Granted: 2006-08-01
Abstract: . An intraoral orthopedic appliance (10) with orthopedic screw adjustment mechanism (30) and method of manufacture adjustably attaches an appliance upper dental part (26) and lower dental part (28) together. The adjustment changes anterior-posterior relationship of the two parts. The appliance (10) includes a pair of orthopedic screw adjustment mechanisms (30) on opposite sides of the dental arch which connect the two parts (26, 28) together to provide the adjustment. The orthopedic screw adjustment mechanism includes an orthopedic screw (35) which is used to adjust the spacing between a first part A (32) and a second part B (34). First part A (32) and second part B (34) are attached to the dental upper part (26) and the dental lower part (28) so as to provide for a limited movement between the two parts. This allows the patient to move the lower jaw a limited amount with respect to the upper jaw.