baber/WOPTO huggingface dataset:
Patent CA-2240212-A1 (CA)
Title: Semipermeable encapsulated membranes with improved acid and base stability process for their manufacture and their use
Inventor: KETRARO REUVEN
IPC: B01D71/56
Filed: 1998-06-09
Abstract: A process for the preparation of semipermeable membranes with improved acid and base stability including: (a) coating a base and acid stable ultrafiltration (UF) membrane support polymer, with a high molecular weight amphoteric polyelectrolyte coating polymer optionally in solution, the amphoteric polyelectrolyte containing both cationic and anionic groups and in addition primary and secondary amine groups, the solution optionally containing a latent internal crosslinker compound that is a polyfunctional compound that crosslinks the coating polymer only during a curing step at elevated temperatures and basic pH; (b) draining or washing the coated support; (c) reacting the coating with a solution of an external crosslinking compound that is a polyfunctional compound, not overly reactive so as not to be hydrolyzed prematurely in solution, the time of exposure to the external crosslinking compound being sufficient to ensure its diffusion into the bulk of the coating, so that the crosslinking is effected not only on the solution polymer coating interface, but throughout the bulk of the coating as well.      The sequence (a)-(c) may optionally be repeated a number of times to give multiple crosslinked layers;     (d) draining or washing the coated UF support; and (e) curing the coated membrane by heating at an elevated temperature and basic pH to complete crosslinking by the external crosslinking molecule and if present, also effect crosslinking by the latent internal crosslinker, that is primarily activated only at the elevated temperature conditions.
Patent CA-2240590-A1 (CA)
Title: Tampon having improved early expansion characteristics
Inventor: MARTENS NICOLAS
IPC: A61F13/20
Filed: 1996-12-20
Abstract: A tampon formed of a substantially cylindrical mass of compressed fibers substantially enclosed in a fluid-permeable cover has improved ability to prevent early leakage. This tampon has a stability of at least about 15 N, and is capable of radially expanding upon exposure to a humid environment. The radius increases by at least about 10 % after 15 minutes to 90 % relative humidity at 40 °C.
Patent CA-2241318-A1 (CA)
Title: Medical cleaning and sterilizing apparatus
Inventor: LANGFORD TERRENCE R
IPC: A61B19/00
Filed: 1996-12-31
Abstract: An improved apparatus which can be used for cleaning and/or sterilizing tubular items. A container (8) is partitioned into two chambers (9A and 9B) with the item to be cleaned and/or sterilized positioned to extend through the partition (18) such that one opening lies in one chamber and another opening lies in the other chamber.     Pressure is applied to one chamber forcing the liquid to surge into the second chamber. The surging effect is facilitated through the use of either a flexible membrane (20) in the second chamber, or the use of dual pistons which are one hundred eighty degrees out of synchronization such that one chamber is being pressurized while the second chamber is being depressurized.
Patent CA-2242847-A1 (CA)
Inventor: CHATHAM KENNETH
IPC: A63B23/18
Filed: 1996-11-28
Abstract: An apparatus for testing the respiratory ability of a subject, comprises a unit (10) through which the subject can inspire, the unit (10) including a pressure sensing device connected to a data processing unit (20). The data processing unit is arranged to compare the time-varying pressure, or a parameter thereof, with a prestored target.
Patent CA-2246087-A1 (CA)
Inventor: ESTE GRANTLEY OLIVER
IPC: H01L21/762
Filed: 1998-08-28
Abstract: A method of cleaving a semiconductor wafer comprises a deep ion implantation induced selective area exfoliation.      The method includes steps of selectively masking the material with a mask having straight edges parallel to natural cleavage planes of the semiconductor material, implanting unmasked regions of the material with light ions of hydrogen or helium, and annealing to cause exfoliation of the material from the implanted regions. As a result of exfoliation, the patterned structure remaining on the wafer and pieces of the exfoliated material have high quality sidewall-facets which provides cleaved facets along the cleavage planes of the material. A method of manufacturing optoelectronic devices and semiconductor laser devices is provided.
Patent CA-2248051-A1 (CA)
Title: Remplissage poreux ou a soufflures dans des articles formes par procede de depot par pulverisation
Inventor: ROCHE ALLEN DENNIS
IPC: C23C4/12
Filed: 1997-03-04
Abstract: La présente invention consiste à remplir des régions poreuses ou des régions soufflurées d'articles faits d'une composition et réalisés par dépôt par pulvérisation, le remplissage se faisant au moyen d'un matériau en fusion dont la composition est différente et qui se solidifie ultérieurement. En s'écoulant, le matériau en fusion s'infiltre dans les régions poreuses ou soufflurées par capillarité ou sous l'effet d'une pression exercée de l'extérieur. En règle générale, le matériau de pulvérisation est un matériau métallique en fusion, et le matériau de remplissage des pores ou des soufflures est également un matériau de composition métallique, mais dont le point de fusion est plus bas.
Patent CA-2250184-A1 (CA)
Title: Assembly of nestable wheelchairs and wheelchair for use in such an assembly
Inventor: BEUMER STEPHANUS THEODORUS ANT
IPC: A61G5/00
Filed: 1997-03-26
Abstract: Assembly of at least two wheelchairs, each provided with at least three wheels, a frame and a sitting support, wherein the wheelchairs are nestable, in such a manner that the wheelchairs in a nested condition occupy considerably less space than in unnested condition, while the wheelchairs upon being unnested are substantially directly ready for use, and an assembly wherein two wheelchairs in the assembly in nested condition occupy a floor area, preferably a floor area which is at most 90 %, preferably less than 75 % and in particular less than 60 % of the floor surface occupied by the same two wheelchairs in unnested condition.
Patent CA-2250601-A1 (CA)
Title: Laser jigging system for assembly of trusses and method of use
Inventor: BUCK CARL EDWARD III
IPC: B23Q17/24
Filed: 1998-10-16
Abstract: A laser jigging system that projects the location of the jigging hardware so that an operator can easily, quickly, and precisely position the jigging hardware on the work-surface prior to positioning any truss members on the work-surface is described. More particularly, the system projects puck and other jigging hardware alignment or location guides on the table work-surface. With the alignment guides projected on the table, the pucks and other jigging hardware are located in alignment with the projected guides, and secured to the table.  The truss members are located on the table in accordance with the pattern defined by the jigging, and connector plates are then engaged with the truss members.
Patent CA-2252407-A1 (CA)
Title: Flexible integrated circuit package
Inventor: DAVIES BILL TEMPEST
IPC: H01L23/498
Filed: 1998-11-03
Abstract: A flexible integrated circuit package for mounting on a substrate is disclosed. The package consists of a tape film having layers of dielectric and conductive material, a semiconductor die and an array of conductive leads. A molded body covers the die, and absorbs the majority of the pressure applied when compressing the package between a heatsink and a printed-circuit board (PCB). Rigid removable support material surrounds the molded body to keep the package flat while it is being mounted to the PCB. The support material is removed after soldering of the package to the PCB. The invention permits the package to be tightly compressed between a heatsink and a substrate without causing degradation of the conductive connections. Reliability of the connections is further increased since the tape film is flexible enough to accommodate bending of the substrate to which the package is connected.
Patent CA-2259259-A1 (CA)
Inventor: MARTIN DIDIER
IPC: B65D51/20
Filed: 1997-06-26
Abstract: L'invention concerne un étui (8) de rebouchage pour récipient tel que boîte à boisson à ouverture (6) par obturateur frangible (5) grâce à une languette de tirage (7) revêtue sur le couvercle ledit étui (8) qui est monté d'une manière amovible sur ou autour de ladite languette de tirage (7) pour constituer une patte mobile pivotant autour du rivet (9) sur le couvercle (4) pour se clipper autour de l'ourlet périphérique (12) de sertissage du couvercle (4) sur le corps (1) du récipient est caractérisé en ce que des moyens de clippage comportant deux pattes de liaison élastique (13, 14) disposées dans le plan horizontal médian P de l'étui (8) symétriquement de part et d'autre de l'axe de symétrie longitudinale S pour former un espace (15) dans lequel s'étend un ergot (16), issu d'une barrette horizontale (17) réunissant les extrémités libres de démoulage des deux pattes (13, 14). L'invention concerne aussi l'application de l'étui (8) comme vecteur de communication ou élément de jeu.
Patent CA-2259423-A1 (CA)
Title: Beneficiation of furnace dust for the recovery of chemical and metal values
Inventor: MYERSON ALLAN S
IPC: C22B19/28
Filed: 1997-06-26
Abstract: A process for beneficiation of an electric arc furnace dust is disclosed. EAF  dust (101) is briquetted with coal (60). The briquettes (64) are added to a furnace (12) along with a scrap metal charge (400). Zinc oxide fume (102) is driven off and collected for hydrometallurgical processing (100). Any iron containing insolubles (68) recovered from that process are added to the briquetting mix (60). A product solution (74) is processed (300) to recover zinc. Any iron insolubles (86) may be reintroduced into the briquetting process (60).
Patent CA-2260113-A1 (CA)
Inventor: JOHNSON ALAN GRANT
IPC: B43K25/00
Filed: 1999-01-19
Abstract: A holder for a writing instrument includes, in combination, a magnet and a metallic plate. The magnet is secured to either a writing instrument or an article of clothing, preferably a hard hat or baseball cap. The metallic plate is secured to the other of the writing instrument or the article of clothing. The writing instrument is magnetically held until a force is exerted to overcome the magnetic attraction between the magnet and the metallic plate.
Patent CA-2260733-A1 (CA)
Inventor: CHANG JAMES SHIH-TSIH
IPC: B60R16/02
Filed: 1999-02-04
Abstract: An apparatus for determining a road pavement surface condition over a wide area has a road noise sensor (12). A temporal frequency analyzer (18) converts a road noise signal from the road noise sensor (12) to a temporal frequency signal. A processing circuit (20) receives the temporal frequency signal from the temporal frequency analyzer (18) and analyzes the temporal frequency signal to determine the road pavement surface condition.
Patent CA-2262561-A1 (CA)
Title: Olefin hydroformylation process in a two-phase system
Inventor: WALDVOGEL SIEGFRIED
IPC: C07H15/14
Filed: 1997-07-29
Abstract: A process for hydroformylating terminal and internal olefins in a two-phase system uses new metal catalysts. The two-phase system consists of an aqueous and an organic phase. The metals belong to group VIII of the periodic table of elements: Rh, Ru, Ir, Co or Pd. The ligands for the metals are novel, watersoluble, phosphane-modified .beta.-cyclodextrines.
Patent CA-2265909-A1 (CA)
Inventor: ZIMMERMANN HEINRICH
IPC: F16H57/02
Filed: 1997-09-12
Abstract: The present invention relates to an intermediate system for associating an operating shaft (9) in an electrical motor to a driven system, especially a pinion gear. The inventive system comprises an intermediate shaft (10) provided at one end with a base (11) intended for fixing both the pinion gear and the base so that they rotate together. A housing (20) has bearing devices (21, 22) for the intermediate shaft (10), a first flange (24) for assembling same on the gears and a second flange (24) for mounting the motor in such a way that it is substantially secured to the gears through the housing (20). A clutching piece may be secured to the motor operating shaft (9) so that they rotate together. This clutching piece (4) is equipped with a first driving unit (12, 12') and the operating shaft with a second driving unit adapted to and engaged in the first one for transferring the torque from the first clutching piece (40) to the intermediate shaft (10). The first driving device (41, 41') is mounted, relative to the second driving device (12, 12'), perpendicular to at least the rotation axis (x) of the intermediate shaft (10) and movable within an angle (.alpha.) relative to the rotation axis (x). Such an intermediate shaft arrangement allows for a plurality of different motors to be simply united to a multitude of different driven systems including gears.
Patent CA-2268474-A1 (CA)
Title: Ester-terminated polyamide gels
Inventor: WILLIAMS VIRGIL A G
IPC: A61K8/00
Filed: 1997-10-18
Abstract: An ester-terminated dimer acid-based polyamide may be blended with a solvent to form a gel. The solvent may be flammable, and a wick may be added to the resulting gel so as to form a candle. Depending on the composition, the candle may be formed into a free standing pillar, or may be better suited to being placed in a container. The solvent may be mineral oil. A solid coating may be placed around the candle, for advantages including to enhance the clarity and/or mechanical stability of the gelled body, and to eliminate the tendency of a gel to have an oily feel and to accept noticeable fingerprints.  The ester-terminated dimer acid-based polyamide may also be combined with an active ingredient, such as a fragrance, colorant, insect-repellant, insecticide, bioactive ingredient or the like, to afford a delivery vehicle for the active ingredient.
Patent CA-2269571-A1 (CA)
Title: Plastic ridge vent
Inventor: VILLELA EDWARD C
IPC: E04D13/17
Filed: 1999-04-21
Abstract: A roof ridge ventilator made of a flexible unitary plastic panel adjustable to the configuration of various roof pitches having: Z-shaped and Y-shaped supports spaced from and alternating each other supporting the panel over the roof; ventilation means of rows of vent slots and slats running longitudinally on the two sides of the panel in which the slots and slats have trapezoidal configurations; vertical exterior baffles integral with the vent slats and running parallel thereto; and baffle extenders integral with the exterior baffles and at an angle of from about 130° to about 160° from the plane of the vertical exterior baffles.
Patent CA-2271621-A1 (CA)
Title: Graduated bone graft harvester
Inventor: DOWDLE JOHN
IPC: A61B10/02
Filed: 1997-04-15
Abstract: This invention is a disposable, bone graft harvester (10) having a clear, graduated plastic tube (12) tipped with a bone cutting head (14) at one end, and a handle (16) or other torque supplying connection at the other end.
Patent CA-2282503-A1 (CA)
Inventor: VENIGALLA SRIDHAR
IPC: H01G4/30
Filed: 1998-02-12
Abstract: Barium titanate-based particles having a coating comprising an oxide, hydrous oxide, hydroxide or organic acid salt of a metal other than barium or titanium, wherein at least 90 percent of said particles have a particle size less than 0.9 micrometer when said particles are dispersed by high shear mixing, useful in the fabrication of thin, fine-grained dielectric layers for multilayer ceramic capacitors with high breakdown voltage.
Patent CA-2284474-A1 (CA)
Title: Combined cycle electric power plant
Inventor: HIRAMOTO KOJI
IPC: F01K23/10
Filed: 1998-01-23
Abstract: A combined-cycle power plant providing a means to stop steam entrance to a steam-cooling system that cools by steam the high temperature cooled parts of a gas turbine immediately after it is stopped, a means for discharging residual steam to the atmosphere, and a means for supplying dry air, and wherein the element parts of the steam-cooling system necessary for purging the residual steam by the means that closes the steam entrance of the steam-cooling system are partitioned, the passage by which the residual steam is purged is ensured by the means that discharges the residual gas to the atmosphere, and the purging of the object residual steam is completed by supplying dry air to the element parts of the partitioned steam-cooling system.
Patent CA-2284513-A1 (CA)
Title: Device for preparing coffee powder
Inventor: PUDDU RAFFAELE
IPC: A47J42/18
Filed: 1997-03-13
Abstract: The invention relates to a coffee grinder, for use preferably in the hotel industry, which is positioned at an oblique angle (.alpha.) to the vertical (L) and makes it possible for several coffee grinders for different types of coffee (28, 28') to be used in a minimal space. Feeding the coffee beans into the grinding mill (3) asymmetrically prevents said beans from getting jammed. Feeding in the beans in this manner is advantageous in terms of both kinetics and energy consumption, as it allows for the use of smaller electric motors without impairing grinding. The coffee grinder (1) is also well suited to adjusting the quantity of coffee powder by presetting the grinding time.
Patent CA-2284591-A1 (CA)
Title: The preparation of enantiomerically enriched oxazolones and .alpha.,.alpha.-disubstituted amino acids
Inventor: TROST BARRY M
IPC: C07D263/42
Filed: 1998-04-14
Abstract: Allylic electrophiles are alkylated with oxazolones in the presence of a base and catalytic quantities of a transition metal complex incorporating a chiral phosphine ligand, to yield 4,4-disubstituted-5(4H)-oxazolones. These precursors may be subsequently transformed either synthetically or enzymatically to yield enantiomerically enriched .alpha.,.alpha.-disubstituted amino acids.
Patent CA-2286147-A1 (CA)
Inventor: WALLACE STEPHEN
IPC: A01G9/02
Filed: 1998-04-09
Abstract: Processes for producing gel compositions comprising: esterifying a portion of the surface of a gel composition sufficient to produce a gel composition having a rod density of less than or equal to 0.27 g/cc, and/or a tap density of less than or equal to 0.2 g/cc through contact with at least one esterification agent and at least one catalyst. The processes may be utilized to produce low density gel compositions without the need for a supercritical drying step or thermal treatment.
Patent CA-2286479-A1 (CA)
Inventor: KREIBERG JETTE DINA
IPC: A23L21/12
Filed: 1998-04-24
Abstract: Composition utilisable comme produit alimentaire ou pour la préparation d'un produit alimentaire. Cette composition comprend une pectine méthyle estérase (PME); un premier substrat de PME, et un second substrat de PME. Aucun de ces deux substrats n'est dérivé in situ de l'autre.
Patent CA-2293079-A1 (CA)
Title: A repeatable data error correction system
Inventor: TODOROKI TOSHIYA
IPC: H04N19/60
Filed: 1999-12-23
Abstract: A data error correction system is provided which is capable of executing repeated error correction processing, and which improves the quality of communication lines by allowing repeated corrections of errors generated in the transmission line.      The data error correction system comprises a Viterbi decoder 13 for decoding a designated encoded data from a buffer 12 and a block decoder for executing decoding of the data corresponding to a length of a block code after being decoded from the Viterbi decoder 13, when error correction is possible.      When error correction is not possible, the data error correction system controls execution of re-decoding by the Viterbi decoder for executing error correction of the data corresponding to a length of a block code whose correction has not been possible yet at this stage.
Patent CA-2293122-A1 (CA)
Inventor: FORSYTHE CARL
IPC: B60P3/10
Filed: 1999-12-24
Abstract: An apparatus which is transformable from a boat lift to a trailer.      The apparatus is movable on skids in a boat lift mode and on wheels in a trailer mode. A pair of posts on a main frame supports a pantographic linkwork to which is affixed a watercraft lifting cradle. A winch is connected to the main frame and to the linkwork for raising and lowering the cradle. A leveling mechanism is used for adjusting the cradle on a level when the apparatus is installed on a sloping shore. An upper deck framework is provided above the front end of the main frame. The cradle is usable for raising and moving a first recreational vehicle over the upper deck framework and for raising a second recreational vehicle above the rear end of the main frame. A third recreational vehicle is transportable on the main frame under the first and second recreational vehicles.
Patent CA-2294664-A1 (CA)
Title: Inhibitory agent for protein denaturation, kneaded meat with suppressed freezing-denaturation, process thereof, and process of fish and meat paste products
Inventor: KOWATA TERUO
IPC: A23L17/00
Filed: 2000-01-10
Abstract: Disclosed are an inhibitory agent for protein denaturation, kneaded meat with suppressed freezing-denaturation and process thereof, method for freezer storage for fish and meat paste products, and process for producing fish and meat paste products, especially, kamabokos, and fish sausages. The inhibitory agent comprises (i) a member selected from sorbitol, trehalose, mixture thereof, and another saccharide(s) containing sorbitol and/or trehalose; and (ii) a pH-controlling agent which adjusts a kneaded meat to an alkaline pH. The agent effectively inhibits the protein denaturation of kneaded meat, and fish- and meat-paste products without using phosphate.
Patent CA-2295855-A1 (CA)
Title: Method and apparatus for producing a high-velocity particle stream
Inventor: PAO Y H MICHAEL
IPC: B24C1/04
Filed: 1998-07-09
Abstract: A method and apparatus for producing a high-velocity particle stream at low cost through multi-staged acceleration using different media in each stage, the particles are accelerated to a subsonic velocity (with respect to the velocity of sound in air) using one or more jets of gas at low cost, then further accelerated to a higher velocity using jets of water. Additionally, to enhance particle acceleration, a vortex motion is created, and the particles introduced into the fluid having vortex motion, thereby enhancing the delivery of particles to the target.
Patent CA-2296540-A1 (CA)
Title: Nutritional composition for subjects under stress
Inventor: CAVAZZA CLAUDIO
IPC: A23L1/305
Filed: 1998-07-10
Abstract: A nutritional composition (medical food) for subjects in a debilitated state as a result of stress is disclosed, which comprises a combination of: (a) L-carnitine or an alkanoyl L-carnitine or one of their pharmacologically acceptable salts; (b) a mixture of natural plant extracts (e.g. yohimbine and guarana); (c) lecithin of soya; and (d) malic acid.
Patent CA-2296558-A1 (CA)
Inventor: CLARK ABBOT F
IPC: A61K31/56
Filed: 1998-06-18
Abstract: Methods for treating ocular neovascularization using photodynamic therapy in combination with an angiostatic steroid are disclosed.
Patent CA-2297041-A1 (CA)
Inventor: OWEN NEIL
IPC: H04R7/06
Filed: 1998-08-24
Abstract: An assembly comprising a resonant panel acoustic radiator, a body from which the acoustic radiator is suspended, at least one vibration exciter on the radiator to launch bending waves into the radiator to cause it to resonate to produce an acoustic output, and means on the body suspending the radiator for free movement relative thereto.
Patent CA-2299440-A1 (CA)
Title: Textured, dimensionally stable microporous film and method of making same
Inventor: DIPOTO JAMES
IPC: B29C55/00
Filed: 1998-11-04
Abstract: The present invention relates to a soft textured dimensionally stable microporous film comprising about 45 to about 60 %, by wt., filler, and a balance between a blend of linear low density polyethylene and high density polyethylene or other heat resistant polymer. The textured dimensionally stable microporous film is formed by extruding the formulation as a film, and orienting the film by passing through at least one set of intermesh gear rolls. The oriented film is annealed, reheated and, optionally, embossed to form the soft textured microporous film which is dimensionally stable at elevated temperatures.