baber/WOPTO huggingface dataset:
Patent CA-2259906-A1 (CA)
Title: Method for acylating 10-deacetylbaccatin iii selectively at the c-10 position
Inventor: SISTI NICHOLAS J
IPC: C07D305/14
Filed: 1997-07-09
Abstract: A method of acylating 10-deacetylbaccatin III at the C-10 position over the C7 hydroxy position thereof to produce baccatin III is accomplished first by dissolving 10-deacetylbaccatin III in an anhydrous ether solvent, such as tetrahydrofuran, at a reduced temperature, preferably -78 ~C. At least an equivalent of a lithium base, preferably about two equivalents n-butyl lithium, is next added followed by the addition of an acylating agent, such as acetyl chloride. The resulting solution is quenched, for example with ammonium chloride, to eliminate excess of the lithium base and the acylating agent. The result is baccatin III in solution. The baccatin III may be recovered by removing the ether solvent under vacuum to produce a residue that may then be dissolved, for example in ethyl acetate, with this solution being washed to remove unwanted salt compounds. Recrystallization and column chromatography may be employed to purify the baccatin III.
Patent CA-2260839-A1 (CA)
Inventor: SHALVI OFIR
IPC: H04L27/01
Filed: 1997-07-18
Abstract: The digital communications receiver receives an analogue signal, modulated with digital information. The receiver converts the analogue signal to a digital signal, and demodulates the digital signal to recover the complex valued components of the transmitted digital signal. The complex valued components are low pass filtered and passed through an adaptive pre-equalizer filter, to reduce eigen value spread. The filtered complex valued signal is then subject to decision feedback equalisation, which operates using a series of adaptive filters additionally to remove artifacts of inter-symbol interference. The resulting filtered and equalized complex valued signal is then converted to a digital signal to recover the digital information.
Patent CA-2262457-A1 (CA)
Title: Advanced rollback wheel-lift
Inventor: YOUNG CHARLES E
IPC: B60P3/12
Filed: 1997-08-07
Abstract: An improved wheel-lift apparatus (63) attachable to various types of transport trucks (22), including rollback trucks for loading and carrying disabled vehicles (51). The improved wheel-lift apparatus provides a horizontal extendable boom mechanism (55) long enough for receiving disabled vehicles. As a result of the wheel-lift's "low angle" or horizontal approach, the risk of damage occurring to the chassis or body of the disabled vehicle while in the loading and carrying modes is greatly diminished.
Patent CA-2267357-A1 (CA)
Title: Method of shaping powdery, thermally unstable thermoplastic shaping compounds
Inventor: RADUSCH HANS-JOACHIM
IPC: B29C43/00
Filed: 1997-09-05
Abstract: The invention concerns powdery, thermally unstable thermoplastic shaping compounds which are to be processed to form semi-finished products or shaped parts such that thermal decomposition processes are prevented and the semi-finished products and shaped parts display a high level of mechanical properties. To that end, the powdery thermoplastic shaping compound, which is precompressed under hydrostatic pressure, is exposed to a deviatoric stress below its melting temperature.
Patent CA-2269240-A1 (CA)
Inventor: CHEN TAO
IPC: H04B7/005
Filed: 1997-10-20
Abstract: A base station (10) of the cellular telephone forward link power control system transmits frames initially at a high default transmit power level, then decreases the power level incrementally until either a frame erasure is detected, triggering an immediate sharp increase in transmission power, or until a predetermined period of time has elapsed, after which the base station (10) performs a fast downward move in the transmit power level. The fast downward move constitutes a sharp reduction in the transmit power level. In one example, the fast downward move is performed if one hundred consecutive frames are successively transmitted without a frame erasure. By providing the fast downward move in transmit power, the power transmitted is decreased on the average. In particular, the fast downward move allows the amount of transmit power to be reduced significantly in circumstances where slow incremental decreases in power would result in excess power being employed.  Method and apparatus embodiments are disclosed.
Patent CA-2270087-A1 (CA)
Title: Apparatus and methods for transferring workpiece in a transfer press machine
Inventor: MORI YOSHIO
IPC: B21D43/05
Filed: 1999-04-23
Abstract: Cross bars 18, to which workpiece holders 19 are attached, are provided across a press line L, together with feed beams 14 between which the cross bars are installed and which are suspended from the lift beams 13 and can move freely in the horizontal direction of the press line. A feed and transfer device 52 can move the feed beams freely in the horizontal direction of the press line. A connecting rod 56 connects the feed beams and the rack beam in a freely rotatable manner. A connecting link 60 connects a point in the vicinity of an intermediate portion of the connecting rod to a bracket 58 installed on the rack beam, in a freely rotatable manner. An operating direction changeover mechanism 61 converts the differential movement caused by the curvature of the press transfer motion, produced in the feed beams when the lift beams are raised or lowered, into a horizontal movement in the direction of the press line in synchronism with the raising or lowering of the lift beams.
Patent CA-2270431-A1 (CA)
Inventor: BEELEY LEE JAMES
IPC: C12Q1/68
Filed: 1997-10-30
Abstract: A method for the detection of a compound that mimics, potentiates or inhibits the physiological effect of the ob-protein, which method comprises: (a) for a compound which mimics the physiological effect of the ob-protein, assessing the effect of the compound upon an ob-protein activated signal transducer and activator of transcription (STAT) DNA response element coupled to a reporter gene; or (b) for a compound which potentiates or inhibits the physiological effect of the ob-protein, assessing the effect of the compound upon the response provided by ob-protein upon an ob-protein activated STAT DNA response element coupled to a reporter gene; wherein, the response element and the reporter being expressed in an ob-protein responsive cell line, which cell line is selected from the list consisting of: a hypothalamic derived cell line; a pheochromocytoma derived cell line; a haematopoietic derived cell line; a pancreatic derived cell line; a liver derived cell line; a preadipocyte derived cell line; a skeletal muscle derived cell line; and an ovarian derived cell line; or the response element and the reporter are expressed in a cell line, which cell line (the engineered cell line) is also transfected with a polypeptide which is capable of mediating the stimulation by ob-protein of an ob-protein activated STAT DNA response element and contains the appropriate STAT proteins.
Patent CA-2272062-A1 (CA)
Title: Mycobactericidal compositions
Inventor: NANAVATI NARENDRA
IPC: A01N33/12
Filed: 1997-09-10
Abstract: Disclosed are aqueous mycobacterial concentrate compositions at a pH in the range of 6 to 12 which comprise per 100 % weight of a concentrate composition:  a) from about 0.1 % wt. to about 25 % wt. of a germicidal cationic quaternary ammonium compound; b) from about 0.25 % wt. to about 25 % wt. of a solvent selected from: phenoxyalcohol, glycol ether, or mixtures thereof; and, c) water. The concentrate compositions may be used in a ready-to-use form, or may be further diluted with water to form a disinfecting composition therefrom.  The compositions may also include an effective amount of a pH adjusting agent, such as sodium hydroxide or triethanolamine. The compositions feature reduced amounts of active constituents than those known to the art, and are particularly effective against Mycobacterium terrae.
Patent CA-2272539-A1 (CA)
Title: Process for the stereoselective production of nitro-enamine compounds
Inventor: SINGAM PULLA R
IPC: C07D405/04
Filed: 1997-12-12
Abstract: The present invention relates to an asymmetric Michael Addition reaction to produce nitro ketone diasteroisomers with enhanced stereoselectivity.
Patent CA-2272560-A1 (CA)
Inventor: COCHRAN BRUCE A
IPC: H03L7/107
Filed: 1997-11-24
Abstract: A digital demodulator (10) reads symbol samples into a memory buffer (38) that can be played forward and backward into a phase locked loop (48). During an initial non-data directed symbol timing estimating phase (56) the demodulator (10) achieves an approximate frequency synchronization and starts to achieve phase synchronization on an incoming stream of symbols. During a first forward readout pass (58) of stored samples, the phase locked loop(48) begins the frequency and phase convergence. During subsequent pass (60) using a reverse readout of stored samples, phase locked loop (48) continues to converge toward zero phase error. Then another forward pass (66), phase locked loop (48) achieves usable frequency and phase synchronization of carrier and begins valid data extraction.
Patent CA-2272744-A1 (CA)
Inventor: GREGORY RICHARD J
IPC: A61K48/00
Filed: 1997-11-20
Abstract: Vecteurs d'adénovirus chimériques comportant une séquence nucléotidique d'un premier adénovirus, dans lequel la totalité ou une partie d'au moins un gène de ce premier adénovirus, codant une protéine qui facilite la liaison de ce vecteur à une cellule cible de mammifère, ou la pénétration du vecteur à l'intérieur de la cellule, est remplacée par la totalité ou une partie du gène correspondant d'un second adénovirus appartenant au sous-groupe D. Ce vecteur comporte en outre un transgène coopérant avec un promoteur eucaryote pour promouvoir l'expression du vecteur dans une cellule de mammifère. L'invention porte également sur des compositions contenant ces vecteurs et sur des procédés utilisant ces vecteurs pour transporter des transgènes dans des cellules cibles de mammifères, en particulier dans les cellules épithéliales des voies respiratoires.
Patent CA-2274010-A1 (CA)
Inventor: POLLAUD DULIAND JACKY
IPC: A63B69/36
Filed: 1997-12-03
Abstract: The invention concerns a modular base for practising golf comprising a main element (2) on which is fixed a second element (3) for defining different spaces (3<u>i</u>, 3<u>j</u>, 3<u>n</u>) respectively for receiving the ball, installing a practice brush (6) and holding in place a mat (8), while the main element (2) is equipped for receiving an interchangeable trampling mat (4). Elements (2) and (3) are mutually assembled to constitute either a base for a left-handed person, or a base for a right-handed person, or a base for both.
Patent CA-2275504-A1 (CA)
Title: Pharmacogenetic methods for use in the treatment of nervous system diseases
Inventor: SCHAPPERT KEITH
IPC: C12Q1/68
Filed: 1997-12-16
Abstract: The present invention provides a method for determining the appropriate therapy and/or prognosis for a patient diagnosed with a neurological disease. The present invention also provides a method for the identification of human subjects for placement in clinical drug trials of drugs being tested for the treatment of neurological disease.
Patent CA-2281667-A1 (CA)
Title: Railroad hopper car underframe transition casting
Inventor: MCCLURG CARL D
IPC: B61D7/00
Filed: 1998-02-13
Abstract: A railroad hopper car (10) for carrying loads of commodities comprises spaced trucks (12) and a car body (14) supported on the spaced trucks (12). The car body (14) includes an underframe having a center sill (40) and discharge openings (26). The center sill (40) is arranged in the area of the discharge openings (26) toward the loaded commodities, and has surfaces sloped toward the discharge openings (26).      The underframe has members (100) connecting the car body (14) to the spaced trucks (12). The underframe members (100) have shapes distinct from the shape of the center sill (40). The car body (14) further includes transition members (102) between the center sill (40) and underframe members (102). The transition members (102) along the center sill (40) are sized and shaped to fit with the center sill (40), and the transition members (102) along the underframe members (100) are sized and shaped to fit with the underframe members (100). The transition members (102) transit between the center sill (40) and underframe members (100), allowing the center sill (40) to have sloped surfaces while the underframe members (100) have other shapes.
Patent CA-2282003-A1 (CA)
Title: Application of film forming technology to fragrance control release system; and resultant fragrance control release systems
Inventor: SHEFER SHMUEL DAVID
IPC: A61L9/04
Filed: 1999-09-09
Abstract: Described is a fragrance control release system which is an emulsifier-free, single phase, nonporous, continuous, permeable polymeric film having a substantially uniform thickness of from about 1 up to about 150 microns, having entrapped and dissolved therein molecules of at least one fragrance substance capable of evolving from said film into the environment proximate said film by means of molecular diffusion at a permeation rate of from about 1 x 10 -7 up to about 0.1 mg-mm/cm2-min in a sustained and controlled release manner. Also described is a process for using the aforementioned system for imparting a fragrance into the environment above the unobstructed outer surface of the aforementioned polymer film which is coated on the surface of a solid or semi-solid support, e.g., a woven or non-woven fabric substrate; or a solid surface or human epidermis.
Patent CA-2283089-A1 (CA)
Title: Heat exchanger and method for preparing it
Inventor: SUGIYAMA YOICHI
IPC: F28D21/00
Filed: 1999-09-23
Abstract: A method for preparing a heat exchanger, comprising forming a moisture-permeable film having an air-impermeable function on a single side of a plate-shaped porous member to provide a gas-impermeable member for heat exchange, bonding a spacer corrugated for forming a fluid passage to a side of the gas-impermeable member with the moisture-permeable film formed thereon to provide a plurality of heat exchanger constituent elements, and layering the heat exchanger constituent elements so that the spacer in each of the heat exchanger constituent elements forms a fluid passage in each layer.
Patent CA-2285487-A1 (CA)
Inventor: ALTER LLOYD
IPC: A42B3/00
Filed: 1999-10-07
Abstract: A protective helmet which is particularly useful for sports such as skiing and the like includes a head cover formed from standard stretch hat material with independent front and rear soft protective pads fitted internally of the head cover. The pads form a domed construction which has a parting line generally centrally of the construction where the pads meet with one another to allow fitting of the helmet to different head sizes.
Patent CA-2285938-A1 (CA)
Title: Methods for fabricating enclosed microchannel structures
Inventor: AMIGO M GORETTY ALONSO
IPC: B01L3/00
Filed: 1998-04-03
Abstract: Methods are provided for the fabrication of polymeric microchannel structures having enclosed microchannels of capillary dimension. The microchannel structures are constructed of a base member (12) and a cover member (14), sealed together. A microchannel structure having walls of a plastic material is formed in a generally planar surface of at least the base member.  The cover member has at least one generally planar surface, and the microchannel structure is enclosed by bonding the planar surfaces of the cover member and the base member together. In some embodiments the surfaces of the cover member and base member are both of plastic material, and are directly thermally bonded. In some embodiments a bonding material is applied to one of the surfaces prior to bringing the surfaces together. Suitable bonding material are disclosed.
Patent CA-2287096-A1 (CA)
Inventor: KLINKNER STEVEN R
IPC: H04L9/32
Filed: 1999-10-22
Abstract: A method and apparatus provide for selective encryption between a user and a network ingress/egress point or between a service provider and such an ingress/egress point. Software modules in a peer interface permit selective activation of encryption for particular socket connections. The peer and the ingress/egress point then exchange information such as an encryption key to facilitate the transfer of encrypted information between the peer and that point. Since the network itself is secure, transfers within the network can be performed with decrypted data. However, if information is to be transferred again outside of the network then the data could be encrypted at the egress point.
Patent CA-2289041-A1 (CA)
Title: Cosmetic particulate gel carriers for topically applied active agents
Inventor: DING LI
IPC: A61K8/11
Filed: 1998-05-01
Abstract: Crushable gel beads (10) formed of an agar complex provide novel cosmetic, pharmaceutical, etc. delivery vehicles for topical delivery of biologically or cosmetically active agents. Preferred agar beads (10) are complexes of a continuous phase of agar gel (12) in a self-supporting solid or semi-solid form with a restraining polymer (14). Entrapped in and dispersed randomly throughout each agar bead (10) is a water-soluble, preferably polar, restraining polymer (14), preferably a quaternized cationic polymer, such as polyquaternium (24) or steardimonium hydroxyethylcellulose. Various active agents (16) may be bound to restraining polymer (14), for example ascorbic acid, lactic acid or papain. Methods of manufacture are also described.
Patent CA-2291818-A1 (CA)
Inventor: PARK HOJONG
IPC: B26B17/00
Filed: 1998-06-18
Abstract: A non-power type of hairs of the nostrils cutter according to the present invention includes: a first folding portion which is made by folding a steel plate having a good degree of elasticity and strength, on a center portion in a downward direction thereof; handling parting portions which are formed to be opposite to each other centering around the first folding portion; second and third folding portions which are formed on the upper portions of the handling parting portions; a cutting ring having a hole which is formed to be integrated with the second folding portion of the one handling parting portion; and a circular cutting plate which is formed to be integrated with the third folding portion of the other handling parting portion and is passed through the hole.
Patent CA-2293006-A1 (CA)
Inventor: GIBSON JOSEPH
IPC: B65G45/16
Filed: 1999-12-22
Abstract: The present invention describes a tensioner for a scraper blade assembly that automatically increases the effective torque on the support arm over time. The tensioner is comprised of a torsion cam engaging the support arm of the scraper blade assembly, a torsion cable engaging the cam, a tension rod with a spring surrounding the rod secured to the torsion cable. Over time, as the scraper blade wears down and the spring force decreases, the torsion cam is slowly rotated to increase the torque arm of the invention and thereby increase the effective torque on the support arm and compensate for the decrease in spring force. This invention may be adapted for use with any existing scraper blade assembly.
Patent CA-2293987-A1 (CA)
Title: Air flow passage for a cyclonic separator and vacuum cleaner having same
Inventor: SZYLOWIEC TED
IPC: B04C5/103
Filed: 2000-01-07
Abstract: A cyclonic separation device. is provided having improved pressure loss characteristics. A fluid supply conduit in flow communication with an inlet to a cyclone is located and configured to extend longitudinally through a central portion of the cyclone, whereby the sharp bending of the conduit may be reduced, thereby reducing pressure losses in the device, without unduly interfering with the cyclonic flow within the cyclone. The present invention may be adapted for use with cyclonic separation devices of all types, including single- and multi-stage cyclonic separators. The cyclonic separation device may be incorporated in a vacuum cleaner such as an upright vacuum cleaner. A three dimensional conduit which is optionally used with a cyclonic separator is provided.
Patent CA-2297786-A1 (CA)
Title: New immunoprotective influenza antigen and its use in vaccination
Inventor: NEIRYNCK SABINE
IPC: A61K38/00
Filed: 1998-08-05
Abstract: The present invention relates to an influenza antigen, comprising a fusion product of at least the extracellular part of a conserved influenza membrane protein or a functional fragment thereof and a presenting carrier, which may be a presenting (poly)peptide or a non-peptidic structure, such as glycans, peptide mimetics, synthetic polymers. The invention further relates to a vaccine against influenza, comprising at least an antigen of the invention, optionally in the presence of one or more excipients. The invention also relates to use of the antigen, a method for preparing the antigen and acceptor cells expressing the antigen.
Patent CA-2298188-A1 (CA)
Title: Cosmetic compounds containing one anionic hydroxyalkylether surfactant and one cationic polymer and the uses thereof
Inventor: GARNIER NATHALIE
IPC: C11D3/20
Filed: 2000-02-15
Abstract: The composition contains, in cosmetically acceptable medium, at least one cationic non-cellulosic polymer having cationic charge density at least 2 (preferably 2-8.5) mol-equivalent/g, and at least one anionic surfactant of hydroxy-2-alkyl carboxylic (including salts) type. Independent claims are also included for:  (1) the use of composition as claimed for washing keratin fibers, especially hair; and  (2) process of treatment of keratin matter, such as hair, comprising application of composition as claimed, optionally followed by rinsing.
Patent CA-2302028-A1 (CA)
Inventor: YOSHIKAWA NOBUHIRO
IPC: G03G15/00
Filed: 1998-08-18
Abstract: A cleaning device and method for cleaning a paper path surface upon which paper travels within a printing apparatus such as a computer printer, a photocopy machine, a fax machine, and the like. The cleaning device is a flexible substrate sheet (10) having a first side (14) and a second side (18), with the first side (14) coated preferably in its entirety with an exposed adhesive (12) having a tack strength between about 0.0002 and about 0.12 pound force-square inch. The second side of the substrate sheet can have laminated thereto a foam resin (16) to provide a flexible thickness that assures pressured contact with all paper path surfaces to be cleaned. A lint-free cloth layer (20) can be laminated to the foam resin (16) if present, or the cloth layer can be laminated directly to the second surface of the sheet substrate (18). The substrate sheet is fed into the printing apparatus and travels therethrough along the paper path surfaces upon which paper is conveyed.
Patent CA-2307562-A1 (CA)
Title: Method and apparatus for producing a gear wheel
Inventor: SANDNER CHRISTIAN
IPC: B22F5/08
Filed: 1998-10-27
Abstract: There are described a method and an apparatus for producing a gear wheel from a powder metal blank (1) pressed and sintered with an overmeasure in the tooth-ing area, which powder metal blank is compacted under a plastic deformation in the vicinity of the overmeasure by pressing against a counter-toothing (8) of at least one rotating pressing tool (3) by the overmeasure, which counter-toothing engages in the toothing (9) of the powder metal blank (1). To create advantageous constructional conditions it is proposed that the counter-toothing (8) designed as internal toothing of the annular pressing tool (3) enclosing the powder metal blank (1) is pressed into the toothing (9) of the powder metal blank (1) by means of a pressure roller rolling on the outside periphery (10) of the pressing tool (3).