baber/WOPTO huggingface dataset:
Patent CA-2013319-A1 (CA)
Title: Tread stocks containing ionic and covalent crosslinks
Inventor: GRAVES DANIEL F
IPC: B60C11/00
Filed: 1990-03-29
Abstract: Abstract of The Disclosure A tire tread comprising a crosslinked tread rubber containing a specific combination of ionic and covalent crosslinks is provided.  The crosslinked tread rubber may advantageously contain from 20 to 50% of ionic crosslinks and from 80 to 50% of covalent crosslinks.      Tire treads of the invention which contain an appropriate combination of ionic and covalent crosslinks exhibit improved wear, lower rolling resistance, lower hysteresis and increased strength properties as compared to conventional tire treads which contain only covalent crosslinks.
Patent CA-2014193-A1 (CA)
IPC: B01J2/28
Filed: 1990-04-09
Abstract: The present invention relates to a zeolite agglomeration process and product.  Zeolite particles are blended with a filler and preferably a surfactant and then agglomerated in a rotary agglomerator with a zeolite binder to form an agglomerate with about 5-70 parts by wgt. zeolite and, after drying, excellent mechanical strength and flowability with good solubilization/dispersion in aqueous solution.  The zeolite agglomerate is preferably combined into a granular detergent in a second agglomeration step where the zeolite agglomerate is combined with other detergent components and sprayed with a detergent binder, the granular detergent being characterized by uniform density and particle size with minimum segregation and dusting.  Both the zeolite agglomeration and detergent agglomeration steps are characterized by energy efficiency.
Patent CA-2017537-A1 (CA)
Title: Orthodontic coil spring
Inventor: MIURA FUJIO
IPC: A61C7/00
Filed: 1990-05-25
Abstract: Abstract of the Disclosure A continuous-length orthodontic coil spring is made from a shape-memory alloy wire wound into a coil. The coil defines a plurality of open coil sections defining spaces between the turns thereof, and closed coil sections formed between the open coil sections.  The closed coil sections are tightly wound with insubstantial spacing between the turns thereof.  The coil spring is made of a Ni-Ti alloy wire, and is heat treated to impart a predetermined range of spring force within a superelastic zone of deflection.  The continuous-length coil spring is cut through the closed coil sections to form several shorter-length coil springs therefrom.  The closed coil sections on either end of the shorter-length coil springs are thus adapted to engage the orthodontic brackets mounted to a patient's teeth, to accurately impart the force of the spring to the brackets.
Patent CA-2018658-A1 (CA)
Title: Low-power, stand by mode computer
Inventor: COLE JAMES F
IPC: G06F1/32
Filed: 1990-06-11
Abstract: ABSTRACT OF THE DISCLOSURE           A method and apparatus for configuring a computer in a low-power mode are provided.  In the low-power mode, dynamic random access memory is refreshed by a battery powered system in order to maintain the memory contents.          Low-power mode is entered by saving an interrupt mask and by disabling interrrupts, followed by saving the DMA status, finishing DNA operations, and disabling DMA.  After these steps, the I/O state of the machine is saved by saving various I/O registers and ports.  A referesh of the memory is forced before the system refresh operations are discontinued.
Patent CA-2019041-A1 (CA)
Title: Method for producing dust-free sodium dithionite
Inventor: BUSH JOSEPH L
IPC: C01B17/66
Filed: 1990-06-14
Abstract: ABSTRACT OF THE DISCLOSURE       There is disclosed a method for the production of dust-free sodium dithionite from the reaction of a alkaline formate sulfur dioxide and an alkaline metal agent in the presence of a thiosulfate reactive compound by introducing a water-soluble Polymer having a molecular weight less than 60,000 and delaying the start of the alkaline metal agent until the sodium formate and the sulfur dioxide have begun to be introduced into the reactor.
Patent CA-2019109-A1 (CA)
Title: Polyacetal compositions stabilized with microcrystalline or fibrous cellulose and at least one co-stabilizer compound
Inventor: KOSINSKI LEONARD E R
IPC: C08L59/00
Filed: 1990-06-15
Abstract: TITLE POLYACETAL COMPOSITIONS STABILIZED WITH MICROCRYSTALLINE OR FIBROUS CELLULOSE AND     AT LEAST ONE CO-STABILIZER COMPOUND     ABSTRACT OF THE DISCLOSURE Incorporation of 0.05 to 5 weight percent of a microcrystalline or fibrous cellulose having an average particle size of 100 microns or less and 0.05 to 4 weight percent of at least one co-stabilizer compound selected from the group consisting of polyamides and polymers or oligomers containing hydroxy groups into polyacetal molding compositions results in improved thermal stability of such compositions.
Patent CA-2022091-A1 (CA)
Title: N-acylurea and o-acylisourea derivatives of hyaluronic acid
Inventor: PRESTWICH GLENN D
IPC: A61L27/20
Filed: 1990-07-27
Abstract: N-ACYLUREA AND O-ACYLISOUREA DERIVATIVES OF HYALURONIC ACID Abstract of the Disclosure N-Acylureas and O-acylisoureas prepared by the reaction of a carbodiimide or a biscarbodiimide with hyaluronic acid are useful as vitreous replacements, joint cushions or adjuncts in wound healing.
Patent CA-2022946-A1 (CA)
Title: Compound
Inventor: EVANS JOHN M
IPC: A61K31/44
Filed: 1990-08-08
Abstract: B2814/Abs Abstract The (3S,4R)-isomer of a compound of formula (I):       (I) which is a potassium channel activator antihypertensive and bronchodilator, a processes for its preparation and its use as a pharmaceutical.
Patent CA-2023704-A1 (CA)
Inventor: HAMAMURA KICHISABURO
IPC: C07C69/587
Filed: 1990-08-21
Abstract: A terpene compound having the formula (III) is produced by reacting an allylic halide having the formula (I) with a Grignard reagent having the formula (II) in the presence of anhydrous zinc chloride and a copper compound or an organic zinc halide compound having the formula (IV) in the presence of a copper compound, provided that when A-A is C-C, R min  is hydrogen and when A-A is C=C, X is chlorine. <CHEM> r
Patent CA-2024137-A1 (CA)
Title: Aza compounds
Inventor: HEROLD PETER
IPC: C12N9/99
Filed: 1990-08-28
Abstract: Aza compounds Abstract Azabenzimidazole compounds of the formula                        (I), in which one or two of the variables Z1, Z2, Z3 and Z4 are N and the others are C(R), where R is halogen, acyl, carboxyl which, if desired, is esterified or amidated, or 5-tetrazolyl, or R is -Z-R', wherein Z is a bond or is O, S(O)m or NH, R' is hydrogen or an aliphatic hydrocarbon radical which is unsubstituted or substituted by halogen, hydroxyl, unsubstituted or substituted amino or carboxyl which, if desired, is esterified or amidated and which hydrocarbon radical, if desired, is interrupted by O or S(O)m and the index m is in each case 0, 1 or 2, R1 is an aliphatic hydrocarbon radical which is unsubstituted or substituted by halogen or hydroxyl or is a cycloaliphatic or araliphatic hydrocarbon radical and R2 is the group of the formula                        (Ia), in which alk is a divalent aliphatic hydrocarbon radical, R3 is COOH, SO3H, haloalkanesulfonylamino, PO2H2, PO3H2 or 5-tetrazolyl and either the rings A and B independently of one another are unsubstituted or substituted by halogen, an aliphatic hydrocarbon radical which is unsubstituted or substituted by hydroxyl or halogen and which, if desired, is interrupted by O, hydroxyl which, if desired, is etherified by an a ?natic alcohol, or carboxyl which, if desired, is esterified or amidated or the ring A is substituted by 5-tetrazolyl and the ring B is unsubstituted or substituted as indicated immediately hereinbefore, in free form or in form of a salt, can be manufactured in a manner known per se and can be used, for example, as active ingredients in medicaments.
Patent CA-2024878-A1 (CA)
Title: Arrangement for the precise electronic determination of the limits of a time interval relative to reference clock pulse
Inventor: FRUEHAUF WALDEMAR
IPC: G04F10/08
Filed: 1990-09-07
Abstract: ABSTRACT OF THE DISCLOSURE      An arrangement provides for the precise electronic determination of the limits of a time interval relative to a reference clock pulse, the beginning and end of the intervals being determinable or measurable in each instance by an event.  For the determination of the exact limits of the time interval, a comparator is provided, whose current outputs are supplied directly to a current latch actuated in addition by the reference clock pulse, where the letting through or the freezing in the latch of the instantaneous clock state occurs in the current range with the aid of minimal voltage levels.
Patent CA-2025180-A1 (CA)
Title: Nucleic acid probes and methods for detecting pathogenic candida yeasts
Inventor: WEISBURG WILLIAM G
IPC: C12Q1/68
Filed: 1990-09-12
Abstract: ABSTRACT            Nucleic acid probes are described for detecting yeasts capable of causing Candida infection, specifically yeasts of the genera Candida, Torulopsis, and Yarrowia.  The preferred probes are complementary to ribonucleic acid sequences unique to specific Candida species, or groups of such species, and as such can detect the rRNA, rDNA, or polymerase chain reaction amplification products of these genes. Methods for detecting the etiological agent of human Candida fungemia utilizing these probes are also provided.
Patent CA-2027260-A1 (CA)
IPC: F21V17/00
Filed: 1990-10-10
Abstract: ABSTRACT OF THE DISCLOSURE       A beam-forming shade for use in a vehicular headlamp comprising a cylindrical shade body disposed horizontally in surrounding relation to a bulb of the vehicular headlamp so as to interrupt some parts of light emitted from a light source and a connecting member extending downwardly from the shade body and having a single mounting hole to be attached to a reflector by a single screw.  The shade of the present invention is obtained by bending a single thin metal plate which is previously cut to form a predetermined contour, which plate having a continuous developed form of the cylindrical shade body and the connecting member, thereby obtaining an integral shade.
Patent CA-2030527-A1 (CA)
Inventor: CHATOUREL DANIEL
IPC: B31B19/86
Filed: 1990-04-12
Abstract: Process and device for applying a carrying and/or pouring handle to a pouch of flexible synthetic material and pouch thus obtained. The handle (14) is attached to the foil by welding and cutting before said foil is shaped. Application: liquid containers.
Patent CA-2032695-A1 (CA)
Title: Condensed heterocyclic compounds, their production and use
Inventor: AKIMOTO HIROSHI
IPC: C07D487/04
Filed: 1990-12-19
Abstract: Abstract of the disclosure:       The compounds of the formula,   z-?- CONHCHCOOR1 wherein the ring A is a pyrrole ring which may be hydrogenated; - B - is a divalent cyclic or chain group which may be substituted; one of Q1 and Q2 is N, with the other being N or CH; W is a halogen or hydrogen atom or a group bonded to the bonding line with a carbon, nitrogen, oxygen or sulfur atom, provided that W is not -NH2; X is an amino, hydroxyl or mercapto group; Y is a hydrogen atom or a hydroxyl or amino group; Z is a straight-chain divalent group having a number of atoms of 2 to 5 composed of carbon atoms which each may be substituted, or carbon atoms which each may be substituted and one hetero atom which may be substituted; -COOR1 and -COOR2 each is the same as or different from the other and represents a carboxyl group which may be esterified, or salts thereof are provided.      The compounds are produced by reacting compounds of the formula,   COOR3 wherein A, - B -, W, W, X, Y, Q1  and Q2  are the same as defined above, with compounds of the formula,   wherein -COOR1 and -COOR2 are the same as defined above, and useful as anti-tumor agents.
Patent CA-2032816-A1 (CA)
Title: Amine polymers as coagulator accelerators in blood phase separation
Inventor: CORIN ALAN F
IPC: B01D21/01
Filed: 1990-12-20
Abstract: AMINE POLYMERS AS COAGULATOR ACCELERATORS         IN BLOOD PHASE SEPARATION Abstract of the Disclosure Apparatus and a method are described, wherein a coagulator accelerator is added to a container to achieve agglutination of blood cells when centrifuging whole blood, allowing the serum to be more easily poured off.  The accelerator is selected from polymeric amines that are either polymerized amino acids or vinyl addition polymer amines, with a specified molecular weight range, the vinyl addition amines being selected to avoid lysing the blood cells.
Patent CA-2033191-A1 (CA)
Inventor: IGUCHI KAZUO
IPC: H04M3/24
Filed: 1990-05-30
Abstract: An inter-network connecting system comprising a main network having an exchange function and a subnetwork having no exchange function, to improve the expandability, economy, and efficiency of the subnetwork. When an extension line communication which is a communication in the subnetwork is to be carried out, a call setting processing processor in the main network gives a calling terminal a first special signal so as to operate lookback means in a connection control unit in the subnetwork to set a physical communication paths (Ps) for an extension line between terminals in the subnetwork; and when an outer line communication which is a communication between the main network and a terminal in the subnetwork is to be carried out, the call setting processing processor gives a calling terminal a second signal so as to stop the operation of the loopback means in the connection control unit to set a physical communication path (PM) for an outer line between the exchange and the terminal in the subnetwork.
Patent CA-2037052-A1 (CA)
Title: A method and system for inserting spinal catheters
Inventor: ANDREW DANIEL E
IPC: A61M25/01
Filed: 1990-05-24
Abstract: 2037052 9014124 PCTABS00002 A method and a system for inserting spinal catheters for administration of spinal anaesthesia are disclosed. An epidural needle (10) having a hub (22) is inserted into the epidural space of a patient and a cannula (18) having a blunt end (52) is inserted into and advanced forwardly within the epidural needle for abutment against the dura-arachnoid membrane (53) to place the membrane in tension. The cannula is locked in place in the epidural needle by a securing means (32) attached to the hub of the epidural needle.  A flexible catheter (54) having a wire (58) or stylet therein with an end projecting beyond the distal end of the catheter is inserted through the cannula for piercing a hole in the tensioned dura-arachnoid membrane whereby the catheter can be inserted a predetermined distance through the dura-arachnoid membrane into the subarachnoid space. The cannula and epidural needle are removed and the wire withdrawn to allow continuous administering of an anaesthetic through the catheter. A hole can be formed in the dura-arachnoid membrane by a sharp stylet prior to insertion of the catheter.
Patent CA-2039921-A1 (CA)
Title: Transfer and expression of gene sequences into central nervous system cells using herpes simplex virus mutants with deletions in genes for viral replication
Inventor: BREAKEFIELD XANDRA O
IPC: A61P25/28
Filed: 1991-04-05
Abstract: ABSTRACT This invention relates to methods of gene delivery to cells  in  the  central  nervous  system  by  introducing  and expressing gene sequences mediated by herpes simplex virus 1 (HSV-1) vectors with a mutation in a gene for viral replica-tion.     A108-08.WP                                    041690
Patent CA-2042626-A1 (CA)
Inventor: VANOMMEREN CATHARINE
IPC: C06B47/14
Filed: 1991-05-15
Abstract: The invention is directed to a blended explosive composition containing an emulsifier which is a derivative of polyisobutylene succinic anhydride and a prill having an internal additive of a naphthalene sulfonate surfactant and an external coating which makes the prill compatible with the emulsifier.
Patent CA-2044297-A1 (CA)
Title: Attitude control actuator, particularly for spacecrafts
Inventor: STELLA DOMENICO
IPC: B64G1/28
Filed: 1991-06-11
Abstract: ATTITUDE CONTROL ACTUATOR, PARTICULARLY FOR SPACECRAFTS                       ABSTRACT An attitude control actuator, particularly for spacecrafts, includes a frame (3), two flywheels (7,9) driven by respective motors with opposite and equal spins, and supported by gimbals journaled on the frame about respective parallel axes at right angles to the axes of the flywheels, and motors for rotating the gimbals through desired angular displacements about their journal axes. The frame is pivoted to a support member (5) rigidly associated to the spacecraft and is capable of a rotation of 90°in order to control the attitude of the spacecraft, with respect to any desired direction, with just one dual flywheel frame.              (Ref. Fig.1)
Patent CA-2045688-A1 (CA)
Title: Parking space barrier
Inventor: STOLLER DAVID
IPC: E01F13/06
Filed: 1990-11-16
Abstract: A parking barrier that is remotely controlled and includes a vertically, pivotally mounted post (17) having an L-shaped arm (15) secured at one end thereof to the post (17) and projecting outwardly therefrom, lying in a generally horizontal plane. The post is positioned at or near one of the boundary lines of a defined parking space and the post may be moved through an arc from one position to another wherein the L-shaped arm (15), in one position, projects into the parking space preventing unauthorized parties from using that space for parking a vehicle. In the other position, the L-shaped arm overlies two adjoining boundary lines or in proximity thereto, allowing a vehicle to park in the designated space.
Patent CA-2048041-A1 (CA)
Inventor: VAN DER SCHRIECK GERARD L M
IPC: E02F5/28
Filed: 1991-07-29
Abstract: To remove a surface layer (54) from an underwater bed (50), without disturbance of the environment, the device (1) to carry out this process is characterised in that it comprises flexible edge means (5) along virtually completely the whole length of its outer (34) for bottom edge (3) for interacting in a sealing manner with the underwater bed (50). In this way, the process of removing the surface layer (54) is carried out within a safely confined area (52). Said edge means (5) can comprise a suspended, relatively thin loose fitting flexible web-like means, the lower edge of which is preferably weightened. To decrease or eliminate the occurence of eddies in the water during raising and lowering of the device (1), closable holes (14) can be provided in the screen (2). These holes (14) can be shut off by panels (15) which can be moved virtually parallel to the screen (2). Removing of surface layer (52) can be carried out using e.g. water jets, cutter means, screw type means, brushes etc. <IMAGE>
Patent CA-2048534-A1 (CA)
Inventor: MORENO JOSEFINA
IPC: G03G15/00
Filed: 1991-08-07
Abstract: A high speed electronic printing system in which the number of paper trays for supplying print media is substantially less than the number of different print media selections that can be programmed for each print job, with a system for identifying missing print media while printing together with an available paper tray into which the print media can be loaded to allow uninterrupted processing of print jobs.
Patent CA-2049857-A1 (CA)
Title: Flame retardant brominated styrene-based latices
Inventor: WANG JIN-LIANG
IPC: C08F20/18
Filed: 1991-08-26
Abstract: ABSTRACT OF THE DISCLOSURE     Improved flame retardant polymer latices are disclosed which comprise copolymers of ring-halogenated aromatic monomer units and alkyl acrylate/methacrylate monomer units, and which may additionally include at least one other monomer.  In a first embodiment, the latices include ring-brominated aromatic monomer units and alkyl acrylate and/or alkyl methacrylate monomer units.  In a second embodiment, the latices include these first two types of monomer units and further include third monomer units from unsaturated esters of saturated carboxylic acids, halogen-free aromatic monomers or unsaturated carboxylic acid monomers.  In a third embodiment, the latices include four monomer units, namely ring-brominated aromatic monomer units, alkyl acrylate/methacrylate monomer units, halogen-free aromatic monomer units and unsaturated carboxylic acid monomer units.  In one aspect, the halogenated aromatic monomers are present in an amount to provide from 7 to 20 weight percent bromine in the final latex composition.  In another aspect, the halogenated aromatic monomers include polybrominated monomers, particularly to provide monomers having an average of at least about 1.5 bromines per monomer unit.
Patent CA-2057204-A1 (CA)
Title: Method of forming carpeting
Inventor: HALLWORTH GERALD
IPC: B32B7/12
Filed: 1991-12-06
Abstract: ABSTRACT                   METHOD OF FORMING CARPETING A method of forming a carpet comprising applying an adhesive to a backing material (1) via a perforated roller (3). As the roller (3) is passed over the backing material (1) adhesive is displaced out through the perforations in the roller (3) onto the backing material (1). Once the adhesive has been applied to the backing material (1) the backing material (1) is secured to the back surface of a pre-coated textile substrate layer.
Patent CA-2059389-A1 (CA)
Inventor: YAMAMOTO YOHZOH
IPC: C08L33/06
Filed: 1992-01-15
Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 90:60   wherein m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R1-R18 are each independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R15-R18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R a and R b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.
Patent CA-2064535-A1 (CA)
Title: Self-unloading ship and method of unloading a self-unloading ship
Inventor: FREDERICK ROBERT W
IPC: B63B27/00
Filed: 1992-03-31
Abstract: SELF-UNLOADING SHIP AND METHOD OF UNLOADING A SELF-UNLOADING SHIP     ABSTRACT OF THE DISCLOSURE     A self-unloading ship and a method of unloading a self-unloading ship. The hopper gates in the hold or holds of the ship are configured such that bulk-flow gates, or gates conducive to the flow of loose, low density bulk material therethrough, are positioned alternately with respect to roller-track gates, or gates conducive to the flow of loose, high-density material there-through.  A method for unloading the ship is provided for wherein the ship is unloaded first by utilizing one type of gate and thence by utilizing the other type of gate.
Patent CA-2065856-A1 (CA)
Inventor: HENDRY JAMES WATSON
IPC: B29C45/57
Filed: 1990-09-18
Abstract: A method of gas-assisted injection molding in which a quantity of resin is injected in a resin flow path defined by a sprue (24) and runner (26) and a pressurized gas is injected into the mold, but not into the article-defining cavity.