baber/WOPTO huggingface dataset:
Patent CA-2003352-C (CA)
Title: Preparation of caprolactam
Inventor: FISCHER ROLF
IPC: C07D201/08
Filed: 1989-11-20
Granted: 1999-05-04
Abstract: Abstract of the Disclosure:  Caprolactam is prepared in a process comprising the following steps: a)   reacting  the  5-formylvaleric  ester  with  liquid ammonia as  reaction medium and hydrogen in the presence of a ruthenium catalyst in liquid phase at from 80 to 140°C under a hydrogen partial pressure of from 40 to 100 bar, b)   replacing the reaction medium ammonia by an aromatic hydrocarbon having a boiling point of from 80 to 240°C which is liquid under the reaction conditions, c)   heating the resulting mixture in liquid phase under superatmospheric  pressure  at  230 350°C  to  form caprolactam, and d)   isolating caprolactam from the resulting reaction mixture.
Patent CA-2008154-C (CA)
Title: Synthesis of a diazido terminated energetic plasticizer
Inventor: AMPLEMAN GUY
IPC: C07C247/04
Filed: 1990-01-19
Granted: 1995-12-19
Abstract: Glycidyl azide polymer is a hydroxy-terminated aliphatic polyether containing alkyl azide groups.  Such a polymer could be used as a plasticizer in composite explosives, gun and rocket propellants.  However, the hydroxyl groups of the polymer react with the isocyanate of the curing agent, thereby eliminating any possible plasticizing effect.  This problem is overcome by producing a diazido-terminated glycidyl azide polymer without terminal hydroxyl groups.  This useful polymer is produced by reacting polyepichlorohydrin with p-toluenesulfonyl chloride in pyridine, and reacting the resulting tosylated polyepichlorohydrin with sodium azide in dimethylformamide.
Patent CA-2010383-C (CA)
Title: Enossal individual tooth implant
Inventor: DURR WALTER
IPC: A61C8/00
Filed: 1989-12-04
Granted: 1997-08-05
Abstract: An implant for an individual tooth including a metal implant post having a fastening head for receiving a removable denture,  the implant post being mounted in a metal  spacing  element  which  is  threaded  in  a  basic structure that is implantable in the tooth.  To hold the spacing element in a fixed,  non-twisting and rotatable position, the element is composed of a base element having a first threaded portion which is received in the basic structure and a second threaded portion of a pitch less than the first threaded portion, which receives a ring element that is threaded thereon and has a shoulder for engaging an upper edge of the basic structure to form a locking arrangement.         There is also described herein a locking tool having  concentric  sleeves  which move  relative  to  one another with the inner sleeve having slots for receiving lugs on the base element and the outer sleeve having lugs or projections to be received in the slots on the ring element so that the ring element can be rotated relative to the base element, which is held by the inner sleeve.
Patent CA-2010738-C (CA)
Inventor: GESSAMAN BILL
IPC: H03M1/60
Filed: 1990-02-22
Granted: 1993-08-17
Abstract: ABSTRACT OF DISCLOSURE      A circuit arrangement reduces the time necessary for a voltage-to-frequency converter to provide a new output  frequency  in  response  to  a  change  in  input voltage levels.   A current source provides additional input current to the input integrating node of the v/f before a conversion is requested.  When a conversion is requested,  the  additional  input  current  effectively provides  operation  of  the  v/f  at  an  increased frequency, thus speeding the settling process therefor. When the integrator of the v/f is at a predetermined voltage level in a predetermined operating cycle, the current  source  is  removed,  thus  terminating  the increased frequency of operation.
Patent CA-2013031-C (CA)
Title: Manually operated air valve and actuator in combination control a hydraulic spool valve for maneuvering heavy equipment
Inventor: HELFENSTEIN JIM
IPC: F15B13/042
Filed: 1990-03-26
Granted: 2001-05-29
Abstract: A proportional remote control having an air regulating controller and an air operated actuator that have matched components to provide a true linear control of the displacement of a valve spool in proportion to lever displacement on the controller.      Minimal displacement of the hand lever applies an initial stepped output pressure to the actuator which moves the spool just short of fluid flow. The controller regulates the air pressure applied to the actuator from the initial stepped pressure to its maximum output in proportion to the displacement of its control lever.
Patent CA-2013180-C (CA)
Title: Winged kite
Inventor: STANKUS MARGUERITE E
IPC: A63H27/08
Filed: 1990-03-27
Granted: 2002-06-18
Abstract: A winged kite (10) comprises an elongated body (12) attached on a bottom side of a flat sheet lift member (14) forming right and left wings (44, 46) and a diverging flat tail (48). An elongated flexible spar extends between respective outer end portions (60, 62) of the right and left wings across the top side of the lift member and a support ring (68) attached to the top side of the lift member at the body supports the body and the lift member from the spar. Leading edge salient portions (70, 72) of the wings curl upwardly about the spare, the amount of curl being substantially affected by wind striking the right and left leading edge salient portions during flight of the kite. A tether is attached only near the front end of the body. The lift member is formed of a main body sheet (40), for forming the wings and tail, and a support sheet (42), which extends along the tail between the wings to a front end portion of the body. In one embodiment, the body is formed by a single sheet folded on itself with a fold area being attached to the bottom side of the lift member between the wings and the tail.
Patent CA-2016341-C (CA)
Inventor: SCHMIDT PAUL H
IPC: G11B11/105
Filed: 1990-05-09
Granted: 1994-03-29
Abstract: Abstract of the Disclosure A low-friction, corrosion-resistant substrate includes a substrate and a macromolecular Langmuir-Blodgett film in coating relationship with the substrate, the film having a multiplicity of macromolecules, each including a hydrophobic end and a hydrophilic end, wherein the hydrophilic end of substantially each macromolecule is bonded to a surface of the substrate and the hydrophobic end of each macromolecule resides at the interface of the film coating and the surrounding air.  The film may also include planar heterocyclic molecules.  A low-friction corrosion-resistant read/write head and/or recording medium includes a Langmuir-Blodgett film in coating relationship with the surface thereof.
Patent CA-2016820-C (CA)
Title: High speed crosslapper
Inventor: FREUND KENNETH STEPHEN
IPC: D01G25/00
Filed: 1990-05-15
Granted: 2001-04-17
Abstract: A crosslapper is disclosed utilizing at least one foraminous transporting belt to permit rapid escape of entrained air during fast operation of wide-bed machinery.
Patent CA-2024034-C (CA)
Title: Railway car
Inventor: KURTZ WILLIAM E
IPC: B61D7/00
Filed: 1990-08-27
Granted: 1995-12-26
Abstract: A railway car suitable for rotary or bottom dump unloading.  The body bolster is fitted with vents to permit a heating of the slope floor at the ends of the car to thaw the lading prior to unloading.
Patent CA-2028868-C (CA)
Title: Composite concrete-beam structure
Inventor: SELBY DAVID A
IPC: E04C3/293
Filed: 1990-10-02
Granted: 2002-04-23
Abstract: A composite beam and concrete structure utilizes a shear transfer bar above the beam. Floor panels may be cast in concrete between the beams rising bowed plywood panels.
Patent CA-2038474-C (CA)
Title: Surface-acoustic-waver filter having a plurality of electrodes
Inventor: SATOH YOSHIO
IPC: H03H9/145
Filed: 1991-03-18
Granted: 1994-09-20
Abstract: A SAW device comprises a substrate, input and output interdigital electrodes provided on the sub-strate alternately to form a row of electrodes, and a pair of open strip reflectors disposed at both ends of the row, the input interdigital electrodes having a first pair number representing the number of pairs of opposing finger electrodes forming the input electrode, the output interdigital electrodes having a second pair number representing the number of pairs of opposing finger electrodes forming the output electrode, wherein the first pair number and second pair number are set different in the adjacent input and output electrodes with a predetermined ratio therebetween, the first pair number is changed in each input electrodes in the row, and the second pair number is changed in each output electrodes in the row.
Patent CA-2045348-C (CA)
Title: Shim of a cable clamp
Inventor: OKURA MASAHIKO
IPC: F16G11/04
Filed: 1991-06-25
Granted: 1993-04-06
Abstract: Abstract A cable clamp shim, wherein a side part thereof is bent at a right angle to the remainder thereof, with the slit being in the remainder portion for holding the sleeve of the clamp, so that the side part of the shim fits closely to the outside surface of the sleeve and thereby eliminates possibility of injury to the worker by the edge of the shim, and improves the positioning security of the shim in the clamping arrangement.
Patent CA-2053741-C (CA)
Inventor: GERONIMI FRANCOIS
IPC: G06F21/79
Filed: 1991-10-18
Granted: 1996-07-16
Abstract: L'invention concerne les circuits intégrés, et notamment les circuits dont on veut assurer la sécurité contre un usage frauduleux. Les circuits concernés sont les circuits à microprocesseur comportant une mémoire de programme, une mémoire non volatile programmable, un port d'entrée sortie, et un registre mémorisant les signaux de détecteurs de conditions anormales. Ce registre est accessible par le microprocesseur. On prévoit des moyens pour vérifier l'état du registre immédiatement avant toute opération d'écriture ou effacement de la mémoire programmable, et immédiatement avant toute transmission de donnée vers l'extérieur par le port d'entrée-sortie, et des moyens pour interrompre le fonctionnement du microprocesseur si la vérification fait apparaître des conditions anormales.
Patent CA-2059028-C (CA)
Title: Method for cleaning electrical connectors
Inventor: ENGLERT PAUL JOSEPH
IPC: H05K3/26
Filed: 1992-01-08
Granted: 1996-07-16
Abstract: Disclosed is a method for cleaning solder flux from connectors. A first solution comprising a monobasic ester is applied to the connectors. A second solution, which can include a solvent for a lubricant, is then applied to displace the first solvent.
Patent CA-2060408-C (CA)
Title: Process for manufacturing a padded element
Inventor: HUGHES IAN L
IPC: B29K105/04
Filed: 1992-01-30
Granted: 1995-09-19
Abstract: A process for manufacturing a padded element is provided. The process utilizes a mold including an upper mold having an interior surface complimentary to the upper surface of the padded element and a lower mold having an interior surface complimentary to the lower surface of the padded element. A trim cover including a finished outer surface and an inner surface is placed in the upper mold such that the finished outer surface is in contact with the interior surface of the upper mold. A liquid foamable polymeric composition is placed in the lower mold. The upper mold and the lower mold are closed in a manner such that the liquid foamable polymeric composition expands in a direction substantially toward the inner surface of the trim cover and adheres thereto. During expansion (prior to and/or after the upper mold and lower mold are closed) of the liquid foamable polymeric composition, any expansion gases produced are vented.
Patent CA-2067641-C (CA)
Title: Cellulose pulps of selected morphology for improved paper strength potential
Inventor: VINSON KENNETH DOUGLAS
IPC: D21H11/14
Filed: 1992-04-30
Granted: 1997-07-15
Abstract: Cellulose pulp compositions of selected fiber morphology are disclosed.   Of particular  interest,  are morphological  forms of wood fibers with the potential to achieve improved paper strength without  suffering  the  penalty  of  slow  drainage  rate.   These cellulose pulps are especially useful  for efficiently producing paper structures such as tissue paper of requisite strength.
Patent CA-2069998-C (CA)
Title: Boat trailers for all-terrain vehicles
Inventor: JOLIVET RENE
IPC: B60P3/10
Filed: 1992-05-29
Granted: 1995-11-07
Abstract: This trailer has a hitch and a portable wheel assembly. The hitch is a straight, unyielding arm. One end of the arm is to be fastened to the bottom and along the keel and near the front end of the boat. The arm at its other end is to be coupled to an all-terrain vehicle. The separate wheel assembly has a rectangular base with short opposite lateral sides and opposite longitudinal sides. Each of the opposite lateral sides of the base has a short upward extension to confine a portion of the sides of the boat. A wheel is mounted on each of the lateral sides of the base about a stub axle fixed to the base. Straps attach the lateral sides of the base to hold the boat against the base.
Patent CA-2075155-C (CA)
Inventor: NAGARAJ DEVARAYASAMUDRAN R
IPC: B03D1/01
Filed: 1992-07-31
Granted: 2002-05-14
Abstract: Collector compositions for use in froth flotation processes for the benefication of precious metals i.e. gold, silver and platinum group metals (PGM) from sulfide ores containing especially pyrrite and pyrrhotite are disclosed. The collector comprises alkyl hydroxamic acids or their alkali metal or ammonium salts, preferably in combination with standard sulfide ore collectors such as xanthates etc.
Patent CA-2075693-C (CA)
Title: Topsheet for use in a sanitary absorbent article and production method of the topsheet
Inventor: MURAKAMI MASAKI
IPC: A61F13/49
Filed: 1992-08-10
Granted: 1997-09-23
Abstract: A  topsheet  having  openings  and  associated liquid guide capillary tubes is provided.   The topsheet has  a fabric-like appearance and oblique openings  are formed at the lower ends of the respective liquid guide capillary tubes.  Top openings of this topsheet, for use in   a   sanitary   absorptive   article,   present   plane configurations  respectively  defined  by  combination  of straight and curved lines and each pair of adjacent top openings are separated from each other by a fine rib. Bottom  openings   have  peripheral   edges   which   are irregularly  undulating.    A  mold  for  the  topsheet  is provided with a plurality of openings each presenting an asymmetric figure or a linearly symmetric figure having a single axis of symmetry.
Patent CA-2077294-C (CA)
Title: Infrared or red light sensitive migration imaging member
Inventor: TAM MAN C
IPC: G03G17/04
Filed: 1992-09-01
Granted: 1999-07-13
Abstract: Disclosed is a migration imaging member comprising a substrate, an infrared or red light radiation sensitive layer comprising a pigment predominantly sensitive to infrared or red light radiation, and a softenable layer comprising a softenable material, a charge transport material, and migration marking material predominantly sensitive to radiation at a wavelength other than that to which the infrared or red light radiation sensitive pigment is sensitive contained at or near the surface of the softenable layer. When the migration imaging member is imaged and developed, it is particularly suitable for use as a xeroprinting master and can also be used for viewing or for storing data.
Patent CA-2080966-C (CA)
Title: Method and apparatus for converting bitmap image documents to editable coded data using a standard notation to record document recognition ambiguities
Inventor: DE LA BEAUJARDIERE JEAN-MARIE
IPC: G06V30/40
Filed: 1992-10-20
Granted: 1996-08-13
Abstract: Documents represented as bitmap images are transformed into coded textual data and coded graphics data by graphics and textual recognizers, which use a standard notation for recording the results of the document recognition processes, including any ambiguities, in a document description language. Recognized portions of the document, represented as editable coded data, such as for example ASCII, are placed in elements, defined in the document description language, with all contents of an element sharing some common characteristic. Elements can include, for example: character-string-elements, questionable-character-elements, questionable-word-elements, verified-word-elements, alternate-word-elements, segment- elements, and arc-elements.
Patent CA-2081306-C (CA)
Title: Semiconductor film bolometer thermal infrared detector
Inventor: LIDDIARD KEVIN CHARLES
IPC: G01J1/02
Filed: 1991-04-24
Granted: 2000-07-18
Abstract: A thermal infrared detector comprising a dielectric pellicle (5) suspended over a cavity in a substrate (6), the pellicle supporting a detector element (1) comprising a heat sensitive semiconductor layer (3) between a pair of thin film metallic contacts (2, 4), these being deposited on the pellicle, the cavity being formed by etching and removal of the substrate material through holes or slots (8) in the surface of the substrate.
Patent CA-2085898-C (CA)
Title: Furniture polish concentrate and formulations
Inventor: MILLER ERIC J
IPC: C08L83/04
Filed: 1991-06-18
Granted: 1995-10-10
Abstract: A furniture polish concentrate is disclosed. Also disclosed is a furniture polish composition formulated from such a con-centrate. The furniture polish concentrate dimethyl silicone and a poly-(dimethyl)-co-poly(methyl, oxygen-containing) siloxane copolymer, structurally depicted as (I), wherein "A1" is Si-(-CH3)3; wherein "A2" is O-Si-(-CH3)3; wherein "B" is (CH2)i(M)j(L)(CH2CH2O)nR; wherein "i" is either 0 or an integer value of 3 to 8 inclusive; wherein "j" is either 1 when "i" is 0 or is 0 when "i" is 3 to 8 inclusive; wherein "M" is (II), wherein "L" is either -O- or is -COO-; wherein "n" is either 0 or is an integer value of 1 to 3 inclusive; wherein "R" is either -H, CH3, or -C2H5; wherein "y" is about 18 to about 60 mole percent; and wherein the sum of "A1", "A2", "y" and "z" is 100 mole percent.
Patent CA-2086415-C (CA)
Inventor: BRAITHWAITE PHILIP WILSON
IPC: A61M13/00
Filed: 1991-07-11
Granted: 1996-05-07
Abstract: A novel inhaler is provided for delivering a substance in a finely divided form.   The inhaler includes a body defining a storage chamber for the substance to be deliv-ered, and further defining an inhalation passage through which air is drawn via a mouthpiece.  A metering member is operable to transfer a volumetric dose of the substance from the storage chamber to the inhalation passage, the metering member having a metering surface which provides at least one dispensing cup, and which is movable between a first position in which at least one dispensing cup is presented to the storage chamber to receive a dose of the substance, and a second position in which a dose of the substance is presented to the inhalation passage in the dispensing cup which is upwardly open in use.  Cup clearing means is provided for ensuring that at least one dispensing cup is free from the substance before being presented to the storage chamber.  The cup clearing means includes means for moving at least one dispensing cup into a position from which, in normal use of the inhaler, any of the substance remaining in the dispensing cup would tend to fall, under the influence of gravity, out of the dispensing cup, after a dose of the substance has been presented in the dispens-ing cup to the inhalation passage, and before the dispens-ing cup is again presented to the storage chamber.
Patent CA-2087130-C (CA)
Inventor: CAMPION TERESE A
IPC: A61F13/32
Filed: 1993-01-12
Granted: 2004-07-27
Abstract: An insertion device 10 for inserting material 13 into a body cavity is provided. An elongate, tubular holder 12, shaped for insertion into the body cavity, is adapted to hold the material to be inserted. The holder 12 has a material expulsion end portion 14 and a plunger 20, which is telescopically and slidably mounted in the holder, which is adapted to expel the material from the holder when pushed manually into the holder. The holder, and preferably the plunger as well, comprises an outer paper layer 28 and a polymer layer, preferably a cellophane layer 30, adhered to the paper.layer on its outer surface, the layer having adequate water resistance to maintain its integrity during insertion into the body cavity.
Patent CA-2091622-C (CA)
Title: Method and apparatus for measuring central venous oxygen saturation during human cardiopulmonary resuscitation and clinical shock
Inventor: RIVERS EMANUEL P
IPC: A61B5/1459
Filed: 1993-03-15
Granted: 2004-02-17
Abstract: A fiber optic catheter for continuous measurement of central venous oxygen saturation (Scv02> during human cardiopulmonary arrest and shock. When applied in cardiopulmonary arrest (cardiac arrest), the catheter provides therapeutic and prognostic guidelines in the management of a patient in this condition. The catheter also serves as a conduit for fluid and drug infusion and as a sampling port for venous blood. The catheter comprises a body having a first port that exits through a connector body to the computer interface that provides the sending signal and receiving signal which generates central venous oxygen saturation readings. A fiberoptic bundle of afferent and efferent light-conducting fibers transverses the first port to provide signal generation and interpretation of oxygen measured in the blood. A second port is a lumen that traverses and exits at the distal port to allow for pressure measurement and sampling of the venous blood. A third proximal port provides an opening of a lumen that transverses and exits the catheter via a side port spaced from the skin insertion site.
Patent CA-2093249-C (CA)
Title: Crosslinking agent for acrylic rubber
Inventor: TOKUNAGA TERUMITSU
IPC: C08K5/00
Filed: 1993-04-02
Granted: 2002-07-23
Abstract: A crosslinking agent suitable for acrylic rubbers, particularly for acrylic rubbers containing units of a cyanoacetic acid comonomer or a malonic acid comonomer for imparting a crosslinkability, which comprises a reaction product of formaldehyde or a polymerized formaldehyde with urea or thiourea in the presence of an acidic catalyst.
Patent CA-2094111-C (CA)
Title: Suture anchoring device and method
Inventor: LEE DANIEL R
IPC: A61B17/04
Filed: 1993-04-15
Granted: 1999-02-16
Abstract: A suture anchor includes a rivet for insertion into a pre-drilled bore hole in bone,  and a setting pin which extends through an axial aperture in the rivet.  Preferably the setting pin has barbed legs which are radially expandable to frictionally engage the walls of the bore hole to secure the anchor  therein.     The  setting  pin  includes  a  suture accommodating  aperture,  surface,  and/or  slot.    In  one embodiment, a snap-fitting detent and notch are engageable with each other to form an escapement mechanism to position the setting pin at discrete positions within the axial aperture of the rivet.
Patent CA-2094852-C (CA)
Title: Cross groove constant velocity joint cage having angled ball retaining windows
Inventor: WARNKE JAMES W
IPC: F16D3/226
Filed: 1993-04-26
Granted: 2003-07-29
Abstract: A cross groove variety of constant velocity universal joint includes an inner race having a plurality of grooves formed in an outer surface thereof and an outer race having a plurality of grooves formed in an inner surface thereof.  For each pair of associated inner and outer race grooves, the inner race groove is inclined in one direction relative to the rotational axis of the joint, while the outer race groove is inclined in the opposite direction. A ball is disposed in each of the associated inner and outer race grooves for providing a driving connection between the inner and outer races. A cage is provided with openings for retaining the balls in the grooves. The cage openings are formed having angled side walls which open up toward the center of the joint. The angled side walls are effective to position the point of contact between the balls and the angled side walls away from a lower edge surface of the cage. Consequently, an inner bore radius of the cage can be increased to allow greater angular motion and axial movement of the joint. Also, the balls are pinched against the angled side walls during operation of the joint to prevent the cage from chattering.