baber/WOPTO huggingface dataset:
Patent CA-2070315-A1 (CA)
Title: Recovery of metal from an ore
Inventor: O'BRIEN ROBERT N
IPC: C22B3/46
Filed: 1992-06-03
Abstract: ABSTRACT OF THE DISCLOSURE        The  process  is  a  hydrometallurgical  process consisting of two parts:  a leaching process conducted at temperatures in the range of 115 to 120 C and at slightly below one atmosphere in which a concentrate (or very rich ore) is subjected to a solution of 50% by volume sulfuric acid and 3 M ammonium nitrate for 10 to 20 minutes (in the batch operation).  Most of the Fe present is deposited as an iron ammonium sulfate, the copper as cuprous ammonium sulfate, the arsenic as arsenious oxide, about 2/3 of the sulfur as flowers of sulfur, the silver as silver sulfate, the gold in the metallic state.  The hot solution contains all of the Zn, about 1/2 of the Fe and a small amount of the copper as well as any Ni, Co, Mo etc.  The solution is cooled in an open heat exchanger (the excess heat returned to the leach tank) some water is evaporated and the wash water from the tailings added before the Zn electrowinning stage.  The electrowinning also reoxidizes the nitrogen oxides to nitrate ion and the barren solution is returned to the leach tanks.  The remaining Fe, S, Cu, Ag, Au and As  are  selectively solubilized  for  separating.   The uniqueness of the process is that the Zn electrowinning reoxidizes the nitrate and does not require elimination of nitrate, the copper is electrowon separately and up to 1/2 of the copper is produced as copper powder, the other 50% is electrowon for a saving of about one half the power and any other metal, precious,  or base can be separately treated, plus no polluting effluents are released.
Patent CA-2072814-A1 (CA)
Inventor: CARTER ADRIAN
IPC: A61K31/435
Filed: 1992-06-30
Abstract: The present invention relates to new benzomorphan derivatives of general formula (T)   processes for their preparation and their use as pharmaceutical compositions for treating cerebral ischaemia of various origins, epilepsy and neurodegenerative diseases.
Patent CA-2073523-A1 (CA)
Inventor: PENNETREAU PASCAL
IPC: B01J27/135
Filed: 1992-07-09
Abstract: Procédé pour la préparation de 1,1-dichloro-1,3,3,3-tétrafluoropropane L'invention concerne un procédé pour la préparation de 1,1dichloro-1,3,3,3-tétrafluoropropane par réaction en phase liquide de 1,1,1,3,3,3-hexachloropropane avec du fluorure d'hydrogène, en présence d'un catalyseur. Pas de figure.
Patent CA-2079311-A1 (CA)
Inventor: WENZ GERHARD
IPC: C09J4/00
Filed: 1991-03-18
Abstract: The setting properties of an .alpha.-cyanoacrylate adhesive composition are accelerated by adding thereto a hydroxyl group derivative of an .alpha.-, .beta.- or ~- cyclodextrin which is at least partly soluble in the .alpha.-cyanoacrylate.
Patent CA-2080036-A1 (CA)
Title: Child resistant compliance device
Inventor: GIBILISCO KENNETH J
IPC: A61J7/02
Filed: 1992-10-07
Abstract: TITLE OF THE INVENTION         CHILD RESISTANT COMPLIANCE DEVICE           ABSTRACT OF THE INVENTION       This invention relates to a novel child resistant compliance device comprising a transparent or opaque sliding lid, an elongated base or tray having inserted therein trays consisting of 1-3 rows capable of containing from 2-10 tablets, capsules or desired substance in solid form per row, a means for allowing said tablet, capsule or desire substance to exit from said device and a means for sequentially delivering additional tablets or capsules from said device.
Patent CA-2081405-A1 (CA)
Title: Video signal quantization for an mpeg like coding environment
Inventor: PURI ATUL
IPC: H04N7/50
Filed: 1992-10-26
Abstract: IMPROVED VIDEO SIGNAL QUANTIZATION FOR AN MPEG           LIKE CODING ENVIRONMENT Abstract A quantization parameter for use in encoding a region of an image is developed from a) a categorization of the region into one of a predetermined plurality of perceptual noise sensitivity (PNS) classes, b) a level of psycho-visual quality that can be achieved for the encoded version of the image, the level being selected from among a plurality of predetermined levels, and c) a prestored empirically derived model of the relationship between the PNS classes, the psycho-visual quality levels and the values of the quantization parameter. PNS indicates the amount of noise that would be tolerable to a viewer of the region, i.e., the perceptual sensitivity of the region to noise. Some characteristics on which PNS classes may be based are: spatial activity, speed of motion, brightness of the region, importance of the region in a particular context, the presence of edges within the region and the texture of the region, e.g., from "flat" to "highly textured". PNS classes that include combinations of the characteristics of a region of the image may also be defined. The PNS classes employed are selected by the implementor and may be determined empirically. The psych-visual quality of an encoded image is the quality, as perceived by a viewer, of the version of the image that is reconstructed from the encoded image. It is determined from the complexity of the image and the bit-rate available to encode the image.
Patent CA-2081698-A1 (CA)
Inventor: CANNAN THOMAS R
IPC: C01B39/40
Filed: 1992-10-29
Abstract: Zeolite beta is synthesized hydrothermally from an aqueous reaction mixture containing the conventional reactive sources of SiO2, Al2O3 and Na2O tetraethylammonium halide as the source of the crystallization directing tetraethylammonium ions and diethanolamine as the agent providing the increased basicity necessary for the formation of zeolite beta crystals. Seed crystals of zeolite beta are optionally employed to shorten the crystallization period.
Patent CA-2082921-A1 (CA)
Title: Self-supportive reflective insulation
Inventor: HAFERS LOUIS
IPC: E04B2/74
Filed: 1991-05-13
Abstract: The reflective insulation unit has a rigid frame (2) consisting of a four-sided corrugated cardboard structure which is generally rectangular in cross-section, the top (4) and bottom (6) being sized to closely fit within the dimensions of a construction bay.  Multiple sheets of paper and foil (16, 18) are attached to the inside surfaces (12, 14) of the sides so that the sheets are parallel to the top and bottom of the frame and to each other with a fixed spacing between the sheets. For shipping and storage purposes the frame may be folded at the corners and flattened so that the sides become parallel with the top, bottom and sheets. For installation, with the sides at right angles to the top and bottom, end pieces consisting of corrugated cardboard of the same dimension as the cross-section of the frame with tabs or flaps (23, 24, 25) folded at its edges are inserted into the open ends of the frame forming the fifth and sixth sides of a box and creating a self-framed insulating unit. The completed insulating unit may be set in place between the beams of the structure without any means of fastening to the beam, but merely a support to prevent the unit from falling.
Patent CA-2083226-A1 (CA)
IPC: E05D7/04
Filed: 1992-11-18
Abstract: A gate hinge member is designed for attachment to a metal T-post fence post. The gate hinge comprises at least one pair of first and second L-shaped hinge members, which are secured by means of a U-shaped fastener to the T-post in a tight wedged relationship. The spacing between the hinge members is selected to accommodate a hinge pin, which is passed through a pair of spaced holes in hinge-pin holding plates of the first and second hinge members. The hinge-pin holding plates extend outwardly perpendicular to the T-post. The hingepin is adapted to be passed through a mating cylindrical hinge member on the gate to pivotally secure the gate in place between the hinge members. After assembly, the hinge pin is releaseably secured in place by means of cotter pins passed through holes adjacent each of the ends of the hinge pin. The gate hinge may be placed in any vertical position on the face of a T-post, and cannot accidently be dismantled.
Patent CA-2083962-A1 (CA)
Title: Aromatic polyamide fiber-polyester fiber-blended spun yarn fabric
Inventor: TANAKA MAKOTO
IPC: D02G3/04
Filed: 1991-06-11
Abstract: ABSTRACT      A fiber fabric useful for flame-resistant garment is composed of yarns comprising a blend of 65 to 95% by weight of an aromatic polyamide fiber-containing fiber component with 5 to 40% by weight of a polyester fiber component; the aromatic polyamide fiber-containing fiber component comprising 50 to 100% by weight of aromatic polyamide fibers and 0 to 50% by weight of cellulose fibers and the fiber fabric having a limiting oxygen index of 26 or more.
Patent CA-2084879-A1 (CA)
Inventor: SANKEY JOHN P
IPC: A01N41/04
Filed: 1991-06-07
Abstract: 2084879 9118876 PCTABS00008 A safe and effective selection of compounds suitable for bleaching or disinfection or incorporation in compositions for such purposes comprises sulphoperoxyacids which satisfy Formula (I), in which the carboxylic acid substituent is bonded directly to the benzene nucleus or represents an alkylene group, preferably containing a moiety of at least 3 linear carbons, which conveniently can comprise its backbone, R'' represents at least one alkyl group and the total number of carbon atoms in R' + R'' is from 4 to 18, and in which the -CO3H and -SO3M substituents are separated by at least 3 carbons linearly, and M represents an alkali metal.  Preferably, the sulphoperoxyacid is 3-sulpho-4-n pentyl-perbenzoic acid, monopotassium salt, or 3-sulpho-4-n heptyl-perbenzoic acid, monopotassium salt or 6-(3-methyl-4-sulpho-phenyl)-perhexanoic acid, monopotassium salt or 6-(3,5-dimethyl-2-sulpho-phenyl)-perhexanoic acid, monopotassium or monosodium salt. An alternative selection of sulphoperoxyacids satisfy Formula (II), in which Ra is an alkylene group, Rb is an alkyl group and Rc is hydrogen or an alkyl group such that the linear spacing between the sulpho group and the peroxycarboxylic acid group is at least 3 carbons and the total carbon content is from 12 to 24 carbon atoms and M  represents an alkali metal. Precursor aromatic carboxylic acids containing a substituent of formula -(C5H10)-CO2H which can thereafter be sulphonated and peroxidised can themselves be made by reacting the corresponding compound comprising an aromatic hydrocarbon, optionally substituted by an electron donating group with caprolactone and aluminium chloride, preferably at a temperature of from 30 to 50 ·C.
Patent CA-2085042-A1 (CA)
Inventor: KOONTZ HARRY S
IPC: H05B3/84
Filed: 1992-12-10
Abstract: An electrical resistance heated window having at least three heatable zones and at least one of the heatable zones is generally centrally located on the window and can be heated faster to a higher temperature than the other of the zones for faster defogging and deicing of that particular zone.
Patent CA-2087384-A1 (CA)
Inventor: TRAVERS CHRISTINE
IPC: C10G45/64
Filed: 1993-01-15
Abstract: REDUCTION DE LA TENEUR EN BENZENE DANS LES ESSENCES Invention de Christine TRAVERS, Patrick SARRAZIN, Jean Marie DEVES, Christian MARCILLY et Philippe TRAVERS L'invention concerne un procédé de réduction de la teneur en benzène etd'isomérisation de paraffines dans lequel on effectue une isomérisation du mélange (a) de la charge caractérisée par une composition pondérale comprise dans les intervalles suivants: ? entre 40 et 80 % de paraffines ? entre 0,5 et 7 % de naphtènes ? entre 6 et 45 % d'aromatiques et une température maximale de distillation comprise entre 70 et 90 .degree.C, et (b) d'une coupe C5 - C6 de distillation directe, en présence d'un catalyseur d'isomérisation.
Patent CA-2089583-A1 (CA)
Title: Field-effect transistor and process for fabricating the same
Inventor: NAKAJIMA SHIGERU
IPC: H01L29/10
Filed: 1993-02-16
Abstract: ABSTRACT OF THE DISCLOSURE    The field-effect transistor according to this invention comprises an active layer containing an impurity in a high concentration and being a thin film, an undoped cap layer formed on the active layer, formed of the same material as the active layer, containing an impurity in a low concentration or no impurity and having a planar surface, a gate electrode and ohmic electrodes formed on the planar cap layer, low ohmic regions to be a source region and a drain region, formed in self-alignment with the gate electrode and containing an impurity in a high concentration.  As a result, the disuniformity of the device characteristics resulting from the recess-etching, which has been conventionally found, does not take place. Higher fabrication yields can be attained.  Furthermore, since the respective layers and the regions of the FET are formed of the same material, the problem of the diffusion of constituent atoms on the interfaces between the respective layers and the regions is absent, and the interfaces do not deteriorate.  In addition, since the low ohmic regions to be the source region and the drain region are formed in self-alignment with the gate electrode, a low source resistance can be attained.
Patent CA-2091013-A1 (CA)
Title: Single mode fiber optic variable attenuator
Inventor: CARON BERNARD G
IPC: G02B26/02
Filed: 1993-03-04
Abstract: ABSTRACT     A continuously variable fiber optic attenuator 10, 110 particularly for attenuating single mode fibers, has means 20, 120 for supporting a section 25, 125 of an optical fiber 24, 124 substantially along the length of the section 25, 125 and means 22, 122 for bending at least a portion of the supported optical fiber section 25, 125 in a controlled manner for attenuating light passing through the optical fiber 24, 124.  Preferably, the support means 20, 120 comprises a deformable support means such as a spring 15, 115 or an elastomeric body 71 for supporting the optical fiber 24, 124 as it is bent. Most preferably, the deformable support means supports a section 25, 125 of optical fiber 24, 124 formed in one or more loops around the deformable support means, and the bending means is a plunger 22, 122 movable to an extended position pressing against the support means 20, 120 to bend portions of the loops of optical fiber 24, 124 in a controlled manner.  The fiber optic attenuator 10, 110 of the present invention provides accurate control over the amount of attenuation of the light passing through the fiber 24, 124 without damaging the optical fiber 24, 124 or the signal passing therethrough.
Patent CA-2092460-A1 (CA)
Inventor: LEWIS JAMES H
IPC: B60P1/42
Filed: 1993-03-25
Abstract: ABSTRACT:     Apparatus for the application of deicing material to road surfaces which is typically mounted in place of the tailgate on a pickup truck equipped with an articulating dump box. The apparatus is powered by a gas motor with means for maintaining a  level orientation as the dump box is inclined. The apparatus is provided with means for driving an auger and a spinner at different relative speeds and at an angle of 90 deg. to each other.
Patent CA-2093541-A1 (CA)
Title: Power supply controller for controlling supply of a load, and a method thereof
Inventor: TARDIO DON
IPC: G05F1/66
Filed: 1993-04-06
Abstract: ABSTRACT OF THE DISCLOSURE           The power supply controller is for controlling supply of a first load with respect to an AC power voltage applied to a  second  load having  a predetermined power consumption rating, the second load being connected to a control element which controls operation of the second load. The controller comprises  a first power supply detector having input terminals for detecting when the AC power voltage is applied to the second load and generating a first signal accordingly; and a first power switcher having a first power switch connectable in series with the first load,  for supplying the  first  load with  the AC power voltage, and first switch control for controlling conduction of the power switch in response of the signal generated by the power supply detector, whereby the first load which has any power consumption rating is also operated by means of the control element.  The invention is also concerned with the method thereof.
Patent CA-2094876-A1 (CA)
Title: Fish fin remover
Inventor: KUDO NOBUO
IPC: A22C25/08
Filed: 1993-04-26
Abstract: A fish fin remover according to the present invention is capable of guiding a fish f n to be removed to the rotary blade thereof without difficulty and of cutting it with the same at its root accurately. In this fish fin remover, a guide frame has a step to allow the circumferential edge of the rotary blade to be accommodated so that the bottom of the guide frame across a fin pass area of the guide frame is substantially coplanar with the lower surface of the rotary blade.
Patent CA-2096799-A1 (CA)
Title: Laser with longitudinal mode selection
Inventor: HUBER DAVID R
IPC: H04B10/43
Filed: 1993-05-21
Abstract: A laser is fabricated from an optical transmission medium having a laser cavity with an rare earth (e. g. Erbium) doped portion. At least one longitudinal. mode is suppressed using a plurality of series coupled Fabry-Perot cavities, an optical grating, or a combination thereof. Ring lasers, Sagnac cavity lasers, Fox-Smith cavity lasers, and linear structures are disclosed.
Patent CA-2098197-A1 (CA)
Title: Carpet cleaning composition
Inventor: OSBERGHAUS RAINER
IPC: C11D3/00
Filed: 1991-12-02
Abstract: The substantially aqueous carpet-cleaning concentrate proposed contains an alkali-metal or ammonium salt of sulphonated oleic acid as the surfactant component. The cleaning agent produces particularly small quantities of foam in the conditions of use and is suitable for cleaning large areas of textile material, in particular fitted carpets, preferably using a spray-extraction cleaner.
Patent CA-2100640-A1 (CA)
Title: Substitute benzoate derivatives
Inventor: MATSUTANI SHIGERU
IPC: A61K31/24
Filed: 1993-07-15
Abstract: Abstract The present invention relates to the compounds of the formula:                 in which R1, R2, R3, R4, R5, R6, R7, and R8 are independently hydrogen, lower alkyl which is optionally substituted, lower alkoxy which is optionally substituted, hydroxy, acyloxy, or halogen; R9 is hydrogen, hydroxy, acyloxy, lower alkyl which is optionally substituted, lower alkoxy which is optionally substituted, or lower alkylamino which is optionally substituted; E1 is hydrogen, or an ester residue; m is an integer of from 1 to 4; or a pharmaceutically acceptable salt thereof. The compounds of the present invention exhibit phospholipase A2 inhibitory activity, and can be used in treating inflammatory conditions.
Patent CA-2102840-A1 (CA)
Title: Height-adjustable support especially for motor homes
Inventor: KNEILE KARL
IPC: B60S9/08
Filed: 1993-11-10
Abstract: Abstract of the Disclosure A height-adjustable support has a bearing member for connecting the support to a vehicle.          A support member is  connected  to  the bearing member so as to pivotable between a rest position and a support position.  A follower is pivotably connected to the bearing member and engages the support member so as to entrain the support member at least in one direction of pivoting between the rest position  and the  support position.   The height-adjustable support also has a drive unit for pivoting the support member.  The support is especially suitable for supporting motor homes or trailers.
Patent CA-2104734-A1 (CA)
Title: Analog timepiece able to display additional information
Inventor: KOCH DANIEL
IPC: G04C3/00
Filed: 1993-08-24
Abstract: ABSTRACT     An analog timepiece has an hour and a minute hand which may show either the time in a normal manner or information other than the time. When the timepiece is in its normal time display mode, a display function may be activated to display information other than the time by means of external command means. When this function is activated, the hands are superimposed and selectively occupy together the same angular position representative of the information apart from an indication of the time.
Patent CA-2107399-A1 (CA)
Inventor: GURAK RONALD W
IPC: B65B13/20
Filed: 1993-09-30
Abstract: An improved power strapping machine comprising a strapping device and a soft touch package compression device.  The strapping device includes plurality of coils for supplying strap to a guide apparatus.  A chute apparatus for routing strap around an article or package to be strapped is connected to the guide apparatus.  The machine includes sensors and a control circuit adapted to operate the machine continuously without the need to stop production, since when one coil is out of strap or a misfeed occurs, the machine will automatically load another coil of strap and continue strapping packages.  The soft touch package compression device uses pneumatic-drive chain drive systems for moving soft belts up and down.  The soft belts compress the package so that the strapping device can place a tight strap around the package.
Patent CA-2108550-A1 (CA)
Title: Laminated hook fastener and method of making same
IPC: B29C59/02
Filed: 1992-07-28
Abstract: A laminated hook fastener and a method for making a laminated extruded hook fastener strip on a roll having hook forming cavities in its surface by extruding plastic material into the interface between the forming roll and a second strip carried by a backing roll is provided. The second strip is firmly bonded to the fastener strip on the side opposite the formed hooks.
Patent CA-2110755-A1 (CA)
Title: Slide surface construction formed of aggregate of fe crystals having body-centered cubic structure
Inventor: FUJISAWA YOSHIKAZU
IPC: F16J10/04
Filed: 1993-12-06
Abstract: A slide surface construction is formed of an aggregate of Fe crystals  having  a  body-centered  cubic  structure.  The aggregate includes  (3hh0)  oriented metal crystals with their (3hh0)  planes  (by Miller indices)  oriented toward a  slide surface. The content S of said (3hh0) oriented metal crystals is  set in a range represented by S ~ 40%.  This makes  it possible to provide a slide surface construction which has a predetermined hardness and an excellent wear resistance and ensures that the wearing of a mating member having a lower hardness can be suppressed.
Patent CA-2111148-A1 (CA)
Title: Connector assembly
Inventor: MORLION DANNY
IPC: H01R13/193
Filed: 1993-12-10
Abstract: A connector assembly for interconnecting optical and/or electrical conductors comprises a first connector part with a first guiding plate with one or more guiding channels for first conductors and a second connector part to be coupled with the first connector part and having a second guiding plate with one or more guiding channels provided in a corresponding manner for second conductors to be connected with the first conductors. The guiding plates comprise positioning means for mutually positioning the guiding plates in the coupled position of the connector parts, said positioning means comprising a first lug and a first slot with cooperating straight reference surfaces extending in x-direction and a second lug and second slot with cooperating straight reference surfaces extending in y-direction. All said reference surfaces are located at a predetermined location with respect to the guiding channels. The second guiding plate is mounted in a housing moveable in x-, y- and z-directions and wherein means are provided for exerting forces for pressing the cooperating reference surfaces and the guiding plates towards each other in the x-, y- and z-directions during coupling the connector parts. Said means include a surface formed at the second guiding plate, said surface enclosing an angle with the x-, y-and z-directions, wherein a spring means is provided exerting a force on the surface in one of these directions.
Patent CA-2111338-A1 (CA)
Title: New compounds and compositions useful as antifungal and antimycobacterial agents
Inventor: CLARK ALICE M
IPC: A61K31/4375
Filed: 1991-11-06
Abstract: New analogs of sampangine and cleistopholine, compositions and methods of preparation thereof, method of treating fungal and mycobacterial infections.