baber/WOPTO huggingface dataset:
Patent CA-2084534-A1 (CA)
Title: Polystyrene modified with silicone rubber powder
Inventor: LILES DONALD T
IPC: C08L73/00
Filed: 1992-12-04
Abstract: POLYSTYRENE MODIFIED WITH SILICONE RUBBER POWDER            ABSTRACT            A crumb-like silicone rubber powder is uniformly dispersed in a polystyrene polymer using conventional equipment, such as a twin screw extruder, to provide a resin having up to a ten fold improvement in impact strength over the unmodified polymer.  The novel silicone rubber powder of the invention is prepared by isolating the particles obtained from a polymerization of an unsaturated monomer in the presence of an aqueous emulsion of a hydroxyl-functional polydiorganosiloxane which has been precured using an organotin curing catalyst and a crosslinker which contains unsaturated functionality.
Patent CA-2085014-A1 (CA)
Title: Process for separating acid from nitro substituted aromatics using a molten nitrate salt
Inventor: QUAKENBUSH ALLEN B
IPC: C07C/
Filed: 1991-07-10
Abstract: Described herein is a process for separating an acid impurity from a solution containing acid and a nitro substituted aromatic compound by contacting the solution with at least one molten nitrate salt.
Patent CA-2087520-A1 (CA)
Title: System and method for calculating channel gain and noise variance of a communication channel
Inventor: BORTH DAVID EDWARD
IPC: H04B7/00
Filed: 1992-05-07
Abstract: A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals
Patent CA-2088195-A1 (CA)
Title: Cholecystokinin antagonists, their preparation and therapeutic use
Inventor: HORWELL DAVID C
IPC: C07K5/08
Filed: 1991-08-29
Abstract: Novel cholecystokinin antagonists useful as agents in the treatment of obesity, hypersecretion of gastric acid in the gut, gastrin-dependent tumors, or as antipsychotics are disclosed. Further, the compounds are antianxiety agents and antiulcer agents. They are agents useful for preventing the response to the withdrawal from chronic treatment with use of nicotine, diazepam, alcohol, cocaine, coffee, or opioids. The compounds of the invention are also useful in treating and/or preventing panic. Also disclosed are pharmaceutical compositions and methods of treatment using the antagonists as well as processes for preparing them and novel intermediates useful in their preparation. An additional feature of the invention is the use of the subject compounds in diagnostic compositions.
Patent CA-2090845-A1 (CA)
Title: Self-contained closure mechanism for a core barrel inner tube assembly
Inventor: ZASTRESEK JIRI
IPC: E21B21/10
Filed: 1993-03-02
Abstract: ABSTRACT                A closure mechanism for preventing fluid access to an inner tube of a core barrel assembly is disclosed in which the closure mechanism is configured to move from an open, or unoccluded, condition to an occluded condition in response to increased fluid flow rates and pressure differentials occurring at the closure mechanism. The closure mechanism is also configured to maintain occlusion of the inner tube under substantially all types of drilling conditions, and particularly those where conventional closure mechanisms may fail, such as in horizontal drilling.  The closure mechanism generally includes a conduit structure associated with the inner tube, and having a seat, an occlusion means, such as a ball, and releasing structure which maintains the occlusion means in spaced relationship to the seat until increasing pressure differentials result in release of the occlusion means to register with the seat.            N:\16?4\1991.PAT
Patent CA-2090895-A1 (CA)
Title: Cryptographic method for communication and electronic signatures
Inventor: ORTON GLENN A
IPC: H04L9/30
Filed: 1993-03-03
Abstract: ABSTRACT   A cryptographic method for communication and electronic signatures is described. The system includes at least one encoding device coupled to at least one decoding device by a communications channel. The method is a form of public-key or two-key cryptosystem, where the private decoding key is not feasibly determinable from the associated public encoding key.  A block of ns bits of a message-to-be-transferred M (or key-to-be-distributed)is enciphered to ciphertext by first mapping M to a set [X1,X2, ...,Xn], where Xi ? ¦0, 2?). Then the ciphertext [ Y1, Y2, ..., Ym] is determined by   mod q; for j = 1 to m', and  . for j = m' + 1 to m, where   . The encoding key (associated with the intended receiver) consists of integers aij gj and positive fractions f? for i = 1 to n and for j = 1 to m, and positive integers q? for j = 1 to m'. The ciphertext is deciphered (with a secret key known only to the intended reciver) by solving a knapsack   with secret superincreasing weight [b1, b2, ..., b?] and target value b ?¦.omega.-1¦.omega.1-1y¦Q¦P. where y ? [ Y1, Y2, ..., Ym] mod [q1, q2, ..., qm],  and w, w', and [qm'+1, qm'+2, ... qm] are secret integers. The resulting terms {X'1, X'2, .... X'n} correspond to the original message terms [X1, X2, ..., Xn].
Patent CA-2091653-A1 (CA)
Title: Driver circuit for a laser
Inventor: KAISER NORBERT
IPC: H01S5/042
Filed: 1993-03-15
Abstract: Prior  art  driver  circuits  are  implemented  with  a differential   amplifier   which   is   adapted   to   the characteristics of the respective laser and optimized for maximum emitter-current density of the transistors.   At small currents, these circuits exhibit a degraded pulse response.  The object was to provide a driver circuit whose pulse response is essentialy independent of the modulating-current range.   To attain this object,  a differential amplifier  has  at  least  one  additional  differential amplifier connected in parallel therewith.   The current source  associated  with  the  respective  differential amplifier is switched on digitally or continuously via a control   circuit,   depending   on   modulating-current requirements.  Each of the parallel-connected differential amplifiers delivers a fraction of the modulating current. By distributing the modulating current to two or more differential  amplifiers,  a better pulse  response  in a greater current range than in the prior art is achieved. The driver circuit is universally applicable to lasers with differents characterics in optical communication systems.
Patent CA-2092525-A1 (CA)
Title: Filtration of tobacco smoke
Inventor: MARSHALL ROBERT A
IPC: B01J20/28
Filed: 1991-08-20
Abstract: Hydrophobic particles containing polar groups on their surfaces are incorporated into a tobacco smoking article to remove deleterious chemical compounds, both polar and non-polar, from the tobacco smoke.
Patent CA-2094492-A1 (CA)
Title: Enclosing a substrate with a heat-recoverable article
Inventor: RINDE JAMES A
IPC: C09J7/10
Filed: 1991-11-06
Abstract: A substrate (12, 14) is enclosed with a heat recoverable backing with a layer of a thermosetting adhesive composition (20) comprising an amorphous thermoplastic resin and a thermosetting resin positioned between the heat recoverable article (10, 26) and the substrate (12, 14). The adhesive composition can be in the form of a self-supporting sheet or tape or it can be on a surface of the heat recoverable article (10). When particulate conductive filler is added to the adhesive, a conductive polymer composition can be made. Such conductive compositions are suitable for use for static dissipation in an article of the invention, or in an electrical device, e.g. a heater or a circuit protection device.
Patent CA-2098956-A1 (CA)
Inventor: ARTER THOMAS C
IPC: G01N33/52
Filed: 1993-06-22
Abstract: A dry analytical element for the determination of an analyte is disclosed wherein the spreading layer of the element contains a reagent that eliminates reducing interferents present in the analyte sample.
Patent CA-2100617-A1 (CA)
Title: Liquid thromboplastin reagent
Inventor: BUTLER JAMES R
IPC: C07K14/745
Filed: 1993-07-15
Abstract: The invention is a stable liquid thromboplastin reagent used for measuring the performance of the coagulation system, with a shelf life of greater than 16 months, and a method of producing this reagent.
Patent CA-2103482-A1 (CA)
Inventor: RIEKE TODD M
IPC: B65D39/08
Filed: 1993-11-19
Abstract: A flange fitting for attaching to the lid of a drum includes a seal tube having a generally cylindrical main body with a relatively thin wall and an outwardly radiating frustoconical lip extension.  Also included as part of the flange fitting is a standard drum plug flange having a generally cylindrical main body and an outwardly radiating, frustoconical lip.  The drum plug flange is sized and shaped so as to fit within the seal tube such that the lip extension and the lip are generally coextensive with each other.  These two components are then able to be anchored into the lid of the drum through a punch press operation which simultaneously clamps and crimps both the lip and lip extension into a raised boss recess thereby precluding any preassembly, such as by welding, of the seal tube and drum flange prior to assembly to the drum lid.
Patent CA-2107754-A1 (CA)
Inventor: BALES BRUCE MERRILL
IPC: H04W76/00
Filed: 1993-10-05
Abstract: Allowing a shared line appearance feature to be implemented on a plurality of telephone station sets which are connected to different telecommunication switching systems. The telecommunication switching systems can be interconnected to each other via the public telephone network utilizing standard telecommunication links. A software application program provides a termination point for a directory number that is associated with a shared line appearance. The software application program receives all incoming calls directed to the directory number and determines the operations that should be performed with respect to the telephone station sets terminating the shared line appearance. The software application program directs the incoming calls to the telephone stations sets regardless to which telecommunication system each of the telephone station sets is interconnected. An outgoing call from one of the telephone station sets is switched to the software application program which then switches the outgoing call to thedestination telephone terminal as if the outgoing call had originated at the location of the software application program. With respect to the outgoing call, the software application program also transmits messages to the other telephone station sets terminating the shared line appearance, so that those telephone station sets canindicate that the shared line appearance is busy.
Patent CA-2109598-A1 (CA)
Title: Therapeutic and diagnostic methods based on neurotrophin-4- expression
Inventor: HALLBOOK FINN
IPC: C07K19/00
Filed: 1992-05-20
Abstract: The present invention relates to neurotrophin-4 (NT-4), a newly characterized member of the BDNF/NGF/NT-3 gene family. The present invention also provides for nucleic acid molecules encoding NT-4.
Patent CA-2110621-A1 (CA)
Title: Bicycle trailer hitch assembly and bicycle trailer incorporating same
Inventor: ADAMS DELBERT JOHN
IPC: B62K27/12
Filed: 1993-12-03
Abstract: A bicycle trailer comprises a frame having at its one end a hitch assembly for connecting the bicycle trailer to a towing bicycle and at its other end a ground-engagable wheel. The hitch assembly comprises a clamp part for clamping non-rotatably to a part of the towing bicycle, for example the seat post, of the towing bicycle, a universal joint portion fixedly attached to the trailer frame and a releasable fastening attaching the clamp part to the universal joint portion. The universal joint portion permits pivoting of the trailer, in use, about generally vertical and horizontal axes which are spaced apart, preferably with the second pivot axis between the first pivot axis and the trailer frame. The clamp part may comprise a generally U-shaped member having a cylindrical bight portion and a bolt member extending through aligned holes in end portions of the U-shaped member to urge them together and clamp the seat supporting part. The holes may provide clearance for the bolt member as the end portions rotate relative to the bolt member during tightening of the bolt member. The end portions may take the form of cylinders with a cylindrical insert in each of the cylinders. The bolt member then extends through both inserts. The hole in one of the cylinders is oversized to provide clearance for the bolt member during rotation of the insert about its axis as the bolt member is tightened. The releasable fastening may comprise a non-rotatable spigot-and socket connection between the clamp member and the universal coupling portion, and retaining means for retaining the spigot in the socket.
Patent CA-2110718-A1 (CA)
Inventor: BORDES SYLVAIN
IPC: A61C8/00
Filed: 1993-04-06
Abstract: ABR?GE L'implant présente intérieurement des moyens aptes à assurer le montage avec capacité de déplacement amorti d'un élément support conformé notamment pour recevoir la dent. Les moyens sont constitués par un coussin amortisseur logé dans un chambrage du corps et recevant en superposition une pastille avec une surface d'appui coopérant avec une forme complémentaire d'une vis de fixation de l'élément support.
Patent CA-2111542-A1 (CA)
Title: Poly (arylene sulfide) resin composition
Inventor: SATAKE YOSHIKATSU
IPC: C08K5/098
Filed: 1993-12-15
Abstract: ABSTRACT    A poly(arylene sulfide) resin composition comprising in admixture a poly(arylene sulfide) resin and at least one nickel compound selected from the group consisting of (a) nickel carbonates, (b) nickel hydroxide, (c) organic carboxylates of nickel and (d) nickel oxide is provided.          According to the resin composition of the invention, the metal corrosiveness of the poly(arylene sulfide) resin upon and after its molding or forming is sufficiently inhibited without deteriorating the excellent heat resistance, mechanical properties, processability and the like inherent in the resin.
Patent CA-2112884-A1 (CA)
Inventor: PHILLIPS STEVEN L
IPC: H03K5/08
Filed: 1994-01-05
Abstract: An apparatus (10) for controlling the pressure of a respiratory gas delivered to a patient includes a phase detection circuit (24) for determining the inhalation and exhalation phases of the patient's respiratory cycle. More particularly,  a flow signal representative of the respiratory flow is compared to second signal, offset in time and scaled in magnitude relative to the flow signal, in order to determine the transition from one phase to the next.
Patent CA-2113251-A1 (CA)
Title: Drying systems for apparatus for gelatin coating tablets
Inventor: BERTA NORBERT I
IPC: A23G3/20
Filed: 1994-01-11
Abstract: The present invention is directed to an apparatus for coating a product such as a medicament in the shape of a tablet. The apparatus includes a plurality of plates for receiving and retaining the products and means for advancing the plates on a conveyor to various processing stations. At a dipping station, a dipping means lowers and raises at least one plate into a first coating tank for coating at least a portion of the product. At a rotating station, a rotation means rotates one of the plates containing the product for spreading the coating on the product. After rotation, a first elevator transfers the plates from the conveyor to a dryer disposed above the conveyor. A second elevator transfers the plates from the dryer back to the conveyor for further processing.      The dryer includes complementary acting pusher bars for transporting a plurality of plates horizontally along a plurality of vertically spaced guides. The plates are transported upward to traverse the guides through a first section of the dryer and downward through a second section of the dryer by the combined action of the first and second elevators and a mid-elevator. Several embodiments for the elevator are disclosed which include a lift bar mechanism, a continuous chain mechanism and a lift rod system.
Patent CA-2117242-A1 (CA)
Title: Shrink tunnel
Inventor: HAVENS MARVIN R
IPC: B65B53/06
Filed: 1994-03-08
Abstract: ABSTRACT OF THE DISCLOSURE       SHRINK TUNNEL An apparatus for heat shrinking of a heat-shrinkable thermoplastic film that is used to package a product by passing the product packaged in the film through a rotatable shrink tunnel with a heated transfer medium passing through the tunnel to cause the shrinkage of the wrap material.
Patent CA-2118942-A1 (CA)
Title: Metal processing or recovery
Inventor: LEWIS KEITH CLIVE
IPC: C22B21/00
Filed: 1992-09-02
Abstract: Continuous melting of lightweight shredded metal, e.g. in the recycling of aluminium can scrap, uses apparatus as shown in the figure 1, the scrap portions being fed into the top of a melting chamber (12) to be acted on by an upward flow of gases at controlled velocity, preferably recirculated from the top to the bottom by a fan (18), and heated to a temperature in excess of the metal melting point; the portions being borne in the flow within the chamber until they melt into denser droplets or globules which drop from the chamber to collect in a holding furnace (26).
Patent CA-2124592-A1 (CA)
Title: Fermentation of cellulose and hemicellulose in corn fiber and distillers dried grains with solubles to ethanol
Inventor: GROHMANN KAREL
IPC: C12P7/10
Filed: 1993-09-24
Abstract: FERMENTATION OF CELLULOSE AND HEMICELLULOSE IN CORN FIBER AND DISTILLERS DRIED GRAINS WITH SOLUBLES TO ETHANOL            ABSTRACT         A method of converting carbohydrates in corn fiber and distillers dried grain and solubles to increase the yield of ethanol,  comprising pretreating a feedstock of corn fiber or distillers dried grain and solubles with dilute sulfuric acid or other means to convert hemicellulose into soluble arabinose, xylose, and other sugars under conditions that preserve protein content; treating the pretreated material with cellulase and possible hemicellulase enzymes to convert cellulose and possibly hemicellulose portions into fermentable sugars; and treating the enzyme treated materials with fermenting microbes to ferment the sugars produced through pretreatment and enzymatic action to alcohol.
Patent CA-2125385-A1 (CA)
Title: Improved dry neutralization of olefinically reactive organic liquid
Inventor: RITTER WOLFGANG
IPC: C07C67/48
Filed: 1992-12-02
Abstract: Abstract of the Disclosure Disclosed is a process for the isolation of pure, substantially neutral, low-volatile organic compounds comprising reactive double bonds from a feedstock which contains said compounds in combination with minor amounts of acidic reaction components and/or corresponding auxiliary materials in a liquid phase, said process comprising the steps of neutralization, removal of the resulting salts and recovery of pure products which even without distillation exhibit low residual acid values in combination with low color values, by using finely powdered oxides, carbonates and/or hydroxides of the alkali metals and/or alkaline earth metals (neutralizing agents) and the subsequent separation of the organic li-quid phase from the resulting solid phase. A process according to the invention is characterized in that the step of neutraliza-tion is effected as follows: -      Addition of the solid neutralizing agent to the hot feedstock, said neutralizing agent being used in an at least stoichiometric amount, relative to the acid value of the feedstock; -      addition, at the same time or thereafter, of a limited amount of water to the reac-tion mixture; -      neutralization by mixing for a period of at least some minutes; -      distilling off the water from the hot reaction mixture under reduced pressure, and -      removal from the liquid product of the solid phase now present. In a particular embodiment the teaching according to the invention relates to the use of said process for an exchange of inhibitors in a mixture reactive when initiated by free radicals, wherein a preparation inhibitor capable of undergoing a salt formation with bases is exchanged for application inhibitors that are subject to free choice with respect to kind and amounts thereof.
Patent CA-2129371-A1 (CA)
Title: Transparent-sleeve screw holding and driving tool
Inventor: JORE MATTHEW B
IPC: B25B23/00
Filed: 1994-08-03
Abstract: ABSTRACT OF DISCLOSURE      A screw holding and driving device for use with powered drills including a slidable transparent sleeve mounted in concentric relation with a screw drive shaft of the device.  The sleeve is provided with an internal surface that is fluted with the fluted surfaces extending parallel to the longitudinal axis of the cylindrically shaped sleeve.  The inner surfaces with larger radii remain clear of the shaft and thus will not be scratched as the shaft moves relative to the sleeve.  Further, a split ring of oval construction is provided for holding the sleeve on the shaft.  The ends of the split oval retaining ring are sized to fit in a groove on the shaft and thus do not extend outside the groove to scratch the transparent sleeve.
Patent CA-2131791-A1 (CA)
Title: Process for producing thin films of inorganic oxides of controlled stoichiometry
Inventor: FACE DEAN W
IPC: C01G15/00
Filed: 1993-03-10
Abstract: An in-situ process for preparing thin films which contain volatile and relatively involatile oxides is disclosed, in particular, crystalline thin films of oxides of superconductors or precursors,wherein separate sources of the volatile and relatively involatile oxides during deposition of the thin film are employed.
Patent CA-2132063-A1 (CA)
Title: Method and circuit arrangement for transmitting message cells via redundant, virtual path pairs of an atm communication network
Inventor: FOGLAR ANDREAS
IPC: H04L69/40
Filed: 1994-09-14
Abstract: ABSTRACT OF THE DISCLOSURE   A method and circuit arrangement for transmitting message cells via redundant virtual path pairs of an ATM communication network is provided. Two alternative solutions are employed for the transmission of message cells via virtual path pairs respectively formed of an active path and of an alternate path. A first solution is that the message cells transmitted via the active path and via the alternate path of a path pair are conducted up to the output of the switching network lying at the end of the corresponding path pair. Dependent on the number of message cells arriving via the active path and via the alternate path, a forwarding of the message cells of the active path or of the alternate path occurs proceeding from this point. The second solution is that the message cells of the alternate path are first discarded at the input of the corresponding switching network. Given an interruption of the active path, which is indicated to the switching network by an interrupt signal, by contrast the message cells arriving via the alternate path are forwarded by the switching network.
Patent CA-2136491-A1 (CA)
Title: Aqueous Dispersions of Organopolysiloxanes
Inventor: OBERNEDER STEFAN
IPC: C08K5/357
Filed: 1994-11-23
Abstract: Aqueous dispersions of organopolysiloxanes containing no organic transition metal compounds or organic compounds of metals from main groups III, IV and V, obtainable using the starting material     (A) an organopolysiloxane containing condensable groups, (B) an organopolysiloxane resin having a maximum molecular weight of 20,000 and (C) a compound containing basic nitrogen. g