baber/WOPTO huggingface dataset:
Patent CA-2208305-A1 (CA)
Title: Radio frequency ion source
Inventor: TODD JOHN FRANCIS JAMES
IPC: H01J49/10
Filed: 1995-12-14
Abstract: An rf ion source suitable for low power operation over a range of pressures in air comprises discharge electrodes having one or more cathodes (1) and an anode (2). Each cathode (1) is connected to an rf signal supply (8) through an associated coupling means (4) and the anode (2) is adapted to provide a surface area over which a plasma discharge may occur that is not substantially greater than the total cathodal area over which the discharge may occur. In this way the anode (2) presents no more useful surface than is required to accommodate the optimum area of the plasma discharge thereby preventing plasma wander and enhancing the stability of the discharge over known ion sources. By configuring the electrodes such that the respective areas of the anode and the cathode(s) over which discharge occurs are separated by no more than 5 mm and by forming the electrodes to have highly curved ends and so creating a higly distorted electric field in the inter-electrode gap when the source is in operation, it is possible to create an effective discharge with very low power input even at atmospheric pressure.
Patent CA-2208894-A1 (CA)
Inventor: WILLIAMS ROBERT M
IPC: F23K1/00
Filed: 1997-06-25
Abstract: Apparatus for grinding material which enters the grinder in a wet condition and is subject to drying heat at the grinder to leave moisture in the ground material directed for independently material separation so the propelling initially hot gases looses its temperature level before returning to the grinder.  A portion of the returning gases carrying ground fine with moisture therein is directed into a bag house to recover the fines and a portion of the drying heat is directed into the bag house to independently maintain a temperature level above the dew point temperature level in the bag house to prevent moisture from plugging the bag house.  The apparatus provides two circulation loops, each with its independent moisture control, and a common transport for collecting product from each loop.
Patent CA-2210039-A1 (CA)
Title: A process for the extraction of lycopene and extracts containing it
Inventor: SEGHIZZI ROBERTO
IPC: C09B61/00
Filed: 1997-07-10
Abstract: The present invention relates to a process for the preparation of pure lycopene or of lipophilic extracts containing it from whole fruits of Lycopersicum esculentum and similar species or parts thereof obtainable as by-products of food industry processes. The partially dehydrated fresh material is extracted with aliphatic or aromatic hydrocarbons or water-immiscible solvents in the presence of phospholipids as surfactant and stabilizing agents and the extracts are concentrated to an oil or fractionated to the desired lycopene concentration.
Patent CA-2211714-A1 (CA)
Inventor: BELDING WILLIAM A
IPC: F24F3/14
Filed: 1995-10-05
Abstract: An improved adsorbent composition for a natural gas-fired, adsorption cooling system that readily adsorbs moisture from ambient air, while being readily regenerated at high temperatures up to 200-300 ~C in order to provide an enhanced coefficient of performance to the system. Such an adsorbent composition may comprise an A-type zeolite, an X-type zeolite or a chemically modified Y-type zeolite either alone, in conjunction with each other or in conjunction with alumina and/or silica gel. A rotating adsorbent wheel may be fashioned from corrugated paper comprising the adsorbent composition and a slurry of synthetic, organic fibers which are preferably polyaramid fibers.  The strength of the wheel may be enhanced by surface treating it with sols or salt solutions of alumina or silica, and a highly temperature-stable epoxy or phenolic resin.
Patent CA-2212230-A1 (CA)
Title: Apparatus for ultrasonic bone treatment
Inventor: RYABY JOHN P
IPC: A61B17/00
Filed: 1995-03-02
Abstract: The apparatus is used for therapeutically treating injuries using ul-trasound. The apparatus includes an ergonomically constructed ultrasonic transducer treatment head module (14) partially fabricated with a conduc-tive plastic material. The apparatus also utilizes a portable, ergonomically constructed main operating unit (12) constructed to fit within a pouch (18) worn by the patient. In operation, the transducer treatment head module (14) is positioned adjacent the area of the injury and excited for a predetermined period of time. To ensure that the transducer treatment head module (14) is properly positioned, and to ensure compliance with a treatment pro-tocol, a safety interlock is provided to prevent inadvertent excitation of the transducer.
Patent CA-2212391-A1 (CA)
Title: Movable object carrying electronically stored data to be read and/or overwritten by a non-contact reading/writing device
Inventor: MAEDER CARL CONRAD
IPC: G06K19/077
Filed: 1997-08-06
Abstract: The invention concerns a movable object, e.g. a roll of printed products (1) with a winding core (2) onto which printed products are wound with the help of a winding tape (3). The inventive movable object carries data stored in an integrated circuit (23) and an antenna, whereby the data can be read or overwritten respectively without contact by a reading/writing device with a main reading direction (L). The antenna is designed as an antenna loop (5) with a gap, whereby the ends of the loop (5) are contacted with the integrated circuit which is e.g. arranged on a connecting piece and whereby an antenna area is defined by the antenna loop (5). The object is positionable relative to the reading/writing device (10) such that the main reading direction (L) penetrates the antenna area vertically or obliquely.
Patent CA-2212769-A1 (CA)
Inventor: ENG GLENN D
IPC: G06F13/28
Filed: 1997-08-12
Abstract: A computer memory system that stores data in a first and second memory banks, and is capable of providing burst access is disclosed. The system comprises first and second memory banks. Each bank has a plurality of address lines; an output enable line and data lines. Each bank stores numerous elements of data. The data lines of the two banks are interconnected to a data bus. An address controller is connected to the address lines of the banks and is to be connected to address lines of a CPU. The addresscontroller maps a CPU address at CPU address lines to an address at the address lines of one of the banks. An output enable controller is further connected to the output enable lines of the first and second memory banks. The output enable controller is alsointerconnected to the address lines of the CPU. When the CPU reads data from an address mapped to the address lines of the first or second bank, the output enable controller enables the first or second memory bank, respectively, and disables the other bank. The address controller further comprises a first indexer and a second indexer, the indexers are connected to the CPU address lines and to the bank address lines to provide the address to be read and a subsequent address to the first and second memory banks. Further, the system of comprises a counter circuit connected to the indexers adapted to increment addresses at the first and second address lines during a burst read operation. A method used by this system is also disclosed.
Patent CA-2213329-A1 (CA)
Inventor: HOTCHKIN DARREN JOHN
IPC: E01F9/627
Filed: 1996-02-19
Abstract: La présente invention vise un élément servant à supporter un dispositif d'affichage (17). L'élément support comporte une section résiliente (3) conçue pour fléchir lorsqu'un objet mobile entre en contact avec le dispositif d'affichage (17), de manière à éloigner ce dernier de la trajectoire de l'objet, puis à le ramener à sa position première une fois l'objet passé. La section résiliente (3) est constituée d'une série d'éléments plans disposés côte à côte et liaisonnés au moyen d'un adhésif. Chaque élément plan est constitué d'une partie de bande de roulement et de carcasse sous-jacente de pneu d'automobile.
Patent CA-2214047-A1 (CA)
Title: Method of cutting and cutting rotative bit
Inventor: JUE VINCENT
IPC: E21C35/183
Filed: 1996-02-26
Abstract: A cutting, self-rotating, and self-sharpening tool has a rotatable cutting element (2), generally circular, which is mounted and displaced so that the cutting element (2) has an attack angle between 90° and 120°, and a skew angle between 5° and 40°. The cutting element (2) has a convex front face and relief and rake angles that vary along the perimeter of the cutting edge.
Patent CA-2214481-A1 (CA)
Title: Device for the treatment of blood through cardiopulmonary bypass and fabrication process
Inventor: VALETTE PIERRE
IPC: B01D63/02
Filed: 1997-09-18
Abstract: Connector (I) for attachment to an inlet of a blood or plasma circulation compartment of a device for extracorporeal blood or plasma treatment comprises a soluble biocompatibility-enhancing substance in an amount such that a durable film of the substance will be deposited on the internal surface of the blood compartment when a predetermined amount of an aqueous solution is passed through the blood compartment via the inlet. Connector (I) for attachment to an inlet of a blood or plasma circulation compartment of a device for extracorporeal blood or plasma treatment comprises a soluble biocompatibility-enhancing substance in a form such that the substance is unchanged when the connector is sterilized by irradiation and in an amount such that a durable film of the substance will be deposited on the internal surface of the blood compartment when a predetermined amount of an aqueous solution is passed through the blood compartment via the inlet.
Patent CA-2214848-A1 (CA)
Inventor: CHAN YOU-PING
IPC: C08F246/00
Filed: 1996-03-21
Abstract: Novel spiropyran compounds, particularly with photochromic properties, are disclosed, as well as photochromic compositions and ophthalmic articles (e.g. lenses) containing said compounds. The photochromes have been designed so as to have a high colorability, a high sensitivity to activating radiation breaking the pyran ring, to be entirely or practically free from coloration in a non activated (non exposed) state, to have an intense coloration following activation and a high coverage of the visible spectrum in combination with at least one other photochrome, and to have high rates of coloration/decoloration. The spiropyrans are easily produced and photochemically stable, and are, e.g., of formula (i), wherein L = (a); (b).
Patent CA-2219966-A1 (CA)
Title: Process for the production of vinyl acetate
Inventor: KITCHEN SIMON JAMES
IPC: B01J37/16
Filed: 1997-11-03
Abstract: A process for the production of vinyl acetate which comprises contacting ethylene, acetic acid and an oxygen-containing gas with a supported palladium catalyst prepared by a process comprising the steps of (a) impregnating a catalyst support with a palladium compound, (b) converting the palladium compound to substantially metallic palladium, and (c) sintering the supported palladium at a temperature of greater than 500°C.
Patent CA-2220961-A1 (CA)
Title: Pressure sealed housing apparatus and methods
Inventor: POWELL ROGER E II
IPC: G01L13/00
Filed: 1996-05-20
Abstract: A selectively pressured housing apparatus comprising a body, a wall member, an aperture, and a mounting seat. The body has a chamber therein extending along a first axis, is open at a first axial end and a second axial end, and has a port extending along a second axis transverse to the first axis. The port communicates with the chamber.      The wall member is inside of the body and extends transverse to the first axis and parallel to the second axis and divides the chamber into first and second compartments, axially spaced along the first axis.      The port communicating with the chamber is in the second compartment. The aperture extends through the wall member and connects the first and second compartments. The mounting seat is on the wall member and extends circumferentially about the aperture for removably and replaceably seating an element with a selected pressure seal to the wall member. According to one preferred embodiment, the first and second compartments are employed for housing process electronics associated with a differential pressure transmitter.
Patent CA-2220981-A1 (CA)
Title: Vial holder
Inventor: CONSTABLE KEVIN N
IPC: B65D85/20
Filed: 1996-05-15
Abstract: A holder suitable for holding vials for transport on a conveyor line comprising a body (1) having a cavity (2) therein open at an upwardly facing side (4), being of suitable size and shape to receive the lower part of a vial (3), the cavity (2) having a wall surface in which are one or more recesses (6), in each recess (6) being a resilient member (7) extending into the cavity (2), to a distance sufficient to grip a vial (3) inserted into the cavity.
Patent CA-2221380-A1 (CA)
Title: Diaryldiamine derivatives and their use as delta opioid (ant)-agonists
Inventor: DONDIO GIULIO
IPC: C07C217/84
Filed: 1996-05-20
Abstract: A class of diaryldiamine derivatives of formula (I) in which R1 and R2, are each hydrogen, alkyl, cycloalkyl, cycloalkenyl, cycloalkylalkyl, alkenyl, alkynyl, aryl, aralkyl or furan-2 or 3-yl alkyl or may form together a C3-7 alkyl ring which may be interrupted by an oxygen; R3 and R4, are each hydrogen, alkyl, or R4 is oxygen forming with the carbon atom to which is attached a C=O group; R5 is hydrogen, hydroxy, alkoxy, thiol or alkylthio; R6 is phenyl, halogen, NH2 or a para or meta -C(Z)-R8 group, in which Z is oxygen or sulphur; R8 is alkyl, alkoxy or NR9R10, wherein R9 and R10 are hydrogen, alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, aryl, aralkyl, or R6 is a para or meta (a) group in which R11 and R12 are hydrogen, alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, aryl, aralkyl or an optionally substituted heterocyclic ring, and Z is as defined above; and, R7 is hydrogen, alkyl, or halogen are potent and selective delta opioid agonists and antagonists, and are of use as analgesics and for treating pathological conditions which, customarily, can be treated with agonists and antagonists of the delta opioid receptor.
Patent CA-2225370-A1 (CA)
Inventor: ROSEANU ECATERINA GABRIELA
IPC: C01C3/08
Filed: 1997-12-19
Abstract: A method for obtaining complex zinc cyanide anions from a precipitate comprising zinc hydroxide and calcium sulfate. The method comprises subjecting such a precipitate to a zinc leaching step comprising contacting the precipitate with calcium cyanide in an aqueous liquid medium so as to obtain an aqueous alkaline zinc containing solution comprising complex zinc cyanide anions and a remaining product precipitate comprising calcium sulfate.
Patent CA-2228394-A1 (CA)
Title: Novel catalase, the gene thereof and composition comprising the same, and process for preparing catalase using genetic engineering technology
Inventor: CHANG LI-YEN EDWARD
IPC: A61L2/18
Filed: 1998-02-25
Abstract: The invention provides a novel catalase which is cloned from Bacillus theremoglucosidasius. The invention further provides a process for preparing catalase in high yield, which comprises constructing expression vectors and transformant cells with catalase genes cloned from microorganisms using genetic engineering technology, and obtaining the expression product. The invention also provides a novel recombinant plasmid and a novel transformant cell constructed in the process. In addition, the invention provides a composition for decomposing hydrogen peroxide contained in the residual disinfectant on contact lenses, which comprising the novel catalase of the invention.
Patent CA-2235706-A1 (CA)
Inventor: RAHN MARTIN
IPC: C01F7/445
Filed: 1996-11-02
Abstract: A process for producing water-free aluminium oxide from aluminium hydroxide in a circulating fluidised bed comprising a fluidised bed reactor (8), separator (6) and return flow line involves the following steps: the aluminium hydroxide is fed into the gas-side second stage of a two-stage suspension pre-heater (2) operated by the waste gases from the fluidised bed reactor (8) of the circulating fluidised bed and at least partially dewatered; dewatered aluminium hydroxide from the second stage of the suspension pre-heater (2) is fed into the gas-side first stage of a suspension pre-heater (5) operated by the waste gases from the fluidised bed reactor (8) of the circulating fluidised bed, further dewatered and then fed into the circulating fluidised bed which is operated by oxygen-containing fluidisation gas (10) indirectly heated in a subsequent cooling stage by the aluminium oxide produced and by oxygen-containing directly heated secondary gas (11) fed in at a higher level. The temperature in the circulating fluidised bed is set at between 850 and 1000 °C. The aluminium oxide removed from the circulating fluidised bed is mixed for at least two minutes with 10 to 25 wt.% of the partially dewatered aluminium hydroxide yielded by the solid-side first stage of the suspension pre-heater (2) and led past the circulating fluidised bed as a by-pass. The mixed material is then cooled in a multistage suspension cooler (15, 16, 17, 18, 19, 20), heating secondary gas (11), and then in the fluidised bed cooler (23), indirectly heating fluidisation gas (10).
Patent CA-2238317-A1 (CA)
Title: Improving the modifiability of computer management system to include selector part
Inventor: NAERVAENEN PIA
IPC: G06F13/00
Filed: 1996-11-22
Abstract: The invention relates to a method for implementing a data system providing computer-controlled services. According to the method, (a) a controlling part (11) of the system is divided into an unchanging part (14) and changing parts (MO) which model, within the controlling part, the elements representing the real world and communicate with them to provide a user with services, (b) a part (12) of the system representing the real world is provided with elements of several different types and several different practical implementations of at least one type, and (c) a separate element is implemented in the controlling part (11) of the system, the unchanging part (14) searching from this element the concrete implementation of the changing part. In order to improve the modifiability of the system, the separate element is implemented in the form of a selector part (61) that is common to the changing parts and that selects the concrete implementation to be used on the basis of the parameters supplied thereto.
Patent CA-2238547-A1 (CA)
Inventor: HANISKO JOHN-CYRIL P
IPC: F16D66/02
Filed: 1998-05-25
Abstract: An electronic circuit connected in series with one or more brake condition sensors having a first transistor and a second transistor connected to intermittently power an indicator lamp upon initial power-up to confirm circuit operational status and subsequently to activate the indicator lamp if the brake condition sensors are acceptable and to deactivate the indicator lamp if any one of the brake condition sensors is unacceptable.
Patent CA-2239681-A1 (CA)
Title: In-phase and quadrature signal regeneration
Inventor: HUANG XINPING
IPC: H04L27/00
Filed: 1998-06-05
Abstract: The present invention relates to the regeneration of in-phase (I) and quadrature (Q) signals in electronic devices commonly used in communication, radar and instrumentation electronics. The original signal of interest comprises two orthogonal components that are mathematically modelled using complex values, which are then decomposed into a real (I) and an imaginary (Q) component. These two components are orthogonal to each other and represent fully the signal of interest. The present method adaptively compensates for the gain and phase imbalances and DC offsets in I and Q signal regeneration. First, 3 phase shifted versions of the received signal, either down-converted to some intermediate frequency (IF) or at baseband, are digitised. Although the optimum phase shift between each version is 360°/3, any phase shift different than 0° and 180° is acceptable and no a priori knowledge of the phase shifts is required.  Based on these 3 digital signals representing 3 linear combinations of the I&Q  signal components, the regeneration algorithm projects these signals into a 3-dimensional space composed of the I signal subspace, the Q signal subspace, and another subspace, referred to as the noise subspace. The projection is performed using an eigen-decomposition method where the eigenvectors associated with the I and Q signal subspaces provide linear combination coefficients for regenerating the I&Q signals. Compensation for DC offsets is performed by removing an average DC offset on the phase and gain corrected I&Q signals. The regenerated digital I and Q  signals are then converted back to analog signals, when required.
Patent CA-2241427-A1 (CA)
Inventor: WARREN PATRICK VERNON
IPC: A61P31/04
Filed: 1998-08-20
Abstract: The invention provides pyrR homolog polypeptides and DNA (RNA) encoding pyrR homolog polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are methods for utilizing pyrR homolog polypeptides to screen for antibacterial compounds.
Patent CA-2241793-A1 (CA)
Title: Rubber composition including carbon black with silica fixed to its surface and an alcoxysilane functionalized diene polymer
Inventor: LABAUZE GERARD
IPC: C08L63/08
Filed: 1998-07-09
Abstract: Vulcanisible rubber composition containing at least one functionalised dienic polymer and carbon black with silica fixed to its surface as reinforcing filler is claimed in which the polymer is functionalised by an agent with formula (Y)m-R<1>-Si(OR<2>)3-nR<3>n in which Y = (I) or (II) ; R<1> = 1-10C alkoyl, cycloalkoyl or aryl; R<2> = 1-12C alkoyl, cycloalkoyl, aryl, alkylaryl or arylalkyl; R<3> = 1-12C alkoyl, aryl, alkylaryl; R<4> = 1-6C hydrocarbon with one or more oxygen atoms; n = 0 or 1; m = 1 or 2; and p, q = 0, 1, 3 or 4 so that p + q =2-5; polymer satisfying relationships PF = Ns divided by ÄNp x fn) ≥ 0.85 and PV = Ne divided by (Ns x m) ≥ 0.90 in which Ns = number of mol. of silicon, Np = number of mol. of functionalised polymer, fn = functionality of polymerisation initiator, and ne = number of mol. of epoxy functions linked to extremity of chain. Also claimed are pneumatic tyre and tread made from the composition.
Patent CA-2242725-A1 (CA)
Title: Simultaneous transmission of ancillary and audio signals by means of perceptual coding
Inventor: LU DAOZHENG
IPC: G10L25/00
Filed: 1997-02-25
Abstract: A communication system for simulataneously transmitting ancillary codes and audio signals via a conventional audio communications channel using perceptual coding techniques is disclosed. An encoder monitors an audio channel to detect "opportunities" to insert an ancillary code such that the inserted signals are masked by the audio signal, as defined by the "perceptual entropy envelope" of the audio signal. An ancillary code containing, for example, an ID or serial number, is encoded as one or more whitened spread stpectrum signals and/or a narrowband FSK ancillary code and transmitted at a time, frequency and/or level such that the data signal is masked by the audio signal. A decoder at a receiving location recovers the encoded ID or serial number.
Patent CA-2243534-A1 (CA)
Title: Process for the preparation of d-threo-(r,r)-methylphenidate and recycling of undesired enantiomers by epimerisation
Inventor: LANGSTON MARIANNE
IPC: C07D211/34
Filed: 1997-01-31
Abstract: A process for obtaining a single enantiomer, d or l, of threo-methylphenidate, comprises resolution of a mixture of the enantiomers; racemisation of the unwanted enantiomer, to give a mixture of all four stereoisomers; and separation of the erythro stereoisomers, to leave the said mixture of enantiomers for resolution.