baber/WOPTO huggingface dataset:
Patent CA-2193947-A1 (CA)
Title: An apparatus for operational cleaning of dental handpieces
Inventor: MORGENSTJERNE PER
IPC: A61C19/00
Filed: 1995-06-28
Abstract: An apparatus for operative cleaning and preparation of dental handpieces is made as an integrated unit having holding stubs (6) for receiving the handpieces inside a treating chamber (1, 30), which is designed in a pressure resisting manner and with heating means (12, 56) such that it is directly usable for autoclave treatment of the handpieces. Through the holding stubs (6) and in accordance with a control program it is possible to supply warm water and oil to the respective channels in the handpieces. The apparatus may appear as a table unit (32) holding all what is required for a complete cleaning, lubrication and sterilization cycle.
Patent CA-2194001-A1 (CA)
Title: Starch Graft Copolymer from Prime Starch
Inventor: FISK DONALD
IPC: C08G81/02
Filed: 1995-06-29
Abstract: The use of prime starch to make a starch graft copolymer allows the resulting starch graft copolymer to be extruded with reduced torque and pressure as compared to a starch graft copolymer made from conventional dried starch. The starch graft copolymer is especially useful for making a biodegradable foamed product.
Patent CA-2195738-A1 (CA)
Inventor: WARREN DAVID W
IPC: F26B3/18
Filed: 1997-01-22
Abstract: The invention comprises a process and an apparatus for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquified eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface.      Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciately stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers.
Patent CA-2197596-A1 (CA)
Inventor: MAYER WOLFGANG
IPC: D21F7/02
Filed: 1997-02-14
Abstract: The invention relates to an apparatus to produce a layer of material, such as paper, carton or cardboard.  A number of cylinders and rollers carry the continuous layer of material along a meandering path.  A cleaning tool acts upon the surface of at least one of the rollers and/or cylinders.  The cylinder or roller whose surface the cleaning tool is affecting is mounted so that it is allowed to move in an oscillating fashion relative to the cleaning tool in the direction of the axis of rotation of the cylinder or roller.
Patent CA-2197986-A1 (CA)
Title: Medical diagnosis, treatment and imaging systems
Inventor: BEN-HAIM SHLOMO
IPC: A61B5/366
Filed: 1995-01-24
Abstract: A locating system for determining the location and orientation of an invasive medical instrument, for example a catheter (10) or endoscope, relative to a reference frame, comprising: a plurality of field generators ( 18, 20, 22) which generate known, distinguishable fields, preferably continuous AC magnetic fields, in response to drive signals; a plurality of sensors (30, 32, 34) situated in the invasive medical instrument (10) proximate the distal end thereof which generate sensor signals in response to said fields; and a signal processor (26) which has an input for a plurality of signals corresponding to said drive signals and said sensor signals and which produces the three location coordinates and three orientation coordinates of a point on the invasive medical instrument.
Patent CA-2200338-A1 (CA)
Inventor: THOMPSON STEPHEN JAMES
IPC: C07K14/35
Filed: 1995-09-27
Abstract: L'invention concerne des fragments de polypeptides d'un nombre de restes d'acides aminés égal ou supérieur à 9, qui comprennent la séquence VVNKIRG (SEQ ID NO.107), leur utilisation dans la prévention, le diagnostic et le traitement de maladies auto-immunes, telles que la polyarthrite rhumatoïde, ainsi que des procédés de préparation de ces fragments.
Patent CA-2200570-A1 (CA)
Title: Use of muramyl peptide compounds
Inventor: ASTON ROGER
IPC: A61K31/70
Filed: 1995-09-20
Abstract: Certain muramyl peptide derivatives such as GMDP find particular use in the treatment of ophthalmic conditions such as herpetic keratitis and herpetic keratouveitis. The muramyl peptide derivatives are particularly useful for reducing or preventing corneal scarring which may occur as a result of conditions such as keratitis. Treatment with muramyl peptide compounds may be used in addition to treatment with other drugs.
Patent CA-2202352-A1 (CA)
Title: Pressure oxidation process for the production of molybdenum trioxide from molybdenite
Inventor: COLTRINARI ENZO L
IPC: C01G39/00
Filed: 1995-10-10
Abstract: Molybdenum trioxide is produced from molybdenite by a pressure oxidation process comprising of the steps of forming an aqueous slurry of molybdenite, pressure oxidizing the slurry to form soluble and insoluble molybdenum species, converting the insoluble molybdenum species to soluble molybdenum species by alkaline digestion, separating the soluble molybdenum species from insoluble residue contaminants (if present), removing the molybdenum species from the aqueous media through solvent extraction, and recovering the molybdenum values as molybdenum trioxide from the organic solvent. Low grade molybdenite concentrates, including concentrator slimes containing talc and sericite, can be used as a feed. The process produces technical grade molybdenum trioxide.
Patent CA-2203498-A1 (CA)
Inventor: LIN KAUNG-FAR
IPC: C07C2/30
Filed: 1997-04-23
Abstract: Vinylidene olefin can be formed in good yield and high selectivity in much shorter reaction periods than found critical heretofore. The process involves dimerizing vinyl olefin with at least one trialkylaluminum compound as the sole catalyst component charged to the reaction vessel. These materials are charged to the reactor so that it contains in the range of 0.001 to 0.5 mol of trialkylaluminum per mol of the initial vinyl olefin. The reaction is performed at a temperature in the range of 100° to 200°C for a period of time sufficient to convert 10 to 99% by weight of the initial vinyl olefin to a different product and form a product mixture with at least 80 wt % vinylidene dimer selectivity. In conducting the process the liquid mixture in the reactor is maintained in direct contact with passivated ferrous metal such as low nickel ferrous metal or steel alloy interior surfaces during at least 90 percent of the total period of time during which the reactor contents are at a temperature above about 50°C.
Patent CA-2203580-A1 (CA)
Inventor: FRISCH HERBERT
IPC: F15B15/20
Filed: 1997-04-24
Abstract: In  a  pneumatic  control  system  having  several  consuming elements  (1),  the working chambers  (7,  8)  of which are connected via pressure lines (2) with electrically operated changeover elements  (6) which,  in turn, are connected via pressure supply lines (11) with a common pressure source and via electric signal lines (10) with a common control unit (19), is provided to facilitate, in particular, the assembly or making of the necessary connections, that the changeover element  (6)  together with the pressure lines  (2)  to the working chambers (7, 8) are each arranged directly on the consuming devices (1) while forming a consuming unit (9) and that the electric signal lines (10) and the pressure supply line (11) of each consuming unit (9) extend in a combination line (12), joined between the consuming unit (9), on the one hand, and with an air-inlet/signal distributor (13) connected with the pressure source and the control unit (19), on the other hand.
Patent CA-2207796-A1 (CA)
Title: Electrical device box for mounting in a clean room
Inventor: MCEWAN BOYD L
IPC: H02B1/28
Filed: 1997-06-17
Abstract: An electrical device box to mount an electrical device such as a wall switch in a clean room. The device box is of seamless, stainless steel construction, having side walls, end walls and a back wall defining a housing with a planar front opening. Device flanges are recessed within the front opening for mounting the electrical device. A sealing gasket is fitted over the front opening with the electrical device installed therein. The box can be readily cleaned using the usual harsh and abrasive cleaning materials in a clean room wash-down. The box has no cracks, crevices or other openings to collect dirt and permit bacterial growth.
Patent CA-2209602-A1 (CA)
Inventor: SOBELMAN GERALD E
IPC: H03M5/16
Filed: 1996-01-05
Abstract: Une porte à seuil (921) à valeur nulle déterminée par convention reçoit une pluralité d'entrées (X1, X2, ... Xn), chacune de ces entrées ayant un état excité et un état NUL. La porte à seuil change sa sortie (Z) en état excité lorsque le nombre d'entrées excitées dépasse un certain seuil. La porte à seuil change sa sortie en état NUL uniquement une fois que toutes les entrées sont revenues à la valeur NULLE. Les états des signaux peuvent être mis en oeuvre comme des niveaux d'intensité distincts.
Patent CA-2209873-A1 (CA)
Title: Slope working machinery
Inventor: OKAMOTO TOSHIHITO
IPC: E21B7/02
Filed: 1997-07-07
Abstract: A slope working machinery which moves and travels safely on t he slope has a suspension device having at least one of a winch and a driving device attached to a body thereof, has a work stand to work on the working machine capable of keeping nearly horizontally and to use to carry bagagges, whereby working on a steep slope can be conducted with much ease and safe.
Patent CA-2210325-A1 (CA)
Inventor: THEDE ROGER C
IPC: A61B5/021
Filed: 1995-12-01
Abstract: L'invention se rapporte à un procédé et appareil (20) destinés à calculer la tension artérielle à partir du pouls d'une artère. Le procédé consiste à appliquer une pression variable à l'artère. Des courbes de pression (450) sont détectées afin de générer des données de signaux de pression. Des paramètres de signaux (510, 530) sont dérivés à partir des données des signaux de pression qui ont été captés. La tension artérielle s'obtient au moyen des paramètres dérivés.
Patent CA-2212340-A1 (CA)
IPC: E04F21/165
Filed: 1997-09-12
Abstract: A troweling tool for troweling an initial extrusion of caulking material positioned at the intersection of a pair of angled surfaces. The troweling tool includes a containing wall that defines a containing surface. The containing surface has a generally concave configuration. It defines a wall proximal edge and an opposed wall distal edge. In turn the wall distal edge defines a pair of edge end sections. The containing surface also defines a trimming edge extending from each of the edge end sections towards the wall proximal edge. The edge end sections and the trimming edges extend in a common geometrical plane. The containing surface defines a storage chamber delimited by the wall proximal edge, the wall distal edge and the trimming edges. A pair of wings extends outwardly from at least a section of the trimming edges at an angle relative to the common geometrical plane. A plurality of serrations are formed on the wings. The serrations define scrapping edges for scrapping caulking material positioned outside the trimming edges. The serrations also define channels in fluid communication with the storage chamber used for storing caulking material overflowing from the later. The stored caulking material is used for replenishing depleted regions of the initial extrusion.
Patent CA-2212351-A1 (CA)
Inventor: KIM SEUNG-WOOK
IPC: B65D5/54
Filed: 1997-08-01
Abstract: A corrugated board packaging box including an opening portion which is formed on a front surface portion of a box body, through which commodities are taken in and out.  On both sides of the front surface portion, a cut-off portion is formed to be cut off by a cutting line, defined by a vertical supporting member disposed on the intermediate portion of the front surface, and on an edge of the one side of said cut-off portion, a cut-off protrusion is disposed by forming an inclined cutting line.
Patent CA-2213574-A1 (CA)
Inventor: LEPOFSKY MICHAEL
IPC: F16L3/04
Filed: 1997-08-20
Abstract: A substrate mountable and expandable conduit retainer for holding one or more wires, cables, pipes and tubes to a wall or joist comprising: (a) a first flexible elongate planar member having a first outer surface, a first inner surface, a first terminal portion and a first end portion; (b) a second flexible elongate planar member having a second outer surface, a second inner surface, a second terminal portion and a second end portion; (c) means for retaining said first and second terminal portions in adjacent and overlapping relationship one to the other; (d) means for effecting longitudinal displacement of said first and second portions relative one to the other; (e) said first member and said second member adapted to be mountable on a substrate surface, whereby said first and second inner surfaces with said substrate surface define a semi-circular conduit-receiving aperture and said longitudinal displacement of said first and second portions varies the diameter of said conduit-receiving aperture. The retainer obviates the need for replacement of a standard prior art retaining clip with a retaining clip of a different size.
Patent CA-2213726-A1 (CA)
Inventor: WEISENFELD ROBERT BELLER
IPC: C07F9/38
Filed: 1996-01-25
Abstract: A process is provided for selectively converting formaldehyde in an acidic organic waste aqueous stream in the most part to formose sugars rather than to alkali metal formate and methanol by reacting the stream with a strong alkali base to provide a pH of at least about 8.5 and heating the resulting basic solution to a temperature of at least about 80 ~C. The formaldehyde is present in the waste stream in amounts between about 1000 ppm to 10,000 ppm.
Patent CA-2214495-A1 (CA)
Title: Hydrated zirconium silicate composition for purification of nucleic acids
Inventor: WOODARD DANIEL L
IPC: C01G25/00
Filed: 1997-09-03
Abstract: The present invention relates to a unique hydrated zirconium silicate composition which binds nucleic acids. The composition is useful in processes for purifying nucleic acid from a sample.
Patent CA-2215009-A1 (CA)
Inventor: SHERWOOD GEOFFREY C
IPC: B41J2/52
Filed: 1997-09-04
Abstract: A method of halftoning a sample value from an intensity range including the steps of providing threshold arrays having threshold values from distinct ranges, one of which is the same as the intensity range, selecting the one with the same range as the intensity range and using the selected threshold array to halftone the sample value.  Embodiments may include the following features. The threshold arrays are a first one having a first threshold value range and a second one having a second threshold value range that has more levels than does the first threshold value range.  The first threshold array is built by scaling each value in the second threshold array down to the range of the first threshold array. The scaling is done by dividing by 257 and rounding up to the next whole number.  The first threshold array has a threshold value range of zero to 255 and the second threshold array has a threshold value range of zero to 65535 or zero to 4095.  Tone correction is performed using a transfer function mapping an 8-bit input sample value to a tone-corrected output sample value having more than 8 bits.
Patent CA-2222373-A1 (CA)
Title: Multigrade crankcase lubricants with low temperature pumpability and low volatibility
Inventor: DOWLING MICHAEL
IPC: C10N10/04
Filed: 1996-06-25
Abstract: The detergent inhibitor package has been found to influence the viscometric properties of SAE 5W lubricants that have less than 5 mass % of non-coventional basestock, use a basestock that has an average base stock neutral number not less than 105, a calibrated Noack volatility of not more than 22 wt.% loss, and a kinematic viscosity at 100 °C (kV 100, measured by ASTM D445) less than 12.5 cSt. In particular, neutral and overbased calcium salts of orgnaic acids have been found to increase low temperature high shear viscosity when measured in the CCS (ASTM D5293). These salts which are widely used for their detergency and acid neutralization properties should be avoided altogether or used at a level not exceeding 0.0007 moles of organic calcium salt per 100 grams of lubricant. Where diesel performance is required, for example to lubricate passenger car diesel engines, a calcium salt of an organic acid may be required to control piston deposits. In that circumstance the level of calcium salt should be kept between 0.0004 and 0.0007 moles per 100 grams of lubricant.
Patent CA-2226076-A1 (CA)
Title: Wooden container
Inventor: BOUTON-HUGHES PHILIPPE
IPC: B65D85/34
Filed: 1996-06-07
Abstract: PCT No. PCT/FR96/00870 Sec. 371 Date Apr. 24, 1998 Sec. 102(e) Date Apr. 24, 1998 PCT Filed Jun. 7, 1996 PCT Pub. No. WO97/02990 PCT Pub. Date Jan. 30, 1997A method for preparing a food product to be cooked or reheated in a thermal oven, wherein the food is placed in a container made of a single peeled-wood blank that is folded and assembled at the folded side walls thereof. A tray particularly suitable for use in the method is also disclosed.
Patent CA-2230017-A1 (CA)
Title: Hydrogen cyanide process and apparatus therefor
Inventor: COWELL CHRISTOPHER
IPC: B01J8/02
Filed: 1996-08-29
Abstract: A catalytic process and apparatus therefor for the manufacture of hydrogen cyanide. In the process an oxygen rich oxidant stream and at least one oxidant-free feed stream containing methane and ammonia are separately preheated and rapidly mixed to form a detonable mixed stream at a temperature which is at least 50 °C below the autoignition temperature of the mixed stream. The mixed stream is then conveyed to a catalyst capable of catalysing the formation of hydrogen cyanide at such a velocity that detonation is avoided. The process is more energy efficient and gives rise to an effluent stream containing more hydrogen than the conventional Andrussow process.
Patent CA-2232159-A1 (CA)
Inventor: O'DONNELL ADRIAN CHARLES
IPC: H04B10/077
Filed: 1996-09-13
Abstract: A method of and apparatus for controlling the relative amplitudes of the individual wavelength components of a wavelength division multiplexed optical signal (14) employs an adaptive optical wavelength filter (20) through which the optical signal (14) is transferred. The filter (20) is controlled dependent upon an analysis of the powers of the individual wavelength components (.lambda.1, .lambda.2...) of the optical signal so that the output powers may be balanced to have some predetermined relationship. One of a plurality of in-line optical filters, a demultiplexer and a further adaptive optical wavelength filter may be employed to analyse the powers of the wavelength components of the optical signal.
Patent CA-2232346-A1 (CA)
Title: Coordinating telephones or adjuncts on the same loop
Inventor: BECKER CHRISTOPHER HENRY
IPC: H04M1/715
Filed: 1996-09-19
Abstract: When two or more telephone sets are in use on the same subscriber's loop, their activities may not be properly detected or monitored by the central office switch. The present invention provides a method of and an apparatus for coordinating activities so that call waiting caller ID or off-hook caller ID  or other service features can work even if there are off-hook extensions on the same loop. The invention ensures that only one set among a plurality of off-hook sets responds to the switch.
Patent CA-2232909-A1 (CA)
Inventor: BYCHKOWSKY MARK
IPC: G01F23/04
Filed: 1998-03-19
Abstract: A dipstick wiping device for use in measuring fluid reservoir levels in an internal combustion engine is described. The dipstick wiping device comprises a pliable converging tubular body, a fluid wiping element and mounting means. The fluid wiping element comprises a sponge removably mounted around the inner surface of the body by a locking ring. The dipstick wiping device is connected to a dipstick tube by first removing the dipstick from the dipstick tube and then fitting the mounting means over the end of the dipstick tube. The mounting means includes a tie strap for locking the dipstick wiping device into place. The tie strap allows the dipstick wiping device to be mounted on a variety of dipstick tubes, regardless of the diameter of the dipstick tube. The dipstick is then reinserted into the dipstick tube by passingthe dipstick through the body. In operation, the user removes the dipstick from the dipstick tube while applying pressure to the outer surface of the pliable converging tubular body. This pressure forces the fluid wiping element inward such that the sponge cleans the dipstick during removal. The pressure is then released and the clean dipstick is reinserted into the dipstick tube to measure the fluid level. Of note is that the dipstick wiping device is designed as an add-on device and all factory-installed components are retained, thereby minimizing the risk of contamination to the fluid.
Patent CA-2233734-A1 (CA)
Inventor: RICHIED JOAN MARIE
IPC: H04Q3/00
Filed: 1998-03-31
Abstract: A telecommunications system that recognizes "post-fix" codes after directory numbers are dialed. Such post-fix codes provide the calling party with the ability to invoke features or functions before the call is routed. By use of a post-fix code (for example, *X or *XX) the caller may, for example, control routing of a telephone call.
Patent CA-2234491-A1 (CA)
Title: Preparation of bioactive compounds by plasma synthesis
Inventor: FRIESEN DWAYNE T
IPC: B01J19/08
Filed: 1998-04-09
Abstract: Large numbers of bioactive compounds of great chemical diversity may be rapidly prepared by subjecting organic compound mixtures to a plasma discharge, followed by screening for specific bioactivity.
Patent CA-2237080-A1 (CA)
Inventor: ERLANDSON DONALD
IPC: A01K69/06
Filed: 1998-05-07
Abstract: An improved Fish and Crustacean Trap Escape Vent System, consisting of an inexpensive conical-shaped escape vent with minimal water current noise or resistance, which presents a diminishing perspective to fish and crustaceans in the trap, secured to the trap with Coded, Corrosive-Release Fasteners of different diameters, thereby allowing for easy recognition by fishermen and enforcement authorities of which diameter of fasteners is in use. Coding means includes offsets, crimps or color-coating imparted to different Fasteners. If the trap is lost or unrecovered for a predetermined time, the Coded Corrosive-Release Fasteners completely disintegrate and allow the Escape Vent to detach from the trap and allow any trapped fish and crustaceans to escape the trap. The unrecovered trap is now theoretically prevented from further fishing. The Escape Vent remains attached to the trap by conventional hog rings, and can be reused if and when the trap is recovered. Corrosive-Release Fasteners of different diameters and/or compositions can be tested in each locale. Regulations can then specify the wire diameter, composition, and method of coding the Corrosive-Release Fastener which is to be used in specific geographic areas.