baber/WOPTO huggingface dataset:
Patent CA-2306981-A1 (CA)
Title: Intrinsically bacteriostatic membranes and systems for water purification
Inventor: STRIEZ CAROLYN
IPC: B01D67/00
Filed: 2000-04-27
Abstract: The invention disclosed relates to intrinsically bacteriostatic synthetic polymer membranes, and to process for the manufacture thereof. In one embodiment, bacteriostatic metal ions are attached to a surface of a preformed synthetic polymer membrane by static adsorption/absorption and reduced to the metal in situ. In another embodiment, the instrinsically bacteriostatic membranes are formed by providing a casting solution of a membrane forming synthetic polymer and bacteriostatic metal ions, and casting into a bath containing a reducing agent for the metal ions to form the membrane containing the metal ions incorporated therein.
Patent CA-2307582-A1 (CA)
Inventor: VISHNIA ITAI
IPC: G02B7/00
Filed: 1998-09-08
Abstract: In accordance with the invention, an improved optical assembly (200) having a monolithic structure, and an improved optical assembly having a monolithic structure and a retroreflector/beamsplitter combination is provided. The monolithic optical assembly comprises top (260) and bottom (270) plates which are joined into a monolithic structure by first (210) and second (220) mounting members and a beamsplitter (130). The assembly also comprises a first reflecting assembly (150) in reflecting relation with the beamsplitter (130). An alternate embodiment of the invention substitutes the monolithic structure having the above six components, with a monolithically constructed hollow comer-cube retroreflector (400), wherein one of the retroreflector panels is a reflecting surface (420), another panel (situated at a 45 degree angle to the reflecting surface of the first panel) is a beamsplitter (410), and a third panel is a support panel (430) used to complete the construction of the hollow corner-cube retroreflector (400).
Patent CA-2307653-A1 (CA)
Inventor: LABERTEAUX KENNETH P
IPC: H04M1/58
Filed: 1998-11-13
Abstract: An echo canceller circuit (25) for use in an echo canceller system is set forth. The echo canceller circuit (25) comprises a first digital filter (35) having non-adaptive tap coefficients to simulate an echo response occurring during a call. A second digital filter (30) having adaptive tap coefficients to simulate an echo response occurring during the call is also used. The adaptive tap coefficients of the second digital filter (30) are updated over the duration of call. A  coefficient transfer controller is disposed in the echo canceller circuit to transfer the adaptive tap coefficients of the second digital filter (30) to replace the tap coefficients of the first digital filter (35) when a value, E(~), is greater than a value, E(-), and, concurrently, when E(~), is greater than a value E max. The value of E(-) corresponds to the ratio between a signal-plus-echo signal and a first echo compensated signal using the first digital filter. The value of E(~) corresponds to the ratio between the signal-plus-echo and a second echo compensated signal using the second digital filter (30). The value of E max corresponds to the largest E(~) experienced over at least a portion of the duration of the call and at which a transfer occurred.
Patent CA-2307976-A1 (CA)
Title: Novel production intermediate and process for producing pyridine derivative
Inventor: LEE HUN JU
IPC: C07D213/50
Filed: 1995-09-21
Abstract: This invention relates to: (1) a compound represented by the formula (V), its tautomer and a mixture of the same; (2) a process for producing the compound represented by the above-mentioned formula (V), its tautomer or a mixture of the same, which comprises reacting N-vinylpiperidone represented by the formula (I) with a nicotinate represented by the formula (II), wherein R represents a lower alkyl group, in the presence of a sodium alkoxide; (3) a process for producing a pyridine derivative represented by the formula (III), which comprises producing the compound represented by the formula (V), its tautomer or a mixture of the same by the process as described in the above (2), and then treating the obtained compound with an acid; and (4) a process for producing a pyridine derivative represented by the formula (IV), in which the treatment with an acid as described in the above (3) is followed by another treatment with a base.      Thus, the present invention provides industrial processes for producing pyridine derivatives represented by the formulae (III) and (IV) safely, economically, easily and efficiently without using any hazardous reagents.   (See formulae I, II, and III) (See formulae (IV and V)
Patent CA-2309152-A1 (CA)
Title: Apparatus and method for simultaneous measurement of mass and heat flow changes
Inventor: SMITH ALLAN L
IPC: G01N25/18
Filed: 1998-12-02
Abstract: Provided is a mass and heat flow measurement apparatus comprising sample and reference microresonators (70, 80), such as sample and reference quartz crystal microbalances; sample and reference heat flow sensors (75, 85), such as sample and reference isothermal heat conduction calorimeters; and sample and reference heat sinks coupled thermally to the heat flow sensors. The apparatus may be used to measure changes in mass due to sample (8) on a surface of the sample microresonator and also to measure heat flows from the sample (8) on the surface of the sample microresonator by utilizing the heat flow sensors, which are coupled thermally to the corresponding sample or reference microresonators. Also provided is a method for measuring the mass of a sample (8) and the flow of heat from the sample (8) to the heat sink by utilizing such apparatus.
Patent CA-2309528-A1 (CA)
Title: Simultaneous determination of forward and reverse abo blood group
Inventor: REIS KATHLEEN J
IPC: G01N33/577
Filed: 2000-05-25
Abstract: Simultaneous forward and reverse blood group testing is described using both a visual detection system and a fluorescent based labeling and detection system. Forward and reverse tests could be performed separately, but A and B agglutinates can be detected and discriminated simultaneously.
Patent CA-2310398-A1 (CA)
Title: 5h-pyrano[2,3-d:6,5-d']dipyrimidine derivatives having an antibacterial, antiviral and immuno-modulating activity
Inventor: ASHKINAZI RIMMA ILIINICHNA
IPC: A61P31/04
Filed: 1997-11-19
Abstract: The present invention relates to the production of new substances having an antibacterial, antiviral, immuno-modulating and anti-tumoral activity. This invention more precisely relates to the synthesis of 5H-pyrano[2,3-d:6,5-d']dipyrimidine derivatives of general formula (I) where R1 represents a hydroxy group, a mercapto group or halogen, R2 represents a hydroxy group, an alkoxy group or halogen and R3 is hydrogen or aryl. In the preferred embodiments of the above-mentioned substances, the following conditions are observed: when R1=R2=OH, R3=4-O2NC6H4 (I); when R1=R2=Cl, R3=C6H5 (II); when R1=R2=OH, R3=4-IC6H4 (III); when R1=R2=OH, R3=H (IV); when R1=OH, R2=OCH3 and R3=4-O2NC64 (V); when R1=R2=OH, R3=4-ClC6H4 (VI); when R1=R2=OH, R3=4-BrC6H4 (VII); when R1=SH, R2=OH and R3=4-ClC6H4 (VIII); and when R1=SH, R2=OH and R3=4-O2NC6H4 (IX).
Patent CA-2311790-A1 (CA)
Inventor: DUBE DENNIS W
IPC: H04L12/46
Filed: 1999-09-17
Abstract: A bridge is disclosed for providing a connection between a MODBUS Plus network and an Ethernet Network. The bridge includes a MODBUS circuit board, an Ethernet circuit board, and a CPU. The MODBUS circuit board is operably coupled to the local area network for receiving a message from an originating node having a five-byte routing path field. The CPU is operably connected to the circuit board for extracting a table location in response to a third byte within the routing path field. The Ethernet circuit board is operably connected to the CPU and the Ethernet network for forwarding the message to an IP destination in response to the table location.
Patent CA-2313014-A1 (CA)
Title: Methods for the detection of chromosomal aberrations
Inventor: LAPIDUS STANLEY N
IPC: C12Q1/68
Filed: 1998-12-03
Abstract: Methods are provided for detecting fetal chromosomal aberrations by detecting statistically-significant differences between normal and aberrant chromosomes.
Patent CA-2313641-A1 (CA)
Inventor: LORINCZ ATTILA T
IPC: C12Q1/68
Filed: 1998-12-11
Abstract: This invention provides a novel universal collection medium for cell collection. The medium allows for the first time the ability to perform cytology and direct molecular analysis on cells preserved in a single sample.  This invention also provides novel methods for analyzing cells to assess human conditions.
Patent CA-2314394-A1 (CA)
Title: Edge sealant formulation for wood-based panels
Inventor: IZAN JERRY D
IPC: C08K5/00
Filed: 2000-07-19
Abstract: In one aspect, the present invention provides a formulation for sealing the edge of a wood-based. panel. The formulation includes a butylacrylate latex, a solution of a wax in oil, a surfactant, and water. In another aspect of the invention, a wood-based panel that is edge-sealed with a sealant formulation is provided.
Patent CA-2315219-A1 (CA)
Inventor: STREET LESLIE JOSEPH
IPC: A61P43/00
Filed: 1999-01-08
Abstract: A class of substituted 1,2,4-triazolo4,3-b!pyridazine derivatives, possessing an optionally substituted cycloalkyl, phenyl or heteroaryl substituent at the 3-position, a substituted alkoxy moiety at the 6-position, and an optionally substituted bicycloalkyl ring system at the 7-position, are selective ligands for GABAA receptors, in particular having high affinity for the .alpha.2 and/or .alpha.3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.
Patent CA-2316667-A1 (CA)
Inventor: SEIDEL RUDIGER
IPC: B01J39/04
Filed: 2000-08-24
Abstract: The present invention relates to a process for preparing novel, monodisperse anion exchangers and to their use.
Patent CA-2317649-A1 (CA)
Title: Induction heating device and process for controlling temperature distribution
Inventor: FISHMAN OLEG S
IPC: H05B6/02
Filed: 1999-10-25
Abstract: An induction heating device (10) for controlling the temperature distribution in an electrically conductive material, or susceptor (60), when heated by induced eddy currents in the material. A non-electrically conductive material can be heated in a controlled manner by placing the material near to the susceptor. Variable power is applied to multiple induction coil sections (40) wound around the length of the susceptor from a power source by one or more switching circuits (30). The coil sections can be overlapped (80) or counter-wound (121) between adjacent coil sections, or provided power in a cascaded manner, to achieve desired temperature distributions in the susceptor. A control circuit (50) is used to control the power applied to each coil section and the output of the power source. By placing a non-electrically conduction material near to the susceptor the material can be heated in a controlled manner.
Patent CA-2319318-A1 (CA)
Title: Methods of treatment using mao-a and mao-b inhibitors such as l-deprenyl
Inventor: THOMAS THOMAS N
IPC: A61K31/425
Filed: 1999-01-26
Abstract: Effects of MAO-A or MAO-B inhibitors such as L-deprenyl on both cerebral and peripheral vasculature, on non-vascular smooth muscle, on the nervous system, and on platelets, RBC, WBC, mast cells, macrophages, and glial cells are disclosed. The effects are the result of a mode of action for MAO-A or MAO-B  inhibitors such as L-deprenyl which is totally unrelated to selective inhibition of MAO-A and/or MAO-B. Therapeutic methods of using MAO-A or MAO-B  inhibitors such as L-deprenyl to treat a variety of disorders are disclosed.
Patent CA-2320172-A1 (CA)
Inventor: RUNE JOHAN
IPC: H04W60/00
Filed: 1999-02-02
Abstract: Methods and apparatus allow a communications network and a mobile terminal to dynamically negotiate for a preferred location area registration scheme, a preferred communications protocol and/or a preferred communications standard.  As a result, differently configured equipment can coexist within a single network, and advanced schemes, protocols and/or standards can be gradually introduced into implemented systems. According to an exemplary embodiment, a mobile terminal and a network negotiate, upon an initial registration of the terminal with the network, for a location area registration scheme to be used for tracking terminal movement. In the embodiment, available location area registration schemes are numbered according to complexity level, and numbers corresponding to schemes which the terminal and the network can implement are used to negotiate a preferred, mutually acceptable scheme. When the terminal enters an area in which the prevailing scheme is no longer supported, or where the prevailing scheme is no longer the best available scheme, the terminal and the network renegotiate for a new best, mutually agreeable scheme.
Patent CA-2322842-A1 (CA)
Title: Process for the enzymatic separation of enantiomers of 3(r)- and 3(s)-hydroxy-1-methyl-4-(2,4,6-trimethoxyphenyl)-1,2,3,6-tetrahydropyridine or its carboxylic acid esters
Inventor: HOLLA WOLFGANG
IPC: C12P7/62
Filed: 1999-02-20
Abstract: The invention relates to a method for producing optically pure compounds of 3(R)- and 3(S)-hydroxy-1- methyl-4-(2,4, 6-trimethoxyphenyl)-1, 2,3,6tetrahydro-pyridine or its carboxylic acid esters by reacting the enantiomer mixtures stereoselectively, using an enzyme.
Patent CA-2323219-A1 (CA)
Inventor: JUSTINIANO JOSEPH G
IPC: H02G3/14
Filed: 2000-10-12
Abstract: A snap-in assembly of a wallplate to a heat sink is achieved by placing notches in the ends of the heat-dissipating fins of the heat sink which receive in locking engagement the free ends of tabs placed along the inside of the peripheral wall, at the top and bottom ends, of the rear surface of the wallplate. The wallplate can be removed from the heat sink and reinstalled as desired.
Patent CA-2330635-A1 (CA)
Title: Environment simulation apparatus and method
Inventor: ALM RICHARD RONALD
IPC: H04N7/088
Filed: 1999-05-05
Abstract: A method and apparatus for simulating at a second location, at least one feature of an environment at a first location. The apparatus includes a signal generator for generating signals representative of the environment at the first location and an environment simulator at the second location. The signal generator includes at least one measurement device for producing at least one environment signal indicative of a property of the environment, a television camera for producing at least one television signal in response to visual and audio stimuli as observed from the first location, and an inserter for producing a composite signal including the environment signal and the television signal. The environment simulator includes a receiver for receiving the composite signal including the environment signal and the television signal representing the environment, a television data decoder for decomposing the composite signal into the television signal and the environment signal, transducers for producing images and sounds in response to the television signal and, a transducer for controlling at least one feature of the environment in response to the environment signal.
Patent CA-2332672-A1 (CA)
Title: Multimedia call routing in an ip network
Inventor: GALLICK ROBERT L
IPC: H04L29/06
Filed: 2001-01-30
Abstract: A feature server, e.g., a stored program control-ler, processes calls to a subscriber's main directory number in a packet network by submitting a subscriber-administered questionnaire to callers. The information in the questionnaire, when completed by the calling party, can be used to automatically route the call or to reposition the call in the incoming call queue.      Alternatively, the completed, or even partially com-pleted questionnaire may be displayed in a "pop up" window to a subscriber's operator who can then use the information to assist the caller or, without need of answering the call, to reposition the call within the queue or to divert the call to another directory num-ber. In addition, information previously provided in a questionnaire completed by a caller is stored so that when the caller calls again, the stored information may be employed to more efficiently process the call.
Patent CA-2333168-A1 (CA)
Inventor: BERRIE PETER
IPC: H04M7/12
Filed: 1999-06-01
Abstract: There is described a method of providing a connection service between a user's terminal (1) connected to a telephone network (2) and the public Internet (6) through a point-of-presence (3). In this method, the user's computer dials a connection service access telephone number and a connection is created between the user's terminal (1) and the point-of-presence (3). The point-of-presence (3) then checks that the dialled connection service access telephone number is one of one or more valid connection service access telephone numbers. If the dialled connection service access number is valid then the point-of-presence (3) transmits an allocated Internet network address to the user's terminal (1). The point-of-presence (3) then provides a connection between the user's terminal (1) and the public Internet (6) for messages containing the allocated network address.
Patent CA-2333336-A1 (CA)
Title: Lock handle assembly for casement windows
Inventor: CHIAIA JOHN A
IPC: E05B17/20
Filed: 2001-01-31
Abstract: A lock handle assembly for a multi-point casement window is disclosed. The lock handle assembly includes an escutcheon for mounting to the inside surface of the frame.  The escutcheon includes an elongated body which features an inner side facing away from the inside surface of the frame and an outer side that extends through the inside surface of the frame. The escutcheon further includes an elongated slot for receiving a handle through the inner side of the escutcheon. The slot comprises an upper end and a lower end defined by upper and lower walls respectively. The handle is pivotally connected to the escutcheon by a shaft having an axis that extends transversely through the slot. The shaft further connects a movable link to the handle. The shaft also passes through a fixed gear which is secured to the escutcheon. The fixed gear includes an arcuate gear. The movable link includes a proximal end pivotally connected to the shaft in a distal end pivotally connected to a drive gear link. The drive gear link includes a distal end pivotally connected to a movable link and a proximate end including an arcuate gear enmeshed with the arcuate gear of the fixed gear. The distal end of the drive gear link also is pivotally connected to the connecting link at a connecting axis. This design enables the handle to undergo a relatively short range rotation ranging from about 100° to about 140° while moving the connecting axis through an arcuate path defined by an angle ranging from about 140° to about 180°. The handle and escutcheon present a relatively low profile on the inside surface of the sash.
Patent CA-2333485-A1 (CA)
Inventor: MAAGHUL KIRSTEN
IPC: A47L1/15
Filed: 2001-01-31
Abstract: A hand-held glass cleaning device is provided.      Packaging for the device provides a cleaning section including a cleaning compartment and a drying section including a drying compartment. A wet medium capable of retaining moisture and releasing moisture upon application of pressure is disposed within the cleaning compartment. A cleaning fluid is in contact with the moisture retaining medium. A dry medium capable of absorbing and removing moisture and drying a surface is disposed within the drying compartment. The cleaning section and preferably the drying section include an end portion openable to expose a portion of the respective medium. A mid section of the device between the cleaning compartment and the drying compartment may be bendable.      The device is particularly suitable for cleaning awkward surfaces such as interior windshields of automobiles.
Patent CA-2333794-A1 (CA)
Title: Method and composition for removing sulfides from hydrocarbon streams
Inventor: WIENINGER PETER H
IPC: C10L3/10
Filed: 2001-02-01
Abstract: A method and composition for reducing the levels of hydrogen sulphide and mercaptans in hydrocarbon streams. The method comprises contacting the gas stream with a composition comprising the reaction product of mixing monoethanolamine, diglycolamine and formaldehyde. The use of the method and composition alleviates problems associated with crystalline dithiazine depost build-up associated with the use of triazine based scavengers.
Patent CA-2333942-A1 (CA)
Inventor: GRESO AARON J
IPC: C06B31/28
Filed: 1999-05-17
Abstract: A pyrotechnic gas generant composition includes a high oxygen balance compound or fuel, preferably, azodiformamidine dinitrate, which is the resulting reaction product of an aminoguanidine salt and nitric acid. Specifically, the high oxygen balance compound or fuel of the present invention is the resulting reaction product of aminoguanidine salts, such as aminoguanidine nitrate, aminoguanidine bicarbonate, or aminoguanidine sulfate with nitric acid.  Preferably, the aminoguanidine salt is aminoguanidine bicarbonate. The resulting reaction product is a yellow precipitate that can be used alone, with or without oxidizers or other additives, for very rapid self-deflagration or in combination with oxidizers and additives. In each instance, the gas generant composition provides both high gas output and low production of solid combustion products. Further, the precipitant is relatively non-hygroscopic and has a high burn rate. The gas generating composition is useful as a gas generator for an air bag of an occupant restraint system for an automobile, gun propellants, inflation and expulsion devices, flotation devices, pyrotechnics, fire suppression devices and smokeless, reduced smoke and smokey rocket propellants.
Patent CA-2336816-A1 (CA)
Title: Polyethylene compositions having improved optical and mechanical properties and improved processability in the melted state
Inventor: ANIBALDI REMO
IPC: B32B27/32
Filed: 1999-07-02
Abstract: Polyethylene composition comprising (percentages by weight): A) from 60 to 9 5 % of an LLDPE copolymer having a density from 0.905 to 0.935 g/cm3, Mw/Mn values less than 4 and F/E ratio values greater than 20; B) from 5 to 40 % o f one or more crystalline copolymers of propylene selected from among defined copolymers of propylene with ethylene and/or higher alpha-olefins.
Patent CA-2336896-A1 (CA)
Inventor: ARORA ARUN
IPC: G01N21/76
Filed: 1999-07-12
Abstract: An electrochemiluminescence apparatus comprises a reaction vessel; means for generating an electric field (140, 160) within at least a region (120) of the reaction vessel; and one or more reaction electrodes (180) disposed in the electric field region of the reaction vessel, the reaction electrodes being arranged to float in or on a solution in the reaction vessel.
Patent CA-2336974-A1 (CA)
Inventor: EATON PAUL NIGEL
IPC: C04B28/24
Filed: 1999-09-14
Abstract: L'invention concerne des mastiques qui comprennent les éléments suivants, séparés ou combinés: (1) (a) des fibres réfractaires de silicate de métal terreux alcalin; et (b) de la silice colloïdale présentant un pH inférieur à 8; (2) (a) des fibres réfractaires de silicate de métal terreux alcalin et (b) un modificateur de la viscosité de polymère non ionique; (3) des fibres réfractaires de silicate de métal terreux alcalin et (b) un ligand de complexage de calcium multicoordinant.