baber/WOPTO huggingface dataset:
Patent CA-1286000-C (CA)
Title: Predictive clock recovery circuit
Inventor: ABBIATE JEAN-CLAUDE
IPC: H04L7/033
Filed: 1988-09-01
Granted: 1991-07-09
Abstract: ABSTRACT            Predictive clock extracting circuit which having means for determining the duration between two consecutive transitions of a multilevel digital signal, and means for generating a pulse SPL at half the said duration after a the transition following on two consecutive previous transitions. A phase locked oscillator driven by said SPL pulse generates the extracted clock signal, in phase with pulse SPL and which coincides with the  center of the eye  intervals of  said multilevel  digital  signal.  The  system  includes  a  first counter N which starts running in response to the detection of the first transition of the multilevel digital signal.          The running stops when the second transition occurs,  the result N(i)  stored  into  the  first  counter  N  at  second transition  is  therefore  representative  of  the  duration between the two consecutive first and second transitions. A divide by 2 circuit divides the result N(i) stored into the first counter at second transition. The preferred embodiment of the invention also involves an an up/down counter which generates  a  second  counter  K  that  is  expected  to  be representative of half the value of the first counter N(i).          This second counter K is used to generate the extracted clock in phase with the middle of the eye intervals. Counter K is adaptively updated by incrementing its current value K(i) by a fixed factor or, on the contrary, by decrementing its  current  value  K(i)  by  a  fixed  damping factor.  A comparator comparing K(i) and N(i)/2  controls the update of the current value K(i) according the following rules. if the value K(i) is superior to N(i)/2 at the second transition, then the counter K is updated by decrementing its current value.  Conversely,  when N(i)  is inferior to N(i)/2,  then counter K is updated by incrementing its current value. In this way,  the extracted clock which will be derived from counter K varies slowly and integrates sudden variations of the content of the first counter N. A counter P initialized with the updated value K(i+l) of counter K starts running from K(i+l)  to zero in response to the detection of the transition following on two said first and second transition and delivers a pulse SPL whenever its content reaches the value zero. The phase locked oscillator controlled by the pulse SPL generates the extracted clock which is likely to coincide with the middle of the eye pattern.
Patent CA-1340396-C (CA)
Title: Functionalized conductive polymers and their use in diagnostic devices
Inventor: ALBARELLA JAMES P
IPC: C07D409/04
Filed: 1988-09-23
Granted: 1999-02-16
Abstract: Electrically conducting homo- and/or copolymers and/or tripolymers can be produced from novel monomers, such as a 3-substituted 2,5-di(2-thienyl)pyrrole.  The polymers exhibit unexpectedly high stability and conductivities, and can be functionalized, such as with an enzyme, like glucose oxidase, or an ion-specific binding site, like a crown ether, or an antigen, without adversely affecting the conductivity of the polymer. The functionalized, conducting polymer can be used in a diagnostic device to determine the presence and concentration of a specific analyte in a liquid medium.  For example, the presence and concentration of glucose is determined by measuring the conductivity change in the polymer caused by the vibrational excitation induced in the enzyme, glucose oxidase, from its reaction with the glucose and/or by measuring a secondary effect of the enzyme/substrate reaction, such as the change in the conductivity of the conducting polymer caused by the generation of hydrogen peroxide during the glucose-glucose oxidase reaction.
Patent CA-1299420-C (CA)
Title: Apparatus for removing structural concrete
Inventor: SHOOK FORREST A
IPC: B05B13/04
Filed: 1988-10-20
Granted: 1992-04-28
Abstract: APPARATUS FOR REMOVING STRUCTURAL CONCRETE                ABSTRACT OF THE DISCLOSURE   Apparatus for removing structural concrete comprises an elongated hood having an inner generally non-accessible zone, an outer zone accessible for performing maintenance functions and an elongated slot between the zones. A reciprocal feed carriage is guidably mounted within the hood in the inner zone and mounts a seal support housing within the outer zone. Portions of the housing extend through the slot into the inner zone and are pivotally mounted upon the carriage. A rotating shaft and seal assembly is mounted upon the seal support housing in the outer zone, including a body having a water inlet adapted for connection to a source of water under pressure. An elongated tubular shaft and nozzle assembly is axially connected to the rotatable seal and shaft assembly and extends from the seal support housing through the slot into the inner zone of the hood, through the carriage and into the bottom of the hood for directing water under pressure against the structural concrete. The seal support housing and the component parts located thereon are mounted for a pivotal rotation, with the tubular shaft and nozzle assembly movable in an arc through the slot into the outer zone of the hood where the tubular shaft and nozzle assembly may be conveniently serviced, repaired and maintained.
Patent CA-1305174-C (CA)
Title: Urethanes made from aliphatic fluorinated alcohols, isocyanates and substituted aromatic compounds, a process for their preparation, and their use
Inventor: WEHOWSKY FRANK
IPC: C07C311/03
Filed: 1988-12-28
Granted: 1992-07-14
Abstract: Abstract of the disclosure Urethanes made from aliphatic fluorinated alcohols, iso-cyanates and substituted aromatic compounds, a process for their preparation, and their use.         Novel urethanes of the general formula                        (1), in which Rf denotes, for example, a C4-C20 perfluoroalkyl, R1 is H or C1-C4 alkyl, X is an integer from 1 to 4, Y is an integer from 0 to 10, m and n are integers from 1 to 2, the sum m + n being at most 3, and A is, for example, a phenylene or toluylene group are disclosed.  The novel urethanes are synthesized from an aliphatic fluorinated alcohol, an isocyanate and a specific substituted phenol or aniline compound.  They are prepared by reacting an aliphatic fluorinated alcohol with a di - or triisocyanate to form a fluorinated alcohol/isocyanate adduct and reacting this adduct with a certain substituted phenol or aniline to form the urethanes intended.  The novel urethanes are preferably used for oleophobic and hydrophobic finishing of textiles and leather.
Patent CA-1330317-C (CA)
Inventor: HARDEE KENNETH L
IPC: C01B11/02
Filed: 1989-01-17
Granted: 1994-06-21
Abstract: TREATING WITH CHLORINE DIOXIDE PRODUCED             FROM CHLORATE SALT                ABSTRACT OF THE DISCLOSURE    Chlorine dioxide is generated from chlorate salt and introduced into a treatment stream.  Initially following dissolution of the salt in aqueous medium, the solution is subjected to ion exchange for producing intermediate chloric acid.  The acid is next converted to chlorine dioxide by electrolysis.  The chlorine dioxide produced can then be extracted for use with a treatment stream. The chlorine dioxide generated can be free from unwanted by-products.  The total generation system lends itself to recycling of unused product for obtaining virtually complete conversion of chlorate salt to useful chlorine dioxide.
Patent CA-1323487-C (CA)
Inventor: LOONAM PETER A
IPC: B61G9/20
Filed: 1989-01-17
Granted: 1993-10-26
Abstract: (Case No. 8433) ABSTRACT OF THE DISCLOSURE   The present invention provides a method and apparatus for reconditioning a draft gear assembly friction clutch mechanism.  The apparatus comprises a generally rectangular substantial fiat plate member having at least one protuberance extending outwardly from one side of such plate member.  The friction clutch mechanism reconditioning method includes the steps of removing each component of the friction clutch mechanism from an open end of the draft gear housing.  Then engaging the plate member with an outer surface of one of the outer stationary plates of the friction clutch mechanism in a position such that the protuberance extends into a recess on the outer surface.          Thereafter reassembling the friction clutch mechanism into the open end of the draft gear housing in a position such that an opposite surface of the plate member engages a portion of a wall surface of the housing.
Patent CA-1337841-C (CA)
Inventor: RIVA ERNESTO
IPC: A61P31/04
Filed: 1989-01-27
Granted: 1995-12-26
Abstract: The present invention is directed to a new antibiotic substance denominated antibiotic A42867 pseudoaglycon, a pharmaceutically acceptable salt thereof, a process for its preparation from antibiotic A 42867 and pharmaceutical compositions containing the new substance of the invention.          Antibiotic A 42867 pseudoaglycon or a pharmaceutically acceptable salt thereof having the following formula (unsalified compound):       wherein represents a beta-vancosamine unit of formula   or a tautomer thereof.
Patent CA-1302473-C (CA)
Title: Conductive metal inserts in rotor of dynamoelectric machine
Inventor: SHAH MANOJ R
IPC: H02K3/48
Filed: 1989-02-02
Granted: 1992-06-02
Abstract: CONDUCTIVE METAL INSERTS IN ROTOR OF DYNAMOELECTRIC MACHINE                 ABSTRACT OF THE DISCLOSURE         A rotor of a dynamoelectric machine includes a coating of a high-conductivity metal covering a substantial portion of the surface thereof.   The high-conductivity metal reduces resistive heating produced by eddy currents from high-frequency harmonics of an AC power source.  In one embodiments of the invention, surfaces of dovetail wedges retaining energizing conductors in longitudinal slots are coated with a copper coating. The pole regions of the rotor include undercut slots to retain chamfered wedges of magnetic material coated with a high-conductivity metal.  Retaining rings at opposed ends of the rotor may also be coated with a high-conductivity metal.
Patent CA-1334602-C (CA)
Inventor: DROMARD ADRIEN
IPC: D21H19/40
Filed: 1989-02-10
Granted: 1995-02-28
Abstract: L'invention concerne une suspension aqueuse de silice dont la formulation est telle qu'elle soit stable, non gélifiante, pompable et dispersible après plusieurs jours de stockage. Cette suspension est caractérisée en ce qu'elle comprend une silice de précipitation constituée par un gâteau de filtration issu de la réaction de précipitation et délité; de l'aluminium ou un composé de l'aluminium; et un dispersant anionique. Cette suspension est notamment utilisable dans l'industrie papetière pour le couchage du papier.
Patent CA-1300430-C (CA)
Title: Multi-axle, steered articulated railway vehicle with compensation for transitional spirals
Inventor: SMITH ROY E
IPC: B61F5/44
Filed: 1989-02-14
Granted: 1992-05-12
Abstract: Title;  MULTI-AXLE, STEERED, ARTICULATED RAILWAY VEHICLE           WITH COMPENSATION FOR TRANSITIONAL SPIRALS                   INVENTOR: ROY E. SMITH                 ABSTRACT OF THE DISCLOSURE          An articulated vehicle has two body portions which are pivotally connected and supported on a frame. First and second wheelsets are pivotally mounted to and support the frame. The third and fourth wheelsets are provided for sup-porting the other ends of the first and second body port-ions, remote from the frame. A steering arrangement compris-ing a detecting device and a guiding device are provided, which can be in the form of a mechanical linkage. The first detecting device detects changes in the angle between the frame and the first body portion, whilst a second detecting device detects changes in the angle between the frame and the  second body portion.  Corresponding  first  and  second guide devices respond to the  detected angles; the  first guide device guides the first and third wheelsets to radial alignment, whilst the second guide device guides the second and fourth wheelsets to a radial alignment.
Patent CA-1334453-C (CA)
Title: Transition metal organosols stabilized by organometallic polymers
Inventor: BRADLEY JOHN S
IPC: C01G7/00
Filed: 1989-03-08
Granted: 1995-02-14
Abstract: A polymer stabilized colloidal metal (M) solution wherein said metal, M, is a transition metal in clusters of microcrystallite and said polymer is an organometallic polymer having the monomer unit with the chemical formula (RxM'O) where R is an alkyl group, cycloalkyl group or an alkoxy and M' is any metal satisfying the above formula and x is 2 less than the valence of M'.  The polymer is soluble in an inert liquid and interacts with the colloidal particles of M so as to solubilize the particles of M in the liquid.  The polymer is also able to react with water so as to produce the oxide of M', M'2Oz or its hydrate M'2Oz-nH2O, where z is the valence of M' and n is the number of molecules of water.  The metal clusters may be used directly for catalytic activity in the liquid phase or to produce discrete metal clusters in a solid matrix which also can be used for catalytic activity.
Patent CA-1332660-C (CA)
Inventor: YOSHIMOTO MASAHIRO
IPC: A01N25/28
Filed: 1989-05-16
Granted: 1994-10-25
Abstract: MICROENCAPSULATING COMPOSITION AND KIT. AND     PROCESS FOR PRODUCING MICROCAPSULES ABSTRACT OF THE DISCLOSURE:      An improved microencapsulating composition comprising an emulsifying agent and a compound that is capable of reacting with water to form a  membrane but which is not reactive with said emulsifying agent is disclosed.  Also disclosed are:  a microencapsulating composition comprising said first microencapsulating composition and an active ingredient (e.g. agrichemical, flavor, paint, liquid crystal, repellent against pest and rodent, fertilizer, cosmetic, pigment, ink, attractant, foaming agent, flame retardant, corrosion inhibitor or mold inhibitor) to be microencapsulated; a process for producing microcapsules using either one of the two microencapsulating compositions; and a kit consisting of the first microencapsulating compo-sitions and a component to be microencapsulated.  By mixing the first microencapsulating composition with both a compo-nent to be microencapsulated and a solvent such as water, or by simply mixing the second microencapsulating composition with the solvent, microcapsules that are stable and that have good handling properties can be produced with ease.
Patent CA-1338088-C (CA)
Title: Process for polymerizing olefins and polymerization catalyst therefor
Inventor: ISHIMARU NAOSHI
IPC: C08F297/08
Filed: 1989-06-14
Granted: 1996-02-27
Abstract: Disclosed are an olefin polymerization catalyst form-ed from (A) a solid titanium catalyst component containing magnesium, titanium and halogen as essential ingredients, (B) an organoaluminum compound, and (C) an organosilicon compound containing a cyclopentyl group, a cyclopentenyl group, a cyclo-pentadienyl group or a derivative derived from any of these groups, and a polymerization process which comprises poly-merizing or copolymerizing olefins in the presence of the olefin poly-merization catalyst to form a homopolyolefin having high stereoregularity or a copolyolefin having a narrow composition distribution.
Patent CA-1306181-C (CA)
Inventor: WEST FLOYD D
IPC: E05F15/10
Filed: 1989-06-14
Granted: 1992-08-11
Abstract: Abstract of the Disclosure A multi-section folding door includes first and second sets of vertically aligned panels with the panels in each set coupled together in an edge overlapping manner.          Each of the panels is suspended from a support bracket attached to the panel s upper edge, with each of the brac? coupled to and suspended from a track by means of a respective trolley.  The trolleys permit the first and second sets of panels to be displaced toward or away from each other in closing or opening the folding door relative to an opening in a wall.  An endless chain/sprocket arrangement driven by an electric motor allows the multi-panel folding door to be opened and closed very rapidly.  A thickened upper edge of each panel is inserted in a lower slot of a respective support bracket along the length thereof to facilitate assembly and installation of the door as well as replacement of a damaged or worn panel.  One or more breakaway straps couple adjacent panels in each set of panels to facilitate re-connecting adjacent panels as well as to reduce the possibility of damage to the trolleys and support track upon impact of a moving vehicle with a a door panel.  Each of the trolleys includes a plurality of rollers engaging the I-beam shaped support track in a self-aligning arrangement which provides continued rolling displacement of the trolleys along the track following vehicular impart with and displacement of  its associated suspended panel.
Patent CA-1334758-C (CA)
Title: Process for preparing 3-pyrrolidinol
Inventor: INOUE KENJI
IPC: C07B61/00
Filed: 1989-06-16
Granted: 1995-03-14
Abstract: A process for preparing 3-pyrrolidinol having the formula (II):                                            (II) or a salt thereof, which comprises reducing 4-chloro-3-hydroxybutyronitrile having the formula (I):                (I) to convert said 4-chloro-3-hydroxybutyronitrile (I)  into said 3-pyrrolidinol (II).  According to the present invention, 3-pyrrolidinol, particularly optically active 3-pyrrolidinol can be prepared economically and efficiently.
Patent CA-1340306-C (CA)
Title: Process for preparing a catalyst for the polymerization of olefins
Inventor: BUJADOUX KAREL
IPC: C08F4/655
Filed: 1989-06-22
Granted: 1999-01-05
Abstract: The process comprises, in a first step, the reduction of a titanium (IV) compound in an  alpha ,  omega -dihalogenoalkane using a molar excess of at least one halogenated organoaluminium compound in the absence of an ether, and then in a second step, the addition of a reaction mixture of a compound capable of forming a magnesium halide in-situ, without additional reduction of the titanium compound obtained in the first step. The catalyst contains at least one titanium compound, at least one halogenated organoaluminium compound and at least one inorganic magnesium compound in suspension in at least one  alpha ,  omega -dihalogenoalkane; the titanium cmpound is essentially a titanium (III) compound, the total titanium (II) and titanium (IV) content being less than or equal 15 % to the total titanium content. It may also contain at least one vanadium compound, an inert solvent, at least one partially polymerized  alpha -olefin and at least one organometallic activator from groups I to II of the Periodic Classification. Also described is a process for polymerization of olefins in the presence of said catalyst.
Patent CA-1314025-C (CA)
Title: Unit dose dispenser
Inventor: MARTIN JAMES H
IPC: B05B9/047
Filed: 1989-06-27
Granted: 1993-03-02
Abstract: Abstract of the Disclosure A unit dose liquid dispenser includes a resilient metering reservoir disposed within a main reservoir in which a large supply of the liquid is maintained under pressure.          Depression of an actuator to a dispensing position connects the metering chamber to the ambient while sealing it from the main reservoir resulting in the collapse of the metering reservoir and expulsion of the contents to the atmosphere at the pressure in the main reservoir.
Patent CA-1340796-C (CA)
Inventor: LUPSKI JAMES R
IPC: C12Q1/68
Filed: 1989-07-05
Granted: 1999-10-19
Abstract: A method of interrupting the expression of a macromolecular synthesis operon in bacteria comprising the step of binding an antisense oligonucleotide to a single stranded DNA or to a mRNA transcribed from the macromolecular synthesis operon. The antisense oligonucleotide can be either sequence specific to a unique intergenic sequence or a sequence specific to a bacterial homologous sequence. By interrupting the expression of the macromolecular synthesis operon bacterial infections can be treated. Specific antisense oligonucleotides are disclosed. The ability of the antisense oligonucleotide to bind the mRNA or single stranded DNA also allows the identification of the bacteria by using a unique intergenic antisense oligonucleotide to bind to the single stranded DNA or to the mRNA transcribed from the macromolecular synthesis operon. A method for competitively inhibiting the protein products of the MMS operon with oligonucleotides is also disclosed. Methods of identifying unique intergenic sequences are also disclosed.
Patent CA-1331267-C (CA)
Title: Hardwood floor system
Inventor: NIESE MICHAEL W
IPC: E04F15/04
Filed: 1989-08-07
Granted: 1994-08-09
Abstract: HARDWOOD FLOOR SYSTEM          Abstract of the Disclosure A hardwood, free floating floor system has upper and lower subfloors of wooden panels with criss-cross kerf patterns formed in either their top or bottom surfaces, a plurality of elongated floor-boards disposed above the upper subfloor, the floor-boards having transverse kerfs cut in their bottom surfaces, and a plurality of uniformly spaced pads supporting the lower subfloor above a base.  The combination of the subfloor kerf patterns, the floor-board kerfs, and the compressible, deflectable pads provides a free floating hardwood floor system which meets the difficult standards established by the Otto Graf Institut of West Germany for assessing a floor's ability to reduce injury and to provide highly consis-tent performance characteristics.
Patent CA-1323883-C (CA)
Inventor: WU CHYUANG-JONG
IPC: E04H9/02
Filed: 1989-08-24
Granted: 1993-11-02
Abstract: ABSTRACT       The invention provides an anti-earthquake structure constructed between a building and the construction site thereof.    The  structure  comprises  a  plurality  of supporting layers, the upper and lower surfaces of which are provided with multiple ball seats and a plurality of corresponding ball members disposed on and pressed between the ball seats.  The extremely small rolling friction of the ball members against the supporting layers serve in insulating the building from the wobbling force of an earthquake.
Patent CA-1332209-C (CA)
Inventor: MCCAUSLAND THOMAS W
IPC: C03B11/00
Filed: 1989-09-01
Granted: 1994-10-04
Abstract: Abstract A bronze alloy composition for glass making molds that has excellent corrosion resistance and resistance to pit-ting, the composition comprising copper, aluminum, nickel, iron, manganese, and a critical amount of silicon to provide the resistance to pitting.
Patent CA-1314957-C (CA)
Title: Intrusion detection system and a method therefor
Inventor: JOHNSON RICHARD A
IPC: G08B29/18
Filed: 1989-09-26
Granted: 1993-03-23
Abstract: PATENT                   A B S T R A C T In the present invention, a dual sensing intrusion detection system is disclosed.  A passive infrared radiation detection sensor generates a first output signal in response to the detection of an intruder in the volume of space.  A second detection sensor is directed to the same volume of space and generates a second output signal in response to detection of the intruder.  A switch activates the second detection sensor in response to the detection of the intruder by the infrared radiation detector. Logic circuit receives the first and second output signals and produces an alarm signal in response thereto to indicate the detection of the presence of the intruder in the volume of space.
Patent CA-1327288-C (CA)
Inventor: SMITH SAM D
IPC: B62D53/06
Filed: 1991-04-10
Granted: 1994-03-01
Abstract: ABSTRACT OF THE DISCLOSURE           A railroad train comprising a plurality of highway trailers hitched front end to rear end with the end of each trailer supported on an adapter releasably connected to the trailer and with the adapter permanently mounted on the bolster of a four-wheel double-axle railroad truck, desirably a swing motion truck, with the adapter also supported by side bearings mounted on the bolster and with the adapter desirably having a secondary spring suspension.