baber/WOPTO huggingface dataset:
Patent CA-2075387-C (CA)
Title: Low distortion laser system for am fiber optic communication
Inventor: GLAAB JOSEPH B
IPC: H04B10/54
Filed: 1992-08-06
Granted: 2003-04-08
Abstract: An information signal modulates a first optical carrier. The information signal is inverted to modulate a second optical carrier. The modulated first and second optical carriers are multiplexed into a single optical signal for communication over an optical fiber path. At a receiver, the optical signal is demultiplexed to recover the information signal and the inverted information signal. The recovered signals are combined to provide the information signal in the electrical domain with reduced distortion. A dual-detector balanced optical diode pair can be used to combine the recovered information and inverted information signals and provide an analog RF output. The apparatus is particularly suitable for the transmission of AM-VSB television signals.
Patent CA-2076453-C (CA)
Title: Cutter
Inventor: SAITO TATSUYA
IPC: B26B1/08
Filed: 1992-08-20
Granted: 1998-06-16
Abstract: A cutter includes a movable blade and a slider.  The movement of the slider causes the blade to move between an extended cutting position and a retracted storage position.  The slider includes one projection which frictional engages the blade for preventing its free rotation or movement during the cutting operation.
Patent CA-2077278-C (CA)
Title: Halftoning with enhanced dynamic range and edge enhanced error diffusion
Inventor: ESCHBACH REINER
IPC: H04N1/403
Filed: 1992-09-01
Granted: 1997-01-28
Abstract: Gray pixel values, where the value of the pixel has one of a relatively large number of input levels, are directed through an error diffusion quantization process, for the conversion to one of a relatively small number of values. Each pixel of the gray level data is modified by a correspondingly weighted error correction term or terms from previously processed pixels, generating a modified pixel value. This modified pixel value is compared to a threshold value, the threshold value determined adaptively, based on 1) a dither pattern, having a dynamic range greater than 1, and 2) the value of the pixel to be thresholded, and optionally on its predetermined neighborhood, multiplied by a value representing an edge enhancement factor. The difference value between the modified pixel value and the output pixel value is distributed in accordance with a weighted distribution scheme to a set of neighboring unprocessed pixels, increasing or decreasing the gray values of such pixels.
Patent CA-2079035-C (CA)
Title: Photographic copying apparatus and operating process
Inventor: FRICK BEAT
IPC: G03B27/32
Filed: 1992-09-24
Granted: 2002-05-28
Abstract: In a photographic copying apparatus for processing exposed photographic film there are recorded in a measuring station, in addition to measurement data relating to the colour composition of the negative, also splice events and perforation events and their occurrence on the film. The recorded data are fed to a calculating and evaluation unit and there stored in the form of a table (event table). The occurrence of splice events and perforation events on the film is recorded in one or more repositioning processing stations.  Those data are stored in the calculating and evaluation unit in the form of a table (position table). In order to reposition the film in each processing station, the tables are correlated and any deviations established are taken into account when the film is repositioned.  In order to detect the perforation and splice events, the measuring station (7) and the processing stations (8, 9) are equipped with perforation- and splice-detectors (72, 73 and 82, 83 and 92, 93, respectively).
Patent CA-2079919-C (CA)
Title: Two sided marker
Inventor: BENNETT REGINALD S
IPC: B64F1/18
Filed: 1992-10-06
Granted: 1999-01-26
Abstract: The marker has a pair of upwardly converging reflectant planar panels facing approximately in opposite directions.  In its correct attitude on a support surface the panels slope at 2°-6° to the vertical if the marker is intended for assisting the landing of fixed wing aircraft and at 8°-10°   to the vertical if the marker is intended for assisting the landing of helicopters.  The reflectant panels are preferably retroreflectant.
Patent CA-2083306-C (CA)
Title: Cutting method
Inventor: HUKUOKA NOBUO
IPC: A22C25/18
Filed: 1992-11-19
Granted: 1999-09-14
Abstract: A method for cutting a workpiece into cut piece or cuttings having a predetermined equal weight, which is disclosed herein, comprises the steps of performing a trial cutting of a workpiece along a predetermined trial cutting plane to provide a trial cut piece or cutting, measuring a weight of the trial cut piece, determining a weight per unit length of the trial cut piece on the basis of the weight and the position of the trial cutting plane of the trial cut piece, determinig the position of a first cutting plane for a first cut piece of a predetermined weight adjacent the trial cut piece by calculation based on the weight per unit length of the trial cut piece, performing a first cutting of the workpiece along the first cutting plane to actually provide the first cut piece adjacent the trial cut piece, and likewise determinig the position of an n-th cutting plane for an n-th cut piece by calculation based on the weight per unit length determinedon the basis of the weight and the position of the cutting plane of a jast last cut piece, i,e., an n-th cut piece, and performing an n-th cutting of the workpiece along the n-th cutting plane to actually provide the n-th cut piece. With this method, it is possible to cut a workpiece with an extremely good accuracy into cut piece or cutting each having a desired weight and high commercial value; and thus to effectively utilize the workpiece without any waste, leading to a reduced cost.
Patent CA-2084230-C (CA)
Title: Coating a substrate surface with a permeation barrier
Inventor: LOHWASSER WOLFGANG
IPC: C23C14/32
Filed: 1992-12-01
Granted: 1999-02-02
Abstract: A  substrate  surface  is  coated  with  a permeation  barrier  of  inorganic  material  which  is vaporised  from  a  crucible  in  a  vacuum  chamber evacuated to at least 10 -3 mbar and precipitated on the substrate surface;  an ionising electron beam of low energy is passed through the gas phase of inorganic material with formation of a plasma, preferably in the direction running approximately parallel to the substrate surface; at least one low voltage electron beam gun with assigned electrode is  incorporated in the vacuum chamber between the crucible and the substrate support;  the main application is for coating plastic films for the packaging industry.
Patent CA-2089171-C (CA)
Title: Improved lithium aluminum alloy system
Inventor: CHO ALEX
IPC: C22F1/00
Filed: 1991-08-27
Granted: 2002-12-17
Abstract: An aluminum based alloy useful in aircraft and airframe structures which has low density and consists essentially of the following general formula: Mg a Li b Zn c Ag d Al bal, wherein a ranges from 0.5 to 10 %, b ranges from 0.5 to 3.0 %, c ranges from 0.1 to 5.0 %, d ranges from 0.1 to 2.0 %, and bal indicates the balance of the alloy is aluminum, with the proviso that the total amount of alloying elements cannot exceed 12.0 %, with the further proviso that when a ranges from 7.0 to 10.0 %, b cannot exceed 2.5 % and c cannot exceed 2.0 %.
Patent CA-2092046-C (CA)
Title: Breathable fabric lamination, apparatus and methods
Inventor: JARRELL CURT
IPC: B32B7/14
Filed: 1993-03-19
Granted: 2004-04-13
Abstract: A breathable laminate comprises at least two porous webs laminated together with a porous adhesive matrix, preferably a random fibrous adhesive pattern having a coat weight of between 1.5 and 12 grams per square meter.      The two or more porous webs comprise woven or non-woven materials and the resulting breathable fabric or laminate has good hand and flexibility. Breathable fabric is adhered to foam by such random fibrous adhesive patterns of similar coat weights. Coating widths of up to 80 inches or more are produced in a slot die fed by a selected plurality of recessed lands within the die, with motors and pumps con-trolled to maintain consistent, uniform coat weights regard-less of coat widths and substrate speeds selected. Single ply coated webs, apparatus and methods are disclosed.
Patent CA-2093011-C (CA)
Title: Screen material for and method of screen printing
Inventor: NEWMAN DONALD E
IPC: B41F15/36
Filed: 1991-10-02
Granted: 2000-02-15
Abstract: The present invention relates to screen printing operation, and particularly a screen printing operation at a relatively high tension. The nominal thread diameter of the screen material as woven is contemplated to be essentially increased over that generally found in the prior art while substantially maintaining the standard mesh count arrangements as woven. The combination of high tension and increased thread diameter while maintaining the thread count results in a substantial improvement to the printed product and printing operation.
Patent CA-2094757-C (CA)
Title: Apparatus for applying fixing elements, with plunger, plunger return catch and pivoting plug guide
Inventor: ALMERAS ROLAND
IPC: B25C1/18
Filed: 1993-04-23
Granted: 1996-12-31
Abstract: The apparatus comprises a barrel (1), a plunger (4) movable in the barrel for driving a fixing element (6), a plunger return catch (29), an element guide (21) mounted pivotably at the front of the barrel in order to load an element (6) therein from the rear to the front.  The guide (21) is movable in axial translation relative to the barrel (1) and can move back into the firing position towards the barrel  (1)  and cover the front end of the shaped  (13) plunger (4),  in order then to cover the head (14)  of a fixing element (6)  previously introduced into the guide (21).      The apparatus of the invention is well adapted to the application of plugs in steel or concrete materials.
Patent CA-2097686-C (CA)
Inventor: MORIGI ADRIANO
IPC: A61M5/32
Filed: 1993-06-03
Granted: 1998-12-22
Abstract: A medical device includes a barrel with proximal and distal ends. A needle extends from the distal end of the barrel and terminates in a point.  A shield is coaxially  and  rotationally  mounted  on  the  barrel. This  shield  is  axially movable between  a  retracted position in which the needle point is exposed and an extended  position  in  which  the  needle  point  is covered.   The   device   includes   locking   elements associated  with  the  barrel  and  the  shield.   These locking  elements   are   responsive  to   a  combined rotational and axially distal movement of the shield, when  the  shield  is  at an  extended  and  unlocked position, for locking the shield on the barrel at the extended  position.   These  locking  elements  prevent subsequent rotational and axial movement of the shield on the barrel.
Patent CA-2102822-C (CA)
Inventor: PASCOE ROBERT DENNIS
IPC: B61L21/10
Filed: 1993-11-10
Granted: 1996-12-24
Abstract: A virtual block system is provided in which a section of track is represented by a zone having a plurality of virtual track circuits.  Communication between wayside and the vehicle is established within the zone, and may be used to provide the initial position of the vehicle to the carborne equipment. The carborne equipment can then calculate and up-date its position within the zone by using its initial position and sensor information relative to its movement within the zone.          The actual position within the zone can be transmitted from the vehicle to the wayside equipment.  The wayside equipment converts the actual position within the zone to a virtual track circuit occupancy.  The wayside equipment may also use the train length to calculate one or more virtual blocks as being occupied.  The wayside unit outputs the occupancy status, occupied or unoccupied, to the wayside interlocking equipment.  The wayside equipment generates profile data which can be transmitted to the vehicle.
Patent CA-2106031-C (CA)
Inventor: CRESS DAVID R
IPC: E05F1/12
Filed: 1993-09-13
Granted: 1996-02-13
Abstract: A concealed self-closing hinge for mounting a door on a frame.  The door member of the hinge includes a cup formed with vertically aligned slots.  The frame member of the hinge includes an arm whose free end is formed with integral pintles which are pivotally received in the slots.  A plastic cam is adapted to be slipped onto the free end portion of the arm between the pintles and coacts with a leaf spring to hold the pintles in assem-bled relation with the slots and also to effect self-closing of the door.
Patent CA-2107550-C (CA)
Title: Gelling compositions useful for oil field applications
Inventor: MORADI-ARAGHI AHMAD
IPC: C09K8/88
Filed: 1993-10-01
Granted: 1998-06-30
Abstract: A gelling composition and a process for wellbore treatment comprising injecting the composition into reservoirs are disclosed wherein the composition comprise a produced brine; A water-soluble polymer such as, for example, polyacrylamide; a crosslinker such as, for example, a complexed zirconium compound; and optionally a complexing ligand such as, for example, lactic acid.
Patent CA-2112667-C (CA)
Title: Monoclonal antibodies to putative hcv ns5 proteins and methods for using same
Inventor: MEHTA SMRITI U
IPC: C07K19/00
Filed: 1992-08-21
Granted: 2004-02-17
Abstract: Monoclonal antibodies which specifically bind to Hepatitis C Virus (HCV) NS5 antigen. Also provided are hybridoma cell lines which secrete these monoclonal antibodies, methods for using these monoclonal antibodies, and assay kits which contain these monoclonal antibodies.
Patent CA-2113098-C (CA)
Title: Yeast-leavened refrigerated dough products
Inventor: DOMINGUES DAVID J
IPC: C12N1/18
Filed: 1992-07-14
Granted: 2003-12-23
Abstract: The present invention provides refrigeratable yeast-leavened dough compositions and methods of making such doughs. In a first embodiment, a dough composition of the invention is made by rehydrating dried yeast at chilled temperatures, which causes selective lysing (a loss in the selectivity of the yeast plasma membrane). Such a dough composition exhibits a cold sensitiv-ity in that the yeast is capable of leavening the dough at elevated temperatures, but becomes inactive at refrigeration temperatures. In another embodiment, the dough composition and the strain of yeast used therein are chosen to limit the total leavening action of the yeast by controlling the amount of substrate in the dough fermentable by the yeast. In a third embodiment, a dough com-prises a mixture of flour, water and a mutant yeast which is low temperature sensitive. Such an "Its" yeast is active at elevated temperatures, but becomes substantially inactive at refrigeration temperatures. Dough compositions made in accordance with any of these embodiments of the invention are capable of being leavened at elevated temperatures, yet stored in a sealed container at refrigeration temperatures for extended periods of time.
Patent CA-2131110-C (CA)
Title: Gate valve sleeve
Inventor: MCCUTCHEON ANDREW J
IPC: F16K3/02
Filed: 1994-08-30
Granted: 2004-07-20
Abstract: A gate valve sealing unit includes first and second annular seal members that are attached to a main body structure within a passageway that receives and is selectively occluded by a gate. The first and second seal members include first and second rigid mounting hubs to which are mounted first and second annular elastomer sleeves, respectively. Each elastomer sleeve has a continuous lip section and plural axially spaced cavities, the lip sections of the first and second sleeves engaging peripheral margins on opposite sides of the gate when it occludes the passageway and engaging each other otherwise.      The first and second mounting hubs include axially outward radial flanges that extend from the respective first and second sides of the main body structure.
Patent CA-2132805-C (CA)
Inventor: ROSSI JEAN
IPC: A23K20/111
Filed: 1994-09-23
Granted: 2004-09-21
Abstract: This invention pertains to a composition of additives for animal feed which includes a solution of volatile and/or irritating products in a liquid coagulating agent which is absorbed on a vegetable and/or mineral carrier in particles.      This carrier is, at least partially, coated with coagulated protein particles bound to this same carrier in order to diminish the free contact area of the carrier. The additive composition can be advantageously blended with premixes or with animal feed.
Patent CA-2135752-C (CA)
Title: Use of (e)-2-(p-fluorophenethyl)-3-fluoroallylamine in the treatment of alzheimer's disease
Inventor: MCDONALD IAN A
IPC: A61K31/135
Filed: 1993-04-14
Granted: 1998-07-14
Abstract: The present invention relates to a method of treatment for Alzheimer's disease in a patient in need thereof comprising administering to said patient a therapeutically effective amount of (E)-2-(p-fluorophenethyl)-3-fluoroallylamine or a pharmaceutically acceptable salt thereof.
Patent CA-2140220-C (CA)
Inventor: OSTROFF GARY R
IPC: A61P29/00
Filed: 1995-01-13
Granted: 2008-12-02
Abstract: Methods of treating or preventing infection-induced oral tissue destruction or gingivitis in a mammal, comprising administering a therapeutically effective amount of .beta.(1,3)-glucan, such as poly-.beta.(1-6)- glucotriosyl-.beta.(1-3)-glucopyranose glucan (PGG-glucan), are disclosed.
Patent CA-2141224-C (CA)
Title: System and method for identifying an arrival time of a communicated signal
Inventor: FOX THOMAS MICHAEL
IPC: G01S1/04
Filed: 1995-01-27
Granted: 2005-08-02
Abstract: A transmitter (12) broadcasts a PN encoded message (16).      A receiver (14) includes a SAW correlator (38) configured to autocorrelate with the PN sequence used in the broadcast signal.      A preamble of the message (16) conveys two successive bits (18) that are each encoded with the PN sequence. After the correlator (38) has been preloaded with the PN sequence from the first bit (18), its non-correlation output exhibits reduced amplitude time sidelobes. A timing comparison circuit (60) compares a correlation signal (46) with a timing threshold (72). The timing threshold (72) is established at a very low level to minimize the influence of multipath. False triggering on noise is prevented by disabling the timing comparison circuit (60) until after the first bit {18). At this point in time the correlator (38) has been preloaded with its PN sequence, is again being loaded with its PN sequence, and outputs reduced amplitude time sidelobes.
Patent CA-2142625-C (CA)
Title: Oil and gas well operation fluid used for the solvation of waxes and asphaltenes, and method of use thereof
Inventor: THORSSEN DONALD A
IPC: C09K8/524
Filed: 1995-02-14
Granted: 2006-04-25
Abstract: A wax and asphaltene solvation fluid for use in oil and gas wells is derived as a residual fluid from a feedstock that includes a greater mass percentage of trimethylbenzene than decane, and is preferably sour. Fluids from the Hanlan field located at Township 47, Range 17, W5, Alberta, Canada, and from the Caroline field located at Township 35, Range 7, W5, Alberta, Canada, are applied to a well to remove wax and asphaltene deposits from the well.
Patent CA-2147610-C (CA)
Title: System for measuring the distance between two parallel boreholes or wells
Inventor: KUCKES ARTHUR F
IPC: G01V3/26
Filed: 1993-11-04
Granted: 2000-01-04
Abstract: The distance from a borehole (24) to a nearby target well (14) is determined by positioning a magnetic sensor (40) in the borehole (24) at a known depth and providing a magnetic source (50) in the target well (14) and by moving the source (50) to depths above and below the depth of the sensor (40) and detecting maximum field vectors. The distance the source (50) moves between the maxima is the distance between the wells. In another embodiment, the ratio of source magnetic field vectors is used to determine the ratio of the difference in depth z between the source (50) and the sensor (40) to the lateral distance r between the wells. This ratio z/r is then used to determine the separation of the wells.
Patent CA-2148197-C (CA)
Inventor: JELINSKI GLENN D
IPC: E21B33/129
Filed: 1995-04-28
Granted: 1998-12-01
Abstract: A retrievable production packer is conditioned for initial wireline installation in a well utilizing an adapter comprising an outer sleeve and an inner rod connected to a mandrel carrying the slip assembly of the packer.  The packer is frangibly supported in an initial transport condition for being set by means of a wireline setting device.  A flow control device, such as a blanking plug, may be seated in the packer mandrel at the very top of the packer while being lowered into position and set with a wireline setting device.  Thereafter, the tubing string may be connected to the packer downhole to release the packer and retrieve it from the well.
Patent CA-2150440-C (CA)
Inventor: UGLENE WENDELL VAUGHN
IPC: B63C11/04
Filed: 1995-05-26
Granted: 2005-04-12
Abstract: An encircling sealable closure such as a neck band or collar made of a band of compressible material interposed between a three layer inflatable band at the neck of the user provides a neck seal by inflation of the inflatable band positioned between the compressible material and a substantially non-extendable outer wall. Inflation of the inflatable band deforms the compressible material to conform with and surround the neck of the wearer preventing the ingress of water past the neck seal so formed.
Patent CA-2151561-C (CA)
Inventor: CERRI ALBERTO
IPC: A61P9/12
Filed: 1995-06-12
Granted: 2006-01-24
Abstract: Hydrazino and hydroxyamino-1413-hydroxyandrostane derivatives having general formula (I):   (see formula I) wherein the symbole ~ means .alpha. or .beta. configuration and A, B, R1, R2, R3 and R4 have the manings given in the description; a process for producing same and their use for the preparation of a medicament for the treatment of cardiovascular disorder such as heart failure and hypertension are disclosed.
Patent CA-2159055-C (CA)
Title: Compositions containing polyanionic polysaccharides and hydrophobic bioabsorbable polymers
Inventor: BURNS JAMES W
IPC: A61L27/38
Filed: 1995-09-25
Granted: 2008-03-11
Abstract: Biocompatible compositions comprising polyanionic polysaccharides combined with hydrophobic bioabsorbable polymers as well as methods for making and using the compositions are described.
Patent CA-2159504-C (CA)
Title: Emission control device and method
Inventor: MASTERS BEN F
IPC: F01N3/18
Filed: 1994-03-25
Granted: 2004-12-14
Abstract: An emission control device and method are provided for treating exhaust gases to reduce gaseous pollutants contained therein. The device includes a treatment chamber (12) through which the exhaust gases pass.  First and second metal screens (18, 20) are disposed within the chamber a predetermined distance from each other. A section of chemical substrate (19) is disposed between the screens. Voltage is supplied to adjacent the first screen (18) with, for example, an electrode device (24). A timing circuit (38) is provided for pulsing the voltage at a predetermined pulse rate. A temperature sensitive device (42) may be interfaced with the treatment chamber (12) and timing circuit (38) so that the pulsed voltage is only supplied to the screen (18) within a predetermined temperature range.