baber/WOPTO huggingface dataset:
Patent CA-2139747-A1 (CA)
Title: A drug delivery device and a method of making such device
Inventor: BRONDSTED HELLE
IPC: A61K9/22
Filed: 1993-07-06
Abstract: ABSTRACT OF THE DISCLOSURE      A drug delivery device comprising a polymer matrix and a drug contained in or surrounded by the matrix which polymer matrix is a cross-linked hydrogel matrix comprising a dextranase  degradable  polymer  and  a  cross-linking  agent providing covalent bonded network linkage between the polymer chains.   The device is suitable for delivering drug to the colon.    A method  of  making  the  device  comprising:  (a) dissolving a dextranase degradable polymer in a solvent; (b) adding a cross linking agent capable of cross-linking the polymer with covalent bonds to the solution; (c) allowing the cross-linking agent to react with the dextranase degradable polymer to provide a cross-linked hydrogel matrix, and loading the drug into said solution before or after the reaction between the polymer and the cross-linking agent has finished.
Patent CA-2139858-A1 (CA)
Title: Device for taking measurements, particularly at locations which are not easily accessed
Inventor: JIMENEZ VINCENT
IPC: G01B5/02
Filed: 1993-07-08
Abstract: The device is characterized in that it is substantially comprised of two means (1 and 2), each applicable by one extremity to a corresponding extremity of a length (3) to be measured, and of a means (4) for determining the spacing between the extremities of said means (1 and 2) and therefore the length (3) to be measured, the means (4) being mounted on one (1) of said means (1 and 2). The invention is more particularly applicable to measuring in the builidng industry.
Patent CA-2139988-A1 (CA)
Title: Needle and suture automatic pull-test system
Inventor: DEMAREST DAVID
IPC: A61B17/06
Filed: 1995-01-11
Abstract: An automatic pull-testing apparatus for testing the strength of an armed surgical needle comprises a supporting blade for supporting a suture receiving end of the armed needle and having at least one suture receiving guide therein.  A first gripping device is provided for releasably retaining the armed needle in an oriented position, and for positioning the armed needle at the supporting blade to enable the suture strand depending therefrom to be threaded at the suture receiving guide.  A second suture gripping device grips the suture at a position below the suture receiving guide of the supporting blade.   A slide block counterweighted to a predetermined weight is connected to the second suture gripping device for applying a controlled positive downward force upon the suture strand.  When the first gripping device releases its grip upon the armed needle and the second gripping device and the slide block is released, a positive downward force is applied to the suture strand to perform a minimum pull-test of the armed needle. A destructive pull test is also performed by a device that generates a positive force against the slide block that is sufficient to dislodge the suture from the needle.
Patent CA-2140795-A1 (CA)
Title: Tubular puzzle or toy with rolling members
Inventor: LIEVRE MARTIN R
IPC: A63F7/04
Filed: 1995-01-23
Abstract: In this invention two similar bearings or balls are contained within a sealed tubular capsule. The capsule is comprised of a fully transparent material of a singular rigid substance. The capsule is composed of a lengthier playing field and two shorter storage compartments or traps. Each trap is situated at opposite ends of the playing field and accessed by each ball via an orifice of particular configuration. The configuration is such that the slope of the capsule wall leading out of the trap is at a greater angle to the longitudinal axis than the slope of the capsule wall leading into the trap is to the longitudinal axis. The objective of the game is to get a ball into each trap.
Patent CA-2141839-A1 (CA)
Title: Magnetic resonance arteriography with dynamic intravenous contrast agents
Inventor: PRINCE MARTIN R
IPC: G01R33/28
Filed: 1994-06-03
Abstract: This invention is a method of imaging arteries distinctly from veins using nuclear magnetic resonance imaging in combination with intravenous administration of a magnetic resonance contrast agent.  The contrast agent is intravenously injected in such a way that the arterial contrast concentration is substantially higher than the venous and background tissue concentration for a sufficiently long period of time to acquire the magnetic resonance image. The injection site of the contrast agent is chosen such that it is in a vein which is remote from the artery of interest.  The magnetic resonance contrast agent may be intravenously infused at a variable infusion rate.
Patent CA-2144196-A1 (CA)
Title: Ultra high pressure water-jet cutter
Inventor: TANG XIEMING
IPC: B24C5/02
Filed: 1995-03-08
Abstract: The ultra high pressure water-jet cutter includes an ultra high pressure pump, an accumulator, an abradant jetter, an abradant-control valve, feeding pipes and valves. Its characteristics are that the side wall of the mixing cavity of the abradant jetter has an abradant inlet and an air-flow intake, and the position of the abradant inlet is higher than that of the nozzle of the high pressure water and the position of air-flow intake is higher than that of the abradant inlet. The high pressure water inlet and outlet of the accumulator are located at the side wall of the accumulator and the air-intake pipe of the abradant-control valve has a air-flow regulating valve. The axes of interfaces of emery-inlet and emery-outlet are designed at the same straight line direction.
Patent CA-2144364-A1 (CA)
Title: Shear device for well service tools
Inventor: BURTON JAMES E
IPC: E21B23/00
Filed: 1995-03-10
Abstract: A shear device for a well service tool which is suspended from a sandline into a producing well and which device  includes  a plurality of  shear rods which can be interchangeably connected between coupling members at opposite ends of the shear device and an outer stabilizing sleeve disposed in sealed relation between the coupling members in such a way as to stabilize the rod and assure that tensile loads are applied directly to the shear rod.  Each shear rod is weakened along a shear section intermediately of the rod, or which is offset toward the upper end of the rod in order to reduce the overall length of the rod.
Patent CA-2144592-A1 (CA)
Title: Colorant preparation for producing masterbatches
Inventor: BERNHARDT UWE
IPC: C08L23/02
Filed: 1995-03-14
Abstract: A colorant composition consisting essentially of one or more colorants finely dispersed in an amorphous poly-.alpha.-olefin which  is  composed of  at  least  two different monomers having a butene-1 content of at least 25% by weight and melts at between 70 and 150°C, and a free-flow agent provides the way to dust-free colorant compositions for masterbatch production, the production of compounds and the direct coloration of plastomers and elastomers.
Patent CA-2145808-A1 (CA)
Title: Method and apparatus for thermal cracking of waste plastics
Inventor: TACHIBANA TAKASHI
IPC: C10G1/00
Filed: 1995-03-29
Abstract: Undermelted waste plastics which have not been completely melted from the exterior of a thermal cracking vessel is introduced into a container provided in an upper position within said thermal cracking  vessel and having a net-like opening, allowing the plastics to melt within said container, allowing the resulting plastic melt to drop into the thermal cracking vessel through said net-like opening, the plastic melt is thermally cracked within the thermal cracking vessel.  The resulting vaporous products is introduced into a fractional distillation column to separate high-boiling products from harmful gases, non-condensable hydrocarbon gases  and low-boiling products, the harmful gases, non-condensable hydrocarbon gases and low-boiling products is introduced into a halogen-containing incinerator, while re-heatng the high-boiling products, a portion of the re-heated high-boiling products is recycled to said thermal cracking vessel, the remaining portion is introduced into a zeolite catalyst bed for catalytic conversion, and the residue resulting from the thermal cracking of the waste plastics in the thermal cracking step is withdrawn from the lower portion of the thermal cracking vessel.
Patent CA-2146282-A1 (CA)
Title: On-line analysis for continuous measurement of presence of carryunder in liquid-liquid extraction
Inventor: BOYLE JOSEPH P
IPC: G01N35/00
Filed: 1995-04-04
Abstract: The presence of  carryunder in the  extract phase  recovered from a solvent  extraction tower  is an  indication of  unsatisfactory performance.  The continuous  analysis of  the extract  phase using  a turbidity analyzer to  detect the presence  of two phases,  indicating carryunder permits corrective measures to be taken in tower  operation to reduce or eliminate carryunder.
Patent CA-2148684-A1 (CA)
Title: Bacillus thuringiensis isolates active against lepidopteran pests
Inventor: LIU CHI-LI
IPC: A01N63/23
Filed: 1993-11-23
Abstract: The invention relates to a novel Bacillus thurigiensis strain(s) which solely produces a CryIA(a) crystal delta-endotoxin having a molecular weight of 130,000 daltons and is active against lepidopteran pests. The invention is also related to a spore(s), mutant(s), or crystal delta-endotoxin obtainable therefrom. Furthermore, the invention relates to insecticidal compositions comprising the B.i. strain, spore, mutant or crystal delta-endotoxin of the present invention. The invention further relates to methods of using the insecticidal compositions to control an insect pest(s) of the order Lepidoptera.
Patent CA-2149623-A1 (CA)
Title: Tent with frame
Inventor: DROESCHEL HELMUT
IPC: E04H15/44
Filed: 1995-05-18
Abstract: Collapsible tent (1  to  10,  711  to 716,  1017,  1058, 1059, 1120 to 1122, 1323, 1324) with inner tent (21, 27, 29, 30, 731 to 736, 1037, 1078, 1079, 1140 to 1142) stressed by elastic frame (11 to 20, 70, 721 to 726, 1027, 1068, 1069, 1130 to 1132, 1353, 1354) by bands (105 to 114; 116 to 121; 838, 1212) or strings (100 to 104, 860).       Rods (183;  198; 239,  240;  275, 276; 299,  300) heavy loaded next lateral forks  (177,  217,  219,  220;  801,  802; 841, 842) are stronger.       Frames (11 to 20) either separated in front pole (161 to 170) and two diagonal poles (151 to 160) above with two stops (188)  for main bands (105, 106) from inner tent (21, 27, 29, 30).       Or for similar tents (711  to 716,  1017,  1058,  1059, 1120 to  1122,  1323,  1324),  the  frame  (721  to 726,  1027, 1068,  1069,  1130 to  1132,  1353,  1354)  is separated in a ring-pole (811, 832, 843, 844, 895, 936, 1097 to 1099, 1160, 1161), in the top with crossing-piece (834) or crossing-rod (810, 870); and in rear or back poles (815, 816, 836, 865, 866; 1164, 1165, 1166). Or said ring-pole (895, 936) is only present in the beginning of mounting operation, previously separated in front pole (861, 911) and angular pole (862, 912),  for open tents (905,  946,  1343,  1344) with separate front tent (885, 926, 1333, 1334).     Front  projecting  range  (234)  respective  front  pole (161  to 170, 861,  911) straight with angle piece(s)  (257, 258; 305), cross rod (251). Special frames (11, 12, 13; 713, 715,  716,  1131,  1132,  1353,  1354)  with middle pole  (171, 913, 1168) respectively second frame (173).       Tents (1,  7, 9, 10, 711, 712, 713, 1017, 1058, 1120, 1121, 1122) with front roof (340,  356) held by frame (11, 17,  19,  20,  721,  722,  723,  1027,  1068,  1130,  1131,  1132) over front ventilation (353, 360). Tents (2, 3, 8, 715, 716, 1059,  1323,  1324) with detachable front tent (42, 43, 48; 885, 926; 1333, 1334).       Tents  (711  to  714,  1017,  1058,  1120  to  1122)  with ring-pole (811, 832, 843, 844, 1097, 1098, 1160, 1161) and ridge-string (860) can be stressed easily by hand.       Tents (1017, 1058, 1059) with back rod (1030)  in the top.       Tent (1 to 10, 711 to 716, 1017, 1058, 1059, 1120 to 1122, 1323, 1324) in car (960).
Patent CA-2150308-A1 (CA)
Title: Optimized process for inert fluorinated silanes
Inventor: BOUTEVIN BERNARD
IPC: C07F7/14
Filed: 1995-05-26
Abstract: The present invention provides a method for preparing a fluorinated silane having the formula R14Si (I) or the formula R23Si(R3SiR42)zR3SiR23 (II) said method comprising reacting the corresponding halide-functional or alkoxy-functional silane with lithium aluminum hydride or sodium borohydride to form a hydride-functional silane and then reacting the latter with a vinyl-terminated fluorotelomer or an allyl-terminated fluorotelomer, wherein at least three R1 of said silane (I), at least two of the R2 and at least one R4 of said silane (II) are selected from derivatives of fluorotelomers or fluorocotelomers, z has an average value of 0 to 4 and R3 is a derivative of an alkylene-terminated telechelic divalent telomer or cotelomer.
Patent CA-2152044-A1 (CA)
Title: Chamber arrangement for an inflatable structure
Inventor: BRAUN DIETER
IPC: H01M10/6571
Filed: 1993-12-17
Abstract: A chamber arrangement suitable in particular as a building element for light constructions has first mutually spaced, hollow wall segments subjected to an over-pressure which extend over the whole thickness of the wall.  A part of the intermediate spaces between the first wall segments which begins at the outer side of the wall is filled with second hollow wall segments subjected to an over-pressure and linked to the first wall segments.  Another part of the intermediate spaces between the first wall segments is closed by a wall which forms a bridge between the first wall segments at their ends next to the inner side of the wall and is subjected to a negative pressure.
Patent CA-2154860-A1 (CA)
Title: Oral care products containing zinc-polyamine complex and pyrophosphate
Inventor: DOMKE TODD W
IPC: A61K33/30
Filed: 1995-07-24
Abstract: This invention provides an oral care product which has superior properties for controlling plaque, calculus, oral malodor and gingivitis.  An invention oral care product contains alkali metal pyrophosphate, and a water-soluble zinc-polyamine complex which slow-releases bioavailable zinc ions in an oral cavity environment.  The complex is formed from a polyamine such as polyethylenimine, and a normally water-insoluble zinc compound such as zinc oxide or zinc citrate.
Patent CA-2157390-A1 (CA)
Inventor: FUCHS GERHARD
IPC: C21B7/18
Filed: 1994-07-21
Abstract: In a charge preheater for a metallurgical melting plant with a shaft (5) having blocking members (7, 8) pivotable by an adjuster (6) which contain fingers (9, 10) in mutually parallel and spaced array, the fingers (9, 10) of a blocking member (7, 8) are positioned with a central section in a first rotary bearing (12, 13) and with an outer section taken outwards through an aperture (14, 15) in the shaft wall via a toggle lever mechanism (16. 17) in a second rotary bearing (21, 22) of the frame, and lever arms (18, 19) of at least two toggle lever mechanism are interconnected via link (23) with which an adjuster (6) supported in a third rotary bearing (26, 27) of the frame (2) engages in an articulated way.
Patent CA-2158775-A1 (CA)
Title: Single-polysilicon cmos active pixel
Inventor: ACKLAND BRYAN DAVID
IPC: H01L31/113
Filed: 1995-09-21
Abstract: A method and apparatus for a single-polysilicon active pixel are disclosed.  The single-polysilicon active pixel comprises a photo site located on a substrate for generating and storing charge carriers,  the charge carriers being generated from photonic energy incident upon the photo site and semiconductor  substrate,  a photo gate,  a  transfer transistor and output and reset electronics.  The gate of the transfer transistor and the photo gate are defined in a single layer of polysilicon disposed on the semiconductor substrate.   The source of transfer transistor is a doped region of substrate, referred to as a coupling diffusion, which provides the electrical coupling between the photo gate and the transfer transistor.  The coupling diffusion allows for the transfer of a signal stored in a photo site under  the  photo  gate  to  the  output  electronics  for processing.     The single-polysilicon active pixel may be operated by biasing the transfer transistor to the low operating voltage of the pixel,  for example,  0 volts.   By virtue of the structure of the single-polysilicon active pixel, this mode of operation results in the same timing as if the transfer transistor were  clocked,  but  neither  a  clock  nor  the associated driving circuitry are required.  However, there is little no tendency for image lag as occurs in double polysilicon active pixels when they are operated in a manner which avoids clocking the transfer gate.
Patent CA-2159083-A1 (CA)
Title: Recombinant .alpha.-n-acetylgalactosaminidase enzyme and cdna encoding said enzyme
Inventor: ZHU ALEX
IPC: A61K35/18
Filed: 1994-03-28
Abstract: This invention relates to a recombinant enzyme for use in the removal of A  antigens from the surface of cells in blood products. Specifically, this invention is directed to a recombinant .alpha.-N-acetylgalactosaminidase enzyme from chicken liver, methods of cloning and expressing said recombinant .alpha.-N-acetylgalactosaminidase enzyme and a method of removing A antigens from the surface of cells in blood products using said recombinant .alpha.-N-acetylgalactosaminidase enzyme.
Patent CA-2160554-A1 (CA)
Title: Waterborne core-shell latex polymers
Inventor: LU YING-YUH
IPC: C08F265/04
Filed: 1994-04-29
Abstract: The present invention provides: a core-shell latex composition comprising latex particles, each latex particle comprising: (a) a core comprising a (co)polymer comprising (meth)acrylate ester; (b) a shell, surrounding the core, comprising a copolymer, wherein the copolymer comprises: i) a nitrogen-bearing ethylenically-unsaturated free-radically polymerizable monomer; ii) at least one (meth)acrylate ester of about a C1 to about a C14 alcohol; and iii) an optional ethylenically-unsaturated free-radically polymerizable silane wherein the nitrogen-bearing ethylenically-unsaturated free-radically polymerizable monomer comprises from about 15 to about 60 percent by weight of the shell and further wherein the core comprises from about 40 to about 85 percent of the weight of the total core-shell latex particle. The invention also relates to the use of the core-shell latex composition as a binder or primer for coatings and adhesives.
Patent CA-2160699-A1 (CA)
Title: Ureteral stents, drainage tubes and the like
Inventor: CHEVALIER RAYMOND P JR
IPC: A61F2/04
Filed: 1994-04-26
Abstract: This invention is a ureteral stent (10) of a small tubular size, e.g., 6 French, constructed to be used with a guidewire, and including an enlarged entry end (20) and a dissolvable tip member (28) of satisfactory strength and dimension to be secured in the enlarged entry end of the tube. Stents according to the invention incorporate a dissolvable tip of sufficiently large size drat the dissolvalble tip member can be reliably manufactured and secured to the stent body. The invention also includes medical devices with infortiomational markings (21) formed by application of laser radiation.
Patent CA-2161587-A1 (CA)
Inventor: MCPHERSON ROGER W
IPC: A61B5/103
Filed: 1995-10-27
Abstract: A device and method for the measurement of stiffness of cartilage, specifically intended for arthroscopic use. An tissue softness probe is formed from a stiff shaft and flexible shaft, and strain gauges continuously measure the load in the stiff shaft and the deflection of the flexible shaft as they are displaced into cartilage. The stiff shaft and flexible shaft extend away from a probe body beside each other. The stiff shaft is semi-circular in section at one end with a flat side extending along the shaft at that end, and the flexible shaft is a flat shim that is attached to the flat side of the stiff shaft. Such a design advantageously allows the more or less parallel shafts to be inserted into a human body joint for displacement against cartilage, as for example during arthroscopic surgery. The stiff shaft terminates in a plunger extending at right angles to the stiff shaft, with the tip of the plunger lying, in the rest position, between a forked tip of the flexible shaft. In operation, as the plunger tip is displaced into cartilage, the flexible shaft gradually deflects providing a continuous read out from the strain gauge that is indicative of the relative displacement of the plunger tip as it is displaced into the cartilage. Both shafts are mounted to be enclosed within a retractable hollow cannula extending from the probe body.
Patent CA-2163291-A1 (CA)
Title: Animal resistant garbage bag cart
Inventor: LITTLE KEN
IPC: B65D90/18
Filed: 1995-11-20
Abstract: The present invention provides an animal resistant garbage bag cart for storing and transporting garbage bags. The cart prevents animals from getting into the garbage scattering the garbage and making a mess, and makes it easy to transport the garbage from one location to another. The cart comprises a container having walls of an animal resistant material, an opening in the container for receiving garbage bags therethrough, a covering panel for closing said opening, wheels mounted on the container, supporting the container for movement over a supporting surface, and skis for selectively mounting and dismounting on the container.
Patent CA-2165350-A1 (CA)
Title: A device for automatically controlling the operation of a burner in general
Inventor: TURRIN GIANPIERO
IPC: F23N5/10
Filed: 1995-12-15
Abstract: A device for automatically controlling the operation of a burner comprises an electric control unit which controls the ignition and the flame of the burner and which opens a normally-closed solenoid valve disposed in a first fuel-supply line to the burner, and a pilot burner for the burner supplied by manually-operable second regulation and safety valve means operatively associated. with the control unit and disposed in a second fuel-supply line to the burner, the second valve means being openable manually and being kept open by a current I generated by a thermo-couple in the presence of a flame of the pilot burner when the control unit is de-activated and advantageously being closable by the control unit against the action of the current I when the control unit is activated.
Patent CA-2168361-A1 (CA)
Title: Mixing head for mixing fluids, in particular gases and/or liquids
Inventor: BRAENDLI MARK
IPC: B01F7/00
Filed: 1995-05-18
Abstract: In order to blend fluids, in particular different gases and/or liquids, more thoroughly in a hot or cold environment, a mixing head (1) has axial blades (5) arranged upstream of radial blades (7). In addition, a stationary deflection hood (10) arranged downstream of the radial blades (7) has guiding elements (11) that extend outwards in the direction of rotation.
Patent CA-2169137-A1 (CA)
Title: Liquid applicator with slide ring activator
Inventor: FRAZIER THOMAS G
IPC: A47L23/05
Filed: 1996-02-08
Abstract: An applicator for dispensing liquids which comprises, a thin walled elongated tube like plastic container which has an ampule therein which contains liquid to be dispensed. The container has an opening at one end with a sponge thereon, and a slide ring activator mounted to the tube, which is restrained from longitudinal movement by positioning bumps, which slide ring for applicator activation is rotated about the tube's axis to apply inwardly directed forces on both sides of the ampule to cause it to break, and liquid to flow to the opening, and thence to the sponge from which it is applied.
Patent CA-2171148-A1 (CA)
Title: Sliding Door Closing Device
Inventor: MOHLER THOMAS H
IPC: E05F1/08
Filed: 1996-03-06
Abstract: A device for closing a sliding door comprises a pair of slidable telescoped tubes. The device is secured at its outer ends to the sliding door and to a supporting door frame. A compression spring is located within the tubes urging the sliding door to return by itself from its open to its closed position. A string extends between the end portions of the tubes to prevent the tubes from being separated and a clamping means is adapted for locking the sliding door in any desired open position.