baber/WOPTO huggingface dataset:
Patent CA-2186620-A1 (CA)
Title: Optical sensor system for determining ph values and ionic strengths
Inventor: ALDER ALEX
IPC: C08F220/54
Filed: 1995-04-27
Abstract: A method for the independent, reversible, optical determination of the pH value and the ionic strength of an aqueous sample with the aid of two different sensors in accordance with the fluorescence method, in which method two optical sensors, which are each composed of polymers of different structure but each contains the same fluorescent dye and which each consists of a coated material composed of a) a carrier material, to which there is applied b) at least one water-insoluble layer of a polymer comprising at least one hydrophilic monomer (A) from the group of substituted olefins, and c) a proton-sensitive fluorescent dye which is bonded directly or via a bridge group to the spine of polymer b) or which is incorporated in polymer b), are brought into contact with an aqueous test sample, irradiated with exciting light, the fluorescence is measured and the pH values and the ionic strengths are calculated from the measured fluorescence intensities with reference to calibration curves.
Patent CA-2187633-A1 (CA)
Title: Superabsorbent polymers and products therefrom
Inventor: CHAMBERS DOUGLAS R
IPC: C08L101/14
Filed: 1995-04-10
Abstract: A surface cross-linked superabsorbent polymer composition, a process for its preparation and articles made therefrom wherein said superabsorbent composition is prepared by surface cross-linking the polymerization product of a carboxyl or carboxylate group containing monomer with a cross-linker solution comprising water, C3-C6 diol and a cross-linking compound having at least two functional reactive groups with the carboxyl or carboxylate groups of said polymerization product.
Patent CA-2187793-A1 (CA)
Inventor: NILSSON MICHAEL ERLING
IPC: H04N7/30
Filed: 1995-04-21
Abstract: A transcoder for the conversion of video signals between a first and a second coding scheme employing motion compensation comprises a decoder (28) for decoding a received data stream encoded according to a first coding scheme and an encoder (30) for encoding a data stream from the decoder into a data stream according to a second coding scheme. The decoder (28) extracts motion vectors from the received data stream and passes them (42) to the data stream of the encoder, so avoiding the recalculation of the motion vectors. Drift compensation means (52-64; 70-78) may be provided to compensate for any resulting drift after a picture frame.
Patent CA-2190736-A1 (CA)
Title: Ultrawideband antenna with a pulse generator
Inventor: BROOKER CLIVE JOHN
IPC: H01Q19/08
Filed: 1995-05-18
Abstract: An ultrawideband transverse electromagnetic mode horn antenna for use at high voltages, comprises a pulse generator (I) and two transmission horns (12, 18) containing different dielectric media. The interface (30) between the dielectric media is configured so that a signal from the generator is incident on the interface at an angle substantially equal to the Brewster angle, thereby maintaining a good impedance match across tile interface. A further advantage of the arrangement is that the TEM wavefront is preserved through the antenna section allowing operation at fast pulse risetime (less than 200ps) for short duration (several ns) at high voltage.
Patent CA-2190883-A1 (CA)
Title: Adenovirus including a gene coding for a superoxide dismutase
Inventor: MALLET JACQUES
IPC: A61K48/00
Filed: 1995-06-27
Abstract: A defective recombinant adenovirus including at least one DNA sequence coding for all or an active part of a superoxide dismutase or a derivative thereof. The therapeutical use thereof and corresponding pharmaceutical compositions are also disclosed.
Patent CA-2191018-A1 (CA)
Title: A process for the preparation of pentaerythritol
Inventor: EEK LLUIS
IPC: C07C29/38
Filed: 1996-11-22
Abstract: A process for the preparation of pentaerythritol, comprising reacting formaldehyde, acetaldehyde and sodium hydroxide and acidification with formic acid. These steps take place in a reactor with supplies of formaldehyde, sodium hydroxide, acetaldehyde and formic acid and at the end the solution formed is evacuated to a buffer tank of larger capacity than the reactor. In the reactor new reactions and acidifications are successively reinitiated by new supplies.     In the first place a formaldehyde solution is added, followed by simultaneous but separate additions of sodium hydroxide solution and acetaldehyde, forming a reaction mixture in such a way that the flowrates of the solutions vary with the time and that the temperature at which the reactions are conducted also varies with the time. The outflow from the buffer tank is constant and continuous.
Patent CA-2192169-A1 (CA)
Inventor: SMITH PETER JOHN
IPC: B32B5/18
Filed: 1995-06-07
Abstract: Procédé de préparation d'articles en mousse possédant une structure cellulaire fermée sans qu'il soit nécessaire d'utiliser un agent gonflant halogéné. Ce procédé consiste à effectuer l'apport dans une extrudeuse réchauffée d'un mélange de polymères composé au moins de 50 % en poids d'un polymère styrénique et de 50 % en poids maximum d'un polymère acrylique, dont le poids moléculaire moyen est inférieur à 90 % de celui du polymère styrénique, ainsi que d'un agent gonflant à base d'hydrocarbures, le mélange étant réalisé dans ladite extrudeuse et l'agent gonflant incorporé, afin d'obtenir un mélange fondu à partir duquel on retire l'article en mousse à la sortie de l'extrudeuse.
Patent CA-2195156-A1 (CA)
Inventor: HUSTON JOHN T
IPC: G01J5/04
Filed: 1997-01-15
Abstract: A pyrometer for use in measuring temperatures in a furnace, has a lens-tube for supporting an optical head in a port of the furnace for viewing an interior of the furnace along a line of sight.  The optical head converts infrared radiation to electrical signals.    A photometer circuit  connected  to  the  optical  head  processes  the electrical signals and a scaling circuit connected to the photometer circuit  scales  the electrical  signals.   An output circuit connected to the scaling circuit receives the scaled electrical signals and produces output signals for display or control of the furnace.  A  power   supply connected to the scaling circuit powers the photometer, scaling and output circuits.  Calibration in the scaling circuit scales the electrical signals to be most sensitive to a wavelength of middle infrared radiation to which at least one gas component in the furnace is semi-transparent, for measuring the temperature of the at least one gas component.
Patent CA-2197515-A1 (CA)
Title: Methods of treating milk products
Inventor: MAHMOUD REYAD
IPC: A23C9/142
Filed: 1997-02-13
Abstract: The present invention provides methods for treating milk products to reduce the bacteria and fat therein and/or to recover proteins therefrom.  In particular, the present invention provides a method of treating a milk product comprising dynamically filtering the milk product (particularly skim milk or whey) through a filtration medium having a pore rating of about 0.1-1 µm to produce a fat-depleted milk product permeate.  The present invention also provides a method of concentrating a protein in a milk product comprising dynamically filtering the milk product through a filtration medium to form a protein-enriched retentate or a protein-enriched permeate.  This method can be repeated with the protein-enriched fraction using filtration media of increasingly smaller pore ratings in order to recover particular proteins or combinations of proteins (from among many proteins in the milk product).
Patent CA-2199813-A1 (CA)
Title: Polyamides utilises en tant qu'adhesifs rehumectables
Inventor: AHMED SHARF U
IPC: C09J7/30
Filed: 1995-01-05
Abstract: Nouvel adhésif réhumectable et amélioration du procédé de collage d'une enveloppe, d'un timbre, d'un autocollant, d'une bande d'emballage ou d'une étiquette grâce à un adhésif réhumectable. Ledit adhésif réhumectable est un adhésif thermofusible constitué de polyamide thermoplastique préparé à partir d'un constituant acide sélectionné dans le groupe comprenant acide adipique, acide pimélique, acide azélaïque, acide subérique et acide sébacique et d'un constituant alkylèneoxy diamine comprenant un ou plusieurs composés diamine de formule H¿2?N-C¿y?H¿2y?-(OC¿2?H¿4?)¿x?-O-C¿y?H¿2y?-NH¿2?, dans laquelle y vaut 2 ou 3 et x vaut de 1 à 50.
Patent CA-2201416-A1 (CA)
Inventor: EDAUW PETER
IPC: A43B5/00
Filed: 1997-04-01
Abstract: A supporting frame for in-line wheels or for an ice-skating blade, including elements for the temporary engagement, centering, and locking of coupling elements which are rigidly coupled below and to the rear of a soft shoe that is adapted for walking. It is thus possible to use, for skating, a shoe used for normal walking.
Patent CA-2203630-A1 (CA)
Title: Human cell-lines
Inventor: STRINGER BRADLEY MICHAEL JOHN
IPC: C12R1/91
Filed: 1995-11-03
Abstract: The invention relates to a method for producing human cell-lines and cell and cell-lines produced by such a method. The method comprising the use of precursor or undifferentiated cells treated with an immortalising agent which is susceptible to environmental conditions so as to provide for selective activation/deactivation of said immortalising agent and so selective activation of differentiation.
Patent CA-2203857-A1 (CA)
Title: Microparticles for delivery of nucleic acid
Inventor: CURLEY JOANNE M
IPC: C12N15/87
Filed: 1997-04-28
Abstract: Disclosed is a preparation of microparticles made up of a polymeric matrix and a nucleic acid expression vector.  The polymeric matrix includes one or more synthetic polymers having a solubility in water of less than about 1 mg/l.  At least 90% of the microparticles have a diameter less than about 100 microns.  The nucleic acid is either RNA, at least 50% of which is in the form of closed circles, or circular DNA plasmid molecules, at least 50% of which are supercoiled.
Patent CA-2204108-A1 (CA)
Inventor: BARTON ROBERT
IPC: B67D7/08
Filed: 1997-04-30
Abstract: An apparatus and a process for dispensing viscous liquids which may contain particles or aggregate suspended therein, especially melted chocolate containing nuts, are disclosed. The apparatus comprises a container for holding a liquid to be dispensed, a one-cylinder liquid dispensing pump which comprises a single hollow cylindrical housing having end walls, a stationary separation baffle in a mid-portion of the housing for dividing the interior of the housing into two chambers, a piston in each of the two chmbers and a rigid rod linking the pistons, a system for supplying fluid under pressure alternately to opposite sides of the piston in the second of the two chambers to cause the pistons to reciprocate, a conduit for conveying liquid from the container to the first chamber of the dispensing pump when the pistons reciprocate in one direction, a second conduit for conveying a measured quantity of dispensed liquid from the first chamber when the pistons reciprocate in the opposite direction, and an adjustable limit stop for presetting the stroke of the piston and with it the quantity of liquid dispensed in each cycle as desired.
Patent CA-2204755-A1 (CA)
Title: Portable apparatus for using bicycles as a type of watercraft
Inventor: SIVIERO ROBERTO
IPC: B63B7/08
Filed: 1995-11-07
Abstract: Portable apparatus for using bicycles as a type of water craft comprising two oblong inflatable floats means for rapidly securing the bicycle to said floats laid parallel and means for connecting, by a flexible shaft a clutch unit ,placed in contact with the rear wheel of the bicycle, with a propulsion unit and propeller , fixed by means of a rotation joint to the front wheel of said bicycle, it being thus possible, by rotating the rear wheel of the bicycle using the ordinary pedals and handle bar to determine both forward movement and change of direction of the watercraft so created.
Patent CA-2205349-A1 (CA)
Title: Organic photochromic materials with high refractive index, their preparation and articles formed from these materials
Inventor: MEYRUEIX REMY
IPC: G02B1/10
Filed: 1995-11-09
Abstract: The invention relates to organic photochromic materials consisting of a polymer matrix of optical quality and of at least one dye that imparts photochromic properties to the matrix, the dye being selected from spirooxazines, spiropyrans and chromenes. The polymer constituting the matrix is a copolymer of 30-95 wt.% ethoxylated bisphenol A dimethacrylate and 5-70 wt.% of a polyurethane oligomer having terminal di- or triacrylic or di- or trimethacrylic functionality. Such photochromic materials are most suitable for the production of ophthalmic and sun protection lenses.
Patent CA-2206488-A1 (CA)
Title: Cytokine designated lerk-7
Inventor: CERRETTI DOUGLAS P
IPC: C07K16/24
Filed: 1995-12-05
Abstract: The invention is directed to a protein designated Lerk-7, DNA encoding the Lerk-7, and host cells transformed with Lerk-7 DNA. Antibodies directed against Lerk-7 are also provided. The Lerk-7 protein binds to the cell surface receptors known as elk and hek.
Patent CA-2206530-A1 (CA)
Title: Combined preparation for stimulating hair growth and optionally nail growth and skin regeneration and for preventing or combatting hair loss
Inventor: KLETT-LOCH LORE MARIA
IPC: A61K8/00
Filed: 1995-12-07
Abstract: The invention concerns a combined preparation for stimulating hair growth and optionally nail growth and skin regeneration, the combined preparation being in the form of a combination of active substances comprising vitamins, enzymes and amino acids. The effect of said preparation develops from within the body, the active substance combination of the combined preparation being a constituent of an orally-administered form and comprising at least: provitamin A: 1.25 wt %; vitamin B1: 0.27 wt %; vitamins of the B2 group: 5.25 wt %;  vitamin B6: 0.37 wt %; vitamin B12: 0.001 wt %; vitamin C: 15.61 wt %; vitamin E: 2.5 wt %; coenzyme Q 10: 1.04 wt %; methionine: 0.02 wt %; and cystine:  0.018 wt %. In order to increase its efficiency, the preparation is used to complement a topically-applied hair-growth stimulant, in particular a thymus-containing therapeutic agent.
Patent CA-2207011-A1 (CA)
Title: Discontinuous probe design using hybritope mapping
Inventor: COLLINS MARK L
IPC: C12Q1/68
Filed: 1995-12-05
Abstract: This invention provides a method of detecting or determining a binding oligonucleotide comprising a nucleotide sequence which binds within a known nucleotide sequence of a target nucleic acid using a technique called hybritope mapping. This invention also provides a method of using hybritope mapping to obtain discontinuous probes that bind to a target nucleic acid.
Patent CA-2207758-A1 (CA)
Title: Device for performing one or more competitive immunoassays
Inventor: HAMILTON MARTHA J
IPC: G01N33/543
Filed: 1995-12-13
Abstract: A device and related method for performing one or more immunoassays to detect the presence of respective analytes in a sample. The device involves the use of a unitary bibulous material providing one or more flow paths having a common origin site and a plurality of respective reagent zones providing the reagents necessary for performing a visual readout, competitive immunoassay for the presence of the respective analyte.
Patent CA-2208239-A1 (CA)
Inventor: NEUMANN-GRIMM DORIS
IPC: C07C229/56
Filed: 1997-06-19
Abstract: The present invention relates to a process for the preparation of N-(2-carboxy-5-chloro-phenyl)glycine of the formula (1) (see fig. I) which comprises reacting 2,4-dichlorobenzoic acid of the formula (2) (see fig. II) with glycine and a base in water at a temperature of 50 to 200°C in the presence of copper and oxygen at a pH of 7 to 13.
Patent CA-2210108-A1 (CA)
Title: Optical disc apparatus accessing method and system therefor
Inventor: ONO KAZUHIKO
IPC: G11B7/09
Filed: 1997-07-09
Abstract: There are provided a plurality of information recording surfaces to be reproduced on one side of an optical disc to be reproduced, and when accessing control of an optical pickup over a plurality of recording layers is performed, first, a beam focal point of the optical pickup is moved using a moving means to the recording layer on which target information is recorded to thereby perform switching processing of information recording layers during reproduction, after which accessing control of the optical pickup is performed using control processing means similar to the access between the same recording layers, and with respect to the pausing operation, in a layer in which information is recorded from the inner circumference to the outer circumference, one track jumping is repeated toward the inner circumference, while in a layer in which information is recorded from the outer circumference to the inner circumference, one track jumping is repeated toward the outer circumference.
Patent CA-2211746-A1 (CA)
Inventor: VALLIERES NORMAND
IPC: F24F11/00
Filed: 1997-08-19
Abstract: Abstract Not Yet Available
Patent CA-2212390-A1 (CA)
Title: Sous-revetement de plancher et murs, isolant et insonorisant
IPC: B32B23/02
Filed: 1997-09-08
Abstract: Aux termes de la Loi nationale sur l'habitation et spécifiquement dans le domain e de la construction résidentielle, publique, commerciale et industrielle, le soucis d'a ider à l'amélioration de l'habitation et des conditions de vie au Canada, sur les aspec ts sociaux, économiques et techniques sont de rigueurs. Dans la présente invention, la compo sition de sous-revêtement des planchers et murs a été étudiée et mise au point pour rendre un lieu de travail, de vie plus agréable et dès plus économique. Chaque pièce comporte deux panneaux de gypse renforcés de fibres de cellulose de préférence laminés l'un à l'autre a vec un décalage de type "chiplap" conçu pour être utilisé comme sous-revêtement de sol ainsi que pour murs intérieurs et plafonds de constructions résidentielles, commerciales et industri elles, avec ou sans degré de resistance au feu, et sur la face inférieure, une couche de préfér ence laminée constituée d'un isolant à simple ou double rang de bulles d'air alvéolées, elles mêmes laminées en trois films de polyéthylène réfléchissante ou non, permettant une isolation s upplémentaire.
Patent CA-2212698-A1 (CA)
Inventor: KAHL PETER
IPC: D21F5/04
Filed: 1997-08-08
Abstract: Device for drying a web in a two-screen dryer section. The device may include a plurality of heatable dryer cylinders arranged in vertically spaced upper and lower cylinder rows, an upper endless screen associated with the upper cylinder row and a bottom endless screen associated with the bottom cylinder row, and a screen guide roll associated with one of the upper and lower endless screens. A shaft may be formed between adjacent cylinders in a cylinder row and bounded by one of the upper and lower endless screens guided around the adjacent cylinders and the screen guide roll. An air box and a blowing device may be positioned within the shaft, and the blowing device may be arranged in a region of separation between the screen and the screen guide roll to direct an air flow through the screen. The device may also include a longitudinal sealing strip coupled to a surface of the screen guide roll in a vicinity of the region of separation.
Patent CA-2212881-A1 (CA)
Inventor: MILLER RONALD A
IPC: A01F12/26
Filed: 1997-08-12
Abstract: A kit of components for assembling a concave for use with a combine or threshing machine includes a plurality of cross-bar members pre-drilled with a set of apertures along the centerline thereof to accept removable grid-defining subassemblies. The kit also includes side-plate members that can be bolted in place in the combine or threshing machine, each of which carries a brace member that receives the ends of the cross-bar members. Brackets and bolts are provided to secure each cross-bar member and associated grid-defining subassembly to an adjacent end brace member as well as to intermediate brace members so that any cross-bar member can be removed and replaced if necessary. Furthermore, any cross-bar member can be turned over to present another working edge to the rotor of the combine or threshing machine. It is seen that by utilizing the concave kit of this invention it is possible for a farmer to remove the entire concave from his harvesting equipment and to then repair or rebuild the concave on site, without having to either buy a new concave or spend considerable time and effort in using welding equipment to dismantle and rebuild a conventional concave. Additionally, if the harvesting equipment is to be used to harvest a different crop, one requiring a different grid size, it is possible to modify the concave of the present invention merely by replacing the original grid-defining subassemblies with ones having a different grid size.
Patent CA-2213045-A1 (CA)
Title: Nhrp packet authentication method and nhrp server
Inventor: IWATA ATSUSHI
IPC: H04L9/32
Filed: 1997-08-14
Abstract: An authentication method in an NHRP (Next Hop Resolution Protocol) for performing an address resolution for converting a network layer address in an NBMA   (Non-broadcast, Multi-access) network to a datalink layer address.  The method comprises steps of: providing an NHRP server for performing an address resolution which has a plurality of interfaces belonging to respective sub-networks, maintaining authentication keys and authentication types respectively allocated to the interfaces in the NHRP server; authenticating an NHRP packet received from one of the interfaces by using the authentication key allocated to the interface which receives the NHRP packet; and discarding the NHRP packet in case of authentication being unauthorized.  The method is capable of setting for each domain a mode for redirecting an NHRP (Next Hop Resolution Protocol) packet when authentication types between LIS (Logical IP Subnet, IP: Internet Protocol) are different and a mode for when an NHRP packet is redirected between domains.
Patent CA-2213996-A1 (CA)
Title: Oral pharmaceutical dosage forms comprising a proton pump inhibitor and an antacid agent or alginate
Inventor: DEPUI HELENE
IPC: A61K9/50
Filed: 1996-12-20
Abstract: An oral pharmaceutical dosage form comprising an acid susceptible proton pump inhibitor and one or more antacid agents or an alginate in a fixed formulation, wherein the proton pump inhibitor is protected by an enteric coating layer and an optional separating layer in between the proton pump inhibitor and the enteric coating. The fixed formulation is in the form of multilayered tablets, sachets or multiple unit tableted dosage forms. The multiple unit dosage form is most preferred. The new fixed formulation is especially useful in the treatment of disorders associated with dyspepsia such as heartburn.
Patent CA-2214870-A1 (CA)
Title: Variable-attenuation tunable optical router
Inventor: DUCK GARY S
IPC: G02B6/34
Filed: 1997-09-09
Abstract: A device for distributing an optical signal has an optical waveguide with a plurality of gratings disposed in series therein, the gratings having a predetermined reflectivity response within a specific wavelength range; an optical circulator having at least three ports, one of the ports serving as an input port for receiving the optical signal, and another port for removing at least a part of the optical signal reflected from one of the gratings; and, control means for individually controlling at least some of the gratings to effect a change of the wavelength range of the reflectivity response of the gratings.  The change may be a shift, an expansion or a compression of the range.  The device can function as a signal distributor (router), an equalizer or a demultiplexer.  The reflectivity response is preferably a sloped response.