baber/WOPTO huggingface dataset:
Patent CA-2021615-A1 (CA)
Title: Ac to dc power conversion circuit with low harmonic distortion
Inventor: SMOLENSKI JOSEPH L
IPC: H02M7/06
Filed: 1990-07-19
Abstract: Dkt. No. 35-OR-918 AC TO DC POWER CONVERSION CIRCUIT WITH           LOW HARMONIC DISTORTION                 ABSTRACT OF THE DISCLOSURE              In an AC to DC power conversion circuit including a boost inductor connected in series between a full-wave rectifier and a DC load, a switch is connected to selectively shunt boost inductor current from the load. Switch conduction is controlled by a pulse width modulator generating switching pulses at a high fixed frequency.  The pulse widths are automatically varied as a function of boost inductor current, load voltage, and an ideal sinusoidal waveform derived from the AC input voltage to force the boost inductor current to closely conform to the ideal sinusoidal waveform and thus minimize harmonic distortion, while achieving load voltage regulation and near unity power factor.
Patent CA-2021823-A1 (CA)
Title: Window display system and method
Inventor: GOLDING MICHAEL M
IPC: G06F3/048
Filed: 1990-07-24
Abstract: A windowing system is provided as an interface between   application   programs   and   non-programmable terminal drivers.  The system presents logical windows to the applications program, each of which are represented internally by at least two separate parts.   The first part includes the border and non-scrollable text for a logical window, while the second part includes scrollable text  for  the  window.   Through  calls  to  the  display driver 9 the windowing system manipulates these separate parts so that they are displayed on the screen as  a single window.
Patent CA-2021993-A1 (CA)
Inventor: NISHIZAWA JUNICHI
IPC: H01L21/225
Filed: 1990-07-26
Abstract: According to the inventive new method of doping impurity, a chemically active semiconductor surface is covered with an adsorption layer composed of impurity element which forms a dopant in the semiconductor or composed of compound containing the impurity element.      Thereafter, solid phase diffusion is effected with using the adsorption layer as an impurity diffusion source so as to form an impurity-doped region having a desired density profile in the depth direction.
Patent CA-2026028-A1 (CA)
Title: Corneal lens implant
Inventor: STOY VLADIMIR A
IPC: A61F2/14
Filed: 1990-09-24
Abstract: ABSTRACT OF THE DISCLOSURE          The present invention is directed to a corneal lens implant device which includes at least two layers of hydrogel with an interface between the layers.  The hydrogel layers have at least two different water contents (by weight) such that the difference between these water contents is sufficient to create a conver-gent or divergent lens at the aforesaid interface.  The refractive power of the interface of the implant of the present invention is independent of the outside optical medium so that the high permeability and high refractive power can be achieved within the space constraints of the cornea.  In preferred embodiments, hydrogels have a water content of at least 40% and preferably 50% by weight with no greater than 99% by weight and preferably no greater than 95% by weight of water content.  Pre-ferred embodiments also include the use of hydrogels having both hydrophilic and hydrophobic polymer phases. In some embodiments, the hydrogel layers form a Fresnel optical surface which may be composed  of finite optical elements such as prismatic elements with the slope of each element approximating the local slope of a parent optical surface at the same distance from the optical axis.  Thus, some preferred embodiments have finite optical elements with a shape such as triangular, rectangular, hexagonal or concentric rings or spirals.
Patent CA-2027053-A1 (CA)
Inventor: HOFFMANN HANS-RAINER
IPC: A61L15/16
Filed: 1990-10-05
Abstract: The present invention relates to active substance plasters for the controlled release of active substances to the skin consisting of a backing layer, an adhesive film connected therewith which film is water-soluble and consists of pressure-sensitive adhesive which comprises water-swellable polymers and in which the active substance is at least partially soluble, and of a removable protective layer covering the adhesive film, in which plasters the pressure-sensitive adhesive is based on homo and/or copolymers with at least one derivative of the acrylic or methacrylic acid, and which comprise as active substances, partially or completely dissolved in the adhesive, at a concentration of 0.5 to 10.0%-wt estrogens and their pharmaceutically acceptable derivatives along or in combination with gestagens.
Patent CA-2027398-A1 (CA)
Inventor: KAWAI ISAO
IPC: H04N1/107
Filed: 1990-10-11
Abstract: A magnifying display apparatus for displaying enlarged images of characters or the like comprises a photoelectric-converting reading unit including a body and an opticals ystem disposed in the body and having a light-path inversion prism, a magnifier lens system, an iris, an imaging device and illuminating lamp.  The apparatus further comprises a controller connected to the reading unit and including a power supply circuit for the reading unit and also a control circuit for controlling the conversion of the output from the imaging device into an image output.  The apparatus also comprises a display unit such as a television separably connected to the controller.          A recess or a protrusion is formed on a front upper portion of the body at a position corresponding to the light-path inverting prism so as to be sensible by a user's finger, thus serving as an index of the portion of the original to be magnified and displayed.  Operating means for operating iris and other mechanisms are disposed on lateral sides for easy manipulation of other finger or fingers of the user's hand gripping the reading unit body.
Patent CA-2029205-A1 (CA)
IPC: D21F1/02
Filed: 1990-11-02
Abstract: A headbox apparatus is disclosed for forming a multi-ply web from a first and a second flow of stock flowing through the apparatus.  The apparatus includes a headbox housing which defines a slice chamber for the passage therethrough of the first and second flow of stock.          The chamber has an inlet end and an outlet slice.  A first trailing element is disposed within the chamber with the first element having an upstream and a downstream edge respectively.  The upstream edge is pivotally connected to the inlet end and the downstream edge freely floats adjacent to the outlet slice.  The first element is disposed between the first and the second flows of stock.  A second trailing element is spaced relative to the first element and is disposed within the chamber.  The second element has an upstream and a downstream termination respectively.  The upstream termination is pivotally connected to the inlet end and the downstream termination freely floats adjacent to the outlet slice.  The elements define therebetween a channel for channeling a flow of water.  The flow of water flows from the inlet end towards the outlet slice such that during ejection of the first and second flow of stock and the flow of water through the outlet slice and downstream thereof, the flow of water inhibits migration between the first and second flow of stock.
Patent CA-2031884-A1 (CA)
Inventor: LABAT JEAN
IPC: H01M10/36
Filed: 1990-12-10
Abstract: ABREGE : Générateur électrochimique rechargeable comprenant une cathode à base d'oxyde de vanadium. Générateur électrochimique rechargeable dont l'anode (2) est à base de lithium ou d'alliage de lithium, dont l'électrolyte est constitué par une solution d'un sel de lithium dans un solvant non aqueux, et dont le matériau cathodique (1) est a base d'oxyde de vanadium, caractérisé par le fait que ledit oxyde de vanadium contient une phase ?' issue de l'oxydation par voie chimique ou électrochimique d'une phase LiV2O5 ? obtenue par l'insertion dans ledit oxyde d'un nombre d'atomes de lithium par mole de V2O5 compris entre 0,9 et 2. FIGURE A PUBLIER : Fig.1
Patent CA-2033337-A1 (CA)
Inventor: BOBO DONALD E JR
IPC: A61M5/168
Filed: 1990-06-20
Abstract: Un système de perfusion (11) comprend des composantes de distribution de liquide pour distribuer un liquide à partir d'une source distincte (13) du liquide dans l'organisme d'un patient, des composantes à transducteur (51) pour produire un signal relié à la pression du liquide dans les composantes de distribution de liquide (17), et des composantes d'identification réagissant au signal pour identifier les artéfacts de pression caractéristiques de l'activité du patient. On peut employer la perfusion par gravité, de même que la perfusion avec dispositif de régulation du débit (15), et on peut faire l'identification avec un microprocesseur (59) pour examiner la forme d'ondes du signal et identifier les artéfacts de pression caractéristiques de l'activité du patient parmi les changements de pression causés par les composantes de distribution du liquide (15, 17) de manière qu'on puisse mener des vérifications sur place durant les périodes tranquilles, c.-à-d. les périodes de faible activité du patient. Une méthode pour détecter une situation anormale de perfusion consiste à perfuser un liquide dans l'organisme du patient par un conduit (17), l'activité du patient pouvant influer sur la pression du liquide dans le conduit (17), à surveiller la pression du liquide dans le conduit (17) pour détecter les artéfacts de pression caractéristiques de l'activité du patient, et à effectuer une vérification sur place pour détecter les situations anormales de perfusion quand on ne détecte pas d'artéfacts de pression.
Patent CA-2033480-A1 (CA)
Title: Indolyl-3 polyamines useful as antagonists of excitatory amino acid neurotransmitters
Inventor: SACCOMANO NICHOLAS A
IPC: A01N43/38
Filed: 1990-12-31
Abstract: A substantially pure compound, derived from the venom of Agelenopsis aperta spider, of the formula <CHEM>  wherein each R is the same and is H or OH. The polyamines of this invention and the salts thereof antagonize excitatory amino acid neurotransmitters, which neurotransmitters affect cells of various organisms, and are useful in antagonizing said neurotransmitters, per se, in the treatment of excitatory amino acid neurotransmitter mediated diseases and conditions and in the control of invertebrate pests.
Patent CA-2033847-A1 (CA)
Title: Capped polyphenylene ethers
Inventor: KOWALCZIK UDO
IPC: C08G65/48
Filed: 1991-01-09
Abstract: ABSTRACT         Capped polyphenylene ethers or mixtures thereof prepared by reacting polyphenylene ethers composed of the following units   wherein Q1 and Q2 are hydrocarbyl radicals having 1 to 10 carbon atoms, Q3 and Q4 are hydrogen or hydrocarbyl radicals having 1 to 10 carbon atoms with from about 0.5 to about 10% by weight, relative to the polyphenylene ethers, of imides of the general formula                         and/or wherein R1 is aromatic or saturated aliphatic radical having 1 to 20 carbon atoms, R2 and R3 are aromatic or saturated aliphatic radical having 1 to 12 carbon atoms, R4 is (CH2)m where m is from 3 to 11 and n is from 1 to 3.  The reaction is carried out at a temperature of from 230° to 330°C, preferably in the melt.  The capping components are neither aggressive nor corrosive.  The resulting capped polyphenylene ethers have increased oxidative and thermal stability and are useful as components of molding compositions.
Patent CA-2034034-A1 (CA)
Title: Process for the production of antibodies
Inventor: BREM GOTTFRIED
IPC: C12N15/13
Filed: 1991-01-11
Abstract: Process for the production of proteins with antibody activity in which one or several DNA sequences coding for this protein are introduced into the male pronucleus of a fertilized ovum of a pig or rabbit by microinjection, the ova are implanted in the oviduct of a pig or rabbit, the offspring are bred and the protein with antibody activity is isolated from their serum in the usual way whereby the DNA sequences used for the microinjection are free of bacterial foreign sequences, and are preferably used with immunoglobulin promoter and enhancer sequences.
Patent CA-2034441-A1 (CA)
Title: Transparent shatter-resistant silicone coating
Inventor: MAGUIRE THOMAS F
IPC: C09D183/04
Filed: 1991-01-17
Abstract: PATENTS Docket No.  60SI-1342 TRANSPARENT SHATTER-RESISTANT SILICONE COATING                   ABSTRACT OF THE DISCLOSURE            A transparent  and  fast  curing  composition suitable for use as a shatter-resistant coating on a glass, porcelain, or ceramic surface, wherein the composition comprises:       (A). at least about 62 to about 71 parts by weight of a solid,  benzene  soluble  resin  copolymer  consisting essentially of R3SiO1/2 units and SiO4/2 units, (B). from about  29  to  about  38  parts  by weight  of  an essentially  cyclic  free,  polydiorganosiloxane,  the viscosity of the polydiorganosiloxane having a value of from about 500 to about 1,000,000 centipoises at 25°C,  the total  of  (A) and (B) being 100 parts by weight;       (C). an organopolysiloxane having silicon bonded hydrogen atoms, (D). a platinum containing catalyst in sufficient quantity to provide at least 0.1 part by weight of platinum for every one million parts by weight of the combined weight of (a), (b), and (c).       The composition forms a coating which is transparent, fast curing,  and  stable  at  elevated  temperatures.   In preferred embodiments,  component A  is present at about 66 to  about 71 parts by weight, which results in the cured composition being substantially tack-free, as well as transparent, fast curing and stable at elevated temperatures.
Patent CA-2034943-A1 (CA)
Title: Graft copolymers of monosaccharides, oligosaccharides, polysaccharides and modified polysaccharides, the preparation thereof, and their use
Inventor: DENZINGER WALTER
IPC: C11D3/37
Filed: 1991-01-25
Abstract: - 58 -        O.Z. 0050/41368 Abstract of the Disclosure: Graft copolymers obtainable by free radical-initiated copolymerization of (A)  a monomer mixture comprising (a)  a  monoethylenically  unsaturated  C4- to  C8-dicarboxylic  acid,  or  an anhydride,  alkali metal salt or ammonium salt thereof, (b)  a monoethylenically unsaturated  C3- to  C10-carboxylic acid, or an alkali metal salt or ammonium salt thereof, (c)  if  desired  another  monoethylenically  un-saturated monomer which can be copolymerized with monomers (a) and (b), and (d)  a monomer containing two or more ethylenically unsaturated, non-conjugated double bonds in the molecule, in the presence of (B)  a monosaccharide, oligosaccharide, polysaccharide, oxidatively, hydrolytically or enzymatically degra-ded  polysaccharide,  oxidized,  hydrolytically  or enzymatically degraded polyssccharide, or chemically modified monosaccharide, oligosaccharide or poly-saccharide, in the weight ratio (A):(B) of (95 to 20):(5 to 80), a process for the preparation of the graft copolymers, and detergents and cleaners containing the graft copolymers in amounts of from 0.1 to 20% by weight, are described.
Patent CA-2036328-A1 (CA)
Title: Hand tool or improved bar clamp
Inventor: SORENSEN JOSEPH
IPC: B25B5/16
Filed: 1991-02-14
Abstract: ABSTRACT OF THE DISCLOSURE           The present invention is directed to a hand tool capable of temporarily clamping two articles and is also directed to a quick-action bar clamp wherein the moving jaw can be rapidly advanced or advances in small increments using one hand.  The hand tool has a fixed jaw, a movable jaw and a slide bar with the movable jaw mounted on the slide bar.  The slide bar includes a support arrangement with the fixed jaw extending outwardly from the support arrangement.  A hand grip forms part of the support arrangement and extends longitudinally along the slide bar.  The hand grip has associated therewith a control arrangement for moving the movable jaw relative to the fixed jaw.  Such an arrangement is very versatile and convenient to use.
Patent CA-2039982-A1 (CA)
Title: Contaminated waste sterilization process,and device for carrying out said process
Inventor: ROUX JEAN L E
IPC: A61G12/00
Filed: 1991-04-08
Abstract: This method for sterilisation of contaminated waste consists in grinding the contaminated waste in order to obtain a mixture of homogeneous granulometry, in levelling this mixture of contaminated waste so as to obtain a layer of uniform thickness, and in sterilising this layer of contaminated waste by irradiating it with an electron beam field. <IMAGE>
Patent CA-2040272-A1 (CA)
Title: Variable acuity non-linear projection optics
Inventor: CHANG DAVID B
IPC: G09B9/32
Filed: 1991-04-11
Abstract: VARIABLE ACUITY NON-LINEAR PROJECTION SYSTEM           Abstract of the Disclosure The  invention  provides  a  non-linear  projection system,  which  includes  a variable acuity non-linear holographic optical element (HOE), and an apparatus for creating the HOE.   The projection system comprises a computer, a light valve which projects images generated by the computer, a lens train for focusing the images projected by the light valve, an HOE for the non-linear refraction of the focused images and a hemispherical viewing screen.  The system additionally provides means for maintaining the center of the projected images in alignment  with  center  of  the  field  of  view of  an observer.  The variation of the pixel size and spacing created by the system matches the variation of the human visual acuity of the observer permitting a realistic view to be presented while requiring a minimum of computer data to be generated and projected. The apparatus for creating the HOE utilizes a laser beam, three lens trains and a holographic recording medium.   A procedure for utilizing the apparatus to record the HOE over a large portion of its surface area is also disclosed.
Patent CA-2047568-A1 (CA)
Inventor: NOWLAN PHILIP R
IPC: A01M31/06
Filed: 1991-07-22
Abstract: ABSTRACT            It is a decoy for attracting deer, it is made of an afflatable material which can be repaired in case of an accidental puncture, it has absorbent pads inside the hind legs just above the middle leg joint to which deer attractant scents can be applied to attract deer not only throught visiual contact but also scents.  The invention also has straps or strings attached to it's legs with which to tie-down  and anchor the deer decoy to stakes driven in the ground or small trees.  The deer decoy's colors are as lifelike as possible.
Patent CA-2051826-A1 (CA)
Inventor: PENSABENE SAVERIO F
IPC: H01M50/536
Filed: 1991-09-19
Abstract: An electrode [11] for a rechargeable electrochemical cell including an electrically conductive substrate [13], a layer of an electrochemically active material [15] attached to the substrate, the active material comprising a reducible species of a metal, at least one conductive contact area [12] formed of a metallic form of said metal attached to said substrate, said metallic contact area comprising said reducible species in a converted form. A positive electrode is further provided wherein said active material is nickel hydroxide and said metallic form of said metal is nickel metal. The invention further comprises the method for manufacturing electrodes as described above, featuring use of reducing gas to effect conversion. <IMAGE>
Patent CA-2053164-A1 (CA)
Inventor: BENDIKSEN BEVERLY
IPC: C08K5/53
Filed: 1991-10-10
Abstract: TITLE OF THE INVENTION MULTIFUNCTIONAL SCALE INHIBITORS     ABSTRACT OF THE DISCLOSURE       Multifunctional scale inhibitor compositions, alone or together with polymeric structures, are described which are characterized by having, in addition to a phosphonomethylamino group, a sulfonic acid and/or carboxylic acid group.  By incorporating several types of functional groups into a single molecule, control of scale formation and deposition under more severe conditions than normally encountered can be attained.
Patent CA-2054416-A1 (CA)
Title: Modular diverter shoe and slat construction
Inventor: COTTER DAVID H
IPC: B65G47/82
Filed: 1991-10-29
Abstract: A sortation system includes a plurality of slats connected at opposite ends in spaced relation with each other to a pair of endless chains. The slats define a conveying surface moving longitudinally along a frame. A plurality of diverter shoes are provided. Each diverter shoe is movably mounted on one of the slats for lateral movement with respect to the conveying surface. Each slat is defined by a wall formed as a right cylinder including an outer surface having a planar upper portion defining the conveying surface, each diverter shoe having a support portion including a substantially continuous glide surface surrounding the wall, the glide surface having substantially the same configuration as the outer surface of the slat.      Each diverter shoe additionally has a diverting portion joined to the support portion by a dove-tail groove and includes one or more vertical diverting surfaces and a plurality of contiguous, generally planar surfaces sloping downwardly from the upper extent of each diverting surface laterally inwardly as well as forwardly and rearwardly.      Different configurations of diverting portions may be easily applied to the support portions to accommodate left-hand divert, right-hand divert or bi-directional divert applications. Both the support and diverting portions are defined by a plurality of wall segments having substantially the same thickness and arranged in a honey-comb manner.
Patent CA-2054926-A1 (CA)
Title: Enclosure and printed circuit card with heat sink and manufacturing process of such a card
Inventor: BESANGER MICHEL
IPC: H05K1/02
Filed: 1991-11-05
Abstract: ABSTRACT            ENCLOSURE AND PRINTED CIRCUIT CARD WITH HEAT SINK AND MANUFACTURING PROCESS OF SUCH A CARD            Cooling of a printed circuit card (10) with its components (13) is achieved by thermal conduction by associating with the card (10), a metal plate (15) forming a heat sink. The gap between the plate (15) and the card (10) which contains the electronic components (13) is filled with a pulp (16) with a high thermal conduction coefficient.            The cards (10) can be housed in an enclosure with metal walls (12),  itself able to be cooled by a thermosiphon system connecting it to a cold source.            Refer to figure 2.
Patent CA-2056314-A1 (CA)
Title: Composition and method relating to diesel powered vehicles
Inventor: MOZDZEN EDWARD C
IPC: C10L1/14
Filed: 1991-11-27
Abstract: ABSTRACT The present invention describes additives for fuels for use in diesel engines.
Patent CA-2056348-A1 (CA)
Inventor: TANIKAWA HIROHIDE
IPC: G03G13/20
Filed: 1991-11-27
Abstract: A toner for developing an electrostatic image is constituted by a binder resin and a colorant The binder resin is characterized by containing at least 20 wt. % of an extraction residue after 6 hours of extraction and below 20 wt. % of an extraction residue after 72 hours of extraction respectively by Soxhlet extraction with tetrahydrofuran. The toner shows a dynamic modulus and a loss modulus, respectively at 200 °C and 0.1 Hz, which are substantially unchanging with time. The properties provide the toner with a harmonization of anti-offset characteristic and fixability as well as stable viscoelasticity under heating.
Patent CA-2056914-A1 (CA)
Title: Motion sensor based on rayleigh faded signal
Inventor: HAYMOND WILLIAM D
IPC: G01S11/06
Filed: 1991-12-04
Abstract: Abstract of the Disclosure In a radio receiver, a motion sensor includes means for determining the velocity of the receiver with respect to a source of an RF signal having Rayleigh fade characteristics, including a receiver for receiving the RF signal, a received signal strength indicator for producing an indicator related to the strength of the RF signal, and a means for determining the rate of Rayleigh fading of the indicator, from which can be determined the velocity of the radio with respect to the source of the RF signal based on the Rayleigh fade rate.