baber/WOPTO huggingface dataset:
Patent CA-2114124-A1 (CA)
Title: Single step amplification and sequencing of nucleic acids
Inventor: GREGG KEITH
IPC: C12Q1/6869
Filed: 1992-07-23
Abstract: Method for the amplification and sequencing of DNA or RNA. The method comprises the steps of (i) melting a double stranded nucleic acid to yield a pair of complementary nucleic acid strands, (ii) hybridising a primer to each of the strands, the primers being so chosen that the primer annealing to the sense strand is 3' to the position of the primer on the antisense strand, one of the primers being labelled so as to be capable of being visualized independently of the other primer, (iii) causing a polymerase enzyme to amplify the nucleic acid in the presence of a dideoxynucleotide analogue of one of the nucleotides present in the nucleic acid, the dideoxy analogue being present in such a concentration that a majority of the newly synthesised nucleic acid strands are terminated by incorporation of dideoxynucleotides without extending far enough to act as templates for synthesis of the opposite strand using the second primer, (iv) repeating steps (i) to (iii) sequentially a number of times, (v) repeating the steps (i) to (iv) using at least another two dideoxynucleotide analogues of the other three nucleotides present in the nucleic acid, and (vi) electrophoretically separating the reaction products of each of the repetitions of steps (i) to (iv) and visualizing the labelled strands.  The other of the nucleotides of at least a part of the strand of the nucleic acid to which the labelled primer annealed between the binding sites may be determined by comparing the separated and visualized gels for each of the nucleotide analogues used.
Patent CA-2116040-A1 (CA)
Inventor: LUEBKE ROGER D
IPC: B66F9/07
Filed: 1994-02-21
Abstract: A floor-running stacker crane comprising a non-linear floor rail, a non-linear overhead rail, a base supported for movement along the floor rail, a turntable, a rotate bearing supporting the turntable on the base for rotation of the turntable relative to the base about a generally vertical axis, a rotate drive for rotating the turntable relative to the base,  a mast having a lower end fixed to the turntable such that the mast rotates with the turntable relative to the base, the mast also having an upper end supported for movement along the overhead rail, a carriage moveable vertically relative to the mast, a hoist assembly for moving the carriage vertically relative to the mast, a load engaging mechanism, a rotate bearing supporting the load engaging mechanism on the carriage for rotation relative to the carriage about a generally horizontal axis, and a tilt drive for rotating the load engaging mechanism relative to the carriage.
Patent CA-2118795-A1 (CA)
Title: Pyranones
Inventor: CROSBY JOHN
IPC: C07F7/18
Filed: 1992-09-11
Abstract: A process for the separation of at least one isomer from a mixture of isomers of a tetrahydropyran-2-one, having at least two chiral centres which comprises selective reaction of at least one isomer with a reagent catalysed by a hydrolase enzyme whereby at least one isomer is preferentially converted into a distinct chemical species from the other isomers so that it is susceptible of separation by an appropriate chemical or physical separation process in which the tetrahydropyran-2-one is of formula (1) wherein Z  is -H or a protecting group susceptible of reaction with the reagent under the influence of the enzyme; and Y is formyl or protected formyl.
Patent CA-2124802-A1 (CA)
Inventor: MUENDLEIN WERNER
IPC: B23B27/00
Filed: 1992-11-24
Abstract: A LATHE TOOL                 ABSTRACT OF THE DISCLOSURE    The invention concerns a lathe tool having a cylindrical shaft (10) and a head (18) with a contact surface (28) which rests against a support surface (26) on the shaft (10).  The tool head (18) is detachably connected in force-locking fashion by means of a fitted screw (16) to the tool shaft (10).  The contact surface (28) and the support surface (26) are disposed at an acute angle to the axis of the shaft and have mutually engaging straight tooth systems (30, 32) which extends over the whole cross-section of the shaft.  The parallel teeth of the tooth system (30) are perpendicular to the direction of slope of the support and contact surfaces (26, 28) and parallel to a surface (38) disposed with its axis parallel to that of the tool head (18) and including an indexable cutting insert (36).
Patent CA-2126081-A1 (CA)
Title: Method and system for transferring a flowable material from a transport-container to a receiver
Inventor: LARSEN BJORN ERIK HAABEGAARD
IPC: B65B69/00
Filed: 1992-12-17
Abstract: A method and system for transferring a flowable material from a container (10) to a receiver (11) through a flexible tubing (13) which communicates with an opening defined in the container and which extends outwardly from the container. The method involves establishing within the container, after discharge of the material therefrom, a pressure less than the ambient pressure so as to draw the tubing into the container through the opening as a result of the pressure differential created between that within the container and the ambient pressure.
Patent CA-2128036-A1 (CA)
Title: Ignition system using multiple gated switches with variable discharge energy levels and rates
Inventor: BONAVIA HOWARD V
IPC: F02P7/03
Filed: 1994-07-14
Abstract: An ignition system for a gas turbine engine includes a plurality of igniters, an energy storage capacitance, a charging circuit for charging the capacitance, a plurality of gated switches, with at least one switch connected between each igniter and the capacitance, and control means for discharging respective amounts of energy from the capacitance to each respective igniter at respective spark rates.
Patent CA-2129150-A1 (CA)
Inventor: ONO TAKEO
IPC: H01J9/02
Filed: 1994-07-29
Abstract: An electron-emitting device (1) comprises a pair of oppositely disposed electrodes (5,6) and an electroconductive film (4) inclusive of an electron-emitting region (3) arranged between the electrodes. The electric resistance of the electroconductive film (4) is reduced after forming the electron-emitting region (3) in the course of manufacturing the electron-emitting device (1). <MATH>
Patent CA-2132785-A1 (CA)
Title: Prop headboard
Inventor: PIENAAR FRANS R P
IPC: E21D15/55
Filed: 1994-09-23
Abstract: ABSTRACT            The prop headboard is used to support an inflatable grout bag on the head of an elongate prop. The headboard has a timber frame which presents a planar support surface suitable for supporting the inflatable grout bag. Bag-retaining flaps made of flexible fabric material extend from opposite edges of the headboard. These flaps are folded over the grout bag and serve to centralise it on the headboard and to restrain it from rolling out sideways during inflation and thereafter. The invention also concerns a prop system in which the headboard is used, and a method of supporting a hanging wall in a mine working.
Patent CA-2134067-A1 (CA)
Title: Adenosine derivatives having a2 agonist activity
Inventor: CRISTALLI GLORIA
IPC: A61P9/00
Filed: 1993-04-21
Abstract: Adenosine derivatives having A2 agonist activity of formula (I), a process for the preparation thereof and pharmaceutical compositions containing them. The compounds of the invention are useful for the treatment of cardiovascular pathologies and nervous system diseases.
Patent CA-2134562-A1 (CA)
Title: Dosage inhalator with indicating/interrupting means
Inventor: TROFAST EVA ANN-CHRISTIN
IPC: A61M/
Filed: 1993-05-04
Abstract: The invention relates to a dosage inhalator for dispensing to a patient a pharmacologically active compound or substance suspended in a fluid comprising a nozzle (2), a conduit (3) connected to said nozzle, a storage means (4) adjacent said conduit (3) containing multiple doses of said active compound to be dispensed, a carrying means (5) having portions (6) for carrying prede-termined and reproducible unit doses of said active compound, said carrying means being mounted for movement between said conduit (3) and said storage means (4) to position one of said portions (6) in said conduit (3) whereby said unit dose of said active compound located at said portion (6) can be dispensed into the conduit, said carrying means being actuated by means of a man-euvering means (10,110). The inhalator further comprises means (20) for disrupting the movement of said maneuvering means (10,110) directly or indirectly upon exhaustion of said active compound in said storage means (4). In an alternative embodiment the inhalator comprises means for indicating either the number of doses remaining in said storage means or the number of doses used, said indicating means comprising a screw and nut mechanism being rotated by said intermittent movement of said carrying means, the relative movement between the screw (16) and the nut (17) in said mechanism being caused by said rotation being used for actuating said indicating means.
Patent CA-2136978-A1 (CA)
Title: Imaging system and device having a simplified electrode design
Inventor: POTTS JOHN E
IPC: H01L27/146
Filed: 1993-06-14
Abstract: A simplified layered imaging stack capable of bearing a latent photostatic image comprising only a single segmented electrode on one side of the stack, rather than plate electrodes on each side of the stack. Appropriate sizing of the segmented electrodes enables individual electrodes to serve at different times as either the ground reference formerly provided by the electrode on the other side of the stack, or the collector of charge carriers representing the latent photostatic image. The imaging stack may be used with a variety of types of imaging systems, and in flat or cylindrical configurations.
Patent CA-2138424-A1 (CA)
Title: Polypropylene films suitable for packaging
Inventor: BURGIN EMANUELE
IPC: C08K3/00
Filed: 1994-12-19
Abstract: Disclosed are polyolefin films suitable for packaging having Elmendorf  values  lower than  0.8N  in both machine direction and cross direction are obtained from compositions comprising (percentages by weight):     A)   from 70% to 90% of a polyolefin matrix containing not less  than  30%  of  one  or more  crystalline  propylene homopolymers and/or copolymers having a flexural modulus greater than or equal to 1800 MPa;     B)   from 10% to 30% of one or more mineral fillers.
Patent CA-2138653-A1 (CA)
Title: A nozzle
Inventor: EADES ANDREW
IPC: B01F3/04
Filed: 1993-05-25
Abstract: The invention relates to apparatus (1) for distributing a gas in a liquid, particularly for "floating" particulate matter from raw or flocculated sewage, comprising an inlet (2) for a gas entrained in a liquid carrier such as recycled sewage, a sinuous part (16, 18) of a flow path (3) through the apparatus, and a downstream outlet (4, 11) of substantially uniform cross section adapted to allow gas to be released from the liquid carrier and to be dispersed laterally of the flow path (3).
Patent CA-2139746-A1 (CA)
Title: A digital frequency conversion and tuning scheme for microwave radio receivers and transmitters
Inventor: CHALMERS HARVEY
IPC: H04B1/30
Filed: 1994-05-06
Abstract: A digital frequency upconversion and downconversion scheme for receivers and transmitters enables high resolution downconversion and upconversion, respectively, with low phase noise. A digital signal processor (DSP) (230) receives temperature measurement information from a temperature transducer associated with a reference oscillator (240), and also receives channel tuning and other information. The DSP adjusts the signal samples accordingly, without adjusting the operation of the oscillator. Additionally, the inventive filtering scheme, preferably implemented in an application specific integrated circuit (ASIC), receives digital filtering coefficient information, digital symbol timing phase control signals, and, in some cases, other information from the DSP. As a result, the scheme enables operation at 1 Hz resolution, with phase noise which is at least 33.5 dB down at 10 Hz in the case of downconversion, and at least 42 dB down at 10 Hz in the case of upconversion.
Patent CA-2139793-A1 (CA)
Inventor: YOUNG ROM D
IPC: C04B7/44
Filed: 1995-01-09
Abstract: A process and apparatus by which steel slag can be added to the feedstock materials fed into the feed-end of a rotary cement kiln to form cement clinkers. The steel slag is crushed and screened to provide steel slag particles having a maximum diameter of 2".
Patent CA-2140678-A1 (CA)
Title: Coder and decoder for high-quality audio
Inventor: FIELDER LOUIS DUNN
IPC: G10L19/02
Filed: 1990-01-29
Abstract: A low bit-rate (192 kBits per second) transform encoder/decoder system (44.1 kHz or 48 kHz sampling rate) for high-quality music applications employs short time-domain sample blocks (128 samples/block) so that the system signal propagation delay is short enough for real-time aural feedback to a human operator. Carefully designed pairs of analysis/synthesis windows are used to achieve sufficient transform frequency selectivity despite the use of short sample blocks. A  synthesis window in the decoder has characteristics such that the product of its response and that of an analysis window in the encoder produces a composite response which sums to unity for two adjacent overlapped sample blocks. Adjacent time-domain signal samples blocks are overlapped and added to cancel the effects of the analysis and synthesis windows. A technique is provided for deriving suitable analysis/synthesis window pairs. In the encoder, a discrete transform having a function equivalent to the alternate application of a modified Discrete Cosine Transform and a modified Discrete Sine Transform according to the Time Domain Abasing Cancellation technique or, alternatively, a Discrete Fourier Transform is used to generate frequency-domain transform coefficients. The transform coefficients are nonuniformly quantized by assigning a feted number of bits and a variable number of bits determined adaptively based on psychoacoustic masking. A technique is described for assigning the Fated bit and adaptive bit allocations. The transmission of side information regarding adaptively allocated bits is not required. Error codes and protected data may be scattered throughout formatted frame outputs from the encoder in order to reduce sensitivity to noise bursts.
Patent CA-2141927-A1 (CA)
Inventor: CAPDEBOSCQ BERNARD
IPC: B65H29/20
Filed: 1995-02-06
Abstract: The station consists of a feeder (22,24) for the sheet material panels (20), delivering them to a stop (30) so that they drop onto a stack being formed on an elevator table (60) which moves down as the stack grows, separator arms (70) connected to a cross-member (79) and an output conveyor (90,94). The station is equipped with front and rear temporary supports (45,40) for the panels, situated in a plane more or less parallel to the table (60) and on a level with the lower edge of stop (30). The drive for the separator arm cross-member (79) consists of a drive chain or belt (73) at each end of the cross-member, passing being the front stop (30) and round pulleys (74,77).
Patent CA-2144026-A1 (CA)
Title: Process for the production of hollow carbon fiber membrane
Inventor: SOFFER ABRAHAM
IPC: D01D5/24
Filed: 1995-03-06
Abstract: A process for manufacturing a bundle of hollow carbon membranes, comprises the steps of: a. providing a bundle of hollow cellulose fibers; b. removing substantially all the absorbed water from the said fibers; c. heating the fibers to a range of temperatures where it pyrolyzes; d. supplying to the said fibers, during at least part of the heating thereof and after the water has been removed, a catalytically effective amount of a gaseous catalyst selected from among Lewis acids, and ionic salts that are at least partially volatile at the pyrolysis temperature range.
Patent CA-2145097-A1 (CA)
Title: Cushion
Inventor: HANNAGAN ANGUS P
IPC: A47C27/10
Filed: 1993-09-28
Abstract: A cushion for the seat of a chair is provided, having at least two groups of cyclically inflatable tubes (4, 6, 8, 10), each group comprising at least one tube. Control means (18) inflates and deflates each group sequentially. The cushion also has a buf-fer chamber (12, 14) maintained by the control means (18) in communication with the inflated group or groups of cyclically inflat-able tubes. The buffer chamber comprises at least one inflatable buffer tube which provides a part of the sitting surface of the chair.
Patent CA-2145522-A1 (CA)
Inventor: GRAY PETER ANDREW
IPC: E21D21/00
Filed: 1993-09-22
Abstract: A hollow bar (3) and a method of manufacturing the hollow bar are disclosed. Typically, the hollow bar is a threaded rock bolt or a drill rod. The hollow bar (3) comprises two or more elongate members (21a, 21b) connected together along the longitudi-nal edges (41) of the members (21a, 21b). The method comprises rolling the members (21a, 21b) and welding or gluing the mem-bers (21a, 21b) together along the longitudinal edges (41) of the members (21a, 21b).
Patent CA-2146053-A1 (CA)
Title: Architectural molding assembly with clamping brackets
Inventor: BRABANT ROBERT
IPC: E04F19/04
Filed: 1995-03-31
Abstract: An architectural molding assembly is comprised of straight molding pieces having a decorative outer surface and a channel in the rear surface thereof. A wall attaching plate is slidingly secured in the channel and has a slot or an aperture therein to engage with a fastener which is secured to a wall. The fastener may be in the form of a screw or a clamp having a projecting finger. When the attaching plates are engaged by the fasteners they are urged against the wall and maintained there under tension. No nail is inserted in the molding and molding connecting pieces and accordingly the assembly can be easily dismantled and remounted when desired.
Patent CA-2147014-A1 (CA)
Title: Computer mouse enhancer
Inventor: SLEEMAN GLEN E
IPC: C11D17/00
Filed: 1995-04-13
Abstract: A combination of plates and pads is provided for use with a computer mouse. Included are: a mouse plate for attachment under the mouse, the mouse plate having a low-friction lower surface, and means on the upper surface for affixing it to the underside of the mouse. The mouse plate includes an aperture through which the mouse ball can project. A wrist plate is provided, having a low-friction lower surface, and means on its upper surface for attaching a wrist pad. A palm pad isprovided for attaching to the upper surface of the mouse, and flexible means connect the mouse plate to the wrist plate. This combination of pad elements provides a cushioning effect which reduces strain on the various muscles and tendons involved.
Patent CA-2149090-A1 (CA)
Title: Vacuum filter element
Inventor: HAYTHORNTHWAITE JIMMY
IPC: B01D33/23
Filed: 1995-05-10
Abstract: A filter element for use in a rotating vacuum filter assembly is provided. It has frame having an inner end, an outer end and intermediate sides which define the perimeter of opposed substantially parallel filter regions and a central filter chamber, wherein the inner end is adapted for mounting the frame to a hollow central hub and wherein the inner end defines a central passage which cooperates with a corresponding passage in the hub for communication between the filter chamber and the interior of the hub. It uses a pleated insert mountedwithin the frame substantially parallel to the filter regions to bisect the filter chamber and define a series of alternating opposed V-shaped channels extending from the inner end to the outer end, each of which communicate with the central passage, wherein both sets of ridges of the pleated insert lie substantially coplanar with the corresponding filter regions so that when a filter media is stretched across the filter regions the media will rest upon the ridges and thereby define with the pleated insert a series of V-shaped flow chambers. When a vacuum source is applied at the interior of the hub, liquid is urged to pass through the filter media into the flow chambers and to the hub without the filter media collapsing against the V channel surfaces of the pleated insert. The filter element is useful for removing suspended particles from a liquid carrier.
Patent CA-2150802-A1 (CA)
Title: High Density Rearing System for Larvae
Inventor: HUGHES PATRICK R
IPC: A01K67/033
Filed: 1993-12-09
Abstract: Method and apparatus for rearing insects is disclosed. Information concerning the physical and dietary needs of the insect as well as behavioral characteristics are utilized to maximize the number of larvae reared per unit surface area of diet and per unit of rearing area while minimizing the amount of labor and materials required.      An enclosed rearing unit (1) is provided which can be located within an appropriate environment for rearing the insects. There are three sections within the rearing unit: 1) a diet space (2), 2) a larval space (3), and 3) a frass space (4).      The diet space (2) includes an appropriate diet medium for the insects. The larval space (3) is located below the diet spar (2) and includes a series of vertical partitions (12) perpendicular to and in contact with or nearly in contact with the diet medium such that the insect larvae are able to disperse themselves over the partitions (12). The frass space (4) is located below the larval space (3) such that any frass collects within the frass space (4) as it is produced and does not interfere with the larval space (3) or the diet space (2). The rearing system can further include an emergence pan (30) including an outlet for allowing emerging adults to enter an oviposition cage. The emergence pan (30) replaces the frass collection pan (24) when all of the larvae have pupated. The tearing unit is turned upside down such that the emergence pan (30) is located above the larval space (3) and the diet space (2).
Patent CA-2154414-A1 (CA)
Title: Combination treatment for inhibiting bone loss
Inventor: BLACK LARRY JOHN
IPC: A61P3/00
Filed: 1995-07-21
Abstract: The present invention provides a method for inhibiting bone loss comprising administering to a human in need thereof a first compound selected from 1) triarylethylenes; 2) 2,3-diaryl-2H-1-benzopyrans, 3) 1-aminoalkyl-2-phenylindoles; 4) 2-phenyl-3-aroylbenzothiophenes, 5) 1-substituted-2-aryl-dihydronaphthalenes; or 6) benzofurans, and a second compound being a bisphosphonate: or pharmaceutically acceptable salts and solvates thereof.  Also encompassed by the invention are combination pharmaceutical formulations and salts.
Patent CA-2155521-A1 (CA)
Title: Field synthesis and optical subsectioning for standing wave microscopy
Inventor: LANNI FREDERICK
IPC: G02B21/18
Filed: 1994-02-02
Abstract: In an improved optical microscope for observing a luminescent specimen, the specimen is excited by a time-multiplexed series of standing wave fields. Then an image of the specimen is recorded and displayed. This specimen can be incrementally moved and additional images can be created and combined. Images of the specimen can also be created when there are nodes or antinodes at the focal plane of the microscope.  These images can also be combined to produce an improved image of the specimen.
Patent CA-2157225-A1 (CA)
Title: Method and apparatus for fluxing and soldering terminals on a printed circuit board
Inventor: PETERSEN JOHN P
IPC: B23K1/20
Filed: 1995-08-30
Abstract: Fluxing and soldering terminals on a printed circuit board in an in-line process in which a wall of flux is directed against a surface of the board which moves in inclined manner as it passes through a fluxing station and towards a soldering station.  The process controls flux application to decrease the amount of flux applied from the leading end to the trailing end of the board, the board inclination resulting in flow of flux to redistribute it towards providing a constant flux thickness for the soldering step.  Particularly useful for processes involving "no-clean" flux application where residual flux after soldering is to be avoided because of potential electrical problems.