baber/WOPTO huggingface dataset:
Patent CA-2003702-C (CA)
Inventor: VANDENBROUCKE JACKY
IPC: B23D35/00
Filed: 1989-11-23
Granted: 1993-08-31
Abstract: ABSTRACT OF THE DISCLOSURE           The  apparatus   comprises  a  pair  of  rotatable devices  each holding  a plurality of metal  shaping and/or cutting rollers,   the rollers  of  one  device meshing with rollers of the other device to produce specific designs or widths  of  material.   This  is  made  possible  by  merely selecting suitable rollers of both sets and when production of  a  specific  metallic  section  of  desired  widths  are terminated,   other  rollers  are  selected  by  rotating  the rotatable devices.   When suitable rollers have been selected they are locked in operating position and when another design or widths are required, the devices are unlocked, a selection is made,  and the devices are again locked to produce the new metallic section or widths of material.
Patent CA-2006769-C (CA)
Title: 2-and 3-aminomethyl-6-arylcarbonyl-2,3-dihydropyrrolo [1,2,3,-de] -1,4-benzoxazines useful as analgesic agents
Inventor: D AMBRA THOMAS EDWARD
IPC: C07D498/06
Filed: 1989-12-28
Granted: 2002-03-12
Abstract: 2- and 3-Aminomethyl-6-arylcarbonyl-2,3-dihydropyrrolo[1,2,3-de]-1,4-benzoxazines of the formula:    (wherein R is hydrogen or substituent; R5 is hydrogen or lower-alkyl; R6 is optionally substituted phenyl or naphthyl and N=B is optionally substituted amino), useful as analgesic agents, are prepared either by reaction of a 2- or 3-aminomethyl-2,3-dihydropyrrolo[1,2,3-de]-1,4-benzoxazine with an arylcarboxylic acid halide in the presence of a Lewis acid or by reaction of a 2- or 3-aminomethyl-4-amino-3,4-dihydro-2H-1,4-benzoxazine with a 1-lower-alkyl-3-aryl-1,3-diketone or with a .beta.-aryl-.beta.-ketopropionaldehyde under dehydrating conditions and heating the resulting hydrazone in an acid medium.
Patent CA-2010444-C (CA)
Title: Liquid detergent products
Inventor: RUSSELL STEPHEN W
IPC: C11D17/00
Filed: 1990-02-20
Granted: 2000-05-16
Abstract: A substantially non-aqueous liquid detergent product comprising a liquid surfactant phase and a solid phase dispersed therein, the liquid surfactant phase comprising an ethoxylated alcohol having an average of Pram 5 to 8 ethylene oxide (EO) groups per molecule, at least 60% having a number of ethylene oxide groups within ~2EO of the average and the alkyl chain distribution being such that less than 2% has a chain length of 9 or less carbon atoms, at least 90% has a chain length between l0 and 12 carbon atoms and less than 10% has a chain length of 13 or more carbon atoms, said percentages being by weight of the ethoxylated alcohol.
Patent CA-2012493-C (CA)
Title: 1-hydrocarbyloxy hindered amine mercaptoacid esters, thioacetals, sulfides and disulfides
Inventor: RAVICHANDRAN RAMANATHAN
IPC: C08K5/5317
Filed: 1990-03-19
Granted: 2000-01-18
Abstract: 1-Hydrocarbyloxy hindered amine mercaptoacid esters, thioacetals, sulfides and disulfides are effective light stabilizers for protecting a variety of polymer substrates from the deleterious effects of actinic light. These compounds are selected from compounds of the formulae (see above formula I) (see above formula II) (see above formula III) (see above formula IV) (see above formula V) (see above formula VI) (see above formula VII) (see above formula VIII), or (see above formula IX) in which x is 1 or 2, R1 and R2 are independently, for example, methyl or ethyl, R3 is C1-C3 alkylene, E is, for example, C1-C18 alkyl, T1 is, for example, 1,1-C1-C18 alkylidene, T2 is CH-R4-CH in which R4 is, for example, C1-C10 alkylene, L is a carbonyl group containing moiety, or may be a C2H4-containing-cyano or -phospho group, and L1 may be H or the same as L.
Patent CA-2013174-C (CA)
Title: Discharge lamp lighting device
Inventor: UEOKA ATSUSHI
IPC: H05B41/392
Filed: 1990-03-27
Granted: 1994-09-13
Abstract: A discharge lamp lighting device includes a DC power supplying means which supplies as  superposed on a high frequency  power  fed  to  a  low-tension,   mercury-arc discharge  lamp  a  DC  power  of  a  level  capable  of maintaining a discharge upon low light flux lighting, the lamp being thereby made stably lighted to an extremely low level of the flux of light.
Patent CA-2016379-C (CA)
Title: Three tube color projection system having at least one tube without an interference filter
Inventor: TSUKAGOSHI KAZUO
IPC: H01J31/10
Filed: 1990-05-09
Granted: 1993-07-20
Abstract: ABSTRACT OF THE DISCLOSURE         A projection television system having three cathode ray tubes one of which has a display window, a fluorescent material layer  disposed on the innermost of the display window,  and  a multilayered  interference filter disposed between the  display window and the fluorescent material layer and being composed of a  number of layers which are alternately manufactured  from  a high  refractive  index  material and a  low  refractive  index material  and also at most two of which have only  the  display window  and the fluorescent material layer, whereby images  are produced  with as  high  brightness  as  by  the  conventional projection  system by means of a beam current supply  which  is increased  as much to compensate a drop in luminance  intensity caused by the filter removal.
Patent CA-2019535-C (CA)
Title: Heat curable mixtures and their use for the formation of coatings on heat resistant substrates
Inventor: SCHMALSTIEG LUTZ
IPC: C08G18/80
Filed: 1990-06-21
Granted: 2000-02-22
Abstract: The present invention relates to a coating composition which may be cured at elevated temperature and is based on A) a polyisocyanate component containing at least one organic polyisocyanate having reversibly blocked isocyanate groups and a molecular weight of 398 to 25,000, excluding the weight of the blocking agent, the isocyanate groups being reversibly blocked with a secondary monoamine and B) an isocyanate reactive component containing at least one organic polyamine having a molecular weight of 60 to 499 and at least two primary amino groups.      The present invention also relates to the use of these coating compositions for the formation of coatings on heat resistant substrates.
Patent CA-2020899-C (CA)
Title: Generalized viterbi decoding algorithms
Inventor: SESHADRI NAMBIRAJAN
IPC: H03M13/23
Filed: 1990-07-11
Granted: 1995-09-05
Abstract: A data transmission system and method for processing speech, image and other data disclosed which embodies parallel- and serial-generalized Viterbidecoding algorithms (GVA) that produce a rank ordered list of the L best canditates after a trellis search. Error detection is performed by identifying unreliable sequences through comparison of the likelihood metrics of the two or more most likely sequences. Unreliable sequences are re-estimated using inter-frame rebundancy or retransmission.
Patent CA-2023244-C (CA)
Title: Optical amplifier
Inventor: SASAKI KAZUYA
IPC: H01S3/063
Filed: 1990-08-14
Granted: 1993-10-05
Abstract: ABSTRACT OF THE DISCLOSURE           An optical waveguide having a first cross section is thinned to constitute a thinned portion having a second cross section, as long as a predetermined length.  The surface of the thinned portion is contacted with a laser glass member doped with a rare earth element, such as Er.  Due to the thinned diameter' the optical fiber is optically coupled with the laser glass mem-ber.  A pumping light is input either into the optical waveguide together with a signal light or directly into the laser glass member.  Signal light coupled from the thinned portion to the laser glass member is amplified by stimulated emission of the laser glass.  The thus amplified signal light is coupled back  to the thinned portion so as to propagate along the optical wave-guide.  The thinned portion can be as short as several centimeters compared with ten meters to more than one hundred meters for a conventional optical amplifier.  In the optical waveguide where the pumping light is directly input to the laser glass member, a complicated multiplexer is not necessary, resulting in a reliable operation of the amplifier.
Patent CA-2030846-C (CA)
Title: Ultrasound calibrator
Inventor: CONTI JAMES C
IPC: G01F25/00
Filed: 1990-11-26
Granted: 1996-02-20
Abstract: An ultrasound calibrator apparatus and method for calibrating ultrasound equipment.  The apparatus includes a pair of opposed bellows oscillatorily transferring a fluent medium back and forth through a channel with a well-defined cross-sectional area such that the flow velocity therethrough is known.  A probe in communication with ultrasound equipment to be tested is submerged in a reservoir which is situated in close proximity to the channel such that the flow velocity can be measured therewith.  The ultrasound equipment is then adjusted to correct the discrepancies between the known and measured velocities so as to calibrate the ultrasound equipment.
Patent CA-2038841-C (CA)
Title: Optical motion sensor
Inventor: COLMAN FREDRIC C
IPC: G01P13/00
Filed: 1991-03-22
Granted: 1996-05-14
Abstract: An optical motion sensor is provided for monitoring movement of a mechanical device, particularly such as an infusion pump of the type used for controlled delivery of medication to a patient.  The motion sensor includes a disk member mounted upon a selected mechanical output component driven by the  infusion pump,  such that the disk member undergoes displacement during normal pump operation.    The  disk  member  defines  a  pattern  of reflective and substantially nonreflective surface zones which  are  alternately  illuminated by  a  light  source during normal pump operation.  A light detector responds to the  level  of  reflection  from the disk member to provide an output signal which varies according to disk member displacement.  This output signal is connected to a controller for comparison with drive signals supplied to the infusion pump, to verify proper mechanical output operation of the pump.
Patent CA-2039039-C (CA)
Title: Pyrimidine nucleoside derivative and antiviral agent containing the derivative as active ingredient
Inventor: MIYASAKA TADASHI
IPC: C07D239/58
Filed: 1991-03-26
Granted: 2001-05-15
Abstract: The invention is a pyrimidine nucleoside derivative represented by the following formula (I):    wherein R1 represents ethyl group or isopropyl group; R2 and R3 independently represent hydrogen atom, an C1-C3 alkyl group or chlorine atom; X represents oxygen atom or sulfur atom; and Z represents sulfur atom or methylene group;  with the proviso that R2 and R3 do not simultaneously represent hydrogen atoms when X represents oxygen atom and Z represents sulfur atom, or a pharmaceutically acceptable salt thereof. The pyrimidine nucleoside derivative and pharmaceutically acceptable salt thereof show a markedly higher anti-retroviral activity than conventional analogous compounds and have a relatively low toxicity against the host cells, and therefore, are useful as an active ingredient of antiviral agent.
Patent CA-2040751-C (CA)
Title: Water-in-oil emulsion explosive having a dispersed aqueous gassing solution
Inventor: HOUSTON RICHARD C M
IPC: C06B47/14
Filed: 1991-04-18
Granted: 2001-04-17
Abstract: This invention relates to the manufacture of an explosive. in the form of a water-in-oil emulsion comprising a discontinuous phase which forms an oxidizing salt-containing component and a continuous phase which is immiscible with the discontinuous phase and which forms a fuel component, a method of sensitizing the explosive to detonation which comprises dispersing in the emulsion an aqueous gassing solution comprising a chemical gassing agent and a water-soluble or water-miscible organic compound capable of promoting the formation of gas bubbles in the emulsion, to form an emulsion having a density at atmospheric pressure of 0,80 - 1,30 g/cm3 at 25°.
Patent CA-2041001-C (CA)
Title: Composition for preventing stress cracks in poly(alkylene terephthalate) articles and methods of use therefor
Inventor: ROSSIO CHARLES
IPC: C10M105/72
Filed: 1991-04-23
Granted: 1998-02-24
Abstract: Stress cracking in poly(alkylene terephthalate) articles of manufacture is prevented by applying to the article a hydrophillic-substituted aromatic hydrocarbon having either an alkyl or aryl side chain, and a free-base amine. Preferably, the stress crack inhibitor is applied to the article in the form of an aqueous fatty acid-based lubricant.
Patent CA-2041104-C (CA)
Title: Process for chain printing of a pattern onto a fabric, and application device
Inventor: CORBIERE CLAUDE
IPC: D06B11/00
Filed: 1991-04-24
Granted: 2001-05-29
Abstract: Method for the warp printing of a design on a machine for the production of warp fabric, characterised in that it involves: 
 
  - between the exit of the beam (2), but before the inserting or tying member, bringing into the vicinity of the lap of warp yarns (1) a transfer paper (16) carrying a dye design capable of being transferred onto the yarns under the effect of heat; 
  - then, causing this transfer paper (16) to run in a speed ratio with the speed of advance of the lap of warp yarns (1); 
  - then, still continuously, pressing down permanently this transfer paper (16) running against the lap of warp yarns which likewise runs in this ratio with the paper, taking care to direct the sheet of transfer paper carrying the design towards the lap of warp yarns, and simultaneously transferring this design onto the yarns under the continuous effect of this pressure and of dry heat; 
  - and finally, separately receiving the printed fabric obtained after insertion and the transfer paper, the design of which has been at least partially transferred onto the lap of warp yarns (1). 
 
<??>The invention also relates to an installation for carrying out this method. 
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Patent CA-2043321-C (CA)
Title: Antenna for portable radio equipment
Inventor: IWASAKI HIROYUKI
IPC: H01Q9/14
Filed: 1991-05-27
Granted: 1997-08-19
Abstract: An antenna for portable radio equipment serves as a .lambda./2 wavelength long antenna when extended or as a less than .lambda./4 wavelength long antenna such as a .lambda./8 wavelength long antenna when contracted.   Both of such antenna configurations are matched by a single matching circuit with respect to impedance. The antenna radiates power efficiently in the horizontal plane.
Patent CA-2043325-C (CA)
Title: Contrast correction device
Inventor: KAGEYAMA ATSUHISA
IPC: H04N5/202
Filed: 1991-05-27
Granted: 1996-02-20
Abstract: The present invention relates to a contrast correction device for correcting the contrast of an image formed by video signals.  The device includes a brightness/darkness detecting circuit for detecting a tone level of the image and for producing a bright signal when the tone level is greater than a predetermined brightness, and a dark signal when the tone level is less than a predetermined darkness.  A correction circuit is provided for correcting a luminance signal by a negative gamma correction in response to the bright signal, and a positive gamma correction in response to the dark signal.  Thus, the contrast of bright areas in the image are enhanced when the bright signal is produced, and the same are suppressed when the dark signal is produced.
Patent CA-2051693-C (CA)
Title: Allosteric hemoglobin modifiers
Inventor: ABRAHAM DONALD J
IPC: C07C235/38
Filed: 1991-02-06
Granted: 2005-06-07
Abstract: Allosteric hemoglobin modifier compounds having general structural formula (I) wherein X and Z may be CH2, NH or O.
Patent CA-2052042-C (CA)
Inventor: RAK STANLEY F
IPC: B01J49/00
Filed: 1991-09-23
Granted: 2001-07-17
Abstract: A low salt level sensor comprising a float within a brine tank, means for detecting whether said float has risen in response to the addition of a predetermined amount of water to said brine tank to a height such that an adequate supply of salt is present in said brine tank and means for indicating if the float has not risen high enough. A method of detecting whether the salt level is low in the brine tank of a water treatment system is also described.      According to this method, brine is removed from the brine tank and a predetermined amount of water is added. A determination is then made as to whether the brine level has reached a height such that an adequate supply of salt is present in said brine tank and an indication is provided if the brine level is below this height.
Patent CA-2052922-C (CA)
Title: Optical waveguide type wavelength filter
Inventor: HAKOGI HIRONAO
IPC: G02B6/122
Filed: 1991-10-07
Granted: 1995-03-28
Abstract: An optical waveguide type wavelength filter having a Fabry-Perot resonator portion formed in the waveguide.  The Fabry-Perot resonator portion has a length corresponding to the resonator length of the propagated light and formed by cutting at least two suitable gaps in the optical waveguide.  By varying the index of refraction of the Fabry-Perot resonator portion by refractive index varying means, the resonator length L of the Fabry-Perot resonator portion is optically varied and, thereby, the filter characteristic of the Fabry-Perot resonator portion can be made variable.
Patent CA-2069141-C (CA)
Title: Temperature-measuring slab mould
Inventor: PLESCHIUTSCHNIGG FRITZ-PETER
IPC: B22D11/22
Filed: 1992-05-21
Granted: 2002-11-12
Abstract: In a liquid-cooled plate mould used to produce strands of steel in slab form, the taper of narrow face sides that are adjustable between wide faces is regulated. Initially the temperature of the cooling liquid at the cooling agent outlet of the panel is measured for each of the liquid-cooled panels of a mould. A specific temperature value relative to the cooling surface is formed from each of the measured temperatures, the specific temperature values of opposing panels are compared. In addition, a comparison of the temperature values of each panel is undertaken with the specific temperature values of the adjacent panels. In the event of a difference between the temperature values, an adjusting value at the size of the differential value is sent to the drive system of that narrow face that delivers the lower temperature value, in the sense of increasing the taper.
Patent CA-2082465-C (CA)
Title: Covered frame shelter and method of erection
Inventor: HANNINEN ARVI K
IPC: E04H15/18
Filed: 1992-11-09
Granted: 1994-11-15
Abstract: A generally rectangular shelter with a readily assembled frame mounted on a base and covered with a flexible sheet material secured to the frame and base is provided.  The base is normally of wood and is placed on the ground or other planar surface   Spaced at a desirable distance along each side of the base are pivotal and adjustable supports fixed to the base.  To the supports are connected a series of assembled frame ribs transverse to the length of shelter.  The frame ribs are normally assembled in an arcuate shape from several pieces of tubing coupled together by a special coupler.  The tubes are adapted to receive other tubes by having pin receiving tabs welded to them in appropriate places.  Purlins or other spacers are connected between the frame ribs so that all the frame ribs may be drawn up from an assembled horizontal position to an upright position as a unit.  Cross bracing is placed between the frame ribs as required and a cover formed of several panels of flexible sheet material is then placed over the erected frame to form a basic shelter. The several panels are generally insulated fabric and are secured to the frame ribs by having all edges carrying a single continuous draw cord.  The panels overlap with the overlapping side edges carrying the draw cord partially wrapping each panel side edge around an adjacent frame rib covered by each panel in a sealing and securing relationship when the panels are tightened by the pivotal and adjustable supports.  The ends of the panels include grommets that receive fasteners that are imbedded in the base for total securement of the panels.  Front and rear basically semi-circular panels are each secured to an end rib and the base in a similar manner and are placed against front and rear end wall posts of front and rear end walls which are assembled before or after pivoting and are connected to the base and an end frame rib.  The total cover or the basic shelter cover is tightened by vertically adjusting all the pivotal and adjustable supports fastened to the base each carrying a bottom end of a frame rib.
Patent CA-2084328-C (CA)
Inventor: BOURQUE RENE
IPC: A63B71/12
Filed: 1992-12-02
Granted: 1997-01-07
Abstract: A shin pad for ice hockey or other sports is described, together with a method of manufacturing shin pads. The shin pad includes an elongated flexible lining, and a rigid or semi-rigid knee shield secured to the lining.  A lower aspect of the knee shield has one or more lateral slots defined therein. In the preferred embodiment, there is one such slot, generally centrally located.  A rigid or semi-rigid shin shield is provided with a corresponding tab or tabs projecting from the upper end thereof for insertion in the slot(s), thereby locating the upper end of the shin shield against the lining.  The lower portion of the shin shield is secured against the lining by any suitable conventional means such as sewing or one or more rivets.  In the method of manufacturing the shin pad, the knee shield is secured to the lining in conventional fashion, such as by sewing.  The tab(s) on the shin shield is then simply inserted in the slot(s) on the knee shield, the shin shield is then positioned against the lining, and the lower portion of the shin shield is then secured against the lining, for example by a single fastener. Preferably, the fastener has a broad flexible base portion, a bell-shaped portion leading from the base portion to a shoulder portion, and a post projecting from the shoulder portion and having an annular flange extending therefrom.  The shin shield and the lining are trapped between the shoulder portion and the annular flange.
Patent CA-2085374-C (CA)
Title: Continuous rbcod measurement
Inventor: BRIDGER JOHN STEPHEN
IPC: C02F3/00
Filed: 1991-07-03
Granted: 2002-11-19
Abstract: The invention provides a method and apparatus for providing periodical measurements of the real-time readily bio-degrad-able chemical oxygen demand (RBCOD) of a wastewater stream. The apparatus includes a bio-reactor (1) having an inlet (6) for accepting a continuous feed from the stream and an overflow outlet (7), whereby a sample volume can be maintained within the reactor. A feed rate is chosen to ensure an hydraulic retention time (HRT) in the reactor sufficient for substantially complete oxi-dation of the readily biodegradable compounds in the feed. Air (2) is periodically passed through the sample volume for set peri-ods and the oxygen up-take (OUR) is determined by measuring the dissolved oxygen content via a probe (3) during the air-off periods. An RBCOD value is then calculated for each OUR value. The invention may be used to monitor the performance of was-tewater treatment plants.
Patent CA-2087522-C (CA)
Title: Temperature-independent linear-to-exponential converter
Inventor: FELDT DANIEL CHARLES
IPC: G06G7/24
Filed: 1992-05-08
Granted: 1996-10-08
Abstract: A linear-to-exponential converter circuit (100) for generating a temperature-independent signal (270) which is exponential-ly related to an input signal (104).  An amplifier stage (160) forming an exponential multiplier is comprised of a bipolar junction transistor (264) which, characteristic of bipolar junction transistors, generates a current at a collector elertrode (270) which is de-pendent upon temperature.  A signal to be amplified by the exponential multiplier formed of the bipolar junction transistor is first provided to a temperature compensation circuit (108).  The temperature compensation circuit introduces a temperature dependen-cy upon the input signal which is the inverse to that of the temperature dependency of the bipolar junction transistor of the ampli-fier stage. The temperature dependency of the amplified signal is removed, and a temperature-invariant signal is produced there-by.