baber/WOPTO huggingface dataset:
Patent CA-1306557-C (CA)
Title: System for producing dithered images on asymmetric grids
Inventor: ULICHNEY ROBERT A
IPC: H04N1/405
Filed: 1988-05-27
Granted: 1992-08-18
Abstract: SYSTEM FOR PRODUCING DITHERED IMAGES         ON ASYMMETRIC GRIDS ABSTRACT OF THE DISCLOSURE An image dithering system for producing dithered image values in response to continuous tone image values and in response to a rectangular dither matrix generated based on a dither matrix designed for a hexagonal grid.  Such a rectangular dither matrix is more immune to asymmetrical grid patterns, whose aspect ratios differ from one, than are dither matrices based on other grid patterns, most notably for square or rectangular grid patterns.
Patent CA-1308311-C (CA)
Title: Conductive metallization of substrates via developing agents
Inventor: PARR WILLIAM J
IPC: H01B1/22
Filed: 1988-06-29
Granted: 1992-10-06
Abstract: Abstract of the Disclosure A conductive metal layer is formed on a substrate by depositing copper or nickel particles on the substrate, contacting the metal particles with a specified developing agent, and heating the metal particles and the developing agent. The coated substrates have conductive surfaces and are useful for a variety of uses such as EMI shielding and printed circuit boards.
Patent CA-1322534-C (CA)
Inventor: LUNDQVIST KJELL U W
IPC: B01D33/17
Filed: 1988-06-29
Granted: 1993-09-28
Abstract: ABSTRACT      A slurry of comminuted cellulosic fibrous material (e.g. paper pulp) is acted upon so that particles contained in the slurry are separated out from the slurry and introduced into a second liquid flow, while maintained under superatmospheric pressure.  A partition divides a liquid tight pressure resistant vessel into first and second distinct chambers isolated from each other except by a slit at a mid-portion.  An inlet for the slurry and an outlet for the first liquid are connected to the first chamber, and an inlet for the second liquid and an outlet for the second slurry to the second chamber.  A screening disk is mounted for rotation in the vessel so that it fills the slit, with portions disposed in both the first and second chambers.  The screening disk comprises a screen sandwiched between first and second circular plates which have aligned through-extending openings, the openings in the first plate, and the screen, defining pockets in which separated particles are captured for transfer from the first chamber to the second chamber.  The first chamber may be much larger than the second chamber so that thickening of the pulp slurry can be accomplished.
Patent CA-1305843-C (CA)
Title: Integral wallboard and stud
Inventor: MENCHETTI ROBERT J
IPC: E04B2/30
Filed: 1988-08-24
Granted: 1992-08-04
Abstract: ABSTRACT OF THE DISCLOSURE           A wallboard and stud unit formed of an elongate strip of foldable steel affixed to the wallboard back face, adapted to be folded outwardly away from the wallboard to function as a wall stud, in a hollow wall having a plurality of such units in back-to-back relationship.
Patent CA-1312143-C (CA)
Title: Image processor with free flow pipeline bus
Inventor: BROWN DWIGHT E
IPC: G06F9/38
Filed: 1988-08-30
Granted: 1992-12-29
Abstract: ABSTRACT OF THE DISCLOSURE           A digital image processing system (10) has a pipeline bus (30) for transferring addresses and data in parallel among the components of the system, which include an image memory (16), an address generator (18) and an intensity processor (20). The pipeline bus (30) includes a pipeline address bus (34), a pipeline data bus (36), and a master timing bus (38). Through the use of handshake signals, the pipeline bus (30) permits a free flow of pipelined data among the components at whatever rate is necessary to complete the particular processing task. Image data is transferred in the form of N x N pixel subimage blocks which can be addressed using a single address.
Patent CA-1309491-C (CA)
Title: Microwave plate antenna in particular for doppler radar
Inventor: DUPUIS PHILIPPE
IPC: H01Q21/06
Filed: 1988-09-07
Granted: 1992-10-27
Abstract: ABSTRACT            MICROWAVE PLATE ANTENNA IN PARTICULAR FOR DOPPLER RADAR      The antenna constituted by a plurality of identical parallel and symmetrical linear sub-networks.  The centres of symmetry of the sub-networks are aligned on a line perpendicular to their diameter and are fed in phase.  Each sub-network is constituted by a plurality of radiating elements in even numbers disposed at regular intervals and which radiate from fields displaced from 180° from one radiating element to the following.  The pitch of the sub-network is approximately equal to a wave-length guided on the substrate of the printed circuit.  Each radiating element is a conducting square surface the side of which is approximately equal to half the guided wavelength with one corner connected galvanically to the feed line.  The direction of the surfaces change from one element to the following.
Patent CA-1321564-C (CA)
Title: Truck restraint
Inventor: PEDERSEN PAUL A
IPC: B65G69/00
Filed: 1988-09-14
Granted: 1993-08-24
Abstract: ABSTRACT OF THE DISCLOSURE     Apparatus for restraining movement of a parked vehicle away from a loading dock comprises an upwardly extending block which is movable from a lower position to an upper position which captures a portion of the parked vehicle to restrain movement of the parked vehicle away from the loading dock.  This apparatus provides a safety lock system to ensure that during loading and unloading of a parked vehicle the vehicle cannot accidentally pull away from the loading dock which would result in injury to the forklift truck operator.  A linkage mechanism is provided which provides for the raising and lowering of the block.  A drive mechanism raises and lowers the linkage in determining the lower and upper positions of the block. The linkage comprises two spaced-apart linked arms which may be in the form of a parallelogram linkage arrangement.
Patent CA-1304596-C (CA)
Title: Spacer for reinforcing mesh and spiral reinforcement cages
Inventor: SWENSON RICHARD A
IPC: E04C5/18
Filed: 1988-10-19
Granted: 1992-07-07
Abstract: ABSTRACT           A spacer for welded-wire concrete reinforcement includes an upper pigtail portion, a central shank portion, and a lower hook portion.  The lower section of the shank portion slopes outwardly and downwardly to define a nose-like spacing projection to position the wire reinforcement relative to the surface of the concrete mold.  The spacing nose also serves as a handgrip for facilitating installa-tion of the spacer on the wire reinforcement.  The spacer requires only one pair of intersecting wires for installa-tion and is adapted for use with all mesh spacings, includ-ing helical cages, and all wire sizes.
Patent CA-1299617-C (CA)
Title: Molded case circuit breaker bimetal with high calibration yield
Inventor: ARNOLD DAVID
IPC: H01H73/22
Filed: 1988-10-20
Granted: 1992-04-28
Abstract: MOLDED CASE CIRCUIT BREAKER BIMETAL     WITH HIGH CALIBRATION YIELD                       ABSTRACT OF THE DISCLOSURE   A molded case circuit breaker bimetal trip unit arrangement substantially reduces the variation in trip characteristics between circuit breakers employing the improved bimetal.  The number of circuit breakers fail-ing the in-line calibration test is correspondingly substantially reduced.
Patent CA-1340063-C (CA)
Title: Production of animal lysozyme c via secretion from pichia pastoris and composition therefor
Inventor: WILLIAMS MARK EDWARD
IPC: A61P31/04
Filed: 1988-11-02
Granted: 1998-09-29
Abstract: The present invention provides a method of producing at high levels an animal lysozyme c by culturing Pichia pastoris cells, which have a gene capable of expressing the pre-form of the animal lysozyme c in such cells, under conditions such that the gene is transcribed.  Mature animal lysozyme c is secreted at a high level from such cells into the culture medium, when the cells are cultured under conditions such that the animal pre-lysozyme c gene is transcribed in them.  Also provided by the invention are DNAs capable of transforming Pichia pastoris to express animal pre-lysozyme c's, cultures of P. pastoris cells transformed with such DNAs, bovine pre-lysozyme c2, the signal peptide of bovine pre-lysozyme c2, and DNAs encoding those polypeptides.
Patent CA-1333296-C (CA)
Inventor: SMITH DAWN
IPC: H04Q3/00
Filed: 1988-11-15
Granted: 1994-11-29
Abstract: A group emergency call system for use in a central office exchange or other communication system for alerting a group of people in the event of an emergency.  Data in the form of a hunt group assignment table is stored within the communication system, containing a predetermined pilot number for defining a particular emergency hunt group within the communication system, and a plurality of directory numbers corresponding to respective ones of the subscriber sets assigned to the emergency hunt group. Circuitry is provided for receiving dialed digit signals designating an incoming emergency call from a predetermined one of the subscriber sets and comparing the dialed digits with the pilot number, and in the event the dialed digit signals correspond to the predetermined pilot number generating a request device message signal.  Circuitry is provided for receiving the request device message signal and in response retrieving the directory numbers from the emergency hunt group assignment table and generating a plurality of ringing signals for simultaneously ringing respective ones of the subscriber sets assigned to the emergency hunt group, such that members of the emergency hunt group are alerted to the incoming emergency call.
Patent CA-1323704-C (CA)
Title: Distributed load sharing
Inventor: HART JOHN H
IPC: H04L12/28
Filed: 1989-01-13
Granted: 1993-10-26
Abstract: ABSTRACT OF THE DISCLOSURE      Methods and apparatus for exchanging frames between bridges  distribute  load  sharing  in  a  communications network.   The communications network is of the kind in which bridges, and related stations and local LANs, e.g. Ethernet LANs and 802 LANs, can be linked by paths in a plurality of sub-networks and wherein the bridges  are linked to support a Spanning Tree Protocol (STP) which elects one bridge as a root and then with respect to said root, computes and utilizes one and only one loop-free set of primary paths between all bridges.   Remaining paths, i.e. paths other than said STP primary paths, between the bridges are examined as possible sub-network paths for a Distributed Load  Sharing  (DLS)  configuration  in which frames exchanged between certain stations can utilize more than the STP one set of primary paths.  Certain ones of the remaining paths are selected as DLS paths under certain conditions and frames are routed over a selected DLS path only when those frames meet certain criteria.
Patent CA-1329024-C (CA)
Inventor: EADY JOHN A
IPC: C22F1/043
Filed: 1989-02-10
Granted: 1994-05-03
Abstract: ABSTRACT           A cast hypereutectic Al-Si alloy with  from 12-15% Si,  having  excellent  wear  resistance  and  machinability, improved  fatigue  strength  and  good  levels  of  ambient  and elevated  temperature  properties  is  provided,  as well  as  a method of producing such alloy.  The alloy and a melt used in the method contains Sr in excess of 0.10% and Ti in excess of 0.005%0 the alloy further comprising:       the balance, apart from incidental impurities, being Al.  The level of Sr in excess of 0.10% and Ti in excess of 0.005% is such that the alloy has a microstructure in which any primary Si   formed  is  substantially  uniformly  dispersed  and  is substantially free of segregation,  and in which substantially uniformly dispersed Sr intermetallic particles are present but are  substantially  free  of  such  particles  in  the  form  of platelets, with the microstructure predominantly comprising a eutectic matrix.
Patent CA-1327030-C (CA)
Title: Container bag
Inventor: FUTERMAN CHARLES S
IPC: B65D88/16
Filed: 1989-03-03
Granted: 1994-02-15
Abstract: ABSTRACT OF THE DISCLOSURE    A container bag comprising side walls and a base of flesible material.  The side walls are provided with lifting loops and have one or more side seams.  A circular woven inner lining is provided, preferably attached to the bag at the top thereof.  The liner absorbs impulsive forces and enables the bag to meet a drop test standard and additionally helps prevent seepage of materials from the bag.
Patent CA-1338936-C (CA)
Title: Process for the preparation of substituted difluorobenzo-1,3-dioxoles
Inventor: ACKERMANN PETER
IPC: C07F19/00
Filed: 1989-03-16
Granted: 1997-02-25
Abstract: The reaction of 2,2-difluorobenzo-1,3-dioxole with (a) an alkali metal or an alkali metal compound and then (b) a compound R1-Z1 in which Z1 is a leaving group, or with an aldehyde produces compounds of formula I                   (I), wherein R1 is -OH, -SH, -CHO, -CN, -COOH, -B(OH)2, -COX, with X being Cl or Br, or is -COOR2, -SiR23 or -B(OR2) 2, with R2 being a C1-C12alcohol moiety without the hydroxy group, wherein R1 is further -CnH2nCOOR2, with n being an integer from 1 to 4, or linear or branched C1-C12hydroxyalkyl which is unsubstituted or is substituted by -F, -CN, C1-C6alkoxy, phenyl, fluorophenyl, C1-C4alkoxy-phenyl, C1-C4alkylthio-phenyl, C1-C4alkyl-phenyl, C1-C4fluoroalkyl-phenyl, nitrophenyl or by cyanophenyl, or wherein R1 is a benzyl alcohol which is unsubstituted or is substituted by F, C1-C4alkoxy, C1-C4alkylthio, C1-C4alkyl, C1-C4fluoroalkyl, nitro or by cyano, or is C1-C12acyl, or wherein R1 is a radical of formula II                                        (II), wherein R5 is -CN, -CF3, -COOR2, -CONH2, -CO-NHR2 or -CONR22, R3 and R4 are a direct bond or each is H, or R3 is H and R4 independently has the meanings of R5, or R3 and R4 together are -CH2-NR6-CH2-, -CH2-NR6-CO- or -CO-NR6-CO- wherein R6 is the radical of a removable protecting group, or wherein further R1 is a radical of formula III                                 (III).            Insecticides or fungicides can be prepared from the compounds of formula I.
Patent CA-1336796-C (CA)
Inventor: VANRENS RUSSELL J
IPC: B22C9/04
Filed: 1989-04-28
Granted: 1995-08-29
Abstract: A lost foam casting assembly comprising a foam pattern, a foam sprue having a lower end connected to the foam pattern and also having an upper portion with an upper end, a mold flask containing the foam pattern and sand, the sand surrounding the foam pattern and at least a portion of the sprue, a sleeve surrounding the upper portion of the sprue and extending above and below the upper surface of the sand, and a sprue cup surrounding the sleeve for directing molten metal into the sleeve and onto the upper end of the sprue.
Patent CA-1333510-C (CA)
Title: Resin composition
Inventor: KAGAYA KATSUO
IPC: C08F299/02
Filed: 1989-04-28
Granted: 1994-12-13
Abstract: A resin composition comprising (a) 40 to 80% by weight of a resin comprising an oligomer having a number average molecular weight of 900 to 3,000 in terms of polystyrene equivalent obtained by gel permeation chromatography and having two or more terminal (meth)acrylate groups and an unsaturate polyester, and (b) 20 to 60% by weight of methyl (meth)acrylate monomer.
Patent CA-1320717-C (CA)
Title: Air control system for air bed
Inventor: WALKER ROBERT A
IPC: A47C27/10
Filed: 1989-05-05
Granted: 1993-07-27
Abstract: ABSTRACT OF DISCLOSURE         An air supply and control apparatus has an air pump to supply air under pressure to air mattresses of an air bed.  A hand control having a pair of valves functions to control the operation of the air pump to supply air to the air mattresses and vent air from the air mattresses.          A second embodiment of the air supply and control apparatus has a motor driven impeller for supplying air under pressure to air mattresses.  Solenoids having two coils operate valves to allow air to flow to the air mattress or vent air from the air mattress to adjust the firmness of the mattress.  A normally closed switch is opened when the solenoid opens the valve.  The switch turns off one coil of the solenoid.  The other coil remains energized to hold the valve open.  Hand controls having switches are electrically coupled to the motor and solenoids to control the operation thereof.  A third embodiment of the air control apparatus has air pump and valve assembly operable with a hand control to selectively direct air under pressure to an air mattress and vent air from the air mattress.  The air mattress and air control apparatus is incorporated into a sofa bed.
Patent CA-1312173-C (CA)
Title: Process for the preparation of random copolymers
Inventor: TWU FRED C
IPC: C08F210/16
Filed: 1989-05-11
Granted: 1992-12-29
Abstract: PROCESS FOR THE PREPARATION OF RANDOM COPOLYMERS               Abstract of the Invention A process for the copolymerization of at least the two comonomers, propylene and ethylene, comprising contacting the comonomers in the gas phase in at least one reaction zone, under polymerization conditions, with a catalyst system comprising (i) a catalyst precursor, which includes magnesium, titanium, halogen, and as an inner electron donor, a mono- or polycarboxylic acid ester; (ii) a hydrocarbylaluminum cocatalyst; and (iii) as a selectivity control agent, a mono- or polycarboxylic acid ester, provided that the selectivity control agent is different from the inner electron donor, wherein the atomic ratio of aluminum to titanium is in the range of about 5 to about 300, with the proviso that the temperature in the reaction zone is in the range of about 50°C to about 110°C; the molar ratio of aluminum to selectivity control agent is in the range of about 0.5 to about 5; the propylene partial pressure is in the range of about 50 to about 450 psi; and the ethylene partial pressure is in the range of about 0.25 to about 25 psi.
Patent CA-1313298-C (CA)
Title: Hermetically sealed package having an electronic component
Inventor: ANDREWS DANIEL M
IPC: H01L21/48
Filed: 1989-07-13
Granted: 1993-02-02
Abstract: METHOD OF MAKING A HERMETICALLY SEALED PACKAGE HAVING AN ELECTRONIC COMPONENT          Forming a body of insulating material with a shelf and an opening therethrough with a plurality of electrical conductors extending from the shelf to the exterior of the body.  A plurality of tape automated bonding leads are placed in the opening in which the inner ends of the leads are connected together.  The outer ends of the leads are aligned with the electrical conductors and bonded thereto and the inner ends of the leads are disconnected from each other.  An electronic component is bonded to a bottom cover, aligned in the opening, and the inner ends of the leads are bonded to the electrical component.  The bottom and a top cover are sealably connected to the body enclosing the opening and the electronic component.
Patent CA-1295789-C (CA)
Title: Method and apparatus for altering fabric finishes
Inventor: BRASINGTON MITCHELL R
IPC: D06B11/00
Filed: 1989-07-20
Granted: 1992-02-18
Abstract: Abstract of the Disclosure Improved  methods  and  apparatus  are  provided  for altering fabric finishes on a garment to give the garment a "lived-in" or worn appearance before the garment is actually worn by the user.   According to the method of the present invention, a batch of garments is preferably stone-washed to generally fade and abrade the entire garment.  The garment is then inflated by passing air through an inlet port in the garment and by substantially sealing one or more exit ports in  the  garment  to  create  a greater  than  atmospheric pressure within the garment.   The inflated garment is then sprayed with a low-strength bleaching solution on selected exterior portion to provide an additional fading or worn appearance on those portions of the garment.   Thereafter, the garment 13 placed in a neutralizing liquid to chemically counteract the sprayed bleaching solution.   A plurality of garments  may  be each suspended  from  a  common  air  duct interconnected with a blower for providing air to inflate the  garments.   The  garment  is  preferably rotatable with respect to the air duct so that the garment may be easily rotated  by an operator to a selective  position  for  the spraying operation.
Patent CA-1339246-C (CA)
Inventor: MCINTYRE TIMOTHY J
IPC: B42B9/06
Filed: 1989-08-02
Granted: 1997-08-12
Abstract: Supply paper is provided at spaced longitudinal positions along one side with a repositionable adhesive.  A receptive coating comprised of a CF oil-based ink is applied at spaced longitudinal positions along the opposite side of the paper, the positions along opposite sides of the paper being out of registration one with the other.  The paper is cut into strips, assembled to form pads with the repositionable adhesive holding the paper strips one to the other at one end thereof.  A paper strip may be removed from the pad and flexed to form a band with opposite ends overlying one another with the adhesive in contact with the receptive coating.  The repositionable adhesive and receptive coating cooperate to provide enhanced adhesion.
Patent CA-1331553-C (CA)
Inventor: DROMARD ADRIEN
IPC: C01B33/141
Filed: 1989-09-29
Granted: 1994-08-23
Abstract: The invention relates to a stable and pumpable aqueous suspension of silica. This suspension is characterised in that it comprises: - a precipitated silica, - a bioresin, - a cationic surfactant chosen from the group of quaternary ammonium compounds and of sulphonium or phosphonium compounds. This suspension may be employed more particularly in papermaking.
Patent CA-1318917-C (CA)
Inventor: GIORDANO CLAUDIO
IPC: C07C69/736
Filed: 1989-09-29
Granted: 1993-06-08
Abstract: ABSTRACT OF THE DISCLOSURE         The invention provides optically active esters of alpha arylalkanoic acids of formula                     (C) in which Ar represents a monocyclic, polycyclic, or orthocon-densed polycyclic aromatic or heteroaromatic group having up to 12 carbon atoms in the aromatic system which group may be substituted by one or more halogen atoms, C1-C4 alkyls, C3-C6 cycloalkyls, benzyl, hydroxyl, alkali metal oxygen, C1-C4 alkoxy, C1-C4 alkylthio, C1-C4 haloalkyl, C1-C4 haloalkoxy, phenoxy, thienylcarbonyl and benzoyl; R represents a linear or branched C1-C4 alkyl radical; R1 and R2, which can be equal or different, represent a hydorxy, O-M+, OR3 or NR4R5, wherein R3 is C1-C24 alkyl, C3-C6 cycloalkyl, phenyl or benzyl; M+ is the cation of an alkaline metal; R4 and R5, which can be the same or different, represent a hydrogen atom, a C1-C4 alkyl, C5-C6 cycloalkyl, or a -(CH2)n-CH2OH where n is 1, 2 or 3 or R4 and R5 together form a -(CH2)m- group where m is 4 or 5 or a -CH2-CH2-R7-CH2-CH2- group where R7 is an oxygen atom, an NH or a N-(C1-C4) alkyl group and R6 is OH, Cl, Br, I or acyl radical which are intermediates in the production of optically active alpha-aryl alkanoic acids.
Patent CA-1339885-C (CA)
Inventor: MARTINEZ EDUARDO
IPC: G09G1/14
Filed: 1995-03-20
Granted: 1998-05-26
Abstract: A method and apparatus for minimizing the visual degradation of a typeface wherein the need for the manual input of skilled technicians is eliminated and the important visual components of each character and the relationship of the visual components of each character with the other characters of the typeface are preserved. The characters are analyzed to determine the visual components in the horizontal and vertical direction which comprise each character and the priority of adjustment. Using the visual components determined, starting with the highest priority component, the coordinates describing each character are adjusted according to rules which are dependent upon whether the strokes formed are oriented in the horizontal or vertical direction. The adjustment of the lower priority visual components isdependent on the previously aligned components. The important visual components in the diagonal direction are subsequently adjusted in accordance with similar sized visual components in the horizontal and vertical direction wherein the dimensions of the adjusted horizontal and vertical components are maintained.