baber/WOPTO huggingface dataset:
Patent CA-2003206-C (CA)
Inventor: KOVACS STEPHEN G
IPC: A61F2/06
Filed: 1989-11-17
Granted: 1996-07-30
Abstract: A  method  for  fabricating  human  tissue prosthesis.  The method  produces  a prosthesis  that has  mechanical compliance properties  similar  to  that of  body  tissue.  The prosthesis fabrication  method  utilizes,   for  example,   a polyurethane urea-linked  block copolymer system which in the cured state is a  thermoset elastomer which has  lumen surface qualities which are essentially optically flat.  The formulation is essentially a   single  a   single  step   process.  A  clean   mandrel  is horizontally  clasped in the jaws of a variable speed motor and slowly  rotated.  The  pre-polymer  solution is  placed  on the rotating  mandrel and thickness adjusted by a mechanical wiper.   The rotating mandrel having pre-polymer of desired thickness is placed  in  a sub-atmospheric  environment to  remove dissolved gasses  and  permitted to  initially cure  while rotating.  The final  cure  is  achieved  in  a  sub-atmospheric  environment.          Removal  of the cured polymeric  prosthesis from the mandrel is achieved   by  placing  same  in   an  aqueous  solution  at  a temperature  less  than  the final  cure  temperature  and then slipping  the prosthesis from  the mandrel.  The combination of polymer  system formulations and fabrication techniques has led to    the   development   of    vascular   grafts   which   are non-thrombogenic,   non-hemolytic,  and which have a compliance factor   closely   matching   its   correspondent   physiologic counterpart.
Patent CA-2003752-C (CA)
Inventor: DATTA PABITRA
IPC: H01J29/20
Filed: 1989-11-23
Granted: 2001-01-16
Abstract: The method of surface-treating dry-powdered phosphor particles for use in manufacturing a luminescent viewing screen for a CRT, to control the triboelectric charge characteristics of the phosphor particles, includes the steps of dissolving a suitable quantity of a polymeric coupling agent in a suitable solvent to form a mixture,surface-treating the phosphor particles by adding them to the mixture to provide a coating of the the coupling agent thereon, and then drying the surface-treated phosphor particles. The resultant dry-powdered surface-treated phosphor particles are used to make screen. The coupling agent controls the triboelectric charge characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.
Patent CA-2009597-C (CA)
Title: Electronic circuit breaker using digital circuitry having instantaneous trip capability
Inventor: JACOB PHILIPPE LESLIE
IPC: G01R31/02
Filed: 1990-02-08
Granted: 1998-11-24
Abstract: Instantaneous trip capability is provided to an electronic circuit breaker, which is of the type that generates trip signals by accumulating squares of power line current samples and thresholds the accumulation results. Samples of power line current are taken directly from the current transformer and analog-to-digital converter cascade generating them. The analog-to-digital converter is of an oversampling type, using a delta-sigma modulator. The samples are threshold detected against a prescribed threshold value without previous squaring, integration and detection. The threshold detector result is checked for two consecutive overcurrent indications before an instantaneous trip signal is generated.
Patent CA-2017573-C (CA)
Title: 4-(hydroxydiphenylmethyl)-1-piperidylphenylalkane derivatives as antihistamines and a method of treatment of an allergic response
Inventor: PEIN ECKHARDT
IPC: A61K31/445
Filed: 1990-05-25
Granted: 1996-05-21
Abstract: 4-(Hydroxydiphenylmethyl)-1-piperidyl-phenylalkane derivatives as antihistamines of the formula   and  pharmaceutically  acceptable  salts  of  such derivatives are disclosed in which n is an integer between 0 and 2, R1 - R5 represent,  independently of one another, hydrogen and at least one of them represents a linear or branched alkyl radical with 1 - 4 carbon atoms, a C1-C3-alkoxy radical or a hydroxyl radical. A method  of  treatment  of  allergic  response  in mammals is also disclosed.
Patent CA-2017935-C (CA)
Title: Digital transmission system, transmitter and receiver for use in the transmission system, and record carrier obtained by means of the transmitter in the form of a recording device
Inventor: LOKHOFF GERARDUS CORNELIUS PET
IPC: G10L19/02
Filed: 1990-05-30
Granted: 2002-10-22
Abstract: Digital transmission system, transmitter and receiver for use in the transmission system, and record carrier obtained by means of the transmitter in the form of a recording device. The transmitter (1) in a digital transmission system derives from a wideband digital signal S BB having a sample frequency F s a second digital signal appearing on its output (7), which signal comprises successive frames, each frame being made up of information packets (IP) each having a length of N bits. The number of information packets (B) in a frame is determined as follows: If P in the formula (See formula I) is an integer, where BR is the bit rate of the second digital signal, n s is the number of samples of the wide-band digital signal, S BB in which the information, after having been converted into the second digital signal, is present in one frame of the second digital signal, the number of information packets B in a frame is equal to P. If P is not an integer, B is equal to P' for a number of frames, P' being the next lower integer following P, whereas B for the other frame is equal to P'+1, in such a way that the average frame rate of the second digital signal is substantially equal to F s/n s. A frame comprises a first frame portion (FD1), a second frame portion (FD2), and a third frame portion (FD3). The first frame portion contains synchronising information and system information. The second frame portion contains allocation information, and the third frame portion contains samples of and, if applicable, scale-factor information for the second digital signal.
Patent CA-2018035-C (CA)
Title: Liquid herbicidal agents
Inventor: SCHUMACHER HANS
IPC: A01N39/02
Filed: 1990-06-01
Granted: 2000-08-29
Abstract: The present invention relates to liquid herbicidal agents in the form of emulsifiable concentrates (EC) or concentrated emulsions (EW), which, in addition to 1 - 40% by weight of the active compound diclofop-methyl (I), fenoxaprop-ethyl (II) or the optically active isomer (D+) thereof fenoxaprop-P-ethyl (III), contain, as surfactants, 0.5 - 30% by weight of (C10-C18-fatty alcohol polyglycol ethers or (C8-C9)-alkylphenyl polyglycol ethers which are ethoxylated with 6 - 10 mol of ethylene oxide, and in the case of EC formulations 0.5 - 7% by weight of calcium (C8-C14)-alkylbenzenesulfonate, and in the case of EW formulations, as a dispersing agent, 0.5 - 7% by weight of an ethylene oxide-propylene oxide-ethylene oxide block copolymer phosphorylated in the alpha- and omega-position, or a salt thereof, in addition to the customary formulation constituents.      Compared with the known active compound formulations, these have significantly increased activities and improved mixing properties with water and other commercially available preparations containing active compounds.
Patent CA-2018043-C (CA)
Inventor: CUNNINGHAM DONALD J
IPC: B60R21/26
Filed: 1990-06-01
Granted: 1992-05-12
Abstract: ABSTRACT OF THE DISCLOSURE      An impact extruded perforated aluminum housing contains a two-stage gas generator having a perforated bulkhead positioned between the stages.  Each stage includes a combustion chamber having an igniter and pyrotechnic charge therein with cooling and filter screens surrounding the combustion chamber.  The igniter of the first stage is fired by a squib responsively to an external electrical signal.  A rupturable barrier and a ball valve associated with the bulkhead control the flow of gas through the bulkhead and provide mechanical timing for ingition delay in the firing of the second stage after the first stage has been fired, and also provide pressure control after ignition of both stages to prevent repressurizing the first stage.  A rupturable foil barrier surrounding the combustion chamber in the first stage promotes a rapid rise in pressure therein and thus breakout sooner therefrom of gas to an airbag to be inflated.  A rupturable foil barrier surrounds the cooling and filter screens in the second stage and delays the breakout of gas therefrom to the airbag as the pressure rises, the rate of which pressure rise is less than that at which the pressure in the first stage rises.  The thickness of the foil barrier surrounding the combustion and filter screens is selected to be sufficiently less than that of the foil barrier surrounding the first stage combustion chamber so as to achieve substantial equalization of pressure in the first and second stages.
Patent CA-2019074-C (CA)
Inventor: MASUKO TAKAYUKI
IPC: G02B6/42
Filed: 1990-06-15
Granted: 1993-06-01
Abstract: Abstract of the Disclosure A photo-semiconductor module is disclosed wherein a reliable airtight condition can be obtained and an operability in assembly can be improved.  The photo-semiconductor module comprises a substrate carried in a casing, a photo-semiconductor chip mounted on the substrate, and a support member carried on the substrate and having an inclined face which is inclined by an angle of 45 degrees with respect to a surface of the substrate.  A semi-spherical lens is securely mounted on the inclined face of the support member, and an opening formed in a side wall of the casing is sealed airtight by a glass member while an upper portion of the casing is sealed airtight by a lid.  When an optical fiber is mounted onto the casing such that an end face thereof may be located in the opening in the side wall of the casing, the optical fiber and the photo-semiconductor chip are optically coupled to each other by way of the semi-spherical lens.
Patent CA-2022152-C (CA)
Title: Device for closing the containment well of a blood centrifugation cell in a centrifugal machine
Inventor: ROSSETTO GIORGIO
IPC: B04B7/02
Filed: 1990-07-27
Granted: 1995-08-22
Abstract: The invention discloses a device for closing the inlet of a containment well of a blood centrifugation cell in the body of a centrifugation machine.  A plate is supported at one end of the inlet of the containment well and is rotatable about the horizontal axis.  The plate has a pair of parallel pins extending perpendicularly from the surface.  A pair of half-lids are each pivotably supported at one end thereof by one of the pins, and have matable inner edges. The closing device  includes means  for  locking the half-lids  into a closure position, whereby said half-lids are rotated down-wardly against the inlet with the half-lids pivoted together, thereby closing the inlet of the containment well.
Patent CA-2024201-C (CA)
Title: S or z shaped groove pattern with mini blind grooves in an all season tire tread
Inventor: CONSTANT MICHEL
IPC: B60C11/04
Filed: 1990-08-29
Granted: 2000-05-02
Abstract: An all season type tire tread (11) comprises a plurality of laterally extending grooves (36) having curved portions adjacent to each lateral edge (TE1, TE2) of the tread, said curved portions extending in circumferentially opposite directions. Axially spaced zig-zag shaped grooves (4-8) extend circumferentially around the tread, every fourth leg of a zig-zag groove being coincident with a portion of a laterally extending groove (36) . Two legs adjacent to said fourth leg connect the laterally extending grooves to short semi-blind grooves (19) having their central portion coincident with every other fourth leg of the zig-zag shaped groove. The various grooves cooperate to define block elements (20-25), arranged in circumferential rows (30-25) and having the shape of an "S" or of a "Z". The two blocks can include a plurality of slots (50-53) and humps (29) can be located between neighboring blocks.
Patent CA-2036998-C (CA)
Title: Transmitting/receiving system between pbx's
Inventor: YAMASAKI HIROSHI
IPC: H04M1/00
Filed: 1991-02-25
Granted: 1995-01-03
Abstract: TRANSMITTING/RECEIVING SYSTEM BETWEEN PBX'S             ABSTRACT OF THE DISCLOSURE      A system having two PBX's each provided with a plurality of ISDN terminal equipment and having, between the PBX's, a plurality of analog junction lines and analog tie trunks provided at the two ends of the analog junction lines, wherein the PBX's are provided with analog junction line-ISDN converting units. The analog junction line-ISDN converting units are operative to transfer B-channel signals on a first analog junction line through the PBX network and the analog tie trunks and to transfer D-channel signals on a second analog junction line.
Patent CA-2049776-C (CA)
Title: Computerized gaming device
Inventor: RICHARDSON JOSEPH J
IPC: A63F13/00
Filed: 1991-08-23
Granted: 1999-05-04
Abstract: A computerized gaming device and method of playing casino-type games of chance wherein a player chooses a game to play from a plurality of games displayed on a video screen.  Each game has a finite number of chances per deal and a video display of the chances of winning when a deal is new, the percentage of winning chances remaining, the possible winning symbol combinations, and how many major winning chances remain.  In addition, a displayed record is kept of the player's cash credit with a print out of wins and losses when he quits to claim any winnings.  A provision is made to retire a deal or game whenever all the major winning chances have been won or when there are no more winning chances remaining.  The player can quit at any time or call for a new deal screen after playing at least one chance in a deal.
Patent CA-2050385-C (CA)
Title: Optical encoder
Inventor: NISHII KANJI
IPC: G01P3/486
Filed: 1991-08-30
Granted: 1994-11-22
Abstract: An optical encoder for detecting the position, speed, acceleration etc. of a moving or rotating object includes a light source, a lens for collimating light emitted from the source, and a transparent lens plate having an array of lenses formed therein at regular intervals and arranged to receive the collimated light.  A light detector located at the focal plane of the lenses on the side of the lens plate opposite the collimator lens.
Patent CA-2051333-C (CA)
Title: Polymerizable dental material
Inventor: RHEINBERGER VOLKER
IPC: A61K6/884
Filed: 1991-09-13
Granted: 1996-09-17
Abstract: An   improved   dental   material  based  on  a  polymerizable, ethylenically unsaturated monomer as binder and a catalyst for the cold-,  hot-  and/or  photopolymerization comprises, as inorganic filler, 20  to  90 wt-% of  a  mixture  of (A) amorphous, spherical   particles   with   a  refractive index of  1.50  to  1.58 and with an average primary particle size  of  0.1 to 1.0 microns, comprising silica and up to 20 mol-% of an oxide of at least one element  of  Groups I, II, III and IV of the periodic system, and (B)   quartz, glass ceramics or glass powder or mixtures thereof with a refractive index of 1.50 to 1.58 and with an average particle size of 0.5 to 5.0 microns.         Optionally small quantities of further fillers for increasing opacity and   for  controlling  the  viscosity  can  also  be included.
Patent CA-2051592-C (CA)
Title: Method and apparatus for the adsorption or chemisorption of gaseous components of a gas stream
Inventor: RUOFF GUNTER
IPC: B01D53/74
Filed: 1991-09-17
Granted: 2000-04-18
Abstract: A method and a device are provided for the adsorption and chemisorption, respectively, of gaseous components out of a gas stream. The dust return is achieved within a fabric filter. A combination comprising a nozzle and a trap shaft are disposed in the lower part of the fabric filter. Thereby both a changeable gas return as well as a dust return changeable and variable over wide ranges can be effected. This method is performed in a total filter plant with several filter chambers. One of the filter chambers is alternatingly cleaned for the discharge of the reaction products and simultaneously at least one filter chamber is operated in on-line operation.
Patent CA-2053166-C (CA)
Inventor: ROBIDA JAMES E
IPC: E05B55/00
Filed: 1991-10-10
Granted: 1996-08-13
Abstract: A cylindrical lock assembly (20) includes an inside subassembly (22) and an outside subassembly (24) which are assembled with a door (326) . Each subassembly (22,24) includes a rose liner (26,38), a return spring cassette (28,40), a rose (30,42), a lever (32,46) and a lever insert (34,48). The inside subassembly (22) also includes a turn button (36) and the outside subassembly (24) includes a cylinder lock (44).    A pair of mounting blocks (258,260) are contained within the chassis (50) to facilitate threaded connection of the chassis to the rose liners (26,38) which are assembled on respective sides of the door (326) and theerby provide an anti-rotation mounting for the chassis.
Patent CA-2058564-C (CA)
Title: Silico-aluminate pigments; process for preparing the same and their use as charges especially for paper
Inventor: PERSELLO JACQUES
IPC: C01B39/06
Filed: 1991-12-30
Granted: 2002-04-16
Abstract: New silicoaluminate-based pigments characterised in that they have a surface chemistry such that their number of cationic sites, expressed in micromoles/m<2> of surface, is greater than 0.05. They are prepared by a process consisting in treating a silicoaluminate suspension exhibiting a pH of not more than 8 with an organic or inorganic salt of an at least divalent metal, then in raising the pH of the mixture again to a value higher than or equal to 3.5, in separating the treated silicoaluminate from the said mixture, and then in drying the recovered silicoaluminate. The invention also relates to the use of the said pigments as fillers for paper.
Patent CA-2058736-C (CA)
Inventor: BEASLEY ANDREW S
IPC: H04W16/26
Filed: 1992-01-03
Granted: 1995-02-14
Abstract: An RF repeater arrangement for a cordless telephone system employs a co-axial cable to connect a base station to RF repeaters having overlappin coverage zones. A DC power supply at the base station supplies DC power through the co-axial cable to DC power pickups in the RF repeaters for powering the latter.
Patent CA-2062671-C (CA)
Title: Auxiliary oxygen burners technique in glass melting crossfired regenerative furnaces
Inventor: CASTELAIN ROBERT JULES
IPC: C03B5/237
Filed: 1992-03-11
Granted: 1996-04-02
Abstract: The invention relates to the employment of at least one oxygen-fuel burner in a particular manner in glass melting cross-fired regenerative furnaces.  By operating oxygen-fuel burners positioned in particular places in a cross-fired regenerative furnace in an appropriate manner, the glass melting can be accomplished without disrupting the flame momentum of the air-fuel burners, thereby improving the efficiency of the glass melting and increasing the production of the glass products.
Patent CA-2073929-C (CA)
Inventor: KOU YUKARI
IPC: H04B7/212
Filed: 1992-07-15
Granted: 1997-02-11
Abstract: In a random access communication system comprising a central station and user stations, each user station transmits a packet to the central station on a randomly selected timeslot of a time-division multiple access channel and defines a plurality of "minislots" within the selected timeslot and transmits a burst on one of the minislots. The central station monitors the defined monislots to detect the burst transmission, and assigns as many timeslots as required if more than one burst transmission is detected within a timeslot interval. A slot assignment signal is sent from the central station to the user stations containing a negative acknowledgment of the transmitted packet. The user station from which the packet was transmitted is responsive to the negative acknowledgment to select one of the assigned timeslots and retransmit to the central station a copy of the packet on the selected assigned timeslot.
Patent CA-2074193-C (CA)
Title: Metal-powder blend
Inventor: DAUTZENBERG NORBERT
IPC: C22C33/02
Filed: 1990-09-28
Granted: 2003-09-16
Abstract: The invention is based on the object to provide a metal powder mixture which is simple to manufacture and makes possible the manufacture of high-strength.and wear-resistant cylinder parts with low dimensional deviations. This metal powder mixture is composed of a steel powder which is obtained by atomizing a melt and is mixed with 0.3-0.7% by wt. graphite, wherein the steel alloy powder is composed of (% by wt.) max. ~0.02 ~% C max. ~0.03 ~% Si 0.05 - 0.25 ~~% Mn 2.5 - 5.0 ~~% Ni 0.2 - 1.5 ~~% Mo the remainder being iron and the usual impurities and the mixture contains finely particulate Cu in an amount of 0.7-1.5% with the requirement that the ratio of quantities of Cu:graphite is in the range of 1.4-2.5.
Patent CA-2085892-C (CA)
Title: Perfume bases
Inventor: BAYDAR AHMET E
IPC: C11B9/00
Filed: 1992-04-11
Granted: 2002-12-10
Abstract: Perfume base, containing usnic acid and a perfumery raw material exhibiting an aromatic ring.
Patent CA-2091533-C (CA)
Title: Thermoplastic blends containing graft copolymers of polyacrylates as impact modifiers
Inventor: DENICOLA ANTHONY J JR
IPC: C08L21/00
Filed: 1993-03-11
Granted: 2000-10-31
Abstract: Disclosed are blends comprising a propylene polymer material grafted with a polymerizable monomer(s) of a polymer(s) having a Tg greater than 80°C, a propylene polymer material grafted with a polymerizable monomer(s) of a polymer(s) having a Tg less than 20°C, and optionally at least one other rubber modifier.
Patent CA-2094895-C (CA)
Title: Paperboard pallet
Inventor: KILPATRICK TED D
IPC: B65D19/00
Filed: 1993-04-26
Granted: 1998-01-27
Abstract: A paperboard pallet having a trapezoidal profile is disclosed, which comprises two outer stringers, an additional stringer therebetween, an upper sheet, and a lower sheet.  Each stringer has a trapezoidal profile.  The upper sheet is secured adhesively to a broad, upper end of each stringer.  The lower sheet has two outer flaps, each being folded upwardly and being secured adhesively to an outer wall of a respective one of the outer stringers.  The upper sheet may have two outer flaps, each being folded downwardly and being secured adhesively to such an outer wall.  Several alternative arrangements are disclosed, which include one wherein a lower base of a paperboard tray defines the upper sheet, another wherein a lower base of a paperboard carton defines the upper sheet, and others wherein blocks cut from such stringers replace the stringers.
Patent CA-2098988-C (CA)
Inventor: ANDERSON MICHAEL H
IPC: G11B20/18
Filed: 1992-02-18
Granted: 2003-02-11
Abstract: An efficient redundant array of mass storage devices includes a plurality of hard disk drives (22), a controller (20) or processor asso-ciated with each hard disk drive for calculating partial parity data and parity data; a host computer (12) and at least one bus (16) for communications between the host computer (12) and the plurality of hard disk drives (22). "The controller (20) of a drive calculates the par-tial parity which is the Exclusive Or function of the old data and the new data which is to be stored into the drive (22). New data is written to fhe location in the disk drive from which the old data was obtained.      The partial parity data is transferred to the Controller (20) of another drive which contains the old parity data for the location to which the new data was written; and that controller calculates the new parity which is the Exclusive Or of the partial parity and the old parity. The new parity is written to the location on that disk drive which formerly held the old parity: