baber/WOPTO huggingface dataset:
Patent CA-2153433-C (CA)
Title: Film extruded from an in situ blend of ethylene copolymers
Inventor: MICHIE WILLIAM JAMES JR
IPC: B29L7/00
Filed: 1995-07-07
Granted: 1999-05-25
Abstract: A film comprising a blend of copolymers, which has been (i) extruded to a gauge in the range of about 0.3 to about 0.9 mil, said film having an Elmendorf Tear Strength in the machine direction of at least about 25 grams per mil greater than the Elmendorf Tear Strength in the machine direction of the same blend of copolymers, which has been extruded to a gauge of one mil, or (ii) extruded to a heavy gauge of at least about 4.5 mils and then biaxially oriented and reduced to a gauge of about 1.5 mils or less, first in the machine direction at a gauge reduction ratio of at least about 2:1, and then in the transverse direction at a gauge reduction ratio of at least about 1.5:1, said blend having been produced in situ by contacting ethylene and at least one alpha-olefin comonomer with a magnesium/titanium based catalyst system in each of two reactors connected in series, under polymerization conditions.
Patent CA-2155363-C (CA)
Title: Broadcast video burst transmission cyclic distribution apparatus and method
Inventor: WALTERS ERIC HALL
IPC: H04N7/173
Filed: 1995-08-03
Granted: 2002-04-30
Abstract: An apparatus and method for broadcast burst transmission of compressed audio/video programs from a stored library to a multiplicity of subscibers.        The stored programs are burst transmitted repeatedly in a predetermined sequence of entire programs or segments thereof to a receiver at each subscriber's location.  Each receiver is operative for accessing the predetermined broadcast schedule, inputting a subscriber's order for one or more programs, monitoring the broadcast burst transmissions for the one or more ordered programs, receiving the one or more ordered programs in a burst time period corresponding to the time period of the burst transmission, and storing the one or more ordered programs.  The subscriber then enjoys full VCR-like control over playback at his convenience of the ordered, stored programs, that are then decompressed by the receiver for viewing in real time.
Patent CA-2156801-C (CA)
Title: Combination arterial stent
Inventor: MARSHALL PAUL
IPC: A61F2/82
Filed: 1995-08-23
Granted: 2006-11-14
Abstract: A stent which may be emplaced into the lumen of the body. The stent has an expandable first section with a first diameter and an expanded second diameter larger than its first diameter. There is also a second section connected to the first section, the second section contains a third diameter and an expanded fourth diameter which is larger than the third diameter. Finally, the second diameter is different from the fourth diameter. Thus, the device may be emplaced between lumens of different sizes. Ideally, this stent can be placed at the junction at the aorta and the iliac arteries, where the size of the lumens are typically different. In use, therefore, the device provides the surgeon with a useful tool to holding open junctions of various sized lumens.
Patent CA-2156901-C (CA)
Inventor: ZALIPSKY SAMUEL
IPC: A61K47/48
Filed: 1994-03-02
Granted: 2001-12-18
Abstract: A lipid-polymer conjugate for use in forming long-circulating lipsomes is disclosed. Thc conjugste includes a vesicle-forming lipid having convalently attached to its polar head group, one of the polymers: polyvinylpyrrolidone, polyvinylmethylether, polyhydroxypropol methacrylate, polyhydroxypropylmethacrylamide, polyhydroxyethyl acrylate, polymethacrylamide, polydimethylacrylamide, polymethyloxa-zoline, polyethylloxazoline, polyhydroxyethyloxazoline, polyhydroxypropyloxazoline, or polyaspartamide.  A method for preparing liposomes containing the lipid-polymer conjugate is also disclosed.
Patent CA-2158876-C (CA)
Title: Flooring system with internal cavities
Inventor: STIEF REINHARD
IPC: E04F15/20
Filed: 1995-09-22
Granted: 1999-05-04
Abstract: A flooring system with internal cavities includes a shaped intermediate flooringlayer which is positioned between an upper flooring layer and a lower flooring layer and includes pot-shaped depressions and flat, intervening portions surrounding the depressions. The depressions are filled with a sound dampening filler material. This preventsaccumulation of the cementous top layer material in the region of the depressions which significantly reduces the drying time of the cementous top layer and reliably prevents internal tension in the top layer. Filling the depressions with sound absorbing material significantly reduces the transmission of sound or footsteps from the top layer to the bottom layer.
Patent CA-2159507-C (CA)
Inventor: SALYERS MARSHALL L
IPC: F16L41/08
Filed: 1994-03-30
Granted: 2005-07-12
Abstract: A low carryover fitting assembly for coupling tubing (64) to a device (18) having a sealing surface (16) is presented. The fitting includes a ferrule (220) having a conical head (222) for seating against the sealing surface (16). The ferrule has a conical tail (226). The ferrule (220) has an axial passage (228) that is substantially equal in diameter to the inside diameter of the tubing (64). The fitting includes a sleeve (50) having a ramped inner surface (60) that is greater in inside diameter toward  the forward end of the sleeve (50) and smaller in inside towards a rearward end of the sleeve (50). The fitting also includes a coupler (70), such as a coupling nut (70). The coupler (70) has a front surface (79) dial engages the head (222) of the ferrule (220) to push the head (222) against the sealing surface (16). The nut (70) has an inner ramp or shoulder (76) that engages the sleeve (50) to urge the sleeve (50) towards the head (222) of the ferrule (220) when the coupling is tightened. The tubing (64) is compressed between the tail (226) of the ferrule (220) and the tapered section (60) of the sleeve (50). The tubing (64) is compressed so that it flows to a region between the tail (226) and the ramped inner surface (60).
Patent CA-2162632-C (CA)
Title: Spring-biased latch
Inventor: GAURON JACQUES P
IPC: F16B2/06
Filed: 1995-11-10
Granted: 1999-09-21
Abstract: A spring-biased latch is disclosed for removably attaching a first component, such as a seat, to an elongate member, such as the tubular frame of a wheelchair.  The spring-biased latch comprises a body portion having a top and a pair of leg members that are adapted to removably receive an elongate member, a catch arm pivotally attached to the top of the body portion, and a release lever pivotally attached to the top of the body portion.  The catch arm and release lever are configurable in a first position where the inboard end of the release lever abuts the inboard end of the catch arm such that the catch arm braces a portion of the wheelchair seat between the outboard end of the catch arm and the tubular frame of the wheelchair.  The catch arm and release lever are also configurable in a second position where application of force to the outboard end of the release lever pivots the inboard end of the release lever away from the inboard end of the catch arm such that the catch arm pivots away from the wheelchair seat so that the catch arm does not brace a portion of the wheelchair seat between the outboard end of the catch arm and the tubular frame of the wheelchair.  To re-secure the wheelchair seat to the tubular frame of the wheelchair, application of force to the outboard end of the catch arm pivots the catch arm and release lever so that the inboard end of the release lever abuts the inboard end of the catch arm and the outboard end of the catch arm braces a portion of the wheelchair seat against the tubular frame of the wheelchair.
Patent CA-2171578-C (CA)
Inventor: COX KENNETH CHARLES
IPC: G06F3/0484
Filed: 1996-03-12
Granted: 2000-08-29
Abstract: A method and apparatus for the three dimensional graphical display of information. Information is displayed as nodes and arcs connecting nodes. The nodes and arcs are displayed with their three dimensional characteristics used to encode data attributes. In one embodiment, the nodes and arcs represent geographic network data and are displayed on a representation of a globe. The height of the arcs above or below the surface of the globe encodes a link attribute of the data, while the height of the nodes above or below the surface of the globe encodes a node attribute of the data.  Three dimensional characteristics of the nodes and arcs other than height may also be used to encode data attributes. In addition, the three dimensional representation of the data allows for novel thresholding techniques, such as drawing certain nodes and arcs below the surface of the globe and using the globe as a clipping surface.  User interaction is also enhanced, for example by allowing users to interactively manipulate the clipping surface as well as the three dimensional display characteristics of the nodes and links.
Patent CA-2175749-C (CA)
Inventor: WANG HE F
IPC: H04B7/005
Filed: 1996-05-03
Granted: 1999-05-11
Abstract: An output power control system prevents saturation by limiting total output power and maintaining closed loop responsiveness for a radio telephone having closed loop and open loop gain control systems. The output power control system determines when total output power exceeds an output power trigger level and automatically enters a saturation prevention mode whereby total output poweris reduced through modification of a closed loop power control register. In one embodiment, an output detector and an output comparator continuously monitor output power, and in another embodiment, an analog-to-digital converter samples output power levels. Saturation prevention processes of various preferred embodiments include, through continual monitoring, edge-triggered interrupt servicing, and level-triggered interrupt servicing, subsequently modifying the closed loop power control register to decrease the closed loop output power control portion of the total output power until the output power falls below theoutput trigger level. A saturation prevention method of yet another embodiment includes maintaining the closed loop power control register at a constant level unless a decrease in received signal strength is detected, in which case the closed loop power control register is modified to compensate for an increased open loopcomponent of the total output power.
Patent CA-2178188-C (CA)
Inventor: HEN JOHN
IPC: E21B37/06
Filed: 1996-06-04
Granted: 2006-01-10
Abstract: An improvement in a method for the inhibition of scale deposition on the surfaces of a well coproducing oil and scale forming brines, said method comprising injecting into the well reservoir an acidic aqueous solution at a first pH containing dissolved therein a scale inhibitor, multivalent metal ions, and a heat-sensitive pH-increasing substance which decomposes at elevated temperatures liberating an alkaline compound such that the solution is inherently heated by the higher ambient reservoir temperature to a temperature at which the alkaline compound is liberated from the heat-sensitive substance thus raising the pH of the solution to a point at which a sparingly soluble multivalent metal salt of the scale inhibitor is phase separated from the solution on the porous surfaces of the reservoir rock formation, providing for a slow release of inhibitor into the produced brines when the well is in its production phase. Such improvement comprises injecting as a preflush before said injection of inhibitor solution and optionally as an afterflush after said injection of inhibitor solution, a solution of a heat sensitive pH-increasing substance and multivalent metal ions.
Patent CA-2179572-C (CA)
Inventor: TSUBATA NORITAKA
IPC: A44B18/00
Filed: 1996-06-20
Granted: 2000-05-16
Abstract: A surface fastener including a woven fabric having a number of interlocking elements projecting from one surface of said woven fabric, at least two round cords disposed adjacent to the interlocking elements and woven at regular intervals as the woven fabric are woven in such a condition that the round cords are longitudinally tensed and have a smaller height than the interlocking elements and are disposed in an exposed condition on the surface of the woven fabric.  And flat attachment portions devoid of interlocking elements are disposed in juxtaposition with the round cords on outer sides of the round cords opposite to the inter-locking elements.  A number of round cords may be disposed on the woven fabric.  The thus woven round cords are made rigid and highly resistant to compression or crush.  With the round cords thus provided, the interlocking elements can provide a great fastening force over a prolonged period of use.  By virtue of the flat attachment portion, the surface fastener can be readily attached by sewing to an article.
Patent CA-2190544-C (CA)
Inventor: DICKINSON ALEXANDER GEORGE
IPC: G06F3/033
Filed: 1996-11-18
Granted: 2000-01-18
Abstract: An apparatus for detecting topographic variations on an object such as a finger includes an array of sensing elements disposed on a substrate which each have a parasitic capacitance. An insulating receiving surface is disposed over the array of sensing elements and is adapted to receive the object such that a sensing element and a portion of the object located thereabove creates a measurable change in capacitance with respect to the parasitic capacitance. An electronic circuit is coupled to the array of sensing elements for measuring the measurable change in capacitance.
Patent CA-2191386-C (CA)
Inventor: BARNES MICHAEL WILLIAM
IPC: B60R21/26
Filed: 1996-11-27
Granted: 1999-01-19
Abstract: In gas generant compositions utilizing as fuel, at least in part, tartaric acid, aqueous processing is improved through the use of d,l-tartaric acid over naturally-occurring l-tartaric acid.
Patent CA-2191860-C (CA)
Title: Multi-screw, extrusion-compounding machine with modular mixing elements
Inventor: VALSAMIS LEFTERIS N
IPC: B29C48/03
Filed: 1995-06-01
Granted: 2001-01-30
Abstract: Multi-screw, extrusion-compounding machines (20) having co-rotating screw assemblies (21, 22) incorporating sets of modular mixing elements (51, 52, 53, 54) of non-symmetrical geometries with relatively large wing tip clearances are disclosed. These sets of non-symmetrical modular mixing elements (51, 52, 53, 54) are removably mountable at any suitable axial locations along their respective rotationally-driven screw shafts (30) for optimizing performance in relationship to particular plastic material and particular additives being compounded. The non-symmetrical geometries provide dynamic wedging pressurization for repeatedly propelling relatively large circumferential flows of the plastic material through large shear clearances. Due to the relatively large shear clearances, the plastic material is mixed at less elevated and more uniform temperatures than usually occurs with use of prior symmetrical kneading blocks or kneading discs. At less elevated temperatures most plastic materials exhibit increased viscosities. Thus, the resultant increased viscosities enable the plastic material to be processed at higher shear stresses for enhancing dispersive mixing, in spite of the relatively large clearances.
Patent CA-2193902-C (CA)
Inventor: HENTZ JOSEPH A
IPC: F21V17/00
Filed: 1996-12-24
Granted: 1999-11-02
Abstract: A pull-on clip manually assembled to a downlighting reflector trim in a snap-fastening manner without the need for tools, the invention mounts the reflector trim and a socket/spring clip assembly snap-fastened onto the trim within the interior of a lamp housing or can particularly in a downlighting fixture. The pull-on clip facilitates lamp positioning within the can and thereby within the fixture such that optimum lamp performance is obtained. The structure of the pull-on clip further facilitates the snug positioning of the reflector trim about a ceiling hole above which the downlighting fixture utilizing said clip is mounted for operation, thereby providing a clean appearance and positive lamp positioning.
Patent CA-2194948-C (CA)
Inventor: TAKEMOTO TADASHI
IPC: A23L27/30
Filed: 1997-01-13
Granted: 2006-05-23
Abstract: The invention is concerned with novel aspartylamide derivatives having the general formula:      R1-NHC1H(CH2COOH)CONH-C2R2R3-C3H(OH)-R4 (I) wherein R1 represents a hydrogen atom, a saturated or unsaturated linear or cyclic hydrocarbon group having from 1 to 13 carbon atoms or a mixed hydrocarbon group thereof; R2 and R3 each represent a hydrogen atom or a substituent selected from the group consisting of alkyl groups having from 1 to 6 carbon atoms, alkoxyalkyl groups having from 2 to 7 carbon atoms, hydroxyalkyl groups having from 2 to 7 carbon atoms, a phenyl group, a 2-furyl group, a dimethylene group, a trimethylene group, a tetramethylene group and a pentamethylene group; when R1 is a saturated or unsaturated linear or cyclic hydrocarbon group having from 1 to 13 carbon atoms or a mixed hydrocarbon group thereof, R4 represents an alkyl group having from 1 to 12 carbon atoms or a substituent of formula (II) or (III), and when R1 is a hydrogen atom, R4 represents a substituent of formula (III): -(CHR5)n-R6 (II) -(CH2)m C4HR7R8 (III) wherein, in formula (II), R5 represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, R6 represents a 3- to 10-membered cycloalkyl group having a total of 12 or less carbon atoms, a cycloalkenyl group, a cycloalkyl group which is substituted by an alkyl group, a cycloalkenyl group, a bicycloalkyl group, a bicycloalkenyl group, or a tricycloalkenyl group, and n represents 0 or 1; and in formula (III), R7 and R8 each represent a hydrogen atom, a cycloalkyl group having from 3 to 4 carbon atoms, an alkyl group having from 1 to 6 carbon atoms, an alkoxyalkyl group having from 2 to 7 carbon atoms, a phenyl group, a phenyl group having a substituent selected from the group consisting of fluorine, chlorine, bromine and iodine atoms, a hydroxy group, an alkyl group having from 1 to 6 carbon atoms, an alkoxy group having from 2 to 7 carbon atoms, a cyano group, a nitro group, an acetyl group, an amino group and an acetylamino group in the 2-, 3- or 4-position, a phenyl group having a methylenedioxy group, a trimethylene group or a tetramethylene group in the 2- and 3-positions or in the 3- and 4-positions, a 2-, 3- or 4-pyridyl group, a 2- or 3-furyl group, or a 2- or 3-thienyl group, and m represents 0 or 1; and the C1-configuration is (S), and the C2-, C3- and C4-configurations are (R), (S) or (RS); and salts thereof. The compounds of formula (I) are useful as sweeteners which are excellent in terms of sweetness intensity, stability and sweetness properties.
Patent CA-2198512-C (CA)
Title: Access device
Inventor: HEDLEY ROBERT IAN
IPC: E06C5/04
Filed: 1997-02-26
Granted: 2006-04-18
Abstract: An access device for providing access between a substrate surface and an elevated surface, said access ladder comprising first and second side members connected by a plurality of cross-members extending from a first end of said access device to a second end of said access device; said access device being pivotally attached to said elevated surface by a rotating axis extending substantially horizontally outward from said elevated surface for rotation of said device between a substantially downwardly disposed boarding position and a substantially horizontally disposed storage position; wherein, in said boarding position, said second end of said access device is substantially downwardly disposed and included at between 60° and 75° relative to said substrate surface; and, wherein, in said storage position, said ends of said access device are substantially horizontally aligned, said device resting on one side member thereof; whereby, said access device is movable from said boarding position and said storage position, and vice versa, wherein, in a first step, said device is rotated about said axis by at least 90°, from said boarding position to a rotated position; and, in a second step, said device is retracted such that said second end of said device is retracted towards said elevated surface.
Patent CA-2200569-C (CA)
Inventor: BALL GARY A
IPC: H01S3/1055
Filed: 1995-09-21
Granted: 2005-01-11
Abstract: A fiber laser (26) including a rare-earth doped fiber laser cavity (32) delimited by a pair of reflective elements (28, 30), such as Bragg gratings, is tuned by compressing the cavity (32) and the gratings (28, 30). Because an optical fiber is much stronger under compression than in tension, the laser (26) is tunable over a much broader range than conventional tension/stretching techniques.
Patent CA-2202594-C (CA)
Inventor: FORD DAVID
IPC: A47J31/56
Filed: 1997-04-14
Granted: 2002-11-26
Abstract: A sensing assembly which includes a sensing device.      The sensing assembly is constructed for use with an automatic beverage apparatus. The sensing assembly is attached to a beverage reservoir and senses, by physical contact, a quantity of beverage retained in the reservoir. The sensing assembly provides information about the quantity of beverage retained in the reservoir. When coupled to a beverage brewing apparatus, the beverage brewing apparatus will automatically produce a predetermined quantity of beverage in response to conditions sensed by said sensing assembly.
Patent CA-2205473-C (CA)
Title: Anti-reflux ureteral stent
Inventor: ROEMER FREDERICK D
IPC: A61M25/00
Filed: 1997-05-15
Granted: 2006-06-06
Abstract: Ureteral stems are tubes which are placed in the ureter between the bladder and kidney to maintain patency when otherwise due to stone burden, invasive tumor, scarring, or whenever the ureter has become obstructed in order to provide drainage of urine from the kidney to the bladder. In the past, stems of this nature are open ended tubes and may allow for the reflux of urine back into the kidney when there is sufficient buildup of pressure within the bladder. Since urine is generally considered to be sterile when within the body, this is generally not a problem.      However, if the patient has a bladder infection and/or pyrogens are present, then urine refluxed into the ureter and kidney may result in the development of sepsis in the patient and cause serious illness and even death. The stent of the present invention has a very specific design and avoids this problem by providing a stent having a closed section, i.e., the bladder end section does not contain any fluid passageways and also comprises a means for retaining the stent within the bladder after implantation.
Patent CA-2211242-C (CA)
Inventor: PALLMANN WILHELM
IPC: B26D7/12
Filed: 1997-07-23
Granted: 2006-10-10
Abstract: The invention is based on the method for the resharpening of knives used in size-reduction machines described in the US Patent 5,525,094 in which the knives remain installed in a rotatable knife carrier. With this invention the process has been further developed in so far as the cutting edges S are ground one after another respectively at one stop position of the knife carrier 8 in which the radial ray ~ of the cutting circle with the direction ~ of the grinding feed v at the knife cutting edges S encloses the clearance angle .PHI..     So the invention offers the possibility to chose for the cutting edges any clearance angle matching the properties of the material to be flaked.