baber/WOPTO huggingface dataset:
Patent CA-2068739-C (CA)
Title: Use of pre-scanned low resolution imagery data for synchronizing application of respective scene balance mapping mechanisms during high resolution rescan of successive images frames on a continuous film strip
Inventor: COSGROVE PATRICK A
IPC: H04N1/60
Filed: 1991-09-05
Granted: 1998-09-15
Abstract: A plurality of color photographic images that have been captured on a continuouscolor photographic film strip are pre-scanned at low resolution and then rescanned at high resolution by an opto-electronic scanning device and processed for storage as a plurality of digitized images in a digital imagery data base. The film strip contains notches to spatially locate pre-scan frame data during rescan. During pre-scan the film strip is translated past an opto-electronic scanner in a first direction to obtain a plurality of first digitally encoded images. During high resolution rescan, the film strip is translated in the reverse direction. The high resolution imagery data is mapped into image storage memory on the basis of the contents of respective first digitally encoded images. During the rescan the mapping process is calibrated on the basis of information contained on the film strip other than the notches, such as detected interframe gaps and a correlation of low resolution and high resolution frame 'fingerprints'.
Patent CA-2072613-C (CA)
Title: Iodothyronine polymers
Inventor: LATHAM KEITH R
IPC: C07K14/575
Filed: 1990-10-31
Granted: 2002-02-05
Abstract: Iodothyronine polymers having a plurality of recurring units of formula (I), in which A is iodo and B, C, and D are inde-pendently H or iodo are described. Polymers in which A and C are iodo and B  and D are independently H or iodo and in which substantially alf of the recurring units are L-stereoisomers, have utility in treating thyroid hormone deficiencies. The polymers are preferably prepared by polymerization of N-carboxyanhydrides of formula (III).
Patent CA-2074672-C (CA)
Title: Multicolor printing press
Inventor: MIYOSHI MASAHIKO
IPC: B41F33/14
Filed: 1992-07-27
Granted: 1998-09-15
Abstract: In a multicolor printing press which has a plurality of printing sections arranged in vertical alignment, the multicolor printing press facilitates adjustment of register position between a plurality of printing sections.   The multicolor printing press thus has a first printing section which includes at least one first plate cylinder, and at least one second printing section which includes at least one second plate cylinder.  The multicolor printing press is also provided with means for rotatably supporting the first plate cylinder in a fixed register position for providing reference position in adjustment of register position in the second printing section, means for rotatably supporting the second plate cylinder, and adjusting means of register position of said second plate cylinder relative to the reference position defined by the first plate cylinder.
Patent CA-2076532-C (CA)
Title: Magnetic metallic security thread with negative inscription
Inventor: KAULE WITTICH
IPC: B42D25/355
Filed: 1991-12-18
Granted: 1998-12-08
Abstract: The invention relates to a security document, in particular a bank note, identity card or the like having a security element which is provided with characters, patterns, etc., visually readable at least in transmitted light and which is electrically conductive and bears additional substances for machine testing, and to a method for producing such a security element. The security element preferably consists of a transparent film strip that bears negative writing readily capable of visual checking and is additionally provided with electrically conductive and magnetic substances.
Patent CA-2079017-C (CA)
Title: Differential amplifier arrangement
Inventor: SEVENHANS JOANNES MATHILDA JOS
IPC: H03F1/32
Filed: 1992-09-24
Granted: 1996-12-17
Abstract: The   operational   transconductance   amplifier includes a differential amplifier with a differential pair connected to a common current source, and a control circuit for obtaining a linear input voltage versus output current characteristic   by   maintaining   the   transconductance independent of the differential and of the common mode input voltages.  The control circuit includes a negative feedback circuit with a comparator or operational amplifier whose inputs are connected to the above connection point and to a reference terminal whose voltage follows that of the differential  inputs,  the output of  the comparator controlling the current source.  The slope of the linear characteristic can also be modified by changing the voltage at the reference terminal via an external input voltage terminal.   An additional  current mirror circuit,  also controlled  by  the  control  circuit,  is  provided  for suppressing  the  common  mode  output  current  in  the differential pair,  this current being generated by the action of the control circuit on the current source.
Patent CA-2081168-C (CA)
Title: Rerouting in a distributed telecommunication system
Inventor: BALES BRUCE MERRILL
IPC: H04M3/00
Filed: 1992-10-22
Granted: 1997-04-08
Abstract: Routing calls using a new protocol message which is a redirect message in a telecommunication system having a number of switching nodes to avoid circular paths among the switching nodes and for rerouting calls in the event of failures or overload conditions. During the establishment of a call from an originating switching node to a destination switching node where the call path has already been setup from the originating switching node through an intermediate switching node, a switching node is responsive to a setup message from the intermediate switching node requesting extension of the call path through the switching node to determine if such an extension would create a circular path. If circular path would be created, the switching node redirects the call (by using the redirect message) back to the intermediate switching node and indicates in that message to which switching node the call path should be extended. In response to the redirect message, the intermediate switching node reroutes the call path. Further, the redirect message entirely removes the call path between the switching node and intermediate switching node.
Patent CA-2082347-C (CA)
Title: Process for producing l-isoleucine
Inventor: KINO KUNIKI
IPC: C12P13/06
Filed: 1992-11-06
Granted: 2002-05-28
Abstract: Disclosed is a process for producing L-isoleucine which comprises culturing in a medium a microorganism belonging to the genus Escherichia and having resistance to an isoleucine analogue and an ability to produce L-isoleucine until L-isoleucine is accumulated in the culture, and recovering L-isoleucine therefrom.
Patent CA-2086706-C (CA)
Title: Unit masonry fence and method for erecting
Inventor: DAWSON JOHN A
IPC: E04H17/14
Filed: 1993-01-05
Granted: 1996-05-14
Abstract: A unit masonry fence having footings, support posts extending upwardly from the footings and fence panels mounted over the support posts and supported by the footings.  Each fence panel is made up of a base supporting beam extending generally the length of the panel and having a receptacle toward the ends thereof for receiving the support posts.  A number of unit masonry courses are laid on the base supporting beam. The unit masonry courses terminate at each end with a pilaster made from pilaster masonry units laid integrally.  The pilaster masonry units have a main body portion broader than the adjacent unit masonry courses and an opening extending through the body portion for receiving the support posts.           A method for installing a unit masonry fence.  The method includes the steps of: pouring concrete footings at predetermined spacings; incorporating at least one upwardly extending support post in each of the footings and placing a unit masonry fence panel as described above on the footings with the support posts extending into the receptacles in the pilasters and base supporting beam.
Patent CA-2090339-C (CA)
Title: Method of washing an upflow filter and filter bed employed in said filter
Inventor: KIM ANNABELLE
IPC: B01D29/62
Filed: 1991-08-23
Granted: 2002-07-02
Abstract: A method of washing an upflow filter (12) between service runs employs a filter bed (26) having a non-buoyant particulate filter layer (56) through which influent to be filtered is directed in an upward direction, and through which liquid employed in the washing operation is directed in an upflow direction. A two-stage washing operation includes the steps of first directing a combination of air and liquid in an upflow direction through the filter layer (56) with the velocity of the liquid being less than the minimum fluid-ization velocity of the filter layer (56), for disrupting only some floc retained in the filter layer during a previous service run, and thereafter directing only liquid in an up-flow direction through the filter layer at a velocity less than the minimum fluidization velocity of the filter layer for removing disrupted floc from the filter layer while leav-ing some floc attached to said particulate media of the filter layer. The process most preferably is carried out with a filter bed (26) including a coarse, particulate media flocculation layer (52) for distributing the flow of influent and promoting flocculation.
Patent CA-2094095-C (CA)
Title: Bar for storage rack system
Inventor: MORGAN WILLIAM B
IPC: A47F5/08
Filed: 1993-04-15
Granted: 1997-10-07
Abstract: ABSTRACT OF THE DISCLOSURE        A bar to be used in a storage rack system is provided for the dual storage of computer tape reels and/or computer tape packs.  The storage rack system has a series of bars arranged in rows and columns.   The storage rack system has flexibility in that the bars are of one uniform design such that computer tape reels and packs can be stored simultaneously in one system.
Patent CA-2094808-C (CA)
Title: Oxysulfonyl urea acat inhibitors
Inventor: PICARD JOSEPH ARMAND
IPC: A61K/
Filed: 1991-11-05
Granted: 2003-10-07
Abstract: Novel compounds of formula (I), wherein R is hydrogen, a straight or branched alkyl group having from 1 to 8 carbon at-oms or benzyl; wherein each of R1 and R2 is hydrogen, an aralkyl group, a straight or branched hydrocarbon group having from 1 to 20 carbon atoms and may be saturated or unsaturated, an alkyl group of from 1 to 6 carbon atoms wherein the terminal carbon is substituted, the group -(CH2)p-Q wherein p is zero to three and Q is a 5- or 6-membered monocyclic or fused bicyclic heterocycle, phenyl or NR1R2 taken together form a monocyclic heterocyclic ring, and R3 is phenyl, substitut-ed phenyl, naphthyl, substituted naphthyl, -(CH2)p-Q wherein p and Q are as defined above, an aralkyl group or a straight or branched hydrocarbon group having from 1 to 20 carbon atoms and being straight or branched.
Patent CA-2094881-C (CA)
Title: Acoustic gel
Inventor: FANNING BRYCE L
IPC: B63G8/39
Filed: 1993-06-22
Granted: 2001-12-11
Abstract: A method for reducing cavitation around underwater acoustic projectors is described. The projector is cleaned with a surfactant and then encapsulated with an aqueous gel containing a polysaccharide polymer, a hydrophilic stabilizer and a biocide.
Patent CA-2096189-C (CA)
Title: 3 part glide on solid bearing drawer slide
Inventor: WOOF MICHAEL S
IPC: A47B88/493
Filed: 1993-05-13
Granted: 1999-08-03
Abstract: The invention lies in a solid bearing drawer slide with an innovative reinforced plastic intermediate channel resulting in smooth, silent operation.  The new low cost slide has the action and durability of a ball bearing and drawer slide while costing a fraction of the price to make.  The plastic intermediate slide is made of mixtures of new innovative durable plastics.  A lubricant supplied between bearing surfaces produces smooth sliding action.
Patent CA-2098146-C (CA)
Title: Nouveau procede de preparation de composes steroides 20-ceto 21alpha-hydroxy et intermediaires
Inventor: BUENDIA JEAN
IPC: C07J9/00
Filed: 1993-06-10
Granted: 2003-12-30
Abstract: L'invention concerne un nouveau procédé de préparation des composés (I): (voir formule I) où R1 est alkyle (1-3c), R2 est alkyle (1-12c) et R3 est alkyle (1-4c), au dépàrt du dérivé 17.beta.-CN 17.alpha.-OR4 correspondant, où R4 est un reste d'éther facilement clivable, ainsi que des intermédiaires. Les composés (I) sont connus.
Patent CA-2099125-C (CA)
Title: Tapetum-specific promoters from brassicaceae spp
Inventor: SCOTT RODERICK J
IPC: C12N15/55
Filed: 1991-12-24
Granted: 2009-09-22
Abstract: Tapetum-specific promoters, designated A3 and A9 and capable of driving expression of 12.9 kDa and 11.6 kDa proteins in Arabidopsis thaliana and related proteins within the family Brassicaceae, have been discovered, isolated and cloned. The promoters can be used to drive male sterility DNA such as that coding for a nuclease, protease or glucanase. Alternatively or in addition, male sterility can be achieved by disrupting the proper expression of the A3 and/or A9 genes, for example by transcribing RNA which is antisense to the RNA normally transcribed from the A3 and A9 genes, or by expressing DNA coding for a ribozyme specific for at least one of the A3 and A9 genes.
Patent CA-2102127-C (CA)
Inventor: SCHEER GERHARD
IPC: B23B51/04
Filed: 1992-05-15
Granted: 2004-04-27
Abstract: A drilling tool has a drilling crown removably arranged on a shank and provided with two complementary regions, mutually separated by chip channels and having partially circumferential surfaces. At least two cutting plates are secured to the regions of the drilling crown and spaced apart by 180°. A centering drill is arranged in the drilling crown in the axial direction and projects over the front face of the latter. The cutting edge of the outermost plate radially projects over the circumferential surfaces of the drilling crown, whereas the working area of the innermost plate radially approaches or overlaps the working area of the centering drill. To allow holes to be cut without damage, a guiding element that radially projects less than the cutting edge of the outermost plate is arranged on both circumferential surfaces, axially spaced from the front face of the cutter and spaced apart from each other.
Patent CA-2110455-C (CA)
Title: Quaternized polyvinylamine water clarification agents
Inventor: CHEN JEN-CHI
IPC: C02F1/54
Filed: 1993-12-01
Granted: 2005-05-24
Abstract: The use of quaternized polyvinylamines for use in water clarification is disclosed.
Patent CA-2111357-C (CA)
Inventor: RAO M VIKRAM
IPC: G01V3/30
Filed: 1992-06-10
Granted: 2001-10-16
Abstract: An apparatus and method for determining formation resistivity at a plurality of radial distances from an earth borehole uses a single receiver pair (R1, R2) and a plurality of electromagnetic energy transmitters (16, 18, 20) sequentially spaced along the apparatus from the receiver pair, such transmitters being sequentially pulsed at approximately 1-2 MHz each to provide time separation between the pulsing of the plurality of transmitters. The closest spaced transmitter (16) is spaced a predetermined distance from the closer receiver (R1) to make the depth of investigation of the closest trans-mitter (16) essentially independent of formation resistivity. Alterna-tively, a single transmitter is spaced a predetermined distance from the closer receiver to make the depth of investigation of such trans-mitter essentially independent of formation resistivity.
Patent CA-2112518-C (CA)
Inventor: STERN JACQUES
IPC: G06F21/00
Filed: 1993-12-22
Granted: 2003-12-02
Abstract: 29 ABREGE DESCRIPTIF La présente invention concerne un procédé d'authentification d'au moins un dispositif d'identification par un dispositif de vérification. Dans le cadre du procédé, l'authentification est réalisée par un protocole à apport nul de connaisssance basé sur le problème du décodage par syndrome. Le procédé comprend l'établissement d'un vecteur secret s d'un poids de Hamming d, d'une matrice connue M de dimensions n x k et d'un vecteur public K tei que K = Ms, la production d'un vecteur aléatoire y et une permutation aléatoire p au niveau du dispositif d'identification, un engagement sur des paramètres dépendant de y et/ou p et/ou s basé sur l'usage de la fonction de hachage cryptographique H et de la matrice M, une échange d'informations concernant y, p, s permettant de répondre aux questions posées par le dispositif de vérification sans révéler directement ou indirectement s à celui-ci et une vérification à l'aide de K et/ou des informations précedemment transmises de la validité des engagements hachés. L'invention s'applique notamment à la télévision à péage. Figure 1
Patent CA-2114074-C (CA)
IPC: B41M5/52
Filed: 1994-01-24
Granted: 1999-03-09
Abstract: Disclosed herein is recording paper suitable for use in ink-jet recording systems making use of an ink containing a nitrogen compound, comprising neutral or alkaline paper as a base, wherein the recording paper contains a penetration-retarding agent for retarding the penetration of the ink in a recording surface thereof, and is filled with a substance, which adsorbs ammonia or ammonium ions caused by the nitrogen compound in the ink thereon, in the interior thereof.
Patent CA-2118820-C (CA)
Title: Process for the preparation of an epoxide
Inventor: JACKMAN DENNIS E
IPC: C07D303/08
Filed: 1994-03-11
Granted: 2005-02-22
Abstract: An epoxide is produced by reacting a sulfonium salt with a ketone in the presence of a low molecular weight alcohol or ether and an alkali metal hydroxide at a temperature of from about 60 to about 90°C. The alkali metal hydroxide is in the solid form. The reaction is generally carried out in the presence of an organic solvent such as toluene. The preferred low molecular weight ether is diethylene glycol. Water is not added to the reaction mixture.
Patent CA-2122521-C (CA)
Inventor: HART RUSSELL F
IPC: G01N27/26
Filed: 1994-04-29
Granted: 1998-10-27
Abstract: Apparatus for monitoring gaseous oxygen concentration that includes an oxygen sensor for providing an electrical sensor signal that varies as a function of oxygen concentration at the sensor. Processor circuitry compares oxygen concentration indicated by the sensor signal to at least one threshold level, and indicates when such oxygen concentration at the sensor departs from such threshold concentration level.  The apparatus is calibrated by exposing the sensor to a calibration gas having an oxygen concentration equal to the desired  threshold  concentration  level,  and storing  in the processor  circuitry  electrical  indicia  indicative  of  operating characteristics of the sensor at such threshold oxygen concentration level.  When the apparatus is thereafter employed for monitoring a gas   of   undetermined   oxygen   concentration,   the   operating characteristics of the sensor reflected by the sensor output signal are compared to the prestored indicia for determining when oxygen concentration at the sensor crosses the threshold concentration level.
Patent CA-2125540-C (CA)
Title: Stainless steel wire product
Inventor: YAMAOKA YUKIO
IPC: C21D6/00
Filed: 1994-06-09
Granted: 1999-03-23
Abstract: This invention discloses a new stainless steel wire product made of a two-phase stainless steel having two-phases of austenite and ferrite. The product is particularly suitable for use as tension members, hanging members and cables since it demonstrates high tensile strength, low elongation factors, improved fatigue strength, an improved corrosion resistance when used without any corrosion preventive treatment. The product essentially contains 0.01-0.10 wt% of C, 0.1-1.0 wt% of Si, 0.30-1.50% of Mn, 0.010-0.40 wt% of P, 0.001-0.030 wt% of S, 18.0-30.0 wt% of Cr, 3.0-8.0 wt% of Ni, 0.1-3.0 wt% of Mo, and 0.10-0.45 wt% of N, wherein the volume ratio of ferrite to the sum of the austenite and ferrite is between 20.0 and 80.0%.
Patent CA-2125741-C (CA)
Inventor: CADMAN GARY R
IPC: G01F25/00
Filed: 1994-06-13
Granted: 1998-11-24
Abstract: The present invention resides in a probe excitation and testing ("PET") system that can apply either a normal excitation or a "small" bias test excitation to overfill protection probes mounted within storage and transport tanks used to store, e.g., flammable fluids.  The PET system applies the normal excitation for normal operation of the probes to provide overfill protection, and applies a "small" bias test excitation to the probes for performing diagnostic tests, including anti-cheating.  The PET system can also perform a probe signature validation test under normal excitation to ascertain whether the probes are responding thereto in accordance with specifications relating to characteristic parameters of the probes' output waveforms, e.g., duty cycle, magnitude, and period.
Patent CA-2128575-C (CA)
Title: Segmented image holographic disks
Inventor: WREEDE JOHN E
IPC: G03H1/02
Filed: 1994-07-21
Granted: 1998-11-10
Abstract: A hologram structure including a plurality of holograms having substantially identical reconstruction characteristics disposed on a substrate for rotation about a rotation axis and containing segments of a composite image. The holograms are angularly offset relative to each other about a rotation axis such that the composite image is visible over at  least one narrow solid angular region pursuant to rotation of the holograms about the rotation axis and illumination of the holograms with a reconstruction beam.
Patent CA-2129216-C (CA)
Title: A non-directional pneumatic tire for use on agricultural tractors and other like vehicles
Inventor: BONKO MARK LEONARD
IPC: B60C11/117
Filed: 1994-07-29
Granted: 2003-10-14
Abstract: A pneumatic agricultural tire having a unique non-directional tread is disclosed. The tread has a plurality of lugs. The lugs are arranged in sets of at least three preferably four lugs having substantially parallel lug centerlines, the set being repeated circumferentially around the tread. The set extends along a line through the lug centers in a substantially straight line from tread edge to tread edge. The centerline of each lug are substantially parallel and form an acute angle .theta. with the equatorial plane of about 45°. The lugs respectively having a surface with a length and a width, the length being three times the width.
Patent CA-2129494-C (CA)
Title: Rake attachment for a skid steer
Inventor: KEIGLEY KEVIN V
IPC: E02F3/815
Filed: 1994-08-04
Granted: 2004-12-21
Abstract: A rake attachment for use on a skid steer, which can be used for multiple lawn and grounds preparation activities, such as grading, filling, leveling and scarifying. The rake attachment of this invention combines several useful attachment functions into a single compact design. The rake attachment includes a support frame that has spaced side support members to define an opening through which a skid steer operator may view the soil being worked. Scarifying teeth extend from the support frame to penetrate the ground for scarifying. The support frame includes tines which work and level the soil as it is being scarified by the scarifying teeth.
Patent CA-2135122-C (CA)
Inventor: MACGREGOR NORMAN JAMES
IPC: C25B1/04
Filed: 1994-11-04
Granted: 1996-09-17
Abstract: A synergistic process for the production of methanol comprises electrolysing water to produce hydrogen and oxygen; providing a feed stream of an organic combustible fuel; feeding at least a portion of the oxygen together with a stoichiometric amount of the organic combustible fuel to a partial oxidation reactor to produce off gases including carbon monoxide and hydrogen; feeding a stoichiometric amount of carbon monoxide and hydrogen to a methanol synthesizer to produce methanol.