baber/WOPTO huggingface dataset:
Patent CA-2225056-A1 (CA)
Title: Screw
Inventor: CHENG CHAO-TAI
IPC: F16B25/10
Filed: 1997-12-17
Abstract: The shank portion of a screw has a surface formed with a screw thread throughout the length thereof and a lower section formed with a flute at the surface thereof. The flute extends from a tip of the shank portion and has a longitudinal length which is inclined with respect to a longitudinal axis of the shank portion. The flute is defined by a planar side wall, which is inclined relative to the longitudinal axis, and a curved bottom. The planar side wall has a surface with screw thread portions that are disposed in a staggered arrangement in a direction receding from a direction of screw advancing rotation. The flute has a depth which decreases gradually from the tip of the shank portion, and which has a maximum value equal to radius of the shank portion. The longitudinal length of the flute forms an angle ranging from 12° to 32.5° with the longitudinal axis. The screw further has a head portion with an annular skirt adjacent to the shank portion. The annular skirt has one side which is formed with an annular recess around the shank portion and a plurality of radial teeth in the annular recess.
Patent CA-2225360-A1 (CA)
Inventor: HAUCK PETER F
IPC: F23R3/28
Filed: 1997-12-19
Abstract: A centerbody  for  a  tangential  entry  fuel nozzle  comprising  a longitudinal  axis,  a centerbody base,  said centerbody base  having  at  least one  air supply port extending therethrough.  A radially outer surface includes a frustum portion defining the outer surface of a frustum that is coaxial with the longitudinal axis and flares toward the frustum base thereof, and a cylindrical portion which is integral with the frustum  portion  and  preferably defines  the  outer surface  of  a  cylinder,  said  frustum  portion  being located  between  said  cylindrical  portion  and  said centerline.  An  internal passageway  coaxial  with  the longitudinal  axis  and  including  a  first  cylindrical passage,  a second cylindrical passage,  and a tapered passage, each passage having a first end and a second end, said second cylindrical passage having a diameter greater  than  said  first  cylindrical  passage,  said second  cylindrical  passage  communicating  with  said first cylindrical passage through said tapered passage, said first end of said tapered passage integral with said second end of said first cylindrical passage, said second end of said tapered passage integral with said first  end of  said  second  cylindrical  passage,  said first end of said tapered passage having a diameter equal to the diameter of the first cylindrical passage, and said second end of said tapered passage having diameter equal to the diameter of the second cylindrical passage. Each of said passages is coaxial with the longitudinal  axis,  said  first  cylindrical  passage including a discharge orifice that is circular coaxial with said axis and located at the first end of said first  cylindrical  passage.  An  internal  chamber  is located between said centerbody base and said second end of said second cylindrical passage, said air supply ports  communicating  with  said  second  cylindrical passage through said chamber  A swirler coaxial with the  axis  is  located within  the  chamber  immediately adjacent  the  second  end  of the  second  cylindrical passage,  and a fuel lance coaxial with said axis and extending through said centerbody base,  said internal chamber,  and  said swirler  terminating  within  said second cylindrical passage.
Patent CA-2226026-A1 (CA)
Inventor: THIENPONT EMMANUEL
IPC: A01N25/00
Filed: 1997-12-31
Abstract: There is provided a method for the control of resistant populations of Lepidoptera: Olethreutidae such as Cydia pomonella (L.), Laspeyresia pomonella (L.) Grapholitha molesta (Busck), and the like and the protection of fruit crops therefrom which comprises contacting said Lepidoptera with a toxic amount of flufenoxuron.
Patent CA-2226990-A1 (CA)
Title: Textile fabric comprising bundles of machined metal filaments
Inventor: DEWAEGHENEIRE GABRIEL
IPC: D04B1/14
Filed: 1996-07-11
Abstract: The invention relates to a textile fabric comprising bundles made up of metal filaments obtained by a machining process and having an equivalent filament diameter of between 15 and 150 µm and in which the filaments are disposed in a nearly parallel arrangement in the bundles. It also relates to a method for manufacturing the fabric, in particular by means of flat knitting, and to its utilization as a membrane for gas burners.
Patent CA-2227196-A1 (CA)
Inventor: SCHIPPER DIRK
IPC: C12P17/18
Filed: 1996-07-18
Abstract: The present invention describes a process wherein toxic and/or off-flavoured compounds are modified upon hydrolysis with a single enzyme. The modification results in a reduction of the toxicity and/or off-flavour of said compounds.  The toxic and/or off-flavoured compounds preferably originate from Solanaceae and are glycosides. The enzyme cleaves said compounds at the covalent bond between the aglycone and the glycosidic part. More preferably the enzyme has an alpha-chaconinase activity, degrades alpha-chaconine to liberate the solanidine aglycone and a trisaccharide and originates from Aspergillus niger.  The enzymatic hydrolysis of the invention can be applied in, for instance, the recovery of protein from potato fruitwater after separation of the starch granules.
Patent CA-2230343-A1 (CA)
Title: A supporting device for data-storage optical discs
Inventor: PEREGO LUCIANO
IPC: B29B17/02
Filed: 1998-02-24
Abstract: A supporting device for data-storage optical discs which includes a rest plate with which at least one supporting element is arranged to receive an optical disc.  The supporting device further includes a vacuum assembly and vacuum connecting through-holes for providing vacuum communication between the supporting element and the vacuum assembly.  The supporting element includes a base and a side wall arranged to support the optical disc and defining, with the optical disc itself, a vacuum chamber.  The vacuum chamber ensures locking retention of the optical disc on the supporting element, while enabling movement of the rest plate, and further achieves cooling of the disc by an air stream passing through the chamber and spreading over the optical disc surface.
Patent CA-2232325-A1 (CA)
Title: Tumor rejection antigens presented by hla-b44 molecules, and uses thereof
Inventor: HERMAN JEAN
IPC: C12N5/09
Filed: 1996-09-19
Abstract: Tumor rejection antigens presented by HLA-B44 molecules are described. These peptides are useful in diagnostic and therapeutic methodologies. The tumor rejection antigens are not derived from tyrosinase, which has previously been identified as a tumor rejection antigen precursor processed to an antigen presented by HLA-B44.
Patent CA-2233659-A1 (CA)
Title: Catalyst for the manufacture of polyethylene with a narrow molecular weight distribution
Inventor: KISSIN YURY VIKTOROVICH
IPC: C08F4/64
Filed: 1996-07-25
Abstract: An ethylene-alpha-olefin copolymerization catalyst is prepared by impregnating a porous support, such as silica, with a contact mixture of an organomagnesium compound such as dialkyl magnesium and a silane compound which is free of hydroxyl groups, such as tetraethyl orthosilicate. A transition metal component such as titanium tetrachloride is then incorporated into the support in a specific ratio to the magnesium and silane components. Activation of this catalyst precursor with a trialkylaluminum compound results in a catalyst system which is effective for the production of ethylene copolymers.
Patent CA-2234098-A1 (CA)
Inventor: MARMONIER JEAN
IPC: H02B13/065
Filed: 1998-04-29
Abstract: The method involves using a temperature compensated pressure sensor mounted on the external wall of metalclad gas insulated high voltage electrical equipment. The sensor is used to record gas densities (60) every six minutes during the four hours from midnight to 0400 hrs. For each of the four hours an average gas density (62) is produced and if the difference between two successive values (61) exceeds a preset threshold an alarm (A) is activated. An average of the four average gas density values for the four hours in the night period of each day is also produced to represent a daily average gas density (63) used to check annual changes (64).
Patent CA-2234627-A1 (CA)
Title: Method and assembly for overfill detection in liquid level sensing in a vessel by the pulse transit time technique
Inventor: GETMAN IGOR
IPC: G01F23/296
Filed: 1998-04-07
Abstract: Sensing the level of a liquid in a vessel by the pulse transit  time  technique  is  done  by  means  of  an ultrasonic  transducer  mounted  above  the highest-permissible level in the vessel which emits ultrasonic transmission pulses to the surface of the liquid and receives the ultrasonic echo pulses reflected from the liquid surface. The level in the vessel is established from the transit  time of the ultrasonic  pulses.  To detect an overfill when the ultrasonic transducer is immersed in the liquid the decaying output signal of the ultrasonic transducer generated by the ringing of the ultrasonic transducer following the end of the each ultrasonic  transmission  pulse  is  analyzed.  In this arrangement  the  fact  is  exploited  that  due  to  the better coupling of the ultrasonic  transducer to the liquid than to air the ringing duration is shorter when the ultrasonic transducer is covered by the liquid.
Patent CA-2239603-A1 (CA)
Title: Quinolines and quinazolines useful in therapy
Inventor: MANTELL SIMON JOHN
IPC: A61P13/08
Filed: 1998-06-03
Abstract: Quinolines and quinazolines useful in therapy Compounds of formula I, (see fig. I) wherein R1 represents C1-4 alkoxy optionally substituted by one or more fluorine atoms; R2 and R3 independently represent H or C1-6 alkoxy (which is optionally substituted); R4 represents a 4-, 5-, 6- or 7-membered heterocyclic ring, the ring being optionally fused to a benzene ring or a 5- or 6-membered heterocyclic, the ring system as a whole being optionally substituted; X represents CH or N; and L is absent, or represents a cyclic group of formula Ia, (see fig. II) ;   or represents a chain of formula Ib, (see fig. III)  ;   and pharmaceutically acceptable salts thereof; are useful in therapy, in particular in the treatment of benign prostatic hyperplasia.
Patent CA-2239626-A1 (CA)
Inventor: NAKATA JOSUKE
IPC: H01L25/04
Filed: 1996-10-09
Abstract: The present invention is a semiconductor device which has one or a plurality of spherical semiconductor elements as its main component. The spherical semiconductor element is a spherical semiconductor crystal with a photovoltaic part and a pair of electrodes. The present invention is also a semiconductor device of a semiconductor photocatalyst, photodiode or solar battery. The present invention is also a semiconductor device which has one or a plurality of spherical semiconductor elements as its main component. This spherical semiconductor element is a spherical semiconductor crystal with a pn junction and a pair of electrodes. Semiconductor devices of light-emitting diodes, various diodes, or display panels are disclosed. Referring to semiconductor photocatalyst 1 of the figure, a p-type diffusion layer 6 and a pn junction 7 is formed on an n-type silicon semiconductor spherical crystal. There is formed a micro photocell 17 which includes: photovoltaic part 16; a pair of electrodes 14, 15 which are opposite each other and which sandwiches the center of spherical crystal 2; a SiO2 coating 9; a TiO2 coating 10 which has photocatalytic function.
Patent CA-2244097-A1 (CA)
Title: Pharmaceutical composition comprising bupropion hydrochloride and fumaric acid
Inventor: SHERMAN BERNARD CHARLES
IPC: A61K9/20
Filed: 1998-08-21
Abstract: A pharmaceutical composition in solid dosage form comprising bupropion hydrochloride as active drug and fumaric acid as stabilizer.
Patent CA-2244820-A1 (CA)
Title: An activated carbon treated by carbon dioxide for the stabilization of treated water ph and the control of aluminum in the treated water
Inventor: PINKER BRETT LESLIE
IPC: C01B31/08
Filed: 1997-02-06
Abstract: Treatment of a wet activated carbon with carbon dioxide or with carbon dioxide followed by air results in a carbon having a reduced contact pH. The activated carbon is characterized by a modified contact pH  less than about 9.0 and typically between about 7.3 and 9Ø Use of this carbon in a water treatment system eliminates the excessive effluent water pH rise which commonly occurs with activated carbon. Also, use of this caption in a water treatment system reduces the aluminum concentration of the water when compared to an untreated carbon.
Patent CA-2245228-A1 (CA)
Title: Fuel cell co sensor
Inventor: BORUP RODNEY LYNN
IPC: H01M8/04
Filed: 1998-08-06
Abstract: The CO concentration in the H2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.
Patent CA-2245884-A1 (CA)
Title: Method for high resolution measurement of a position
Inventor: KRAHE FRANK
IPC: G01B7/02
Filed: 1996-12-19
Abstract: A Magnetostrictive linear position sensor (14) produces a signal which is a time period. It is sometimes required to measure this time period and provide an output in another form which accurately represents the time period. The final output may be a voltage, current, frequency, digital, or other signal format. A time period is commonly measured using a clock and a counter. The resolution is limited by the frequency of the clock. An upper limit for the clock frequency is usually set based on power consumption, or other circuit constraint. The present invention discloses a method and apparatus (10) for improving the resolution of a time interval while using low power and for providing a response after one time period without averaging.
Patent CA-2245919-A1 (CA)
Title: Method and immersion sensor to measure electrochemical activity
Inventor: NEYENS GUIDO
IPC: C21C5/46
Filed: 1997-12-11
Abstract: The invention relates to a method and an immersion sensor to measure electrochemical activity of a layer lying on a molten mass using an electrochemical sensor comprising a measuring cell and a counter electrode. In order to reliably reproduce exact measurements in the layer, the measuring cell and the counter electrode are initially immersed in the molten mass, wherein the measuring call and the counter electrode are protected before they come into contact with said layer.  The measuring cell and the counter electrode are then brought into contact with the molten mass and heated. Subsequently, the measuring cell is pulled up into the layer to carry out measurement, while the counter electrode remains in the molten mass during measurement. To this end, the measuring cell and the counter electrode are provided with a protective cap. The measuring cell is placed above the counter electrode when the sensor is immersed.
Patent CA-2247807-A1 (CA)
Title: Bacillus thuringiensis genes encoding nematode-active toxins
Inventor: PAYNE JEWEL
IPC: A01N63/50
Filed: 1997-03-21
Abstract: B. thuringiensis genes encoding toxins active against nematode pests have been cloned from the strains PS80JJ1, PS158D5, PS167P, PS169E, PS177F1, PS177G, PS204G4 and PS204G6. The toxins are active especially against Panagrellus redivivus as examplified in the application. The DNAs encoding the toxins can be used to transform various hosts, such as plants, to express the toxins.
Patent CA-2248702-A1 (CA)
Title: Support de reprographie a charge electrostatique
Inventor: EVANS DWIGHT L
IPC: G03G7/00
Filed: 1997-03-05
Abstract: Support de reprographie adapté à l'utilisation dans des dispositifs de reproduction d'image tels que machines électrostatiques, machines à jet d'encre, machines à transfert thermique, et appareils similaires. Les supports de reprographie préférés sont constitués d'une feuille polymère transparente sur laquelle une image peut être reproduite dans un dispositif de reproduction d'image, et, attachés à celle-ci, d'un élément opaque situé sous cette feuille transparente et coïncidant avec elle, cet élément opaque adhérant à la feuille polymère transparente sous l'effet d'une charge électrostatique.
Patent CA-2249747-A1 (CA)
Title: Novel tripeptide compounds and anti-aids drugs
Inventor: TAKAKU HARUO
IPC: C07K5/02
Filed: 1997-12-22
Abstract: Novel tripeptide compounds having excellent HIV protease inhibitory activites and represented by general formula (I), pharmacologically acceptable salts thereof, and anti-AIDS drugs containing the same as the active ingredient. An example of the compounds is (R)-N-(2-methylbenzyl)-3-{(2S, 3S)-3-¢N-(2-chromonecarbonyl)-L-asparaginyl!amino-2-hydroxy-4-phenylbutanoyl}-5, 5dimethyl-1, 3-thiazolidine-4-carboxamide.
Patent CA-2250417-A1 (CA)
Title: Substituted phenyl keto enols as pesticides and herbicides
Inventor: FISCHER REINER
IPC: C07D311/96
Filed: 1997-03-21
Abstract: The present invention concerns novel compounds of formula (I) in which Het stands for one of the groups (1), (2), (3), (4) or (5), A, B, D, G, V, W, X, Y and Z having the meanings given in the description. The invention further concerns processes and intermediate products for the preparation of these compounds, and their use as pesticides and herbicides.
Patent CA-2250821-A1 (CA)
Inventor: RIJCKAERT ALBERT MARIA ARNOLD
IPC: G11B20/10
Filed: 1998-02-02
Abstract: A recording apparatus for recording a first information signal, comprising packets of information and a trick play signal comprising packets of information comprise a time stamp generator for generating time stamps for the packets. The first digital information signal is meant for a reproduction at a record carrier speed which equals the recording speed and the second digital signal is meant for a reproduction at a speed n1 times the recording speed. The time stamp generator comprises a first counter for generating subsequent cycles of subsequent first count values so as to supply time stamps for said packets of said first digital information signal and a second counter for generating subsequent cycles of subsequent second count values so as to supply time stamps for said packets in said second digital information signal, said first counter supplying said first count values at a first rate, said second counter supplying said second count values at a second rate, which equals said first rate divided by n1.
Patent CA-2251174-A1 (CA)
Inventor: BUCK ROBERT CRAIG
IPC: D06P5/08
Filed: 1997-04-04
Abstract: Adding to a laundry detergent a resole condensation polymer prepared by reacting bis(hydroxyphenyl)sulfone with formaldehyde in the presence of a base thereby preventing or suppressing dye-transfer and dye-bleeding during laundering of nylon, rayon, cotton, acetate, or whool fabrics is disclosed.
Patent CA-2253488-A1 (CA)
Title: A method and device to convert an analog current to a digital signal
Inventor: TAN NIANXIONG
IPC: H03M1/44
Filed: 1997-04-29
Abstract: To convert an analog current to a digital signal using a high-speed pipelined analog-to-digital (A/D) converter, the A/D converter may comprise a current sample- and hold (S/H) circuit at the input and several identical pipelined stages, where each stage contains a current S/H circuit, a current interstage low-resolution A/D converter and current references. To improve the speed of pipelined current-mode A/D converters the capacitive load seen by the output of every stage will be reduced. By adjusting the reference currents the power consumption will also be reduced. It is possible to achieve about 100 Msamples/s conversion rate and to reduce the power consumption by several times compared with existing designs. To increase the operation speed and to provide means to reduce the power consumption the pipelined current-mode A/D  converter may comprise an S/H circuit (7) as the input and N pipelined stages (8), each of which contains an internal low-resolution A/D converter (9), a D/A converter (10), an S/H circuit (11), a reference current source (12) and an adder/subtractor (13). The most distinguishing features of the invented architecture are: 1) the inputs to the internal A/D converter and the interstage S/H circuit are timeinterleaved; and 2) the reference current to the D/A converter in every stage can be different.
Patent CA-2253573-A1 (CA)
Title: Fucoidan-containing foods or beverages
Inventor: KATO IKUNOSHIN
IPC: A23L7/109
Filed: 1997-05-15
Abstract: Foods or drinks prepared by incorporating, adding and/or diluting fucoidan originating in fucoidan-containing substances; fucoidan-containing foods or drinks which are decreased in or freed from algins originating in fucoidan-containing substances; and apoptosis-inducing foods or drinks containing an effective amount of fucoidan having an apoptosis-inducing effect.
Patent CA-2256379-A1 (CA)
Title: Substance mixtures comprising vinyl-containing compounds and stabilizers
Inventor: UHR HERMANN
IPC: C07B63/04
Filed: 1997-11-28
Abstract: The invention concerns substance mixtures containing: (A) compounds containing vinyl groups; (B) an active amount of a mixture which inhibits premature polymerization of the compounds containing vinyl groups and contains: (i) at least one N-oxyl compound of a secondary amine which does not carry any hydrogen atoms on the .alpha.-carbon atoms; and (ii) at least one iron compound; (C) optionally nitro compounds; and (D) optionally co-stabilizers. The invention further concerns a process for inhibiting the premature polymerization of compounds (A) containing vinyl groups, and the use of mixture (B), optionally mixed with nitro compounds (C) and/or co-stabilizers (D), for inhibiting the premature polymerization of radically polymerizable compounds and for stabilizing organic materials against the harmful effect of radicals.
Patent CA-2258164-A1 (CA)
Title: Drill tube for forming drill strings
Inventor: LILJEBRAND PER-OLOF
IPC: E21B17/00
Filed: 1997-06-18
Abstract: In a first aspect the invention relates to a drill-string-forming drill tube which includes a channel (15) intended for passing flushing liquid, inside of which there is a restriction which forms a seat (14) for a valve body (16) serving as a check valve. Said drill tube comprises, in addition to a partly spherical skittle member (17) for engagement in the seat (14), two or more tangentially separated blocking elements (21). The purpose of said elements is, when flushing liquid is fed from the valve seat towards a second restriction distanced therefrom, to stop the valve body against said second restriction without sealing thereagainst. Therefore, one and the same drill tube may be used for upwardly directed as well as downwardly directed drilling. In a second aspect, the invention relates to the valve body as such.