baber/WOPTO huggingface dataset:
Patent CA-2055072-A1 (CA)
Inventor: JOHNSTON JAMES D
IPC: H04N19/94
Filed: 1991-11-06
Abstract: In a differential PCM encoder, the problem of error perpetuation is solved by leaking a changing, rather than a fixed, fraction of the input signal to the differential PCM. The fraction leaked is sensitive to the characteristics of the signal. In one embodiment the fraction leaked is fixed for a frame in accordance with a chosen characteristic of the frame signal. In another embodiment, the fraction leaked is set in accordance with one function when a chosen characteristic of the frame signal exceeds a given level, and follows another function when the chosencharacteristic does not exceed the chosen level. In a still another embodiment, the fraction leaked is set to one of two levels, based on a chosen characteristic of the frame signal.
Patent CA-2056801-A1 (CA)
Title: Semiconductor device of band-to-band tunneling type
Inventor: TADA YOSHIHIDE
IPC: H01L29/739
Filed: 1991-11-28
Abstract: SEMICONDUCTOR DEVICE OF BAND-TO-BAND TUNNELING TYPE                Abstract of the Disclosure A semiconductor device of band-to-band tunneling type including a silicon substrate, a first gate electrode formed by a highly doped surface region of the silicon substrate, a first silicon oxide film formed on a surface of the surface region, a silicon thin film formed on the first silicon oxide film, a second silicon oxide film formed on a surface of the thin silicon film, and a second gate electrode formed by a metal film applied on a surface of the second silicon oxide film.          In the thin silicon film, there are formed P and N type regions side by side to constitute a PN junction.  When a gate bias voltage is applied across the first and second gate electrodes, a band bend having a large height and inclination in a direction perpendicular to the thin silicon film is produced in the depletion region in the vicinity of the PN junction.  Minority carriers brought up from the valence band into the conduction band by tunneling due to the band bend are conducted through the PN junction under the influence of a reverse bias voltage applied across the PN junction.   The band bend can be made large at will by increasing the gate bias voltage, so that it is possible to obtain a large tunneling current.
Patent CA-2062106-A1 (CA)
Title: Object sensing system for bar code laser scanners
Inventor: MARWIN GREGG
IPC: H04N1/113
Filed: 1992-02-28
Abstract: In a bar code laser scanning system operable in a continuous scan mode and a sleep mode, an object sensing circuit for automatically switching said laser scanning system from the sleep mode to the scan mode is provided to help extend the operational lifetimes of the system compo-nents such as the laser diode and the scanning motors.      When in the sleep mode, pulsed light is received and pro-cessed to generate a steady state voltage signal. Derived from the steady state voltage signal is a positive thresh-old voltage signal and a negative thaveshold voltage signal each having a magnitude respectively greater than and less than that of the steady state voltage level. The steady state, positive threshold and negative threshold voltage signals are input to a comparator means which detects when an object is placed in the scanning field of the laser scanning system. Object detection occurs when the steady state voltage increases above the positive threshold voltage signal or decreases below the negative threshold voltage signal depending upon the object's reflectivity.      When an abject is detected, a trigger signal is provided to direct the laser system to switch back into the scan mode without interrupting the normal scanning process.
Patent CA-2062989-A1 (CA)
Title: Process for producing and organic carbonate
Inventor: KEZUKA HIROAKI
IPC: C07C68/00
Filed: 1992-03-13
Abstract: ABSTRACT OF THE DISCLOSURE A process for producing an organic carbonate which comprises reacting an organic hydroxy compound, carbon  monoxide and oxygen in the presence of a catalyst comprising(a) palladium or a palladium compound, (b) a cuprous or cupric compound such as cupric acetate, (c) a quinone or an aromatic diol formed by reduction of the quinone or a mixture thereof such as hydroquinone, and (d) a halogenated onium compound such as (C4H9)4NBr is disclosed.      According to the invention, an organic carbonate such as diphenyl carbonate can be produced efficiently and economically.
Patent CA-2064637-A1 (CA)
Title: Method and catheter for controlled intravascular drug delivery
Inventor: GIFFORD HANSON S
IPC: A61B8/06
Filed: 1992-04-01
Abstract: METHOD AND CATHETER FOR CONTROLLED     INTRAVASCULAR DRUG DELIVERY  ABSTRACT OF THE DISCLOSURE A vascular perfusion catheter includes a catheter body having a macroporous matrix forming at least a portion of its distal end. Blood flow is measured in situ by a Doppler mechanism operably coupled to the catheter body.  A solution carrying a desired therapeutic agent may be introduced through the catheter and released through the macroporous matrix until a preselected blood flow is observed.     C:\WORK\PAT\14206-5.JMH
Patent CA-2065098-A1 (CA)
Title: Parking system
Inventor: REIMER ALFRED
IPC: E04H6/00
Filed: 1992-04-03
Abstract: A B S T R A C T     Parking garage hoist translates on a central 'main' aisle driven by hydraulic translation motor and raises hoist car driven by hydraulic translation motor.  Both motors are mounted near the base of the hoist and power for the hydraulic motors is derived from overhead electrical rails and power pick-up with the picked up power converted to hydraulic power.  A transverse aisle may be provided to house a hoist for maintenance while another hoist travels on the main aisle.  An extension aisle may be provided to house a hoist while another hoist travels on the main aisle.
Patent CA-2066624-A1 (CA)
Inventor: OSTER DORAN M
IPC: H04R3/02
Filed: 1991-06-12
Abstract: Audio signals are digitized (60) and an FFT (62, 240) is conducted on samples of the digitized signals to produce corresponding frequency spectrums. These spectrums are analyzed, such as by determining one or more peak frequency magnitudes (242) which are 33 dB greater than harmonics or subharmonics of the frequency in a plurality of several successive spectrums, to detect resonating feedback frequencies. The offending frequency is then filtered (316, 413) in the time domain, either in the digitized form or analog form, to eliminate the feedback.
Patent CA-2066988-A1 (CA)
Title: Preparation of an emulsifier-free polymer dispersion
Inventor: BANKOWSKY HEINZ-HILMAR
IPC: C08F2/22
Filed: 1992-04-24
Abstract: - 25 -          O.Z. 0050/42377 Abstract of the Disclosure:  An emulsifier-free polymer dispersion is prepared by polymerization of ethylenically unsaturated monomers (A), which can be subjected to free radical polymerization, with the aid of a free radical initiator in aqueous medium which contains a polymer (B), by a process in which the monomers (A) are metered into the aqueous medium during polymerization.   Dispersions prepared in this manner are used as an aqueous coating material and as an aqueous paper lacquer.
Patent CA-2068029-A1 (CA)
Inventor: CAMPOLMI PAOLO
IPC: B01F23/10
Filed: 1992-05-05
Abstract: An air mixer having a rotor with upper and lower horizontally oriented blades which draws air from above and below into the interior of the rotor so that thorough mixing occurs, after which the mixed air is expelled laterally by vertically oriented blades into the surrounding area and minimizes thermal stratification and other such conditions in the surrounding area.
Patent CA-2068116-A1 (CA)
Title: Stabilized hot melt adhesive systems
Inventor: HORSEY DOUGLAS W
IPC: C09J131/04
Filed: 1992-05-07
Abstract: STABILIZED HOT MELT ADHESIVE SYSTEMS                            Abstract of the Disclosure Hot melt adhesive compositions stabilized against thermal degradation, discoloration, skin formation and substantial viscosity changes, said adhesives being based on ethylene-vinyl acetate copolymer and a hydrocarbon tackifying resin and containing a stabilizer system of a hindered phenol antioxidant, a phosphite costabilizer and an acid scavenger.
Patent CA-2069776-A1 (CA)
Inventor: L ECUYER JEAN
IPC: H01P1/208
Filed: 1992-05-28
Abstract: A temperature stable bandpass folded filter for microwave radio communication, made from standard waveguide sections.  Two waveguide sections are divided into cavities using metal plates made from a temperature stable material, to construct the filter.  The sections are connected juxtaposed and the cavities of each section are coupled through  holes in the coupled broadwalls of the section.  Low insertion loss and very good temperature stability is obtained with the use of copper clad INVAR waveguide material.  The method of constructing the temperature stable folded waveguide filter of reduced length is also disclosed.
Patent CA-2070096-A1 (CA)
Title: Apparatus for the manufacture of a press jacket
Inventor: SCHIEL CHRISTIAN
IPC: D21F3/00
Filed: 1992-05-29
Abstract: Apparatus for manufacturing a press jacket from pourable elastomeric material with reinforcement threads.      A cylindrical pouring body. A longitudinal thread tensioning device at the pouring body. A feed device for feeding circumferential threads to the pouring body. A pouring nozzle for pouring the elastomeric material to the pouring body. A spacing device maintains a constant distance between the longitudinal threads and the jacket surface of the pouring body as well as a constant circumferential distance between adjacent longitudinal threads. The spacing device comprises a plurality of segments. Each segment has an L-shaped cross section.      The radial arm has slots for the passage of longitudinal threads and furthermore teeth present between the slots.      A slide is rigidly fastened to the support and includes rollers which engage the segments and move the spacing device along the pouring body.
Patent CA-2074904-A1 (CA)
Inventor: JANKOWSKI MARK D
IPC: B60B33/04
Filed: 1992-07-29
Abstract: ABSTRACT OF THE DISCLOSURE    A baby walker includes a seat supported by a tray for surrounding a child in a standing position, and permitting the walker to move with the child as he walks, and for supporting a child in a seated position, a friction pad on the walker for selectively engaging the surface upon which the walker is supported for selectively inhibiting movement of the walker, a plurality of supporting wheels on the walker for supporting the walker for rolling translation on the supporting surface, and an adjustable suspension coupled between the walker and one or more of the supporting wheels for selectively actuating one of three modes of operation, namely a first mode in which the friction pad engages the surface substantially continuously for inhibiting movement of the walker, a second mode in which the walker is movably supported on the wheels when the child is standing and is supported on the friction pad means for inhibiting translation when the child is seated, and a third mode in which the walker is continuously supported on the wheels for rolling translation over the surface.
Patent CA-2076589-A1 (CA)
Title: Naphthylethylureas and naphthylethylthioureas, the process for their preparation and pharmaceutical compositions holding same
Inventor: LESIEUR DANIEL
IPC: A61P25/28
Filed: 1992-08-21
Abstract: Compounds of formula (I): <IMAGE> for which the values of R, R1, R2 and X are defined in the description, which can be used as medicaments.
Patent CA-2076604-A1 (CA)
Inventor: BATES CARY L
IPC: G06Q10/10
Filed: 1992-08-21
Abstract: The invention provides for protecting floating blocks of  text  or  other  portions  of  a  shared  data  object  in collaborative  computer  based  system  from  simultaneous manipulation  originating  with  two  or  more  users.  The collaborative  computer  based  system  includes  a  network connecting a plurality of terminals for communication.  Each terminal includes an output display device and a user input device.   A shared data object simultaneously accessible by a plurality of users of the  system.   Responsive to a user obtaining access to the  shared data object,  the user is assigned  a  cursor  available  for  display  on  the  visual display  devices  of  all  current  users.   Responsive  to movement by a user of his or her cursor, an attempt is made to establish a lock region  in the shared data  object  by determining   position   coordinates.    If   the   position coordinates do not include any portion of any previously established lock region, a lock region associated with the user's  cursor may be  established.   Movement of  a cursor operates to release any prior lock region associated with the cursor if a new lock is established or if the cursor leaves the old lock.
Patent CA-2076895-A1 (CA)
Title: Stabilized telephony combiner
Inventor: PARIKH AJAY
IPC: H01P7/06
Filed: 1992-08-26
Abstract: ABSTRACT An autotuning combiner particularly for use in combining signals for radio telephony transmission. The combiner has a series of filter cavities each with an adjuster for fine-tuning the cavity to an input carrier signal. The combiner cavities are stabilized from positional drift in the absence of a carrier signal by means of a mechanical brake which holds the adjuster or a pilot signal generator which stimulates the absent carrier signal.
Patent CA-2080284-A1 (CA)
Title: Positive-acting photothermographic materials
Inventor: ELLIS RICHARD J
IPC: G03C8/40
Filed: 1992-10-09
Abstract: ABSTRACT         POSITIVE-ACTING PHOTOTHERMOGRAPHIC MATERIALS     Positive-acting photothermographic elements suitable in graphic arts and medical imaging comprising a photosensitive medium comprising a reducible silver source, a photo-acid generator, a binder and a reducing system for silver ion comprising a reducing agent for silver ion in which exposure of the element to actinic radiation causes the production of acidic species in the exposed regions which inhibit reduction of the silver source by the reducing system.
Patent CA-2081600-A1 (CA)
Inventor: KHOSHDEL EZAT
IPC: D06L3/02
Filed: 1992-10-28
Abstract: C7282 (R) ABSTRACT LIQUID CLEANING COMPOSITIONS            A substantially non-aqueous liquid cleaning composition comprises a non-aqueous liquid phase and dispersed solids which comprise an inorganic percarbonate bleach and a bleach precursor, wherein the precursor has a molar solubility in the liquid phase alone multiplied by the number of active groups of no more than 1.2 mmol per 100 ml at 25°C.
Patent CA-2084736-A1 (CA)
Title: Benzofuranes
Inventor: MEDERSKI WERNER
IPC: A61P9/08
Filed: 1992-12-07
Abstract: Abstract of the Disclosure Novel benzofurans of formula I:                                                   I   wherein R     is the radical   and R1 to R3 and -A-B-C-D- are as defined in Claim 1, and their salts, exhibit antagonistic properties towards angiotensin II and can be used for the treatment of hypertension, aldosteronism and cardiac insufficiency.
Patent CA-2085541-A1 (CA)
Title: Flame resistant, low pilling polyester fiber
Inventor: VIGNEAULT RICHARD E
IPC: C08G63/68
Filed: 1992-12-16
Abstract: Abstract of the Invention The invention is a polyester and a method for producing a poyester ]filament which has a combination of flame resistance and low pilling properties.  The method comprises forming a polyester polymer from a mixture of two polymers, the first compound being the reaction product of terephthalic acid or dimethyl terephthalate, ethylene glycol, and an oxysilicon compound and the second compound being the reaction product of terephthalic acid or dimethyl terephthalate, ethylene glycol and a phosphinic acid in the amount between 0.5 and 20 mole percent of the terephthalate acid and monomer.  In particular, the invention also comprises the enhanced fiber formed by the process, as well as the fabrics having a pilling of about 3 to less than 5 as measured in accordance with ASTM D-3512-82.
Patent CA-2087944-A1 (CA)
Inventor: BALKWILL DAVID
IPC: A61M5/31
Filed: 1993-01-22
Abstract: An injection device  medication delivery pen is  provided  for  injecting fluids  such as  insulin within body tissue.  The device includes a housing, a piston rod movably mounted within the housing, and a  dose  setting  mechanism  for  controlling  the movement of the piston rod with respect to a fluid containing  cartridge   removably  positioned  within the housing.  The piston rod includes a plunger and a   lead  screw  slidably  positioned  within  the plunger.  The plunger and lead screw are coupled by a pair of half nuts.  The half nuts may be uncoupled from the lead screw in order to allow it to slide freely with respect to the plunger.  A new cartridge may accordingly be installed quickly and easily as the  lead  screw  is  easily  displaced  by  a  new cartridge.
Patent CA-2088422-A1 (CA)
Title: Paperboard runners and paperboard pallets constructed therewith
Inventor: YOUELL DONALD R JR
IPC: B65D19/34
Filed: 1993-01-29
Abstract: PAPERBOARD RUNNERS AND PAPERBOARD PALLETS CONSTRUCTED THEREWITH                 ABSTRACT OF THE DISCLOSURE Broadly, she present invention is directed to paperboard runners and paperboard pallets constructed therewith. One aspect of the invention comprises a paperboard pallet comprising an upper deck and a lower deck having a plurality of runners interposed therebetween and affixed to each of said docks. Each of the runners comprises a sheet of paperboard that has been folded into a rectangular form having top and bottom walls, a pair of sidewalls, and a central vertical wall (e.g.,the two ends of the sheet pressed together) interposed between the sidewalls. The top wall has openings. The central wall has quarter-round cut-outs located at the longitudinal ends of the top wall cut-out areas. The top wall openings are adapted to receive flaps having central slots cut in them. The flaps are selected from: flaps formed from said runner top wall; flaps cut from an upper deck attached to said runner, or flaps formed from a rectangular insert which has a pair of end slotted flaps, which insert fits into said top wall opening with said end slotted flaps folding downwardly into said quarter-round cut-outs. Another aspect of the present invention comprises the runners described herein. A further aspect of the present invention is an alternate paperboard runner which comprises a sheet of paperboard that has been folded into a retangular form by one end being folded to form a first bottom wall, a first sidewall, a first top wall, and a second sidewall; and the other end being folded into an "S" configuration to form a central vertical wall, a part second top wall which lays against said first top wall, and a part second bottom wall which lays against said first bottom wall. The top wall has openings. The central vertical wall has quarter-round cut outs located at the longitudinal ends of said top wall cut-out areas. The top wall openings are adapted to receive flaps which have central slots cut in them. The flaps are selected from: flaps formed from said runner top wall; flaps cut from an upper deck attached to said runner, or flaps formed from a rectangular insert which has a pair of end slotted flaps which insert fits into said top wall opening with said end slotted flaps folding downwardly into said quarter round cut-outs. This paperboard pallet embodiment can be made collapsible for shipment and storage, yet it can be simple and quickly assembled into a strong, lightweight, disposable pallet.
Patent CA-2091331-A1 (CA)
Title: Laminated Fuel Cell Components
Inventor: ONG ESTELA T
IPC: H01M8/02
Filed: 1993-03-09
Abstract: An assembly of fuel cell components comprising a matrix tape having an active area and a peripheral wet seal area, an anode and/or a cathode in contact with a face of the matrix tape, the anode and cathode extending beyond a periphery of the active area of the matrix tape and contacting the peripheral wet seal area, and a portion of the peripheral wet seal area forming a frame around the anode and cathode to prevent gas crossover between the electrodes during cell operation and to prevent oxidation of the edges of the electrodes.
Patent CA-2091947-A1 (CA)
Title: Easy-open tear strip lid
Inventor: LANDIS H RICHARD
IPC: B65D43/02
Filed: 1993-03-18
Abstract: A reclosable plastic lid having a peripheral flange with a substantially annular projection that engages an annular shoulder on a container sidewall to retain the lid initially on the container full of contents. The flange is formed with a weakened portion defining a tear strip which removes to detach spaced portions of the flange along with portions of the annular projections leaving flange portions which are folded upwardly about hinge lines to retracted positions out of locking engagement with said annular shoulder. With the tear strip removed and the remaining flange portions pivoted outwardly toward horizontal positions, it is much easier to remove the lid from the container. When the lid is re-applied to reclose the container, the remaining attached, flange portions are pivoted down into engagement with container shoulder to retain the lid on the container and thereby, prevent spillage of the container's contents.
Patent CA-2092123-A1 (CA)
Title: Space rack
Inventor: THOMAS DAVID J
IPC: A47B77/16
Filed: 1993-03-22
Abstract: ABSTRACT      The 'SPACE RACK' was created to eliminate the need for spice racks as well as the jungle of different spices and small items lost in the dark recesses of cupboards.    The 'SPACE RACK' is a clear plastic spice bottle and small item holder that is attached to the inside of cupboard doors or drawers in the kitchen, bathroom and other rooms in the home, office or recreational vehicle.
Patent CA-2093829-A1 (CA)
Title: Method for the coating of the center roll in the press of a paper machine and a center roll in the press of a paper machine
Inventor: SNELLMAN JORMA
IPC: D21F3/08
Filed: 1993-04-13
Abstract: The invention concerns a method for the coating of the centre roll (K) in the press of a paper machine and a centre roll (K) in the paper machine. The centre roll (K) in the paper machine is made of a ceramic or metal-ceramic basic material. In view of obtaining the desired adhesion properties of the face (K') of the centre roll (K), the desired portions of the centre roll (K) are coated or soaked with a polymer coating (X2). <IMAGE>
Patent CA-2093979-A1 (CA)
Title: Prefabricated building foundation
Inventor: JAMES JOHN M
IPC: E02D27/01
Filed: 1993-04-14
Abstract: PREFABRICATED BUILDING FOUNDATION               ABSTRACT OF THE DISCLOSURE      A structural member is provided for the tilt-up assembly of a foundation of a structure.  The member is characterized by fastening means adapted to restrict lateral shifting of the member relative to adjacent members, and comprises either a wall panel, a wall T-junction member, a wall corner member, an elongate straight footing member, a T-junction footing member or a footing corner member.   The fastening means may comprise a rabbet joint.     The footing members may be provided with an upwardly-extending key adapted to mate with a groove recessed into a lower face of a wall member. The member may be coated with a water resistant coating prior to assembly thereof into a foundation.   A resilient waterproof membrane may be interposed between adjacent members within a completed foundation, to provide a resilient seal between adjoining members.   Methods for constructing a foundation from  the  members  are  disclosed,  employing  either  a prefabricated footing, a conventional poured footing, or the use of a "wet footing" method, wherein prefabricated wall members are positioned onto a poured footing prior to setting of the concrete of the footing, resulting in a rigid, unitary foundation.