baber/WOPTO huggingface dataset:
Patent CA-2123174-A1 (CA)
Title: Multiwell In-Vitro Fertilization Plate
Inventor: STEVENS TIMOTHY A
IPC: B01L3/00
Filed: 1994-05-09
Abstract: A plate assembly for useful for in vitro fertilization procuedures such as receiving ova and for forming, evaluating, holding, manipulating and culturing embryos includes a base with an apportioned top surface and a sidewall. The top surface has a plurality of open wells embedded therein for receiving ova to be cultured. The wells are substantially cylindrical and have substantially flat closed bottoms to facilitate microscopic examination of the well contents. The assembly includes a removable lid for covering the top surface of the base. The lid is preferably divided into sections comparable to the top surface portions of the base. Each lid section may be separately slidably moved between a closed position where the lid covers a comparable portion of the top surface and an open position where the top surface is uncovered. The lid has projections which interact with grooves in the base in a cam/cam follower relationship to allow slidable movement of the lid sections between the closed and the open positions while retaining the lid sections to the base. The inside surface of the lid and the base top surface each have elements which interact when the lid is in the closed position to form a tortuous path for gas interchange between the wells and the outside environment, thus substantially preventing microbial contamination of the wells when the lid is closed.
Patent CA-2123541-A1 (CA)
Title: Sight glasses
Inventor: DICKSON KEVIN T
IPC: G01F23/02
Filed: 1994-05-13
Abstract: Title:           Improvements in Sight Glasses ABSTRACT        A sight glass for use with a metal bowl of a compressed air filter or lubricator comprises a rectangular chamber having a rear, brightly coloured wall and a front, transparent window formed internally with small triangular pyramids.  The pyramids retro-reflect light at an air interface but transmit it to the brightly coloured wall at a liquid interface.  An image comprising a brightly coloured band and a colourless band therefore appears in the window, the readily visible interface between the bands corresponding with the liquid level in the bowl.
Patent CA-2124691-A1 (CA)
Title: Compositions for eliciting cytotoxic t-lymphocyte responses against viruses
Inventor: SASTRY JAGANNADHA K
IPC: A61P31/04
Filed: 1992-12-02
Abstract: The present invention provides compositions and methods for the prevention and treatment of viral infections. The identification of distinct classes of peptides for use in both anti-viral vaccines and therapeutic formulations is reported. Peptide formulations are disclosed which enhance the systemic distribution, activity, and longevity of anti-viral cytotoxic T cells, and/or which protect human cells from HIV infection. A novel method for the rapid screening of cytotoxic T lymphocyte- (CTL-) inducing compounds, for use in CTL vaccines and in the preparation of specifically primed CTLs, is also disclosed.
Patent CA-2125206-A1 (CA)
Title: Vacuum valve control device and vacuum valve
Inventor: OHTSUKA TETSUSHI
IPC: G05D16/06
Filed: 1994-06-06
Abstract: The vacuum valve includes: a pressure control chamber for giving a vacuum force to a valve body (changeover valve) capable of connecting a valve operating chamber with a vacuum passage; a detecting valve capable of introducing a vacuum force into the pressure control chamber; a plunger directly driven by a liquid detecting diaphragm, wherein the plunger drives the detecting valve; and an opening time adjusting valve which is opened so that the vacuum introduced into the pressure control chamber can be released, wherein the opening time is automatically controlled by the vacuum in the vacuum discharge pipe. Furthermore, when the inside of a liquid level detecting pipe section is quickly decompressed, pressure in a pressure adjusting chamber is quickly released through a gap formed between a damping diaphragm and supporting section. The pressure adjusting chamber is communicated with an upper pressurizing chamber through a communicating hole. Therefore, when the pressure adjusting chamber is quickly decompressed, the upper pressurizing chamber is also quickly decompressed.      Due to the foregoing, resilient deformation of a liquid level detecting diaphragm is quickly canceled, and the pushing action conducted by a plunger on a detecting valve is released.
Patent CA-2125830-A1 (CA)
Title: Heteroaryl cinnamic acids as inhibitors of leukotriene biosynthesis
Inventor: FORTIN REJEAN
IPC: C07D309/10
Filed: 1994-06-14
Abstract: Compounds having the formula I:   (see formula I) are inhibitors of leukotriene biosynthesis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents. They are also useful in treating angina, cerebral spasm, glomerular nephritis, hepatitis, endotoxemia, uveitis, and allograft rejection and in preventing the formation of atherosclerotic plaques.
Patent CA-2126721-A1 (CA)
Title: Telecontrollable communication system having a remote transmission module
Inventor: KLEIN JOSEF
IPC: H04Q11/04
Filed: 1994-06-24
Abstract: A communication system equipped with a central computer means is connected to a service central via a communication network, for example, a telephone network of ISDN network, for telecontrol thereof. For the information exchange between the service central and the communication system, a teletransmission module is arranged in the latter, this telecommunication module being connected to the central computer means via a computer/bus interface and via a PCM-oriented system/bus interface. An information transmission via different communication networks, preferably via the telephone network or via the ISDN network, can be set using the teletransmission module. Due to the central arrangement of the teletransmission module with different information transmission procedures for different communication networks and due to the control of the call setup and cleardown for different communication networks by the central computer means that is possible as a result thereof, externally connectable transmission equipment (for example, modems) including a call setup and cleardown controller provided for this purpose can be eliminated.
Patent CA-2126969-A1 (CA)
Title: Method and composition for cleaning articles
Inventor: LEE THOMAS W S
IPC: H01L23/50
Filed: 1992-12-31
Abstract: In a method for cleaning articles, especially for removing flux after soldering, an article is contacted with a hydrocarbon-containing fluid containing one or more hydrocarbons selected from C8 to C15 paraffinic and naphthenic hydrocarbons and with an alcohol-containing fluid containing one or more alcohols selected from C5 to C15 straight-chain or branched-chain, saturated aliphatic alcohols. The hydrogen-containing fluid and alcohol-containing fluid are preferably in the form of a liquid mixture.  Efficient cleaning of articles, for example of electronic components after soldering, is possible without the use of halogen-containing solvents.
Patent CA-2127126-A1 (CA)
Title: Chiral synthesis with modified enzymes
Inventor: WILKS HELEN M
IPC: C12R1/19
Filed: 1993-01-29
Abstract: A method for modifying the specificity and/or efficiency of an enzyme, while retaining its catalytic activity, characterised in that it comprises: selecting an enzyme, the tertiary structure of which is substantially known or deduced; identifying at least one specificity and/or efficiency-related region; identifying or constructing unique restriction sites bounding the identified region in the DNA coding therefor; generating a DNA sequence which corresponds to at least a portion of the identified region, except that the nucleotides of at least one codon are randomized, or selecting as a substitute for at least a portion of the identified region an alternative such region, which may itself be similarly randomized; using the generated or substitute DNA sequence to replace the original such sequence; expressing the DNA including the generated or substitute DNA sequence; and selecting for a desired modification so that the DNA coding therefor may be isolated is disclosed.
Patent CA-2130060-A1 (CA)
Title: Method of preparing a ferrite compact
Inventor: TAKAHASHI YASUNORI
IPC: C04B35/26
Filed: 1994-08-12
Abstract: It is an object of the present invention to provide a process of producing a ferrite compact superior in the dimensional stability with scarce thermal contraction after compacting, and providing an easy and dust-explosion-free method of producing a hard ferrite compact is another object.     A method of preparing a ferrite compact according to the present invention is that a mixture of powdery raw materials for ferrite is roasted at 1200-1400°C to obtain a powdery ferrite; the powdery ferrite is cooled to a temperatures below the melting temperature of a powdery vitrification agent, then mixed with the powdery vitrification agent to obtain the powdery ferrite coated with the vitrification agent; and the coated powdery ferrite is compacted under heating at a temperature between the melting temperature of the vitrification agent and 700°C.
Patent CA-2130349-A1 (CA)
Inventor: SIMPSON ALVIN B
IPC: H02K33/00
Filed: 1993-01-29
Abstract: A hydraulic engine apparatus (10, 100, 3000) and method that converts pulsed electromagnetic energy into mechanical force and motion. A reciprocating piston (50), (103, 104), (304, 305) in a cylinder chamber (51), (101a, 101b), (301c, 303c) acts on a fluid (Fn) that is responsive to the pulsed electromagnetic energy. The cylinder chamber (51), (101a, 101b), (301c, 303c) acts on a fluid (Fn) that is responsive to the pulsed electromagnetic energy. The cylinder chamber (51), (101a, 101b), (301c, 303c) is provided with check-valved input and output ports (CV1-CV4), (CV1-CVB), (CV-CV4) which are hydraulically coupled to a hydraulic motor (640). The piston (50), (103, 104), (304, 305) has embedded permanent magnets (56), (PM1, PM2), (PMa, PMb) that coact with the pulsating electromagnets (EM1, EM2), (200, 300), (700, 800, 900) to produce the reciprocating action (A1, A2), (A11, A22), (Aa, Ar). The piston permanent  magnet (56), (PM1, PM2), (PMa, PMb) has protruding ends (56a, 56b), (103b, 104b), (702, 802) which are received within central bore portions (CRa, CRb), (CR11, CR22a), (701,801) of core members (CR1, CR2), (CR11, CR22), (CRx, CRy) of the electromagnets (EM1, EM2), (200, 200), (700, 800) for producing increased increased magnetic pull.
Patent CA-2134761-A1 (CA)
Title: Synthetic peptide vaccines for dental caries
Inventor: TAUBMAN MARTIN A
IPC: A61P31/04
Filed: 1993-04-30
Abstract: Immunization of animals with a composition containing either an amino acid sequence from the catalytic domain of gluco-syltransferase, an amino acid sequence from the glucan-binding region of glucosyltransferase or an amino acid sequence from the native surface domain of glucosyltransferase provoke antibody and T-cell immune responses to this enzyme. Since this enzyme has been implicated in the colonization of mutans streptococci on tooth surfaces, such immune responses are important for the prevention of dental caries. Multicomponent and multivalent compositions which include these amino acid sequences provide effective vaccine capabilities.
Patent CA-2135422-A1 (CA)
Title: Support System for Paper Magazine
Inventor: TAMAI MASAYUKI
IPC: G03B27/58
Filed: 1994-11-09
Abstract: A support system for paper magazine comprises: a support surface 3; a paper feeder box 4; an upper paper guide 17a and a lower paper guide 17b both arranged over the support surface 3 before the paper inlet of the paper feeder box 4; a pair of magazine guides 20 mounted on the support surface 3 for guiding both sides of the paper magazine 2 during the loading; a lock cam 24 for swing movements to engage with and disengage from the cam engaging projection of the paper magazine 2 and urged by the yielding force of a spring to press the cam engaging projection towards the paper feeder box 4; and a lever holding mechanism 33 for holding the lock cam 24 in its unlock position after the return movement of a swing arm 28 is completed.
Patent CA-2140753-A1 (CA)
Title: Warming blanket having multiple inlets and method
Inventor: DICKERHOFF SCOTT D
IPC: A47G9/02
Filed: 1993-08-03
Abstract: The present invention relates to a blanket (10) for use with forced air convection systems, wherein the blanket includes multiple inlet ports (30, 40). By providing a blanket (10) with multiple inlet ports (30, 40), the user has the choice of positioning the air supply or blower unit and the supply hose on either side of the patient. In addition, in a preferred embodiment, the inlet ports are resealable, thus allowing the user to switch inlets during use.
Patent CA-2142392-A1 (CA)
Inventor: KROON PETER
IPC: G10L19/04
Filed: 1995-02-13
Abstract: A speech coding system robust to frame erasure (or packet loss) is described. Illustrative embodiments are directed to a modified version of CCITT standard G.728. In the event of frame erasure, vectors of an excitation signal are synthesized based on previously stored excitation signal vectors generated during non-erased frames. This synthesis differs for voiced and non-voiced speech. During erased frames, linear prediction filter coefficients are synthesized as a weighted extrapolation of a set of linear prediction filter coefficients determined during non-erased frames. The weighting factor is a number less than 1. This weighting accomplishes a bandwidth-expansion of peaks in the frequency response of a linear predictive filter. Computational complexity during erased frames is reduced through the elimination of certain computations needed during non-erased frames only. This reduction in computational complexity offsets additional computation required for excitation signal synthesis and linear prediction filter coefficient generation during erased frames.
Patent CA-2145134-A1 (CA)
Title: Thermoplastic molding materials comprising a graft copolymer and an olefin copolymer
Inventor: NIESSNER NORBERT
IPC: C08J5/18
Filed: 1995-03-21
Abstract: Thermoplastic molding materials contain essentially (A)   from 20 to 99 % by weight of at least one graft copolymer, obtainable essentially from (a1)  from 30 to 90 % by weight of a core obtainable by poly-merization of a monomer mixture consisting essentially of (a11) from 80 to 99.99 % by weight of at least one C1-C10-alkyl ester of acrylic acid, (a12) from 20 to 0.01 % by weight of a copolymerizable, polyfunctional crosslinking monomer and (a13) from 0 to 40 % by weight of a further copolymerizable, monoethylenically unsaturated monomer, and (a2)  from 70 to 10 % by weight of a graft shell obtainable by polymerization of a monomer mixture in the presence of the core (a1), consisting essentially of (a21) from 50 to 100 % by weight of a styrene compound of the general formula (I)            (I) where R1 and R2, independently of one another, are each hydrogen or C1-C8-alkyl and/or of a C1-C8-alkyl ester of methacrylic or acrylic acid, (a22) from 50 to 0 % by weight of a monofunctional comonomer, and (B)   from 80 to 1 % by weight of a copolymer obtainable from at least one alpha-olefin and at least one polar comonomer, with the proviso that vinyl acetate or a vinylaromatic monomer are not used as monomers, and (C)   from 0 to 50 % by weight, based on the total weight of components (A), (B) and (C), of a thermoplastic polymer obtainable by polymerization of a monomer mixture consisting essentially of (c1)  from 50 to 100 % by weight of a vinylaromatic monomer and/or of a C1-C8-alkyl ester of methacrylic or acrylic acid and (c2)  from 50 to 0 % by weight of a monofunctional comonomer.
Patent CA-2147641-A1 (CA)
Inventor: IMAI HIDEKI
IPC: H04N1/44
Filed: 1993-10-20
Abstract: Information is read from a medium such as paper in which information is written. The read information is enciphered. When encryption processing is performed, an encryption key is used. As the encryption key, an encryption key generated for each encryption is used, or an encryption key already generated is used again. The enciphered information is written into another medium such as paper. When decryption processing is performed, information is read from the medium in which the enciphered information is written. The read information is deciphered using as a decryption key the same key as the encryption key used when the encryption processing is performed. The deciphered information is written into another medium such as paper.
Patent CA-2151885-A1 (CA)
Inventor: CROOK PAUL
IPC: C22C19/05
Filed: 1995-06-15
Abstract: The C-type nickel base alloys of the type containing containing significant amounts of chromium (about 16 to 25%) and molybdenum (about 12 to 18%) may be improved by adding small but critical amounts of copper (about 1 to 3.5%) which increases their general corrosion resistance to a wide range of both oxidizing and non-oxidizingindustrial media.
Patent CA-2153013-A1 (CA)
Inventor: HWU CHYN-HERNG
IPC: B63B34/56
Filed: 1995-06-29
Abstract: The present invention relates to a mechanism  capable of  making variation in radial angle, in particular, to a mechanism  wherein variations in the angle of rotation of a particular component  would result in the variations in radial  angle of another component.  By such  arrangement, the acting area of the  mechanism can be radially extended  or  retracted.   The mechanism comprises primarily a swing bar, an extendable bar, a push bar, a rotatable bar, a connecting  bar, a support bar, and a plurality of fulcrums.  In the mechanism,  the  swing  bar  and rotatable bar  are  provided with  a  fixed fulcrum each such  that these  bars can  only swing about the fixed fulcrums. The  remaining  components are coupled  to each  other  by  means  of  movable pivots, so that the swing bar may  change its angle of rotation to extend the extendable  bar  radially.  If the extendable bar is replaced by an extendable plate, an extended area extending in the radial direction will result.
Patent CA-2153431-A1 (CA)
Inventor: WILLIAMS MICHAEL R
IPC: F16K41/14
Filed: 1995-07-07
Abstract: A dual backseat valve assembly comprising: a valve body having an interior valve chamber and a generally horizontal flow passage; a valve gate adapted to reciprocate vertically within said valve chamber, said gate having a generally horizontal opening therethrough adapted to move into and out of alignment with said flow passage to effect an open or closed valve position; a valve stem adapted to be received in threaded engagement with a gate lift nut mounted in said gate such that rotation of said stem causes vertical movement of said gate; a valve bonnet fixed to said valve body receiving said stem therethrough; a stem packing assembly mounted in said bonnet and adapted to form a seal between said stem and bonnet; and means for sealing between said stem and bonnet located between said packing assembly and said valve chamber when said valve gate is in an open or closed position.
Patent CA-2154188-A1 (CA)
Inventor: HAMMOND PHILIP STUART
IPC: B60C15/04
Filed: 1995-07-19
Abstract: A run-flat radial ply pneumatic tire 10 having a carcass 30 reinforced with elastomeric sidewall fillers 42,46,48 and at least three bead cores 26,26' and 37 is disclosed.  At least one bead core 37 extends radially inwardly of the tread 12 and one or more reinforcing belts 36.  The tire 10 made according to the invention can exhibit equal to or improved ride over conventional tires while also providing a limited run-flat capability.  In several preferred embodiments improved wet traction tread configurations are employed.
Patent CA-2155271-A1 (CA)
Title: Tube Extractor
Inventor: WARING THOMAS
IPC: G21C19/36
Filed: 1995-08-02
Abstract: A tube extractor includes a hardened 360 expandable cone which is expandable inside the end of a tube.  A cylindrical stand off spaced from the expandable cone can be moved with respect to the expandable cone by rotating and extractor nut to extract the tube.
Patent CA-2155551-A1 (CA)
Title: Improved surfaces for sporting and other activities
Inventor: CANNON MICHAEL HARRY WILSON
IPC: E01C13/00
Filed: 1994-02-03
Abstract: An improved grass surface in which the grass is grown in a layer of material comprising sand, an organic growth surface medium and elongate synthetic fibres, the fibres being randomly dispersed as separate individual fibres in the growing material and having an average fibre length from 5 mm to 75 mm and/or an improved sub-base for surfaces for sporting and/or other activities comprising the said material.
Patent CA-2156180-A1 (CA)
Title: Method and apparatus for transcoding a digitally compressed high definition television bitstream to a standard definition television bitstream
Inventor: CHALLAPALI KIRAN
IPC: H04N7/26
Filed: 1994-12-06
Abstract: A method and apparatus for transcoding macroblocks of a high definition television signal to co-sited macroblocks of a standard definition television signal wherein SD macroblocks are derived directly from co-sited HD macroblocks, i.e. without having to compute the SD macroblock information from its corresponding SD image sequence. A transcoder transcodes a first resolution to a second digital video signal having a second resolution. The transcoder has a decoder for decoding the first digital video signal to obtain a first image sequence having the first resolution. A processor retrieves first macroblock information from the first digital video signal, and derives from the first macroblock information of a group of first macroblocks of said first video signal, second macroblock information of a co-sited macroblock of the second video signal. A sampler derives a second image sequence having the second resolution from said first image sequence. An encoder encodes the second image sequence into the second digital video signal. The second digital video signal includes the second macroblock information derived from the group of first macroblocks of the first video signal.
Patent CA-2157843-A1 (CA)
Title: Pump for delivering hot, corrosive media
Inventor: DUMMERSDORF HANS-ULRICH
IPC: H02K49/02
Filed: 1995-09-08
Abstract: The pump comprises a drive part 2 and a pump body 1, the drive shaft 4 being sealed off from the corrosive medium by a shaft seal. The shaft seal consists of a stator ring which is fitted into the pump body 1 and/or into the drive part 2 and through which the drive shaft 4 is passed while leaving a seal gap 5. One or more dry-running bearings 11 for the drive shaft 4 is/are arranged in the drive part 2. The drive part 2 also comprises a gas channel 18, which communicates in terms of flow with the seal gap 5, with a supply connection 19 and a discharge connection 20. While the pump is operating a hot gas is admitted to the gas flow channel 18 via the supply connection 19 and leaves the drive part again through the discharge connection 20. The supply pressure is set such that the static pressure of the gas in the gas flow channel 18 above the stator ring 3 is higher than the pressure of the delivery medium which partially or completely fills the pump body.