baber/WOPTO huggingface dataset:
Patent CA-2025741-C (CA)
Title: Non-tack chewing gum base
Inventor: CHUU MICHAEL S
IPC: A23G4/00
Filed: 1990-09-19
Granted: 1995-08-08
Abstract: A non-tack chewing gum composition having improved flavor and texture quality is provided wherein the chewing gum has a gum base comprising from about 0.1% to about 20% by weight terpene resin; from about 0.1% to about 10% by weight high melting wax; from about 0.1% to about 4% by weight low melting wax; from about 10% to about 30% by weight elastomer; from about 15% to about 30% by weight polyvinyl acetate; from about 1% to about 10% by weight emulsifier; from about 5% to about 20% by weight filler; and from about 15% to about 40% by weight gum base solvent.
Patent CA-2027894-C (CA)
Inventor: SESSIONS ROBERT W
IPC: B29C44/46
Filed: 1990-10-17
Granted: 1998-06-02
Abstract: The present invention is predicated on the discovery of a continuous process for the preparation of a polymer-based foam sheet at ambient temperatures wherein the foam is produced  from  a  reaction  product  capable  of  curing  at ambient temperatures formed by the reaction of a reactant composition comprising a prepolymer, such as an isocysanate-capped  polyether,  and  water  comprising  (a)  providing  a continuous substrate;  (b) depositing said reaction product onto said substrate;  (c) compressing said reaction product by subjecting said product to at least one compression of a predetermined degree after said reaction product has creamed but prior to the time said reaction product has  finally cured;  and (d)  finally curing said reaction product.   An apparatus for the production of the aforesaid foam is also contemplated.
Patent CA-2033026-C (CA)
Title: Procedure and apparatus for the preparation of bituminous mixtures
Inventor: BOON ARIE JAN
IPC: E01C19/10
Filed: 1990-12-21
Granted: 1995-10-03
Abstract: A procedure for the preparation of mixtures containing bitumen, in which the material to be processed is transported by gravity through a passage (5) between two vertically arranged heated surfaces (3, 4).
Patent CA-2039429-C (CA)
Title: Plastic box for ceiling fan support
Inventor: JORGENSEN ROBERT W
IPC: F04D29/40
Filed: 1991-03-28
Granted: 2001-12-04
Abstract: A plastic ceiling box adapted to support a ceiling fan thereon and adapted to be mounted on a structural member, such as a ceiling joist. The ceiling box comprises a body member having a lower wall and a pair of side walls defining a recess for snugly receiving the ceiling joist therein.      Box mounting holes.for receiving box mounting fasteners are located at opposite sides and ends of the lower wall for attaching the ceiling box to the joist. Openings for receiving fan supporting fasteners are formed in the body member adjacent the box mounting holes. Brackets at opposite ends of the body member aid in attaching the body member to the joist. This overall arrangement provides sufficient support and strength to resist dynamic loads of a ceiling fan even though the ceiling box is formed of plastic.
Patent CA-2040016-C (CA)
Title: Transfer apparatus providing improved transfer material guidance along a feed path to an electrophotographic image carrier
Inventor: KOIZUMI HIROMITSU
IPC: G03G15/00
Filed: 1991-04-08
Granted: 1999-02-02
Abstract: A transfer apparatus including a photoreceptor drum having a transfer position, feeding rollers for feeding out a sheet of paper upward obliquely, and a guide member provided between the feeding rollers and the photoreceptor drum and having a guide surface on a lower surface thereof to guide the paper to the transfer position along the guide surface.   In the transfer apparatus,  the structure is  simplified since the paper is guided by the single guide member.  Moreover, the feeding of the  paper  can  be  performed  smoothly,  since  frictional resistance is produced only on one side of the paper.   In addition, the guide surface is formed on the lower surface of the guide member, so that the paper can be supplied to the transfer position of the photoreceptor drum stably.
Patent CA-2043394-C (CA)
Title: Amperimetric measurement with cell electrode deplating
Inventor: MINA CHARLES J
IPC: G01R27/22
Filed: 1991-05-28
Granted: 1995-12-05
Abstract: In an amperimetric measurement apparatus comprising an amperimetric cell having a pair of electrodes arranged for contact with a solution, a potential difference is established between the electrodes, and a corresponding electric current is conducted in a forward direction through a current path which includes the electrodes and the solution.  An output corresponding to the current indicates the concentration of a solute in the solution.          The electrical charge passing through said cell in response to said potential difference is monitored by an integrator.  The forward current is interrupted repeatedly and a reverse electric current is imposed on the cell during the interruptions of forward current. The magnitude and duration of the reverse current are regulated in response to the electrical charge flow corresponding to the forward current, so that the net flow of charge through the cell over a time period including an equal number of intervals of forward and reverse current intervals is substantially zero.          Consequently, ionic contaminants, which tend to be plated onto cell electrodes as a result of the forward current are removed substantially completely by deplating, without the risk of producing inaccurate measurements by placing the cell in a reverse charging condition.
Patent CA-2048148-C (CA)
Title: Transmitter
Inventor: OHMAGARI SHINICHI
IPC: H03B21/02
Filed: 1991-07-30
Granted: 1995-11-28
Abstract: A transmitter using a dual conversion system which effects frequency conversion twice has a local oscillator for  generating  a  first  local  oscillation  signal,  a multiplier for multiplying the frequency of the first local oscillation signal to produce a second local oscillation signal,  a  first  mixer  for  mixing  the  first  local oscillation signal and first IF signal to produce a second IF signal, and a second mixer for mixing the second local oscillation signal and second IF signal to produce a signal to be transmitted.   A voltage controlled filter whose center frequency varies with the frequency of the first local oscillation signal is connected to the output of the first mixer.
Patent CA-2055645-C (CA)
Title: Tire casing tread for heavy vehicule
Inventor: LUROIS PATRICK
IPC: B60C11/11
Filed: 1991-11-15
Granted: 1999-02-16
Abstract: Tyre tread for heavy goods vehicles with a radial carcass comprising a plurality of circumferential rows of blocks (13) provided with incisions (15) and bounded by circumferential (10) and transverse (12) grooves, the said blocks being joined together in the circumferential direction by flats (14) which are arranged in the transverse grooves (12) and whose height increases from the centre towards the edges of the tread, the depth of the incisions (15) decreasing from the centre towards the edge of the tread and the density of the incisions being at its greatest in the middle zone (Z) of the tread. 
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Patent CA-2063081-C (CA)
Title: Magnetic digital video signal recording method
Inventor: YAMADA YUKARI
IPC: H04N19/98
Filed: 1992-03-13
Granted: 2001-08-28
Abstract: Disclosed is herein a method for magnetically recording digital video signals comprising the steps of: converting input digital video signals into data segmented into blocks each composed of a plurality of pixel data; compression-coding the blocks of pixel data block-by-block; converting the compression-coded data into channel-encoded data; and supplying the channel-encoded data to magnetic heads on a rotary drum for recording by such heads on a magnetic recording medium constituted by a nonmagnetic base having thereon a magnetic layer of at least one thin magnetic metal film which has an energy product of at least 75 G.cm.Oe, with the surface roughness of said magnetic recording medium being at most 0.003 µm in center line average height Ra, and with the surface roughness of said magnetic recording medium being at most 0.04 µm in ten point average height Rz.
Patent CA-2063800-C (CA)
Title: Audio signal processor circuit
Inventor: GLANVILLE DEREK NORMAN
IPC: H04B3/23
Filed: 1990-05-15
Granted: 2001-07-03
Abstract: An audio processor circuit for treating a digitally encoded incoming signal, the circuit comprising means (3, 12) for sampling the encoded signal at two or more sample frequencies, means (8, 13, 38, 40, 46) for calculating from the sampled values a cross-correlation function relevant to a particular time frame, the value of said function serving to control operation of an adaptive algorithm, in which the sampled signal portions are truncated (2, 5) such that only the arithmetic sign bit of each signal portion contributes to the function calculation. The hardware for this circuit can be built into the subscriber's line at a telephone exchange with only a small increase in the chip area needed for providing that line.
Patent CA-2068367-C (CA)
Title: Electromagnetic metering of molten metal
Inventor: GERBER HOWARD L
IPC: B22D11/10
Filed: 1992-05-11
Granted: 1996-06-04
Abstract: A descending stream of molten metal is electromagnetically metered by a primary coil surrounding an upstream portion of the stream. Alternating electric current flows through the coil, and the frequency of that current is controlled to optimize the electromagnetic efficiency (magnetic pressure/power loss) of the electromagnetic metering system.  Direct current can be added to the alternating current to also optimize electromagnetic efficiency.
Patent CA-2069472-C (CA)
Title: Triple lock handcuff with cushion grip
Inventor: CORCORAN DAN E
IPC: E05B75/00
Filed: 1992-05-22
Granted: 2001-10-30
Abstract: A triple-lock handcuff of the type having a blade pivotally joined to spaced-apart cheek plates for movement through a locking channel includes several improvements. The lock assembly includes first and second pawl members resiliently urged toward the channel independently of one another by separate springs. A key operated extractor block carries a yoke for moving both pawl members simultaneously away from the channel to open the handcuff. The first and second pawl members are spaced-apart within the locking channel. An elongate resilient cushion is arranged along the inner edge of the blade so as to assume a first unloaded profile capable of passing between the cheek plates and, alternately, a second profile when bearing upon a limb, incapable of passing between the cheek plates. A sleeve detachably fastens the cushion to the blade's inner edge while leaving the blade's outer edge free of overlay. When the cushion is loaded, the sleeve locks the cushion on the edge of the blade by urging a pair of opposed feet into grooves formed in the side of the blade.
Patent CA-2092370-C (CA)
Title: Forming resistors for integrated circuits
Inventor: BOYD JOHN M
IPC: H01L21/822
Filed: 1993-03-24
Granted: 1997-03-18
Abstract: A method is provided for forming multi-valued linear resistors for an integrated circuit using a single mask level.  A plurality of trenches are defined in a substrate.  Each trench has contact regions of a specific lateral dimension and a narrower portion extending therebetween.  Successive conformal layers of a first dielectric layer, a first conductive layer of high resistivity and a second conductive layer of lower resistivity are provided to fill the trench.  The amount of the second conductive layer which fills the trench depends on the width of the trench.  The resulting structure is planarized, preferably by chemical-mechanical polishing to provide fully planarized topography.  Advantageously when the first and second conductive layers are provided from layers of undoped and doped polysilicon respectively, the trench dimensions control the amount of dopant incorporated in each region of the trench.  After annealing to diffuse dopant, the wider end contact regions are heavily doped to form contact regions, and the intermediate narrow portion of the trench is doped to a level dependent on the width of the trench, thereby forming a resistive element having a resistivity inversely dependent on the trench width.  The method is compatible with CMOS, Bipolar and Bipolar CMOS processes.
Patent CA-2096481-C (CA)
Title: Mould for continuously casting metal and a method of manufacturing the mould
Inventor: KAWA FRANCISZEK
IPC: B22D11/055
Filed: 1993-05-18
Granted: 2000-04-25
Abstract: In continuous casting of metal, in particular of steel into billet and bloom cross-sections, moulds (3) comprising a copper tube are used. In the case of the mould according to the invention, the mould cavity cross-section at the inlet end, as opposed the mould cavity cross-section at the billet outlet end, has cross-sectional enlargements in the form of outward bulges (6) which are evenly distributed over its cross-sectional periphery. The dimension of the outward bulges (6) reduces in billet running direction and the cross-sectional shape of the billet is therefore shaped as it passes through the mould cavity (4). In order, with such moulds, to achieve as uniform a mould wall temperature as possible and reduced mould wear, it is proposed that the opposing outer surfaces (9 - 12) of the copper tube should be parallel or cylindrical.
Patent CA-2101903-C (CA)
Inventor: GIBBS TERENCE KEITH
IPC: H01Q1/28
Filed: 1993-08-04
Granted: 1997-09-16
Abstract: Disclosed is a combined directional antenna and rotor blade 101 for a helicopter 100.  The antenna comprises three or more  electrically  non-conductive  rotor  blades  200,  each having an electrical conductor 210 positioned parallel to the major axis of a respective rotor blade 200. Two of the electrical conductors 210, having angular positions nearer to  a predetermined angular position are connected via a connections  means  700  to  apparatus  for  transmission  or reception  of  radio  waves.  The  remaining  conductors  may either  be  connected  to  the  body  of  the  helicopter  or supplied  with  a  signal  out  of  phase  compared  to  that supplied to the two electrical conductors. Also disclosed is a  communications  system  including  apparatus  for  the transmission or reception of radio waves.
Patent CA-2114965-C (CA)
Title: Catalyseur de reformage a la vapeur et sa methode de preparation
Inventor: BANGALA DENIS NGOY
IPC: B01J37/00
Filed: 1994-02-04
Granted: 2004-07-27
Abstract: L'objet de la présente invention est de présenter un catalyseur amélioré ayant la composition chimique approximative suivante : Ni . Cr/MgO.La2O3.Al2O3. La présente invention comporte aussi un procédé de préparation du catalyseur de l'invention. Le catalyseur de l'invention a trait au domaine du réformage catalytique d'hydrocarbures paraffiniques ou polycycliques, liquides ou gazeux, à l'aide de méthode d'injection de vapeur ou autres méthodes analogues. Le catalyseur de l'invention possède une durée de vie augmentée en comparaison aux catalyseurs antérieurs, une bonne stabilité mécanique et thermique, peu de cokéfaction durant son usage, une faible perte de poids durant son usage et peut être régénéré après usage.
Patent CA-2115075-C (CA)
Inventor: STUART KEITH O
IPC: H04R9/04
Filed: 1992-08-04
Granted: 1999-04-06
Abstract: Organe de commande (50) de bobine mobile comprenant un noyau en matériau conducteur de flux magnétique (52, 52') possédant un socle (53) et un aimant (54), ainsi qu'une bobine conductrice de courant électrique (56, 56'). Le noyau (52, 52') comporte une première surface (58, 58', 58'') et un passage continu (60) situé dans ladite première surface (58, 58', 58''). Le passage (60) possède une paire de parois opposées (62, 64). L'aimant (54) se trouve en contact étroit avec la première desdites parois (62, 64) et se trouve éloigné de la deuxième desdites parois (62, 64), de façon à constituer un espace libre entre l'aimant (54) et la deuxième des parois (62, 64). L'aimant (54) possède une première face (94) présentant une première polarité magnétique placée en vis-à-vis de la première des parois (62, 64) et une deuxième face (96) présentant une deuxième polarité magnétique contraire, placée en vis-à-vis de l'espace libre. L'aimant (54) est, de plus, éloigné d'une partie inférieure (76) du passage (60), de façon que le flux magnétique est sensiblement normal à partir de la deuxième face (96) lorsqu'il traverse ledit espace libre vers la deuxième des parois (62, 64).
Patent CA-2122420-C (CA)
Inventor: MCNEILL DAVID BRIAN
IPC: H01B7/08
Filed: 1994-04-28
Granted: 2003-04-08
Abstract: This invention is directed to a high performance electrical telecommunication transmission cable, particular7.y for undercarpet applications. More precisely, this invention is directed to a low-profile, high performance flat cable, where the cable may be subjected to potentially damaging compressive forces from walking on an overlying carpet. The cable comprises a plurality of conductors arranged as plural sets of twisted pairs, with each conductor consisting of an inner conductive core surrounded by insulation, an outer dielectric member having plural longitudinally extending chambers, where each chamber includes two sets of the twisted pairs, spaced-apart and arranged in side-by-side fashion and generally parallel. The height of the chamber is dimensioned to exceed the wrap diameter of a set of a twisted pair of conductors. Adjacent chambers include a dielectric vertically disposed wall therebetween to provide resistance to compressive forces, and the twisted pairs therewithin exhibit a preferred twist on the order of 1j2 to 1 inch lay length. For cable lengths of at least 1000 feet, the cable is characterized by an attenuation and NEXT loss which exceed the Category 5 requirements of EIA TSB-36.
Patent CA-2125251-C (CA)
Title: A pharmaceutical composition for angiotensin ii-mediated diseases
Inventor: INADA YOSHIYUKI
IPC: A61P9/12
Filed: 1994-06-06
Granted: 2005-04-26
Abstract: This invention relates to a pharmaceutical composition of angiotensin II-mediated diseases, which comprises a compound having angiotensin II antagonistic activity of the formula (See formula I) wherein R1 is H or an optionally substituted hydrocarbon residue; R2 is an optionally esterified carboxyl group; R3 is a group capable of forming an anion or a group convertible thereinto; X is a covalent bond between the 2 phenyl rings or a spacer having a chain length of 1 to 2 atoms as the linear moiety between the adjoining phenylene group and phenyl group; n is 1 or 2; the ring A is a benzene ring having 1 or 2 optional substituents in addition to R2; and Y is a bond, -O-, -S(O)m-(wherein m is 0, 1 or 2) or -N(R4)-(wherein R4 is H or an optionally substituted alkyl group), or a pharmaceutically acceptable salt thereof in combination with a compound having diuretic activity or a compound having calcium antagonistic activity.
Patent CA-2125518-C (CA)
Inventor: REBLE JOHN H
IPC: A47G1/20
Filed: 1994-06-09
Granted: 2002-08-27
Abstract: A device for temporarily hanging and positioning pictures and the like, including at least one upright member supported between the  floor and the ceiling,  a horizontal member attachable to the vertical member at various positions therealong,  a series of picture hanger supports located at intervals along the horizontal member, diagonal bracket means extending  between  the  upright  and horizontal members,  and longitudinal adjusting means on the upright elements, leveling means associated with the horizontal member.
Patent CA-2125986-C (CA)
Inventor: SMITH DONALD PAUL
IPC: A21B1/00
Filed: 1993-10-15
Granted: 1999-12-21
Abstract: An oven with a heated interior volume (12), an access (30) into the heated interior volume, and a door (40) mounted adjacent to the heated interior volume for pivoting between closed access and opened access positions and having a concave interior space (44) defining an interior space adjacent the heated interior volume (12).
Patent CA-2132271-C (CA)
Title: Improved data collection method for use with chemical sensors
Inventor: BERNDT KLAUS W
IPC: G01N21/27
Filed: 1994-09-16
Granted: 2000-11-14
Abstract: A unique method for utilizing chemical sensors to determine whether a particular sample vial is evidencing bacterial growth includes directing radiation sources having closely spaced wavelengths into the sample vial. Emissions from the chemical sensor due to the two spectrally spaced radiation sources are monitored, and a ratio of their differences and sums is calculated. The inventive ratio eliminates station-to-station variation between the radiation sources or detectors, and also any lot-to-lot variations in the sensor materials. An absolute indication of the conditions within the sample vial may thus be taken with the inventive method.  In the prior art, station-to-station variations and lot-to-lot variations in the sensors resulted in varying readings for positive and negative samples. Thus, any one reading could not be utilized to make a prediction of whether a particular sample is a positive or a negative. With the inventive method, each absolute readings can be utilized to provide an indication of whether a particular sample is positive or negative at any time.
Patent CA-2134386-C (CA)
Inventor: RAGHAVAN KRISHNAN
IPC: H01P7/06
Filed: 1994-10-26
Granted: 1998-09-01
Abstract: A bandpass microwave filter (32) is constructed by use of a right cylindrical cavity resonator (10) wherein end regions  (22,  24)  of the resonator are tapered.   The tapering is accomplished by replacing end portions of a right cylindrical sidewall with frusto-conic sections (22, 24)  of side wall.   Each frusto-conic section joins a central cylindrical section (26) of the sidewall with a planar end wall  (14,  16).   Each of the end walls is provided with a coupling slot (28, 30) having dimensions substantially smaller than a half wavelength of the center resonant  frequency  of  the  resonator  so  as  to  be  a nonresonant slot.   The slots in the end walls may be coupled to rectangular waveguides (34, 36) which form input and output ports by which electromagnetic signals are applied to and extracted from the resonator.
Patent CA-2136635-C (CA)
Title: Process of removing ions from solutions using a complex with sulfur-containing hydrocarbons also containing electron withdrawing groups bonded to a solid hydrophilic matrix
Inventor: BRUENING RONALD L
IPC: B01J15/00
Filed: 1993-06-08
Granted: 2005-01-18
Abstract: A method for the removal and concentration of desired ions such as Pd(II), Ru(III), Pd(IV), Au(III), Au(I), Ag(I), and Hg(II) from a multiple ion source solution which may contain larger concentrations of other undesired ions including H+ com-prises bringing the source solution into contact with a compound comprising a sulfur and electron withdrawing group con-taining ligand covalently bonded through an organic spacer silicon grouping to a solid inorganic support. The sulfur and electron withdrawing group containing ligand portions(s) of the compound has an affinity for the desired ions to form a complex thereby removing the desired ions from the source solution. The desired ions are removed from the compound 4y contacting the compound with a much smaller volume of a receiving solution having a greater affinity for the desired ions than does the sulfur and electron withdrawing group containing ligand portion of the compound. The process is useful in removing desired or unwanted ions from acidic waste streams, metal refining streams, and other industrial or environmental streams. The invention is also drawn to the sulfur and electron withrawing group containing ligands covalently bonded through a spacer grouping to a hydrophilic inoragnic solid support material.