baber/WOPTO huggingface dataset:
Patent CA-2149220-A1 (CA)
Title: Pretreatment method for increasing conversion of reforming catalyst
Inventor: MULASKEY BERNARD F
IPC: B01J29/06
Filed: 1993-11-16
Abstract: A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025 ·F to 1275 ·F in a reducing atmosphere prior to contacting the catalyst with a hydrocarbon feed in the presence of hydrogen.
Patent CA-2150140-A1 (CA)
Title: Vehicle elevator
Inventor: BEAUMONT STEVEN ANTHONY
IPC: E04H6/24
Filed: 1993-11-24
Abstract: A storage system (10), preferably for vehicles comprising a plurality of storage bays (11) each having an opening, at least one moving means (15) movable to be adjacent the opening of any one of the storage bays (11) and transfer means (90, 20) for transferring objects (21) carried by the moving means (15) into the storage bay (11). Preferably the storage bays (11) are arranged in two arrays and the moving means (15) is capable of transferring an object to a storage bay (11) in either array.
Patent CA-2150670-A1 (CA)
Title: Method and apparatus for enzymatic synthesis of oligonucleotides
Inventor: HYMAN EDWARD DAVID
IPC: C12Q1/68
Filed: 1993-12-21
Abstract: Enzymatic synthesis of oligonucleotides may be performed by the steps of: (a) combining a primer and a blocked nucleotide in the presence of a chain attending enzyme whereby a primer-blocked nucleotide product is formed containing the blocked nucleotide coupled to the primer at its 3'-end; (b) removing the blocking group from the 3'-end of the primer-blocked nucleotide product; and (c) repeating the cycle of steps (a) and (b), using the primer-nucleotide product of step (b) as the primer for step (a) in the next cycle, for sufficient cycles to form the oligonucleotide product. Cycles may be performed either with or without inactivation of unreacted blocked nucleotide substrate, i.e., converting any unreacted blocked nucleotide to an unreactive form which is substantially less active as a substrate for the chain extending enzyme. Cycles may be performed with or without removal of the blocking group from unreacted blocked nucleotide. When the blocked nucleotide used in a given cycle is not to be reused in the next cycle, then the given cycle is performed with inactivation of unreacted blocked nucleotide and favorably with removal of tbe blocking group from unreacted blocked nucleotide. When the blocked nucleotide used in a given cycle is to be reused in the next cycle, then the given cycle is performed without removal of the blocking group from unreacted blocked nucleotide and favorably without inactivation of unreacted blocked nucleotide. These cycles are performed perferably in a single vessel witbout intermediate purification of oligonucleotide product. The removal of the blocking group is preferably performed using an enzyme. The inactivation of unreacted blocked nucleotide is preferably performed using an enzyme or enzyme conbination.
Patent CA-2151985-A1 (CA)
Inventor: SISBARRO FREDERICK P
IPC: G01M3/04
Filed: 1995-06-16
Abstract: Condoms and other sheaths are tested for holes by drawing the sheath over a hollow porous mandrel having smaller openings at its head end than in the rest of its body,  providing a difference between the pressure within the mandrel and the pressure outside the condom, and comparing the rate of change of pressure within the mandrel with the rate of change of a reference pressure.   The mandrel is shaped such that powder particles in the inner surface of the condom are moved toward the head of the mandrel where the smaller openings are when a condom is drawn onto it, for substantially preventing the powder from clogging the larger pores below the head region of the mandrel.
Patent CA-2153940-A1 (CA)
Title: Dual ramp cam actuator
Inventor: CHOPINEAU THIERRY
IPC: B66B13/12
Filed: 1995-07-14
Abstract: The invention concerns a device for linking together an elevator car door (42) and a landing door (70).    The device includes : - two vertical rods (12, 14) connected to the ends of two rocker bars, said rockers bars being joined to a support plate integral with the car door (42), -  a  first  ramp  secured  to  a  fixed  portion  of  the elevator car and comprising a horizontal bearing surface, - a cam roller (52) rotatably mounted at the upper end of one (14) of said rods and which, in the closed position of the car door, overlaps said horizontal bearing surface, said two rods then being in their close position, - and a second ramp (84)  secured to the elevator car following the first ramp in the direction of opening the car door and which acts on the cam roller so as to force the two rods to be spaced from each other.
Patent CA-2154689-A1 (CA)
Title: Improved immunotherapeutic composition
Inventor: ALKEMADE STANLEY J
IPC: A61K35/74
Filed: 1994-01-28
Abstract: The present invention relates to an immunotherapeutic agent that is effective in treating a variety of diseases in animals and humans. More particularly, the present invention is a preparation of a modified mycobacterial cell wall extract that does not contain oil, that is capable of stimulating the immune system of an animal or human in such a way as to cause the body to neutralize, abort or eliminate infections, tumors and other disorders.
Patent CA-2157569-A1 (CA)
Inventor: COOK CHARLES DENVER
IPC: B65D75/58
Filed: 1994-02-23
Abstract: The present invention presents improved packages for single-use, disposable folded towels (105, 205, 305), and more particularly to single- and multi-towel packages which provide for readily grasping a defined portion of the towel upon opening the package and automatic unfolding of the towel upon removal from the package without a separate unfolding step requiring additional consumer action. Single-towel embodiments are disclosed which provide for complete unfolding of the towel by use of: (a) an opening (152, 257) bearing a particular geometrical to the dimensions of the folded towel; or (b) a flexible bar (351, 451) within the package to provide unfolding of the towel in the longitudinal direction. A multi-towel embodiment which provides for the advantageous dispensing features and convenience of an improved single-towel package while providing the added capability of multi-towel transportation is also disclosed. These packages provide for complete containment and protection of the folded towel prior to use, while providing ease of dispensing and unfolding for the consumer at the time of use. Several methods of folding folded towels for use with packages according to the present invention are also disclosed, as well as various methods of fabricating the improved packages according to the present invention.
Patent CA-2161411-A1 (CA)
Inventor: DOLAN RICHARD
IPC: C11D3/395
Filed: 1994-05-10
Abstract: A toilet cleaning block that releases a halogen containing sanitizing agent in a controlled, substantially constant rate for about 2 to about 4 months of constant contact with water and is then completely dissolved in the water comprises an admixture of about 50 % to ¦ about 80 % by weight of a halogen containing sanitizing agent, about 20 % to about 40 % by weight of a bulking agent such as aluminum hydroxide and about 1 % to about 20 % by weight of a sacrificial dissolution rate regulating agent such as sodium chloride.
Patent CA-2161461-A1 (CA)
Title: Induction heating apparatus
Inventor: HANAMOTO MIKIO
IPC: H05B6/36
Filed: 1989-12-21
Abstract: An induction heating apparatus comprises a series inductor provided in the way of a power supply bus line connected to an induction heating coil, a magnetic member provided so that said magnetic member can be inserted into and taken out from said inductor, a drive device for driving said magnetic member to be inserted into and taken out from said inductor, and magnetic flux density alleviating means provided in the induction heating coil for alleviating magnetic flux concentrating in an edge portion of a steel plate.
Patent CA-2162106-A1 (CA)
Inventor: JARRY CHRISTIAN
IPC: A61P9/12
Filed: 1995-11-03
Abstract: 5-Aryloxymethyl oxazolines of formula (I), their optical isomers (pure or in the form of a mixt.) and acid or base addition salts are new. R1, R2 = H or 1-6C alkyl; A = phenyl substd. by R3-R5 or R9 or pyridyl substd. by R6-R8; R3 = halo, 1-6C alkyl or alkoxy, amino, mono- or di-1-6C-alkylamino, carboxy, 1-6C -alkyl or alkoxycarbonyl, trifluoromethyl or cyano; R4-R8 = H, halo, 1-6C alkyl or alkoxy, amino, mono- or di- 1-6C alkylamino, carboxy, 1-6C alkoxycarbonyl, trifluoromethyl or cyano; R9 = nitro; provided that A is not di or trihalophenyl, 4-methyl-, 4-methoxy-, 4-chloro-, 4-tert-butyl- or 3-(dimethylamino) phenyl.
Patent CA-2163991-A1 (CA)
Title: Method of purifying fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether
Inventor: KAWAI TOSHIKAZU
IPC: C07C41/42
Filed: 1995-03-23
Abstract: A method of purifying fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether by distilling the crude ether in the presence of a compound selected from among hydroxides, hydrogenphosphates, phosphates, hydrogencarbonates, borates and sulfites of alkali metals, alkali metal acetates and phthalates, and boric acid. According to this method, a highly pure fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether to be used as a medicine, especially as an inhalation anesthetic, can be produced by effectively inhibiting the decomposition of the ether in the distillation step.
Patent CA-2165404-A1 (CA)
Title: Safety guard for orifice fitting device
Inventor: KLAK STEVEN P
IPC: G01F1/42
Filed: 1995-12-15
Abstract: A safety guard or lockout device (22) for a dual chamber orifice fitting device (1) having a removable orifice plate (4). In a normal position when the upper and lower chambers (8, 9) are equal in pressure, the guard (50) of the safety guard device (22) is in a retracted position relative to the square end (36) of a valve gear shaft (18) as shown in Figure 3 to permit connection of a manual tool, such as a wrench, to square end (36) of valve gear shaft (18) for actuation of isolation valve member (16). When changing the orifice plate (4), the pressure in the upper chamber (8) is reduced to atmospheric conditions and provides a fluid pressure differential between chambers (8) and (9). The fluid pressure differential moves fluid responsive member (30) and guard (50) to an extended position covering the square end (36) of valve gear shaft (18) to prevent access of a manual tool to the shaft (18) thereby preventing operation of the isolation valve (16) separating the upper chamber (8) from the lower chamber (9).
Patent CA-2167765-A1 (CA)
Title: Rotary screen printing machine for sheet printing
Inventor: WYSSMANN HANS
IPC: B41F15/40
Filed: 1996-01-22
Abstract: The rotary screen printing machine has a form cylinder (1) which carries a screen printing stencil (3), and an impression cylinder (2) having at least one cylinder pit (4), in which sheet grippers (5) are installed. In their closing position, the sheet grippers (5) do not project above the printing surface of the impression cylinder (2). Arranged inside the form cylinder (1) is an adjustable doctor (6) which can be controlled by an actuating mechanism (7, 8, 9) in such a way that, during a printing operation, the doctor (6) is pressed against the inside of the screen printing stencil (3), but is lifted off from this screen printing stencil when the open region of a cylinder pit (4) of the impression cylinder (2) passes the form cylinder (1).
Patent CA-2169752-A1 (CA)
Title: Gas discharge lamp and powder distribution system therefor
Inventor: SMALLWOOD ROBERT C
IPC: H05B41/24
Filed: 1994-09-02
Abstract: Fluorescent type lamps (24a-24n) are arranged to have frequency power delivered from standard, commercial A.C. sources (10) either directly or from power levels distributed from a master ballast (20). When the master ballast is employed, it functions as an interface between the primary power source and a distribution network to one or more modules so as to relieve the modules of operations such as initial power form conversions, filtering and power factor correcting which requires large components. The module or modules driven by the master ballast output are contained within the lamp envelope or attached as an extension of the lamp envelope. The module is formed of elements mounted as a miniaturized unit configured to fit within the lamp envelope or to attach to the end of the envelope. The module includes oscillator components mounted on an elongated board so as to form an assembly with a cross section compatible with the perimeter of the envelope itself. The module can operate independent of a master ballast unit by including power handling circuitry within the module.
Patent CA-2170348-A1 (CA)
Title: Dehydrogenation using dehydrogenation catalyst and polymer-porous solid composite
Inventor: REZAK MARY E
IPC: C07C5/333
Filed: 1994-06-10
Abstract: A process is provided for catalytic dehydrogenation of light paraffinic hydrocarbons using a dehydrogenation catalyst and a polymer-porous solid composite membrane capable of separating hydrogen from the effluent of the dehydrogenation reaction.
Patent CA-2173079-A1 (CA)
Inventor: PADILLA RAUL JR
IPC: E05B1/00
Filed: 1996-03-29
Abstract: A door handle thumb turn is disclosed.  The thumb turn is snap fit into and pivotable within the interior part of the door handle, and has a breakable pin that is temporarily held by a mating stationary part of the door handle that prohibits pivoting when held in place.  The pin and mating stationary part are spaced from the axis of rotation of the thumb turn and ensure that the maximum area of the thumb turn is exposed for painting.  After painting, the lever arm is cycled up and down to break the pin to allow operational pivoting of the thumb turn.
Patent CA-2173706-A1 (CA)
Title: Biosensor
Inventor: MELLER PAUL
IPC: G01N33/543
Filed: 1996-04-09
Abstract: A biosensor  (10)  for measuring changes in viscosity, density and/or mass  in a  fluid to be examined,  for example  a  blood  coagulation  sensor  or  immunoassay system. According to the invention, the reagents neces-sary for the test are contained in a support (13) which is put onto the measurement surface  (18)  of a piezo-electric element  (8).  As a blood coagulation sensor, the  measurement  surface  (18)  may  according  to  the invention itself have a coagulation activator action or else be coated with coagulation activators.
Patent CA-2174665-A1 (CA)
Title: Method of making calcification-resistant bioprosthetic tissue
Inventor: LEVY ROBERT J
IPC: A61L27/54
Filed: 1994-10-20
Abstract: A method of treating a collagenous biomaterial, such as porcine aortic valve leaflets or bovine pericardium, by exposing the biomaterial to an alcohol to inhibit in vivo calcification. The biomaterial preferably glutaraldehyde-pretreated, is subjected to an aqueous solution of 60 % to 80 % lower aliphatic alcohol such as ethanol for a period of at least 20 minutes, and preferably, 24 to 72 hours. The biomaterial is rinsed, and then stored in either a glutaraldehyde-free environment or an ethanolic solution of glutaraldehyde.
Patent CA-2176164-A1 (CA)
Title: Method for managing rule conflicts in active rule-based systems
Inventor: JAGADISH HOSAGRAHAR VISVESVARA
IPC: G06N5/04
Filed: 1996-05-09
Abstract: Many active computer based systems have sets of rules that execute upon the occurrence of particular events when specified condition predicates are satisfied. The present invention presents a method to control the interaction and execution of multiple rules that are triggered by the same condition. The method of the present invention implements logical meta-rules to resolve ambiguities of relationships between rules among multiple triggered rules and arrive at an ordered set of unambiguous system rules. The meta-rules will determine if a rule will never execute, whether two rules can ever be executed together, and whether a rule system will have a unique execution set for all possible rules that become fireable.
Patent CA-2176770-A1 (CA)
Title: Hand tools for deflating and inflating air bags for stabilizing and protecting loads in freight trailers
Inventor: MCCAULEY CHARLES A
IPC: B60P7/06
Filed: 1996-05-16
Abstract: Valve actuating hand tools  for  inflating and deflating an air bag having a valve with a valve head and movable valve stem is disclosed.  Each hand tool includes a first elongated member having a gripping portion at one end thereof and a valve head engaging member at an opposite end  thereof.   A  second elongated member  is  pivotally coupled to the first elongated member with the second elongated member including a gripping portion at a first end thereof and a valve stem engaging member at an opposite end thereof.  A spring is connected to the first and second elongated members to bias the valve head engaging member toward the valve stem engaging member.  With the hand tool in an operative position, the valve head engaging member engages the valve head with the valve stem engaging member engaging the valve stem to position the valve in an open position.
Patent CA-2178181-A1 (CA)
Title: A connector for connecting pull cords
Inventor: AKINS TERRY L
IPC: F16G11/00
Filed: 1996-06-04
Abstract: A connector for connecting a plurality of pull cords to a knob or tassel.  A wedge cleat releasably engages the pull cords and releasably connects the same to a tassel. A surplus cord core integral with and depending from the cleat receives and retains surplus cord wound thereon.  A tassel plate integral with the core mounts a tasselled manipulating cord.  A decorative and protective cover encloses the wedge cleat, surplus cord core and cord, and tassel plate.
Patent CA-2178328-A1 (CA)
Inventor: BLANKENBURG RAINER
IPC: C05G3/00
Filed: 1994-12-03
Abstract: L'invention concerne la production de polymères pulvérulents à base de N-vinylcaprolactame par polymérisation de (A) 50 à 100 % en poids de N-vinylcaprolactame avec (B) 0 à 50 % en poids d'autres N-vinyl lactames, hétéroaromates de vinyle, esters de vinyle, acrylates ou méthacrylates d'alcoyle C¿1? à C¿10? ou d'un mélange de ceux-ci et avec (C) 0 à 5 % en poids de monomères monoéthyléniquement insaturés contenant des groupes acides. A cet effet (i) on polymérise les monomères A, B et C dans une solution aqueuse homogène qui contient 10 à 95 % en poids, par rapport à l'eau, d'un solvant organique miscible avec de l'eau, ou dans un mélange homogène de 0 à 90 % en poids d'eau et de 100 à 10 % en poids de méthanol en présence d'un initiateur formateur de radicaux, puis on remplace le solvant organique par de l'eau ou (ii) on polymérise les monomères A, B et C dans une émulsion aqueuse en présence d'un initiateur formateur de radicaux et le cas échéant en présence d'un émulsifiant. On soumet les solutions ou dispersions aqueuses de polymères ainsi obtenues à un procédé de séchage usuel afin d'obtenir des polymères pulvérulents.
Patent CA-2179061-A1 (CA)
Title: Polyethylene oxide coated intraocular lens
Inventor: HOFFMAN ALLAN S
IPC: A61L27/34
Filed: 1994-12-14
Abstract: An intraocular lens having improved biocompatibility is coated with polyethylene oxide through covalent bonding, preferably using a plasma-deposited amine layer.  The lens is then sterilized with ethylene oxide and extracted with water.
Patent CA-2179508-A1 (CA)
Title: Method and Instrument for Establishing the Receiving Site of a Coronary Artery Bypass Graft
Inventor: RYGAARD JORGEN A
IPC: A61B17/11
Filed: 1994-04-12
Abstract: In a method for locating an ar-terial construction and performing an arteriotomy distally thereof, especially with a view to establishing a bypass connection between the aorta (52) and a part of the coronary artery (51) dis-tally of a constriction in the artery, the most important steps are: (a) locating the site of the constriction in the artery (51), preferably by using an instrument (9) with a head (3) carrying an ultra-sonic transducer array (not shown), and (b) making an incision in the artery (51) closely distally of the constriction, preferably by using a knife (not shown) placed in said head (3). By proceeding in this manner, it is possible to perform the initial steps of a coronary bypass operation swiftly and accurately on a beating heart.
Patent CA-2180445-A1 (CA)
Title: Chemical switching of taxo-diterpenoids between low solubility active forms and high solubility inactive forms
Inventor: NICOLAOU KYRIAKOS C
IPC: C07D407/12
Filed: 1995-01-10
Abstract: Cyclic chemical switching method is employed for solubilizing and desolubilizing taxo-diterpenoids with respect to aqueous solvents. 2-Halogenated onium salts of aza-arenes (I and II) (see figure I  and II) wherein: R0 is a halogen selected from the group consisting of Cl, Br, F, and I; Z1 and Z2 are each selected from the group consisting of C and N; Z3 is selected from the group consisting of S and O; R1 is selected from the group consisting of C1-C6 alkyl, allyl, arenxyl, propargyl, and fused aryl; R2 and R6 are each selected from the group consisting of H, C1-C6 alkyl, allyl, arenxyl, propargyl, and fused aryl; if Z1 is C, then R3 is selected from the group consisting of H, C1-C6 alkyl, allyl, arenxyl, propargyl, C1-C6 O-alkyl, OH, halogen, and fused aryl; if Z1 is N, then R3 is absent; R4 and R8 are each selected from the group consisting of H, C1-C6 alkyl, allyl, arenxyl, propargyl, C1-C6 O-alkyl, OH, halogen, and fused aryl; if Z2 is C, then R5 is selected from the group consisting of H, C1-C6 alkyl, allyl, arenxyl, propargyl, C1-C6 O-alkyl, OH, halogen, and fused aryl; if Z2 is N, then R5 is absent, and S- is a counter ion;   are employed to derivatize taxo-diterpenoids so as to alter their solubility in aqueous solvents. The onium salt of aza-arene includes a delocalized charge which imparts polarity and aqueous solubility to taxo-diterpenoid derivatives. Solubilization is achieved in a one step derivatization with the onium salt of 2-halogenated aza-arenes. Desolubilization is achieved by contacting onium salts of taxo-diterpenoid-C n,2-O-aza-arenes with serum protein to displace the 2-O-aza-arene and form a soluble protein:taxo-diterpenoid intermediate. This protein:taxo-diterpenoid intermediate then dissociates over time to provide a bioactive taxo-diterpenoid. Preferred taxo-diterpenoids include taxol, C-2 substituted taxol, and Taxotere .TM.. These same onium salts of taxo-diterpenoid-C n, 2-O-aza-arenes are employed as water soluble prodrugs. For example, taxol-2'-methylpyridinium tosylate (MPT) is characterized by an elevated aqueous solubility, rapid activation by serum protein, good stability in most other aqueous solutions, formation of a protein:taxol intermediate and good retention within the circulatory system. The toxicity of the activated form is comparable or greater than underivatized taxol. Furthermore, taxol-2'-MPT can be synthesized by a simple one step reaction between taxol and 2-fluoro-1-MPT. The invention is applicable to taxol and taxol mimetics having hydroxyls that are reactive with onium salts of 2-halogenated-aza-arenes. For example, taxol and Taxotere each have reactive hydroxyls at the 2' and 7 positions. The invention is also applicable to a wide array of 2-halogenated-aza-arenes.
Patent CA-2181464-A1 (CA)
Title: Optimized database management system
Inventor: DEIS DAVID L
IPC: G06F17/30
Filed: 1995-01-17
Abstract: A computerized method for organizing data from multiple databases into a single database for optimal access. The method includes providing multiple databases, each for storing data in the form of records. A record from each database is read, and the several records are stored in a single record within a combined database. The single record has a format such that the several records are each stored in accessible portions of the single record so that they can he retrieved individually or together.