baber/WOPTO huggingface dataset:
Patent CA-2250145-A1 (CA)
Title: Recirculating filtration system for use with a transportable ion mobility spectrometer
Inventor: PERTINARIDES JOHN M A
IPC: H01J49/02
Filed: 1997-04-04
Abstract: Generally, the present invention provides a recirculating filtration system for use with a transportable ion mobility spectrometer. A first preferred embodiment of the transportable recirculating filtration system comprises a pump connected with a set of filters and flow sensors to an IMS sensor. The IMS sensor's outlet flow is cleaned by the filters and recirculated by the pump back into the IMS sensor as the carrier fluid stream flow. A portion of the IMS sensor's outlet flow equal to the amount of flow introduced into the sensor is exhausted from the filtration system to maintain a constant total flow volume through the system as the sample is being taken. A second preferred embodiment of the present invention provides a transportable recirculating filtration system for measuring an unknown concentration of a selected ionizable contaminant substance such as benzene present in which other substances may coexist, which employs a device for introducing a controlled concentration of the selected ionizable contaminant into an ion mobility spectrometry (IMS) sensor. The unknown concentration is calculated using the Standard Addition Method. The second preferred embodiment of the present invention can also be used to calibrate the IMS sensor by establishing which ionogram structures result from the presence of a particular analyte in the sample stream. A third preferred embodiment of the present invention provides a recirculating filtration system for use with a transportable ion mobility spectrometer in gas chromatography applications. The transportable recirculating filtration system comprises a pump and a set of filters and flow sensors connected to an ion mobility spectrometry sensor having a gas chromatograph column at its inlet.
Patent CA-2251332-A1 (CA)
Title: Manually operated cutting device
Inventor: SCHITTL JOSEF
IPC: B23D61/18
Filed: 1998-10-23
Abstract: A manually operated cutting device for cutting stones, concrete and similar materials and including a cutting element formed of a rotatable ring-shaped support member having a circumferential indentation, and a band-shaped continuous cutting tool provided with a plurality of cutting bodies and cooperating with the indentation of the support member.
Patent CA-2252219-A1 (CA)
Title: Canadade
Inventor: LEHMAN STEPHEN D
IPC: A23L29/30
Filed: 1998-11-16
Abstract: "In relation to the plethora of soft drinks available in the world today,this drink is unique in that it is created by the revised application of many presently existing methods of formulating liquid refreshments,the end result being a carbonated, naturally sweetened clear bottled water."
Patent CA-2253800-A1 (CA)
Title: Universal fit face mask
Inventor: SUKIENNIK CORRINE A
IPC: A41D13/11
Filed: 1997-05-22
Abstract: A conformable face mask for health care workers is provided. The use of elastomeric materials (24, 26) applied under tension helps define a plurality of gathers which facilitate the donning and positioning of the mask. An elastomeric headband (24) maintains a comfortable and efficient seal while a similar elastomeric chin snap (26) helps provide a pouch-like enclosure for the wearer's chin. The substantially rectangular face mask includes a plurality of horizontal stays (14, 16, 18) which are individually adjustable to create a three-dimensional shaped mask which defines a spaced breathing area around the wearer's nose and mouth. Additional rigidity is provided by the selected melting of horizontal bands of the filter portion of the mask.
Patent CA-2256752-A1 (CA)
Title: Dental prostheses with modified surface and method of production.
Inventor: BELLESORT STEPHANE
IPC: A61K6/884
Filed: 1997-05-28
Abstract: The invention discloses a polymer containing hydrogen atoms with the required mechanical and chemical properties, characterised in that the hydrogen atoms at the polymer surface are partially replaced by fluorine atoms, and groupings: -CF, -CF¿2? -CF¿3?, -OH, -COOH, -C=O, -OOH, -NH¿2?, -C=NH or -CONH¿2?. Such polymers enable the improvement of prosthesis retention and/or limitation of dentobacterial plaque.
Patent CA-2259204-A1 (CA)
Title: Paint for nonhazardous removal of heavy metals and method for using the same
Inventor: HENKELMAN MICHAEL L
IPC: C09D7/00
Filed: 1997-06-30
Abstract: This invention involves a novel paint formulation which acts as a carrier for heavy metal reactive chemicals so that when this novel paint is applied to a heavy metal painted surface and both are subsequently, removed, the heavy metal paint waste is rendered nonhazardous under the TCLP test. Specifically, this paint carrier has a lead-reactive additive thereby rendering lead-paint waste nonhazardous upon removal.
Patent CA-2259458-A1 (CA)
Title: Alignement dynamique de canevas de tube cathodique
Inventor: SIMPSON RON C
IPC: H04N17/04
Filed: 1997-05-22
Abstract: Un système d'alignement synchrone de canevas (12) de tube cathodique (CRT)(108) consiste à appliquer des signaux d'attaque rotatifs à variation temporelle à la bobine tournante (14) du tube cathodique pendant la trace du canevas. Le système peut être mis en oeuvre par des moyens soit numériques soit analogiques de mesure et de mémorisation de données de distorsions du canevas d'un tube cathodique (108), sous la forme d'un facteur de correction de rotation. Les données du facteur de correction sont utilisées par un circuit du dispositif afin de générer et d'appliquer les signaux d'attaque de rotation à variation temporelle requis à la bobine tournante du tube cathodique, afin de procéder à l'alignement voulu du canevas (107) du tube cathodique.
Patent CA-2259905-A1 (CA)
Title: Olefin polymerization process with alkyl-substituted metallocenes
Inventor: CROWTHER DONNA JEAN
IPC: C08F4/619
Filed: 1997-07-16
Abstract: The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one .pi.-bonded ring having a C3 or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent, said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two .pi.-bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.
Patent CA-2260938-A1 (CA)
Inventor: STRAUB JULIE ANN
IPC: A61K49/22
Filed: 1997-02-27
Abstract: It has been discovered that the incorporation of gases, especially fluorinated gases such as perfluorocarbons, into microparticles formed from the combination of a natural or synthetic polymer and lipid have significantly enhanced echogenicity as compared with microparticles not including the lipid.  Compounds other than lipids which are hydrophobic and limit the penetration and/or uptake of water into the microparticles can also be incorporated into the microparticles to enhance echogenicity. In the preferred embodiment, the polymers are synthetic biodegradable polymers. The microparticles are manufactured with a diameter suitable for the targeted tissue to be imaged, for example, with a diameter of between 0.5 and 8 microns for intravascular administration, and a diameter of between 0.5 and 5 mm for oral administration for imaging of the gastrointestinal tract or other lumens. Preferred polymers are polyhydroxy acids such as polylactic acid-co-glycolic acid, most preferably conjugated to polyethylene glycol or other materials inhibiting uptake by the reticuloendothelial system (RES). The most preferred lipids are phospholipids, preferably dipalmitoylphosphatidylcholine (DPPC), distearoylphosphatidylcholine (DSPC), diarachidoylphosphatidylcholine (DAPC), dibehenoylphosphatidylcholine (DBPC), ditricosanoylphosphatidylcholine, dilignoceroylphatidylcholine (DLPC), incorporated at a ratio of between 0.01-30 (w lipid/w polymer), most preferably between 0.1-10 (w lipid/w polymer).  Microparticles for imaging using other detectable agents can be similarly manufactured.
Patent CA-2262369-A1 (CA)
Inventor: BUTLER P GREGORY
IPC: B01D46/24
Filed: 1999-02-22
Abstract: A filter element which includes an annular filter media is surrounded by an external wrap in the form of preformed metal coil instead of a standard metal sleeve. The preformed metal coil has end portions in the form of circular hoops which are retained by adhesive, which adhesive is used to both seal the ends of the filter media and to retain end caps in place on the filter media. The preformed metal coil is of specific use with filter elements that are cleaned by back pulsing in industrial facilities, but is used in any situation where standard metal external sleeves are now used for filter elements.
Patent CA-2263899-A1 (CA)
Inventor: ROBERSON JAMES A
IPC: H02B1/32
Filed: 1998-06-26
Abstract: A control center (10) with a control device (14) that pivots.
Patent CA-2265352-A1 (CA)
Inventor: FUJII TAKAFUMI
IPC: A47J41/00
Filed: 1999-03-16
Abstract: The present invention relates to a thermally insulated synthetic resin container (1) and a thermally insulated synthetic resin lid (21). The synthetic thermally insulated container (1) has a thermally insulating layer (4) formed in the space between the inner container (3) and the outer container (2), which comprise at least one synthetic resin selected from among the group comprising polyester, aromatic polyamide, polyketone, polyvinylidenefluoride, acrylonytrile-type resin, and cycloolefin-type resin, with a low thermally conductive gas having a thermal conductivity lower than air sealed therein. Similarly, the thermally insulated synthetic resin lid (21) has an thermally insulating layer (24) formed in the space between the synthetic resin lower lid member (22) and the upper lid member (23). The thermally insulated synthetic resin container (1) and lid (21) can be made from only one type of resin, are easy to manufacture, and are superior in thermal insulation performance and maintaining thermal insulation performance over time.
Patent CA-2265469-A1 (CA)
Title: Flat textile structure for cleaning purposes
Inventor: DREYER CLAUDE
IPC: A47L13/16
Filed: 1997-06-28
Abstract: Flat textile structure for cleaning purposes with an all-over pile of fibers of different degrees of fineness projecting from a carrier material (12), whereby fiber regions (2, 6, 7) which consist of a plurality of individual fibers are present in the pile, the average degree of fineness of the fibers differing from the average degree of fineness of fibers in surrounding zones (1).
Patent CA-2265692-A1 (CA)
Title: Multiple network protocol encoder/decoder and data processor
Inventor: BURKES DANIEL F
IPC: H04L12/56
Filed: 1997-09-26
Abstract: A multiple network protocol encoder/decoder comprising a network protocol layer (101), data handler (102), O.S. State machine (104), and memory manager (103) state machines implemented at a hardware gate level. Network packets are received from a physical transport level mechanism by the network protocol layer state machine (101) which decodes network protocols such as TCP, IP, user Data Protocol (UDP), PPP, and Raw Socket concurrently as each byte is received. Each protocol handler parses and strips header information immediately from the packet, requiring no intermediate memory. The resulting data are passed to the data handler (102) which consists of data state machines (104) that decode data formats such as email, graphics, Hypertext Transfer Protocol (HTTP), Java, and Hypertext Markup Language (HTML). Each data state machine (104) reacts accordingly to the pertinent data, and any data that are required by more than one data state machine (104) is provided to each state machine concurrently, and any data required more than once by a specific data state machine, are placed in a specific memory location (206) with a pointer designating such data; thereby ensuring minimal memory usage.  Resulting display data are immediately passed to a display controller (205).  Any outgoing network packets are created by the data state machines and passed through the network protocol state machine which adds header information and forwards the resulting network packet via a transport level mechanism.
Patent CA-2265754-A1 (CA)
Inventor: LEMOLE GERALD M
IPC: A61F2/24
Filed: 1997-09-10
Abstract: A prosthetic heart valve, either of the mechanical type, or the bioprosthetic type, comprises a circular frame element, a check valve element and a suturing member surrounding the circular frame element. The circular frame element defines a circular opening for the passage of blood therethrough. The check valve element is connected to, and extends across, the circular frame element and is configured to substantially permit the flow of blood through the circular opening in a first direction and to substantially impair the flow of blood through the circular opening in a second direction opposite the first direction. The suturing member surrounds the circular frame element and has a first radial width in a first circumferential region substantially greater than a second radial width in a second circumferential region to define an extended portion of the suturing member. The extended portion of the suturing member can be attached to a downwardly sagging portion of a patient's valve annulus with sutures, thereby ensuring proper orientation of the valve in the patient's heart.
Patent CA-2266015-A1 (CA)
Title: Tricyclic antitumor compounds being farnesyl protein transferase inhibitors
Inventor: REMISZEWSKI STACY W
IPC: A61K31/4545
Filed: 1997-09-11
Abstract: The invention relates to tricyclic compounds of formula (1.0) wherein R1, R2, R3, R4, R5, R6, R7, R8, Y, A, B, X, a, b, c, d, v, and w are as described herein. The compounds of formula (1.0) are useful for inhibiting tumor growth being farnesyl protein transferase inhibitors.
Patent CA-2266963-A1 (CA)
Inventor: ROTH PAUL
IPC: A47L9/28
Filed: 1999-03-25
Abstract: A wet cleaning apparatus to which accessory devices can be attached has a suction blower and a control unit that automatically adjusts the power of the suction blower in accordance with the presence or absence of an accessory device or the operational state of an accessory device.
Patent CA-2267366-A1 (CA)
Title: Process for generating voltage pulse sequences and circuit assembly therefor
Inventor: VESER ALWIN
IPC: H05B41/24
Filed: 1998-06-24
Abstract: An electric circuit assembly for generating voltage pulse sequences for the operation of dielectrically inhibited discharges, comprising a series circuit provided with an oscillating circuit induction coil (TR2-A) and a controlled switch (T1), a pulse generator (OS) controlling said switch (T1), a current valve (D1) mounted in parallel to said switch (T1), a feedback capacitor (C2) also mounted in parallel to said switch (T1), an element (TR2-B, a", b") for coupling a lamp (La1) to at least one dielectrically inhibited electrode and optionally a feedback buffer capacitor (C1) mounted in parallel to said series circuit provided with said oscillating circuit induction coil (TR2-A) and said controlled switch (T1). The coupling element of a lamp particularly includes two terminals (a", b") and the secondary winding (TR2-B) of an autotransformer (TR-2) mounted between a first pole of said switch (T1) and the associated terminal (a"), wherein the primary winding (TR2-A) of said autotransformer (TR2) acts as an oscillating circuit induction coil. The second terminal (b") is connected to the second pole of said switch (T1). In operation, said switch (T1) opens and closes alternately according to the control signal rate of the pulse generator (OS), in order to generate a sequence of voltage pulses separated by interruption times at the dielectrically inhibited electrodes of a lamp connected to the terminals (a", b").
Patent CA-2269549-A1 (CA)
Inventor: YAMASAKI SHOICHIRO
IPC: H04L27/26
Filed: 1998-08-24
Abstract: A multi-carrier transmitter, wherein a DET (28) finds the locations where clip distortions occur when a received multi-carrier signal is converted into a digital signal and the number of clip distortions by means of an A/D (22) from the output of the A/D (22) while regarding the clip distortions as additional noise. Then substractors (26, 27) find the difference values between the information symbols at both ends of a received block signal on a frequency axis outputted from a DFT (24) and a known zero symbol, and a CAN (25) estimates the magnitudes of the clip distortions from the difference values and the locations and number of clip distortions and eliminates the clip distortions.
Patent CA-2272702-A1 (CA)
Inventor: FLEWITT HARRY
IPC: A61K9/44
Filed: 1997-11-24
Abstract: A pharmaceutical tablet having a break line aligned across a long dimension of the tablet such that a twisting action, in which parts of the tablets on opposite sides of the break line are subjected to rotational twisting force in respectively opposite senses, causes the tablet to break along a line substantially following the break line, into two or more parts. Preferably the shape comprises two lobes on either longitudinally disposed side of the longitudinal mid-point of the tablet, with a waist in between which is narrower in width than the widest part of each lobe. The tablet is preferably broken by the user using a twisting action.
Patent CA-2272757-A1 (CA)
Title: Suture lock and suture lock holder
Inventor: PAGEDAS ANTHONY C
IPC: A61B17/04
Filed: 1999-05-20
Abstract: A molded plastic one-piece self adjusting self locking suture lock to be used with surgical suture thread and suture needle, said self adjusting self locking suture lock comprising: a body having a front side, a back side, a first edge, a thread retaining opening, and a stitch lock opening; the thread retaining opening having a thread opening slightly smaller in diameter than said suture thread and a slot extending outwardly from said thread opening to said first edge. The stitch lock opening being night cylindrical and having an outer edge on said front side. The body having a plurality of integral tongues connected to said outer edge of the stitch lock opening near said front side and extending diametrically inward at an angle from said front side toward said back side. The tongues being of sufficient dimension and number to occupy substantially the entire circumference of the outer edge. Each of said tongues having a conical sectional shape such that the plurality of tongues connected near the outer edge of the front side form a conical structure having an approach opening on this front side larger than an exit opening on the back side.
Patent CA-2274293-A1 (CA)
Inventor: ASAMI HIDEAKI
IPC: C09D11/18
Filed: 1999-06-09
Abstract: Disclosed is a water-based ball-point pen ink composition which gives a smooth writing touch and shows various satifactory writing performance, comprising a colorant, water, and as an agent for imparting shear-thinning properties at least one member selected from sulfosuccinates represented by the following general formula (1):   (see formula I) wherein each R represents an alkyl or alkenyl group having 7 to 18 carbon atoms and X represents an alkali metal or an amine, the content of the at least one member being from 5 to 50% by weight.
Patent CA-2275912-A1 (CA)
Inventor: PESACHOVICH MICHAEL
IPC: C07C229/28
Filed: 1997-12-24
Abstract: There is disclosed a method of converting gabapenting hydrochloride substantially free of inorganic salts to gabapenting form II. The method comprises the steps of: (1) obtaining gabapentin hydrochloride that is substantially free of inorganic salts; (2) mixing a solution of the gabapenting hydrochloride with an additional amine in a first solvent so as to obtain a precipitate comprising gabapenting; and then (3) recovering gabapentin form II from the precipitate. The precipitated gabapentin is a novel polymorphic form of gabapentin possessing a crystalline structure characterized by novel sets of peaks in the powder X-ray diffraction pattern and in the FTIR spectra. This newly disclosed polymorph of gabapentin is characterized herein as gabapentin form III. The recovery step may comprise, for example, one of two alternative methods, slurrying the gabapentin form II  in methanol, and then filtering the suspension to obtain gabapentin form II, or solubilizing the gabapentin form III in methanol with heating by reflux, and then cooling the solution to obtain gabapentin form II by crystallization.
Patent CA-2277767-A1 (CA)
Inventor: JOHNSON TROY A
IPC: D06F37/26
Filed: 1999-07-20
Abstract: A boot drain for horizontal axis washing machines includes an elongated hollow tube with a forward end disposed within a lower portion of the boot, and a rearward end disposed within the tub to drain fluid from the lower portion of the boot into the tub.      Preferably the tube has an inverted U-shape which creates a siphon to remove pooled liquid within the boot and to transfer the liquid to the tub.
Patent CA-2280544-A1 (CA)
Title: Apparatus for processing flexible, sheet-like products
Inventor: STAUBER H ULRICH
IPC: B65H29/68
Filed: 1999-08-20
Abstract: An apparatus (10) for conveying flexible sheet-like products wherein a plurality of conveying elements (12) are arranged one behind the other on a rotatable support member in a circular array, and each conveying element comprises a roller segment (24), which is driven continuously in the direction of rotation (D), and a mating element (26), which interacts with the roller segment. In the product receiving region (14), a recess section (44) of the respective roller segment (24) forms, with the mating element (26), an introduction gap (48), of which the leading end is closed. The forward position of the recess section (44) forms a stop (62) for engaging the leading edge (52) of the fed product (19). At about the same time as the leading edge (52) comes into contact with the stop (62), a lateral-surface section (46) following the recess section (44) forms, together with the mating element (26), a conveying gap (54) in which the product (19) is retained in order to be transported further through the conveying element (12).
Patent CA-2281679-A1 (CA)
Title: Garniture mecanique texturee permettant une reduction de l'usure
Inventor: HART DOUGLAS P
IPC: F16J15/34
Filed: 1998-02-23
Abstract: La présente invention concerne un joint (10), une surface de contact texturée par endroits (41, 41', 41'', 41'''). La surface de contact (36) étanchéifie correctement et est résistante à l'usure. La surface de contact (36) est susceptible de s'adapter à des conditions très dures, telles que celles que l'on trouve dans des applications de terrassement.
Patent CA-2284720-A1 (CA)
Title: Methods and apparatus for transmyocardial direct coronary revascularization
Inventor: LAMSON THEODORE C
IPC: A61B19/00
Filed: 1998-04-13
Abstract: Methods and apparatus for direct coronary revascularization wherein a transmyocardial passageway is formed between a chamber of the heart and a coronary blood vesel to permit blood to flow therebetween.  In some embodiments, the transmyocardial passageway is formed between a chamber of the heart and a coronary vein. The invention includes unstented transmyocardial passageways, as well as transmyocardial passageways wherein protrusive stent devices extend from the transmyocardial passageway into an adjacent coronary vessel or chamber of the heart. The apparatus of the present invention include protrusive stent devices for stenting of transmyocardial passageways, intraluminal valving devices for valving of transmyocardial passageways, intracardiac valving devices for valving of transmyocardial passageways, endogenous tissue valves for valving of transmyocardial passageways, and ancillary apparatus for use in conjunction therewith.