baber/WOPTO huggingface dataset:
Patent CA-2006483-C (CA)
Title: Accelerated sedimentation of sludge
Inventor: TOMA PETRE
IPC: B03B9/02
Filed: 1989-12-20
Granted: 1999-01-19
Abstract: A process is provided for treating the sludge in the tailings pond of a plant which uses the hot water process for extracting bitumen from oil sand.  A predetermined quantity of a cationic surfactant is added to the sludge and the mixture is retained for a predetermined time.  The mixture is aerated to flocculate and float off the fines and the residual oil, a portion of which is removed.  As a result the sedimentation of the sludge is thereby accelerated.
Patent CA-2008699-C (CA)
Title: Regulation of gene expression
Inventor: BRIDGES IAN G
IPC: C12N15/73
Filed: 1990-01-26
Granted: 2003-08-19
Abstract: 1. Pseudo-operator sequences may be located in (or inserted into) plant genomes and utilised to drive expression of foreign genes. These pseudo-operator sequences are nucleotide sequences which are present at a suitable location in a gene at which repressor binding will lead to inhibitation or enhancement of gene expression. The disclosed technique permits the design of altered specificity repressors, which bind the pseudo-operators.
Patent CA-2009072-C (CA)
Title: Curable organopolysiloxane composition exhibiting improved adhesion in the cured form
Inventor: KASUYA AKIRA
IPC: C08F283/12
Filed: 1990-02-01
Granted: 1999-07-13
Abstract: Organopolysiloxane compositions curable by a hydrosilylation reaction contain a novel adhesion promoter consisting essentially of 1) a carboxylic acid ester containing an acryloyloxy or methacryloyloxy group and an alcoholic functional group and 2) an organosilicon compound containing a silicon-bonded vinyloxy or substituted vinyloxy group. The compositions exhibit excellent adhesion to both organic and inorganic substrates that are in contact with the compositions during curing.  The adhesion on plastics is especially good.
Patent CA-2010812-C (CA)
Title: Disk cartridge
Inventor: YAMADA TAKASHI
IPC: G11B23/03
Filed: 1990-02-23
Granted: 1994-05-10
Abstract: In a disk cartridge of the invention, a lubricating polymer film as a resin in which a solid lubricant or a reinforcing material is dispersed is arranged in a case near the center hole of a disk.  Since this lubricating polymer film is hardly abraded even with a disk whose number of revolutions per unit time is high, almost no dust is generated.  Therefore, a disk cartridge with higher reliability can be provided.
Patent CA-2012361-C (CA)
Title: Transmission system with wideband virtual channel
Inventor: VENTOLA SABINO R
IPC: H04L5/00
Filed: 1990-03-16
Granted: 2001-07-24
Abstract: A method is described for transmitting signals having a bit-rate higher than the bit rate of the base rate channels in a digital data transmission system normally providing discrete base rate data channels. The method comprises allocating a group of n+1 predetermined bit-rate data channels as a virtual channel for the transmission of the high bit-rate signals. One of the n+1 channels is designated as an overhead channel arid the remaining n channels are designated as data channels. The high bit-rate signals are divided into n sub-signals having a bit-rate equal to or less than the predetermined bit-rate, and transmitted over the n data channels. Delay calibration signals are transmitted at intervals over the overhead and data channels, the delay calibration signals being transmitted in the data channels in slots normally allocated for data, said data slots being transmitted over said overhead channel while the calibration signals are transmitted in their place. At the far end the delay calibration signals are used to reassemble the n subsignals into the original high bit-rate data signal.
Patent CA-2012668-C (CA)
Title: Four transistor static ram cell
Inventor: WANLASS FRANK
IPC: G11C11/419
Filed: 1990-03-21
Granted: 2000-08-01
Abstract: A static RAM cell includes a first pair of transistors, which act as pass or switching transistors during a read or write operation, and as leads during a refresh operation, and a second pair of current sink transistors connected as a cross-coupled flip-flop and connected to the first pair of transistors. The operation of the memory cell transistors during read and write and refresh operations is controlled by different levels of a control signal applied to their respective control terminals, whereby refreshing does not affect reading or writing of data from or into the SRAM cell.
Patent CA-2014132-C (CA)
Title: Voice detection apparatus
Inventor: ISEDA KOHEI
IPC: G10L25/21
Filed: 1990-04-09
Granted: 1996-01-30
Abstract: A voice detection apparatus comprises a signal power calculation part for calculating a signal power of an input voice signal for each frame of the input voice signal, a zero crossing counting part for counting a number of polarity inversions of the input voice signal for each frame of the input voice signal, an adaptive prediction filter part for obtaining a prediction error signal of the input voice signal based on the input voice signal, an error signal power calculation part for calculating a signal power of the prediction error signal which is received from the adaptive prediction filter part, a power comparing part for comparing the signal powers of the input voice signal and the prediction error signal and for obtaining a power ratio between the two signal powers, and a discriminating part for discriminating voiced and silent intervals of the input voice signal based on the signal power calculated in the signal power calculation part, the number of polarity inversions counted in the zero crossing counting part and the power ratio obtained in the power comparing part.  The discriminating part discriminates the voiced and silent intervals of the input voice signal based on the number of polarity inversions.  On the other hand, the discriminating part compares an absolute value of a difference of power ratios between frames with a first threshold value and discriminates whether a present frame is a voiced interval or a silent interval depending on whether a previous frame is a voiced interval or a silent interval when the signal power of the input voice signal is less than a second threshold value.
Patent CA-2020522-C (CA)
Title: Apparatus and method for loading bios from a diskette in a personal computer system
Inventor: BEALKOWSKI RICHARD
IPC: G06F9/445
Filed: 1990-07-05
Granted: 1993-11-09
Abstract: ABSTRACT            An apparatus and method for loading BIOS from a diskette drive into a personal computer system normally connected to  a  hardfile,  such  as  a  fixed  disk.   The  personal computer system further includes a system processor,  a random access main memory,  a read only memory  and  a switching means.  The switching means generates a signal to indicate a mode for whether BIOS loads from either diskette  or  disk.   In  a  priority  mode,  BIOS  loads immediately  from  diskette.   In  a  recovery mode,  BIOS loads  from diskette  after testing the disk  subsystem.          The read only memory includes a first portion of BIOS and data representing the type of system processor and system planar  I/O  configuration.   The  first portion  of BIOS initializes the system and queries the switching means.          If the fixed disk is not available or the master boot record on the disk is invalid, the first portion of BIOS reads in a master boot record from the diskette drive.  For either mode, the master boot record includes a data segment and an executable code segment.  The data segment includes data representing system hardware and a system configuration  which  is  supported  by  the  master  boot record. The first BIOS portion transfers control to the executable code segment which confirms the master boot record  is  compatible  with  the  system  hardware  by verifying that the data from the data segment of the master boot  record  agrees  with  the  system processor, system planar, and planar I/O configuration.     If the master boot record is compatible with the system hardware, the executable code segment confirms that the system configuration has not changed and loads in the remaining  BIOS  portion  from  the  diskette  drive  into random access memory.  The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor to begin executing the BIOS now in random access memory.   BIOS,  executing in random access memory, then boots up the operating system to begin operation of the personal computer system.
Patent CA-2020632-C (CA)
Title: Camouflage fabric
Inventor: LEONARD ROBERT ROUTTE
IPC: F41H3/00
Filed: 1990-07-06
Granted: 1999-09-14
Abstract: A lightweight composite camouflage construction having an open mesh net substrate, and a continuous sheet overlying the substrate and bonded thereto along plural spaced lines of attachment. The sheet is cut on opposite sides of the lines of attachment to form a plurality of lobes simulating the appearance of natural objects of a terrain, the sheet being color patterned in a desired coloration camouflage. Also disclosed are a method and apparatus for producing the camouflage construction.      Method and apparatus for the manufacture of a composite camouflage construction having an open mesh net substrate, and a continuous sheet overlying the substrate and bonded thereto along plural spaced lines of attachment, with lobes of the sheet cut to simulate the appearance of leaves and foliage. Apparatus and method includes a sewing station for stitching the sheet along plural spaced lines of attachment to the substrate to form open-ended pockets or channels between the sheet and substrate. The cutting station spaces the sheet from the substrate and a heated cutting wire reciprocates between adjacent lines of stitches to cut the sheet, open the channel, and use a series of loose lobes simulating the appearance of natural objects of a terrain.
Patent CA-2021733-C (CA)
Title: Azole-substituted cycloalkanol derivative, a process to produce the same and a use of the derivative as an agricultural and horticultural fungicide
Inventor: KUMAZAWA SATORU
IPC: A01N43/50
Filed: 1990-07-23
Granted: 1998-07-21
Abstract: The present invention discloses an azole-substituted cycloalkanol derivative represented by the formula (I) available for agricultural and horticultural fungicide and a process for preparing the same:     (see fig. I) wherein R1 represents a lower alkyl group, R2 represents a hydrogen atom or a lower alkyl group, n is an integer of 1 or 2 and A represents a nitrogen atom or a CH group.
Patent CA-2029051-C (CA)
Title: Wavelength tunable optical filter
Inventor: CIMINI LEONARD J
IPC: G02F1/025
Filed: 1990-10-31
Granted: 1994-03-15
Abstract: WAVELENGTH TUNABLE   OPTICAL FILTER Abstract A wavelength tunable optical filter having a characteristic single transmission peak for enhanced tunability comprises a phase control section positioned between a Distributed Bragg Reflector section and a high reflectivitymirror. The Distributed Bragg section comprises a periodic grating positioned over an end portion of a passive waveguide region whereas the phase control section comprises the portion of the passive waveguide region located between the grating and the mirror. Continous tunability in the range of several THz may be achieved by controlling the refractive index in either the phase control or distributed Bragg reflector section. The optical filter is expected to have a frequency switching time of a few nanoseconds and, thus, is applicable to both transmission and switching applications.
Patent CA-2030270-C (CA)
Title: Slide actuation hydraulic valve for a lawn and garden tractor
Inventor: RUSH ROBERT
IPC: F16K11/065
Filed: 1990-11-19
Granted: 1998-09-15
Abstract: A slide valve is disclosed utilizing simple straight through drilled holes in the body of the valve in combination with a machined central fluid return passage and extensions off of the cylinder grooves in the valve slide.
Patent CA-2036058-C (CA)
Title: Hydrometallurgic method for processing raw materials containing zinc sulphide
Inventor: FUGLEBERG SIGMUND PEDER
IPC: C22B11/00
Filed: 1991-02-15
Granted: 1998-12-08
Abstract: The invention relates to a method for recovering various valuable materials in connection with the hydrometallurgical production of zinc.  The method is particularly suited for feeding different types of raw materials into the various stages of a process carried out in atmospheric conditions. Valuable materials such as lead, silver and gold are recovered by means of the said method.
Patent CA-2048893-C (CA)
Title: Game score indicator
Inventor: GARRET MICHAEL J
IPC: A63D15/20
Filed: 1991-08-09
Granted: 1994-08-30
Abstract: ABSTRACT OF THE DISCLOSURE A game score computing device has first manually actuatable input switches for inputting data corresponding to game scores of game players, second manually actuatable input switches for inputting timing data corresponding to the durations of the playing times of each of the game players and a data processor responsive to the game score data and the timing data for determining which of the game players is a winning player.  A display responsive to the data processor provides a visual display identifying the winning player.
Patent CA-2049793-C (CA)
Inventor: JANSEN WAYNE
IPC: B03D1/14
Filed: 1991-08-23
Granted: 1995-06-27
Abstract: An aperture  is  formed  in the bottom wall  of  the launder.  A downwardly extending container communicates with the aperture.  A weir is positioned immediately downstream of the aperture.  The container and weir combine to form a separator.          In the launder, free water and solids contaminants settle and form a bottom layer of dirty water.  The layer is diverted into the container through the aperture and the weir temporarily retains a small head of it.  Temporary retention in the separator therefore generates a vertical fluid column comprising an upper layer of relatively clean froth and a lower layer of dirty water, said layers having an ascertainable interface.  The elevation of the interface is monitored and contaminated fluid is withdrawn from the container as underflow at a rate controlled to keep the interface  elevation  substantially  constant.     The  froth overflowing the weir is reduced in water and solids relative to the original froth issuing from the flotation vessel.
Patent CA-2056279-C (CA)
Title: Cell-free receptor binding assays, the production and use thereof
Inventor: LAUFFER LEANDER
IPC: C07K16/00
Filed: 1991-11-27
Granted: 2003-11-11
Abstract: The invention relates to cell-free receptor binding assays which permit the binding behavior of receptor proteins in the cell membrane toward natural or artificial ligands to be investigated. This entails the particular receptor being linked to a suitable carrier molecule, preferably the heavy chain of an immuno-globulin, and being bound via the carrier, with retention of its biological property, to a suitable solid phase.
Patent CA-2069059-C (CA)
Title: Movement detector and apnea monitor including same
Inventor: SHTALRYD HAIM
IPC: A61B5/00
Filed: 1992-05-20
Granted: 2003-11-04
Abstract: A movement detector particularly useful as an apnea monitor includes a piezoelectric crystal transducer, a supporting member on one side of the transducer, and a collector member on the apposite side of the transducer and having an effective area, as circumscribed by its outer edges, which is at least fifty times the surface area of the respective side of the transducer, for collecting the forces applied at that side of the transducer and for applying them to the transducer.
Patent CA-2071272-C (CA)
Inventor: ROUDAVITCH GEORGES
IPC: G01L1/04
Filed: 1992-06-15
Granted: 2002-04-23
Abstract: La bielle selon l'invention comprend un premier élément monté axialement coulissant par rapport à un deuxième élément de transmission, avec interposition d'éléments élastiques, la détection du déplacement relatif des deux pièces étant amplifiée par un levier monté basculant sur l'un des deux éléments et sur lequel agit l'autre élément. Ce levier comporte au moins un bras radial articulé sur l'un des éléments et comportant, à distance de l'articulation, des moyens assurant une liaison axiale, dans les deux sens, à l'autre élément, et un bras axial présentant une extrémité libre, de part et d'autre de laquelle sont disposés deux organes de détection. L'invention permet de déterminer le sens de l'effort qui est transmis par la bielle.
Patent CA-2079528-C (CA)
Title: Vacuum operated retrofilling apparatus
Inventor: GROSREY JEAN
IPC: A61C5/04
Filed: 1992-09-30
Granted: 2004-11-30
Abstract: The apparatus comprises a filling nozzle having a conical part so that it can fit in a leaktight manner on to a burred aperture in a tooth to be filled. The nozzle has a suction tube and a first annular channel connected to the suction tube and coming out into the dental cavity in order to create a vacuum therein. A second central channel serves to bring a filling paste from a reservoir to the dental cavity. The cross-section of flow of the first channel is several times smaller than that of the second channel, so that the paste travels much more slowly in the first channel than in the second, under the effect of the partial vacuum in the dental cavity.
Patent CA-2087987-C (CA)
Title: A method for the treatment of wool
Inventor: CONNELL DAVID LONGLEY
IPC: D06M11/32
Filed: 1991-06-26
Granted: 2003-12-16
Abstract: A method for imparting shrink resistance to wool which comprises treating the wool simultaneously with both hydrogen peroxide and permonosulphuric acid or salts thereof. Preferably, the wool is then further subjected to a polymer treatment. The method may be performed either as a continuous process or as a batch process.
Patent CA-2094961-C (CA)
Title: Dual chamber cardiac pacemaker employing hysteresis to maximize the number of normally conducted ventricular beats with an optimum a-v delay for paced ventricular beats
Inventor: HAUSER ROBERT G
IPC: A61N1/368
Filed: 1993-04-27
Granted: 2000-04-18
Abstract: A DDD pacemaker including stimulating means to stimulate the ventricles of a heart after a predetermined A-V delay period includes means for adjusting the A-V delay period to enhance the probability of detecting naturally occurring ventricular depolarization signals when such signals are being detected at a predetermined rate and switching to a more hemodynamically appropriate A-V delay period when paced beats predominate. The invention is implemented in software run on a microprogrammable controller comprising the DDD pacemaker.
Patent CA-2098522-C (CA)
Inventor: JOUNELA SEPPO SAKARI
IPC: B03B9/00
Filed: 1993-06-16
Granted: 2000-11-21
Abstract: The present invention relates to a method for beneficiating nickel sulfide concentrates or other corresponding mixtures, unsuitable for smelting, by combining the use of both pyrometallurgical and hydrometallurgical processes, so that there are formed two separate concentrates, the first of which is suited to pyrometallurgical and the second to hydrometallurgical treatment. In the pyrometallurgical concentrate, the valuable metal content increases as a consequence of the treatment, and the Fe/MgO ratio of this concentrate is at least 2.6.
Patent CA-2098849-C (CA)
Title: Control of gene expression by ionizing radiation
Inventor: WEICHSELBAUM RALPH R
IPC: C12N5/10
Filed: 1991-12-19
Granted: 2007-07-10
Abstract: This invention relates to genetic constructs which comprise an enhancer-promoter region which is responsive to radiation, and at least one structural gene whose expression is controlled by the enhancer-promoter. This invention also relates to methods of destroying, altering, or inactivating cells in target tissue by delivering the genetic constructs to the cells of the tissues and inducing expressing of the structural gene or genes in the construct by exposing the tissues to ionizing radiation. This invention is useful for treating patients with cancer, clotting disorders, myocardial infarction, and other diseases for which target tissues can be identified and for which gene expression of the construct within the target tissues can alleviate the disease or disorder.
Patent CA-2107976-C (CA)
Title: Toothed belt
Inventor: FUJIWARA TORU
IPC: F16G1/28
Filed: 1993-10-07
Granted: 2003-08-19
Abstract: Resistance to tooth chipping in toothed belt in which rubber teeth are covered by a tooth cloth, is improved by providing for residual elongation of the tooth cloth so that it does not float or separate from the rubber teeth when tooth-deforming forces are applied, and by providing the tooth cloth with sufficient breaking strength so that the product of its breaking strength and its elongation are at least equal to a specified value.
Patent CA-2110307-C (CA)
Title: Weapon aiming system
Inventor: WARDELL MARK
IPC: F41A17/08
Filed: 1993-11-30
Granted: 2004-06-29
Abstract: A machine gun unit comprises a machine gun mounted to a support by a mounting permitting pivoting movement of the machine gun relative to the support in azimuth and/or elevation. Angle encoders provide position signals representing angular displacement of the machine gun relative to the support. An aiming system comprises a sensor, for example a CCD sensor, which provides a video signal representing a field of view for the aiming system, a display device for displaying the field of view, a manual input interface, a graphics artifact generator, and a digital signal processor (DSP). The DSP monitors the outputs of the angle encoders and controls the graphics artifact generator to combine the output of the graphics artifact generator with the output of the CCD sensor for display by the display device. Various graphics artifacts can be provided. Masks may be provided for delimiting field of fire. A cursor may be repositioned to reflect superelevation requirements. Target motion and opposing fire can be detected and highlighted. Tracers can be simulated. The weapon can also be used for surveillance, either alone or as part of a weapon system comprising a plurality of the weapons and a central command post.
Patent CA-2110861-C (CA)
Inventor: LEUTWYLER ROBERT
IPC: A46B5/00
Filed: 1993-12-07
Granted: 2005-03-08
Abstract: The invention relates to a toothbrush (10), the brushneck (12) of which, connected to an exchangeable brushhead, is deflectably held, in a reversible, resilient manner, on a hollow handle (14) by a swivel joint (18) surrounded by a sealing element (16). The brushneck (12) is provided at its coupling end (20) facing the handle (14) with an articulated head (22). The handle exhibits at its coupling end (24) facing the brushneck (12) an articulated fork (26), between whose fork legs (28, 30) an articulated head (22) of the brushneck (12) is fitted-in and connected by a swivel axle (32). The sealing element (16) consists of a pressure-elastic material. The articulated fork (26) is itself of tension-elastic configuration, so that the sealing element (16) is held by the articulated fork (26) under elastic pre-tension between the mutually opposite coupling ends (20, 24) of the handle (14) and of the brushneck (12). The toothbrush can be economically manufactured using a least possible number of single parts and enables a deflection movement, which is elastically damped by the sealing element and by the elastically configured articulated fork, which deflection movement is limited by the articulated head.
Patent CA-2116349-C (CA)
Inventor: BOLD JOERG
IPC: B28B1/52
Filed: 1992-08-17
Granted: 1998-06-30
Abstract: The layer of material is roughly distributed on a conveyor belt by an oscillating feed device and smoothed out by a combing device which acts on the whole surface of the material in the direction in which it is being conveyed. From this conveyor belt, the material is dropped on to a second belt where the weight distribution is measured and processed for use in controlling the oscillating feed device.