baber/WOPTO huggingface dataset:
Patent CA-2046518-A1 (CA)
Title: Filter
Inventor: HAERLE HANS A
IPC: F01N3/28
Filed: 1991-07-09
Abstract: A filter for removing impurities from exhaust gases, in particular from exhaust gases of an internal combustion engine, is provided with a filter body, which is composed of a multiplicity of form-pressed high temperature-resistant and sintered filter plates (1) of metal powder, metal filings, metal fibres or a mixture thereof, which are arranged one above the other or one behind the other and form a multiplicity of flow channels between each other by being held at a distance from each other by spacers. The flow channels, to form inlet and outlet channels (4,5), are each open on one side and closed on the other, the walls of the filter plate (1) which are between the inlet and outlet channels (4,5) forming filter surfaces. In the outlet channels (5), one or more inlays (7) are inserted, which are composed of catalytic materials, or which are coated with catalytic materials. <IMAGE>
Patent CA-2046556-A1 (CA)
Title: Leak detecting method for vessels
Inventor: ASAI KAZUHIRO
IPC: G01M3/22
Filed: 1991-07-09
Abstract: ABSTRACT     A leak detecting method for vessels in which a  gas of a given pressure is mixed with sulfur hexafluoride of  a  given  partial  pressure  and  the  mixture  is introduced into a  vessel, and a gas in the vicinity of an outer peripheral surface of the vessel is sucked by a gas sucking mechanism.     According to one form of the invention, the sucked air is introduced into an absorption cell and a P(16)-line  laser  light  of  a  carbon  dioxide  gas  laser  is introduced into the absorption cell.  Then, the presence or  absence of absorption of the P(16)-line laser light within  the  absorption  cell  is  detected  in  accordance with a change in the transmitted light intensity of the ?eak  in  the  pressure  vessel  is  discriminated  in accordance  with  a  result  of   the  detection.    In accordance with another form of the invention the sucked air is introduced into a multiple reflection absorption cell and a P(16)-line laser light of a carbon dioxide gas laser and a reference light slightly different  in wavelength   from    the   P(16)-line laser   light   are introduced into the multiple reflection absorption cell.       Then, the presence or absence of absorption of the P(16)-line   laser   light   within   the  multiple   reflection absorption cell is detected in accordance with a change in a light intensity ratio between the reflected lights of the P(16)-line laser light and the reference light, and the presence or absence of a leak in the pressure vessel is discriminated in accordance with a result of the detection.
Patent CA-2052213-A1 (CA)
Title: Clothing for protection of gonadal region
Inventor: SERVANT RAYMOND H
IPC: G21F3/02
Filed: 1991-09-25
Abstract: ABSTRACT OF THE DISCLOSURE:      An article for protection of gonadal areas, of a human body, against radiation, is disclosed.  The article comprises (a)  an elongated sheet of fabric material with a first end and a second end and having a width of 10-30 cm;          (b)  at least two complementary fastener means; and (c)  a layer of flexible radiation protection material with a width of 10-30 cm and extending longitudinally from the second end towards the first end.  One of the fastener means is located juxtaposed to the first end and the other is spaced apart from the first end, and the sheet of fabric is adapted to fold back on itself and be held in the folded position by the fastener means, thereby forming means to secure the article around the waist of a human body.  The layer of radiation protective material has energy attenuation properties at least equivalent to 0.1 mm of lead at 100 keV, and is of a length such that when the fold is located at waist level on a human body the layer extends from above to below the gonadal area.  The sheet of fabric material and the layer of flexible radiation protection material are attached circumferentially on three sides so as to form a pouch.  The article is intended for use in the protection of the gonadal regions of the human body e.g. of operators of x-ray or other radiation emitting sources.
Patent CA-2054754-A1 (CA)
Title: Enzymatic membrane method for the synthesis and separation of peptides
Inventor: BROSE DANIEL J
IPC: C07K5/10
Filed: 1990-04-23
Abstract: The present invention discloses a method for the enzymatic synthesis of a peptide. A protected peptide having a C-terminal carboxylate group or a protected N-acyl amino acid having an alpha carboxylate group is reacted with a protected peptide having an N-terminal ammonium group or a protected amino acid having an alpha ammonium group in the presence of a condensation enzyme under conditions in which the carboxylate group and the ammonium group condense to form a protected, uncharged, peptide product. This peptide product is transported across a water-immiscible hydrophobic phase disposed in a hollow fiber lumen into an aqueous product phase and is removed from the aqueous product phase to prevent back diffusion across the water-immiscible hydrophobic phase. Reverse osmosis and other separation techniques may be utilized to remove the peptide product from the product phase. The water-immiscible hydrophobic phase functions as an ion rejection membrane separating the aqueous reaction phase from the product phase creating oil/water interfaces with each of the aqueous phases. The present invention can be practised either in ILM's supported on microporous hollow fiber modules, or in oil/water contactors made of hydrophilic hollow fiber. An integrated process for the enzymatic resolution of D-, L-phenylalanine isopropyl ester and the racemization and recycling of D-phenylalanine isopropyl ester is also disclosed.
Patent CA-2055847-A1 (CA)
Inventor: MIZOGUCHI SHOICHI
IPC: H03H17/00
Filed: 1991-11-19
Abstract: A decision feedback equalizer for equalizing a received analog baseband signal (1) has a gain control circuit (11) which compresses the amplitude of the baseband signal (1) to 1/K (K ? 1).  The compressed signal is converted to a digital signal by an analog-to-digital converter (12).  A decision feedback equalizer section (101) has a feedforward equalizer (201) to which the digital signal is applied, a feedback equalizer (202), and an adder (13) for adding the outputs of the feedforward and feedback equalizers.          A postprocessor (15) discriminates the adder output (S1') which has been multiplied by K to thereby output a received data signal (d) and a discrimination error signal (e).  An expansive decision circuit (104) expands the adder output by L times (L > 1), discriminates the expanded signal, and delivers the result of discrimination to the feedback equalizer (202).  A control signal generator (102) feeds tap coefficients to the feedforward and feedback equalizers.
Patent CA-2056242-A1 (CA)
Title: Method for stabilizing acidic aqueous hydrogen peroxide solution containing copper
Inventor: ITANI KATSUTOSHI
IPC: C01B15/037
Filed: 1991-11-26
Abstract: Abstract An acidic aqueous hydrogen peroxide solution contain-ing copper can be stabilized by adding an amino acid having the formula   wherein Ar is an aromatic group.
Patent CA-2056361-A1 (CA)
Inventor: ZIMMERMAN HAROLD
IPC: C08L95/00
Filed: 1991-03-14
Abstract: A roofing system incorporates a fire resistant asphalt composition comprising a thermoplastic elastomer modified bitumen, a filler, a brominated diphenyl ether, antimony oxide, and zinc borate.  The apshalt composition is utilized with and impregnated into at least one layer of fiberglass or polyester mat. Preferably at least two layers are utilized wherein an upper layer is a fiberglass mat and a lower layer is a polyester mat, both mat layers being impregnated with the composition. In its preferred formulation, the asphalt composition comprises, in weight percent, about 30 % to 90 % bitumen, about 4 % to 16 % styrene-butadiene-styrene copolymer, about 10 % to 40 % filler, and up to about 20 % each of the brominated diphenyl ether, the antimony oxide, and the zinc borate. The preferred brominated diphenyl ether is decabromodiphenyl ether.
Patent CA-2058252-A1 (CA)
Title: Synergistic product selection test for biocides
Inventor: ROBERTSON LINDA R
IPC: C12Q1/18
Filed: 1991-12-20
Abstract: ABSTRACT     The product selection test is developed for rapid determination of the presence of synergistic blends of the biocide or the presence of biocide blends in contaminated waters.  The method uses an reduction oxidation dye system, supplied nutrients, admixtures of one or more biocides or blends thereof and incubation times and temperatures providing for a variation of color changes of the dye system.    Industrial  waters  such  as  pulp  and  paper  waters contaminated with microbes can be tested by this rapid method of determining the presence of synergistic blends of anti-microbial agents.   .
Patent CA-2059415-A1 (CA)
Title: Wind leading system for snowmobile
Inventor: INAGAWA HIROYUKI
IPC: B60K11/08
Filed: 1992-01-15
Abstract: A snowmobile having an improved cooling arrangement including a front mounted radiator and a ducting system for ducting cooling air through the radiator and away from the windshield and rider's hands on the handlebars of the snowmobile.
Patent CA-2060183-A1 (CA)
Title: Self-supporting thin-film filament detector, process for its manufacture and its applications to gas detection and gas chromatography
Inventor: ACCORSI ANTOINETTE
IPC: H03D3/00
Filed: 1990-08-10
Abstract: ABSTRACT OF THE DISCLOSURE A filament type sensor for determining a static or dynamic  characteristic  of  a  surrounding  environment comprises a resistive element adapted to be heated in the environment by the passage of an electric current.   An interface area is adapted to react with the environment in a physico-chemical process influencing an electronic characteristic of  the  interface  area  according to the characteristic to be determined.  The sensor comprises a supporting wafer through which there is formed at least one  hole  and  at  least  one  filament  including  the resistive element.   The filament comprises one or more thin films and has a central portion situated in the hole and  at  least  two  end  portions  by which  the  central portion is connected to the supporting wafer.
Patent CA-2060581-A1 (CA)
Title: Device for cleaning footwear
Inventor: ANDERSON JAMES
IPC: A47L23/02
Filed: 1992-02-03
Abstract: ABSTRACT OF THE DISCLOSURE    The device has a housing for  receipt of footwear to be cleaned. Within the housing is a grate upon which the sole of the footwear rests. A lower spray pipe is disposed beneath the grate and has a number of orifices arranged to direct  liquid under pressure upwardly through the grate and onto   the underside of the sole. An upper annular spray pipe is disposed above the grate and encircles the upper area of  the footwear.         The upper spray pipe has a number of  orifices arranged to direct liquid under pressure against the upper area. There is a drain from which liquid may discharge  from the housing.
Patent CA-2061213-A1 (CA)
Title: Process for the preparation of light-coloured alkyl polyglycosides
Inventor: RIPKE NORBERT
IPC: C07H15/04
Filed: 1992-02-14
Abstract: ABSTRACT            A process for the preparation of an alkyl polygly-coside containing an alkyl group of 8 to 24 carbon atoms is disclosed.  The process comprises the step of glycosylation of a saccharide with a short-chain alcohol having 1 to 6 carbon atoms, in the presence of an acid catalyst, followed by the step of transglycosylation of the product so obtained with a long-chain alcohol having 8 to 24 carbon atoms.  According to the invention, the glycosylation is carried out in an evaporator, at an average acid number of from about 1 to about 10 mg of KOH per gram of the reaction mixture and at a temperature of the reaction mixture of from about 60°C to about 160°C.  The separation of water during the glycosylation reduces the thermal stress and damages to the product due to acid hydrolysis, resulting in alkyl poly-glycosides of improved colour.
Patent CA-2062648-A1 (CA)
Title: Apparatus for plotting, cutting and/or punching sheet material
Inventor: VERDONCK GERARD J
IPC: B26D7/26
Filed: 1992-03-11
Abstract: ABSTRACT OF THE DISCLOSURE       An apparatus for plotting, cutting and/or punch-ing the contour of figures on and into a sheet material, includes a feed for moving the sheet material in accor-dance with a first component of a plotting, cutting or punching direction. A tool head is movable in a direction perpendicular to the direction of the feed and parallel to the surface to be cut in accordance with a second com-ponent of the plotting, cutting or punching direction.          The tool head has a housing moveable in a direction per-pendicular to the surface of the sheet material. A servo-controlled motor controls the position of a bush rotatab-ly arranged in the housing, and is provided with either a plotting, cutting or punching tool. The housing is moved toward the sheet material to be plotted, cut or punched and the cutting or punching tool is positioned such that the cutting or punching direction coincides with the tangent of the contour to be cut. Two rollers are ar-ranged at the side of the bush facing the sheet material and slightly extend therefrom to roll over the sheet material during cutting and punching operations. The cut-ting or punching tool is arranged between the rollers with its cutting direction being the same as the rolling direction of the rollers and extending therefrom a dis-tance corresponding to the desired cutting or punching depth. The tool tip is located on the axis of rotation of the bush.
Patent CA-2063400-A1 (CA)
Inventor: BAKER ROHAN T
IPC: C12N9/00
Filed: 1990-06-27
Abstract: The invention described herein encompasses a method of influencing the metabolic stability of an intracellular protein in vivo (in intact cells and whole animals) along with compositions for affecting such regulation. The method comprises administering a regulator having an amino-terminal amino acid residue which is the same as or similar to the amino-terminal residue of the intracellular protein or group of proteins. If desired, this amino-terminal residue is chosen to be a member of the destabilizing class of amino-terminal residues, according to the N-end rule of protein degradation. The compositions of the present invention can comprise a DNA construct encoding a protein and a DNA construct encoding a regulator having the same or similar amino-terminal residue as the protein. The compositions can also comprise the regulator, having an amino-terminal residue which is the same as or similar to the amino-terminal residue of the protein and, as desired, is a member of the destabilizing class of amino-terminal residues, according to the N-end rule of protein degradation. The methods and compositions of this invention may be used for treating diseases resulting from an abnormal breakdown of a desired protein or group of proteins, and for enhancing in vivo production of a desired protein or group of proteins in biotechnological applications.
Patent CA-2064840-A1 (CA)
Title: Electron spin resonance spectrometers
Inventor: PETHIG RONALD
IPC: G01R33/389
Filed: 1990-08-17
Abstract: Electron spin resonance spectrometers comprise a sample cavity located between the poles of a permanent magnet, means for applying microwave energy to the cavity, means for measuring the frequency of the microwave energy applied to the cavity, means for controlling the magnetic field strength in the cavity, means for detecting changes in cavity Q and accordingly changes in the level of microwave power reflected back from the cavity, and means for analysing the changes in reflected power. In accordance with one aspect, a nuclear magnetic resonance probe including a standard sample is placed adjacent the sample cavity, means are provided for measuring the nuclear magnetic resonance frequency in the standard sample, calculating the magnetic field to which the sample and the adjacent cavity are subjected therefrom and applying the results of the calculation to control the magnetic field strength in the cavity. In another aspect the spectrometer includes control means for controlling the operation of the spectrometer by stabilising the precisely defined relationship between magnetic field strength and microwave frequency at resonance in accordance with a fixed or swept demand g-value relating to the test sample.
Patent CA-2066606-A1 (CA)
Title: Container for dispensing preservative-free preparations
Inventor: CLEMENTS DONALD A
IPC: B67D7/76
Filed: 1991-07-11
Abstract: A multiple use container (10, 150) for dispensing fluids, such as fluids used in eye care, particularly preservative free preparations in variable doses, includes a squeezable container (12, 152) for holding the fluid. A dispenser assembly (14, 166) associated with an exit opening (24, 158) from the container (12, 152) includes a hollow dispensing tip (26, 168) which encloses a fluid valve (46, 178/180). A resilient biasing means (80, 180, 116, 122, 140, 252) holds a piston head (82, 118, 124, 142, 192, 232) in a normally sealed or closed position. A second opening (40, 204/208, 108) in communication with the interior of the bottle (12, 152) is covered by a hydrophobic filter (90, 206/182) having a pore size that prevents microbial contaminants from entering the container (12, 152) but prohibits fluid from leaving the container. The bottle (12, 152) is squeezed to open the valve (44, 178/180) to dispense fluid from the bottle (12, 152). Upon release of that manual pressure, the fluid valve (46, 178/180) closes and air passes through the filter (90, 206/182) to replace the dispensed fluid.  The air entering the container (12, 152) is sterilized by the filter (90, 206/182).
Patent CA-2066640-A1 (CA)
Title: Heterocyclic compounds
Inventor: WARD TERENCE J
IPC: A61K31/47
Filed: 1990-10-10
Abstract: Compounds of formula   <IMAGE>   wherein R1 is hydrogen or one or more specified substituents, X is -O- or -NR2- where R2 is lower alkyl, lower alkenyl, lower alkynyl, aryl or specified substituted lower alkyl or R2 represents a group -Z- which is connected to the 8-position of the aromatic ring so as to form a heterocyclic ring of 5 to 7 ring members, Y is O or NR3 where R3 is hydrogen or lower alkyl, and B is a saturated azabicyclic ring (e.g. tropanyl or quinuclidinyl) or a N-oxide thereof and their acid addition salts are 5-HT3 antagonists which may be used in, for example, the treatment of neuro-psychiatric disorders.
Patent CA-2071188-A1 (CA)
Inventor: BRYSON JAMES H
IPC: B32B15/08
Filed: 1992-06-12
Abstract: A procedure for improving the adherence, in the presence of moisture, of (a) a top coat of paint or polymer to (b) a metal substrate coated with another metal.  The metal substrate is coated with a composite coating of particles of oxide dispersed in the coating metal.  The surface energy of the composite coating is controlled.  The article comprising the metal substrate plus composite coating need not be subjected to any phosphating and chromate sealing treatments before application of the top coat.
Patent CA-2075467-A1 (CA)
Title: System and method for introducing meter sensor hysteresis
Inventor: SWANSON SCOTT C
IPC: G01R21/133
Filed: 1992-08-06
Abstract: A method and system is disclosed for accurate remote reading of an electricity meter. An optical detection arrangement, including a light emitter and sensor, have positioned in the light path therebetween a cutout portion of the meter shaft. Rotation of the shaft affects the amount of light passed to the sensor.      Registration errors which may occur in a linear transition operating range are avoided by provision of detector threshold hysteresis. A microprocessor sets timing pulses for emitter energization, establishes a detection period of uniform length of time for each energizing pulse and produces, during each detection period, a digital signal having a logic level indicative of the presence or absence of light transmitted to said sensor, whereby a correlation between light transitions and power usage can be made.      Accuracy of detection is improved under microprocessor control by introducing hysteresis in the delay between emitter energization and detection, in the voltage threshold in a comparator connected to the detection circuit, or in emitter energization driving current.     The hysteresis is determined in accordance with the memorized state of the last previous detected signal.
Patent CA-2076450-A1 (CA)
Inventor: HERGENROTHER WILLIAM L
IPC: E04D5/06
Filed: 1992-08-20
Abstract: A haloalkoxylated polybutadiene polymer and a composition containing the polymer which is suitable for use in a flat sheet material such as a roofing membrane is disclosed.  The polymer has a superior filler capacity, excellent flame resistivity and acceptable heat aged tensile properties.  The composition, which includes at least one polymer of the present invention and from about 5 to about 160 parts by weight of a filler material per 100 parts polymer, is self-adhering without the use of an adhesive and is heat seamable to produce seams which are resistant to temperatures as high as 100°C.
Patent CA-2077411-A1 (CA)
Title: Polymer blends of cycloolefin polymers and polyacetals
Inventor: EPPLE ULRICH
IPC: C08L59/00
Filed: 1992-09-02
Abstract: Abstract of the disclosure                HOE 91/F 275K      Polymer blends of cycloolefin polymers and polyacetals Polymer blends are prepared from cycloolefin polymers or cycloolefin copolymers and polyacetals by kneading or extruding these together. The cycloolefin polymer prefer-ably comprises structural units which are derived from a monomer of the formula I                                             (I)
Patent CA-2079047-A1 (CA)
Title: Gas compressor having a variable-volume clearance pocket, and means for varying a clearance pocket in a gas compressor
Inventor: BENNITT ROBERT A
IPC: F04B3/00
Filed: 1992-09-24
Abstract: ABSTRACT           The  compressor  has  a  straight  cylinder wholly confined within which are inlet valves,  and reciprocatable discharge valves. One inlet valve is set in place by a centerbolt which can be turned by a wrench (or the like) to move the inlet valve to selected  positions  relative  to  its  confronting discharge valve, whereby the volume of the clearance pocket  is  varied.  The  centerbolt  mounted  inlet valve, then comprises an instrument for selectively varying the clearance pocket volume,  obviating any need  for  any  special  clearance  pocket  varying devices or components.
Patent CA-2081117-A1 (CA)
Title: Electromagnetic clutch with improved rotor
Inventor: CERNY ZDENEK
IPC: F16D27/112
Filed: 1991-04-23
Abstract: In a clutch (10) with a stationary electromagnet (46) to couple an ar-mature (56) to a rotor (12), the rotor has inner and outer cylindrical, portions (14, 24) connected at one end by an annular clutch portion (16) with inner and outer arcuate slots ( 18, 22) which extend through the clutch portion (16) from radial locations at the clutching surface (60) to closer radial locations on the other side of the portion (16). The portion (24) may have on its outer surface either a poly V groove (42), or a V groove (472), or gear teeth (166).
Patent CA-2083864-A1 (CA)
Title: A process for the production of 3-hydroxyalkanals
Inventor: HAAS THOMAS
IPC: B01J27/14
Filed: 1992-11-26
Abstract: The invention relates to a process for the production of 3-hydroxyalkanals, more particularly 3-hydroxypropion-aldehyde, by hydration of the corresponding 2-alkenals, more particularly acrolein, in the presence of a(olilcatalyst containing acidic functional groups. The use of catalysts based on an inorganic support containing basic activity centers, which are at least partly occupied by a polybasic acid, of which the first pK s value is between 0 and 3, in a form in which it cannot be removed by water, enables the hydration to be carried out with high selectivity. At the same time, the disadvantages of known organic fixed-bed catalysts are avoided. Preferred catalysts are based on titanium dioxide with phosphoric acid fixed thereon.