baber/WOPTO huggingface dataset:
Patent CA-2102539-A1 (CA)
Inventor: BUTTON CLARENCE E
IPC: A01K63/00
Filed: 1993-11-05
Abstract: ABSTRACT OF THE DISCLOSURE    A novel fyke net is provided herein.  It includes a trap body tunnel open at one end and including a plurality of inward narrowing funnels.  wings or leaders in the form of panels of vertically hung netting extend from the trap body and are adapted to be disposed along the river or lake bottom.  Wing supports in the form of stakes are adapted to be erected into the stream or lake bottom and are adapted to maintain the shape and position of the wings and to keep them erect in higher velocity water currents.  A collection bag in the form of an additional closed-end funnel of netting, situated behind the body of the net at the narrow end of the funnels.  This fyke net is used together with a holding cage.   Such holding cage includes a containment cage in the form of a frame of structural material and a mesh covering, and a flexible bladder attached to the containment cage, and into which a gas may be injected to provide buoyancy for the containment cage.
Patent CA-2103303-A1 (CA)
Title: Process for preparing 1,3-difluorobenzene
Inventor: SCHACH THOMAS
IPC: C07B39/00
Filed: 1993-11-17
Abstract: Abstract of the disclosure Process for preparing 1,3-difluorobenzene Process for preparing 1,3-difluorobenzene by means of the catalytic elimination of halogen from a 1,3-difluorohalo-benzene, by reacting a 1,3-difluorohalobenzene of the formula (1)         (1) in which R1 to R4 are H, Cl or Br, and at least one of the radicals R1 to R4 is Cl or Br,  in the presence of a palladium catalyst and of an amine, where appropriate in the presence of water or of an organic solvent which is inert towards the reactants and the reaction conditions, with hydrogen under pressure and at temperatures from about 70° to about 140°C.
Patent CA-2103336-A1 (CA)
Inventor: PECH DAVID J
IPC: F16B7/06
Filed: 1993-11-17
Abstract: A longitudinally divisible crane boom segment includes a plurality of sections that are easily transportable. The sections each include at least one chord member, and a plurality of partial lacing elements. Each partial lacing element has a first end permanently attached to the at least one chord member and a second end connectable to one or more corresponding ends of plurality of partial lacing elements attached to a chord member of another section. Preferably the partial lacing elements are connected by dovetail connectors.
Patent CA-2105923-A1 (CA)
Title: 7-isoindolinyl-quinolone derivatives and 7-isoindolinyl-naphthyridone derivatives
Inventor: PHILIPPS THOMAS
IPC: A61K31/4035
Filed: 1993-09-10
Abstract: The invention relates to novel quinolone derivatives and naphthyridone derivatives which are substituted in the 7-position by a partially hydrogenated isoindolinyl ring, to processes for their preparation and to antibacterial agents and feed additives containing them.      The compounds of the invention have the general formula (I): <SEE FOURMULA I> wherein A and R1 to R10 are defined in the description and claims.
Patent CA-2108163-A1 (CA)
Title: Moisture indicating molding resins
Inventor: MOSS ARTHUR ZENKER
IPC: C08K3/00
Filed: 1991-05-24
Abstract: Melt formable thermoplastic resins which exhibit a difference in color between their wet and dry states, processes for melt forming such resins, and the resulting melt formed shaped articles are provided.
Patent CA-2108508-A1 (CA)
Title: Procede de preparation de composes du type isocyanates aromatiques en phase gazeuse
Inventor: JOULAK FAOUZI
IPC: C07C263/10
Filed: 1993-10-15
Abstract: L'invention concerne un procédé de préparation de composés aromatiques substitués par au moins deux groupements isocyanates, caractérisé en ce que l'on met en contact, en phase gazeuse, des réactifs comprenant au moins un composé (A) comprenant au moins deux fonctions amine primaire et au moins un motif aromatique avec du phosgène, et en ce que la mise en contact de ces réactifs est effectuée dans un réacteur qui est dépourvu de mobile d'agitation.
Patent CA-2111618-A1 (CA)
Inventor: AGRAWAL RAKESH
IPC: F25J3/04
Filed: 1993-12-16
Abstract: The present invention relates to an improved cryogenic process for the separation of air to produce an oxygen product and a nitrogen product. The present invention employs a distillation column system with three distillation columns, a low pressure column, a medium pressure column and a high pressure column. The improved three column distillation system process comprises: (a) producing an oxygen product with a product purity of less than 98% purity oxygen and producing no argon product; (b) producing a gaseous nitrogen product which represents greater than 35% of the feed air and which is removed from the medium and/or high pressure columns; (c) recovering a major portion of the oxygen product from the low pressure column; and (d) condensing at least a portion of the high pressure nitrogen overhead from the high pressure column by heat exchange against a liquid stream in the medium pressure column and utilizing at least a portion of the condensed portion to provide reflux to the high pressure column.
Patent CA-2116910-A1 (CA)
Title: State of charge indicator for deep-cycle applications
Inventor: REHER MICHAEL T
IPC: G01R31/3835
Filed: 1994-03-03
Abstract: STATE OF CHARGE INDICATOR FOR DEEP-CYCLE APPLICATIONS A state of charge indicator (10) monitors a voltage produced by a depletable energy source (11) and provides an indication when the state of charge of the depletable energy source (11) falls below a predetermined threshold. The state of charge indicator (10) includes an input circuit (13) for sensing the voltage and producing a plurality of tap voltages. The state of charge indicator (10) further includes a monitor circuit (65) for comparing each tap voltage with a corresponding threshold voltage and producing a result for each tap voltage falling below its corresponding threshold. The state of charge indicator (10) still further includes a storage device (75, 95, 115) for storing each result and producing an accumulated status and an output circuit (152) for producing the indication when the accumulated status exceeds an accumulated status threshold.
Patent CA-2119583-A1 (CA)
Inventor: LARSEN NIELS A
IPC: E04D3/35
Filed: 1992-09-22
Abstract: A leadfree plate-shaped roof flashing material comprises a sandwich structure in which a stress damping and stabilizing layer (1) of ductile material is completely covered on one side and at least partly covered on the other side by preferably metallic foil sheetings (2, 3), e.g. of aluminium foil, designed with densely positioned flattened folded sections (4) having such a form, e.g. as closed inverted pleats, that the extreme material layer (4a) of each folded section gets into contact with the stress damping and stabilizing layer (1) only when the folded sections open in connection with deforming the flashing material to make it fit to the roofing.
Patent CA-2122339-A1 (CA)
Title: Twisted Ferroelectric Liquid Crystal Modulator
Inventor: PATEL JAYANTILAL S
IPC: G02F1/21
Filed: 1992-10-01
Abstract: A twisted ferroelectric liquid-crystal optical modulator in which a ferroelectric smectic C* liquid crystal (26) is filled into the gap between two alignment layers (18, 20) aligning the adjacent liquid crystal in two perpendicular directions parallel to the alignment layers.  The ferroelectric liquid crystal has a tilt angle of 45° and is aligned with the tilt angle parallel to the buffing direction of the alignment layer.  Thereby, the liquid-crystal molecules (32), absent any applied field from electrodes (14, 18), slowly twists through 90° across the gap, and the liquid crystal waveguides light linearly polarized by an input polarizer (22) so that it passes a perpendicularly arranged output polarizer (24).  However, a strong electric field causes the ferroelectric molecules to untwist and line up in parallel, thereby destroying waveguiding, and the cell does not transmit.  Intermediate voltages cause partial untwisting and partial waveguiding.  Thus, variations in the applied voltages can modulate the light according to a gray scale.
Patent CA-2123275-A1 (CA)
Inventor: KANZAWA SINICHI
IPC: H04Q3/58
Filed: 1994-05-10
Abstract: An electronic private branch exchange system with a message recording function comprises a private branch exchange with at least one office line and a plurality of extensions for selectively switching between the office line and the extensions and between the extensions, extension telephones connected to the extensions, and a recording unit for recording and reproducing speech transmitted and received by the extension telephones, wherein each of the extension telephones includes request input means for inputting desired requests including requests for recording and reproducing speech related to its own call, and request informing means for informing the electronic private branch exchange of the contents of the request inputted from the request input means, and the electronic private branch exchange includes recording management control means for providing control of the recording unit according to the contents of the request, the control including the recording and reproducing of the contents of speech, when the request is informed by at least one of the extension telephones.
Patent CA-2124313-A1 (CA)
Title: Box
Inventor: CORRELL JOHN D
IPC: B65D85/36
Filed: 1994-05-25
Abstract: BOX               ABSTRACT OF THE DISCLOSURE        A  one-piece  box  is  disclosed  which  is foldable from a flat blank to an erect box.  The box is provided with a corner interlock comprising a tab on the side wall extending through an opening in the front wall.  A cover interlock is provided using a single panel front wall having a tab which extends through an opening in the cover.  The box blanks may be cut from a single board in side-by-side nested relationship with a wall or flap of one box blank being of reduced height and receiving a protruding portion of the corresponding wall or flap of the adjacent box blank.
Patent CA-2126206-A1 (CA)
Title: Fiber-reactive dyes - applications with low salt
Inventor: PHILLIPS THOMAS S
IPC: D06P3/66
Filed: 1992-12-14
Abstract: A method for the exhaust dyeing of materials having hydroxy groups and materials containing carbonamide groups using a low salt content dye bath in conjunction with fiber reactive dyes exemplified by a dye of formula (I).
Patent CA-2127620-A1 (CA)
Title: Sensing magnetic recording on film of series scene indication and use thereof in a photofinishing system
Inventor: CLOUTIER ROBERT P
IPC: G03B27/80
Filed: 1990-09-07
Abstract: A series scene indication magnetically recorded adjacent appropriate frames in a strip of film by an autowind camera whenever it is in rapidfire mode are employed by a photofinishing station for using same print exposure value for one of the frames in the series to expose and print all of the frames in the same series.  However, the photofinisher computes individual print exposure values for those frames in a series having photosensiometric data significantly different from the photosensiometric data of the rest of the frames in the series.
Patent CA-2127854-A1 (CA)
Inventor: KIMURA KATSUJI
IPC: H03G11/08
Filed: 1994-07-12
Abstract: A logarithmic amplifying circuit has a reduced power dissipation and is suitable for application to an integrated circuit.  The logarithmic amplifying circuit has cascade-connected differential amplifiers, a rectifier connected to each of the amplifiers, and an adder for adding the output currents of the rectifiers.  Each of the rectifiers has a differential pair composed of a plurality of transistors emitter-coupled or source-coupled, a constant current source for a tail current of the differential pair, and an offset voltage source for superimposing a DC offset voltage on a differential input voltage to be supplied to the differential pair.
Patent CA-2130330-A1 (CA)
Title: Preparation of refractory materials from asbestos tailings
Inventor: HUARD YVAN
IPC: C04B35/20
Filed: 1993-02-19
Abstract: A process for producing especially high temperature refractory materials from asbestos tailings, or from calcined products produced from asbestos tailings. The process comprises grinding the asbestos tailings, or the calcined product, to a suitable particle \ size; mixing the ground particles with magnesium oxide or a magnesium oxide precursor, and heating the mixture to a temperature of at least 1200 °C for a suitable length of time to form a large proportion of forsterite in the resulting product. The amount of magnesium oxide or precursor should preferably be such that the MgO:SiO2 ratio in the starting materials is at least 1.2, which usually requires an amount in the range of 10 to 25 % by weight, based on the weight of the asbestos tailings. More-over, the particle size of the asbestos tailings or calcined product should preferably be in the range of -1.7 mm ~ 0.1 mm. The resulting refractory product has a fusion point above about 1660 °C  and can be used in contact with molten steel or the like, particularly when mixed with a bridging agent such as graphite.
Patent CA-2130913-A1 (CA)
Inventor: MUELLER BRUCE M
IPC: B65D47/20
Filed: 1993-12-10
Abstract: A dispensing closure is provided with a body (24, 324, 524) having an outlet passage (40, 340, 540). A sleeve (80, 380, 580) is mounted on the body for rotation relative to the body. The sleeve has a transverse deck (102, 402, 602) defining a discharge passage (120, 420, 620) for communicating with the body outlet passage as the discharge passage moves in an arc relative to the body. In one embodiment, a seal (419, 437) is provided between the sleeve deck and the body around the outlet passage and discharge passage. In a preferred embodiment, an actuator (160, 460, 660) is mounted on the sleeve for rotation with the sleeve. Engaging structures (51, 52, 204, 208; 351, 352, 504, 508; 551, 552, 704, 708) are defined by the body and the actuator for tilting the actuator between a closed position and an open position while the actuator is rotated with the sleeve. The actuator includes engaging portions (204, 208: 504, 508; 704, 708) for engagement with drive members (51, 52; 351, 352; 551, 552) projecting upwardly from the body through openings (110, 112. 410, 412; 610, 612) in the sleeve.  Engagement between the drive members and actuator is effected on opposite sides of the pivot axis of the actuator so as to effect tilting of the actuator between an open position and a closed position.
Patent CA-2131985-A1 (CA)
Title: Prosthesis with improved biocompatability
Inventor: CHRISTENSEN JAMES M
IPC: A61L27/16
Filed: 1992-03-19
Abstract: 2131985 9300867 PCTABS00019 An injectable or implantable material for soft tissue augmentation comprising a hydrogel containing both hydrophobic and hydrophilic domains is prepared by copolymerizing a hydrophilic monomer, such as water soluble N-vinylpyrrolidone with non-water soluble monomers, such as N-vinyl carbazole, its derivatives, or a non-water soluble derivative of N-vinylpyrrolidone. Also suitable for injection into direct contact with body tissue are hydrogels prepared by cross-linking polyvinylpyrrolidone. The hydrogel may be either solid or composed of particles. The hydrogel may also be enclosed within a flexible porous or nonporous envelope.
Patent CA-2133512-A1 (CA)
Inventor: HARTIG KLAUS W
IPC: C03C17/34
Filed: 1994-10-03
Abstract: A heat-treatable coated glass having, when 2.5-3.5 mm thick, properties comprising 76-78% transmittance, less than 12 ohm/sq.sheet resistance, less than 0.12 normal emissivity and 0.16 hemispherical emissivity after heat treatment has a sputter-coating layer system of: (i) 350-450 Å Si3N4 on the glass surface, (ii) 20 Å min. nickel or nichrome, (iii) 50-120Å silver, (iv) 7 Å min. nickel or nichrome, and (v) 450-550 Å Si3N4. Also claimed is the heat-treated prod. obtd. from the above glass.
Patent CA-2133574-A1 (CA)
Title: Method of Producing Pulp
Inventor: EBELING KARI
IPC: D21C3/20
Filed: 1993-04-01
Abstract: Solvent pulping is practised using ethanol, methanol, formic acid, or the like by passing the organic solvent countercurrent to the cellulosic fibrous material (wood) being adjusted into paper pulp.  The process may be batch or continuous.  The pH of the process is relatively stable and neutral, and can be controlled to maintain the process generally neutral by removing the acids formed at the beginning of the cook, e.g. with spent solvent, and can be made more uniform by adding alkali to the wood just prior to the wood coming into countercurrent contact with the organic solvent. A catalyst, such as an earth-alkali metal salt or an organic base, may also be added to the wood to enhance dissolution of the ligning. The treated pulp is washed, and the solvent in the wash liquid from the washing stage may be separated by distillation. The pulp may be steamed prior to cooking. The lignin containing liquid (spent organic solvent) may also be distilled, with the organic solvent renturned to the cook, the water separated and reused, and the lignin combusted.
Patent CA-2133671-A1 (CA)
Title: Method of producing sintered-or bond-rare earth element-iron-boron magnets
Inventor: TAKAHASHI YASUNORI
IPC: B22F1/10
Filed: 1994-10-05
Abstract: It is an object of the present invention to provide a method of producing sintered- or bond- rare earth element ? iron ? boron magnets obtainable easily and superior in magnetic properties with stable performance.  The method of producing sintered rare earth element ? iron ? boron magnets according to the present invention is characterized by that it comprises steps of mixing in a scheduled ratio an acicular iron powder coated with a coating material, a rare earth element powder coated with a coating material and a boron powder coated with a coating material, and subjecting the mixture to compression molding followed by sintering of the molded mixture in the presence of a magnetic field.  The method of producing bond rare earth element ? iron ? boron magnets according to the present invention is characterized by that it comprises steps of preparing a magnet powder by hydrogen-disintegration of the above-mentioned sintered magnet wherein a hydrogen-occluded sintered magnet resulted from heating the magnet under hydrogen at atmosphere is subjected to hydrogen emission under substantial vacuum to cause disintegration of the hydrogen-occluded sintered magnet, coating the magnet powder with a coating material, mixing the coated magnet powder with a binder, and compression molding the mixture under heating in the presence of a magnetic field.
Patent CA-2136286-A1 (CA)
Inventor: LAING DAVID H
IPC: A61M5/152
Filed: 1994-11-21
Abstract: An infusion device including a rigid accessible housing, a flexible air bag contained within the rigid housing in use, a space next to the flexible air bag for containing a drug bag in use, a line connected between the drug bag and patient in use, a pumping device connected to the air bag, a control unit for controlling the operation of the pump which includes a sensing mechanism in communication with the line or drug bag for sensing the fluid pressure therein without contaminating the medicament in the line to the patient and wherein the pumping device is activated when the pressure in the line or drug bag passes below a predetermined level.
Patent CA-2136376-A1 (CA)
Title: Low pah pitch and process for same
Inventor: RODER WILLIAM R
IPC: C10C3/00
Filed: 1994-11-22
Abstract: Described are preferred pitches which comprise a blend of coal tar pitch, petroleum pitch and gilsonite pitch, and preferred processes and compositions which can be used to form such pitches.  The pitches have substantially reduced contents of polyaromatic hydrocarbons (PAH's) relative to standard coal tar pitches, and are thus more favorable from health, safety and environmental standpoints.
Patent CA-2137305-A1 (CA)
Title: Convertible footwear
Inventor: HANSON VIOLET M
IPC: A43B3/10
Filed: 1994-12-05
Abstract: Footwear having a pair of slipper or footwear/shoe members joined together.  Each member is formed of a flexible upper body and a sole secured thereto about the perimeter.  The two slipper or footwear/shoe members are further joined with their soles abutting each other.
Patent CA-2138086-A1 (CA)
Title: Pneumatic drill hammer
Inventor: WALTER HANS-PHILIPP
IPC: E21B4/14
Filed: 1994-12-14
Abstract: According to the invention, a drill hammer (10) generally comprises an outer tube (55), a control casing jacket (60) inclusive of check valve (59) and a central tube (80) having radial passages (81, 83). A ram (75) is guided on central tube (80),onto the lower and preferably recessed end (84) of which the head of a drill steel (90) may slide. A cylinder liner (70) that may be provided with outer ribs (101) also guides ram (75) and is peripherally welded to outer tube (55) along a welding zone S of axial length ?. Above control casing jacket (60), there is an adapter (40) comprising downstream channels (43) and carrying a blowing collar (50) provided with upwardly directed nozzles (53). A drive-transmitting sleeve (15) below a screw head (11) is joined to the adapter (40) either directly or via a shift unit (30) that guides a shaft (20) whose lower end (23) may form a slide valve relative to an upper adapter portion (41). From there, passages (42, 47) lead to a control casing jacket (62) having channels (63). Below a tubular body (61), there is between outer tube (55) and cylinder liner (70) a jacket chamber (68) of a free cross section at least as large as that of the narrowest among central passages (12, 22, 32, 42/47, 62, 82, 92) in the main components (11, 20, 30, 40, 61, 80, 87/90, respectively). Grooves, channels and bores (71, 72; 81, 83) in cylinder liner (70) and central tube (80) serve, together with recesses (76, 76') and bores (78, 78'), for controlling the movement of the ram (75).
Patent CA-2138318-A1 (CA)
Title: Tie down device and method for using same
Inventor: OKLAND MERLYN C
IPC: B60P7/08
Filed: 1994-12-16
Abstract: A tie down device is provided for a vehicle having a carrier sidewall with forward and rear stake holes formed therein. First and second body members each have an anchor end inserted into one of the stake holes and each have a cylindrical end frictionally fitted within the opposite ends of an elongated tube. The body members at the opposite ends of the tube each include a tie opening extending there through for receiving a tie down line for holding cargo in the vehicle carrier.
Patent CA-2138485-A1 (CA)
Inventor: VON SAYN-WITTGENSTEIN PIETRO F
IPC: G02B5/24
Filed: 1994-12-19
Abstract: La présente invention concerne des lunettes solaires à filtres électro-optiques filtrant les rayons lumineux et qui comporte un capteur photo-sensible adapté à émettre un signal primaire continu de puissance croissante en fonction de l'intensité lumineuse qui l'atteint, un circuit électronique électriquement relié au capteur photo-sensible et émettant un signal secondaire alternatif de puissance croissante avec la puissance du signal émis par le capteur photo-sensible et deux filtres électro-optiques fonctionnant en positif et placés sur des montures de lunetterie et comportant chacun une zone active. La transparence à la perpendiculaire aux filtres électro-optiques est supérieure à cent-dix pourcents de la transparence minimale des filtres électro-optiques lorsque le capteur photosensible perçoit un rayonnement solaire de face.
Patent CA-2139295-A1 (CA)
Title: Isopropyl t-butyl ether (iptbe) generation from grude acetone
Inventor: KNIFTON JOHN F
IPC: C07C29/145
Filed: 1994-12-29
Abstract: Disclosed is a two-step process for the generation of isopropyl t-butyl ether from a crude by-product acetone stream which comprises: a)   Hydrogenating said crude acetone over a bulk metal, nickel-rich catalyst to give an isopropanol-rich effluent; b)   subjecting said isopropanol-rich intermediate to etherification conditions in the presence of a strong acid catalyst selected from:          (1)  a cationic resin;          (2)  a .beta.-zeolite;          (3)  dealuminized y-zeolites; and (4)  metal-modified .beta.-zeolites.