baber/WOPTO huggingface dataset:
Patent CA-2001847-C (CA)
Title: Procede continu de fabrication de perchlorate de metal alcalin
Inventor: MILLET JEAN-CHRISTOPHE
IPC: C25B15/02
Filed: 1989-10-31
Granted: 1995-08-01
Abstract: Procédé continu de fabrication perchlorate de métal alcalin par électrolyse d'une solution aqueuse de chlorate dudit métal en une seule étape électrolytique avec un électrolyte uniforme et de composition stationnaire, caractérisé en ce que ladite composition est celle d'une solution aqueuse de perchlorate de laquelle celui-ci est isolable directement par cristallisation, maintenue ainsi en faisant entrer en continu dans l'étape d'électrolyse, du chlorate et de l'eau simultanément, chacun en quantité égale respectivement à celle du chlorate et de l'eau qui, en l'état ou sous forme combinée, sortent en continu et définitivement de ladite étape. Ce procédé évite les inconvénients des procédés de l'art antérieur et permet, par exemple, d'obtenir du perchlorate solide de degré de pureté élevé et la quantité d'énergie consommée.
Patent CA-2001907-C (CA)
Inventor: STEPHENS JOSEPH CURTIS
IPC: H04N3/18
Filed: 1989-10-31
Granted: 1999-12-28
Abstract: An input signal at a horizontal frequency is coupled to a deflection circuit through an isolation transformer during a power-on operation but not during a power-off operation. A voltage at a horizontal deflection frequency is developed in a linearity inductor of the deflection circuit. The voltage in the linearity inductor is rectified to produce a rectified signal that is coupled to an input terminal of a regulator oscillator of a power supply. The rectified signal is coupled to the regulator oscillator in an electrically nonisolated manner with respect to electrical shock hazard isolation, and is electrically isolated by the transformer from the input signal. The regulator oscillator generates trigger pulses for controlling the switching operation of an SCR switch of the power supply to produce an output supply voltage that energizes the deflection circuit. The regulator oscillator is energized during both power-up and power-off operation and is responsive to the rectified signal to cause the frequency of the trigger pulses of the oscillator to increase during power-off operation. The increased frequency causes the anode-to-cathode voltage of the SCR switch to be small enough to prevent latching of the SCR switch during the power-off operation. By preventing SCR switch latching, audible parasitic vibrations in the power supply are avoided.
Patent CA-2004744-C (CA)
Inventor: SENZAKI HIROHISA
IPC: H01M4/131
Filed: 1989-12-06
Granted: 1998-02-17
Abstract: Une pile primaire au lithium comprend une matière active cathodique contenant 0,05 à 2,0 parties en poids de phosphore par rapport à 100 parties en poids de dioxyde de manganèse. Une matière active cathodique pour une pile primaire au lithium contient 0,05 à 2,0 parties en poids de phosphore par rapport à 100 parties en poids de dioxyde de manganèse. Une méthode de fabrication de dioxyde de manganèse électrolytique comprend l'addition à l'électrolyte d'au moins un composé choisi dans le groupe constitué de l'acide phosphorique, de l'acide phosphoreux, de l'acide hypophosphoreux et de dérivés de ces derniers durant la fabrication de dioxyde de manganèse électrolytique en utilisant du sulfate de manganèse et une solution d'acide sulfurique comme électrolyte.
Patent CA-2005687-C (CA)
Title: Filter deck assembly sliding seal
Inventor: LUTHI OSCAR
IPC: B01D33/09
Filed: 1989-12-15
Granted: 1997-01-07
Abstract: A  rotary  drum  filter  has  a  plurality  of  longitudinally extending  division grids mounted about the outer circumference of  a  drum.   A  plurality of corrugated sheets are provided, with  the  leading  and trailing edges of each sheet mounted to circumferentially  adjacent  pairs  of division grids to define filtrate  compartments.    An  equivalent  number of perforated filter  plates  are  also  provided.    Each  filter  plate  is attached  to the  top  of a corrugated sheet and has a leading edge  that  is  set  back from the leading edge of the attached sheet.    A  seal  member  is positioned at the leading edge of each  corrugated  sheet  and  has a first leg extending between the  filter  plate  and  the corrugated sheet.  The seal member further  includes  a second leg which abuts the leading edge of the  corrugated  sheet  so  as  to  block  the open ends at the leading edge of the corrugated sheets.
Patent CA-2007371-C (CA)
Title: Safety connection into passages in a tubular body
Inventor: TAYLOR KENNARD W
IPC: F16L55/10
Filed: 1990-01-09
Granted: 1999-03-23
Abstract: A safety connection for connecting a plug  into a tubular member such as in a passage of a choke or valve body, the tubular member having a threaded port extending into the interior of the passage, a plug body positioned within said passage and having an external groove being aligned with the opening of the port into the interior of the passage, a threaded plug positioned within said port, and having an inner end engaging within the external groove in the plug body, sealing means between said plug body and the interior of said passage, means for sealing between the interior of said threaded plug and the threaded port, a vent opening extending through said threaded port and being sealed by the seating of said threaded plug in said threaded port,  the  partial  unthreading  of  said  threaded  plug outwardly in said threaded port opening the vent opening for venting pressure  from within the tubular member while maintaining the inner end of the threaded plug in engagement with the groove in the plug body to retain it in its seated position with the tubular member.
Patent CA-2008357-C (CA)
Inventor: WOLF FRANZ J
IPC: F16F1/36
Filed: 1990-01-23
Granted: 1993-10-12
Abstract: ABSTRACT OF THE DISCLOSURE         For the formation of a particularly soft characteristic curve of the spring, the rubber spring element consisting of a relatively hard and mechanically solid material is so interspersed with hollow spaces and hollow ducts intersecting same that the area of the inside cross section of the hollow ducts is at least 25% of the area of the nearest hollow space interspersed by said hollow duct, the hollow ducts being capable of directly intersecting in the rubber matrix.
Patent CA-2009472-C (CA)
Title: Format converting system for synchronous optical network
Inventor: EDA HITOSHI
IPC: H04J3/00
Filed: 1990-02-07
Granted: 1993-12-07
Abstract: ABSTRACT OF THE DISCLOSURE          A format converting system includes a first converter which converts an input signal into N parallel signals (N is an integer).  Each of the N parallel signals has a bit rate less than that of the input signal.  A latch circuit temporarily latches the N parallel signals in accordance with a clock signal and outputs a plurality of latched signals having a number larger than the N.  A selector selectively outputs the latched signals from the latch circuit and stuff bits to be inserted into the N parallel signals in accordance with a control signal so that N parallel output signals having the N parallel signal and the stuff bits are output from the selector.  The stuff bits are used for converting a frame format of the input signal into a different frame format.  A control circuit generates the clock signal and generates the control signal which instructs the selector to change an order of selecting the latched outputs and the stuff bits to thereby form the N parallel output signals when the number of the stuff bits to be inserted into the N parallel signals is not an integer multiple of N.  A second converter converts the N parallel output signals into a serial output signal having the different frame format.
Patent CA-2012636-C (CA)
Title: Packaging containers
Inventor: ASTON STEPHEN CHARLES
IPC: B65D5/54
Filed: 1990-03-20
Granted: 2000-01-04
Abstract: The invention provides a packaging container which is formed from a blank of cut and creased sheet material. The container is rectilinear in nature and is sealed. It has a flip top lid which is opened by engaging a tear tab with the finger and by removing a tear strip to release the flip top lid to gain access to the contents.
Patent CA-2015583-C (CA)
Inventor: TRAWINSKI JURGEN
IPC: C12N5/071
Filed: 1990-04-27
Granted: 2002-06-25
Abstract: An improved method of inoculating large scale fermenters with mammalian cells is provided. Instead of taking one or more ampules of frozen cells through a series of scale up steps in tissue culture flasks and/or roller bottles, the cells are inoculated into a small fermenter in advance of their anticipated usage in fermenter inoculation. The cells are concentrated and dispensed into approximately 500 ml aliquots (or larger) and mixed with a cryopreservative solution. The aliquots are frozen in liquid nitrogen in specially designed freezer bags. The cells can thus be held indefinitely. When a fermenter run is to be initiated, a cell bag can simply be thawed and inoculated into the fermenter. Because the cells have been previously adapted to the fermenter medium, cell growth and production begin almost immediately after inoculation.
Patent CA-2018701-C (CA)
Title: Method for one-side root pass welding of a pipe joint
Inventor: SUGITANI YUJI
IPC: B23K9/09
Filed: 1990-06-11
Granted: 1994-07-05
Abstract: ABSTRACT OF THE DISCLOSURE A method for one-side root path welding of a pipe joint comprises  the  steps  of  forming  a  ring  groove  having  a V-shaped bottom portion thereof at end faces of both pipes whose joint is circumferentially welded, attaching a backing material  to a butt portion of the pipes from an  internal side of the  pipes,  running an  automatic welding  machine along a guide rail mounted on an outer surface of the pipes in  the  circumferential  direction  thereof,  controlling  a position of a welding torch along a seam by means of an arc sensor,  and welding root pass from the outer side of the pipes with a predetermined welding current and at a welding speed in a high-speed rotating arc welding of the pipes at a predetermined  rotational  speed  and  with  a  predetermined diameter of rotation.   The rotational speed of arc is from 10 to 150 Hz.  The rotation diameter of the arc is from 1 to 4 mm.   The welding current is from 200 to 500 A.  The welding speed is from 75 to 300 cm/min.
Patent CA-2020179-C (CA)
Title: Asphalt blends with chloroprene polymers or copolymers thereof with dichlorobutadiene
Inventor: CHRISTELL LANCE A
IPC: C08L95/00
Filed: 1990-06-29
Granted: 2001-11-27
Abstract: Blends of asphalt and 0.1 to 5 weight percent of a chloroprene polymer are disclosed. The chloroprene polymers can contain up to 12 weight percent 2,3-dichlorobutadiene-1,3 a vinyl monomer or mixtures thereof. The chloroprene polymers are mercaptan-modified or dialkyl- or dialkoxy xanthogen disulfide-modified chloroprene polymers having a gel content of 10 to 50 weight percent and preferably from 20 to 40 weight percent.
Patent CA-2023963-C (CA)
Inventor: YAMAGAMI TAMOTSU
IPC: G11B7/004
Filed: 1990-08-24
Granted: 1999-07-20
Abstract: An optical recording medium for storing optically readable data includes at least one preformed recording track of predetermined width and extending in a predetermined recording direction, the recording track having a recordable region extending in the recording direction thereof for recording data containing clock signal components, the recording track being provided with predetermined offset portions extending in the direction of the width thereof representing offset recorded data, the offset portions being formed such that the offset recorded data has a frequency upon scanning the recording track related by an integral ratio with respect to the clock signal components of the data.  When principal information signals are recorded on the track of the recording medium, clock signals are produced with the use of the offset recorded data and, when the principal information signals are reproduced from the recording medium, the offset recorded data are used for accessing, so that record and reproduce clocking may be produced from signals wholly apart from the principal information signals recorded in the recording track.  In addition, by providing offset portions of the recording tracks, it is possible to record information outside of the recordable region of the recording track.  In one embodiment, the phases of clock components of the principal information signals are recorded therewith so that when these signals are reproduced, a phase locked loop produces reproduced clocking signals having a frequency based upon the offset data signals and a phase determined by the signals recorded in the recordable region.  This serves to reduce the time required for frequency and phase capturing and eliminates the need to provide a lengthy clock capturing preamble region in the recording track.
Patent CA-2028723-C (CA)
Title: Hydraulic running and release tool with mechanical emergency release
Inventor: BAKER SAMUEL FRED
IPC: E21B23/06
Filed: 1990-10-29
Granted: 1998-04-28
Abstract: A hydraulic running and release tool includes a mandrel,  outer sleeve,  latch nut and piston which may be hydraulically or mechanically actuated to release the tool from a tubular member after it has been positioned in a well bore.   The latch nut and piston are releasably connected together by a shear member between the outer sleeve and the mandrel and the latch nut is releasably connected to a tubular member, with the piston positioned adjacent the releasable connection between the latch nut and tubular member to prevent premature disconnection of the latch nut from the tubular member.  To release the hydraulic tool, fluid pressure through a port in the mandrel from the well string acts on the piston to shear the member that connects the piston to the latch nut so that the piston shfits away from the releasable connection.          After the piston is shifted hydraulically, it reconnects to the  latch  nut  whereupon  the  piston  and  latch  nut  may hydraulically thereafter be shifted longitudinally together to disconnect the latch nut from the tubular member for retrieval of the tool including the mandrel, outer sleeve, latch nut and piston from the well bore.  If a malfunction occurs with the hydraulic release, rotation may be imparted to the mandrel which is in turn imparted to the latch nut by engaged splines on the mandrel and latch nut for rotating the latch nut to disconnect it from the tubular member for retrieval of the tool including the outer sleeve, mandrel, latch nut and piston from the well bore.
Patent CA-2035716-C (CA)
Title: Private branch exchange system
Inventor: SANO TOSHIYUKI
IPC: H04M3/46
Filed: 1991-02-05
Granted: 1995-04-11
Abstract: A private branch exchange system having a call forward busy function wherein, when a busy incoming-call destination terminal receives a further incoming call, the further incoming call is informed to both of the busy incoming-call destination terminal and a forwarding destination terminal previously set for the busy incoming-call destination terminal.   Since a response opportunity to the further incoming call is provided even when the initially-intended incoming-call destination terminal is busy, the response opportunity of the busy incoming-call destination terminal and the forwarding destination terminal to the incoming call can be increased and therefore an incoming-call response rate of the entire system based on the call forward busy function can be increased.
Patent CA-2036085-C (CA)
Title: Trim lip for a weather seal
Inventor: LARSEN DOUGLAS C
IPC: B60J10/08
Filed: 1991-02-11
Granted: 2001-04-03
Abstract: The present invention is a weather seal adapted to be secured on a flange of a vehicle to seal a gap between the flange and a panel member. The weather seal includes retaining members for retaining the weather seal on the flange and a separate trim lip for sealing the gap between the flange and panel member. The weather seal also includes an attachment portion receiving one end of the trim lip to removably secure the trim lip to the weather, seal and allow accurate positioning of the trim lip to seal the gap when the weather seal is secured to the flange.
Patent CA-2047762-C (CA)
Title: Solids-liquid separation
Inventor: GOYAL SHRI KRISHAN
IPC: B01D36/00
Filed: 1991-07-19
Granted: 1997-04-15
Abstract: A method and a system for separating solids from a solids-containing liquid feed is disclosed wherein ultrasonic energy is applied to a fouled separation element in situ in the separator unit associated with the element while the element is immersed in a liquid to effect removal therefrom of solids fouling the element and wherein the separation element is backflushed with a backflush liquid.
Patent CA-2049363-C (CA)
Title: Liquid aerating apparatus
Inventor: WISEBURGH PETER
IPC: A23L2/54
Filed: 1991-08-16
Granted: 1999-05-25
Abstract: An apparatus for aerating liquids contained in bottles comprises safetymeans for detecting any irregularity in the shape and/or dimensions of the bottle and preventing undesired pressurization of a bottle having such irregularities.
Patent CA-2050317-C (CA)
Title: Method and kit for determining tyrosine-phosphorylating and dephosphorylating activities
Inventor: RIJKSEN GERRIT
IPC: C07K16/18
Filed: 1990-03-02
Granted: 2002-05-07
Abstract: A safe and sensitive method is provided for determining the tyrosine-phosphorylating or phosphotyrosine-dephosphorylat-ing activity of a material, such as a human tissue sample, by reacting the sample with a polypeptide which contains (phospho)tyr-osine residues and assaying the phosphorylated polypeptide by using an antibody to a polypeptide containing phosphotyrosine. the method can conveniently be performed using a diagnosis kit containing the polypeptide and the antibody. The method and the kit are useful for example for diagnosing tumours.
Patent CA-2054513-C (CA)
Title: Constant frequency resonant dc/dc converter
Inventor: JAIN PRAVEEN K
IPC: H02M3/337
Filed: 1991-10-30
Granted: 1997-08-19
Abstract: A constant frequency full resonant mode dc/dc converter is provided, suitable for use in low voltage, high current dc power distribution systems. The converter comprises a full-bridge inverter, a resonant circuit, an output transformer, an output diode rectifier, a dc output filter, and a controlcircuit. The resonant circuit consists of a series branch and a parallel branch.The components of the resonant circuit are selected such that a sinusoidal voltage waveform is achieved across the parallel branch, and an overall lagging current is obtained at the output of the full-bridge inverter for a desired range of output voltage control and no-load to full-load operating conditions.
Patent CA-2055708-C (CA)
Title: Roofing washer
Inventor: THOMAS LOUIS
IPC: F16B43/00
Filed: 1991-11-15
Granted: 1995-05-30
Abstract: A roofing washer useful with a fastener having a head and a shank, such as a roofing screw, and provided with an annular lip to restrain the head after the head has been driven past the annular lip.  As molded from a resilient, polymeric material, the roofing washer has a plurality of discrete cavities, which facilitate radial expansion of the annular lip, and a plurality of discrete ribs, which separate the discrete cavities.  In one possible embodiment, each cavity has an inner, generally cylindrical wall, an outer, generally cylindrical wall, and two end walls, each defining a plane oriented at an acute angle relative to a radial plane.  In a different embodiment, each cavity has two planar walls and a curved wall.
Patent CA-2056330-C (CA)
Title: Method of fabricating a complex part made of composite material
Inventor: DUBLINSKI ALEXANDER C
IPC: B29B15/08
Filed: 1991-11-27
Granted: 2003-06-10
Abstract: The method of fabricating a complex part made of composite material and having a plurality of panels oriented in diverse angular relationship, and utilizing a plurality of conformable cauls upon which the com-posite material is individually laid up and which cauls cooperate to form one of the molds used in the cocuring of the individually laid-up composite materials.
Patent CA-2061717-C (CA)
Title: Neutralizing amines with low salt precipitation potential
Inventor: LEHRER SCOTT E
IPC: C10G7/10
Filed: 1992-02-24
Granted: 2003-09-02
Abstract: A process for adding an amine having a pKa of between and 8 to a petroleum refinery distillation unit for the purpose of neutralizing acidic species contained in the hydrocarbon feedstock. The use of these amines raises the dew point pH sufficiently to prevent corrosion of the metallic surfaces of the overhead equipment while reducing the potential for the precipitation of amine salts.
Patent CA-2061844-C (CA)
Title: Water lock method and apparatus
Inventor: WESTHOFF JAMES A
IPC: E02D29/14
Filed: 1992-02-25
Granted: 2000-04-25
Abstract: A watertight chimney assembly prevents infiltration of water in the region between a manhole cover support frame and a concrete manhole assembly. The watertight chimney is comprised of a pair of telescoping sleeves each provided with a flange for mounting respectively to the top lip of a manhole assembly and the bottom surface of the flange on the cover frame a desired distance above the top of the manhole assembly to maintain the cover frame at proper grade. An O-ring seated within an annular groove provided in one of the tubular members provides a sliding watertight seal therebetween. The sleeve flanges are compressed between the frame and manhole assembly and contribute to the watertight seal. One of the sleeves is reversible to increase the telescoping range between a minimum and a maximum extension. In an alternative embodiment, the internal surface of the manhole opening constitutes one of the telescoping members. A sealing gasket may be arranged on either of the two telescoping members and may be seated within a groove or clamped against the manhole opening. The sealing gasket may be any one of a variety of cross-sectional configurations and can be inflatable, if desired. As another alternative embodiment, an anchoring flange of one of the telescoping sleeves may be embedded into the manhole opening. The cast-in sleeve may be formed of a resilient material and is clamped to the cooperating telescoping member.
Patent CA-2062284-C (CA)
Title: Plant protection device
Inventor: MORASIEWICZ KATHLEEN
IPC: A01G13/02
Filed: 1992-03-04
Granted: 1996-07-30
Abstract: Plants  during  an  initial  growth  period  are protected by a plurality of plastics drinks bottles arranged in a pattern surrounding an area in which the plant is growing.          The drinks bottles are engaged by a locating device in the form of a flat sheet with a plurality of openings therein with each bottle being inserted into an opening to engage the locating device to hold the bottles in the pattern surrounding the area.          The  locating  device  is a central opening through which the plant can grow and a generally circular outer peripheral edge.
Patent CA-2065434-C (CA)
Title: Pyrrolo[2,3-d]pyrimidine derivatives, process for producing the same and pharmaceutical preparation comprising the same as active ingredient
Inventor: SAKUMA YASUJI
IPC: C07D519/00
Filed: 1990-09-19
Granted: 1999-11-30
Abstract: A pyrrolo[2,3-d]pyrimidine derivative having the general formula [I] (see formula I) wherein R1, R2, R3, R4, R5, Y and Z have the same definitions as those given in the description, a pharmaceutically acceptable acid addition salt thereof, and a pharmaceutical preparation comprising the same, are provided.