baber/WOPTO huggingface dataset:
Patent CA-2235295-A1 (CA)
Title: Reversible thermochromic compositions
Inventor: FUJITA KATSUYUKI
IPC: B41M5/30
Filed: 1998-04-20
Abstract: A reversible thermochromic composition comprising as essential components (a) an electron-donating color-developing organic compound, (b) at least one electron-accepting compound selected from alkoxyphenol compounds represented by Formula I:                            (see fig. I) wherein R represents an alkyl group; and (c) a compound serving as a reaction medium capable of reversibly causing electron-donating/accepting reaction attributable to the components (a) and (b).       This composition has a reversible metachromatic function that it presents a color-developed state when heated in a color-extinguished state and presents the color-extinguished state when temperature-dropped or cooled in the color-developed state, or that it begins to develop a color in the course of temperature drop after heating, having been triggered by its temperature rise when heated in a color-extinguished state, and returns to the color-extinguished state after it has presented a color-developed state in a maximum developed-color density.
Patent CA-2235402-A1 (CA)
Title: Compositions and methods for buccal delivery of pharmaceutical agents
Inventor: GUTNIAK MARK K
IPC: A61K38/095
Filed: 1996-10-22
Abstract: A composition for transmucosally administering a drug to the oral cavity comprises an adhesive layer comprising a hydrophilic polymer having one surface adapted to contact a first tissue of the oral cavity and adhere thereto when wet and an opposing surface in contact with and adhering to an adjacent drug-containing layer comprising an effective amount of a drug and optionally an effective amount of a permeation enhancer, wherein the drugcontaining layer is adapted to contact and be in drug transfer relationship with a mucosal tissue of the oral cavity when the adhesive layer contacts and adheres to the first tissue. Preferred drugs include peptides, such as glucagon-like insulinotropic peptides. A method of transmucosally administering a drug to the oral cavity is also disclosed.
Patent CA-2235550-A1 (CA)
Inventor: HILL ALAN M
IPC: B31B50/16
Filed: 1996-09-25
Abstract: A box blank forming apparatus includes at least one printing assembly (12, 14), a slotting assembly (18), and a feeding (24) and conveying (28) mechanism for feeding blanks (26) through the apparatus. The feeding (24) and conveying (28) mechanism brings the blanks (26) into contact with the printing cylinder (44) and the slotter blade (96) to complete printing and slotting operations on the blanks (26) in the formation of boxes. An interrupter (52) is provided in association with the printing assembly (12, 14) for removing the blanks (26) from contact with the printing cylinder (44), and similar structure can also be provided with the slotting assembly (18) for removing the blanks (26) from contact with the slotter blade (96). A controller (120) is provided for controlling operation of the interrupter (52) of the printing assembly (12, 14) and may be used to also actuate the interrupter structure (106) of the slotter wheel assembly (18). This allows the printing assembly (12, 14) and the slotter wheel assembly (18) to accomodate box blanks of variable length.
Patent CA-2237146-A1 (CA)
Inventor: RIFFAT SAFFA BASHIR
IPC: F28C3/08
Filed: 1996-11-05
Abstract: Heat transfer apparatus comprises a refrigeration assembly having a low pressure region and a high pressure region. The apparatus may also include a power generation assembly connected to the refrigeration assembly between the low and high pressure regions. The refrigeration assembly and the power generation assembly are so arranged that refrigerant in the high pressure region can be passed through the power generation assembly to the low pressure region of the refrigeration assembly. Power may be generated by the power generation assembly on passage therethrough of the refrigerant. The apparatus may also include an absorption region comprising a piston and cylinder, ejector cycles in combination with absorption cycles, fibre heat exchanges, vortex tubes, and one embodiment comprises a lamp or a torch.
Patent CA-2239736-A1 (CA)
Inventor: WINTERS KIMBERLY
IPC: F02M35/14
Filed: 1998-06-05
Abstract: For use with a vehicle, a combination unit includes a fluid storage chamber for storing fluids such as windshield washer fluid and an acoustic resonance chamber for attenuating vehicle air intake noises. The fluid storage container and the acoustic resonance chamber are hingedly attached and define there between an airflow cavity for housing the vehicle air filter with suitable ducting to direct ambient air through the filter and into the engine intake system.
Patent CA-2242570-A1 (CA)
Inventor: REISS ROBERT
IPC: A61M25/00
Filed: 1997-11-18
Abstract: This invention is a guidewire (10) comprising an elongated core element (12) manufactured from a martensitic alloy that is heat-treated to render a fully hardened core throughout its cross sectional area. The core element (12) has a constant taper or step-down decreasing cross-sectional area in a direction towards the distal end (24) which is fully hardened throughout its longitudinal length. A single coil, or two coils (32, 36) are carried by and secured to said core element (12) near the distal end (24).
Patent CA-2243937-A1 (CA)
Title: Hilling spade
Inventor: GAGNON GERALD
IPC: A01B13/02
Filed: 1998-07-28
Abstract: A hilling spade according to the present invention has a pair of moldboards or wings defining a plowing angle having a pointed forward end. Each wing has a central planar surface, a cutting edge, and a lower curved surface between the cutting edge and the central planar surface. The lower curved surface has a curvature oriented vertically inwardly relative to the plowing angle. Each wing also has an upper curved surface having a curvature oriented vertically outwardly relative to the plowing angle. When the hilling spade is used for hilling ridges along rows of plants, the lower curved surfaces are usable for lapping lower portions of the ridges for compacting the lower portions and for reducing erosion of these ridges. The upper curved surfaces are usable for pushing soil over the ridges and under the foliage of the plants on those ridges without damaging the foliage.
Patent CA-2244570-A1 (CA)
Title: Implementing minet on layers 1 and 2 of the isdn protocol stack
Inventor: PERRY DAVID
IPC: H04L29/02
Filed: 1998-08-07
Abstract: A communication control system comprising a switching system peripheral controller, plural high level data link controllers (HDLCs) communicating with the peripheral controller, plural basic rate interface (BRI) line cards each communicating with a respective HDLC, at least one proprietary peripheral connected to a first BRI line card, at least one integrated services digital network (ISDN) peripheral connected to a second BRI line card, and communication channels between the peripherals and the BRI line cards, comprising data channels carrying data conforming to (i) a physical layer, (ii) a second layer conforming to an operating system interface (OSI) layer 2 ISDN standard protocol, and (iii) which selectably conforms to a layer 3 ISDN standard protocol for operating an ISDN peripheral and a proprietary protocol for operating a proprietary peripheral.
Patent CA-2247206-A1 (CA)
Title: External preparation for curing lesioned tissues
Inventor: OKU KINUKO
IPC: A61K9/00
Filed: 1997-02-20
Abstract: An external preparation efficacious in curing lesioned tissues of particularly the rectum or anus. The preparation comprises an active ingredient of tannic acid and aluminum potassium sulfate and a base ingredient and examples of the applicable dosage forms include ointments, creams and suppositories.
Patent CA-2251615-A1 (CA)
Title: System and method for distributing calls to customer service operators
Inventor: GOTTLIEB LOUIS G
IPC: H04M3/42
Filed: 1997-04-15
Abstract: System and method for distributing calls to customer service operators (124, 126), particularly home operators (126). The present invention provides a telecommunications service provider's network with intelligence to monitor the current status and availability of home operators (126), and to determine the appropriate rout ing of a customer service call. By enabling the network to monitor operator availability status, only a single telephone line to a home operator (126) is required, and notification of availability to answer calls is not required to be performed by the home operator (126).
Patent CA-2253567-A1 (CA)
Title: Arrangement and method for producing expanded material
Inventor: STELZL THOMAS
IPC: B26F3/16
Filed: 1996-05-29
Abstract: In an arrangement for producing expanded material (8), in particular from foil-type webs (2) of metal, with a cutting device (3) for producing coherent strips of webs (5) of foil, and with an expanding device (6 for expanding the web (5), the cutting device (3) comprises laser beam, water jet or electron beam (4)-emitting devices which are arranged substantially adjacent each other, transversely to the moving direction of the web (2), and which are controlled by a controlling device.
Patent CA-2254167-A1 (CA)
Inventor: OLIFF JAMES R
IPC: B65D71/44
Filed: 1998-11-20
Abstract: A reinforced handle (H) having a predetermined notched profile configuration (10) is formed from outer handle panels (30,  32)  folded about a first line of symmetry  (31)  and reinforcing panels  (20, 22)  folded about a second line of symmetry (21), the outer handle panels having a first aperture (34, 36, 38) of a first predetermined configuration which is substantially symmetrical about said first line of symmetry and the reinforcement panels having a second aperture (24, 26, 28) of a second predetermined configuration corresponding to the   first  predetermined  configuration  and  which  is substantially symmetrical about the second line of symmetry such that a notched profile (10) defined by the first aperture and the second aperture and which minimizes visibility of inner surfaces of the outer handle panel and reinforcement panel is exhibited.
Patent CA-2255311-A1 (CA)
Title: Method and apparatus for real-time billing account query
Inventor: SON-HING LESTER
IPC: H04M15/28
Filed: 1998-12-09
Abstract: A telecommunications service billing administrator for providing real-time billing query functionality. The billing administrator has a billing system with a processor coupled to a billing information data repository. The billing information data repository updates an account table and a call table during the placement of a telecommunications call leg. The information updated includes a billing account summary. The subscriber can issue a billing inquiry request in which the billing system responds with an announcement of the billing account summary.
Patent CA-2258861-A1 (CA)
Title: Wood coating film
Inventor: KUNZE PETER EDUARD
IPC: C08J5/18
Filed: 1997-06-13
Abstract: The present invention relates to a film consisting of at least two layers, especially for coating timber, which contains (1) at least one polyurethane film with a hardness between 70 shore A and 80 shore D, preferably 80 shore A to 74 shore D, and especially 45 to 74 shore D, and (2) at least one layer of UV radiation curable lacquer applied thereto.
Patent CA-2260866-A1 (CA)
Inventor: HOEK ANNETTE CATHERINA
IPC: A23L27/30
Filed: 1997-07-14
Abstract: The invention relates to stable, liquid suspensions containing a dipeptide sweetener in water as well as an agent which keeps the suspension liquid, the dipeptide sweetener being a sweetening salt of an aspartic acid-based dipeptide sweetener and a derivative of a sweetening acid, and the agent used to keep the suspension liquid a component chosen from the group of water-soluble, modified or non-modified polysaccharides or proteins, lipids, sulphonates and phosph(on)ates with surfactant properties at a pH of 3.5 or lower. The invention also relates to a process for the preparation of such suspensions, the sweetening salt, prepared in situ or otherwise, and the other component being mixed thoroughly and intensively.
Patent CA-2261939-A1 (CA)
Inventor: NORTON JACK
IPC: G11B27/031
Filed: 1997-05-30
Abstract: L'invention concerne un dispositif et un procédé fournissant une série d'images en couleur, y compris un ensemble optique (12) de réception vidéo (19). Cet ensemble (12) transmet l'image vidéo (19) à un premier capteur (22) et un second capteur (24). Le premier (22) est un capteur numérique monochrome à haute résolution, et le second (24) est un capteur numérique couleur de résolution inférieure. Ces deux capteurs produisent une succession d'images au même débit. Les images successives sont codées au moyen d'un numéro et d'un code temporel. Les images successives issues des deux capteurs sont mises en mémoire dans un tampon d'images (38). L'image en couleur peut être travaillée au montage par un opérateur, qui utilise une machine de montage (14) pour obtenir une série d'images monochromes, automatiquement montées selon l'ordre de montage des images couleur correspondant aux numéros d'image et aux codes temporels. On peut transférer le contenu du tampon d'images (38) à une mémoire de masse (50), et aussi à un processeur de rendu des couleurs (44) pour obtenir une image composite à partir des images monochrome et des images couleur.
Patent CA-2262573-A1 (CA)
Title: Electronic anti-theft element
Inventor: ALTWASSER RICHARD
IPC: G08B13/24
Filed: 1997-07-29
Abstract: An electronic anti-theft element consists of at least one spiral printed circuit (2; 3), a capacitor and a dielectric layer (4) arranged therebetween, or of two spiral printed circuits (2, 3) which are arranged on both sides of a dielectric layer (4) in an at least partially overlapping manner (forming resonant circuit (6)). The object of the invention is to provide a resonant circuit (6) which is less liable to be reactivated. For that purpose, in at least one selected area (8) (a rated break point) of the dielectric layer a short-circuit is created between the opposite capacitor plates or spiral printed circuits (2, 3) when a sufficiently high energy is supplied by a magnetic alternating field. The selected area (8) is locally reinforced, preventing the suppression of the short-circuit by mechanical stress and the reactivation of the anti-theft element (6).
Patent CA-2266457-A1 (CA)
Title: System and method for search and retrieval of digital information
Inventor: BLUMENTHAL JOSHUA O
IPC: G06F17/30
Filed: 1997-09-24
Abstract: The invention comprises a visual search and retrieval system and method. At least one viewing window is provided on a screen. The viewing window has a first and second pane. The first pane provides a global view of digitally stored information and the second pane provides a local view of the digitally stored information. The first pane has first indicia which indicate results of a search performed by a user and the second pane has a second indicia which also indicate the results of the search performed by the user. The second indicia correspond substantially to the first indicia.
Patent CA-2267679-A1 (CA)
Title: Ntsc co-channel interference detectors responsive to received q-channel signals in digital tv signal receivers
Inventor: LIMBERG ALLEN LEROY
IPC: H04N5/44
Filed: 1997-10-02
Abstract: An NTSC co-channel interference detector detects the presence of an interfering NTSC signal in the received Q-channel signal that is orthogonal to the received I-channel signal, rather than detecting the presence of an interfering NTSC  signal in the received T-channel signal. By determining whether or not a significant amount of NTSC co-channel interference accompanies the received Q-channel signal, it is inferentially determined whether or not a significant amount of NTSC co-channel interference accompanies the received I-channel signal, such as to cause too many errors in the trellis decoding of equalized received I-channel signal to be corrected by the Reed-Solomon decoder following the trellis decoder. The accurate determination of co-channel NTSC interference levels is simplified, because essentially no direct bias arises from the quadrature-phase synchronous detection of the pilot carrier of the VSB AM digital television signal.
Patent CA-2269704-A1 (CA)
Title: Method for propagation delay control
Inventor: JUNG STEFAN WILHELM
IPC: H04W92/06
Filed: 1997-10-31
Abstract: A method for maintaining synchronization between a base transceiver station (BTS) (30) and an interworking function (IWF) (40) within a cellular communications network (45) is disclosed. The method utilizes a synchronization procedure between the IWF (40) and the BTS (30) that makes the IWF (40) aware of propagation delays (36) between the IWF (40) and BTS (30).  The IWF (40) utilizes this information to adapt to the delays (30) such that the correct sequence is unpacked uplink when obtained from the base transceiver station (30). The IWF (40) also uses synchronization data to control transmissions from the IWF (40) to the BTS (30) such that frame numbers and timeslots (20) are received at the BTS (30) in the correct sequence.
Patent CA-2273177-A1 (CA)
Inventor: HUMAN JAN PETRUS
IPC: B29C45/46
Filed: 1997-09-05
Abstract: Appareil de moulage qui comporte un élément de transfert (12) doté d'une cavité de retenue (14) destinée à recevoir une charge de matière à mouler. La matière à moulée sous forme particulaire ou fondue est introduite dans un passage chauffé (30) par une spirale d'alimentation (40) située dans un tube (36). Un piston (42) déplace la matière à mouler fondue le long du passage (30) et la fait pénétrer dans la cavité de retenue (14). L'élément de transfert (12) est ensuite déplacé jusqu'à une position dans laquelle la cavité de retenue (14) est alignée avec une ouverture (18) ménagée dans une plaque arrière (16). L'ouverture (18) est en communication avec une cavité (20) de moule ayant la forme de l'article à produire. Un second piston (46) déplace la charge de matière à mouler de la cavité de retenue (14) dans l'ouverture (18) et la fait pénétrer dans la cavité de moule.
Patent CA-2277396-A1 (CA)
Title: Method for full penetration electron beam weld for downhole tools
Inventor: RATCLIFF JOHN C
IPC: B23K15/04
Filed: 1999-07-15
Abstract: Downhole oilfield tools often consist of complicated "blocks" that are small in diameter (typically 1 11/16-inch to 4 3/4-inch) and long (typically 2 to 10 feet). The invention describes a novel method of designing and manufacturing the "blocks" which significantly reduces the machining and manufacturing complexity of the part. After designing the "blocks" and machining them by conventional "easy access" metal-removal methods, the new manufacturing process disclosed herein uses a full penetration electron beam weld to join two "blocks" together to create a final piece that previously would have been made from a single monolithic piece requiring extremely difficult machining processes. A preferred embodiment utilizes a variable penetration welding procedure, i.e., a weld that varies the intensity of the electron beam as it is directed around the "blocks" to be welded together.
Patent CA-2283483-A1 (CA)
Title: Wound dressing gel
Inventor: TAKTAK YOUSEF SAMIH
IPC: A61L15/60
Filed: 1998-03-05
Abstract: A gel for use in dressing a wound and a process for the manufacture of a gel are disclosed. The gel comprises a monovalent salt of a polygalacturonic acid derivative (such as sodium pectate), a carboxy-polysaccharide (such as a monovalent salt of a carboxycellulose derivative or a monovalent salt of an alginic acid derivative) and multivalent ions providing ionic cross-links between the monovalent salt and the carboxy-polysaccharide.
Patent CA-2284968-A1 (CA)
Inventor: SUGITA NARUTOSHI
IPC: H01M8/02
Filed: 1999-09-29
Abstract: A first gas diffusion layer for constructing an anode electrode and a second gas diffusion layer for constructing a cathode electrode are provided with first and second gas flow passages which are formed opposingly to first and second flow passages provided on first and second separators respectively. A fuel gas is supplied to the first flow passage and the first gas flow passage, while an oxygen-containing gas is supplied to the second flow passage and the second gas flow passage. Accordingly, the fuel gas and the oxygen-containing gas are uniformly diffused and supplied to first and second electrode catalyst layers respectively.
Patent CA-2285569-A1 (CA)
Title: Elastomer-modified bituminous compositions
Inventor: LIANG ZHI-ZHONG
IPC: C08L21/00
Filed: 1998-04-03
Abstract: Polymer modified bituminous compositions which are stable against phase separation are provided at greater levels of incorporation of elastomeric polymer having a conjugated diene structure, such as styrenebutadiene rubbers, and/or cross-linking agent, specifically sulfur, by incremental addition of elastomeric polymer and/or cross-linking agent into the bitumen at elevated temperatures of about 150.degree. to about 220 .degree.C.
Patent CA-2289992-A1 (CA)
Title: Reduction of aromatic halogenides
Inventor: JORDIS ULRICH
IPC: C07D491/20
Filed: 1998-04-30
Abstract: The invention relates to the reduction of (hetero)aromatic halogenides of general formula (I) Ar-Xn to compounds of general formula (II) Ar-Hn. To achieve this, a reduction agent is used, in particular a hydride reactant such as lithium aluminium hydride (LiAlH4) in the presence of oxygen, in particular in the form of an oxygen-inert gas mixture. Reduction in the presence of oxygen gives a good yield in short reaction times, even when working on a semi-industrial or industrial basis. Reduction using LiAlH4 in the presence of oxygen can also be used to reduce complicated heteroaromatic halogenides, for instance for reducing bromonarwedine ketone acetal to narwedine ketone acetal on an industrial scale.
Patent CA-2292973-A1 (CA)
Title: Pressure activated piston and cylinder unit for use in a die
Inventor: MACMILLAN DAVID R
IPC: B21D28/28
Filed: 1999-12-21
Abstract: A pressure activated piston and cylinder unit for use with a die block is taught which provides installation and service portions at the rear face of the unit. Also provided is a pressure activated piston and cylinder unit for use with a die block, of simplified construction.
Patent CA-2297842-A1 (CA)
Title: Integrally asymmetrical polyolefin membrane for gas transfer
Inventor: LANG ARMIN JOHANNES
IPC: G01N27/40
Filed: 1998-07-16
Abstract: Process for producing hydrophobic polyolefinic membranes for gas exchange via thermally induced liquid-liquid phase separation.    A solution of at least one polyolefin in a solvent system with a viscosity less than 60 mPa s, consisting of a compound A  and a compound B, is extruded to form a shaped object. The compound A is a solvent and compound B preferably a non-solvent of the polymer, and the boiling point of compound A is at least 50°C higher than that of compound B. After the shaped object leaves the die, at least one surface thereof is subjected to an atmosphere promoting evaporation of compound B, and the shaped object is subsequently cooled until the phase separation and solidification of the high-polymer-content phase take place.  The integrally asymmetrical membrane producible in this manner has a porosity of greater than 50% to 75% by volume, a sponge-like, open-pored, microporous support layer without macrovoids and on average isotropic pores, and at least one separation layer with pores <100 nm, if any. The membrane is preferably used for blood oxygenation.