baber/WOPTO huggingface dataset:
Patent CA-2014871-A1 (CA)
Title: Package to board variable pitch tab
Inventor: DUNAWAY THOMAS J
IPC: H01L23/495
Filed: 1990-04-19
Abstract: A variable pitch tab leadframe assembly comprising a plurality of patterned conductive elements for transmitting input and output signals to bonding locations on an electronic device. The leadframe assembly comprises conductive elements with a variable pitch to accommodate a plurality of standard pitch bond site printed circuit board footprints.
Patent CA-2015098-A1 (CA)
Title: Preparative process for 3-amino-2-thioxo-oxazolidin-4-ones
Inventor: ADAMS JOHN B JR
IPC: C07D263/52
Filed: 1990-04-20
Abstract: TITLE PREPARATIVE PROCESS FOR     ABSTRACT OF THE DISCLOSURE A new process for the preparation of 3-amino-2-thioxo-oxazolidin-4-ones comprising sequential reaction, in an organic medium, of a 2-hydroxy-carboxylic acid ester with a base, with carbon disulfide, with an acylating agent, and with a substituted hydrazine.  The products are useful as antifungal agents.  An exemplary compound prepared by the process is 5-methyl-5-phenyl-3-phenylamino-2-thioxo-oxazolidin-4-one.
Patent CA-2017178-A1 (CA)
Title: Human prourokinase variants, methods of producing same, dna sequences, plasmids and hosts therefor
Inventor: TANABE TOSHIZUMI
IPC: C12N9/72
Filed: 1990-05-18
Abstract: ABSTRACT OF THE DISCLOSURE A human prourokinase variant derived from human prourokinase by modifying the latter so that an amino acid sequence (I) of the formula Asn-X-Y         (I) wherein X is any amino acid residue and Y is Ser or Thr, occurs in the epidermal growth factor domain thereof which shows  a  half  life  in  blood  significantly  longer  as compared with known human PUK and urokinase and comparable to that of the human PUK variant deficient in the whole EGF domain.
Patent CA-2018221-A1 (CA)
Inventor: SEKI MITSUHIRO
IPC: H05K3/00
Filed: 1990-06-04
Abstract: ABSTRACT OF THE DISCLOSURE       A film guide device for film bonding in which a movable guide roller support and guides the film and swing roller arms prevent the slackening of the film while the film is being fed.  Also, a driving action of a rotation-drive source, which controls the movement of the movable guide roller support arms, is synchronized with the braking of the film supply role and the movement of the leading edge of the film towards the bonding surface.  This device prevents  longitudinal  wrinkles  in  the  film, misplacement on the bonding surface, and excessive tension on the film.
Patent CA-2018741-A1 (CA)
Title: Rouleau conducteur de courant
Inventor: JACQUES CLAUDE
IPC: C25D7/06
Filed: 1990-06-11
Abstract: Rouleau conducteur de courant, en particulier pour ligne d'électrolyse en continu, comprenant de façon connue en soit un corps (120) en acier, caractérisé par le fait qu'il comprend au moins sur une partie de sa longueur, une frette interne en cuivre (130).
Patent CA-2019267-A1 (CA)
Title: Checkweighing method and apparatus
Inventor: HUGHES MELVILLE G
IPC: B65B1/46
Filed: 1990-06-19
Abstract: ABSTRACT            Title:  Checkweighing Method and Apparatus The invention provides a method of assessing the weight of items passing along a conveyor line, which comprises directing the items to pass from the conveyor line onto a conveyor means positioned beside the line so that the items by-pass a length of the conveyor line before rejoining the latter, and weighing the items on a weight assessment device (such as a weigh load cell) included in the conveyor means.            Also provided is apparatus for use in such a method comprising a conveyor means, including a weight assessment device, for location beside the conveyor line, and means for directing the items onto the conveyor means so that they by-pass a length of the conveyor line before rejoining it.  The conveyor means conveniently comprises an infeed section, for acceleration and separation of the items and an outfeed section for realignment of the items prior to their return to the conveyor line.
Patent CA-2020319-A1 (CA)
Title: Flash evaporation method for producing superconducting powder
Inventor: LIANG SAMUEL
IPC: C01G3/00
Filed: 1990-07-03
Abstract: ABSTRACT    An  apparatus  and  method  for preparing  particles  of superconductor  material  includes  a  container  for holding  a prepared solution of barium, copper and a rare earth element dissolved in nitric acid.  A nozzle is provided to release an aerosol spray of the solution onto the smooth surface of a preheated plate.  Contact of the sprayed solution with the hot surface evaporates the sprayed solution to vaporize water in the  solution  and  form  an  atomically  mixed,  homogeneous precipitate.  A scraper is provided to remove the precipitate from the surface of the plate, and this precipitate is then denitrated and then calcined in a furnace.
Patent CA-2023096-A1 (CA)
Inventor: MITCHELL KENT E
IPC: C08F4/642
Filed: 1990-08-10
Abstract: A catalyst useful in the polymerization of olefinic compounds and particularly 4-methyl-1-pentene is disclosed along with its method of preparation and use. The catalyst is prepared by (a) forming a first component by reacting reactants comprising a magnesium dihalide, a phenol, and alkylbenzoate, and a titanium tetrahydrocarbyloxide; (b) reacting the first component with an organoaluminum halide compound to produce a solid product; and (c) then contacting the resulting solid product with an activating liquid comprising titanium tetrachloride and trichlorosilane in a confined zone under pressure of at least 70 psi.
Patent CA-2027753-A1 (CA)
Inventor: HUTCHINGS RICHARD S
IPC: C11D3/395
Filed: 1990-10-16
Abstract: An aqueous oxidizer composition having a pH of from about 4 to 11 comprising on a weight basis from about 0.01 to about 10% of an alkali metal halogenite and a salt selected from the group consisting of salts of transition and post-transition metals and mixtures thereof, said salt being present in a concentration sufficient to obtain a metal ion concentration of at least about 0.0001%.
Patent CA-2030441-A1 (CA)
Title: Device for corner design on walls covered with ceramic tiles
Inventor: SCHLUTER WERNER
IPC: E04F19/06
Filed: 1990-11-21
Abstract: DEVICE FOR CORNER DESIGN ON WALLS COVERED WITH CERAMIC TILES          ABSTRACT OF THE DISCLOSURE            The invention relates to a device for the completion of a corner on walls covered with ceramic tiles or similar material, in which two, or usually three, angled profiles are brought together at right angles.  There are attachment shanks on each angled profile which are provided with cut out openings and can be laid under the ceramic tiles.  The profiled finishing shanks which are approximately in the shape of a quarter circle flush finish and outline the corresponding ceramic tiles.  A transition profile is provided between the finishing shanks of the angled profiles which are brought together in the corner area.
Patent CA-2030922-A1 (CA)
Title: Optical memory and information processing apparatus
Inventor: MAEDA YOSHIHITO
IPC: G11B7/24
Filed: 1990-11-27
Abstract: ABSTRACT OF THE DISCLOSURE         The invention relates to an optical memory in which an optical recording medium is built in a case, and also to a memory apparatus.  Recording, reproducing and erasing operations are performed by irradiating light via a transparent portion of the case onto the built-in optical recording medium.  The optical recording medium built in the case has face vibrations with respect to the case, because it is moved within the case.  The present invention is characterized by employing such a construction for optically mitigating irregular fluctua-tion in reflectivity caused by this face vibration.          In the optical memory of the present invention, the reflectivity fluctuation caused by an interference effect made between reflection light from the case and air, and also reflection light from the optical recording medium and air due to the relative deviation in the face vibrations, may be reduced by antireflection films provided in the case and the optical recording medium.  In a memory apparatus of the present invention, the above-described memory is mounted, the fluctuation in the reflectivity is monitored and laser power is varied in order to further mitigate the reflection vibrations.
Patent CA-2031328-A1 (CA)
Title: Xanthine derivatives, their production and use
Inventor: MORIMOTO AKIRA
IPC: C07D473/00
Filed: 1990-12-03
Abstract: Abstract of the Disclosure Novel xanthine derivatives of the formula (I):                                   (I) wherein R1, which may be optionally bound through a hetero atom, is a hydrocarbon residue which may be substituted; one of R2 and R3 is a hydrocarbon residue which may be substituted, and the other is hydrogen or a hydrocarbon residue which may be substituted; R4 is hydrogen, halogen or nitro; R5 is a residue capable of forming an anion or a residue convertible into the anion; A is a direct bond or a spacer having atomic length of two or less; n is an integer of 1 or 2; and Y and Z, which may be the same or different, are an oxygen atom or a sulfur atom; and the pharmaceutically acceptable salts thereof have potent angiotensin II antagonist activity and hypotensive activity, thus being useful as therapeutic agents for treating circulatory ststem diseases such as hypertensive diseases, heart diseases, strokes, etc.
Patent CA-2031680-A1 (CA)
Title: Compounds
Inventor: MACLACHLAN WILLIAM S
IPC: A61P31/04
Filed: 1990-12-06
Abstract: B2880/3004/Abs Abstract A compound of formula (I), or a pharmaceutically acceptable salt thereof:                                             (I) wherein R1 is a carboxylic acid group, a derivative thereof, a ketone residue, an aldehyde function or optionally substituted methyl; R2 is hydroxy, C1-8 alkoxy or a fluorine atom; and R3 is an amino group or a derivative thereof.
Patent CA-2033197-A1 (CA)
Inventor: VAN AVERMAETE GILBERT
IPC: F01L1/344
Filed: 1990-05-25
Abstract: PRECIS . Transmission à calage variable, comportant une seule prise de force d'entrée et une seule prise de force de sortie, caractérisée en ce qu'elle consiste en un ensemble comprenant un seul élément porteur (1) et un élément baladeur (2) coulissant, dont les deux engrenages (3,4) sont chacun solidaires d'un manchon (respectivement 20,20') à un seul support de roulement (respectivement 22,22') situé dans un logement approprié (respectivement 21,21') de l'élément baladeur (2), et en ce que des deux côtés latéraux de l'élément porteur (1) sont disposés des tubes de guidage (respectivement 7,7') axés perpendiculairement par rapport aux plans (12,12') de l'élément porteur (1) pour recevoir des axes guides (8,8'), dont l'une de leurs extrémités est fixée perpendiculairement aux plans (11,11') de l'élément baladeur (2).
Patent CA-2035788-A1 (CA)
Inventor: TARRSON EMMANUEL B
IPC: A46B7/04
Filed: 1991-02-06
Abstract: An interdental toothbrush handle has a hinged locking retainer on the end of an elongated handle.  The locking retainer has a hole which is positioned relative to a groove in the handle so that a twisted wire brush may be locked into place simply by inserting it and closing the retainer.  A latch on the locking retainer has a top end which protrudes beyond the handle when the retainer is in a locking position.
Patent CA-2036126-A1 (CA)
Title: Food mixing appliance
Inventor: ARTIN ROBERT L
IPC: A47J43/08
Filed: 1991-02-11
Abstract: ABSTRACT OF THE INVENTION:          A food mixing appliance having two sets of rotatable spindles, each set detachably receiving a pair of mixing implements which are retained by a manually operable retainer slidably movable in two directions to permit sequential insertion and retention of both implements in either pair.  The appliance further including a detachable connection between a mixing head and a support column including an axle having a cutaway portion separating two journal portions, which axle is engaged by parallel spaced walls and a retaining wall extending from one of such spaced walls a distance equal to said cutaway portion.
Patent CA-2036677-A1 (CA)
Inventor: KOIKE NOBORU
IPC: H01Q1/24
Filed: 1991-02-19
Abstract: This extendable antenna is related to an extendable antenna for a portable radio transceiver.     The antenna has a first antenna portion and a second antenna portion connected with a connecting portion of the first antenna portion. The first antenna has a loading coil which is enclosed in a top end cap. When the second antenna portion is retracted into a housing, the connecting portion is held by a holding member disposed in the top of the housing, and the connecting portion is ellectrically connected with the circuitry of the transceiver via the holding member. Furthermore, the electrical length of the loading coil is a quarter wavelength, while the physical length of the loading coil is ?uch less than a quarter wavelength.     Accordingly, even if the top end cap is only located out of the housing. the first antenna portion detects a radio frequency signal.          Furthermore it is unnecessary for the radio transceiver to have an inner antenna and a rod antenna. and switching means for switching from the rod antenna to the inner antenna. And it is unnecessary for the housing to have space for the the inner antenna.
Patent CA-2044990-A1 (CA)
Title: Self-locking ceiling panels
Inventor: HOWARD CHARLES I
IPC: E04B9/04
Filed: 1991-06-19
Abstract: A self-locking panel assembly for use as ceiling panels comprising a plurality of panel units. Each panel unit is formed out of one or more panel elements and a rail extending across the panel elements. The rail is formed out of a lower section and an upper section that are offset from each other such that at one end of the unit the lower section forms a tongue sticking out, and at the opposite end, the upper section, in combination with the panel element, forms a slot dimensioned to receive the tongue. The ends of the rail are complementary and nonlinear such that they fit together. The panel units of this invention are installed in place. The rail of a first panel locks in place with the rail and panel element of the adjacent panel. The edges of the adjacent panels are thus restricted from movement so as to limit the individual free movement of separate panels.
Patent CA-2045513-A1 (CA)
Inventor: WANGER FREDDY
IPC: D01H13/28
Filed: 1990-12-20
Abstract: A method for steaming of spun cops based on a trough-shaped steamer (2) arranged directly adjacent to a spinning machine (1) parallel to the cops (15) of a spinning station (14) standing in a row. This enables a conventional handling device (17) to move the cops (15) from the spinning stations (14) into the steamer (2) and, after the steaming process, to move the cops (15") from the steamer (2) to the conveyor (16) of the spinning machine (1).      The steaming process is thus integrated with the material flow of the spinning plant.      The dwell times of the cops after steaming are largely predeterminable. Also, the space requirements of the equipment are minimal and there is no need for additional manual moving of the cops.
Patent CA-2049721-A1 (CA)
Title: Video signal recording apparatus
Inventor: SAKAMOTO ETSUROU
IPC: H04N9/896
Filed: 1991-08-22
Abstract: Video signal recording apparatus wherein a video signal is processed, such as in time division multiplexed format. A burst clock signal of frequency f b is generated for recovering the video signal during a subsequent reproduction operation; and this burst clock signal is added to a DC level portion that is present in the processed video signal, resulting in a combined signal. The combined signal is frequency modulated and recorded on a record medium. Assuming that the DC level of the processed video signal is represented by a modulating frequency f a, if f a ~~f b, then ~2f a - mf b - f b~ ~ 0.15f b; and if f a ~ ~ f b, then ~mf b - 2f a - f b~ ~ 0.15f b.
Patent CA-2049919-A1 (CA)
Inventor: FAN EUGENE
IPC: G01N33/543
Filed: 1991-02-08
Abstract: The invention disclosed herein relates to the field of one-step assays and latex agglutination tests ("LAT"), and provides an improved method of preparing and using a one-step immunoassay, as well as improved methods of preparing coated latex particles for use in diagnostic assays, and especially, immunochromatographic assays.
Patent CA-2051071-A1 (CA)
Title: Ammonia production
Inventor: BALI ANIL K
IPC: C12N1/21
Filed: 1991-09-10
Abstract: ABSTRACT AMMONIA PRODUCTION A  mutant  nitrogen  fixing  bacterium  wherein  nitrogenase activity is controlled by a nifA or niA-like gene which is in turn regulated solely by a nifL or nifL-like gene characterised by  the  modification  that  it  has  a  mutation  in  the  nifL or nifL-like gene, but a functional nifA or nifA-like gene.
Patent CA-2054945-A1 (CA)
Title: Exercise device capable of simulating skating motion
Inventor: DUNNE MICHAEL
IPC: A63B23/04
Filed: 1991-11-05
Abstract: ABSTRACT OF THE DISCLOSURE      An exercise device capable of simulating skating motion, comprising a flat base strip having a low friction surface, and a pair of end stops mountable on said strip to define therebetween a sliding zone in which a user can perform a side-to-side skating movement between said end stops, each said end stop having an inwardly facing inclined anti-skid surface for bringing the user's feet to a gradual stop at the end of each side-to-side movement.
Patent CA-2056718-A1 (CA)
Inventor: VERNON GEOFFREY W
IPC: B65B29/04
Filed: 1991-11-29
Abstract: TAGGED ARTICLES AND METHOD AND APPARATUS FOR THEIR PRODUCTION            ABSTRACT OF THE DISCLOSURE         A method and apparatus are described for tag and thread assembly for tagged infusion packets.  Spaced tags from a strip of tags and a length of thread are laid over each other on the periphery of a first assembly wheel and the thread is drawn out in loops between successive tags.          The spaced tags and looped thread are transferred to a second assembly wheel where they are connected to a web of sheet material that is to form the infusion packets.  The web is subsequently formed into a series of compartments in which infusion material is contained.  The compartments are severed from the web for forming the individual packets and the thread is simultaneously severed between the packets.
Patent CA-2058074-A1 (CA)
Inventor: FACCIA TIZIANO
IPC: A01K5/02
Filed: 1991-12-19
Abstract: COUNTERBLADE EXTRACTING DEVICE                   ABSTRACT OF THE DISCLOSURE    Counterblade    extracting   device   for    extracting counterblades  pivoted in slots of a wall including  a  disk element  which  is  rigidly  associated  with  a  lever-like actuation element and which is arranged adjacent to the side of  the counterblade and rotatably coupled  thereto  outside the wall.
Patent CA-2059705-A1 (CA)
Title: Rear window stop lamp for motor vehicles
Inventor: SASAJIMA TETSUO
IPC: F21Y101/02
Filed: 1992-01-20
Abstract: A rear window stop lamp for a motor vehicle, which is energizable when the brake of the motor vehicle is applied, has a resin-molded body attached to the interior side of a rear window glass sheet. The resin-molded body has at least one cavity having a curved reflecting surface.      An LED chip is disposed in the cavity substantially at a focal point of the curved reflecting surface. A transparent resin-molded body surrounds the LED chip. A light distribution lens plate covers an opening of the cavity for directing rearwardly a light beam emitted from the LED chip and reflected by the curved reflecting surfaces. The light distribution lens plate comprises a Fresnel lens. A printed electric wire board is embedded in the resin-molded body for energizing LED units. The printed electric wire board is made of a material having a coefficient of thermal expansion which is closer to that of the rear window glass sheet than to that of the resin-molded body. A thermal expansion inhibiting plate, also embedded in the resin-molded body, is made of a material having a coefficient of thermal expansion which is closer to that of the rear window glass sheet than to that of the resin-molded body.
Patent CA-2060282-A1 (CA)
Title: Pyrimidinyloxy(thio) quinoline derivative, preparation process of the derivative, and agri-horticultural fungicide comprising the derivative as active ingredient
Inventor: ISHIKAWA KATSUTOSHI
IPC: C07D401/12
Filed: 1992-01-29
Abstract: Disclosed are pyrimidinyloxy(or thioxy)quinoline derivatives represented by the formula (I)   (I) (wherein X is oxygen or sulfur, Y is hydrogen or halogen, Z is hydrogen or methyl, R1 and R2 are methoxy or methyl and n is an integer of 1 or 2} which exhibit an excellent controlling effect for plant diseases and are also safe for crop plants, preparation processes of the derivatives, and agri-horticultural fungicides comprising the derivatives as an active ingredient.
Patent CA-2061458-A1 (CA)
Inventor: JOYCE RONALD S
IPC: H01H3/08
Filed: 1992-02-19
Abstract: A rotary adjustment device adapted for user rotation to adjust the position of an adjacent mechanism such as the linkage for actuating an electrical snap switch. The device has an outer annular cam with a central hub structure with a shaft defining surface adapted for being rotatably journalled.  The hub is suspended from the cam by torsionally stiff web structure which is radially inner an outer pairs of oppositely disposed spokes which permit resilient deflection, when unwanted side loads are applied to the shaft for preventing disturbances of the cam once the user has selected a rotary position.
Patent CA-2063192-A1 (CA)
Title: Device for removal of gas-liquid mixtures from electrolysis cells
Inventor: TRAINI CARLO
IPC: C25B15/08
Filed: 1992-03-17
Abstract: DEVICE FOR REMOVAL OF GAS-LIQUID MIXTURES FROM ELECTROLYSIS CELLS                        ABSTRACT          The present invention relates to a device for removing gas-liquid mixtures from electrolysis   cells divided into com-partments,  particularly membrane type cells, without produc-ing pressure fluctuations, wherein each compartment of said cells  is characterized in that it is provided with two different ducts for removing the  mixture after separation into liquid-rich and gas-rich phases,   each duct being con-nected with its first end to the upper part of the cell, while  the other end of the gas-rich phase duct (4) is in-serted into the liquid-rich  phase duct (3) so that  liquid is present only in the portion of the duct comprised between the connection to the cell and the point of inlet of the gas-rich phase. In the subsequent portion the flow consists in the gas-liquid mixture which is forwarded to a gas-disen-gaging vessel. As said second end of the gas-rich phase duct (4)  is inserted into the liquid-rich  phase duct (3), suffi-cient pressure is   maintained in the upper gas-separating area of  the cell   to prevent the liquid-rich phase from entering the gas-rich phase duct (4).
Patent CA-2064642-A1 (CA)
Title: Tape drive guide with constrained pivot guide post
Inventor: EATON JAMES H
IPC: G11B23/087
Filed: 1992-04-01
Abstract: The invention is a constrained pivot compound radius tape post guide.  The post is mounted on an axle which allows it to pivot when the tape changes direction.   The pivoting action  serves  to peel  away all  tape which has  been  in stationary contact with the post, thereby reducing startup stiction.    Above  a  certain  rotation  angle  the  post  is prevented from further rotation either by a fixed stop or by torque  exerted on the post by the  tape which  is  under tension.
Patent CA-2065459-A1 (CA)
Title: Water based coating for roughened metal surfaces
Inventor: HAYNER ROGER E
IPC: C09D5/08
Filed: 1990-09-19
Abstract: An emulsion of an amine neutralized hydrocarbon oxidate composition including alkali metal e.g. sodium petroleum sulfonates is applied to metallurgically prepared roughened surfaces, e.g.  carbonitrided steel, to form corrosion preventive films.