baber/WOPTO huggingface dataset:
Patent CA-2267129-A1 (CA)
Inventor: BROSIG HOLGER
IPC: A61K31/22
Filed: 1997-10-10
Abstract: L'invention de nouveaux composés dérivés de la pentaérythrite correspondants aux formules (I), (XIV), (XVI), (XIX) et (XXII), dont les substituants ont la signification donnée dans la description. Ces dérivés peuvent être utilisés comme substances pharmaceutiques, en particulier pour le traitement de maladies du système cardiovasculaire.
Patent CA-2268353-A1 (CA)
Inventor: GAROFF HENRIK
IPC: A61K48/00
Filed: 1997-10-10
Abstract: The present invention relates to RNA vectors comprising alphavirus RNA having inserted therein a recombinant retrovirus genome containing a foreign RNA  sequence encoding a biologically active substance. The vectors of the present invention provide for the high level expression of the recombinant retrovirus genome directly in the cell cytoplasm of eukaryotic cells. When coexpressed with structural proteins of the retrovirus, the recombinant genome can efficiently be packaged into infectious recombinant retrovirus, also called retrovirus vectors, which can transduce the foreign RNA into recipient cells.  Most importantly this cytoplasmic expression system facilitates the efficient production of vectors containing foreign RNA comprising genes in combination with introns or other control elements of gene expression. Such vectors have been impossible or very difficult to produce by the conventional nuclear expression systems because of RNA splicing.
Patent CA-2272484-A1 (CA)
Title: Operable and efficient distillation schemes for multicomponent separations
Inventor: AGRAWAL RAKESH
IPC: F25J3/04
Filed: 1999-05-20
Abstract: The present invention teaches an efficient and easier to operate distillation system to separate mixtures containing three or more components into streams enriched in one of the components. In this invention, a liquid stream enriched in the least volatile component is withdrawn from the bottom of one distillation column while a vapor stream enriched in the most volatile component is withdrawn from the top of another distillation column. Of these two distillation columns, the pressure of the distillation column with the bottom liquid enriched in the least volatile component is higher; and this higher pressure distillation column transfers at least two vapor streams from different locations to either one or more other distillation columns within the distillation system. For a ternary mixture, both the vapor streams are transferred to the distillation column with the top vapor enriched in the most volatile component. In the preferred mode, at least one of the vapor transfer is part of a two-way communication between the two columns, i.e., in addition to the transfer of the vapor stream, a return liquid stream is implemented between the same locations of the two columns. This invention allows the flow of all vapor streams from a higher pressure column to a lower pressure column and thereby does not suffer with the operating pressure constraints of the prior art efficient processes.
Patent CA-2274124-A1 (CA)
Inventor: FOGG BRIAN
IPC: C08G18/40
Filed: 1997-10-21
Abstract: An open-celled polyurethane foam is provided having a density of 1.5 to 5.0 pcf, a G value of 30 to 80 over a static load range of 1.0 to 2.0 psi based on a 2.0 inch thickness and a 24 inch drop height and, an airflow in the range of 0.05 to 0.5 scfm, 25 % as compressive strength of 4.0 psi or more prepared by a process comprising reacting, under foam forming conditions: (a) an isocyanate-reactive component comprising (i) 20 to 80 % of a first polyol selected from the group consisting of polyether diols, polyether triols and mixtures thereof having a molecular weight of 2000 to 10,000 and an ethylene oxide content of less than 50 %; and (ii) 80 to 20 % of a second polyol selected from the group consisting of polyether diols, polyether triols, polyester diols, polyester triols and mixtures thereof having a molecular weight of 300 to 1500 and an ethylene oxide content of less than 50 %; (b) a polyisocyanate component comprising 40 to 70 % of diphenylmethane diisocyanate and 30 to 60 % of polyphenylmethylene isocyanate, wherein said diphenylmethane diisocyanate comprises more than 50 % by weight of the 4,4'-isomer; (c) water in an amount of 1 to 7 parts by weight per 100 parts by weight of component (a), wherein components (a), (b) and (c) are reacted at an index of 90 to 130.
Patent CA-2275838-A1 (CA)
Title: Blown film extrusion apparatus with improved collapsing frame
Inventor: BUTTEL ULRICH
IPC: B29C48/10
Filed: 1999-06-21
Abstract: An improved blown film extrusion apparatus is provided. The apparatus includes an annular die for extruding a film tube. At least one tube position transducer is provided and located adjacent to the extruded film tube. The tube position transducer transmits interrogating pulses to the extruded film tube and produces a position signal corresponding to a detected position under the extruded film tube. A bubble position control system is provided for receiving and processing the position signal. A valve is provided for varying a quantity of air within the extruded film tube in response to the bubble position control means. This urges the extruded film tube to a desired position. The apparatus further includes a collapsing frame assembly for receiving the extruded film tube and collapsing it. The collapsing frame assembly includes several frame boards. Typically, two opposing main boards and two opposing side boards are provided. A position transducer is provided for detecting the position of at least one of the frame boards. Preferably, this is a non-contact sensor. At least one board position actuator is provided for adjusting the position of at least one of the boards. Typically, the actuator is an electric motor. A board control system is provided for receiving the board position information from the board position transducer and for providing control signals to the board position actuator to maintain at least one of the boards in a predetermined position.
Patent CA-2276553-A1 (CA)
Title: Shrimp processing apparatus and method
Inventor: SHELTON R DOUGLAS
IPC: A22C29/02
Filed: 1999-06-29
Abstract: A shrimp processor removes the undesirable sand vein from a desirable shrimp meat portion and peels away a selectively cut shell. The shrimp processor includes a series of aligned conveyor roller pairs carried within its housing a spaced relation for conveying a headless shrimp from an entrance end of the housing to a downstream exit end. A high speed rotating saw tooth styled cutting blade having a knife edge is carried by the housing and positioned downstream the entrance end between adjacent conveyor roller pairs for cutting a 1/16" wide strip into the dorsal side of the shrimp along the longitudinal axis for exposing the sand vein. In combination with the dorsal strip cut, a second cutting blade cuts through the ventral side of the shrimp for severing the shell into opposing shell sections. A brush positioned further downstream sweeps the sand vein from the cut shrimp. Opposing peeler rollers then receive the shrimp and teeth extending from each roller penetrate the severed shell sections while the cut shrimp is being conveyed downstream, and peel the shell sections from a desirable meat portion of the shrimp while ejecting the deveined and peeled shrimp from the housing.
Patent CA-2276803-A1 (CA)
Title: Network-based caller speech muting
Inventor: ESLAMBOLCHI HOSSEIN
IPC: H04M3/40
Filed: 1999-07-05
Abstract: A switch (26) in a telecommunications network (34) monitors a call placed by a calling party (12) to a called party (14) to detect the presence of prescribed condition, such as the entry by the caller of a self-muting signal, or an excessive level of background noise. Upon detecting the occurrence of the prescribed condition, the switch mutes the outgoing speech of the calling party while passing to the calling party the speech of the called party.
Patent CA-2277434-A1 (CA)
Inventor: CHU CHENG-KANG
IPC: B65D81/02
Filed: 1999-07-06
Abstract: The package case for electric appliances and computers consists of an upper case (3) and a lower case (2) made of a tough thin plastic plate formed to have four sides (21,31) and a bottom, an hollow interior (22, 32) defined by the four sides (21, 31) and the bottom and having a shape to correspond to the shape of a product (13) to be packaged. Each of the four sides (21,31) has a sloped outer and inner wall, and a plurality of curved recesses (211,311) formed in the sloped outer and the inner wall and in the top of each side. The hollow package case placed in a carton (11) may have excellent shock-absorbing function to protect a product packaged therein from damage or hurt caused by shocks or lowering movement in transporting. It is of low cost, handy to handle, reducing pollution to the environment, and having enough shock-absorbing ability for protecting electric appliances and computers.
Patent CA-2278873-A1 (CA)
Inventor: TAKAHASHI MITSUO
IPC: G02B6/38
Filed: 1999-07-26
Abstract: An optical fiber switch of the present invention is composed of a fixed side ferrule assembly and a movable side ferrule assembly. The fixed side ferrule assembly is composed of a multiplicity of lined-up sleeves 12, a fixed side ferrule support plate 10 for two-dimensionally disposing the sleeves 12 on an X - Y plane and supporting them and a multiplicity of fixed side optical fiber ferrules 13 which are inserted into the lined-up sleeves and supported thereby. The movable side ferrule assembly includes X, Y-axis drive mechanism for supporting the movable side optical fiber ferrule 29 and relatively two-dimensionally moving it on an X - Y plane with respect to the fixed side ferrule assembly and a Z-axis drive mechanism A for relatively moving it in a direction (Z-direction) orthogonal to the plane. The movable side optical fiber ferrule 29 is detachably moved to an arbitrary sleeve 12 of the fixed side ferrule assembly.
Patent CA-2279327-A1 (CA)
Title: Apparatus and method for disposal of infectious and medical waste
Inventor: BRICKEN JONATHAN
IPC: B65F1/00
Filed: 1998-01-22
Abstract: An apparatus and method for rendering infectious and medical waste safe through heating and the disposal of said waste includes a body portion with a chamber to receive a container of medical waste. The chamber is connected with a filter for biological materials which escape from the waste container during heating. The contaminants are directed toward the filter by flowing out gas from the container in a predetermined direction as the waste container is heated to a temperature of preferably not less than 350 ~F and preferably not more than 385 ~F to render the waste biologically safe and unreusable.
Patent CA-2287431-A1 (CA)
Inventor: SHALEV SHAUL
IPC: H04B/
Filed: 1998-04-14
Abstract: Procédé de communication entre un appelant et un destinataire via des réseaux de téléphone, comprenant les étapes suivantes: l'appelant transmet un appel à partir d'une ligne de téléphone d'appelant vers une ligne de téléphone de destinataire; le destinataire reçoit l'appel mais ne répond pas, ce qui entraîne la communication d'un code entre l'appelant et le destinataire. L'étape suivante consiste à déterminer un message à partir du code communiqué.
Patent CA-2291222-A1 (CA)
Title: Naphthyridinones for inhibiting protein tyrosine kinase and cell cycle kinase mediated cellular proliferation
Inventor: BARVIAN MARK ROBERT
IPC: A61P9/10
Filed: 1998-08-13
Abstract: Naphthyridinones of Formula (I) are inhibitors of PTKs and cell cycle kinases, and are useful in treating cellular proliferation. The compounds are especially useful in treating cancer, atherosclerosis, restenosis, and psoriasis.
Patent CA-2293080-A1 (CA)
Inventor: JIN WENLIN
IPC: G02B6/02
Filed: 1999-12-23
Abstract: A device for compensating for changes of a center wavelength of a fiber optic grating due to temperature variations comprising a holder including a first and second connector for securing a fiber optic grating, the first connector is fixed, the second connector is movable to increase or decrease a strain in the grating, a source of force applied to the second connector, and the source of force varies with changes in temperature, such that with and increase in temperature the second connector moves toward the first connector to decrease the strain in the fiber optic grating; and, a method for compensating for changes of a center wavelength of a fiber optic grating due to temperature variations.
Patent CA-2296515-A1 (CA)
Title: Burst correlation dispersion mechanism for a packet switched communications system
Inventor: LEMIEUX YVES
IPC: H04L12/56
Filed: 1998-06-26
Abstract: A stream of communications traffic (102) is processed by a time shifting disperser device (108). The device senses the burstiness (212) of the received stream of communications traffic and stores individual frames of the received stream of communications traffic for a specified time delay (204) calculated as function of the sensed burstiness.  Following the calculated delay (214), the frame traffic is clocked out (206) from the device (102) to be combined with (added to) (110) other streams of communications traffic for transport over a shared media communications link (114). In instances where each of the plural streams of communications traffic are processed by an associated disperser device, individual time delays are calculated as function not only of the sensed burstiness but also of a delay determined by a transport network management (operation and maintenance) system (116) from noted correlations in bursts between the multiple streams of communications traffic. Coordination of the time shifting operation thus occurs so as to reduce burstiness correlation between the multiple streams of communications traffic.
Patent CA-2297476-A1 (CA)
Title: System for detection of dental tartar, e.g. subgingival tartar
Inventor: KARAZIVAN NAIM
IPC: A61B1/24
Filed: 2000-01-21
Abstract: A dental tartar detection system, especially for detection of subgingival tartar, comprises a probe adapted to be displaced adjacent a tooth and for receiving wavelengths thereat, an illumination system for providing light adjacent the tooth for the probe, and an analysis system for providing a signal to an operator of the probe when any of said wavelengths fall within one or more predetermined range of wavelengths. Typically, the detection of tartar is achieved on the basis of the possible colours that tartar can have such that the aforementioned one or more predetermined range of wavelengths cover wavelengths associated with colours of tartar.
Patent CA-2297877-A1 (CA)
Inventor: SCHEHADE TEWFIK
IPC: H02G7/22
Filed: 2000-02-03
Abstract: A ground wire for a power transmission system has a plastic tube to carry a bundle of optical fibers. The plastic tube is clad with a metal strip, preferably aluminum, and is supported by a set of wire strands disposed about the tube.
Patent CA-2301379-A1 (CA)
Inventor: MURO GIICHIRO
IPC: B25B23/04
Filed: 2000-03-20
Abstract: A successive screw driving attachment that is used by being connected to a electric screwdriver D, wherein a driver unit 2 has a screw feed mechanism 3 that is slidable in the drive direction of a screw S, the screw feed mechanism 3 is provided with a screw feeder 20 comprising a screw feed prong 15 that successively feeds screws S to the driving position of a bit 8, and the screw feeder 20 is structured such that the next screw S is instantly fed to the driving position.
Patent CA-2301466-A1 (CA)
Title: Flexible razor assembly and cartridge
Inventor: RICHARD PAUL D
IPC: B26B21/14
Filed: 2000-03-15
Abstract: A flexible razor cartridge and assembly are provided. The razor cartridge includes at least one longitudinally arranged flexible beam biased to facilitate a flexed cartridge to return to its at rest position.
Patent CA-2301719-A1 (CA)
Inventor: REINER RICHARD S
IPC: D21C9/10
Filed: 1998-09-04
Abstract: A method of delignifying lignocellulosic fibers is disclosed. In one embodiment, the method comprises the steps of combining a polyoxometalate complex with aluminum heteroatom of the formula [Al1VmMonWoNbpTaq(TM)rOs]x-where 1 is 1-6, m is 0-18, n is 0-40, o is 0-40, p is 0-10, q is 0-10, r is 0-9, and TM is a d-electron-containing transition metal ion, where l+m+n+o+p+q 4, and s is sufficiently large that x > 0, with a lignocellulosic pulp, wherein the pH of the combination is between 6 and 11 and the consistency of the combination is 1-20 %; and heating the combination in a temperature-controlled and pressure-controlled vessel under conditions of temperature and time wherein the polyoxometalate is reduced and delignification occurs.
Patent CA-2305893-A1 (CA)
Title: Use of maduraphthalazine derivatives as inhibitors of proinflammatory cytokines
Inventor: ROEMER ERNST
IPC: A61P27/14
Filed: 2000-04-17
Abstract: Use of maduraphthalazine derivatives as inhibitors of proinflammatory cytokines The maduraphthalazine derivatives of the formula (4)   are able to inhibit the effect of the cytokines interleukin-2, interleukin-4 and interleukin-5 and are suitable for the production of pharmaceuticals.
Patent CA-2307121-A1 (CA)
Title: Dofetilide polymorphs
Inventor: NEWBURY TREVOR JACK
IPC: C07C311/08
Filed: 1998-10-09
Abstract: The invention relates to the substantially pure dofetilide polymorphs P162, P162a and P143, and to processes for the preparation of, compositions containing and to the uses of, such polymorphs.
Patent CA-2307679-A1 (CA)
Inventor: CREAGAN CHRISTOPHER COSGROVE
IPC: D04H1/42
Filed: 1998-10-30
Abstract: There is disclosed a nonwoven fabric suitable for use as, for example, an intake/distribution material for personal care products, made from nonwoven fabric where the fabric is made from directly formed, mixed size fibers. The fibers may be conjugate fibers. The fabric may have zones having larger fibers and zones having smaller fibers providing a means to vary the web properties, such as permeability, or the mixed size fibers may be uniformly distributed. The fibers may also be crimped. The process for making such a material is also disclosed. A zoned fiber fabric can provide rapid intake of an insult because of the placement of the high permeability zone in the insult target area and can also provide good distribution through the lower permeability but higher capillarity end zones.
Patent CA-2307887-A1 (CA)
Inventor: FLANAGAN JOHN
IPC: A61K9/36
Filed: 1998-10-30
Abstract: A tablet coating comprising gellan gum is disclosed along with a process which comprises admixing gellan gum and water under effective shear conditions to prepare an aqueous gellan gum coating composition thereof whereby the aqueous gellan gum coating compositition is applied in an adherent fashion to a placebo or a tablet containing a pharmaceutical to form a gellan gum coated placebo or gellan gum coated active drug.
Patent CA-2308170-A1 (CA)
Title: Masked digital signatures
Inventor: VANSTONE SCOTT A
IPC: G09C1/00
Filed: 1998-11-10
Abstract: The present invention relates to digital signature operations using public key schemes in a secure communications system and in particular for use with processors having limited computing power such as "smart cards". This invention describes a method for creating and authenticating a digital signature comprising the steps of selecting a first session parameter k and generating a first short term public key derived from the session parameter k, computing a first signature component r derived from a first mathematical function using the short term public key, selecting a second session parameter t and computing a second signature component s derived from a second mathematical function using the second session parameter t and without using an inverse operation, computing a third signature component using the first and second session parameters and sending the signature components (r, s, c) as a masked digital signature to a receiver computer system. In the receiver computer system computing a recovered second signature component s' by combining a third signature component with the second signature component to derive signature components ( ~, r) as an unmasked digital signature. Verifying these signature components as in a usual ElGamal or ECDSA type signature verification.
Patent CA-2313201-A1 (CA)
Inventor: PRESTON KEITH ROBERT
IPC: G06F17/28
Filed: 1998-12-16
Abstract: Apparatus for input into a data processing system, comprising input means, processing means, storage means and graphical display means, in which said input means comprises input means arranged to input a free-form source document and said processing means is arranged to parse said source document to locate semantically meaningful entities therein and to store corresponding content data in said storage means; characterised in that said graphical display means is arranged to generate a visual representation of said source document in which said semantically meaningful entities are represented by pictorial elements.
Patent CA-2313976-A1 (CA)
Title: Eyeglass device having auxiliary frame
Inventor: CHAO DAVID YINKAI
IPC: G02C9/00
Filed: 1998-04-24
Abstract: An eyeglass device includes a primary frame having two side studs. The studs each has an opening. An auxiliary frame for disposing in front of the primary frame includes two sides each having a hook member for extending over the stud and for engaging with the opening and for securing the auxiliary frame to the primary frame. The studs each include a magnet secured in the bottom portion of the opening and the hook members are made of magnetic material for engaging with the magnets and for securing the auxiliary frame to the primary frame.
Patent CA-2317011-A1 (CA)
Title: Externally heated hot-runner nozzle with resistance wire
Inventor: SCHEFFLER ANDREAS
IPC: H05B3/46
Filed: 1999-01-08
Abstract: The invention relates to an externally heated hot nozzle (1), especially a hot nozzle for producing injection moulded shaped parts, comprising a resistance wire (2) which consists of an inner electrical heat conductor (3), a ceramic insulating intermediate layer (4) and an outer metal sheath (5). Said resistance wire (2) has two end areas (6) to which a heating voltage can be applied and an intermediate section (7) in the form of a heating coil which corresponds to the circumference of the hot nozzle. The resistance wire (2) is characterised in that with an external diameter of 1.5-2.5 mm, the two end areas (6) are larger than the intermediate section (7) with its external diameter of 1.0-1.8 mm.
Patent CA-2319085-A1 (CA)
Title: Novel therapeutic agents for macromolecular structures
Inventor: OARE DAVID
IPC: C07K1/04
Filed: 1999-06-07
Abstract: Disclosed are novel multibinding compounds (agents) which bind macromolecular structures including cellular, extracellular, and microbial components derived from vectors, viruses, fungi, yeasts, bacteria, and the like. The compounds of this invention comprise a plurality of ligands each of which can bind to such macromolecular structures thereby modulating the biological processes/functions thereof. Each of the ligands is covalently attached to a linker (framework) to provide for the multibinding compound. The linker is selected such that the multibinding compound so constructed demonstrates increased modulation or disruption of the biological processes/functions of cell as compared to the aggregate of the individual units of the ligand.
Patent CA-2319610-A1 (CA)
Inventor: GINZBURG VLADIMIR B
IPC: B21B37/28
Filed: 2000-09-14
Abstract: A method for hot rolling and cold rolling metal strip to a finish strip thickness, profile and flatness in a series of rolling mills each having roll bending and roll crossing capabilities to effect a plurality of roll gap profiles. A control method utilizing mathematical models of the roll gap profiles and strip profile is used to select and set the roll bending and roll crossing to a preferred configuration based on secondary effects of possible combinations so as to produce finished metal strip having desired thickness, profile and flatness characteristics.