baber/WOPTO huggingface dataset:
Patent CA-2240911-A1 (CA)
Title: Improved screening apparatus
Inventor: YOUNG LONN M
IPC: B07B1/46
Filed: 1998-06-17
Abstract: This improved screening apparatus for sorting various size aggregates utilizes a screen made of polyurethane having two sets of perpendicular evenly spaced parallel webs each of which enclose a wire provided for reinforcement. If desired, the reinforcing wires can be single or multiple through either one or through both sets of webs. Web segments extend between web intersections. Areas enclosed by opposed adjacent web segments provide for the screen openings. This area can contain either a single hole or a plurality of holes to provide a number of different screen sizes. The holes increase in cross-section from the screen aggregate input side to the output side to eliminate or greatly minimize particles wedging within the holes. Backing bucker bars of various widths attached to the lower side of the screen provide a predetermined screen cross-section when their lower edges are supported horizontally. Hooks attached to opposite sides of the screen by bolts, arranged to engage mating mounting brackets, permit applying varying tension to the screen by tightening nuts which secure the bolts.
Patent CA-2241608-A1 (CA)
Title: Mixing liquified gases
Inventor: GARRETT MICHAEL ERNEST
IPC: B01F23/10
Filed: 1998-06-25
Abstract: A method of and apparatus for mixing two cryogenic liquids comprising introducing a first amount of first cryogenic liquid into a vented vessel (18), closing the vent(s) and introducing a second amount of a second cryogenic level into the closed vessel (18) at a level above the surface of the first cryogenic liquid in the vessel, the second cryogenic liquid being of greater density or of greater density and having a higher boiling point temperature than the first cryogenic liquid, thereby to produce a substantially homogeneous cryogenic liquid mixture of predetermined composition.
Patent CA-2243289-A1 (CA)
Title: Low density rigid polyurethane foams having improved substrate adhesion characteristics
Inventor: COLEMAN ROBERT S
IPC: C08J9/14
Filed: 1998-09-02
Abstract: The present invention relates to polyurethane foams employing an imidazole compound wherein the polyurethane foams have enhanced substrate adhesion characteristics at relatively low mold temperatures. Additionally, the present invention relates to resin compositions employed in the polyurethane foams and methods of producing polyurethane foams employing the resins.
Patent CA-2248043-A1 (CA)
Inventor: LINDBECK ALINE C
IPC: C07F7/18
Filed: 1997-03-03
Abstract: A process of protecting a 1,2- or 1,3-aminoalcohol for reductive amination coupling is provided. The alcohol is protected with trimethylsilyl chloride.  Trimethylsilyl protected norepinephrine derivatives useful in the preparation of arbutamine are also provided.
Patent CA-2250644-A1 (CA)
Title: Spring biased rotary air valve
Inventor: SMITH RODNEY F
IPC: F16K11/085
Filed: 1998-10-14
Abstract: There is provided a low profile valve assembly for controlling flow of air and the like. The valve assembly includes a housing defining inlet and outlet ports and a valve operator located within the housing. The operator includes a body portion seated in the housing with an axis of rotation and defining an internal passage with inlet and outlet ends. An actuator rotates the body portion a first predetermined distance to a fill position to allow flow through the internal passage and a second predetermined distance opposite the first direction to a vent position to allow flow to vent from the valve assembly through the outlet end. A spring extends from the valve operator adjacent the body portion between the axis of rotation and the valve housing. The spring extends partially about the axis of rotation to bias the body portion to an off position to substantially prohibit flow through the valve operator when the body portion is not being actuated to the fill and vent positions. The spring operates substantially within an internal space in the operator about the axis of Potation. The valve assembly includes an orifice to reduce volume flow through the valve assembly and an exhaust passage portion to reduce flow pressure between the inlet and outlet ends.
Patent CA-2256530-A1 (CA)
Title: Brominated polystyrene having improved thermal stability and color and process for the preparation thereof
Inventor: DEVER JAMES L
IPC: C08F8/20
Filed: 1997-05-30
Abstract: In a process for the suppression of backbone halogenation during the bromination of polystyrenes comprising the step of pretreating a solution of a polystyrene reactant comprising from about 5 to about 20 percent by weight of a polystyrene reactant, in a halogenated hydrocarbon solvent with at least about 0.1 percent by weight of an additive to suppress halogenation of the polystyrene backbone prior to brominating the polystyrene in the presence of a catalyst; adding a metal halide bromination catalyst to the solution, capable of effecting bromination of the ring without causing cross-linking of the polystyrene;  adding to the solution from about 1 to about 3.4 moles of a brominating agent, per mole of polystyrene repeating units; reacting the polystyrene reactant with the brominating agent at a reaction temperature of from about -20 °C to about 50 °C, and isolating the brominated polystyrene. A brominated polystyrene is also provided having a backbone halogen content of less than about 750 ppm and, a .DELTA.E  color as low as about 5.
Patent CA-2257313-A1 (CA)
Title: Process for the preparation of hydrophobic/ hydrophile ab block copolymers
Inventor: RICHTER DIETER
IPC: C09K23/00
Filed: 1997-05-30
Abstract: The invention relates to a process for the preparation of hydrophobic/  hydrophile AB block copolymers in which block A comprises a monomeric unit, a being a conjugated diene and block B comprises a monomeric unit, b being an epoxyde. It also relates to the AB block polymer synthesised by the production process, and micellar systems which are produced from the AB block polymer. According to the invention, synthesis of the AB block polymer occurs in two stages, the first stage being preparation of the block A in an apolar solvent, and the second stage being preparation of the block B in a polar solvent.
Patent CA-2258488-A1 (CA)
Inventor: PAVAN MARIO
IPC: A23L19/18
Filed: 1997-10-20
Abstract: A method for the continuous production of semifinished parts for threedimensional snacks made from potatoes, cereals or the like, comprising, after preparing two layers (10, 11) of a gelled semifinished compound of the components and/or other starchy ingredients, the step of cutting the layers in consecutive segments (12) along parallel lines with cutting edges which act with a relative motion constituted by a translatory motion which is substantially perpendicular to a portion to be cut, combined with a translatory motion which is parallel to the cutting lines. The method also includes a step in which the layers (10, 11) are superimposed and die-cut with suitable punches, separating a grid-like skeleton (35) from the snacks, each snack being formed by two perimetrically joined layers.
Patent CA-2259224-A1 (CA)
Title: Phenylalamine derivatives as integrin inhibitors
Inventor: RADDATZ PETER
IPC: A61P7/02
Filed: 1997-06-23
Abstract: Compounds of formula (I) wherein X, Y, Z, R1, R2, R3 and R4 have the meaning stated in claim 1, with the proviso that at least one element chosen from the group X, Y, Z must be CH2, as well as their physiologically harmless salts, can be used as integrin inhibitors, particularly for prophylaxis and treatment of circulatory diseases, in case of thrombosis, heart infarct, coronary heart diseases, arteriosclerosis, osteoporosis, in pathological processes which are maintained or propagated by angiogenesis, and in tumor therapy.
Patent CA-2261031-A1 (CA)
Title: Certain substituted benzylamine derivatives; a new class of neuropeptide y1 specific ligands
Inventor: HUTCHISON ALAN
IPC: C07D295/155
Filed: 1997-07-18
Abstract: This invention encompasses compounds of formula (I) and the pharmaceutically acceptable salts thereof wherein X1, X2, X3 represent organic or inorganic substituents, n is 1, 2, or 3, m is 2, 3, or 4, R1-R4 are hydrogen or organic substituents, and B is nitrogen, carbon, sulfur or oxygen, useful in the diagnosis and treatment of feeding disorders such as obesity and bulimia and cardiovascular diseases such as essential hypertension and congestive heart failure due to the binding of these compounds to mammalian Neuropeptide Y1 receptors.
Patent CA-2262100-A1 (CA)
Inventor: RIENER KARL STEFAN
IPC: F41A17/06
Filed: 1997-07-25
Abstract: The invention concerns an installation for securing a firearm against unauthorized removal and/or firing, as well as for securing and/or storing objects against unauthorized removal, comprising a locking device (9, 10; 14) and an identification device (11, 16). The identification device (11, 16) is designed for wireless exchange at least of unmistakable identification codes (30, 36), and consists of at least one sending and/or receiving unit (18, 19, 20) allocated to an authorized user and another one allocated to the identification device (11, 16). At a distance or over a range of distances between the sending and/or receiving units (18, 19, 20) of 0 to 1,000 mm, but preferably 0 to 50 mm, and matching identification codes (30, 36) of the user's sending and/or receiving unit (19) and the identification device's (11, 16) sending and/or receiving unit (18, 20), the locking device (9, 10; 14) is de-activated by the identification device (11, 16).
Patent CA-2264483-A1 (CA)
Title: Method for recombinant adeno-associated virus-directed gene therapy
Inventor: WILSON JAMES M
IPC: A61K38/22
Filed: 1997-09-04
Abstract: A method of prolonging gene expression by reducing immune response to a recombinant adeno-associated virus (AAV) bearing a desired gene administered into the muscle of a mammal is described.
Patent CA-2267319-A1 (CA)
Inventor: CHIANG YET-MING
IPC: H01M10/0565
Filed: 1997-10-10
Abstract: Solid battery components are provided. A block copolymeric electrolyte is non-cross-linked and non-glassy through the entire range of typical battery service temperatures, that is, through the entire range of at least from about 0 ~C to about 70 ~C. The chains of which the copolymer is made each include at least one ionically-conductive block and at least one second block immiscible with the ionically-conductive block. The chains form an amorphous association and are arranged in an ordered nanostructure including a continuous matrix of amorphous ionically-conductive domains and amorphous second domains that are immiscible with the ionically-conductive domains. A compound is provided that has a formula of LixMyNzO2. M and N are each metal atoms or a main group elements, and x, y, and z are each numbers from about 0 to about 1. y and z are chosen such that a formal charge on the My, Nz portion of the compound is (4-x). In certain embodiments, these compounds are used in the cathodes of rechargeable batteries. The present invention also includes methods of predicting the potential utility of metal dichalcogenide compounds for use in lithium intercalation compounds. It also provides methods for processing lithium intercalation oxides with the structure and compositional homogeneity necessary to realize the increased formation energies of said compounds. An article is made of a dimensionally-stable, interpenetrating microstructure of a first phase including a first component and a second phase, immiscible with the first phase, including a second component. The first and second phases define interphase boundaries between the, and at least one particle is positioned between a first phase and a second phase at an interphase boundary.  When the first and second phases are electronically-conductive and ionically-conductive polymers, respectively, and the particles are ion host particles, the arrangement is an electrode of a battery.
Patent CA-2267380-A1 (CA)
Title: Disposable absorbent article having a profiled absorbent structure being capable of self-shaping in use
Inventor: TAMBURRO MAURIZIO
IPC: A61F13/534
Filed: 1997-10-02
Abstract: This invention is a disposable absorbent article (20) for wearing adjacent a body discharge area having a longitudinal centerline, and a lateral centerline orthogonal thereto; and defining longitudinal and lateral directions, respectively. The disposable absorbent article (20) comprises a liquid pervious topsheet (24), a backsheet (26) joined to said topsheet (24), and an absorbent core (28) intermediate the backsheet (26) and the topsheet (24). The absorbent core (28) comprises an expanding layer (46) for expanding the article (20) into a tridimensional structure while being worn by a user. The expanding layer (46) is activated by body fluids, and has a predetermined profile in Z direction in the dry state prior to use. The expanding layer (46) is capable, upon activation by body fluids, of expanding into the predetermined wet profile.
Patent CA-2269284-A1 (CA)
Title: Selecting a communications channel for a mobile station based on handover intensity
Inventor: BERGKVIST BENGT
IPC: H04W36/04
Filed: 1997-10-15
Abstract: A threshold limit representing the number of handovers allowed to be performed by a mobile station (140) within a predetermined period of time is assigned to a serving mobile network (130). In case a fast moving mobile station (140) exceeds the prescribed number of handovers, a cell selection in accordance with the hierarchical cell location method is overruled. Instead, a cell selection in accordance with the normal cell location method is implemented to reduce the number of future handovers by the fast moving mobile station (140).
Patent CA-2270536-A1 (CA)
Title: Hoppers with applied motion to promote flow
Inventor: JOHANSON JERRY R
IPC: B65D88/66
Filed: 1997-11-03
Abstract: An improvement to a hopper (1) to promote the flow of solid particulate material includes mounting one or more walls (3) of the hopper for limited oscillatory motion in a direction parallel to the wall and perpendicular to the desired flow direction, and then providing an actuator (6) connected to the remainder of the hopper (1) to impart such motion to the wall.      The relative motion between the moving wall (3) and the particulate material effectively rotates the friction force to the direction of relative motion, leaving the friction in the desired flow direction approaching zero. As a result, downward flow can occur on walls that are only shallowly inclined. The improvement is applicable to hopper-like structures in railroad cars and ships, where it facilitates discharge onto moving conveyors.
Patent CA-2271909-A1 (CA)
Title: Board game for teaching fundamental aspects of personal finance, investing and accounting
Inventor: KIYOSAKI ROBERT T
IPC: A63F3/04
Filed: 1997-11-14
Abstract: A board game for teaching the principles of personal finance whereby significant wealth may be accumulated includes a playing board having a first, Rat Race, track and an entirely separate second, Fast Track. Each player begins the game on the Rat Race track and is provided with a Game Card to track his/her finances. The Game Card is configured as a combined Income/Balance Sheet, and basic accounting rules of personal finance are carefully followed in updating the Game Card while a player progresses along the Rat Race according to the roll of die. The Rat Race track includes spaces on which a player can land which presents unexpected financial obstacles, but the Rat Race also includes spaces which present financial opportunities. By prudently investing as opportunities arise, a player may obtain passive income in addition to a salary. Once a player's passive income exceeds his/her expenses, the player moves to the Fast Track for further play. On the Fast Track, a player enjoys the greatly improved life of one who has accumulated significant wealth. However, provision is made for unexpected problems in various Fast Track spaces along which a player moves. Thus, a player's ongoing financial condition while on the Fast Track is also carefully updated using basic accounting principles of personal finance. The game is played in accordance with formal rules which include provisions for declaring a winner.
Patent CA-2283818-A1 (CA)
Title: Method and apparatus for selecting an internet/pstn changeover server for a packet based phone call
Inventor: KEELER KENNETH L
IPC: H04M7/00
Filed: 1998-03-13
Abstract: A method and apparatus for establishing a voice call to a PSTN extension on behalf of a networked client computer, and routing the voice call off of the network, is provided. In a first embodiment, the apparatus comprises a storage medium having stored therein a plurality of programming instructions for implementing a set of communication services for facilitating establishment of the voice call to the PSTN extension, and an execution unit, coupled to the storage medium, for executing the plurality of programming instructions. The set of communication services include services for soliciting inputs from one or more other apparatuses on one or more operating characteristics associated with the establishment and support of the voice call to the PSTN extension, and selecting either the apparatus itself or one of the other apparatuses to place the voice call to the PSTN extension.
Patent CA-2284317-A1 (CA)
Title: Styrene-butadiene block copolymer
Inventor: ZAMBELLI ADOLFO
IPC: C08F8/04
Filed: 1999-09-29
Abstract: This invention is based upon the unexpected discovery that styrene-butadiene block copolymers having syndiotactic polystyrene (sPS) blocks and cis-1,4-polybutadiene (PBd) blocks can be synthesized by polymerizing styrene and 1,3-butadiene utilizing certain catalyst systems when the polymerization is conducted at a pressure which is within the range of about 10 mm of mercury to about 50 mm of mercury at a temperature which is within the range of about 0°C to about 100°C. This invention more specifically discloses a styrene-butadiene block copolymer which is comprised of (a) syndiotactic polystyrene blocks and (b) cis-1,4-polybutadiene blocks, wherein said cis-1,4-polybutadiene blocks have a vinyl content of up to about 20 percent, wherein the syndiotactic polystyrene blocks have a syndiotactic microstructure content of at least 50 percent, wherein the block copolymer contains at least five syndiotactic polystyrene blocks and wherein said block copolymer has a number average molecular weight which is within the range of about 10,000 to about 700,000.
Patent CA-2289901-A1 (CA)
Title: Secure baby blanket
Inventor: CHWIALKOWSKA MARGARET
IPC: A41B13/06
Filed: 1999-11-17
Abstract: Secure Baby Blanket is meant to safely and securely cover a baby's body, under and over, from the armpit level down. The top edges of the Secure Baby Blanket can be fastened together, allowing a snug fit at the armpit level. Secure Baby Blanket prevents a baby from uncovering itself while kicking or moving its body, reducing the need of frequent checking on a baby. Secure Baby Blanket prevents a baby from pulling the blanket over its face and suffocating. Secure Baby Blanket eliminates the need for safety pins or pieces of string to fasten the blanket, thus eliminating danger of swallowing these items. Secure Baby Blanket provides full mobility of a baby's legs and body, and easy access to check the diaper without disturbing the baby. A baby in the Secure Baby Blanket is ready to be safely lifted up, and it stays securely covered in caregiver's hands.
Patent CA-2291252-A1 (CA)
Title: Coating composition and printing medium
Inventor: WANG ALAN E
IPC: B41J2/01
Filed: 1998-05-15
Abstract: A printing medium comprising a substrate having at least one surface and a coating on the surface wherein the coating comprises: (a) binder comprising:  (1) organic polymer which is substantially free of onium groups, and (2) onium addition polymer consisting essentially of onium-containing mer units derived from addition monomer and onium-free mer units derived from addition monomer of which from 20 to 100 percent by weight is hydrophobic addition monomer, wherein the binder constitutes from 20 to 90 percent by weight of the coating;  and (b) finely divided substantially water-insoluble pseudoboehmite particles which have a maximum dimension of less than 500 nanometers, are distributed throughout the binder, and constitute from 10 to 80 percent by weight of the coating. An aqueous coating composition comprising the above binder and pseudoboehmite particles is also described.
Patent CA-2292363-A1 (CA)
Inventor: PAQUETTE ROSAIRE ROBERT R P
IPC: F24B9/00
Filed: 1999-12-08
Abstract: The purpose of this invention is to provide hot water to campers or anyone who has a wood or oil burning stove. It consists of one compartment that simply fits around the existing chimney pipe therefore allowing it to dispense water by way of a water tap.
Patent CA-2292554-A1 (CA)
Inventor: LEEB KARL-ERIK
IPC: H05K7/20
Filed: 1998-05-12
Abstract: The present invention relates to a method and a device for protecting electronics which are cooled with exterior air. The device comprises an electronic circuit (8) arranged on an electronic supporting means (1) with associated connector (7), which electronic circuit (8) consists of electronic components and/or subcircuits. The device is characterized in that it comprises on the one hand a first casing (2) which surrounds the electronic circuit (8) and towards and over the surface of which a cooling air current (30) is led, on the other hand a second casing (6) which is arranged to cooperate with the first casing (2) so that a connector (7) associated with the electronic circuit (8) is protected from the cooling air current (30) in a space (13, 16) separated from the cooling air current (30). An object with the present invention is to protect electronic equipment with associated connectors from moisture, gas and contaminants in exterior air and thereby obstruct corrosion damage and leakage currents which occur when exterior air is used for cooling.
Patent CA-2294638-A1 (CA)
Title: Dose setting device
Inventor: KLITMOSE LARS PETER
IPC: A61M5/145
Filed: 1998-06-15
Abstract: By a dose setting device for a delivery system wherein a piston rod (6, 9) succesively presses a piston (2) into a cylinder ampoule (1) a dose is set by rotating a second part (9) of the piston rod (6, 9) in relation to a first part (6) which parts are connected by mating threads so that the total length of the piston rod (6, 9) is increased proportionally with the rotation and a point (18) on the second part is moved away from a stop position fixedin relation to a housing (5). The set dose is delivered when said point (18) is moved back to the stop position. The first part (6) can be axially displaced but not rotated in the housing (5), and the second part (9) can be as well rotated as axially displaced. The first part (6) is maintained in abutment with the piston (2) and the second part (9) is coupled to be rotated by a dose setting wheel (20). An injection push button (10) is movable between a projecting position and a pressed home position and has elements (13) acting on the second part (9) to press this part to its stop position.
Patent CA-2297796-A1 (CA)
Title: Ultrasonic atomizing device with liquid circulating line
Inventor: RIFTIN ALEX
IPC: B05B17/06
Filed: 1998-07-15
Abstract: The present invention relates to an ultrasonic device for atomizing liquids.  This device is comprised of at least one atomization unit (1) wherein an approximately upward directed ultrasonic transducer (2) is located at the bottom of each unit (1) and the top of each unit (1) is open (covered by gas), and is characterized by a reservoir (3) connected to all of the units (1), means for maintaining a minimum liquid level in each unit during atomization, a high frequency electric supply connected to each transducer (2), and means (6) for circulating the liquid to be atomized through the reservoir (3), across each transducer (2), and back to the reservoir (3).