baber/WOPTO huggingface dataset:
Patent CA-2057597-A1 (CA)
Title: Low temperature degradation of galactomannans
Inventor: DAWSON JEFFREY C
IPC: C09K8/68
Filed: 1991-12-13
Abstract: A method is shown for fracturing a subterranean formation in which a hydratable polymer, crosslinking agent and breaker are combined to form a gelled fracturing fluid.  The pH of the fracturing fluid is initially raised above about 9.0 to deactivate the breaker.  A pH regulating substance is added to the fracturing fluid which slowly hydrolyzes to produce an acid, thereby dropping the breaker to produce a controlled break of the polymer gel.
Patent CA-2058050-A1 (CA)
Title: Electricity meter
Inventor: MANSER BEAT
IPC: G01R21/00
Filed: 1991-12-19
Abstract: Abstract The meter contains an arrangement for the option-al connection of its voltage circuit (L) to a current path (5)  or to a calibration system.  The arrangement comprises an opening (2), provided in the housing of the meter for inserting a contact device (3) connected to the calibration system, and a pivoting lever (H), which, on insertion of the contact device (3) into the said open-ing (2), can be moved from an operating position, con-necting the voltage circuit (L) to the current path (5), into  a  calibration  position  connecting  the  voltage circuit (L) to the calibration system.     In consequence, the arrangement can be changed over between the operating position and the calibration position at the minimum possible cost.                                     (Fig. 4)
Patent CA-2064220-A1 (CA)
Title: Method for preparing a metal hydroxide powder and powder thereby obtained
Inventor: KLEIN JEAN-PAUL
IPC: H01M4/26
Filed: 1991-06-18
Abstract: A method for preparing a metal hydroxide powder based on nickel hydroxide for an electrode of an electrochemical generator having an alkyline electrolyte, wherein a strong base, an ammonium salt and nickel, cobalt, cadmium and/or zinc salts in predetermined ratios are slowly and continuously placed with suitable stirring into a reactor, with a pH level stabilized at 9.2 +/- 0.1 and a temperature between 80 and 85  DEG C, whereafter the particles of the resulting precipitate are filtered, washed and dried.
Patent CA-2069275-A1 (CA)
Title: Anti-corrosion treatment
Inventor: JONES GARETH M
IPC: F16L21/02
Filed: 1992-05-22
Abstract: Abstract of the Disclosure The specification describes and claims a method of providing an anti-corrosion coating on steel.  The coating is formed by application of a silicone based foamable composition. Preferred compositions are formed by mixing ingredients selected to provide a cured foam having a density less than 150 Kg/m3 within 120 seconds of mixing at 20°C.  The compositions comprise polysiloxanes having alkylhydrogensiloxane units, silicon-bonded hydroxyl groups, and fluorinated groups and a hydrosilylation catalyst.
Patent CA-2070267-A1 (CA)
Title: Method and apparatus for recovering resources from discarded tires
Inventor: WU HAU Y
IPC: C08J11/12
Filed: 1992-06-02
Abstract: ABSTRACT OF THE DISCLOSURE      Method  and  apparatus  for  recovering  resources  from discarded tires without polluting the environment. First of all, discarded tires are collected in an tyre-loading unit, which is then conveniently loaded into a hermetic casing with a foldable wheeling system, with the help of a rail in the hermetic casing.  The hermetic casing has a wheeling system similar to that of tyre-loading unit so the former is easily wheeled into the heating shell of the heat-treatment unit. The tires inside the heating shell must be completely isolated from the air using hermetic and vacuuming devices before  heating  is  begun.  A  heat-treatment  unit  with  a heater   mounted  either  externally or  internally  to  the heating shell heats the loaded tires  so  they  decompose in the absence of oxygen; a pollutant-treatment unit filters and purifies  the pollutants  produced during the heating process, thereby minimizing pollution. The hermetic casing is heated to 450 °C  for about 1.5 hours until decomposition of the tires  is complete. Afterwards, tar collected in the storage tank  can be  directly transferred  for recycling; black ash and steel wool can be recovered from the frame of the tyre-loading unit. The black ash and steel wool can be easily separated manually for further treatment.
Patent CA-2070929-A1 (CA)
Title: Stabilizer ram for parabolic antenna
Inventor: GEARHART JOHN
IPC: H01Q1/12
Filed: 1992-06-10
Abstract: ABSTRACT       A stabilizer for a mounting structure for a parabolic antenna of the type being mounted on a base and having an actuator to adjust antenna position has arms adapted to extend and contract to permit adjustment of the length of the stabilizer to correspond with adjustment of the position of the antenna.  A brake is provided for locking the arms of the stabilizer in position relative to each other.  The brake is operated by an electromagnet and is engaged and disengaged by a signal from the motor used to actuate the actuator.  The stabilizer is particularly useful for providing additional support to an antenna to minimize damage due to wind and to maintain the antenna in a selected position.
Patent CA-2072638-A1 (CA)
IPC: C04B28/00
Filed: 1991-08-26
Abstract: 2072638 9204298 Le procédé décrit dans l'invention permet l'obtention d'un liant géopolymérique en poudre, employé pour le traitement ultra-rapide de matériaux, sols ou décharges minières, contenant des déchets toxiques. Ce dit liant géopolymérique possède un temps de prise égal ou supérieur à 30 minutes à la température de 20 ·C et une vitesse de durcissement permettant d'obtenir des résistances à la compression (Rc) égales ou supérieures à 15 MPa, après seulement 4 heures à 20 ·C, lorsqu'elles sont testées selon la norme standard appliquée aux mortiers de liants hydrauliques avec un rapport liant/sable égal à 0,38 et un rapport eau/liant compris entre 0,22 et 0,27. Le procédé de préparation inclut les trois éléments réactifs suivants: a) un oxyde alumino-silicate (Si2O5,Al2O2) ayant le cation Al en coordination (IV-V); b) un disilicate alcalin, de sodium et/ou de potassium, (Na2,K2)(H3SiO4)2; c) un silicate de calcium; les rapports molaires entre les trois éléments réactifs sont égaux ou compris entre (Na2,K2)(H3SiO4)2/(Si2O5,Al2O2) = 0,40 et 0,60, Ca++/(Si2O5,Al2O2) = 0,60 et 0,40 de telle sorte que (Na2,K2)(H3SiO4)2 + Ca++/(Si2O5,Al2O2) = 1,0 avec Ca++ désignant l'ion calcium appartenant à un silicate de calcium faiblement basique dont le rapport atomique Ca/Si est inférieur à 1.
Patent CA-2074329-A1 (CA)
Title: Powder coating composition containing a resin, a curing agent and zinc
Inventor: DURAND DOMINIQUE
IPC: C09D5/03
Filed: 1992-07-21
Abstract: The present invention relates to an improved powder coating composition comprising (a) a resin, (b) a curing agent and (c) zinc, wherein the zinc is a mixture of (c1) lamellar zinc and (c2) zinc dust.
Patent CA-2075416-A1 (CA)
Title: .alpha.-arylacrylic acid derivatives, their preparation and use for controlling pests and fungi
Inventor: KIRSTGEN REINHARD
IPC: C07D231/38
Filed: 1992-08-06
Abstract: O.Z. 0050/42599 .alpha.-Arylacrylic acid derivatives, their preparation and use for controlling pests and fungi ABSTRACT OF THE DISCLOSURE: .alpha.-Arylacrylic acid derivatives of the formula I                (I) where the substituents have the following meanings:  X    C, N Y    CR4, N, O, S Z    CR5, N, O, S n    0 to 4 R1   hydrogen, nitro, cyano, halogen;      alkyl, alkoxy, halogenated alkyl, halogenated alkoxy or alkylthio, or, when n is 2, 3 or 4, two adjacent substituents R1 may together denote a 1,3-butadien-1,4-diyl group which may be substituted;  R2   alkyl; halogenated alkyl, halogen, cyano, nitro, alkoxycarbonyl, dimethylamino, R2 additionally denotes hydrogen;  R3   hydrogen;     substituted or unsubstituted alkyl; a substituted or unsubstituted cyclic structure, which may contain, in addition to carbon atoms, one to three heteroatoms; or a substituted or unsubstituted aromatic system, which may contain, in addition to carbon atoms, one to four nitrogen atoms and one to three heteroatoms;       R4, R5   hydogen, alkyl; halogenated alkyl, halogen, cyano, nitro, dimethylamino, alkoxycarbonyl and pesticides and fungicidal agents containing these compounds.
Patent CA-2078795-A1 (CA)
Title: Voltage stabilizing circuit
Inventor: KIMURA YASUHIRO
IPC: G01R19/32
Filed: 1992-09-22
Abstract: A voltage stabilizing circuit comprising a voltage detecting circuit (11) for detecting a control voltage (Vr) in response to an output voltage (V3) of the voltage stabilizing circuit, and a control circuit (9) for stabilizing, based on the control voltage (Vr), the output voltage (V3) of the electronic device (10).  To remove the component of a base-emitter voltage from the control voltage, the voltage detecting circuit (11) includes a first series circuit (12) and a second series circuit (13) connected to each other in series.  The first series circuit consists of a first resistor (3) and a first transistor (4) connected in series.  The second series circuit consists of a second resistor (5) and a second transistor (6) connected in series.  The second transistor (6) is connected to function as a diode connection.  The first resistor and the second resistor have substantially the same resistances.  Thus the control voltage (Vr) is made to be substantially the same as the output voltage (V3).
Patent CA-2081954-A1 (CA)
Title: Process for the manufacture of pigments, especially fluorescent pigments
Inventor: MARCQ MICHEL J
IPC: C08L75/04
Filed: 1992-11-02
Abstract: Abstract Process for the manufacture of pigments, especially fluorescent pigments A process for the manufacture of pigments comprising a coloured composition incorporated in a poly condensation resin said resin not containing aldehyde derivatives, especially formaldehyde derivatives, wherein the reactants for the formation of said polycondensation resin and the coloured composition are introduced continuously into a reactor and are mixed, the mixture travels forward in the reactor and at the end of reaction the product is withdrawn continuously from the said reactor. The process is particularly suitable for the preparation of fluorescent pigments. The reactor used is preferably an extruder.   Also claimed are compositions comprising diketo-pyrrolo-pyrrole colourants and certain polyester or polyamide resins as well as a process for the preparation of said compositions.     (Fig.1)
Patent CA-2082225-A1 (CA)
Title: Process for the preparation of secondary amines
Inventor: VAN ZON ARIE
IPC: C10L10/18
Filed: 1992-11-05
Abstract: A B S T R A C T           PROCESS FOR THE PREPARATION OF SECONDARY AMINES      The invention provides a process for the preparation of a secondary amine which comprises reacting carbon monoxide, hydrogen, a selectively hydrogenated star-shaped polymer comprising a polyvinylaromatic nucleus and at least 4 polymeric arms linked to said nucleus wherein said polymeric arms are selected from the group consisting of:      (i)  hydrogenated homopolymers and hydrogenated copolymers of conjugated dienes; (ii) hydrogenated copolymers of conjugated dienes and monoalkenyl arenes; and (iii) mixtures thereof; and a primary amine derivative having a terminal -NH2 group and a terminal -NR1R2 group, wherein each of R1 and R2 independently represents a hydrogen atom or an alkyl group; in the presence of a suitable solvent and a catalyst system comprising a source of cationic rhodium; optionally a source of cationic ruthenium; an aromatic N-heterocyclic ligand and a source of an anion other than a halide; secondary amines obtainable by said process; and lubricating oil compositions, fuel compositions and additive concentrates containing said amines.     PS26/T1645FF.DOC
Patent CA-2085786-A1 (CA)
Title: Bifold mailer with return envelope
Inventor: SAUERWINE DEAN N
IPC: B42D5/02
Filed: 1992-12-18
Abstract: ABSTRACT OF THE DISCLOSURE      A mailer type business form and intermediate are constructed from a single quadrate sheet of paper having first through fourth edges and first and second fold lines, which cooperate to divide the sheet into four panels.  The first panel has a cutout positioned to overlie an outgoing address printed on the second panel, when the sheet is folded about the first fold line.  Reply address indicia, including bar coding, is printed on the second face of the second panel.  Two strips of transfer tape on the first face of the fourth panel cooperate to allow the second and fourth panels to be formed into a return envelope by the recipient.  A return envelope flap with rewettable adhesive strip is formed from a second panel.  Strips of heat or pressure activated adhesive are disposed adjacent the edges and/or first fold line of various panels in order to seal the sheet into a mailer when folded about the fold lines, and perforation lines are disposed adjacent each of the adhesive strips.
Patent CA-2087001-A1 (CA)
Inventor: MONTARGES JEAN
IPC: H04L12/56
Filed: 1993-01-08
Abstract: This process comprises the following steps: dividing all carrier frequencies constituting available frequency resources into unequal lots; an attribution to any site in the network, at the moment it joins the network, resulting in a frequency allocation request for a connection between this site and any other site, termed the site of first relation for the site considered, and previous to this allocation, of one of two possible complementary states, the said state being chosen so as to obtain complementary states for the site considered and for its site of first relation, and being kept for future links between the site considered and other sites in the network: and for any link to be established between two sites in the said network, a random frequency allocation in the largest of the said lots, if the sites considered are in complementary states, or in the smallest of the said lots if the sites considered are in identical states.
Patent CA-2087536-A1 (CA)
Title: Compositions based on active ingredients of hydrophobic drugs that can be sulubilized in an aqueous solvent
Inventor: CHEDID LOUIS
IPC: A61P31/04
Filed: 1991-07-18
Abstract: The invention relates to any composition caracterized in that it is comprised of: on the one hand, an active principle of a medicament or a pharmacologically active substance, water insoluble, said substance being substituted by at least one lipophylic group, and on the other hand, an osidic derivative of which at least one of the hydroxyl functions is substituted by one or a plurality of phosphate or sulphate group or groups, said compound being also substituted by a lipophylic group, the composition being capable of homogeneous solubilization or dispersion in an aqueous solvent. The invention also relates to the use of such compositions, particularly as pharmaceutical compositions dissolved in a physiologically acceptable aqueous solvent.
Patent CA-2088265-A1 (CA)
Inventor: TAKATA NOBUO
IPC: F16H29/08
Filed: 1992-06-01
Abstract: ABSTRACT     A stepless speed change gear that is small in size,  light in weight, simple in construction, secure in operation.  long in service life and capable of high-output speed changes. An input shaft crank (3) and an input side member (4) are mounted on an input shaft (1) and an output shaft (2) via a one-way clutch mechanism (100).  respectively,  and the respective members are coupled to each other by means of an input connecting rod (5) and an output connecting rod (6). Also, a speed-change link (7) is coupled to a junction point (B) of these links at one end thereof, and the other end thereof (Q) is allowed to move to any position within a certain range and to be fixed at that point. Also,  the one-way clutch is a rolling bearing clutch. Variable speed change can securely be obtained with a simple mechanism.  In a case where the rolling bearing clucth is used. high-output speed change is possible with the stepless speed change gear that is small in size and light in weight.
Patent CA-2089124-A1 (CA)
Title: Slot impingement for a photographic processing apparatus
Inventor: ROSENBURGH JOHN H
IPC: G03D3/13
Filed: 1993-02-09
Abstract: A SLOT IMPINGEMENT FOR A PHOTOGRAPHIC          PROCESSING APPARATUS                      ABSTRACT     An apparatus for processing photosensitive materials, which comprises: a tank through which a processing solution is pumped; a rack having integral means to facilitate its insertion and removal from the tank, the rack and the tank are relatively dimensioned so that a small volume for holding processing solution and photosensitive material is formed between the rack and the tank; means for circulating the processing solution through the small volume; and one or more slot nozzles coupled to the circulating means and located in the wall of the tank for controlling the velocity and amount of processing solution that dynamically impinges on the surface of the photosensitive material.
Patent CA-2093024-A1 (CA)
Title: Stripping liquid coatings
Inventor: TU CAT VO
IPC: B05C3/12
Filed: 1993-03-31
Abstract: ABSTRACT       A jet stripping apparatus comprises a stripping nozzle positioned to direct a stripping gas jet stream (11) against each side of a steel strip (7) emerging from a bath (8) of molten zinc or aluminium/zinc alloy with a layer (9) of bath material thereon, means to supply gas to said stripping nozzle at a pressure sufficient to liberate a relatively strong stripping jet stream (11) therefrom, and surface modifying means spaced closely below said stripping nozzle effective to smooth the surface of said layer (9) prior to it reaching the stripping jet stream (11). Said surface modifying means preferably comprise a smoothing nozzle positioned to direct a relatively weak surface modifying gas jet stream (18) against the layer (9) that is effective to smooth the layer but not to substantially affect the quantity of material passing it.
Patent CA-2098011-A1 (CA)
Inventor: JASPER STEVEN C
IPC: H04B1/707
Filed: 1992-08-14
Abstract: A quad 16 QAM transmission (132-136) and reception (600) methodology wherein a time domain pilot reference is advantageously associated therewith. There may be one or more such pilot references for each packet of multiple 16 QAM pulses (200). Depending upon the embodiment, each 16 QAM pulse can include a time domain pilot reference, or an estimated pilot reference (402 and 301) for that pulse can he determined either by reference to pilot references in other pulses sharing the same packet, or by reference to pilot references for other previously received 16 QAM pulses corresponding to that same pulse.
Patent CA-2098106-A1 (CA)
Title: Process for improving heat and mass transfers to and/or through a wall
Inventor: GOURLIA JEAN-PAUL
IPC: B01D61/00
Filed: 1992-10-08
Abstract: PCT No. PCT/FR92/00933 Sec. 371 Date Jun. 10, 1993 Sec. 102(e) Date Jun. 10, 1993 PCT Filed Oct. 8, 1992 PCT Pub. No. WO93/07433 PCT Pub. Date Apr. 15, 1993The invention relates to a method for improving heat and mass transfers to and/or through a wall, and if need be, to such a method applied to a permeable wall. The invention also concerns a wall and conductive material pair having improved heat and mass transfer characteristics. The method of the invention is useful for all techniques requiring both heat transfer and flow of gaseous phase to or through a wall.
Patent CA-2102121-A1 (CA)
Inventor: CASTALDI FRANK J
IPC: C02F3/28
Filed: 1992-09-24
Abstract: A method for improved slurry-phase bioremediatian treat-ment of organic sludge and mix-tures of organic sludge and organ-ics-contaminated soils by dissolv-ing the contaminants into an aque-ous phase and microbially degrad-ing same. A high solids slurry of the sludge and soils is formed with water and an active bio-slurry con-sisting of large populations of ac-climated hydrocarbon-utilizing bacteria and small amounts of bi-odegradation residue. The slurry is passed through a plurality of in-series bioreactors (2-6) in each of which a low hydraulic shear is maintained to promote the devel-opment of a large population of microorganisms that will form flocculent suspensions. The output from the series of bioreactors is flowed continuously or semicontinuously to a liquid-solids separator (7) to partition the mixed liquor bio-slurry from the biode-graded waste residue. The mixed liquor bio-slurry containing small amounts of biodegradation residue is returned to the slurry being processed for recycling. Off-gas components from the system are recirculated back to one or more of the bioreactors, to re-turn high volatility toxic constituents for increased microbial degradation and control of volatile toxic constituent emissions from the process. The related system is also disclosed and claimed.
Patent CA-2104767-A1 (CA)
Title: A chemiluminescent method for the quantitation of human dna
Inventor: REYNOLDS REBECCA L
IPC: C12Q1/68
Filed: 1993-08-24
Abstract: The present invention provides methods and reagents for the estimation of the quantity of human DNA contained in a sample. Immobilized sample DNA is hybridized to a biotinylated oligonucleotide probe that hybridizes to a human genomic or mitochondria DNA sequence. The subsequent binding of streptavidin-horseradish peroxidase to the bound probe allows for chemiluminescent detection using a luminol-based reagent and X-ray film. In addition, the present invention provides methods and reagents to assess the quality of DNA contained in a sample. The sample is first size fractionated by agarose gel electrophoresis, and then immobilized, hybridized to a biotinylated oligonucleotide probe, and detected using the chemiluminescent method as used in the quantity estimation methods of the present invention.
Patent CA-2105300-A1 (CA)
Title: Process for the development of binding mini-proteins
Inventor: LADNER ROBERT C
IPC: G01N33/566
Filed: 1992-02-27
Abstract: Genes encoding disulfide-bonded micro-proteins and metal ion-coordinated mini-proteins are semi-randomly mutagenized and expressed in suitable cells so as to result in the simultaneous display of the different mutant proteins on the surfaces of bacterial cells, spores or phage; the resulting display library is screened for members having the ability to bind to a target of interest.
Patent CA-2106547-A1 (CA)
Title: Twin pivot piston assembly
Inventor: HAMY NORBERT
IPC: F16C7/02
Filed: 1993-09-20
Abstract: ABSTRACT OF THE DISCLOSURE    A piston assembly comprising a piston rod for connection to a crankshaft and having at its upper end a pair of laterally displaced first and second convex bearing surfaces, a receiving cup formed on said piston head, said receiving cup having complementary first and second concave bearing surfaces that mate with said respective first and second convex bearing surfaces to form twin pivots such that during a first angularity of the piston rod, the piston rod pivots about a first pivot axis associated with said first convex bearing surface and during a second angularity of the piston rod, the piston rod pivots about a second pivot axis associated with said second convex bearing surface; said first and second concave bearing surfaces having respective centers of curvature coincident with the pivot axis of the opposed convex bearing surface such that during pivoting of the piston rod about one of said pivots the convex bearing surface associated with the other pivot remains in bearing contact with its associated concave bearing surface.
Patent CA-2109971-A1 (CA)
Inventor: MUELLER RUDOLF R M
IPC: A43B5/00
Filed: 1993-11-25
Abstract: A sheet metal part with at least one element introduced by a riveting process wherein the passage opening of the nut element is closed off by a stamped-out slug.