baber/WOPTO huggingface dataset:
Patent CA-2064486-C (CA)
Title: Method of preparing semiconductor wafer with good intrinsic gettering
Inventor: COMEAU ALAIN
IPC: H01L21/322
Filed: 1992-03-31
Granted: 2001-08-21
Abstract: A method of preparing semiconductor wafers with intrinsic gettering capability, comprises the steps of: carrying out a high temperature oxidation in the on a doped semiconductor wafer for between about 20 to 60 minutes to form an initial oxidation layer; heating said wafer at a moderate temperature in an inert atmosphere for about 1 to 4 hours to initiate formation of crystal nuclei; ramping up the temperature in said inert atmosphere to a temperature of at least about 850°C at a rata of about 1 - 10°C/min.; and subsequently carrying out well diffusion on the wafer at a temperature of at least about 1000°C.
Patent CA-2071096-C (CA)
Title: Plastic lens
Inventor: MASE SHOJI
IPC: G02B1/115
Filed: 1992-06-12
Granted: 2001-10-16
Abstract: Disclosed is a plastic lens formed by laminating, in the order as described below, (A) a plastic lens substrate having a refractive index in the range of 1.50 to 1.70, (B) a primer layer containing a metal compound of at least one metal selected from the group consisting of Al, Ti, Zr, Sn and Sb and a polyurethane and having a refractive index that satisfies certain conditions, or (B') a primer layer formed from a poly- urethane containing at least one element selected from the group consisting of Cl, Br, I and S, and having a refractive index that satisfies the conditions, (C) a hard coating layer, and (D) a single-layered or multi-layered anti-reflection layer formed by vapor-depositing an inorganic substance.
Patent CA-2072934-C (CA)
Inventor: ASTON KARL WILLIAM
IPC: C07D259/00
Filed: 1992-07-02
Granted: 2007-08-28
Abstract: The present invention is directed to low molecular weight mimics of superoxide dismutase (SOD) represented by the formula:     (see formula I) wherein R, R', R1, R'1, R2, R'2, R3, R'3, R4, R'4, R5, R'5, R6, R'6, R7, R'7, R8, R'8, R9, and R'9 and X, Y, Z and n are as defined herein, useful as therapeutic agents for inflammatory disease states and disorders, ischemic/reperfusion injury, stroke, atherosclerosis, hypertension and all other conditions of oxidant-induced tissue damage or injury.
Patent CA-2073683-C (CA)
Title: System and process for forming thin flat hot rolled steel strip
Inventor: ROSTIK LIBOR F
IPC: B21B1/46
Filed: 1991-08-16
Granted: 2002-03-19
Abstract: A continuous process and system for making flat rolled steel or ferrous metal strip having a minimum thickness sufficient to allow substantially direct product manufacture therefrom, wherein a Platzer planetary mill (22) continuously receives an as-continuously cast endless slab of steel (19) or ferrous metal and effects a first reduction in thickness from the as-continuously cast thickness of the slab, a plurality of millstands (70, 72, 74, 76) sequentially receive the continuous strip (19) from the Platzer plane-tary mill (22) to effect a second reduction in thickness of at least about 50 % of the first reduced thickness to provide a continuous strip having an average thickness of less than about 1.8 mm, and electric induction reheaters (78, 80, 82) are placed between each adjacent pair of millstands (70, 72, 74, 76) to maintain the continuous strip (19) at a working temperature sufficient to effect the second reduction in thickness.
Patent CA-2076715-C (CA)
Title: Fiber viewer
Inventor: HARTNAGEL HEINZ
IPC: G02B6/25
Filed: 1992-08-24
Granted: 2002-02-12
Abstract: A viewer for inspecting the condition of an end face of an optical fiber which has been cleaved, while the fiber is still in the cleaving device. The viewer takes the form of a pocket-type microscope having a cylindrical body with an eyepiece at one end and an objective lens at the other end, and an adaptor at the end of the body having the objective lens. The adaptor has a plurality of legs having notches therein forming seats which are specially adapted to be mounted on fiber-supporting pads of the cleaver. The adaptor is removable from the body so that different adaptors may be used for different cleavers. The body fits in a socket of the adaptor which may be disposed at an angle with respect to the legs to allow oblique viewing of the fiber end face while it is still in the cleaver. The viewer may optionally be used with an inspection tray having a trunnion at one end, the adaptor of the viewer being designed to pivotally mount to the trunnion, allowing viewing of the fiber end face at any angle.
Patent CA-2077267-C (CA)
Title: Opening arrangement for a container package
Inventor: BERGGREN GORAN
IPC: B65D51/22
Filed: 1992-09-01
Granted: 2004-05-04
Abstract: Disclosed is an opening arrangement for a container package comprising a sealing portion formed with a threaded interior configuration, a pouring spout, one end of the pouring spout being attachable to a container package, another end of the pouring spout, forming a continuous, liquid-tight part, the pouring spout being formed with a threaded exterior configuration corresponding to the threaded interior configuration of the sealing portion, the pouring spout being inflexibly engaged with and at least partially surrounded by the sealing portion, and at least two penetration devices extending inwardly from the threaded interior configuration of the sealing portion toward the pouring spout.
Patent CA-2080343-C (CA)
Title: 5-benzyl barbiturate derivatives
Inventor: NAGUIB FARDOS N M
IPC: A61P43/00
Filed: 1991-04-12
Granted: 2001-10-23
Abstract: 5-benzyl barbiturate compounds for use as water-soluble uridine phosphorylase inhibitors are disclosed. These compounds are useful for reducing the toxicity and anemia induced by antiviral drugs, such as AZT, as well as for potentiating anticancer drugs and combatting their host-toxicity. These compounds are represented by the general formula:    where R1 = OCH3, and R2 = H, or an acyclotail of the general formula:    where R3 = H, CH2OH, or CH2NH2, and R4 = OH, NH2, or OCOCH2CH2CO2H
Patent CA-2082354-C (CA)
Title: Method and apparatus for extending material life in a bias transfer roll
Inventor: GROSS ROBERT A
IPC: G03G15/16
Filed: 1992-11-06
Granted: 1999-10-19
Abstract: A method and apparatus for extending the electrical life of a bias transfer roll is disclosed. The apparatus includes a biasing member comprising a bias roll member or other charging device for reversing current flow through the bias transfer roll. The apparatus of the present invention permits reversal of current flow through a bias transfer roll to replenish ions depleted therefrom during the transfer process.
Patent CA-2083552-C (CA)
Title: Gas spring
Inventor: COTTER JONATHAN P
IPC: F16F9/02
Filed: 1992-11-23
Granted: 2003-02-11
Abstract: A gas spring with a piston reciprocable in a chamber of a casing, a sealing assembly at the rear end of the casing through which the piston rod extends, and an end cap closing the rear end of the casing. The sealing assembly has a reinforcing ring having a sealing ring on one side and a wiper on the other side. The sealing ring and wiper are portions of a single body of elastomeric material molded to the reinforcing ring and integrally connected through one or more openings in the reinforcing ring. The casing wall is rolled radially inwardly over the sealing assembly into pressure contact with the reinforcing ring so that the sealing assembly becomes in effect an end cap for the front end of the casing. The rear end of the casing is rolled over the rear end cap by swaging into pressure contact with the end cap. A filler valve is disposed in the end cap. In use, the piston is normally retained on the rod by an enlargement having a diameter larger than the bore of the rod bearing so that in the unlikely event the piston separates from the rod the enlargement will be embedded in the bearing to retain the rod in the casing. If the piston separates from the rod a port in the rod vents to the atmosphere the compressed gas in the chamber.
Patent CA-2086509-C (CA)
Title: Non-cleavable soluble hybrid gp160 variant
Inventor: KIENY MARIE-PAULE
IPC: A61P31/18
Filed: 1992-04-30
Granted: 2003-07-01
Abstract: Immunogenic compositions comprising soluble, non-cleavable, chimeric HIV-1 gp160 variants capable of eliciting human immunodeficiency virus type 1 (HIV-1) gp160-specific antibodies are provided. These HIV-1 gp160 variants comprise the following regions: i) a first region derived from the gp160 of a first strain of HIV-1; ii) a second region derived from the gp160 of a second strain of HIV-1 wherein said second region fails to contain functional major and minor proteolytic cleavage sites (amino acids 483-486 and 475-479, respectively) and functional major and minor hydrophobic domains (amino acids 487-516 and 659-680, respectively); and iii) an optional third region, derived from the gp160 of said second strain, located at the amino terminus of the recombinant envelope.
Patent CA-2087004-C (CA)
Title: Tropolone derivatives and pharmaceutical composition thereof for preventing and treating ischemic diseases
Inventor: TSUZUKI KAZUO
IPC: A61K31/5375
Filed: 1991-08-27
Granted: 1998-04-21
Abstract: The present invention provides novel tropolone derivatives of formula (I), where in R10 is a substituted or unsubstituted piperazinyl or benzothiazolidinyl group, and pharmaceutical compositions thereof . These compounds are useful for the prevention and treatment of ischemic diseases, including cerebrovascular disease s and cardiovascular diseases.
Patent CA-2087181-C (CA)
Title: Group ivb, vb and vib metal hydrocarbyloxides, with alumoxane for olefin polymerization
Inventor: CANICH JO ANN MARIE
IPC: C08F4/60
Filed: 1991-07-12
Granted: 1998-07-07
Abstract: The invention is a catalyst system including a Group IVB, VB or VIB transition m etal hydrocarbyloxide component and an alumoxane component which may be employed in liquid, slurry or bulk phase reacto rs to polymerize ethylene and .alpha.-olefins to produce a high molecular weight, narrow molecular weight distribution homo- and co-polymer.
Patent CA-2089800-C (CA)
Title: Method and apparatus for improved oil recovery of oil and bitumen using dual completion cyclic steam stimulation
Inventor: BEATTIE CRAIG I
IPC: E21B43/24
Filed: 1993-02-18
Granted: 1998-02-03
Abstract: A method and apparatus whereby recovery from heavy oil and bitumen reservoirs may be increased over that achieved in the later stages of cyclic steam stimulation (CSS) operations.   Two sets of perforations perforate a steam chamber in a reservoir surrounding a well.  The two sets of perforations are isolated hydraulically from each other within the casing by a thermal packer.   Steam is then injected down the casing annulus into the upper set of perforations.   After  a period of  steam  injection, steam injection is halted and hydrocarbons are produced from the lower set of perforations through one of two strings of tubing extending through the thermal packer.          The  second  string  of  tubing  serves  to vent the well during production.  This process may be repeated over the life  of  the  well,  alternately  injecting  steam  and producing hydrocarbons.
Patent CA-2091096-C (CA)
Title: Method of treating papermaking fibers for making tissue
Inventor: HERMANS MICHAEL ALAN
IPC: D21B1/32
Filed: 1993-03-05
Granted: 2004-08-24
Abstract: The throughdryability of dewatered, but wet, sheets made from papermaking fibers can be significantly increased by subjecting an aqueous suspension of the fibers at high consistency to elevated temperatures with sufficient working of the fibers. Such a treatment is particularly effective for improving the efficiency of throughdrying processes used in the manufacture of certain products, such as tissues and paper towels, made from furnishes having a significant amount of secondary or recycled fibers.
Patent CA-2091366-C (CA)
Title: Powdered medicament dispensing device
Inventor: BACON RAYMOND
IPC: A61M15/00
Filed: 1991-11-29
Granted: 1997-06-03
Abstract: A powder inhalation device comprising a powder reservoir (42) capable of containing a powdered medicament (44) and a volume of air (46), a metering chamber (48) extending from the powder reservoir to allow removal of the powdered medicament from the reservoir in discrete amounts and a means for compressing the air in the reservoir wherein a passage is provided to allow air to vent from the powder reservoir, through the metering chamber and into atmosphere as the pressure of the air in the powder reservoir is increased.
Patent CA-2091367-C (CA)
Inventor: BACON RAYMOND
IPC: G01F11/00
Filed: 1991-11-29
Granted: 1996-12-17
Abstract: A metered dose inhaler for use with a pressurised aerosol container which is preferably breath-actuated.  A preload (80) is applied to the internal aerosol valve by an amount sufficient to result in a dose release, but this is prevented by the application of a pneumatic resisting force (130).  The inhaler comprises a release device (110) which, upon actuation, releases the resisting force and allows the preload to actuate the aerosol valve (135).  A metered dose of medicament is then released for inhalation by the patient.
Patent CA-2093060-C (CA)
Title: Micropower amplifier/transducer driver with signal expansion
Inventor: STADE WAYNE R
IPC: H04R25/00
Filed: 1993-03-31
Granted: 1997-07-22
Abstract: An amplifier which combines the low quiescent current requirements of a Class B transistor amplifier with the minimal distortion qualities of a Class AB amplifier. In one disclosed embodiment the amplifier is utilized as a receiver amplifier and as a transmitter in a modular telephone adapter for coupling a telephone headset to a conventional modular telephone comprising a handset and a base unit. Signal expansion circuitry takes advantage of the dynamic emitter resistance of transistors in the amplifier's output stage through modulation of collector current in the output transistors and inverted phase summation of the resulting error signal with the input signal. DC bias circuitry supplies a current supply which is relatively insensitive to changes in power supply or device parameters. In one disclosed embodiment of the invention, two such amplifiers are utilized in a modular telephone headset adapter which allows a telephone headset and a telephone handset to be switchably connected to a telephone base unit.
Patent CA-2093427-C (CA)
Inventor: REITZ MARVIN S JR
IPC: C12P21/00
Filed: 1991-10-17
Granted: 2008-01-15
Abstract: The present invention relates to the HIV-1 strains MN-ST1 and BA-L which are typical United States HIV-1 isotypes. The present invention relates to DNA segments encoding the envelope protein of MN-ST or BA-L, to DNA constructs containing such DNA segments and to host cells transformed with such contructs. The viral isolates and envelope proteins of the present in-vention are of value for use in vaccines and bioassays for the detection of HIV-1 infection in biological samples, such as blood bank samples.
Patent CA-2096086-C (CA)
Title: Containment device for contaminated building demolition
Inventor: HEFFNER DAVID C
IPC: E04B1/343
Filed: 1993-05-12
Granted: 1995-02-28
Abstract: A containment device for contaminated building demolition. A pre-engineered rigid steel frame building is supported on rail trucks movable on railroad tracks.   The railroad tracks  are positioned  on  opposite  sides and  along  the  length  of  the contaminated building to be demolished.  The rigid steel frame building has one open end and is sized larger than the width and height of the contaminated building.  This allows a portion of the  contaminated  building  to  be  movably  enclosed  by  the pre-engineered building.  A flexible liner material inside the pre-engineered  building,  at  the  open  end  attached  to  the contaminated building, and at the bottom of the pre-engineered building draped to be in contact with the ground seals off the interior of the pre-engineered building to prevent the release of contaminated particles during demolishing operations.  A hoist and cable are used to move the pre-engineered building on the railroad tracks.  After the covered portion of the contaminated building   is   demolished   and   the   area   remediated,   the pre-engineered building is moved on the railroad tracks to cover another portion of the contaminated building.   The process is repeated   until   the   contaminated   building   is   completely demolished.
Patent CA-2097197-C (CA)
Title: Plant for treating drill cuttings
Inventor: SIREVAG GUNNAR
IPC: E21B41/00
Filed: 1991-11-20
Granted: 2003-04-08
Abstract: The present invention relates to a plant for treating waste materials, which plant performs a safe and permanent depositing of waste materials as they are treated to obtain an injectable mass which may be injected in porous, underground formations. The plant according to this invention is treating waste materials including substantial portions of solid materials, and in particular drill cuttings, in connection with drill operations in connection with oil and gas wells in marine environments. The plant comprises a crushing machine having two separate input ports, the first primarily adapted for solid materials and the second primarily for liquid materials, and produces a dispersion of diminutive solid particles dispersed in the liquid. The plant comprises possibly feedback means for solid materials and circulating means for the finished dispersion and also injected devices.
Patent CA-2097508-C (CA)
Title: Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
Inventor: PARKER KEVIN J
IPC: H04N1/40
Filed: 1991-12-03
Granted: 2002-02-12
Abstract: A method of and system for rendering a halftone image of a gray scale image (500) by utilizing a pixel-by-pixel comparis-on (402) of the gray scale image against a blue noise mask (502) is disclosed in which the gray scale image is scanned on a pixel-by-pixel basis and compared on a pixel-by-pixel basis to an array of corresponding data points contained in a blue noise mask stored in a PROM (406) or computer memory in order to produce the desired halftoned image. Both digital and optically imple-mented halftone methods are disclosed. Application specific modifications of the blue noise mask as well as its use for producing hafltoned color images are also disclosed.
Patent CA-2098833-C (CA)
Title: Light control film with reduced ghost images
Inventor: COBB SANFORD JR
IPC: G02B27/00
Filed: 1991-12-20
Granted: 2002-02-19
Abstract: A louvered plastic film has louvers including central regions with relatively high coefficients of extinction and outer re-gions with relatively low coefficients of extinction. Such a film provides a dramatic reduction in ghost images.
Patent CA-2103301-C (CA)
Title: Catalyst for olefin polymerization and process for olefin polymerization using the same
Inventor: TASHIRO TAKASHI
IPC: C08F4/64
Filed: 1993-11-17
Granted: 2000-05-23
Abstract: Disclosed are a catalyst for olefin polymerization comprising (A) a compound of a transition metal in Group IVB of the periodic table which contains a ligand having a cyclopentadienyl skeleton, (B) an organoaluminum compound and any one of (C1) a Br~nsted acid; (C2) a material obtained by contacting (c-1) a magnesium compound with (c-2) an electron donor; and (C3) a material obtained by contacting (c-1) a magnesium compound, (c-2) an electron donor and (c-3) an organometallic compound with each other.      Also disclosed are processes for polymerizing an olefin in the presence of the above-mentioned catalysts for olefin polymerization. Such catalysts and processes for olefin polymerization as described above are excellent in olefin polymerization activity and economical efficiency.
Patent CA-2103508-C (CA)
Inventor: DE BRUIJN THEO J W
IPC: C10L1/32
Filed: 1993-08-06
Granted: 1999-06-29
Abstract: Several procedures are provided for reducing the viscosity and density of a water emulsion, or a water mixture, of a specified feedstock, e.g., tar sand bitumen, heavy oil, refinery residue or any heavy waste oil stream to make them amenable for transportation by pipeline from the field to refineries for further processing. The feedstock also contains a naturally-occurring, finely-divided mineral material The thermal rearrangement of such materials includes contacting that water emulsion or that water mixture with synthesis gas or carbon monoxide in the presence of a catalytic amount of a bifunctional catalyst that facilitates the water gas shift reaction and also promotes the hydrogenation and stabilization of cracking reaction products. The bifunctional catalyst includes that naturally-occurring, finely-divided mineral material which is already contained in the feedstock. The process is conducted under such conditions of pressure and temperature that a water gas shift reaction occurs. Thermally rearranged liquid oil having a lower viscosity and a lower density than that of the feedstock is recovered. Separate streams of gaseous carbon dioxide and gaseous hydrogen are also recovered therefrom.
Patent CA-2105066-C (CA)
Inventor: SANTHANAM ANAKKAVUR T
IPC: A61B5/055
Filed: 1992-04-01
Granted: 1996-07-09
Abstract: A coated indexable cutting insert (1) for wet and dry milling of cast irons is provided.  The substrate of the insert (1) is com-posed of a cemented tungsten carbide based composition containing about 5.7 to about 6.4 weight percent cobalt and about 2.9 to about 3.6 weight percent tantalum.  The coating includes two coatings of differing composition. The first coating is selected from titanium carbide, titanium carbonitride, and titanium nitride.  The second coating is alumina.
Patent CA-2105126-C (CA)
Inventor: HUDSON ROBERT LESLIE
IPC: D04H1/42
Filed: 1993-08-30
Granted: 2005-01-04
Abstract: Shelf stable nonwoven fabrics and films are made from polyolefin compositions which comprise a polyolefin which contains no more than a minor amount of a phenolic antioxidant, a water-sensitive stabilizer, a transition metal organic salt and an oxidizable unsaturated compound.
Patent CA-2120518-C (CA)
Title: A method of identifying ligands and antagonists of ligands
Inventor: FINK STEPHEN J
IPC: C12Q1/68
Filed: 1992-10-01
Granted: 1998-10-13
Abstract: The present invention relates, in general, to a method of identifying ligands an d antagonists of ligands. In particular, the present invention relates to a method of identifying ligands and antagonists of ligands which bind to cloned Gs- or G1-coupled receptors. The present invention also relates to a cell that comprises a recumb inant cyclic AMP sensitive reporter construct.
Patent CA-2121000-C (CA)
Inventor: CHAN ALEXANDER C
IPC: A61Q5/10
Filed: 1994-04-11
Granted: 2002-11-05
Abstract: 2-substituted-1-naphthols when coupled with an oxidation dye precursor in an oxidative dye system produce a long lasting intense color to hair. Use of such couplers makes available to the colorist novel oxidation hair dyes which surprisingly show a color shift to the red. Dyestuffs prepared through use of the 2-substituted-1-naphthol couplers are substantially more acid-fast compared to like dyestuffs using a 1-naphthol coupler.      Compositions and a method of dyeing hair are also disclosed.
Patent CA-2122837-C (CA)
Title: Method for refolding igf-1 to active conformation
Inventor: CHANG JUDY Y
IPC: C12R1/19
Filed: 1992-12-04
Granted: 2004-03-16
Abstract: A method for refolding insoluble, improperly folded IGF-I is provided, wherein the IGF-I, precipitated from prokaryotic host cells, is concurrently solubilized, unfolded, and refolded into a biologically active conformation in a single buffer. The buffer contains reducing agent and chaotropic agent to solubilize the IGF-1 at concentrations sufficiently low to allow solubilization and refolding to occur. Also provided is a triple-protease deficient E. coli host suitable for use in the process.