baber/WOPTO huggingface dataset:
Patent CA-2099639-C (CA)
Title: Dry analytical element for acetaminophen assay
Inventor: SCHAEFFER JAMES R
IPC: G01N33/52
Filed: 1993-06-24
Granted: 1998-12-22
Abstract: A spectrophotometric assay for the detection of acetaminophen in aqueous fluids can be carried out with a dry analytical element.  The element comprises a support having thereon one or more reagent layers containing a first enzyme, aryl acylamidase, to cleave the amide bond of acetaminophen to produce p-aminophenol; a second enzyme, ascorbic acid oxidase, to oxidize the p-aminophenol so that it couples to a water soluble coupling agent to form a dye that is read at 670nm.  The assay is precise, accurate on serum and plasma samples, and relatively free from significant interferences.  The element also allows measurement over a broad dynamic range.
Patent CA-2106326-C (CA)
Title: On/off valve capable of drawing back fluid when closed
Inventor: TOMITA ICHIO
IPC: F16K23/00
Filed: 1993-09-16
Granted: 1997-07-22
Abstract: An OFF/OFF valve including a fluid passage formed in the valve body (51), and having a valve seat (55), a smaller diameter portion (56) extending from the valve seat (55) on a downstream side of the valve seat (55), and a larger diameter portion (57) extending from the smaller diameter portion (56) on a downstream side of the smaller diameter portion (56).  A valve element (58) is disposed so as to be movable between a position adjacent the valve seat (55) and a position within the larger diameter portion (57). The valve element (58) is driven by a valve element driving assembly.  When the valve is closed, the valve element (58) moves toward the valve seat (55).  When the valve element (58) moves within the smaller diameter portion (56), the fluid which has passed through the valve element (58) is drawn back due to the pumping effect of the valve element (58) before the valve element (58) finally reaches the valve seat (55) and the valve is completely closed.
Patent CA-2109317-C (CA)
Title: Materiaux interactifs comprenant un alliage de nickel, de chrome et de fer
Inventor: PERRY MICHAEL R
IPC: B32B15/08
Filed: 1992-04-28
Granted: 2000-09-26
Abstract: Structure de sensibilisation aux micro-ondes (30) qui comprend un substrat (12) et une couche métallique (14) fixée sur ledit substrat. Une couche adhésive (34) est fixée sur la couche métallique (30) et une couche de support (16) est fixée sur la couche adhésive (34) afin de soutenir la structure de sensibilisation aux micro-ondes. Ladite couche métallique est composée d'environ 60 % à 68 % de nickel, d'environ 5 % à 37 % de chrome et d'environ 3 % à 38 % de fer.
Patent CA-2110486-C (CA)
Inventor: DESIMONE FRANK C
IPC: E05G1/04
Filed: 1992-06-11
Granted: 1997-12-02
Abstract: In the preferred embodiment of the invention, a currency security box (4) is releasably secured to a frame (3) within a device, such as a vending machine, gaming machine, gaming table, amusement machine, bank machine or the like, and is automatically released from the frame by sliding a transportable security box cover (30) over the security box. At the position where the security box cover (30) releases the box (4) from the frame (3), the security box cover also effectively encloses the security box and automatically latches (90) onto the security box (98). The security box, along with the security box cover, may now be removed from the frame and the device. The security box cover includes a locking device (102) which must be activated to release the security box cover from the security box so as to gain access to the currency in the box.
Patent CA-2111328-C (CA)
Inventor: ARCHIBALD WILLIAM E
IPC: B65D81/34
Filed: 1992-06-11
Granted: 1996-10-22
Abstract: A food product comprising an edible charge of popping corn (10) and a bag (12) containing that charge and suitable for use in a microwave open.  The bag is preferably of a tube type, and includes generally flat front (14) and back (16) panels and two inwardly folded side panels (20 and 22).  The folds of the side panels  preferably form two or more gussets (20a, 20b, 22a, 22b). The bag may be made of single ply paper sufficiently  stiff to support the bag in an expanded position  and maintain its approxi-mate expanded shape achieved during  cooling but flexible enough  to be readily expanded.  The gussets in the side panels  are formed to open readily, and have  independently movable  ends (23), thereby enabling the bag to inflate more  completely and be-come more rounded.
Patent CA-2116849-C (CA)
Inventor: LAI YU-CHIN
IPC: G02B1/04
Filed: 1992-09-01
Granted: 2001-06-12
Abstract: Improved silicone-containing hydrogels with enhanced wettability comprising at least one silicone-containing monomer and an equimolar amphoteric mixture of acid-containing comonomers and amine-containing comonomers are herein disclosed.
Patent CA-2117396-C (CA)
Title: Processor system comprising a processor and a memory field for containing a computer interface
Inventor: ANSTOETZ KARIN HELENE MARIA
IPC: G06F3/0482
Filed: 1994-07-07
Granted: 1999-04-13
Abstract: Known processor systems comprising a processor and memory fields for containing computer interface profiles each having a number of elements each representing a function are static systems. The processor system according to the invention is a dynamic system, by allocating an element parameter to an element, which element parameter is a function of the number of times this element has been activated, for example per time interval, and by comparing this element parameter with a predefined value. In dependence of the comparison result, the element is displayed directly or indirectly.
Patent CA-2118187-C (CA)
Title: Surgical needle with decreased penetration
Inventor: MCGREGOR WALTER
IPC: A61B19/00
Filed: 1994-10-14
Granted: 2007-05-01
Abstract: A blunt tip surgical needle which significantly reduces the probability of skin penetration of the gloved hand of  an operator is disclosed. The blunt tip needle includes a tip portion having at least one flat surface. The flat surface(s) blends smoothly between each other and with the outer surface of the tip portion such that the entire tip portion has a continuously smooth outer surface lacking any discontinuities or sharp edges.
Patent CA-2128964-C (CA)
Inventor: OSATO YOICHI
IPC: G11B11/105
Filed: 1994-07-27
Granted: 1998-11-10
Abstract: A magnetooptical recording medium is constituted by laminating at least a first magnetic layer and a second magnetic layer in an order named on a substrate which has transparency and on which receiving a laser beam is incident.  The coercive force of the second magnetic layer is greater than that of the first magnetic layer.  The coercive force of the second magnetic layer is greater than o~/2M~2h2, where ~w is a magnetic wall energy between the first and second magnetic layers, M~2 is a saturation magnetization of the second magnetic layer, and h2 is a film thickness of the second magnetic layer.  The coercive force of the first magnetic layer is grater than ~w/2M~1h1, where M~w is a saturation magnetization of the first magnetic layer, and h1 is a film thickness of the first magnetic layer.  The compensation temperature of the first magnetic layer is smaller than the Curie temperature of the first magnetic layer.  A method of recording information on the magnetoopical recording medium is effected as follows.  A direction of a magnetic moment of the first magnetic layer is aligned in one direction by applying an external magnetic field thereto.  A laser spot with low power is irradiated to the medium while applying a recording bias magnetic field in the same direction as the direction of the external magnetic field so as to form a first recording bit in a high temperature region in the laser spot.  A laser spot with high power is irradiated to the medium while applying the recording bias magnetic field so as to form a second recording bit in which a magnetic wall is present between the first and second magnetic layers, in the high-temperature region in the laser spot.  One of the first bit forming recording and the second bit forming recording is selectively determined in correspondence with information.
Patent CA-2129888-C (CA)
Title: Calibration method for transmission control clutches
Inventor: TESTERMAN MICHAEL DUANE
IPC: F16D48/02
Filed: 1994-08-10
Granted: 1998-11-03
Abstract: A vehicle powershift transmission has a lube oil passage which communication lube oil to a clutch pack.  Communication of lube oil is controlled as a function of the engagement state of the clutch pack.  The hydraulic control pressure required to initially engage the clutch pack is determined or calibrated by a method wherein the lube oil pressure is monitored while the clutch control pressure is gradually increased.  When the lube oil pressure reaches a certain level corresponding to clutch pack engagement, the current value of the control pressure is saved as the calibration pressure.
Patent CA-2129900-C (CA)
Title: Sealless dispensing apparatus
Inventor: DICKAU EWALD F
IPC: B05C17/005
Filed: 1993-12-10
Granted: 2004-10-26
Abstract: Dispensing apparatus capable of dispensing a wide variety of fluids, such as adhesives, is provided, The structure of the apparatus allows it to be miniaturized, thereby facilitating its use for many applications. The apparatus includes a cylindrical housing (12) in which a slide (14) is mounted. The housing includes a fluid reservoir (18) which is supplied with pressurized fluid. A longitudinal passage (20) extends through the slide for providing this fluid to the reservoir (18).  A bellows seal (42) is employed for sealing off an actuating mechanism firm the reservoir. The seal is connected between the slide (14) and a support fixedly mounted to the housing. A valve mechanism (24, 26) is provided at one end of the housing for controlling the flow of fluid from the reservoir. The valva mechanism (24, 26) is directly or indirectly responsive to the slide. Fluid may to caused to flow through the valve mechanism either by fluid pressure or by positive displacement.
Patent CA-2132109-C (CA)
Inventor: CENTA ANTONY RICHARD
IPC: E04F15/16
Filed: 1993-05-17
Granted: 1996-04-23
Abstract: The edging strip is a development of the invention described in UK - PS 2250192, which provides a method of securing an edge of floorcovering to a floor surface. The method is characterized by using an edging strip comprising separate housing and insert strips, which are interfitted via co-operating locking means. The edging strips described are relatively deep and may need to be fitted into channels formed in the floor. The present invention provides an edging strip of relatively shallow construction, which is characterised by the interlocking means comprising a housing strip (2) which is "U" shaped, one sidewall (17) of which is higher than the other sidewall (18) by an amount substantially equal to or greater than the thickness of the floorcovering, and an insert strip (3) which is "L" shaped, the horizontal limb (19) being adapted to fit within the housing strip groove (20) with its upper surface level with or higher than the housing sidewall (18) with its vertical limb (22) adjacent the housing sidewall (17) and of equal height. Co-operating projections (24) and mating recesses (25) are provided in said insert and housing strips which lie in the horizontal plane. Preferably, the housing sidewall (17) is inclined so as to flex and thereby facilitate fixing the insert strip by pressing down along its length to snap fit into the housing strip (2).
Patent CA-2136749-C (CA)
Inventor: KORNFELD RICHARD K
IPC: H03F1/30
Filed: 1994-03-25
Granted: 1998-11-03
Abstract: A control circuit for a multi-stage power amplifier   (such   as in a portable radio transmitter) compensates for fluctuations in ambient temperature, load, signal level and power supply voltage. The control voltage is set by comparing a biasing level which is related to the amplifier input signal level to a voltage proportional to the power supply current of the last stage of the amplifier. The control voltage resulting from the comparison establishes the operating point of the last stage of the power amplifier.
Patent CA-2141245-C (CA)
Inventor: SATO OSAMU
IPC: B41J2/175
Filed: 1995-01-27
Granted: 2000-02-08
Abstract: The invention provides a method and apparatus for manufacturing a liquid container having an enclosed space within an inner wall of the liquid container, the enclosed space filled with a plurality of porous members. The plurality of porous members include a plurality of inner porous members and a plurality of outer porous members. The method includes the step of packing the porous members into the enclosed space so that the inner porous members only contact and press against other inner porous members and/or outer porous members, and the outer porous members contact and press against the inner porous members and the inner wall of the liquid container. The method also comprises a step of compressing the porous members. The apparatus has compressing means for compressing the porous members and packing means for packing the porous members into the liquid container. The invention aims to reduce an amount of non-dischargeable liquid contained by the liquid container by packing porous members into the liquid container with a desired compression distribution. The invention also aims to allow the same kind of porous members to be suitably packed into containers that store liquids having different surface tensions, or containers having different capacities or shapes.
Patent CA-2141784-C (CA)
Title: Molded pulp fiber interior package cushioning structures
Inventor: BAKER ROGER J
IPC: B65D43/16
Filed: 1993-08-04
Granted: 2003-12-09
Abstract: New molded pulp and molded fiber interior package cushioning (IPC) structures (10, 47, 70, 85, 105, 125, 150, 170) provide cushioning to protect products in a package. The IPC structure (10) defines a pro-duct-receiving cavity (12), reinforcing structural ribs (15, 16, 18); crush-able structural pods (22, 25, 28). The ribs are in the form of elongate hollow ridges and include intersecting ribs (16, 18) extending in ortho-gonal directions. The ribs are distributed around the cavity to absorb energy in response to mechanical shock to prevent damage or breakage to the product. Other IPC structures include rows of pods (20), fillets (30), podded ribs (26), anti-hinge ribs, stacking ribs (26), shelves (32, 34,35), corner protectors, etc.
Patent CA-2142491-C (CA)
Inventor: MCKENNY COLIN J
IPC: B03B1/04
Filed: 1993-09-28
Granted: 1999-01-19
Abstract: A process for the flotation of particles of lignitic coal, subbituminous coal or oxidized bituminous coal contained within a slurry of coal and gangue, comprising the steps of dispersing a surfactant throughout the slurry, first conditioning the slurry such that the surfaces of the particles of coal are selectively coated by the surfactant to produce activated particles of coal, dispersing an oil throughout the slurry, second conditioning the slurry such that the surfaces of the activated particles of coal are selectively coated by the oil to produce oiled particles of coal, and floating the oiled particles of coal on the surface of the slurry for separation from the slurry and gangue.
Patent CA-2151820-C (CA)
Title: Structured lipids
Inventor: DEMICHELE STEPHEN JOSEPH
IPC: A61K31/232
Filed: 1994-01-13
Granted: 2000-11-28
Abstract: There is disclosed structured lipid containing either a gamma-linolenic acid or a dihomogamma linolenic acid residue, together with an n-3 fatty acid residue and a medium chain fatty acid residue on the same glycerol backbone. This structured lipid is particularly well adapted to the treatment of disease or stress states. The gamma-linolenic or dihomogamma-linolenic acid residues modify the prostanoid synthesis pathway, reducing the level of series "2" prostanoids and elevating the levels of series "1" and "3" prostanoids. The n-3 fatty acid residue enhances the level of series "1" prostanoids as well as increases the production of series "3" prostanoids. The medium chain fatty acid residues enhances the absorption of the structured lipid. There is also disclosed enteral and parentetal diets as well as nutritional supplements containing the structured lipids of the invention.
Patent CA-2153354-C (CA)
Title: Stable concentrated premix and its use for manufacturing aqueous detergent compositions
Inventor: BARBARINO SERGIO
IPC: C11D1/83
Filed: 1995-07-06
Granted: 1999-09-14
Abstract: The present invention relates to a stable concentrated premix comprising water-insoluble materials and surfactants comprising a hydrophobic portion and a hydrophilic portion, wherein the length chain of said hydrophobic portion is C6-C10. More specifically a process for manufacturing an aqueous detergent composition comprising the step of preparing said stable concentrated premix is disclosed, said process allowing good production flexibility at reduced costs.
Patent CA-2154558-C (CA)
Title: Process for preparing c-substituted diethylene triamines
Inventor: PETROV ORLIN
IPC: C07C271/20
Filed: 1994-01-08
Granted: 2003-10-28
Abstract: A process for preparing C-substituted diethylene triamines having general formula (I) is characterized in that a nitrogen-protected aminoethyl alcohol having general formula (II) is reacted with methane sulphonic acid chloride, tosyl chloride or trifluoroacetic acid anhydride in an organic solvent, with addition of a base, to give the corresponding mesylate, tosylate or triflate, is then filtered and the filtrate is reacted with an ethylene diamine having general formula (III) to give the desired nitrogen-protected, carbon-substituted triamine having general formula (I), in which R1 stands for a -(CH2)m-(C6H4)q-(O)k-(CH2)n-(C6H4)l-(O)r-R group or for a -(CH2)m-(C6H10)q-(O)k-(CH2)n-(C6H10)l-(O)r-R group; R2 and R3 each stand for a hydrogen atom or form together a -(CH2)p-alkylene bridge; and R4 stands for an amino protecting group, preferably for a benzyloxycarbonyl group.
Patent CA-2156977-C (CA)
Title: Improved methods and systems for subterranean multilateral well drilling and completion
Inventor: LONGBOTTOM JAMES R
IPC: E21B29/06
Filed: 1995-08-25
Granted: 2003-05-13
Abstract: Improved methods and systems for creating a multilateral well and improved multilateral well structures. In one aspect of the present invention, the method comprises the steps of: (1) setting a diverter at a prescribed position and a prescribed orientation in a main well flow conductor located within a main wellbore, (2) boring through a sidewall of the main well flow conductor and into a material surrounding the main well flow conductor, the boring creating a window having a particular shape in the sidewall, the orientation of the diverter determining a lateral position of the window in the main well flow conductor, a lateral wellbore thereby being formed in the material and extending from the main wellbore, (3) lining the lateral wellbore with a liner, the liner having an interface end, the interface end adapted to contact a periphery of the window in the sidewall and (4) cementing the liner in place within the lateral wellbore, the step of cementing creating a pressure-bearing seal between the periphery of the window and the interface end of the liner. The method allows multiple lateral wellbores to be joined to the main wellbore and provides for connectivity among main and lateral wellbores, pressure-bearing sealing of joints to allow selective isolation of one or more wellbores or portions thereof and subsequent wellbore access for rework or other purposes.
Patent CA-2159246-C (CA)
Inventor: MOTTE PHILIPPE
IPC: C08F283/06
Filed: 1995-09-27
Granted: 2008-12-02
Abstract: A polyol blend for use in the production of a high resilience polyurethane foam, comprising: a reactive polymer polyol of the kind used in high resilience polyurethane foam; a polyol of the kind used in conventional polyurethane foam; and a diol as a chain extender.
Patent CA-2168090-C (CA)
Title: Downhole clutch assembly
Inventor: GRIMSHAW ALLEN D
IPC: E21B33/04
Filed: 1995-11-28
Granted: 1998-02-17
Abstract: There  is  described  a  clutch  for  providing  a rotatable connection between the downhole end of a tubing string and a tubing anchor adapted for connection to an internal surface of a well bore, the clutch comprising a first tubular sub having an uphole and a downhole end, the uphole end being adapted for connection to the downhole end of a tubing string, a second tubular sub having an uphole and a downhole end, the uphole end of the second tubular sub being disposed annularly about the downhole end of the first tubular sub, the downhole end of the second tubular sub being adapted for connection to a tubing anchor, and connector means disposed between the first and second tubular subs, the connector means being adapted to initially prevent relative rotation between the first and second tubular subs for transmission of torque through the clutch means to a tubing anchor connected thereto,  the connector means actuatable thereafter to permit relative rotation between the first and second tubular subs.
Patent CA-2169551-C (CA)
Inventor: BAUM KEVIN L
IPC: H03J7/06
Filed: 1995-05-22
Granted: 2001-02-13
Abstract: An automatic frequency control loop structure utilizes a dual selection automatic frequency control unit which is coupled to a differential phase unit and a coherent phase unit to provide a frequency corrected received signal output for efficient tracking of frequency offset drift and a much lower probability of loss of automatic frequency control loop lock. Thus, a signal from a coherent carrier recovery process provides additional benefit by utilization in adjusting frequency offset tracking performance.
Patent CA-2171801-C (CA)
Inventor: CHANG HAK SOO
IPC: G01C13/00
Filed: 1996-03-14
Granted: 2000-01-25
Abstract: Measurement of water depth and level by measuring water column pressure at two different depths using two submerged pressure sensors or two gas bubble type level meters, deriving the average specific gravity of the water at the range depth of the lower of the two sensors or meters, and deriving the water level and depth from the calculated average specific gravity.
Patent CA-2176829-C (CA)
Title: Flexible diaphragm tonometer and method of use
Inventor: BUTTERFIELD ROBERT D
IPC: A61B5/022
Filed: 1994-09-22
Granted: 2005-06-07
Abstract: A pressure waveform monitor (10) for non-invasively monitoring the pressure waveform inside a vessel, such as an artery, includes a flexible diaphragm (33) extended across an opening of a containing (29) co ntaining a fluid (23). The flexible diaphragm (33) is pl aced against tissue surrounding an artery such that arterial pressure causes a de flection in the diaphragm (33). A deflection in the diap hragm (33) causes the fluid (23) to be redistributed throughout the container (29) whic h is effectively divided into an array of volume compart ments. The relative volume distribution is determined through impedance plethysmogr aphy. The diaphragm (33) is maintained in a calibrated position by maintaining the array of volume compartments at relatively uncha nged volumes. When the relative volumes remain essential ly unchanged, calibrated tonometry is possible. The pressure within the contain er (29) is then used to determine the pulse waveform and the pressure within the artery.