baber/WOPTO huggingface dataset:
Patent CA-2001505-C (CA)
Inventor: JAKOBSSON LEIF
IPC: F24H7/04
Filed: 1989-10-23
Granted: 1994-12-06
Abstract: A heat exchanger system having an improved heat accumulator or heater block is disclosed for utilizing off-peak electrical power.  The heater block utilizes a high thermal conductive material having electric heater wires embedded therein.          Passageways extend through the heater block and heater fluid tubes are located in the passageway and carries heat transfer fluid through the heater block.  A packing material is located between the side walls of these tubes and the walls of the passageway wherein the packing material has a suitable thermal expansion coefficient whereby when the block is heated the packing material can compensate for the difference in expansion between the block and the heater fluid tube thereby avoiding cracking of the fluid tube and heater block.  Liquid circulation pumps are included and the heater block is in fluid communication with various heat exchangers for heating applications such as heating rooms.  The heater block can be heated up to about 850°C and the heater block power supply is coupled to a clock so that the heat exchanger can be operated at those off-peak periods during the day when excess utility power is available.  The pipes in the accumulator are shaped and dimensioned to withstand high thermal stress and to provide a steam-cover or gas-lock when the circulation pumps are off.  The fluid circulation pumps are controlled in such a way that no fluid is circulated through the system until the fluid in the heater block has been heated to a predetermined temperature.
Patent CA-2012886-C (CA)
Inventor: FREMAUX JACQUES
IPC: F24F1/00
Filed: 1990-03-22
Granted: 2001-01-02
Abstract: The invention concerns a heating window using the parietal-dynamic effect. 
<??>The opening frame of a conventional window (22) is fitted with an inner heating over-glazing (9, 10). Air (24, 25) circulates between the glazing of the opening frame and the over-glazing. It penetrates from the exterior through aperatures in the lower section of the opening frame and then emerges into the interior of the room from the upper section. 
<IMAGE>
Patent CA-2016453-C (CA)
Title: High emulsifier content explosives
Inventor: MULLAY JOHN J
IPC: C06B47/14
Filed: 1990-05-10
Granted: 2000-01-18
Abstract: The present invention relates to water-in-oil emulsion explosive compositions comprising a discontinuous aqueous phase, a continuous water-immiscible organic phase, and an emulsifier content being at least 45% by weight of the emulsified fuel phase which decreases precompression or dead pressing.
Patent CA-2019235-C (CA)
Inventor: HARRIS DONALD L
IPC: E05D15/06
Filed: 1990-06-18
Granted: 1999-08-31
Abstract: A multi-directional track and trolley system for movably supporting wall panels in which the track includes spaced track flanges forming a track slot and at least one track intersection having a curved track element with a curved edge and the trolley includes radial support wheels rotatably mounted in laterally spaced tandem pairs on a plate, frame or rigid trolley body far rotation about spaced parallel horizontal axes. The trolley is provided with guide rollers adjacent each end thereof and a centrally disposed panel supporting member which depend from the trolley body and are positioned in the track slot with the guide rollers mounted for rotation about generally vertical axes to guide the trolley. The diameter of and distance between the guide rollers, the radius of the curved edge of the track intersection and the diameter of the supporting member are related to prevent the supporting member from coming into contact with the curved edge of the track intersection when the trolley moves through the track intersection whereby the trolley entering the intersection from one direction can exit from the intersection in any of at least two directions without stopping while changing its direction of travel.      To combine the multi-directional track and trolley system with a preprogrammed system, diverter pins are provided on the trolley and are associated with diverter blades at diverter intersections to assure that the trolleys and thus the wall panels will always follow the same route through the diverter intersections.
Patent CA-2023803-C (CA)
Inventor: OKAMOTO TADASHI
IPC: G01N33/546
Filed: 1990-08-22
Granted: 1999-05-18
Abstract: There are provided a method and an apparatus for measuring an immunologically active material by physically or chemically immobilizing material immunologically active to a material to be measured of a specimen to the dehydrated solid fine particles, providing a desirable dispersion comprising said immunologically active material immobilized to said solid fine particles and said specimen in a liquid medium, reacting them to cause a reaction mixture in an agglutinated state and optically measuring said agglutinated state of the reaction mixture to thereby quantitatively determine the content of said material to be measured with an improved accuracy.
Patent CA-2024845-C (CA)
Title: Multi-peak speech processor
Inventor: SELIGMAN PETER M
IPC: H04R25/00
Filed: 1990-09-07
Granted: 1994-08-02
Abstract: ABSTRACT           An improved pulsatile system for a cochlear prosthesis is disclosed.  The system employs a multi-spectral peak coding strategy to extract a number, for example five, of spectral peaks from an incoming acou-stic signal received by a microphone.  It encodes this information into sequential pulses that are sent to selected electrodes of a cochlear implant.  The first formant (F1) spectral peak (280-1000 Hz) and the sec-ond formant (F2) spectral peak (800-4000 Hz) are en-coded and presented to apical and basal electrodes, respectively.  F1 and F2 electrode selection follows the tonotopic organization of the cochlea.  High-fre-quency spectral information is sent to more basal electrodes and low-frequency spectral information is sent to more apical electrodes.  Spectral energy in the regions of 2000-2800 Hz, 2800-4000 Hz, and above 4000 Hz is encoded and presented to three fixed elec-trodes.  The fundamental or voicing frequency (F0) determines the pulse rate of the stimulation during voiced periods and a pseudo-random aperiodic rate determines the pulse rate of stimulation during un-voiced periods.  The amplitude of the acoustic signal in the five bands determines the stimulus intensity.
Patent CA-2026809-C (CA)
Title: Haloperoxidase acid optimum chemiluminescence assay system
Inventor: ALLEN ROBERT C
IPC: C12Q1/28
Filed: 1990-10-03
Granted: 2003-12-16
Abstract: A highly sensitive chemiluminescent indicator system is disclosed for determining the presence or amount of an analyte in a liquid sample. The new acid optimum chemiluminescent indicator system comprises haloperoxidase (halide:hydrogen peroxide oxidoreductase), halide, oxidant and chemiluminigenic substrate. The indicator system acts as a synthesizer of highly reactive singlet molecular oxygen (1O2), which reacts with the chemiluminigenic substrate to yield an excited state, oxidized reaction product. The excited state reaction product then relaxes to a lower energy (e.g., ground) state with the emission of measurable light in an amount related to the amount of each of the reaction participants present in a reaction solution. Known, non-rate limiting amounts of three of the reaction participants are provided in an assay solution to determine the presence or amount of the fourth participant in a test sample. The fourth participant in the test sample may be the analyte of interest, or may be produced or consumed in the test sample through one or more preliminary reactions involving the ultimate analyte of interest, with the amount of the fourth participant being related to the amount of analyte in the test solution. Accordingly, the indicator system of the invention may be employed for the determination of a wide variety of analytes.     The indicator system operates most efficiently over the range from acid to slightly basic pH, e.g., at a pH of about 3 to about 8. Also described is a variety of illustrative assay formats in which the indicator reaction of the invention may be employed, as well as kits for use in carrying out assays utilizing the haloperoxidase/halide/oxidant/substrate indicator system.
Patent CA-2027402-C (CA)
Title: Pretreating composition containing s-triazine compound
Inventor: GRAY RALPH C
IPC: C23F11/14
Filed: 1990-10-11
Granted: 1999-03-16
Abstract: Disclosed herein is an aqueous composition containing an S-triazine compound having at least one hydroxyl group composition adapted for use in pretreating a ferrous or non-ferrous metal surface.
Patent CA-2028769-C (CA)
Title: Glassmelting method with reduced nox generation
Inventor: KOBAYASHI HISASHI
IPC: C03B3/02
Filed: 1990-10-29
Granted: 1995-12-12
Abstract: A glassmelting method wherein glassforming materials are preheated prior to entering the melting vessel by direct contact with combustion products from the melting vessel produced by combustion carried out with pure oxygen or oxygen-enriched air.
Patent CA-2032875-C (CA)
Inventor: DAVIDSON JAMES A
IPC: A61F2/00
Filed: 1990-12-20
Granted: 2001-10-02
Abstract: A biocompatible titanium alloy with low elastic modulus containing titanium, about 10-20 wt.% or 35 to about 50 wt.% niobium and upto 20 wt.% zirconium useful for fabricating of orthopaedic implants. This invention relates generally to high strength, biocompatible alloys suitable for use as a material ~or a medical prosthetic implant and, in particular, a titanium ally which has a relatively low modulus of elasticity (eg. closer to that of bone than other typically-used metal alloys) and dogs not include any elements which have been shown or suggested as having short term or long term potential adverse effect from a standpoint of biocompatibility.
Patent CA-2039447-C (CA)
Title: Injection device for injecting articles into trees and a method of treating same
Inventor: DUFF MICHAEL
IPC: A01G23/00
Filed: 1991-03-28
Granted: 1999-07-13
Abstract: There is disclosed an apparatus and method for treating trees.  The apparatus includes an injecting device for injecting articles into trees. The device provides a plurality of article retaining tubes fixedly connected to a removable and rotatable delivery head and stationary therewith.  A slidably mounted injection member is provided which slides coaxially along the tubes from a non-injecting position to an injecting position for injecting an article into a tree.
Patent CA-2040554-C (CA)
Inventor: JOHNSON JAMES C
IPC: H05B41/285
Filed: 1991-04-16
Granted: 1996-09-17
Abstract: An emergency lighting system operable on line voltage under normal conditions and on battery power upon failure of line voltage, the system comprises a battery, a battery charging circuit, a line monitor, a lamp/ballast interface and a switching transistor inverter circuit in addition to all electric discharge lamp, ballast and conventional associated circuitry as well as mechanical packaging and connections to line voltage. Advantages in installation and operation of the present emergency lighting system occurs through use of the switching transistor inverter circuit which starts and operates the discharge lamp from the battery on line voltage failure. The emergency lighting system of the invention is rapidly installable through wiring of an associated lighting fixture to the system using power input leads to conventional ballast, thereby substantially simplifying installation of the inverter circuit.
Patent CA-2043693-C (CA)
Title: Method of steam injection profiling with unstable radioactive isotopes
Inventor: MAGNANI CHARLES F
IPC: E21B47/10
Filed: 1991-05-31
Granted: 1995-05-30
Abstract: A method of determining relative liquid and vapor phase steam profiles in a steam injection well utilizes an unstable radioactive isotope.  A dual detector gamma ray logging tool is inserted into the well at a depth below the perforation zone.  The unstable radioactive isotope is then injected into the steam flow, and it naturally hydrolyzes from a vapor phase into a liquid phase at a known rate, so that at a given time after injection, the relative proportions of the vapor phase and the liquid phase can be determined.  The transit times of the vapor and liquid phases to pass between the gamma ray detectors is measured and the above steps are then repeated at a second location. The amount of fluid entering a formation between the first and second locations can the be determined.
Patent CA-2044493-C (CA)
Inventor: CERF MARTINE
IPC: C07F9/165
Filed: 1991-06-13
Granted: 1997-03-18
Abstract: Compounds represented by the formulae (I) and (II) in which:     R<1> = H, CH3;   X = O, S; R<2> = C1-12 linear or branched alkylene, mono- or polycyclic heterocycloalkylene and cycloalkylene, or arylalkylene and alkylarylene groups;   R<6> = H or C1-12 alkyl and aryl radicals; R<3> = C1-20 alkyl and aryl radicals, -(CH2)pSR<4> groups with p = integer from 2 to 12 and R<4> = C1-20 alkyl, and the groups <IMAGE>     q integer from 2 to 12 and R<5> = H, CH3.   <IMAGE>
Patent CA-2048888-C (CA)
Inventor: GIANNESINI JEAN-FRANCOIS
IPC: E21B43/01
Filed: 1991-08-09
Granted: 1998-08-04
Abstract: La présente invention concerne une installation et une méthode permettant d'exploiter des gisements pétroliers secondaires dont les capacités individuelles de production sont insuffisantes pour justifier de l'investissement dans les dispositifs classiques d'exploitation pétrolière. - L'installation selon l'invention comporte en combinaison avec une plate-forme principale équipée des moyens de production habituels, un support flottant munie d'un système de pompage permettant le transfert des effluents pétroliers, des moyens d'ancrage connectant ledit support flottant au fond de la mer, de premiers moyens de transfert des effluents entre lesdits gisements et ledit support flottant, et des seconds moyens de transfert des effluents entre ledit support flottant et ladite plate-forme principale, lesdits seconds moyens de transfert reposant sur le fond marin. - La méthode selon l'invention se caractérise en ce que l'on utilise les capacités de production disponibles de la plate-forme principale pour le traitement des gisements secondaires, les effluents étant remontés depuis le gisement jusqu'au support flottant à l'aide d'un système de pompage et à l'aide de premiers moyens de transfert, avant d'être envoyé vers la plate-forme principale a l'aide des seconds moyens de transfert sans séparation de leurs constituants. - Application à l'exploitation de gisements pétroliers secondaires.
Patent CA-2049262-C (CA)
Title: Insect repellents
Inventor: SHONO YOSHINORI
IPC: A01N31/06
Filed: 1991-08-21
Granted: 2001-08-28
Abstract: An insect repellent comprising as an active ingredient a monoterpenediol compound having the formula, (see formula I) wherein R1, R2 and R3 have either one of the following definitions: (i) all of R1, R2 and R3 are hydrogen, (ii) R1 is hydrogen and R2 and R3, taken together, form a carbon-carbon single bond, or (iii) R2 is hydrogen, R1 and R3, taken together, form a carbon-carbon single bond, and the hydroxyl bonded to the carbon atom marked with an asterisk takes an .alpha.-con-figuration.
Patent CA-2049298-C (CA)
Inventor: VARADY LASZLO
IPC: B01J20/32
Filed: 1991-01-16
Granted: 1996-02-20
Abstract: Disclosed are pellicular materials useful in contact with proteins and as chromatography media. Rigid, inert, hydrophobic, polymeric materials are exposed to a solution comprising a solute defining plural interspersed hydrophobic and hydrophilic domains.  The solute molecules adsorb onto the surface of the substrate by hydrophobic - hydrophobic interaction with their hydrophilic domains extending outwardly away from the surface into the solution. The molecules are then crosslinked in place to produce a solvent and pH resistant coating which presents a hydrophilic surface sufficient to mask hydrophobic regions therebeneath.  The multidomain adsorbing compounds may comprise reactive groups which subsequently can be derivatized using conventional techniques to produce chromatography materials useful for conducting affinity, size exclusion, cationic exchange, anionic exchange, neutral hydrophobic interaction, and other forms of chromatographic separations.
Patent CA-2050241-C (CA)
Title: Heterocyclic-amine aldehyde reaction products useful for the suppression of hydrogen sulfide
Inventor: O'BRIEN TIMOTHY J
IPC: C07D307/14
Filed: 1991-08-29
Granted: 1997-11-18
Abstract: The reaction product of a heterocyclic aldehyde (such as furfural) and a specified amine (such as diethylene triamine) is effective as an H2S suppressant for water and hydrocarbons.
Patent CA-2051310-C (CA)
Title: Pyrazoloquinoline derivatives
Inventor: SUZUKI FUMIO
IPC: C07D471/04
Filed: 1991-09-13
Granted: 2001-04-10
Abstract: A pyrazoloquinoline derivative having the formula (I):    (I) wherein R1, R2, and R3 independently represent a hydrogen atom or a lower alkyl group; R4 represents a hydrogen atom, a lower alkyl group, a halogen-substituted lower alkyl group, or a lower alkoxycarbonyl group; the dotted line means that the pyrazole ring has two conjugated double bonds; and R4 is bonded to the nitrogen atom at the 1-position or 2-position, or pharmacologically acceptable salts thereof. These compounds exhibit excellent anti-inflammatory activity and hepatic insufficiency treating activity.
Patent CA-2051522-C (CA)
Inventor: AHLSKOG CHRIS
IPC: H05K5/03
Filed: 1991-09-17
Granted: 1998-09-22
Abstract: A  cover  assembly  for  a  control  station includes a substantially rectangular open ended first box having a first panel,  a second panel, a third panel and a fourth panel,  the panels being connectable sequentially to form the first box and defining first and second open ends  the first box being shaped to fit the control station. The box is provided with at least one substantially rectangular cover hinged to the first box to form a cover for the first open end. A first seal connected around the inner periphery of one of the first box and the cover forms a seal between the first box and the cover. A second seal connected around the inner periphery of the first box forms a seal between the first box and the control station. A readily releasable latching mechanism is provided for securing the first box to the control station.
Patent CA-2066599-C (CA)
Inventor: SMYTH PETER PAUL
IPC: H04B10/67
Filed: 1990-09-13
Granted: 1996-07-30
Abstract: An optical detector for use in detecting digital optical signals has an optical fibre coupler (2) which splits a received optical signal into two signal portions. The coupler (2) has unequal length output fibres (8, 10) so that one signal portion impinges an as-sociated photodetector (12, 14) delayed relative to the other. The photodetectors (12, 14) are connected in series non opposed. When the delay is equal to the bit period of the optical signal the output of the detector is the differential code (dicode) of the re-ceived signal which can be recovered by a high input impedance, i.e integrating, amplifier. By forming the dicode in the optical domain in this manner large DC and AC dynamic ranges are obtained without linearity constraints on the optical transmission source that apply when the optical signal is transmitted as a dicode.
Patent CA-2067134-C (CA)
Title: Procedure for storing red cells with prolonged maintenance of cellular concentrations of atp and 2,3 dpg
Inventor: MERYMAN HAROLD T
IPC: A01N1/02
Filed: 1990-10-09
Granted: 2001-02-13
Abstract: This invention provides an improved method for prolonging the shelf life of transfusible red blood cells by decreasing the effective osmolality of the suspending solution and increasing the intracellular pH of the cells prior to storage thereof. This invention also provides methods whereby the intracellular pH may be increased.  These methods include collecting the cells in an anti-coagulant at pH 7.0 or higher and/or washing, diluting or resuspending the cells prior to storage thereof in a biologically compatible buffered solution that contains at least one non-penetrating or substantially non-penetrating anion or non-electrolyte and is substantially free of chloride ions.
Patent CA-2068815-C (CA)
Title: Optical switching system
Inventor: GRIMES GARY JOE
IPC: H04Q9/00
Filed: 1992-05-15
Granted: 1997-06-17
Abstract: An optical switching unit requiring no optical-to-electrical conversions on optical data paths being switched through the optical switching unit. The optical switching unit receives optical data information from one terminal and switches it to another terminal. The optical switching unit frame synchronizes the data transmission timing of the terminals in accordance with the data transmission timing of the optical switching unit. This frame synchronization eliminates the need toprovide data buffering and frame synchronization in the optical switching unit. The optical switching unit comprises an optical network, system clock, optical inputinterfaces for receiving information from terminals, and optical output interfaces for transmitting information to terminals. The system clock determines the timing ofeach terminal using information transmitted to an optical input interface by theterminal. If the timing of a terminal does not match that of the system clock, the system clock blocks the transfer of data information by the optical input interface to the optical network and transmits timing information to the terminal via an optical output interface. If the timing matches, the system clock signals the optical input interface to communicate the data information to the optical network which switches the data information to optical output interfaces for transmission to terminals.
Patent CA-2069620-C (CA)
Title: Method and apparatus for preparation of solutions from concentrates
Inventor: SENNINGER MARK
IPC: A61M1/14
Filed: 1991-09-27
Granted: 2001-04-10
Abstract: An apparatus (10) for proportioning solutions from at least first and second constituent solutions connected to separate inlet ports (26) of the apparatus (10) first detects which constituent solution is being supplied to which port and then properly proportions the finished solution from the constituent solutions irrespective of which constituent solution is connected to which inlet port.
Patent CA-2069734-C (CA)
Inventor: KLEMP MARK
IPC: G01N30/40
Filed: 1991-09-27
Granted: 1997-12-23
Abstract: On décrit un appareil (10) et des méthodes de chromatographie en phase gazeuse qui permettent de réaliser des analyses par chromatographie en phase gazeuse plus rapidement que les techniques antérieures et qui préviennent également le masquage des pics chromatographiques correspondant à des substances d'intérêt, par superposition de ces pics à des pics intenses et de longue durée correspondant à d'autres constituants d'un mélange organique.  L'inversion de la direction du courant dans la colonne (32) au moment de l'élution ou juste après l'élution d'un pic de haute intensité et de longue durée correspondant à certains constituants du mélange, ce qui entraîne le retour dans la chambre de focalisation thermique (14) des constituants qui restent et leur réinjection ultérieure, constitue un aspect principal de l'invention.  On peut, en arrêtant le processus à ce point, réduire la concentration des matières donnant un pic intense et de longue durée qui ont éluées, ce qui permet, après réinjection ultérieure, de déceler dans le chromatogramme des caractéristiques d'intérêt qui, autrement, auraient été masquées.