baber/WOPTO huggingface dataset:
Patent CA-2272513-A1 (CA)
Title: Pilot symbols
Inventor: TEN BRINK STEPHAN
IPC: H04W72/04
Filed: 1999-05-21
Abstract: The invention includes a method of inserting pilot symbols into communication signals in which a plurality of signals to be transmitted are generated; each signal is divided into frames and each frame consists of a plurality of blocks. A pilot signal block is inserted into each frame of each signal before transmission. The pilot signal blocks are inserted in a time staggered fashion, spread though out the frame. The pilot symbols are time-staggered using an arbitrary algorithm for the pilot symbol insertion. This enables each receiver to perform more accurate, continuous channel estimation and results in a reduced Bit Error Rate (BER) and an improved Quality of Service (QoS). A receiver according to the invention makes use of pilot symbols of all other users in the system in order to improve its channel estimation for user k and this gives more reliable data detection.
Patent CA-2275214-A1 (CA)
Title: Process to electrolytically deposit copper layers
Inventor: SENGE GERD
IPC: C25D3/38
Filed: 1997-12-04
Abstract: A process for the electrolytic deposition of copper layers, in particular on printed circuit boards, has the following steps: an electroconductive substrate and anodes which are dissolved during electrolytic deposition are brought into contact with a deposition bath which contains copper ions, compounds which increase the electroconductivity of the deposition bath, additives for influencing the material properties of the copper layers, additional compounds of an electrochemically reversible redox system, and additives or mixtures of additives.  The substrate and the anodes are connected to a current supply and the copper layers are deposited on the substrate by a pulsed current or pulsed voltage process. This process allows metallic layers with good optical and mechanical properties to be deposited even after only a short stay in the bath.
Patent CA-2278853-A1 (CA)
Title: Improved cylinder lock system
Inventor: EDEN CHARLES W JR
IPC: E05B27/04
Filed: 1998-01-26
Abstract: A cylinder lock (10) is provided with a resiliently biased auxiliary locking pin (40) which projects into the keyway, the auxiliary locking pin having a first end which is shaped to define in part a flaring tenon (46), and a second end (52) which engages a locking recess (50) in the lock shell (18). The cooperating key (14) has a blade (24) with a longitudinal slot (60) shaped, in the manner of a mortise, to engage the first end of the auxiliary locking pin. The depth profile of the mortise increases from an initial tenon receiving depth at the blade tip, to a functional depth, at a point displaced from the blade tip. An aperture (68) may be provided in the base of the key blade slot for cooperation with the first end of the auxiliary locking pin to permit, at the fully inserted position of the key, relative motion between the tenon and mortise.
Patent CA-2279420-A1 (CA)
Title: Polarisation asymmetric active optical waveguide, method of its production, and its uses
Inventor: HUEBNER JOERG
IPC: G02B6/10
Filed: 1998-02-13
Abstract: A method of producing an active optical waveguide having asymmetric polarisation, said method comprising the steps of (a) providin g an active optical waveguide (10) comprising: (i) a transverse refractive index profile (21) comprising a guiding region (11), an intermediate region (13), and a non-guiding region (12); (ii) a transverse photorefractive dopant profile (31) comprising a constant or graded photorefractive dopant concentration within at least one of the guiding, non-guiding and intermediate regions, except that the photorefractive dopant is not located solely in the guiding region; and (iii) exhibiting in said guiding region, intermediate region, or both, light guiding modes having different polarisations; and (b) exposing at least a part (10a, 10b) of the active optical waveguide to an effective transverse illumination of light (20) reacting with the photorefractive dopant and modifying said transverse refractive index profile; said part of the active optical waveguide being exposed to a fluence selectively suppressing the propagation of the light guiding modes having different polarisations so that the propagation of one mode is less suppressed than the propagation of the other mode(s). Such an active optical waveguide, single polarisation mode optical waveguide lasers and multi-wavelength single polarisation mode optical waveguide lasers comprising such an active optical waveguide, methods of their production, and their uses in telecommunications, in spectroscopy, in sensors and in absolute calibrated laser light sources.
Patent CA-2280225-A1 (CA)
Title: Esters of polyalkyl or polyalkenyl n-hydroxyalkyl succinimdes and fuel compositions containing the same
Inventor: CHERPECK RICHARD E
IPC: C10L1/238
Filed: 1999-08-13
Abstract: Esters of polyalkyl or polyalkenyl N-hydroxyalkyl succinimides having the formula:    or a fuel soluble salt thereof; wherein R is a polyalkyl or polyalkenyl group having an average molecular weight in the range of about 450 to about 5,000; n is an integer from 2 to 5; and Z is a moiety selected from the group consisting of   wherein R1 is a hydroxy, nitro, cyano or -(CH2) x -NR3R4, wherein R3 and R4 are independently hydrogen or lower alkyl of 1 to 6 carbon atoms and x is 0 or 1;  and R2 is hydrogen, hydroxy, nitro, cyano or -(CH2) y -NR5R6, wherein R5 and R6 are independently hydrogen or lower alkyl of 1 to 6 carbon atoms and y is 0 or 1. The compounds of formula 1 are useful as fuel additives for the prevention and control of engine deposits.
Patent CA-2282335-A1 (CA)
Title: Method and device in a mobile telecommunications system
Inventor: CERWALL CARL PATRIK
IPC: H04W72/08
Filed: 1998-02-13
Abstract: The present invention relates to a method and an apparatus in a mobile telecommunications system for the re-establishment of a speech connection, especially one that risks being interrupted prematurely. A parameter (Q) indicating the quality of the traffic channel (TCH) on which the speech connection is implemented, is compared to a predetermined value (Q1). If the parameter (Q) is lower than said value (Q1) the speech connection (340) is parked temporarily on a dedicated control channel (DCCH) of high quality. When a traffic channel (TCH) again becomes idle (360) the speech connection is handed over (370) to this channel, which may either be associated with the base station originally serving the speech connection or another base station in the mobile telecommunications system.
Patent CA-2284053-A1 (CA)
Title: Method for control of the curl of paper in the dryer section of a paper machine and paper or board machine
Inventor: KAELLIONIEMI JAAKKO
IPC: D21G7/00
Filed: 1998-03-23
Abstract: A method in the dryer section of a paper or board machine for control of the curl of paper uses steam treatment and/or moistening of the paper web. The operations are carried out in a number of stages and/or the web temperature is lower than 85°C and/or when the dry solids content of the web is in the range of K1 to K2, wherein K1 = ultimate dry solids content -7% and K2 = ultimate dry solids content +3%. A paper or board machine, comprises at least a headbox, a former, a press, and a dryer section, in which steam boxes or moistening devices are employed for control of the curl. At least two of said curl regulation devices to achieve regulation of the curl in a number of stages, and/or fitted to operate in an area in which the web temperature is lower than 85°C and/or the dry solids content of the web is in a range of K1 to K2.
Patent CA-2284849-A1 (CA)
Title: Episomally replicating vector, its preparation and use
Inventor: BODE JUERGEN
IPC: A61K49/00
Filed: 1999-10-14
Abstract: The present invention relates to stably episomally replicating vectors, comprising at least one scaffold/matrix attached region (S/MAR) and at least one viral or eukaryotic origin of replication (ORI), cells comprising these, processes for their preparation, and their use, in particular as a medicament or diagnostic.
Patent CA-2287980-A1 (CA)
Inventor: ZHANG MINSHENG
IPC: C07D209/14
Filed: 1998-04-30
Abstract: La présente invention concerne l'utilisation de dérivés hétérocycliques représentés par la formule (I), en tant qu'inhibiteurs de thrombine, inhibiteurs de coagulation et agents de traitement des affections thromboemboliques. La présente invention concerne également de nouveaux composés représentés par la formule (I), des procédés et des intermédiaires pour leur préparation. La présente invention concerne, en outre, des formulations pharmaceutiques comprenant lesdits composés représentés par la formule (I).
Patent CA-2288838-A1 (CA)
Title: Damming device for erecting a liquid-damming protective bank
Inventor: MELIN SIGURD
IPC: E02D29/02
Filed: 1998-03-26
Abstract: A damming device for forming a liquid-damming protective bank comprises at least one first board (1), in the active state laying, intended to be urged by the liquid against the surface and thereby anchoring the device, as well as at least a second board (2), in the active state up-right, intended to dam the liquid. There are liquid-draining means (5) on the bottom side of the anchoring board (1). Devices (9, 9') act between the two boards (1, 2) with the purpose of inhibiting tilting of the damming board (2) from the active position in the direction towards the dry side, when liquid simultaneously affects the anchoring board (1) with a vertical force and the damming board (2) with a horizontal force.
Patent CA-2290215-A1 (CA)
Inventor: TUFANO ANTHONY
IPC: H01R4/24
Filed: 1999-11-19
Abstract: A quick wired lamp socket assembly which employs a pivoting actuator lever to cause the engagement between an electric cord inserted therein and assembly contacts and provides strain relief to such cord. The actuator lever has a partial top member, an edge of which defines an exposed edge with two conductor recesses and a tooth thereon. The recesses receive the conductors of the cord and the tooth engages the web between the two conductors. The cord is retained against the exposed edge by the circuitous path the cord follows through the lamp socket assembly.
Patent CA-2290750-A1 (CA)
Inventor: KREFT ANTHONY
IPC: A61P25/28
Filed: 1998-07-30
Abstract: L'invention concerne des composés se liant à VLA-4. Certains de ces composés inhibent également une adhésion de leucocytes et, notamment, une adhésion de leucocytes régulée par VLA-4. Ces composés s'utilisent pour le traitement d'affections inflammatoires chez un patient mammalien, par exemple un humain, l'affection consistant par exemple en asthme, maladie d'Alzheimer, athérosclérose, syndrome démentiel du SIDA, diabète, affection intestinale inflammatoire, polyarthrite rhumatoïde, transplantation de tissus, métastase tumorale et ischémie myocardique. Les composés peuvent également être administrés pour le traitement d'affections cérébrales inflammatoires telles que la sclérose en plaques.
Patent CA-2290971-A1 (CA)
Title: Agents for unsticking paint, and sedimentation agents
Inventor: NOWECK KLAUS
IPC: C09D7/00
Filed: 1998-05-26
Abstract: The invention relates to agents for unsticking paint, and/or sedimentation agents, containing amorphous alumina and/or alumina in pseudo-boehmite or boehmite form with a crystallite size of 0.1 to 15 nm and/or their hydrates and hydroxyalkyl polysaccharides.
Patent CA-2291652-A1 (CA)
Title: Tyre tread pattern and mould
Inventor: LAVIALLE GEORGES
IPC: B29C35/02
Filed: 1998-05-20
Abstract: A tread for a tire having, on at least one lateral part, and radially to the inside of the running surface of said tread, a plurality of cavities oriented virtually transversely and opening onto at least one of the edges of the tread, the cavities being intended to form grooves and incisions opening radially towards the outside of the tread after wear of between 15% and 45% of the thickness of the tread when new. Also, a mold adapted for the molding of such a tread pattern and including, on at least one part molding one of the sidewalls, elements in relief for molding cavities radially beneath the running surface of a tread when new.
Patent CA-2292875-A1 (CA)
Title: Sled shed
Inventor: CHAPMAN EDWIN BRENT
IPC: E04H6/00
Filed: 1999-12-20
Abstract: The shed for a snowmobile or ATV of the present invention includes a rectangular container having opposed rigid planar side walls of generally equal size in parallel spaced apart array, a rigid first end wall mounted to first ends of the side walls, and an opposite second end wall pivotally mounted to opposite second ends of the side walls so as to form a door for the container. A pair of opposed facing, substantially vertical, first arrays of apertures are formed in the side walls, adjacent the first ends of the side walls, one of the first arrays in each of the side walls. Similarly, a pair of opposed facing, substantially vertical, second arrays of apertures are formed in the side walls, adjacent the second ends of the side walls, one of the second arrays in each of the side walls.
Patent CA-2292918-A1 (CA)
Inventor: VOYER FABIEN
IPC: G06F9/46
Filed: 1999-12-17
Abstract: the interface system is provided within the agent for a group of managed objects.  The system provides telecommunications management and includes an agent (A) comprising an assembly of managed objects (MO1, MO2 ..). Each of the objects has provision to transmit and receive messages using the CMIP protocol, as well as being able to access CORBA client interfaces. Each may also be accessed by CORBA servers. All the CORBA interfaces are contained within the agent, within additional objects associated with the managed objects. The CORBA interface includes a device which is able to point the messages arriving from the CORBA server towards the managed objects concerned. Messages which are destined for a single manager are transmitted via a single representative object.
Patent CA-2293946-A1 (CA)
Title: Using paging or satellite paging to trigger remote devices
Inventor: KRAML MARK H
IPC: H04W84/02
Filed: 2000-01-05
Abstract: The existing paging infrastructure is used to send commands to operate remotely located electronic or mechanical devices. A paging message containing one or more preset commands, trigger signals, or command strings is received by a paging receiver into an optional signal buffer which provides the received message to a message compare function. The message compare matches each component of the message to a set of one or more allowed commands and sends at least one signal or command that causes the action specified by the received message contents to take place at the target device. The command may be a signal for triggering an electronic or mechanical action, or may be a command that causes an operation to be performed in a software-controlled component of the target device. An alternate embodiment allows responses generated by the system and/or the target device to be forwarded back to the initiator via a two-way paging transceiver. The target device either has the capability of generating one or more signals or other messages in response to the commands received, or the system has the capability of sensing the state of the target device after receipt of the commands.  Responses generated by the target device may be sent to the optional signal buffer or directly to the paging transceiver, or may be received and modified by a response generation function that is part of the system. Responses may be relayed either at the completion of the execution of all the received commands or after the execution of any of the commands in a multi-command sequence, providing feedback to the initiator as the command sequence is processed. The initiator may also receive an indication of the success or failure of the entire sequence of operations, or may receive data or other information produced or collected by the target device.
Patent CA-2295591-A1 (CA)
Title: Improvements in and relating to internal combustion engines
Inventor: RYNHART DEREK
IPC: F04B35/00
Filed: 1998-07-08
Abstract: An internal combustion engine (1) has a positive displacement supercharger (8) which can be used with particular advantage in an underpumping two stroke engine which is in the form of a valved diaphragm which reciprocates in a housing to deliver positive pulses of air. The internal combustion engine (1) also has an oiling system which comprises injecting oil between the piston (4) and cylinder walls (2) at discrete time intervals and any excess oil is removed through galleries in the piston (4), con rod (5) and main shaft (6) preferably by a vacuum exerted on the galleries. Various other innovative features include a two part exhaust valve (9), generation of the vacuum by a positive displacement supercharger, a two-part cylinder head (3), use of inserts on moving parts to increase the efficiency of an underpumping engine and a specially constructed flywheel (11).
Patent CA-2298566-A1 (CA)
Inventor: COHEN ERNEST SAMUEL
IPC: H04Q3/00
Filed: 1998-07-30
Abstract: An apparatus and method for completing a call between a telephone (100) and a telephone (110) in a telecommunications network supporting number portability.  A telephone network includes a plurality of switches (102, 108, and 112) connected by switched telecommunications network (106). The method and apparatus use a ported number list or a routing cache in a network switch or adjunct processor to avoid inefficiencies of QOR and N-1 call processing procedures. The invention includes an originating switch (102) as well as an adjunct processor for completing a call between the originating switch (102) and a destination switch (108), the originating switch (102) including structure for storing a ported number list or routing cache in database (104), structure for searching the ported number list or routing cache, and routing a call to the destination switch (108).
Patent CA-2298955-A1 (CA)
Title: Method of using a coloring composition in concrete based composition
Inventor: ZOUMUT HANI
IPC: C04B14/00
Filed: 1996-05-08
Abstract: A method of using a coloring composition in a concrete based composition comprises adding a coloring composition to a mixing container. The coloring composition comprises (i) about 80 to about 94 weight percent of an aqueous carrier; (ii) about 0.01 to about 15 weight percent of a pigment; (iii) about 0.5 to about 10 weight percent of a suspension enhancing agent; and (iv) about 0.5 to about 10 weight percent of a latex polymer solid. The method also comprises adding additional water to the mixing container; and adding cement to the mixing container.
Patent CA-2299792-A1 (CA)
Inventor: DEROME GEORGE F JR
IPC: G08G1/0965
Filed: 2000-02-28
Abstract: An emergency and non-emergency transmitter receivable by broadcast band receivers in nearby vehicles, comprising a first signal generator for simultaneously providing a plurality of selectively spaced carriers having frequency spacings corresponding to the individual channels of the band to be covered and selectively providing amplitude modulation when used for the AM broadcast band, and a second signal generator providing an FM modulated signal, which when combined with the signal from the first signal generator, covers various portions of the FM broadcast band to provide complete coverage thereof. A plurality of signals are generated in a portion of a selected band and modulated, according to the selected band mode, with a pre-stored and selectable voice alarm message. The portion of the band is changed to provide coverage of the entire broadcast band, the broadcast band is also changed, and/or the message is changed to provide effective emergency notification to vehicles and/or listeners within a half-mile radius of the emergency vehicle or public facility issuing the alarm transmission.
Patent CA-2300830-A1 (CA)
Inventor: LOXLEY ANDREW
IPC: G02F1/167
Filed: 1998-08-27
Abstract: Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. This fluid may be a mixture of two or more fluids or may be a single fluid. The displays may further comprise particles dispersed in a suspending fluid, wherein the particles contain a liquid. In either case, the suspending fluid may have a density or refractive index substantially matched to that of the particles dispersed therein. Finally, also disclosed herein are electro-osmotic displays. These displays comprise at least one capsule containing either a cellulosic or gel-like internal phase and a liquid phase, or containing two or more immiscible fluids. Application of electric fields to any of the electrophoretic displays described herein affects an optical property of the display.
Patent CA-2301749-A1 (CA)
Title: Cell searching in a cdma communications system
Inventor: NYSTROM JOHAN
IPC: H04J13/10
Filed: 1998-08-25
Abstract: A special coding scheme is disclosed for more effectively acquiring a long code and frame timing during a cell search in a CDMA communications system. A code set of length M Q-ary code words including symbols from a set of Q short codes is defined with certain properties. The primary property to be satisfied is that no cyclic shift of a code word yields a valid code word. The other properties to be satisfied are that there is a one-to-one mapping between a long code message and a valid code word, and a decoder should be able to find both the random shift (thereby implicitly finding the frame timing) and the transmitted code word (i.e., its associated long code indication message) in the presence of interference and noise, with some degree of accuracy and reasonable complexity.
Patent CA-2305613-A1 (CA)
Inventor: GORDON VIRGINIA C
IPC: B01L3/00
Filed: 1998-10-21
Abstract: Methods and apparatus (e.g., devices, systems, test kits) for conducting chemical analyses. Included are a) analytical systems (e.g., test kits which include apparatus, membrane(s) and reagent(s)) whereby membranes(s) are utilized to separate selected analyte(s) from other matter present in a complex matrix (e.g., a foodstuff, oil, pharmaceutical/cosmetic preparation, biological fluid, etc.); b) analytical apparatus (e.g., sample processing apparatus and other hardware components in combination with membrane(s)) useable to qualitatively or quantitatively determine one or more analytes in a complex matrix; c) analytical methods for qualitatively or quantitatively determining one or more analytes in a complex matrix; and, d) novel chemical tests for qualitative and/or quantitative determination of certain analytes.
Patent CA-2305874-A1 (CA)
Title: Device and method for multiplexing physical channel in cdma communication system
Inventor: CHANG HOON
IPC: H04J13/00
Filed: 1999-08-17
Abstract: Multiplexing device and method in a mobile communication system. Multiplexing is implemented in two stages to allow a logical channel to be shared, the type of a multiplex unit is defined, and the defined multiplex unit type is determined depending on the type of a physical channel, so that the same kind of physical channels employ the same type of multiplex units.
Patent CA-2306152-A1 (CA)
Title: Medical unit water line sterilization system
Inventor: OLK M JOSEPH
IPC: C02F1/02
Filed: 2000-04-14
Abstract: A dental water sterilization unit having a heat treater which raises the temperature of domestic water supply to the sterilization unit sufficiently to sterilize and deoxygenate the water and then cools the water to a suitable temperature for comfort of the dental patient. The unit may have a water chiller or heat exchanger to lower the temperature. The unit may also have a porous packing in the heat treater to enter mixed steam and water to facilitate the sterilization and deoxygenation process.