baber/WOPTO huggingface dataset:
Patent CA-2026947-C (CA)
Title: Turbidity monitoring apparatus and methods
Inventor: NICHOLS WILLIAM R
IPC: B01D24/22
Filed: 1990-10-04
Granted: 1996-06-11
Abstract: Improved methods are disclosed for cleansing a plurality of seriate filter beds in automatic backwash filtering systems by backwashing the beds one at a time with backwash liquid from an effluent channel common to seriate effluent ports of the plurality of filter beds and pumping backwash liquid seriatim through separate effluent ports of individual filter beds and then flowing filtered effluent from each bed through its effluent port into the effluent channel, repeating such steps of backwashing and flowing filtered effluent on individual filter beds until all the filter beds in the system have been backwashed wherein, simultaneously with the backwashing of a second bed, waste liquid from the first bed is pumped through its port while the waste liquid is monitored for turbidity and such waste liquid pumping is continued until the turbidity thereof reaches a predetermined low level. Meanwhile, the cleansing operation on the second bed is prevented from moving to a third bed until the turbidity of the waste liquid from the first bed reaches the predetermined low level. Such monitor control operation is applied to third and further ports until all filter beds in the system have been cleansed.
Patent CA-2027453-C (CA)
Title: Materials for removing suspended impurities and use thereof
Inventor: KAWAZU HIDEO
IPC: B01J41/14
Filed: 1990-10-12
Granted: 2000-08-22
Abstract: The improved organic polymeric adsorbent is used to adsorb and remove suspended impurities present in trace amounts in the water being treated in an apparatus for producing ultrapure water for use in the semiconductor industry or in a condensate purifier in steam power generating facilities and it is composed of a particulate or powdered can on exchange resin and/or anion exchange resin. The improvement is that this adsorbent has such a surface layer structure and morphology that granules are seen to bind with one another when examined under a scanning electron microscope in a field of view ranging from a magnification of 50 to 200,000. The adsorbent may be used as the constituent of a packing layer and/or a filter layer to make a material for removing suspended impurities.
Patent CA-2033567-C (CA)
Title: Reactive power compensation apparatus
Inventor: SATO NAOKO
IPC: H02J3/18
Filed: 1991-01-03
Granted: 1995-10-31
Abstract: A reactive power compensation apparatus includes a power system with a given voltage, a controller for controlling the voltage of the power system to a predetermined target voltage, using a predetermined transfer function, a reactive element, a switch for connecting the reactive element to the power system, a detector for detecting an impedance of the power system in accordance with a change in the voltage of the power system, the voltage change being defined by a difference between the voltage of the power system obtained when the reactive element is connected to the power system and the voltage of the power system obtained when the reactive element is disconnected from the power system, and a circuit for changing the trans-fer function of the controller in accordance with the impedance detected by the detector.
Patent CA-2040128-C (CA)
Title: Catalysts for the production of methyl amines
Inventor: HUTCHINGS GRAHAM JOHN
IPC: C07C209/16
Filed: 1991-04-10
Granted: 2001-07-31
Abstract: A modified natural clinoptilolite, produced by treating a natural clinoptilolite with a suitable mineral acid or with a suitable alkali and then with a suitable mineral acid, is used as a catalyst in a process for the conversion of methanol and ammonia to give a product containing at least 50% by weight of monomethylamine.
Patent CA-2042278-C (CA)
Title: Circuit breaker positive trip indication spring
Inventor: MCKAY GEOFFREY HUGH
IPC: H01H71/04
Filed: 1991-05-09
Granted: 2000-11-28
Abstract: A positive trip indication spring is used with circuit breakers that provide colored trip indication through a visual access opening in the circuit breaker cover to ensure that the trip indicia on the circuit breaker operating handle align with the visual access opening upon the occurrence of a trip condition.      The trip indication spring cooperates with the powerful circuit breaker operating mechanism springs to provide additional bias to the circuit breaker operating handle to move the operating handle to its fully "TRIPPED" position.
Patent CA-2044045-C (CA)
Title: Electric iron with a demineralizing cartridge and an improved water reservoir
Inventor: BRANDOLINI JEAN-LOUIS
IPC: D06F75/10
Filed: 1991-06-06
Granted: 1998-08-18
Abstract: A non-scaling electric steam iron comprises a heating sole-plate (1), a steam chamber (3), a water reservoir (5), a feed device (6) for supplying water to the steam chamber, and a demineralizing cartridge (7) placed in the water circuit which connects the reservoir (5) to the steam chamber (3).    The demineralizing cartridge (7) is placed in a removable manner between a primary plain-water reservoir (5) and a secondary demineralized-water reservoir (25) which communicates with the water feed device (6).  The cartridge (7) communicates with the primary reservoir (5) and the secondary reservoir (25) by means of valves (27a, 27b) which prevent any outflow of water when the cartridge is removed from the iron.
Patent CA-2045178-C (CA)
Title: Pressure-relieving device and process for implanting
Inventor: SMITH STEWART GREGORY
IPC: A61F2/14
Filed: 1990-10-26
Granted: 2002-12-31
Abstract: This invention involves a porous device (11) for implantation in the scleral tissue (12) of the eye to relieve the intraocular pressure of glaucoma and a method for surgically implanting the device (11).  The porous implant device (11) has an overall hex-ahedral shape and is surgically implanted within the scleral tissue (12) of the eye with at least one edge of the device at an open-ing (16) entering the anterior chamber (14), with no substantial extension into the anterior chamber (14) to provide efficient drain-age of aqueous fluid from the anterior chamber (14) for longer periods of time to provide intraocular pressure relief and prevent adverse effects of glaucoma.
Patent CA-2054879-C (CA)
Title: Two-step valve operating mechanism
Inventor: MCCARROLL MICHAEL E
IPC: F01L1/14
Filed: 1991-11-04
Granted: 1994-08-23
Abstract: TWO-STEP VALVE OPERATING MECHANISM Abstract of the Disclosure A camshaft has, for each valve lifter, a high lift cam between two low lift cams, the high lift cam fitting within the envelope of the low lift cams.  The lifter comprises an outer tappet elongated in the direction of the camshaft and slidably mounted in an elongated bore in a cam carrier.  The outer tappet is contacted by both low lift cams and operates two valves simultaneously.  An elongated bore extending transverse of the outer tappet carries an elongated inner tappet which is contacted by the high lift cam.  A hydraulically actuated locking mechanism couples the tappets for movement together for high lift operation and unlocks for low lift operation to allow the inner tappet to idle in the outer tappet.
Patent CA-2055188-C (CA)
Title: Evaporation installation
Inventor: HUERCANOS ALVAREZ JOAQUIN
IPC: B01D1/12
Filed: 1991-11-08
Granted: 2001-03-13
Abstract: The present invention refers to an evaporation unit for the concentration of liquid solutions and particularly to a concentration unit whose operating system prevents and/or eliminates the formation of scales of the solids of the solution on the heat exchange surfaces.      The vapors coming from evaporation flow from the evaporation enclosure(s) to the feed enclosure of the solution to be evaporated, to increase the mixing speed of liquid and vapors that pass through the evaporation area thus preventing the precipitation of particles or deposits on the heat exchange surfaces.
Patent CA-2057998-C (CA)
Title: Process for preparing arylene sulfide polymers
Inventor: ASH CARLTON E
IPC: C08G75/02
Filed: 1991-12-18
Granted: 1997-10-28
Abstract: A process for preparing high molecular weight arylene. sulfide, polymers by dehydrating an aqueous mixture of a sulfur source and a cyclic organic amide to form a dehydrated mixture, contacting the dehydrated mixture with a dihaloaromatic compound to produce a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide polymer wherein an aqueous alkali metal carboxylate mixture is added to the polymerization mixture after the conversion of the dihaloaromatic compound is about 40 percent to about 30 minutes prior to entering into termination of the polymerization. In another embodiment, a process for preparing high molecular weight arylene sulfide polymers by contacting an essentially anhydrous sulfur source, a cyclic organic amide, and a dihaloaromatic compound to form a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide polymer wherein an aqueous alkali metal carboxylate mixture is added to the polymerization mixture after the conversion of the dihaloaromatic compound is about 40 percent to about 30 minutes prior to entering into termination of the polymerization.
Patent CA-2059423-C (CA)
Title: Lubricant composition for fluorinated refrigerants used in compression refrigeration systems
Inventor: SHORT GLENN D
IPC: C10M105/38
Filed: 1992-01-15
Granted: 2002-06-25
Abstract: A lubricant composition of suitable viscosity miscible in non-chlorinated, fluorinated hydrocarbon refrigerants includes polyhydric alcohol esters, such as TMP, mono and/or di-pentaerythritol esters, made with branched carboxylic acids.
Patent CA-2060024-C (CA)
Title: Trailers
Inventor: RICKETTS DAVID THOMAS
IPC: B62D63/06
Filed: 1992-01-24
Granted: 1996-12-31
Abstract: A trailer comprising an open top rectangular box member which is detachably attachable to a support assembly which is attachable to a motor vehicle so that the trailer can be towed. The support assembly comprises a support member mounted on two wheels, the open top box member being attached to the support member when the trailer is ready for use and detachable therefrom when the trailer is not in use. The support assembly is, when detached, locatable within the open top box member so that the support member at least substantially closes the open top of the box member to thus form a box-like structure which can be stored resting in any desired face.
Patent CA-2060073-C (CA)
Inventor: OBERKOFLER JORG
IPC: C02F1/50
Filed: 1992-01-27
Granted: 2002-06-25
Abstract: The invention relates to a method of reducing slime for-mation in plants in which water is recycled, whereby a ligno-sulfonate is added to the water. The lignosulfonate is pro-duced by a special method and has a special composition, which leads to a surprisingly good effect of the added lignosul-fonate.
Patent CA-2065848-C (CA)
Title: Water-in-oil emulsion explosive composition
Inventor: TORII AKIO
IPC: C06B47/14
Filed: 1990-08-22
Granted: 1999-12-14
Abstract: Disclosed is a water-in-oil emulsion explosive composition comprising a continuous phase consisting of a carbonaceous component; a disperse phase consisting of an aqueous solution of inorganic oxidizer salt; an emulsifier; an organic gas-retaining agent; and an aluminum powder. The present explosive composition can show especially high underwater explosion energy.
Patent CA-2069983-C (CA)
Title: Method for improving the aging resistance of the sidewalls of retreaded tires
Inventor: MAKINO YOSHIHIRO
IPC: C08J7/00
Filed: 1992-05-29
Granted: 1998-08-18
Abstract: A method for improving the aging resistance of the sidewalls of retreaded tires  is provided.   The method involves the steps of treating the surface of the sidewalls of the worn tire to be retreaded with an aqueous  solution  or  dispersion  containing  a film-forming  polymer  and  an  antiozonant,  retreading the treated tire and then curing the treated retreaded tire thereby causing the antioxidant to migrate into the inner portion of  the  sidewall.   The method of  the invention  is  particularly  useful  for  improving  the aging resistance of the sidewalls of worn truck and bus tires which are conventionally retreaded several times.
Patent CA-2070541-C (CA)
Title: Liquid crystal composition, liquid crystal element and process for the preparation of liquid crystal element
Inventor: NISHIYAMA SHINICHI
IPC: C09K19/42
Filed: 1992-06-05
Granted: 2000-03-07
Abstract: The liquid crystal composition of the present invention comprises 1 - 99 wt.% of an antiferroelectric liquid crystal compound such as a compound represented by the following formula [A-8] and 99 - 1 wt.% of a cholesteric liquid crystal compound such as a compound represented by the following formula [B-2].   (see formula I) (see formula II) By the use of the liquid crystal composition of the invention, a liquid crystal element improved in liquid crystal properties such as contrast can be prepared.
Patent CA-2077216-C (CA)
Title: Manufacture of cellulose
Inventor: HENRICSON KAJ
IPC: D21C11/06
Filed: 1992-08-31
Granted: 1996-01-30
Abstract: Chemicals are recovered during the production of cellulose pulp by forming two different sulfidity melts in two different sections of a recovery boiler, and then producing cooking liquors from different melts in dissolving tanks. The liquors may be causticized and/or oxidized, or may be utilized uncausticized. Uncausticized green liquor having a sulfidity of about 70-90% may be used early in a kraft cooking cycle, followed by treatment with low sulfidity oxidized and causticized white liquor. In the continuous digestion of cellulosic pulp, oxygen may be added to the recirculation loops below the black liquor withdrawal to enhance the alkalinity of the slurry and to assist in delignification. Oxidized cooking liquor with low sulfidity can be added to oxygen bleaching and alkali extraction stages downstream of the digester, and a portion of the high sulfidity cooking liquor can be used to produce acid used in an ozone bleaching stage.
Patent CA-2077728-C (CA)
Title: Speech coding apparatus having speaker dependent prototypes generated from a nonuser reference data
Inventor: BAHL LALIT R
IPC: G10L25/03
Filed: 1992-09-08
Granted: 1996-08-06
Abstract: A speech coding apparatus and method for use in a speech recognition apparatus and method.  The value of at least one feature of an utterance is measured during each of a series of successive time intervals to produce a series of feature vector signals representing the feature values.   A plurality of prototype vector signals,  each having  at  least  one  parameter  value  and  a  unique identification value are stored.   The closeness of the feature vector signal is compared to the parameter values of the prototype vector signals to obtain prototype match scores for the feature value signal and each prototype vector signal. The identification value of the prototype vector signal having the best prototype match score is output as a coded representation signal of the feature vector   signal.    Speaker-dependent   prototype   vector signals  are  generated  from  both  synthesized  training vector signals and measured training vector signals.  The synthesized  training  vector  signals  are  transformed reference feature vector signals representing the values of features of one or more utterances of one or more speakers in a reference set of speakers.   The measured training feature vector signals represent the values of features of one or more utterances of a new speaker/user not in the reference set.
Patent CA-2077750-C (CA)
Title: Apparatus for networking programmable logic controllers to host computers
Inventor: BRONIKOWSKI JOSEPH T
IPC: G06F13/00
Filed: 1991-03-21
Granted: 1997-10-21
Abstract: A control system for transferring messages between a programmable logic controller (21) and a host computer (25) over an Ethernet communications network (23) is disclosed.  The messages include a routing address specifying an originating drop number and a destination drop number and a routing drop number. The system is responsive to the routing address for transferring the messages between the programmable logic controller (21) and the host computer (25).
Patent CA-2078883-C (CA)
Inventor: WILSON MICHAEL
IPC: C12M/
Filed: 1991-03-26
Granted: 1996-09-24
Abstract: Methods of maintaining or providing sterile or specific pa-thogen free environments are disclosed. The methods involve the use of semi-permeable membrane materials between the sterile or pathogen free environment and surrounding potentially hostile environments. One particular method and apparatus is described for introducing drugs or other secondary substances to a sterile li-quid for example for transfusion to a patient. The apparatus has a first port (4) for connection to a container of sterile solution second port (5) for connection to a transfer tuber and a third port (9) for introduction of the secondary substance. The connection between the third port and the other ports is by way of a semi-permeable membrane (11) selected to permit the passage of the secondary substance while preventing the ingress of pathogens or other potentially harmful organisms.
Patent CA-2082620-C (CA)
Inventor: PEDRONO CLAUDE
IPC: G02C7/06
Filed: 1992-11-10
Granted: 1996-01-16
Abstract: Cette lentille a une surface asphérique (S) présentant une zone (VL) pour la vision de loin, une zone (VP) pour la vision de près et, entre ces deux zones, une zone (VI) pour la vision intermédiaire, avec une courbe méridienne (MM') le long de laquelle la courbure de la surface varie progressivement et qui est inclinée de haut en bas vers le côté nasal de la lentille au moins dans la zone (VI). La partie de la courbe méridienne située dans les zones (VI et VP) comporte un segment (DC) faisant avec la verticale un angle .alpha., dont la valeur est une fonction croissante de l'addition de puissance A de la lentille. Dans le système de coordonnées (X'X, Y'Y), le point (C) du segment (DC) a une ordonnée dont la valeur est aussi une fonction croissante de l'addition A. Au point (C), la surface (S) a une valeur de sphère moyenne qui correspond à une addition de puissance comprise entre 0,8 et 0,92 fois l'addition nominale de puissance de la lentille.
Patent CA-2085751-C (CA)
Title: Device for monitoring a control unit
Inventor: SCHOELLKOPF KARL-OTTO
IPC: B66B5/00
Filed: 1992-04-16
Granted: 1996-08-20
Abstract: The invention relates to a monitoring device for a control unit comprising a safety chain.  In accordance with the invention, the monitoring device comprises a testable switching device which is provided with input and output terminals such that a monitoring loop may be set up from a plurality of testable switching devices and a sequence of digital signals can, in particular, be transmitted via this loop as a continuous signal so that a "digital stand-by current loop" is obtained.
Patent CA-2086315-C (CA)
Title: Process for hydrogenatively treating petroleum distillation residual oils
Inventor: USHIO MASARU
IPC: C10G32/02
Filed: 1992-12-24
Granted: 2003-11-11
Abstract: A process is disclosed for refining distillation residual fractions of a crude petroleum oil. The process employs a high gradient magnetic separator for magnetically depositing iron impurities from such distillation residual oil onto a ferromagnetic filler in the separator. The ferromagnetic tiller is cleaned at predetermined intervals by a selected class of washing liquids so that the refining operation can be carried out continually.
Patent CA-2086858-C (CA)
Title: Sinterable carbon powder
Inventor: BOENIGK WINFRIED
IPC: C10C3/04
Filed: 1993-01-07
Granted: 2002-10-01
Abstract: A carbon powder with 40 to 75%-wt QI, more than 90%-wt TI, an optical anisotropy of less than 50%-vol, which begins to sinter between 200 and 300°C, and which has an oxygen content of more than 2%-wt is proposed for the production of carbon bodies that are free of binding agent. The carbon powder is produced by distillation from bituminous products at at most 5 mbar and at a terminal temperature of at least 400°C, grinding of the distillation residue to a particle size of less than 30 µm, and oxidation of the powder right into the particle cores.
Patent CA-2092523-C (CA)
Inventor: PLAKS NORMAN
IPC: B03C3/12
Filed: 1991-08-06
Granted: 1999-06-01
Abstract: Le nouveau filtre électrostatique (10) comprend une multiplicité de sections de captage (20) alternant en série avec une multiplicité de sections de chargement (14), chaque section de captage (20) étant précédée d'une section de chargement (14). Chaque section de captage (20) contient une multiplicté de plaques de captage (22) espacées d'une distance d pour définir entre elles une multiplicité de couloirs d'écoulement de gaz. Chaque couloir d'écoulement de gaz contient de 1 à 4 fils métalliques à effet de couronne (24) alignés parallèlement à l'écoulement de gaz. Chaque section de chargement (14) contient une multiplicité de fils métalliques de décharge par effet de couronne (18) alternant avec des anodes (16) dans un alignement transversal par rapport à l'écoulement gazeux. Chaque section de captage (20) est beaucoup plus courte que celles de la technique antérieure, à la fois en longueur réelle et par rapport à la longueur de la section de chargement (14) et de l'espace (d) entre les plaques.
Patent CA-2096930-C (CA)
Inventor: CULLUM JOHN M
IPC: B60P3/12
Filed: 1993-05-25
Granted: 2005-09-27
Abstract: An apparatus for underlift towing and recovery vehicles is disclosed. The apparatus uses a simple mechanical mechanism for effecting the various movements of a vehicle lifting boom to both properly engage a vehicle to be towed and to raise the boom to a stored position when not in use. A double pivot system is provided wherein a single power-actuated means is capable of efficiently lifting a load when rotating the boom about a first axis, and of folding the boom into an upright, stored position when rotating the boom about a second axis.
Patent CA-2097702-C (CA)
Title: Dermatomycosis vaccine
Inventor: POLYAKOV IGOR D
IPC: A61P17/00
Filed: 1992-10-17
Granted: 2004-08-17
Abstract: The present invention relates to the preparation of vaccines and their use in preparing compositions for specifically preventing and treating dermatomycoses.
Patent CA-2102490-C (CA)
Title: 2-amino-1,2,3,4-tetrahydronaphthalene derivatives active on the cardiovascular system, processes for their preparation and pharmaceutical compositions containing them
Inventor: SANTANGELO FRANCESCO
IPC: C07F9/08
Filed: 1993-03-13
Granted: 2004-06-08
Abstract: Derivatives of 2-amino-1,2,3,4-tetrahydronaphthalene of formula (I) wherein R1 and R2, different from each other, are a hydrogen atom or an OY' group; Y and Y' are a hydrogen atom or an acyl group or a phenyl; m is 1 and 2; n is an integer from 3 to 7; R3 is hydrogen alkyl; R4 and R5, are hydrogen or halogen alkyl or alkoxy; and their use in therapeutic field ace described. The compounds are particularly useful in the treatment of arterial hypertension, cardiac decompensation and renal failure, in the treatment of peripheral arteriopathies and in cerebrovascular insufficiency.
Patent CA-2109003-C (CA)
Title: Image reading apparatus and copying apparatus
Inventor: UTAGAWA TSUTOMU
IPC: G07D7/12
Filed: 1993-10-22
Granted: 1999-11-30
Abstract: An image reading apparatus includes, as an arrangement for discriminating a specific image with high precision, first illumination means (206) for illuminating an object image so as to perform a normal reading operation, second illumination means (205) for illuminating the object image with light having characteristics different from those of the first illumination means so as to discriminate whether or not the object image is a specific image, and means (4301, 4302, 417) for adjusting the quantity of light emitted from each of the first and second illumination means.