baber/WOPTO huggingface dataset:
Patent CA-2007253-C (CA)
Title: Method for in-situ repair of solvent dewaxing filter cloths
Inventor: DALLAIRE LOUIS CHARLES
IPC: B01D41/00
Filed: 1990-01-05
Granted: 1999-09-14
Abstract: A method is disclosed for the in-situ repair of damaged filter cloths in solvent dewaxing filters.      The damage that can be repaired can be either or both of tears or holes. The method comprises thoroughly washing the filter cloth in the area of the damage to remove wax and oil, applying a quantity of solvent resistant adhesive to the damaged area such that the area of treatment extends beyond the hole or tear and adhesive overlays onto undamaged cloth, inserting pre-cut portions of filter cloth into the damage so as to completely fill the hole or tear but not create a bulge or cloth buildup in the face of the filter cloth where required and, finally, and optimally applying a final coating of adhesive over the repaired area.
Patent CA-2008526-C (CA)
Title: Method for producing pulp for papermaking using microwave heating of treated chips and defibration
Inventor: LAW KWEI-NAM
IPC: D21C3/22
Filed: 1990-01-25
Granted: 1996-04-09
Abstract: A method for producing pulp, primarily wood pulp, from lignocellulosic material such as wood chips using microwave irradiation of chemically treated chips prior to mechanical defibration. The novel aspect of the microwave irradiation prior to refining is that it results in reduced cooking time and energy.
Patent CA-2014680-C (CA)
Title: Dentifrice composition
Inventor: MORI SHIGEKI
IPC: A61K8/43
Filed: 1990-04-17
Granted: 2001-07-31
Abstract: The present invention is directed to a dentifrice composition containing a bactericide selected from the group consisting of biguanido bactericides and N-alkyldiaminoethylglycine, a polyoxyethylene-polyoxypropylene block copolymer surfactant and an N-higher acylamino acid or its salt. The dentifrice composition maintains the stability of the bactericidal activities of the bactericide added and, hence, is effective in the inhibition of the formation of dental plaque and the prevention of gingivitis.
Patent CA-2016152-C (CA)
Title: Process for chemical stabilization of heavy metal bearing dusts and sludges
Inventor: LYNN JOHN D
IPC: B09B3/00
Filed: 1990-05-07
Granted: 1995-11-21
Abstract: A calcium-alumino-silicate composition comprising the reaction product of electric arc furnace dust and/or an aqueous chemical waste sludge including a source of ferrous ions and selective additive materials, the additive materials are selected so that the total composition of the additive ingredients and said sludge includes fly ash, electric arc furnace dust, lime kiln dust, ferrous sulfate, hydrated lime to provide an alkalinity of about 9 to 9.5% and water, the composition contains at least 0.2% by weight of ferrous ions and is hardenable through chemical reactions, the product of which includes calcium-alumino-silicates.
Patent CA-2016422-C (CA)
Title: Rinse-added fabric conditioning compositions containing fabric softening agents and cationic polyester soil release polymers
Inventor: TRINH TOAN
IPC: C08G63/685
Filed: 1990-05-09
Granted: 1996-02-06
Abstract: Rinse-added  fabric  conditioning  compositions  containing cationic  soil  release  polymers  are  much  more  effective  than similar compositions containing nonionic soil release polymers for soil release.  Most of the cationic soil release polymers are new compounds  comprising  a hydrophobic  alkylene oxide/terephthalate portion which has a low molecular weight and at least a single cationic charge under use conditions.
Patent CA-2022192-C (CA)
Title: Optical disk recording/reproducing device
Inventor: MAEDA SHIGEMI
IPC: G11B27/32
Filed: 1990-07-27
Granted: 1995-03-21
Abstract: An  optical  disk  recording/reproducing  device  in accordance with the present  invention has  a controller that, during the recording, performs the rotation control of the optical disk in Constant Linear Velocity according to reproduced signals of pre-recorded information that was preliminary  recorded  on  the  optical  disk,  during  the reproduction, performs the rotation control according to reproduced signals of recorded information,  and when the rotation control based on the reproduced signals of the recorded information is infeasible, switches the rotation control and performs the rotation control based on the reproduced signals of the pre-recorded information during the  reproduction  also.  As  a  result,  a  suitable  and appropriate  CLV  control  may  be  executed  during  the recording and during the reproduction.
Patent CA-2027687-C (CA)
Inventor: SUNDET DOUGLAS C
IPC: D04H1/42
Filed: 1990-10-15
Granted: 2002-12-31
Abstract: The present invention relates to filtration material, more particularly, filtration material that is suitable for air filtration in heating, ventilating, and air conditioning systems. The primary objective of a high performance air filter is to provide maximum particle removal while maintaining an acceptable pressure drop. Conventional fibrous filters obtain improved particle removal efficiency by using filaments having small diameter, which can be packed closely together. This close packing results in smaller voids between the fibers, which increases the probability that particles will be intercepted by a fiber. This increase in particle removal is, however, accompanied by an increase in pressure drop.      Excessive pressure drops can restrict air flow and shorten filter life. This invention provides filtration material comprising a web comprising continuous, meltblown fibers and staple, electrically charged fibers randomly dispersed among the continuous fibers. The filtration material can be formed in planar configurations and in configurations other than planar. Non-planar configurations can extend the useful working area for a given filter element's cross-section without requiring an additional corrugating or pleating process step. The filtration material exhibits high strength and low pressure drop.
Patent CA-2028553-C (CA)
Title: Method employing type ii endoglycosidase
Inventor: CARPENTER RICHARD SHEPARD
IPC: C11D3/386
Filed: 1990-10-25
Granted: 1996-11-19
Abstract: Methods for removing microorganisms, such as bacteria, from surfaces by treatment with Type II endoglycosidase along or in combination with other enzymes and/or detergents.
Patent CA-2030837-C (CA)
Title: Deodorant porous polymer and a deodorant fibrous material using the same
Inventor: YAMAMOTO TOHRU
IPC: C08G79/00
Filed: 1990-11-26
Granted: 1999-02-23
Abstract: A deodorant porous polymer having excellent deodorant effects is provided.  The deodorant porous polymer is in the shape of substantially uniform particulates or an aggregate thereof, and is obtained by the hydrolysis and polycondensation of  at least one alkoxide selected from the group consisting of inorganic alkoxides and metal alkoxides through the use of a sol-gel method.  Also provided is a deodorant fibrous material that includes a fibrous substrate and a deodorant porous polymer as mentioned above, which is combined with the fibrous substrate in the  physically-combined state and/or the chemically-combined state.
Patent CA-2033940-C (CA)
Title: Galvanneal heating of strip
Inventor: ROSS NICHOLAS V
IPC: C23C10/28
Filed: 1991-01-10
Granted: 1996-07-23
Abstract: An apparatus for galvannealing steel strip comprises an applying device for applying a coating of controlled thickness of a strip.  A controller controls the thickness of the applied coating.  A heating furnace heats the steel strip to produce a galvannealed product.  Edge heaters for heating the edges of the steel strip by magnetic induction promote uniform temperature distribution across the steel strip.  The uniform temperature distribution produces more uniform galvannealing in the product.  The edge heaters have preselected operating frequencies.  A modulating circuit imposes a frequency modulation on the operating frequencies of the edge heaters to avoid undesirable transverse flexural resonance in the galvannealed product.
Patent CA-2035876-C (CA)
Title: Computer with cache
Inventor: WRIGHT DAVID PAUL
IPC: G06F12/08
Filed: 1990-07-05
Granted: 1996-07-09
Abstract: A computer comprises a CPU (11), a memory store (12) and a cache comprising a cache memory (17) and a cache controller (16), the CPU (11) being capable of receiving from a memory store (12), or from the cache memory (17), elements of data each arranged as a plurality of words of data associated with a common address, the cache controller (16) inherently only being capable of handling elements of data arranged as a single word of data and an associated address, there being provided a state machine to enable the cache controller  (16)  to handle elements of data each arranged as a plurality of words of data associated with a common address.
Patent CA-2037117-C (CA)
Title: Closure for a container
Inventor: BRYAN WILLIAM T
IPC: B65D5/74
Filed: 1991-02-26
Granted: 1999-01-26
Abstract: A pour spout assembly for a container having major and minor chambers, a tongue formed from the wall of the minor chamber and hinged to the wall, the tongue being defined by a transverse and downwardly extending upright slittable lines of weakening in said wall at opposite ends of the transverse slittable line of weakening, the tongue being hinged to the wall at lower ends of the upright slittable lines of weakening, a web member having a central portion attached to an inner face of the tongue and having at least one portion thereof projecting across a slittable line of weakening and engageable with an inward facing face of the wall, outer glue panels attached to an inner face of the container adjacent the tongue and accordian pleat panels connecting the central portion and the outer glue panels, free edges of the central panel of the web being hinged to the accordian pleat panels, outer edges of the accordian pleat panels being hinged to the glue panels, the tongue swinging between a closed position in which the tongue is aligned with the wall and a portion of the central portion of the web overlaps a portion of the inward face of the wall adjacent the tongue and covers and closes a portion of a slit and an open position in which the tongue extends upwardly and outwardly from hinging means of the tongue when the slittable lines of weakening have been slit, the pour spout being closable by swinging the tongue from the open position past alignment with the wall to move the projecting portion of the central portion of the web into the container and then outwardly to closed position secured by abutment of the projecting portion with the inward face of the wall.
Patent CA-2038653-C (CA)
Title: Method for the determination of fir filter coefficients in equalizers
Inventor: BUNE PAUL
IPC: H03H21/00
Filed: 1991-03-20
Granted: 1994-09-20
Abstract: The invention relates to a method of creating an FIR filter being adapted to the channel impulse response of a time-dispersive transmission channel comprising the steps of -  creating several FIR sub-filters in parallel, -  selecting the tap locations of each sub-filter, -  determining the sub-filter tap coefficients in such a manner that the output impulse responses of the sub-filters are partially or entirely orthogonal with respect to each other, and -  creating an FIR filter by weighted combination of the parallel sub-filters.
Patent CA-2040211-C (CA)
Inventor: OGIWARA HIDESHI
IPC: H02J3/18
Filed: 1991-04-11
Granted: 1997-08-05
Abstract: A gate pulse generator for a reactive power compensation device in which a capacitor is connected in series with antiparallel connected thyristors and which is so constructed that triggering pulses are produced and current is passed into said capacitor when both a signal of forward voltage imposed on said thyristors and a thyristor conduction period signal that is reset by a phase control signal are present.  The gate pulse generator includes a means by which conduction period signals associated with thyristors of one polarity are reset during conduction if both a triggering pulse of thyristors of the opposite polarity and a delayed phase control signal associated with the opposite polarity thyristor is present.
Patent CA-2048407-C (CA)
Title: Gonadoliberin antagonists
Inventor: KONIG WOLFGANG
IPC: A61P5/00
Filed: 1991-08-02
Granted: 2001-10-23
Abstract: Peptides of the formula X - A - B - C - Ser - D - E - F - G - Pro - H in which X is alkanoyl, A is optionally substituted D-Nal(2), D-Phe or D-Trp, B is optionally substituted D-Phe, C is D-Pal(3) or optionally substituted D-Phe or D-Trp, and D is Tyr or His, E is D-Ser (R1), F is Leu, Trp or Phe, G is L-Ser(R1), H is Gly-NH2, D-Ala-NH2 or Azagly-NH2 and R1 is a glycosyl radical have an inhibitory effect on the formation of the gonadotropins lutropin and follitropin and thus also on the synthesis of testo-sterone and estrogen. A process for the preparation of these peptides is described.
Patent CA-2054728-C (CA)
Inventor: QUIJANO RODOLFO C
IPC: A61F2/24
Filed: 1990-05-31
Granted: 2003-07-29
Abstract: A biological valvular prosthesis (10) defined by a chemically fixed biological derived conduit (12) having at least one integ-rally formed tissue valve (14). The chemical fixation of the valve ensures that the leaflets (16), (18) remain open under normal for-ward blood flow conditions, but close under minimal backflow pressure. The biological valvular prostheses are useful in the re-placement of venous valves and other biological valves. The biological valvular prosthesis may also be in the form of a tubular conduit bearing on tissue valve.
Patent CA-2059887-C (CA)
Title: Frequency doubling and mixing circuit
Inventor: KIMURA KATSUJI
IPC: H03D7/14
Filed: 1992-01-23
Granted: 1996-12-10
Abstract: Disclosed is a frequency doubling and mixing circuit capable of effecting frequency doubling operation and mixing operation with one unit of circuit. It includes a first set of differential transistor-pair which have emitters connected in common and an emitter size ratio of K:1 (K is larger than 1), and a second set of differential transistor-pair which similarly have emitters connected in common and an emitter size ratio of K:1. These two sets of differential transistor - pairs have respective constant electric currents supplied. In addition, it has a differential amplifying circuit which is driven by a differential current between the common collector output of one transistor of the first set of differential transistor-pair and one transistor of the second set of differential transistor-pair and the common collector output between the other transistor of the first set of differential transistor-pair and the other transistor of the second set of differential transistor-pair. A signal to be doubled is supplied across the common base connecting points of the transistors which are different in emitter size, a mixing signal is supplied from a differential input terminal of said differential amplifying circuit, and a circuit output is taken out from an output terminal or said differential amplifying circuit.
Patent CA-2060146-C (CA)
Inventor: GRILLIOT WILLIAM L
IPC: A41D27/10
Filed: 1992-01-28
Granted: 2003-05-13
Abstract: Protective shield structure for the sleeve of a firefighter's coat. The protective shield struc-ture is in the form of a curved member which is attached to the end portion of the sleeve of the firefighter's coat. The protective shield structure is positioned above a part of a glove worn by the firefighter adjacent the end of the sleeve of the firefighter's coat. The pro-tective shield structure thus prevents the entry of water and other material into the glove as the firefighter is engaged in firefighting activity.
Patent CA-2067483-C (CA)
Title: Process for removal of copper ions from aqueous effluent
Inventor: CATLIN JOSEPH C
IPC: C22B15/00
Filed: 1992-02-07
Granted: 2002-07-16
Abstract: This invention relates to a process for removing copper ions from highly acidic waste water generated during the manufacture of dyes or pigments or intermediates thereof. The waste water is exposed at a pH less than about 1 to a bed of suspended iron particles, preferably a fluidized bed of iron particles, having a particle size of from about 200 to about 950 micrometers.
Patent CA-2072853-C (CA)
Title: Elastic warp knitted fabric and method of manufacturing same
Inventor: KONDOU TOSHIYUKI
IPC: D06B3/28
Filed: 1992-06-30
Granted: 1995-03-14
Abstract: An elastic warp knitted fabric having a pulling out force for pulling out an elastic yarn from the knitted fabric of 30 g or more, and in which a shape of a sinker loop of a nonelastic yarn is maintained as a bulge shape after an application of a dyeing and finishing treatment. This elastic warp knitted fabric can be manufactured by using a specially prepared dyeing and finishing treatment, so that the sinker loop of the nonelastic yarn can be maintained in the treatment.
Patent CA-2078822-C (CA)
Title: Open mesh carrying bag and method of making
Inventor: ALBARELLI JOSEPH M
IPC: B65D33/28
Filed: 1992-09-22
Granted: 1998-07-21
Abstract: An open mesh carrying bag having a drawstring closure is constructed of an open mesh material provided with a hem at the closure, the hem including a folded-over portion of the material overlapping a further portion of the material, the folded-over portion and the overlapped further portion being secured together in the hem by the drawstring of the drawstring closure, which drawstring is threaded through registered mesh openings in the folded-over portion and in the overlapped further portion to secure together the folded-over portion and the overlapped further portion and to serve as a carrying handle while enabling selective contraction and closing of the drawstring closure by drawing upon the drawstring.
Patent CA-2086020-C (CA)
Title: Composite implant with metallic braid
Inventor: CHU HELEN S
IPC: B29C70/22
Filed: 1992-11-04
Granted: 2003-09-23
Abstract: A bone implant includes two non-metallic layers and an inner layer composed of metallic wire. The metallic wire enhances the attachment of the various layers and makes the implant visible on a radiogram.
Patent CA-2086283-C (CA)
Title: Low-yield-ratio high-strength hot-rolled steel sheet and method of manufacturing the same
Inventor: MASUI SUSUMU
IPC: C22C38/00
Filed: 1992-12-24
Granted: 1997-05-20
Abstract: A low-yield-ratio high-strength hot-rolled steel sheet having the advantageous features of both conventional precipitation-strengthened steel and structure-strengthened steel and free from the drawbacks of these conventional steels, and a manufacturing method characterized in hot-rolling such a steel sheet.  The steel sheet has an upper limit of C content of about 0.18 wt%, and the lower C content limit approximately satisfies C  0.05 + Ti/4 + Nb/8 in relationship with the content of Ti and/or Nb.  The steel sheet also contains about 0.5 to 2.5 wt% Si and has a structure essentially formed of ferrite in which a carbide of Ti and/or Nb is precipitated, martensite and retained austenite.
Patent CA-2087591-C (CA)
Title: Pyrimidine-3-oxide used for reducing hair loss; topical compositions used therefor
Inventor: HOCQUAUX MICHEL
IPC: A61P17/14
Filed: 1991-07-19
Granted: 2006-05-23
Abstract: The invention relates to a composition for the treatment of hair fall, containing in a physiologically acceptable medium appropriate for a topical application at least one compound having formula (I) wherein R1 is a methyl group or NHR4 wherein R4 is a C1-C4 alkyl group or hydrogen; R2 is hydrogen or a group NHR4 wherein R4 has the same signification as hereabove; R2 may also represent methyl when R1 represents methyl; when R1 represents NH2, R2 cannot be hydrogen; R3 may represent a hydrogen atom, a C1-C4 alkyl group which may optionally carry: a group OR5 wherein R5 is a C1-C4 alkyl group, a benzenic nucleus optionally substituted by one or a plurality of C1-C4 alkoxy groups, R3 may also represent a halogen atom or a nitro or amino group, and the physiologically acceptable acid addition salts.
Patent CA-2091864-C (CA)
Title: Process for producing halogenophenoxyfatty acid derivatives by selective halogenation and halogenophenoxyfatty acid derivatives
Inventor: HINO TOMOKAZU
IPC: C07D295/185
Filed: 1993-03-17
Granted: 1999-09-07
Abstract: Disclosed are a process for producing a halogenophenoxyfatty acid derivative represented by the formula (I): (see fig. I) [wherein R is CN, -CONR3R4 (in which R3 and R4 are H, alkyl, phenyl, benzyl or the like or together form alkylene) or -COAR5 (in which R5 is H, alkyl, phenyl, benzyl or the like and A is O or S), R1 and R2 are H or alkyl, X is halogen or alkyl and Y is halogen] which comprises selectively halogenating a phenoxyfatty acid represented by the following formula: (see fig. II) with a halogenating agent; and a novel halogenophenoxyfatty acid derivative represented by the formula: (see fig. III) [wherein R', R1', R2', X' and Y' have the meanings similar to R, R1, R2, X and Y]. The halogenophenoxyfatty acid derivative is useful as intermediate for producing herbicide or the like.
Patent CA-2092284-C (CA)
Inventor: BERGMANN WOLFGANG
IPC: C07F9/38
Filed: 1993-03-23
Granted: 2003-02-11
Abstract: A conditioning shampoo composition comprising: (a) an anionic cleansing surfactant, such as an alkyl ether sulfate or an alkyl sulfate, like sodium lauryl ether sulfate or ammonium lauryl sulfate; (b) a water-insoluble conditioning agent, such as a silicone compound or a hydrocarbon compound, like a polydimethylsiloxane; (c) an emulsifying composition comprising (i) a polyhydric compound, such as a glycol, a triol or a polyol, and (ii) a hydrophilic quaternary ammonium compound, such as a quaternary ammonium compound including a fatty amidoalkyl substituent, like a long chain alkamidopropyl quaternary ammonium chloride or an anionic emulsifying surfactant having the general structural formula:   R1-O-(A)x-CH2-Y- M+ , (I) wherein R1 is an alkyl or an aralkyl group wherein the alkyl group includes about 6 to about 22 carbon atoms, A is an alkylene oxide moiety wherein the alkylene group includes one to about four carbon atoms, x is a number in the range of 4 to about 50, Y is sulfate, sulfonate, carbonate or carboxylate, and M is selected from the group consisting of hydrogen, an alkali metal, an alkaline earth metal, ammonium, an alkylammonium or a hydroxyalkylammonium, wherein the alkyl group includes one to about four carbon atoms; and (d) a suspending agent, in (e) a suitable carrier, that effectively resists phase separation and that cleanses the hair and imparts improved wet stage and improved dry stage conditioning properties to the hair in a single application of the composition is disclosed.
Patent CA-2094525-C (CA)
Inventor: LUKEN WILLIAM LOUIS
IPC: G06T15/50
Filed: 1993-04-21
Granted: 1998-10-27
Abstract: Shading values are generated for the vertices of a polygon clipped by  a view volume without  performing unnecessary lighting calculations for polygons lying entirely outside the view volume.  Each polygon vertex is transformed and tested to determine whether it is within the view volume. If a tested vertex lies within the view volume,  lighting calculations are performed for that vertex.  If the polygon lies  entirely  outside  the  view  volume,  no  lighting calculations are performed for any of the vertices of the polygon, and only a subset of the coordinate transformation calculation  is  performed.  Complete transformation  and lighting  calculations  are  performed  for  vertices  lying outside the view volume only if necessary for determining by interpolation  the  values  for  new  vertices  formed  by clipping.