baber/WOPTO huggingface dataset:
Patent CA-2039302-A1 (CA)
Inventor: NICHOLS WILLIAM R
IPC: B01D24/00
Filed: 1991-03-27
Abstract: Automatic backwash filter systems including a filter tank divided into a multiplicity of seriate cells of substantially the same width by a plurality of vertical rectangular cell sheets are improved by provision of new spacer assemblies to mitigate bowing of the cell sheets during backwashing or other operations applied to the cells. Such spacer assemblies include horizontally aligned bores that extend through each cell sheet adjacent their top, one or more stringers that extend through the bores, and a plurality of tubes of approximately the same length substantially equal to the width of the cells. One of such tubes is positioned in each filter cell surrounding the stringer present in such cell and between the surfaces of the respective cell sheets. Where a plurality of stringers are used in the spacer assemblies arrangements are disclosed for making final connections to complete the assemblies.
Patent CA-2039713-A1 (CA)
Inventor: DURIVAGE LEON W III
IPC: H02H3/05
Filed: 1990-08-22
Abstract: A fault-powered, processor-based  circuit breaker tripping system employs a reliable low power trip indicator circuit that is normally powered from the tripping system.  A liquid crystal display is used to indicate the status of the system, and a battery is used as a secondary power source after a trip terminates the power to the system.  The battery is enabled by a manual switch or by a latch which responds to one of a plurality of trip signals from the processor.  The latch also provides signals to a driver circuit to drive the LCD. Once enabled, the battery provides power to the latch and the LCD so that the cause of the trip may be displayed during a power fault.  The manual switch can be used to select status signals to be displayed on the LCD, and to indicate the condition of the battery.  The LCD includes a segment for indicating that the system is energized and power is being drawn from the current path but that amount of power is below all fault levels and insufficient to operate the system.
Patent CA-2041038-A1 (CA)
Title: Durable low-emissivity thin film interference filter
Inventor: WOLFE JESSE D
IPC: C03C17/36
Filed: 1991-04-23
Abstract: An infrared reflecting interference filter capable of transmitting a desired proportion of visible radiation while reflecting a large portion of incident solar radiation is provided. In one preferred embodiment, the filter consists of a transparent substrate coated first with a dielectric layer, next a metal reflectance layer, and finally an outer protective dielectric layer. In addition, between each metal-dielectric interface is deposited a nucleation or glue layer that facilitates adhesion. The interference filters are durable and can be modified to provide a full range of optical and electrical characteristics.
Patent CA-2042009-A1 (CA)
Title: Video interface circuit
Inventor: BECKETT PETER
IPC: G09G5/06
Filed: 1991-05-07
Abstract: Abstract Video Interface Circuit A video circuit which enables three full colour VDU's (6a,  6b,  6c)  to be driven by only one colour graphics generator  (2).   The Circuit has many uses including the generation of head down displays for flight simulators.
Patent CA-2044604-A1 (CA)
Title: Pacing lead and introducer therefor
Inventor: DUTCHER ROBERT G
IPC: A61N1/372
Filed: 1990-10-30
Abstract: 2044604 9106339 PCTABS00005 A tool (20) for implanting a pacing lead (21) into heart tissue  has a pair of side-by-side beams (37 and 38) pivoted together at  the opposite ends thereof. The beams (37 and 38) have jaws (59 and  62) that grip a lead head (24) supporting a helical electrode  (25) and a groove (43) for accommodating a section (23) of the lead  (21) extended from the head (24). A releasable lock (82)  interposed between the beams (37 and 38) operates to hold the beams in  jaw closed position to grip the head (24) of the electrode. The  lock (82) has flexible fingers (89 and 91) and a movable sleeve (88) that allows one hand operation to selectively lock and release of the jaws. The helical electrode (25) has an external layer of platinum black particles (29) resulting in decreased electrical losses at the electrode-tissue interface, increased current  density, lower stimulation thresholds and increased amplitude of sensed electrical signals from the heart tissue.
Patent CA-2045515-A1 (CA)
Title: Method and apparatus for recovering pulp solids from whitewater
Inventor: RODRIGUEZ PETER A
IPC: D21F1/80
Filed: 1990-11-02
Abstract: A method of feeding a stream of whitewater (27) from a paper making process into a wedge-shaped zone between horizontal travelling upper and lower converging wire meshes (11, 12), applying a siphon means (10) to the upper mesh (12) in the zone to form a web (71) of solid fibrous material between meshes, separating the upper mesh (12) from the web (71) to leave it supported on the lower mesh (11) as meshes (11, 12) leave the zone; washing all solids from meshes (11, 12) into a receiving vessel (48) recycling the vessel contents to the paper making process; recovering in a pool (56) purified liquid from the siphon means (10), and recycling such liquid for use in showers and the like in the paper making process. Preferably, another stream of an aqueous dispersion of pulp via pipe (66) is introduced adjacently below the upper mesh (12) to cause pulp to form on such mesh (12) which enhances removal of entrained solids from the whitewater. Apparatus to perform the above method is also provided.
Patent CA-2045719-A1 (CA)
Title: Neutral and positively charged dyes for eloctrophoresis sample loading solutions
Inventor: TICE GEORGE JR
IPC: G01N27/447
Filed: 1991-06-26
Abstract: TITLE NEUTRAL AND POSITIVELY CHARGED  DYES FOR ELECTROPHORESIS SAMPLE LOADING SOLUTIONS                 Abstract A method of electrophoretically separating bioorganic molecules is disclosed.  The method uses a slab electrophoresis gel and positively or neutrally charged dyes to prevent the dyes from interfering with the gel readout.
Patent CA-2046755-A1 (CA)
Title: /2r/-2-[di/2-propyl/phosphonylmethoxy]-3-p-toluenesulfonyloxy-1-trimethylacetoxypropane, its preparation and use
Inventor: ALEXANDER PETR
IPC: C07F9/6515
Filed: 1991-07-11
Abstract: The invention relates to the new compound (2R)-2-[di(2-pro-pyl)phosphonylmethoxy]-3-p-toluenesulfonyloxy-1-trimethylacetoxy-propane and the method of producing it. The compound may be used for producing (S)-N-(3-hydroxy-2-phosphonylmethoxypropyl) deriva-tives of the heterocyclic purine and pyrimidine bases of antiviral activity.
Patent CA-2047744-A1 (CA)
Inventor: KOZIKOWSKI ALAN P
IPC: C07D221/22
Filed: 1990-02-21
Abstract: The present invention relates to racemic huperzine A, a pharmaceutical composition comprising huperzine A, its use as a medicament and for the manufacture of a medicament for the inhibition of the cholesterase enzymes in a mammal.
Patent CA-2048896-A1 (CA)
Inventor: ASAHINA YOSHIKAZU
IPC: C07D491/14
Filed: 1991-08-09
Abstract: A novel compound representing the general formula (I) as below:    The compound has antineoplastic activities and low toxicity.      Pyranoindolizine derivative having the general fromulas (II) or (III) below:    And a process for producing the pyranoindolizine derivative.
Patent CA-2049971-A1 (CA)
Title: Selectively flexible annuloplasty ring
Inventor: LAM HUNG L
IPC: A61F2/24
Filed: 1990-02-01
Abstract: An annuloplasty ring prosthesis 10 which is formed from a selectively flexible body element 14 having at least one defined length 16 about its circumference which is substantially rigid.      The remainder of the body element gradually increases in flexibility. The body element 14 is a substantially annular shaped body element which is designed to be sutured to the annulus of a heart valve. The body element 14 is formed from a non-corrosive, anti-magnetic material, and is wrapped in a material 20 through which sutures can be drawn to suture the prosthesis to the heart valve annulus.
Patent CA-2051224-A1 (CA)
IPC: C07F7/18
Filed: 1991-09-12
Abstract: Novel tertiary-alkyl carbamate silicon compounds are provided which are useful as coupling agents. The compounds have the formula:    (R<3>)3COC(O)N(R<4>)R-Si(R<1>(3-a))(OR<2>)a   wherein the R groups can represent various hydrocarbon and other groups and a has a value of 1 to 3. Processes are also provided for the preparation of the carbamate compounds and their use as coupling agents.
Patent CA-2052160-A1 (CA)
Title: Cleaner-desinfectant agent for surgical instruments
Inventor: KASSENTINI PHILIPPE
IPC: C11D3/48
Filed: 1991-09-24
Abstract: A cleaning-decontaminating agent composition especially for surgical instruments, which contains an amphoteric compound onto which are grafted quaternary ammonium groups, a quaternary ammonium cationic compound which has a bactericidal effect, a detergent nonionic biodegradable ethoxylated alcohol, at least one lower alkanol, an amphoteric detergent compound which has good cutaneous tolerance, a chelate, a corrosion inhibitor, a superfatting agent and a modifying agent for controlling the pH.
Patent CA-2052652-A1 (CA)
Title: Creamer lid cutting system
Inventor: CALLAHAN KEVIN M
IPC: B65B7/01
Filed: 1991-10-02
Abstract: ABSTRACT    A series of interconnected lids which supply an apparatus for applying to circular container rims individual lids severed from the series.  The series of lids comprise a series of interconnected lids which supply an apparatus  for applying to container rims individual lids severed from the series of interconnected lids, the series of lids comprising a plurality of identical lids which are equally spaced apart; the equally spaced apart lids being interconnected by identical severable tabs; the series of lids when aligned having a longitudinal axis extending along the aligned series of lids and about which each of the lids and the tabs is symmetrical; the series of interconnected lids having continuous spaced apart opposing edge portions, the opposing edge portions being the mirror image of one another and defining a consistent smooth wave pattern whereby each lid is defined by opposing outward curved portions and the tab is defined by opposing inward curved portions.
Patent CA-2056068-A1 (CA)
Title: Process
Inventor: JACOBS ROBERT T
IPC: A61K31/404
Filed: 1991-11-22
Abstract: A process for the preparation of (2R)-methyl-4;4,4-tri-fluorobutylamine, or an acid addition salt thereof which comprises a) acylating an optically active amine with 2-methyl-4,4,4-trifluorobutanoic acid or a reactive derivative thereof to afford a butyramide; b) separating (R)-diastereomeric butyramide from (S)-diastereomeric butyramide; and c) converting the (R)-diastereomeric butyramide into the desired (2R)-methyl-4,4,4-trifluorobutylamine, or an acid addition salt thereof.      The product may be acylating with a carboxylic acid of formula III    wherein U is carboxy, or a reactive derivative thereof to afford (R)-4-[5-(N-[4,4,4-trifluoro-2-methylbutyl]carbamoyl)-1-methylindol-3-yl-methyl]-3-methoxy-N-o-tolylsulphonylbenzamide. The indole is useful as a leukotriene antagonist, for example in the treatment of asthma or allergic rhinitis.
Patent CA-2057295-A1 (CA)
Inventor: WILSON MARGUERITE
IPC: E04H15/56
Filed: 1991-12-09
Abstract: ABSTRACT OF THE DISCLOSURE     A portable and temporarily installable vehicle cover is sup-ported  by  a frame, which in turn is supported by  brackets  at-tached to the vehicle rocker panels or floor pan.   Alternatively the  brackets may be secured to stakes which are secured  in  the ground near the midpoint of each side of the vehicle.   The  frame is  formed of a forward, central and rear support.  Each  end  of the forward support is secured to the brackets, while each end of the  rear  support is secured to the corresponding  ends  of  the front  support.  The front and rear supports provide support  for the  cover, while the cover itself serves to locate  and  support the  center  support.  The Frame may be  formed  of  telescoping tubular sections joined by springs, enabling the entire apparatus to be disassembled and stored within otherwise unused space  such as  the interior of a vehicle bumper.  Alternatively,  the  cover may  be left in its erected state if secured to stakes,  and  one end may be opened to allow for the entrance or exit of a vehicle
Patent CA-2058352-A1 (CA)
Title: Calibration of plural-channel system
Inventor: LOPEZ ALFRED R
IPC: G01S1/04
Filed: 1991-12-23
Abstract: H4390.01 CALIBRATION OF PLURAL - CHANNEL SYSTEM                          ABSTRACT In a system having plural signal-carrying channels, a phase shift is introduced between a signal in one of the channels and a reference signal for calibrating the individual channels.  The reference signal is obtained by adding samples of signals in other ones of the channels.  The phase shift is introduced by phase-shift apparatus responsive to a command signal directing a continuous monotonic increment of phase.  The phase incrementing introduces a frequency shift (a serrodyne), which produces a beat-frequency signal for mixing a channel signal with the reference signal.  The beat-frequency signal is phase locked to a modulation pattern of a command signal, whereby a measurement of phase (or delay) can be made between the two signals for calibration of each channel within the system.  Separate calibrations may be made for different presumed values of system delay so as to obtain a value of system delay which causes the calibration sequence to converge to fixed values of phase shift introduced in each of the channels.
Patent CA-2058485-A1 (CA)
Title: Silver-containing ethylene oxide catalyst carrier
Inventor: GERDES WILLIAM H
IPC: B01J23/68
Filed: 1991-12-24
Abstract: The invention relates to catalyst carriers for use in conjunction with silver, alkali metal promoters, rhenium promoters and optionally rhenium co-promoters selected from sulfur, molybdenum, tungsten, chromium and mixtures thereof. The carriers consist    of at least 85 and preferably 95 percent by weight of alpha alumina, from about 0.01 to about 6 percent by weight of an alkaline earth metal silicate and from about zero to about 10 percent by weight (measured as the dioxide) of added zirconium in the form of an oxide.
Patent CA-2059191-A1 (CA)
Title: Foot bathing fixture
Inventor: HINTZ JONATHAN M
IPC: A47K4/00
Filed: 1992-01-10
Abstract: ABSTRACT A foot bathing fixture includes a seat supported on a raised pedestal.  The pedestal has a hollow interior for housing a whirlpool pumping apparatus and other fixtures, for example a drain control.  A removable access panel is located on the top of the pedestal to permit access to the pedestal interior for servicing the whirlpool pumping apparatus and other fixtures.  The seat is positioned to cover the access panel when it is in position on top of the pedestal, and is hinged on the access panel so that the seat may be easily pivoted forward to access the pedestal for cleaning.
Patent CA-2064514-A1 (CA)
Inventor: JONES TIMOTHY
IPC: E21B49/00
Filed: 1992-03-31
Abstract: ABSTRACT   A method of quantitative analysis of drilling fluids comprising subjecting an untreated wet sample of the fluid to a reflectance infrared spectroscopy technique, typically attenuated total reflectance spectroscopy, and comparing the spectrum obtained with spectra obtained from calibration samples of fluids of known composition. The sample can be obtained directly from the flowing mud with no preparation or alternatively the sample might comprise a prepared sample which is re-suspended in a liquid phase carrier. The sample can also be analysed for non-spectral properties which might also provide useful information in conjunction with spectral data. The method requires little or no sample preparation and can be used to quantitatively analyse both water-based and oil-based drilling fluids using a continuous in-line and/or on-line arrangement.
Patent CA-2065760-A1 (CA)
Title: Dual electronic business set channel unit
Inventor: WISNIEWSKI JAMES J
IPC: H04Q11/04
Filed: 1992-04-10
Abstract: DUAL ELECTRONIC BUSINESS SET CHANNEL UNIT               ABSTRACT OF THE DISCLOSURE      A  communication  link  between  a  DMS  and  an  EBS telephone instrument has a pair of channel bank units which separate the customer premises equipment (CPE), including at least one EBS  instrument,  from the DMS  insofar as signaling is concerned.   A channel unit at the central office (CO) end of the link provides the responses which the DMS would expect of  an EBS telephone  instrument, carrying on signaling communication with the DMS so that, to the DMS, the channel unit "looks like" a EBS instrument. At the other, remote terminal (RT) end, another channel unit provides signals to the telephone instrument which are like those which a central office would send out so that the RT "looks" to the telephone like a CO.  The two channel units communicate with each other, transmitting signals (in addition to the encoded voice) on a T1 carrier system in a manner which is independent of the timing requirements of the  EBS  instrument  and  the  CO  and  is  therefore substantially independent of the distance between the two channel units to overcome the distance limitation between the CO and RT normally imposed by the characteristics of an EBS system.
Patent CA-2066279-A1 (CA)
Title: On-line process control neural network using data pointers
Inventor: SKEIRIK RICHARD D
IPC: G05B13/02
Filed: 1991-07-25
Abstract: An on-line process control neural network using data pointers allows the neural network to be easily configured to use data in a process control environment. The inputs, outputs, training inputs and errors can be retrieved and/or stored from any avail-able data source without programming. The user of the neural network specifies data pointers indicating the particular computer system in which the data resides or will be stored; the type of data to be retrieved and/or stored; and the specific data value or storage location to be used. The data pointers include maximum, minimum, and maximum change limits, which can also serve as scaling limits for the neural network. Data pointers indicating time-dependent data, such as time averages, also include time boundary specifiers. The data pointers are entered by the user of the neural network using pop-up menus and by completing fields in a template. A historical database provides both a source of input data and a storage function for output and error data.
Patent CA-2069532-A1 (CA)
Title: Photosensitive printing plate developed by a peel-apart process
Inventor: SHAW SONYA Y
IPC: G03F7/34
Filed: 1992-05-26
Abstract: A PHOTOSENSITIVE PRINTING PLATE DEVELOPED        BY A PEEL-APART PROCESS       ABSTRACT     A method for producing a press-ready lithographic printing plate which comprises:          (A)  providing an uncoated lithographic substrate;          (B)  coating a photosensitive layer on one side of the lithographic substrate;          (C)  providing a flexible substrate;          (D)  coating an adhesive layer directly on the flexible substrate;          (E)  laminating the coated lithographic substrate to the coated flexible substrate;        (F)  imagewise exposing the laminated element of (E) to radiation to which the photosensitive layer is sensitive; and (G)  peeling off the flexible substrate along with the nonimage areas of the photosensitive layer, leaving the press-ready image areas of the colored photosensitive layer and the adhesive layer on the lithographic substrate.
Patent CA-2071985-A1 (CA)
Title: Process and apparatus for crimping fibers
Inventor: MCCULLOUGH FRANCIS P JR
IPC: D02J1/00
Filed: 1990-10-31
Abstract: An apparatus and process for crimping and permanently heat setting a fiber or tow without imparting stress or tension on the fiber or tow comprising a conveying means (11) having a multiplicity of openings, means for supplying the fiber or tow to the conveying means (28), means for inserting (13) the fiber or tow (18) into the openings of the conveying means whereby the fiber is retained in a nonlinear shape in the openings without stress or tension, and a heating zone (17) through which the conveying means and fiber or tow pass for heat setting the fibers or tow.
Patent CA-2072051-A1 (CA)
Inventor: KREUZER MARTIN
IPC: B60R21/20
Filed: 1992-06-23
Abstract: ABSTRACT  An apparatus for impact protection on the front passenger side of a motor vehicle comprises an air bag unit, which is inserted in an opening of the instrument panel and comprises a collapsed inflatable air bag and a covering hood, which is made of a layer of elastic plastic and covers the air bag and along a rated tear line is di-vided into a section which is foldable to the top edge of the instrument panel and a section which is foldable to-ward the bottom edge of the instrument panel. Each of said sections comprises a hinge zone. To permit the use of a concave covering hood, the plastic layer contains in each of said sections a reinforcing layer made of a net-like insert of hard plastic and formed with a bulge in the hinge zone.
Patent CA-2072574-A1 (CA)
Title: Composting toilet
Inventor: JOHANSSON LASSE
IPC: E03D5/00
Filed: 1990-12-20
Abstract: The present invention concerns a composting toilet (1) comprising an outer shell (3) with an attached toilet seat (4) and a composting space (2) adapted to the interior of the outer shell (3), said space being a rotatable drum, into which solid toilet waste is collected and further transferred therefrom into a collecting container, shaft or similar storage; and means (5) for conducting liquids separately from solid waste; and a ventilation duct (31) attached to the outer shell (3). The invention is implemented by a construction in which the drum (2) is thermally insulated and, in conjunction with the inlet opening of the drum (2), to the interior of the outer shell (3), there is adapted a stationary wall (6) having a ventilation hole (64), and the toilet seat (4) with the liquids separation means (5) is adapted to the outer shell (3), at the location of the wall (6), so as to allow solid waste entering via the toilet seat to fall through a hole (62) in the wall (6) directly onto the inside surface of the drum (2).
Patent CA-2074513-A1 (CA)
Inventor: HWANG YONG
IPC: A21B1/26
Filed: 1991-01-28
Abstract: 2074513 9111660 PCTABS00006 The invention relates to a cooking oven for mass production of food products and a method for cooking food products. The oven includes an enclosure housing (10) which forms a cooking chamber (12) having an endless pervious conveyor (28) therein upon which food products are transported through the cooking chamber. The conveyor (28) is arranged to provide a helically extending path over which food products will travel to increase dwell time within the cooking chamber while taking less floor space. A heated gaseous cooking medium is introduced into the cooking chamber and is circulated through an annulus formed by the helically extending conveyor (28) to achieve high heat transfer to the food products being cooked. The oven can utilize steam and/or heated air to achieve varied cooking characteristics as desired and allows substantial versatility in the cooking process.
Patent CA-2075364-A1 (CA)
Title: L-type zeolite and catalyst for the production of aromatic hydrocarbons
Inventor: OHASHI HIROSHI
IPC: C10G35/095
Filed: 1992-08-05
Abstract: There are disclosed a new L-type zeolite and a catalyst comprising said zeolite, having a high and persistent catalytic activity for a long-term production of aromatic hydrocarbon and a process for efficiently producing aromatic hydrocarbons from nonaromatic hydrocarbon by the use of the catalyst. The L-type zeolite with both platinum components and halogen components supported thereon, has a peals intensity of 0.4 or less as determined by XANES and a small amount of dealuminization.