baber/WOPTO huggingface dataset:
Patent CA-2213781-A1 (CA)
Title: Method for the removal of metals from solution by means of activated silica
Inventor: LEMPKA BARBARA MARY-ANN
IPC: C02F1/28
Filed: 1997-08-22
Abstract: The surprising ability of the polysilicate microgels commonly known as "activated silica" to adsorb and to release heavy metals selectively as a function of pH is used in a novel method for separating metals from dilute aqueous solution by means of selective precipitation with and recovery from an activated silica absorbent, selected changes to the pH.  The process is particularly intended for the economic purification of contaminated waste streams to recover valuable but toxic heavy metals from such effluents at a lower cost than hitherto possible, using an activated silica substrate which may be regenerated by alkali treatment.
Patent CA-2215871-A1 (CA)
Title: Freeze drying apparatus and method
Inventor: COPPA NICHOLAS V
IPC: F26B5/06
Filed: 1997-09-16
Abstract: The present invention provides methods and apparatus for freeze drying in which a solution, which can be a radioactive salt dissolved within an acid, is frozen into a solid on vertical plates provided within a freeze drying chamber. The solid is sublimated into vapor and condensed in a cold condenser positioned above the freeze drying chamber and connected thereto by a conduit. The vertical positioning of the cold condenser relative to the freeze dryer helps to help prevent substances such as radioactive materials separated from the solution from contaminating the cold condenser. Additionally, the system can be charged with an inert gas to produce a down rush of gas into the freeze drying chamber to also help prevent such substances from contaminating the cold condenser.
Patent CA-2215982-A1 (CA)
Title: Nodulisporic acid derivatives
Inventor: SHIH THOMAS
IPC: A61P33/00
Filed: 1996-03-15
Abstract: The present invention relates to novel nodulisporic acid derivatives, which are acaricidal, antiparasitic, insecticidal and anthelmintic agents.
Patent CA-2216067-A1 (CA)
Title: Foldable seat having removalbe panels
Inventor: PILLERS MICHELLE J
IPC: A47C7/40
Filed: 1997-09-17
Abstract: A seat (10) is disclosed that includes a seat back (14) hingedly attached to a seat base (12) such that the seat back can be folded from an upright, vertical position to a closed, horizontal position with the lower surface of the seat back overlying the upper surface of the seat base throughout the seat's range of motion. For ready upholstering, in one embodiment, the foldable seat includes a removable seat base panel (20) and a removable seat back panel (22) attached to the seat base and back, respectively.
Patent CA-2218713-A1 (CA)
Title: Electrotransport device and method of setting output
Inventor: LATTIN GARY A
IPC: A61N1/30
Filed: 1996-05-31
Abstract: A two-part electrotransport drug delivery device (20) is comprised of a controller (22) which has a plurality of different electronic outputs. The controller (22) is adapted to be mechanically and electrically coupled to a plurality of different drug-containing units (24). Each drug unit (24) includes a means (40, 42, Rx, Cx) for signaling the controller (22). The signal is read by the controller (22) and a predetermined electronic output is thereby selected and applied through the drug unit (24) in order to deliver the drug contained therein by electrotransport. The signal sent by the drug unit (24) to the controller (22) may be an optical signal (e.g., reflected light), a signal sent by an electro-mechanical connector, an electrical signal (e.g., resistance or capacitance), a magnetic signal or a metal detector sensing signal.
Patent CA-2222076-A1 (CA)
Title: Polypropylene resin compositions
Inventor: TANAKA YASUO
IPC: C08J5/18
Filed: 1997-11-25
Abstract: The polypropylene resin composition of the invention comprises a polypropylene resin and a rubber component in specific proportions. The rubber component comprises an ethylene random copolymer (B1) and a propylene/1-butene random copolymer (B2). The copolymer (B1) is obtained by random copolymerizing ethylene and an .alpha.-olefin of 3 to 20 carbon atoms, and has a specific density, a specific MFR  and a specific crystallinity. The copolymer (B2) has a specific content of constituent units derived from propylene, a specific content of constituent units derived from ethylene, a specific MFR, a specific Mw/Mn and a specific B value (parameter indicating randomness of a copolymerized monomer sequence distribution). The weight ratio of the copolymer (B1) to the copolymer (B2) in the rubber component (B) is in the range of 95/5 to 20/80. The polypropylene resin composition can provide molded products, e.g., films, having excellent heat-sealing properties, low-temperature impact resistance, transparency and blocking resistance.
Patent CA-2222079-A1 (CA)
Title: Gas bomb holding apparatus for industrial vehicle
Inventor: SUZUKI YOSHITAKA
IPC: B66F9/075
Filed: 1997-11-25
Abstract: A gas bomb holding apparatus for industrial vehicles contains a holding device disposed on a rear portion of a vehicle for holding a gas bomb such that it is laid.  The holding device comprises a receiving stand for supporting a gas bomb and arm members mounted rotatably around a shaft in a cross direction of the vehicle for holding the gas bomb between the receiving stand and the arm members.  This holding device has a rear end indicating member for indicating a rear end position of the vehicle to be visually confirmed by a driver.  The driver can confirm the rear end position of the vehicle by means of the rear end indicating member.
Patent CA-2222399-A1 (CA)
Title: Device and method for locating inflamed plaque in an artery
Inventor: BROWN DAVID LLOYD
IPC: A61B5/01
Filed: 1997-12-17
Abstract: A system for locating inflamed plaque in an artery of a patient includes a catheter with an expander mounted at a catheter distal end. An infrared carrier, e.g., an optical fiber is mounted on the catheter with a carrier distalend attached to the expander. A sensor is connected to a carrier proximal end to measure infrared radiation transmitted through the carrier from the carrier distal end. In use, the expander is operable to selectively move the carrier distal end into contact with the arterial wall. Infrared radiation can then be measured to determine the temperature at the arterial wall. Temperatures at various locations can be taken, with elevated temperatures being indicative of inflamed plaque.
Patent CA-2223951-A1 (CA)
Title: Automated bone cement mixing apparatus
Inventor: EARLE MICHAEL L
IPC: A61F2/46
Filed: 1996-06-07
Abstract: A motorized mixer (10) for mixing bone cement for use in attachment of prosthetics and method for using the mixer (10). The mixer comprises a mixing chamber, a liner (30) in the mixing chamber, an impeller (90) within the liner, a motor for driving the impeller (90) and programmable means (16) for regulating the operations of the motor. An impeller (90) for use in a mixer (10) for mixing bone cement having a mixing chamber and means for mixing cement within the chamber that allows the simultaneous exposure of the mixing chamber and the post-cement delivery area to a vacuum source to prevent air from being folded into the cement during mixing and post-mixing transfer as well as aiding in the ease of cement transfer from the mixing chamber to the post-mixing cement collection area.
Patent CA-2224044-A1 (CA)
Inventor: RODENKIRCH NORMAN E
IPC: F01N13/10
Filed: 1997-12-09
Abstract: An exhaust manifold with several inlet ports and a combination of diffuser and nozzle portions associated with each inlet port for producing a high flow rate and a low pressure drop from entry to exit. The diffuser and nozzle portions are in series and designed into the manifold at each inlet port and slightly upstream of the next downstream positioned inlet port.  The diffuser portion decreases the velocity of exhaust gases as they enter the manifold and are then turned substantially ninety degrees into a longitudinal direction of the manifold. This diffuser action slows the velocity and reduces pressure losses as the turn of exhaust flow is accomplished.  The next in series nozzle portion increases the velocity of exhaust gases to cause the flowstream to jump past a neighboring downstream engine exhaust port. Resultantly, the flow through the manifold is improved and the pressure drop decreased which enhances engine performance. Also, the heat rejection and thermal inertia of the manifold is decreased which enhances the earlier heating and light-off of a downstream catalyst of a gas treatment unit.
Patent CA-2224050-A1 (CA)
Title: 4-substituted 5-polycyclylpyrimidine herbicides
Inventor: JACKSON JOHNNY L
IPC: A01N43/54
Filed: 1997-04-03
Abstract: 4-Substituted 5-polycyclylpyrimidine compounds in which the 5-substituent is polycyclic and is attached to the pyrimidine moiety through an aliphatic carbon atom, such as 5-(2,2-dimethylindan-1-yl)-4-methylthiopyrimidine, were prepared and found to possess excellent herbicidal activity. The compounds are especially useful for the control of undesirable vegetation in paddy rice.
Patent CA-2224603-A1 (CA)
Title: Transparent, non-blocking film
Inventor: KNOLL KONRAD
IPC: B32B25/08
Filed: 1997-05-26
Abstract: A film in roll form, especially for packaging foodstuffs as a substitute for PVC film, of 15 to 99.6 wt% of a rubber-elastic styrene-butadiene block copolymer, 15 to 99.6 wt% of a thermoplastic polymer, 0.1 to 10 wt% of an anti-fogging agent, 0.1 to 5 wt% of a primary antioxidant, 0.1 to 5 wt% of a secondary antioxidant and 0.1 to 50 wt% of other auxiliaries. The transverse shrinkage of said film is not more than 3 % after three months' storage.
Patent CA-2228343-A1 (CA)
Inventor: ROBINSON FRANCIS JAMES
IPC: E21B/
Filed: 1998-01-29
Abstract: Disclosed is a reverse circulation drill assembly comprising: a rotation head having portion of a means for supply of drilling fluid to a drill string: a drill string including an outer wear sleeve and inner tube operationally connected to the rotation head and having a drilling fluid cavity disposed between the outer wear sleeve and inner tube; and a swivel assembly providing at least part of the operational connection of said rotation head and the drill string, the swivel assembly comprising: a drilling fluid chamber communicating the rotation head portion of the drilling fluid supply means of the rotation head and the drilling fluid cavity; a sample chamber communicating with the inner tube for recovery of cuttings from the formation, through a sample outlet formed in said sample chamber, during drilling; and means for connection of the swivel assembly to the drill string.
Patent CA-2228462-A1 (CA)
Title: Integrated high pressure fill port and flow controller for cylinder recharger
Inventor: BYRD GARY NEAL
IPC: B01D53/047
Filed: 1998-02-02
Abstract: An apparatus for providing oxygen-enriched air at a first pressure and at a second pressure, the second pressure being greater than the first pressure. The apparatus comprises, in combination, a pressure swing adsorption system and a pressure intensifier. The pressure swing adsorption system for enriching the oxygen content of air has a pressure of at least the first pressure. The pressure swing adsorption system is adapted to provide oxygen-enriched air to a first outlet at the first pressure and to provide oxygen-enriched air to a pressure intensifier at the first pressure. The pressure intensifier pressurizes the oxygen-enriched air and provides the oxygen-enriched air to a second outlet at the second pressure.
Patent CA-2228926-A1 (CA)
Title: Vehicle mounted broom
Inventor: TRUAN JAMES PHILLIP
IPC: E01H1/02
Filed: 1998-02-05
Abstract: A vehicle mounted broom that has a modular construction, improved sweeping action and versatile mounting capabilities. The modular construction allows wings to be attached to the main housing to increase the length of the broom and, if desired, the sweep angle. The broom has uniquely configured brushes that reduce greatly or eliminate. rocking of the brushes with respect to the housing to which they are removably mounted. The versatile mounting system includes mounting brackets fixed to the housing which receive various mounting packages for mounting to different vehicles.
Patent CA-2231200-A1 (CA)
Title: Integral, board-like component and process for its production
Inventor: SCHOCK FRIEDRICH
IPC: B32B33/00
Filed: 1996-07-17
Abstract: With an integral, board-like component, in particular for use as a kitchen working surface, comprising a visible side and a rear side, wherein the visible side comprises a layer consisting of a polymer matrix filled with a first, inorganic filler, its specific density being greater than the specific density of the polymer matrix, it is suggested for the production of the boards in a simple manner and with a good planarity that the filler content of the first filler in the visible side layer be 50 to 90 % by volume, that the rear side comprise a layer which is formed from a polymer matrix filled with a second inorganic filler, wherein the proportion of the polymer matrix in this layer in % by volume differs quantitatively by 20 % at the most from the volume content of the polymer matrix in the visible side layer and wherein the specific density of the second filler is <= 0.6 g/cm3.
Patent CA-2233368-A1 (CA)
Title: Method for preparing a biodegradable filter material
Inventor: SCHMIDT HARALD
IPC: B29C48/345
Filed: 1996-09-27
Abstract: The invention concerns a biodegradable filter tow or filter material (1) of renewable raw materials for use as tobacco filter elements for cigarettes, cigars or pipes, as well as a process for its manufacture. Fibres, foils or foams produced in an extrusion process and consisting of biopolymers based on thermoplastic starch and their polymer mixture are processed to form the filter tow or filter material according to the invention. The advantages of the invention reside in the use of biodegradability of the natural biopolymer filter material, a pollutant-reducing aroma-enhancing filter effect and an economical manufacturing method.
Patent CA-2234992-A1 (CA)
Title: Center drive unwind system
Inventor: FORTUNA RUDOLPH S
IPC: B65H19/16
Filed: 1998-04-14
Abstract: A center driven unwind system including a pair of horizontally spaced-apart side frames defining the beginning of a path of travel of the web being unwound from a parent roll for processing by a rewinder, a U-shaped arm structure pivotally mounted adjacent the U-shape base on each side frame with each arm of the U-shape adjacent the arm free end being equipped with a retractable chuck for insertion into a parent roll core, a variable speed drive operably associated with each chuck and adapted to develop an increasing rotational speed characteristic in the chuck as a parent roll carried by the chuck is unwound, a core table positioned adjacent the frame and adapted to receive from the U-shaped arm structure a partially unwound parent roll, the  core  table  being  equipped with  a  cradle  for rotatably supporting the partially unwound roll after the chucks  have  been  retracted  therefrom,  sensors provided on the U-shaped arm structure for positioning the chucks for introduction into the core of a parent roll  to  be  subsequently  unwound,  and  a  thread-up conveyor  adjacent the core table  for  conducting  a leading edge portion of a web from the parent roll to be subsequently unwound toward the tail end portion of a web  from  the  partially  unwound  parent  roll  for simultaneous introduction into a rewinder.
Patent CA-2235341-A1 (CA)
Title: Producing well artificial lift system control
Inventor: HERSHBERGER MICHAEL D
IPC: E21B47/04
Filed: 1996-11-01
Abstract: A method of producing gas through liquid level detection in an oil or gas well uses various types of artificial lift systems (10) that include subsurface gas lift, beam pumps, progressive cavity pump and submersible pumps. The artificial lift systems (10) are controlled in response to a known liquid level (34) within the wellbore to prevent the well from pumping off and damaging the artificial lift system (10) or from reducing the liquid level (34) in the wellbore to an unnecessarily low level to thereby increase the energy required by the artifical lift system (10) to remove the liquid (32) from the wellbore. The liquid level detection method includes the detection of at least the pressure on a side string tube in the wellbore to determine the level of liquid in the wellbore for automated control of liquid removal from the wellbore to be removed to the surface through a production tube to allow improved gas or oil production, increase artificial lift efficiency and to allow for control of the artificial lift system to prevent damage to the system. Another method measures production from the well in conjuction with automated liquid level control to maximize liquid level in the wellbore without interfering with production. A timing method allows for control of the quantity of gas injected during the gas injection cycle of a subsurface gas lift artificial lift system.
Patent CA-2235506-A1 (CA)
Title: Sheath and method of use for a stent delivery system
Inventor: MACKENZIE ANDREW J
IPC: A61F2/82
Filed: 1998-04-20
Abstract: An apparatus and method for deploying one or more stents within a body lumen comprises a substantially tubular sheath configured for slidable movement over a catheter shaft and configured to receive a stent over a flexible, expandable distal portion of the sheath. The sheath may comprise a part of a stent deployment system including a dilatation catheter (such as a balloon catheter), and one or more substantially tubular stents positioned in their delivery configurations over the expandable distal portion of the sheath. The sheath preferably has a proximal portion that is configured so that a user may advance the sheath over the catheter by maneuvering the sheath proximal end. The substantially tubular stent preferably is a radially expandable stent having a delivery configuration and a deployed configuration. When the apparatus is introduced into a body lumen, the sheath is positioned on the catheter shaft such that the sheath distal portion bearing the stent (12) is proximal of the catheter expandable member (e.g., balloon). Thus, the catheter expandable member may be used to dilate the body lumen without deploying the stent. After dilatation is completed, the sheath is advanced until the stent is positioned around the expandable member which is then expanded, thereby radially expanding and deploying the stent or stents.
Patent CA-2235797-A1 (CA)
Inventor: HUMBLOT FRANCIS
IPC: C07B63/02
Filed: 1998-05-14
Abstract: Pour purifier un liquide organique quasi anhydre, on le met en contact avec une ou plusieurs résines échangeuses de cations, cette résine ou l'une au moins de ces résines étant une résine de type sulfonique sous forme -SO3H ou SO3NH4 à base d'un copolymère polystyrène-divinylbenzène dont le taux de divinylbenzène représente de 50 à 60% en poids du copolymère. Ce procédé permet plus particulièrement d'éliminer les impuretés métalliques présentes dans un tel liquide organique.
Patent CA-2236121-A1 (CA)
Inventor: H RING ERWIN
IPC: B29C48/67
Filed: 1998-04-29
Abstract: A multi-shaft screw-type extruder comprises - a casing; - two parallel and partially intersecting casing bores; - two shafts disposed in the casing bores and drivable to rotate in the same direction; - screw elements non-rotatably mounted on the shafts; and intermeshing kneading disks, which are non-rotatably mounted on the shafts and the respective crest portions of which are reduced in relation to the disk width for mixing-and-scraping-studs to form, which are located on the periphery. The mixing-and-scraping-studs on each kneading disk are axially misaligned relative to each other such that their peripheral faying surfaces jointly cover the entire disk width.
Patent CA-2238025-A1 (CA)
Title: Form/label combination and process
Inventor: FARROW DAVID L
IPC: B41L1/26
Filed: 1998-07-22
Abstract: A form/label combination providing a label and multiple receipts, which may be constructed from two continuous sheets of paper in one pass through each of a coater, and a label press. The first sheet of the form/label combination provides an adhesive label on the left side, and a receipt on the right. The label is releasably attached to the left side of the second sheet, while the receipt is detachably attached to the right side of the second sheet. Image-transferring means are provided between the two sheets whereby impressions formed on the first sheet are transferred as indicia on the second sheet. A process for manufacturing such a form/label combination is also provided.
Patent CA-2240349-A1 (CA)
Inventor: GODBEY KRISTIN J
IPC: A61K31/19
Filed: 1996-12-19
Abstract: A drug delivery device comprising a carrier and a backing, the backing comprising a nonwoven thermoplastic polymer web having multidirectional elasticity.
Patent CA-2240977-A1 (CA)
Title: Removable trailer hitch ball
Inventor: BELINKY JACOB S
IPC: B60D1/52
Filed: 1998-06-18
Abstract: A removable trailer hitch ball in which a generally spherical configuration hollow ball with opposed upper and lower vertically aligned bore holes for removable attachment to a stud with a cross bore aligned with transversely aligned holes on opposite sides of the hollow ball.  A removable lock pin with a spring loaded detent ball is inserted through the transversely aligned holes of the hollow ball and stud.  The spring loaded detent ball is protruded into a cavity between the side of the stud and the inner wall of the hollow ball to detachably secure the hollow ball onto the stud which may be  integrally  formed at the end of a  drawbar  for detachable connection to a receiver of a trailer hitch. Different size balls may be detachably secured to a given stud.   In one embodiment the stud is formed in a shank integrally at one end of a  drawbar.   The hollow ball  can be  formed into  a  generally spherical configuration from a swagged cylindrical metal tube cut to  length that  is  in  a  split  swagging die having  a mandrel extending inwardly from a bowl in one die to form the vertically aligned bore holes.
Patent CA-2243097-A1 (CA)
Title: A method and apparatus for importing information from a network resource
Inventor: GARDNER DAVID
IPC: G06F17/30
Filed: 1998-07-10
Abstract: Information stored at a resource remotely located across a network is automatically imported according to pre-defined selection criteria, formatted in a form usable by a local processing resource, stored in the formatted form, and provided to the local processing resource for use by it. In one embodiment, a mailing list manager has an import module coupled to a browser. The import module receives a set of user-defined information selection criteria. The import module commands the browser to establish a network connection to a remote network resource containing desired information. When the connection is established, the browser requests information from the remote network resource according to the selection criteria. Information received from the network resource is stripped of unnecessary information, formatted for use by the mailing list manager and stored in a database maintained by the mailing list manager. In a preferred embodiment, the network resource is a Web server with a search page that is coupled to a searchable database of addresses, and the addresses are usable in a mailing list.