baber/WOPTO huggingface dataset:
Patent CA-2027922-C (CA)
Title: Ferroelectric ceramics
Inventor: USHIDA YOSHIHISA
IPC: C04B35/49
Filed: 1990-10-18
Granted: 1993-04-20
Abstract: ABSTRACT    The present invention relates to Perovskite ferroelectric ceramics comprising a Perovskite solid solution represented by the formula Pb1-(3/2)aMa{Ni1/3Nb2/3)1-b(Zn1/3Nb2/3)b}xTiyZrzO3 wherein M is at least one element selected from the group consisting of La and Nd, x + y + z is 1, said Perovskite solution containing MnO2.      When compared with known ferroelectric ceramics, the ferroelectric ceramics according to the invention has a larger piezoelectric constant d and also a sufficiently high Curie temperature Tc, while having a mechanical quality factor Qm practically equal to that of the known ferroelectric ceramics.  Accordingly, the ferroelectric ceramics according to the invention exhibit excellent characteristics when used in application such as a driving part of an actuator, for example, of an ultrasonic motor where mechanical resonance of the material used is utilized.
Patent CA-2036754-C (CA)
Title: Method and system for controlling radio channels to be used for cordless telephone systems
Inventor: NAKAYAMA YASUNOBU
IPC: H04W84/08
Filed: 1991-02-20
Granted: 1995-02-21
Abstract: In  a  key  telephone  system,  a  plurality  of cordless telephone systems each including a pair of a connecting equipment 4 or 6 and a movable telephone set 5 or 7 are connected to a key service unit 3 as extension telephone sets.   The key service unit 3 designates each speech channel of mutually different frequency selected from a plurality of predetermined speech channels as each speech channels to be used for each cordless telephone system, and indicates each designated speech channel to the  connecting  equipment  4  or  6  of  each  cordless telephone  system.   In each cordless  telephone  system, each  designated  speech  channel  is  indicated  from  the connecting equipment 4 or 6 to the movable telephone set 5 or 7 using a predetermined control channel.  After each designated  speech  channel  has  been  indicated  to  each movable  telephone  set  5  or  7,  the  designated  speech channel  is  mainly  used  for  each  cordless  telephone system.   Since the frequency of each designated speech channel for each cordless telephone system is different from each other, it is possible to simultaneously process outgoing  or  incoming  calls  of  the  plural  cordless telephone systems.
Patent CA-2042425-C (CA)
Inventor: SHAPIRO STUART
IPC: C12N9/88
Filed: 1991-05-13
Granted: 2000-07-11
Abstract: A process is described for stereospecifically hydrating crotonobetaine to L-(-)-carnitine via the action of an enzyme produced by four new strains of Proteus mirabilis (NRRL B-18480, NRRL B-18481, NRRL B-18482, and NRRL B-18483) in biotransformation media containing from 10 to 12% (w/v) crotonobetaine inner salt.
Patent CA-2043350-C (CA)
Title: Multiscreen projector apparatus
Inventor: MIYASHITA YOSHIAKI
IPC: G03B21/02
Filed: 1991-05-28
Granted: 1995-12-12
Abstract: A cabinet (2) providing one projector unit has a side wall formed with a projecting portion (21) accommodating a projector (1) therein, and another side wall opposed to the side wall and formed with a recessed portion (22) shaped in conformity with the shape of the projecting portion (21).  One or a plurality of reflect-ing mirrors (4), (41) are arranged within the cabinet (2) for flexing an optical path (9) extending from the projector (1) to a screen (3).  A plurality of such cabinets (2) are assembled into a multiscreen projector apparatus by engaging the projecting portion (21) of each cabinet (2) in the recessed portion (22) of another cabinet (2) adjacent thereto.
Patent CA-2046704-C (CA)
Title: Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure
Inventor: FENNEMA ALAN AUGUST
IPC: G11B7/125
Filed: 1991-07-10
Granted: 1995-09-26
Abstract: An  optical  disk  recorder  is  capable  of  operating  with diverse types of optical media.   An device initialization procedure  is  repeated  for  each  receipt  of  each  optical medium.  Such procedure includes moving a objective lens to an extreme radial position, defocussing the lens at a most remote  position,  then  calibrating  the  laser  circuits  to ensure that the emission of radiation from the laser will not  inadvertently  destroy  signals  recorded  on  the  just received medium.   Then the medium type  is read from the medium  and  based  upon  the  type  indication,   various additional calibrating procedures are followed and different sources  of  laser  control  values  are  used  for  signal exchanging  operations  between  the  recorder  and  received optical medium.
Patent CA-2059894-C (CA)
Title: Gasification-type combined electric power generating plant
Inventor: ISHIGAMI SHIGEYASU
IPC: F02C3/28
Filed: 1992-01-27
Granted: 1996-01-30
Abstract: A gasification-type combined electric power generating plant comprises a gasifying furnace, a heat exchanger, a gas purifying device, a gas turbine, and a gas turbine compressor, an exhaust heat recovering boiler, and a steam turbine.  To decrease a boosting power, increase the exergy of a recovered heat, and improve the overall efficiency of the plant, the plant further includes a regenerative heat exchanger for cooling an air-like gas bled from the gas turbine compressor, a cooler for cooling the air-like gas passed through the regenerative heat exchanger, a primary air booster for boosting a part of the air-like gas passed through the cooler to deliver a primary air, a secondary air booster for boosting the remainder of the air-like gas passed through the cooler to deliver a secondary air, and a passage through which the secondary air passed through the secondary air booster is supplied to the regenerative heat exchanger where the secondary air is heated and then to the gasifying furnace.
Patent CA-2060071-C (CA)
Title: Rear motor vehicle alerting bright light dimming signal and control system
Inventor: ADELL ROBERT
IPC: B60Q1/50
Filed: 1992-01-27
Granted: 1998-07-07
Abstract: A rear motor vehicle alerting bright light dimming signal and control system for alerting a driver of a vehicle behind a signalling vehicle to dim his bright lights.  The signalling system is low in cost, improves vehicle safety, promotes driver courtesy and is adaptable to all motor vehicle styles and models.  A control system permits the signalling system to operate only when the stop lights and turn signal lights of a signalling vehicle are inoperative.  The signal system comprises one or more flashing lights mounted at the rear of a vehicle and a control circuit for operating the lights.  In one aspect of the invention, a signalling light is mounted on a rear package tray in a common housing with an "eye level" stop light and, when operative, transmits a flashing high intensity beam of colored light to alert the driver of the rear vehicle.   The control system has two states, a normally off state and an operating state wherein the signal light flashes for a predetermined time.  In an alternate embodiment the signal lights are automatically activated by a bright light from a rear vehicle.
Patent CA-2062191-C (CA)
Title: Pneumatic tube system
Inventor: GROSSWILLER LEO J
IPC: B65G51/34
Filed: 1992-03-03
Granted: 1998-06-30
Abstract: A pneumatic transfer terminal adapted to receive and dispatch a non-captive, tubular article carrier of predetermined length from and to a single pneumatic transfer tube. The terminal includes a carrier receiver having an internal chamber dimensioned to receive an article carrier therein and to position the carrier in operable alignment with the transfer tube. The carrier receiver includes a first opening for communicating the chamber with the transfer tube and a second opening for insertion and removal of the carrier into and from the chamber. A blower assembly is attached to the transfer tube and is operable to create a vacuum therein. A gate mechanism is operable to open and close the second opening. The gate means includes a generally planar gate movable between a first position where the gate mechanism covers the second opening and a second position wherein the gate is removed from the second opening. An actuator connects the motor to the planar gate.
Patent CA-2064206-C (CA)
Title: Immersible biological filter for the purification of waste water
Inventor: GILSON ROBERT
IPC: C02F3/08
Filed: 1990-07-19
Granted: 2002-02-26
Abstract: According to the present invention, the im-mersible biological filter for the purification of waste water is characterized in that it is comprised as bacterial support an assembly of ribbons essen-tially continuous and made of plastic material ar-ranged in a spiral around two supporting members.     The waste water is brought (at 101) and discharged into the container forming the biological filter. The hanks (103) of rubans are arranged vertically.
Patent CA-2069876-C (CA)
Title: An apparatus for filtering suspensions and a method of operating the apparatus
Inventor: FRYKHULT RUNE
IPC: B01D33/21
Filed: 1991-02-18
Granted: 2000-05-23
Abstract: A disc filter for filtering mat forming suspensions, such as fibre pulp suspensions, is provided with a hollow shaft for receiving a flow of fine fraction created by hydrostatic pressure difference between the suspension to be filtered and the fine fraction in the hollow shaft. According to the invention, each disc (7) is provided with a number of fine fraction chambers (11) communicating with the interior of the hollow shaft via respective holes (12) in the circumferential wall (5) of the shaft. Each chamber (11) is arranged, such that it functions as a dropleg during movement upwards, with the result that the coarse particle (fibre) concentration of the created coarse fraction is increased.
Patent CA-2070862-C (CA)
Inventor: HAYES EUGENE G
IPC: B60T11/04
Filed: 1992-06-09
Granted: 1994-10-18
Abstract: A mechanism for coupling a vehicle control such as a foot pedal to a vehicle component such as a brake.  The mechanism includes a rod member coupled to shift the component between operating modes, and having a rounded end portion.  The control includes a recessed portion in abutment with the rounded end portion of the rod.  A spring biases the rod into and against the recessed portion such that the rod is supported or carried by the recessed portion.  Guides are formed in the vehicle frame for aligning the rod with the recessed portion during the process of manufacture.
Patent CA-2079692-C (CA)
Title: Novel 7-substituted-9-substituted amino-6-demethyl-6-deoxytetracyclines
Inventor: HLAVKA JOSEPH J
IPC: C07D207/323
Filed: 1992-10-02
Granted: 2004-06-08
Abstract: Novel 7-substituted-9-(substituted amino)-6-demethyl-6-deoxytetracycline compounds having activity against a wide spectrum of organisms including organisms which are resistant to tetracyclines are disclosed. Also disclosed are intermediates and methods for making the novel compounds of the present invention.
Patent CA-2080088-C (CA)
Inventor: CUNNINGHAM DONALD M
IPC: H05B3/74
Filed: 1992-10-07
Granted: 1999-03-30
Abstract: An electric range (R) has a glass/ceramic cooking top (S) upon which rests a cooking utensil.  Electrical heating apparatus (10) has an electrical resistance heating element (12) to which an electrical current is supplied.  This causes the heating element to generate heat.  A heat sink (16) is interposed between the heating element and the cooking top for absorbing heat energy from the heating element and for spreading the energy under the surface area of the top by conduction.  The heat sink is of an electrically insulative, translucent, aluminum nitride material or similar high thermal conductivity material.  An insulation cake (20) supports the heating element and heat sink adjacent an underside of the cooking top and provides both electrical and thermal insulation.  A pan (24) supports the insulation cake, the heating element (12) and the sink (16) in intimate contact with each other and the underside of the cooking top for maximum heat transfer by conduction.  The heating element also functions as a temperature sensor responding with a change in electrical resistance to a change in temperature of the heating element as influenced by the cooking process.  The change in electrical resistance is the input for an electronic control which prevents excessive temperature of the glass/ceramic cooking top.
Patent CA-2087857-C (CA)
Title: Precipitated calcium carbonate
Inventor: BLEAKLEY IAN STUART
IPC: C01F11/18
Filed: 1991-09-06
Granted: 1998-11-03
Abstract: The calcium carbonate is prepared by: a) slaking quicklime in an aqueous medium; b) passing the suspension of calcium hydroxide through a sieve; c) converting the calcium hydroxide into a finely dispersed condition; d) carbonating and neutralising the suspension of finely dispersed slaked lime formed in step (c) using a gas comprising carbon dioxide; and e) separating the precipitated calcium carbonate formed in step (d) from the aqueous medium in which it is suspended.
Patent CA-2091373-C (CA)
Title: Process for the production of anhydrosugars and fermentable sugars from fast pyrolysis liquids
Inventor: MAJERSKI PIOTR
IPC: C13K1/02
Filed: 1993-03-10
Granted: 1997-09-30
Abstract: A process is described for the production of anhydrosugars, such as levoglucosan (1,6-anhydro-.beta.-D-glucopyranose), from liquids obtained by the fast thermal pyrolysis of pretreated lignocellulosics or celluloses.  In this process, the pyrolytic liquids containing the anhydrosugars are produced with a substantially reduced amount of lignin-derived components by using as feedstock materials which have been previously delignified and then pretreated, or by preferential oxidation of the lignin fraction of a pretreated biomass during pyrolysis.  The preparation from pretreated biomass of pyrolytic liquors from which the lignin derived chemical products of fast pyrolysis are absent or in low concentrations permits simpler and more economical recovery of crystalline levoglucosan and other anhydrosugars, or a more economical preparation of readily fermentable aqueous sugar solutions therefrom.  A new procedure for the recovery of crystalline levoglucosan from such solutions is also described.
Patent CA-2095392-C (CA)
Inventor: HALL GEORGE R
IPC: G01N27/406
Filed: 1993-05-03
Granted: 1999-10-19
Abstract: In an oxygen analyzer for an industrial process, an automotive type oxygen sensor has a sensor element assembly with an outer thin walled shield containing insulation and surrounding the sensor element of the automotive type oxygen sensor.
Patent CA-2112129-C (CA)
Title: Oxazolidine derivative and pharmaceutically acceptable salt thereof
Inventor: YAMADA HARUO
IPC: C07D/
Filed: 1993-04-28
Granted: 1997-10-07
Abstract: An oxazolidine derivative represented by general formula (I), a salt thereof, a process for the production thereof, an antihyperlipidemic containing the same as the active ingredient, and a method of curing hyperlipidemia by administering the came, wherein R1, R~ and R3 represent each H, optionally halogenated alkyl, optionally halogenated alkoxy, OH, halo, NO2, optionally acetylated or alkylated amino, COOH, alkoxycarbonyl, CN, alkanoyl or 2-oxazolyl, provided that R1 and R~ may be combined with each other to represent -(CH2)p- or -O-(CH2)q-O-, wherein p represents 3 to 5 and q represents 1 to 3, thus forming a cyclic structure; m and n represent each 0 or 1; R4 and R5 represent each H or alkyl; X represents C or N; Y represents CH2OH, CHO or COOR6, R6 representing alkyl, benzyl or H; A represents alkylene, carbonyl or sulfonyl; B represents alkylene; E represents optionally halogenated alkylene or alkenylene; and Z represents O or S; provided that the case where n is O, m is 1 and Y is CH2OH and the case where n is O and Y is COOR6, R6 being alkyl, are excluded.     (see fig. I)                 (I)
Patent CA-2112495-C (CA)
Title: Mobile liquid transferring apparatus
Inventor: DAWSON DAVID W
IPC: B62B1/26
Filed: 1992-06-09
Granted: 2002-07-02
Abstract: The invention is a mobile apparatus (10) for transporting a liquid. The apparatus includes a wheeled frame (12) and a pump (30), with a suction and a discharge port, that is supported by that frame. A liquid storage container (42) is supported upon the wheeled frame. A fitting (50) secured to the liquid storage con-tainer includes an integral liquid head (62). The apparatus fur-ther includes an inlet transfer line (76) between the integral liquid head and the suction port of the pump. Finally, the apparatus in-cludes an outlet transfer line (90) from the discharge port of the pump for transfer of the liquid to a remote container (82).
Patent CA-2114327-C (CA)
Title: Haptens, tracers, immunogens and antibodies for immunoassays for propoxyphene
Inventor: DUBLER ROBERT E
IPC: C07K16/00
Filed: 1992-07-22
Granted: 2003-04-22
Abstract: Disclosed is a substantially optically pure hapten, useful in an immunoassay for dextropropoxyphene and/or nordextrop-ropoxyphene. The hapten corresponds to a specified structural formula (IX).  Also disclosed is an immunogen derived from the hapten as well as an antibody raised in response to an immunogen derived from the hapten. Also disclosed is a fluorescent tracer derived from a substantially optically pure compound corresponding to the hapten, the tracer being useful in an immuoassay for dextropropoxyphene and/or nordextropropoxyphene. Also disclosed is an improved immunoassay for determining dextropro-poxyphene and/or nordextropropoxyphene in a biological sample involving a step of contacting the sample with antibodies raised in response to the immunogen. Also disclosed is a fluorescence polarization immunoassay (FPIA) for determining dex-tropropoxyphene and/or nordextropropoxyphene involving a step of contacting the sample with antibodies raised in response to the immunogen, and/or involving a step of contacting the sample with a fluorescent tracer.
Patent CA-2120461-C (CA)
Inventor: REYNOLDS AARON R
IPC: G06F17/30
Filed: 1994-03-31
Granted: 2009-09-22
Abstract: An operating system provides a common name space for both long filenames and short filenames. In this common namespace, a long filename and a short filename are provided for each file. Each file has a short filename directory entry and may have at least one long filename directory entry associated with it. The number of long filename directory entries that are associated with a file depends on the number of characters in the long filename of the file. The long filename directory entries are configured to minimize compatibility problems with existing installed program bases.
Patent CA-2120813-C (CA)
Title: Process for producing polyolefins and polyolefin catalyst
Inventor: RAZAVI ABBAS
IPC: C08F4/6392
Filed: 1994-04-07
Granted: 2006-07-25
Abstract: The present invention provides a process for preparing polyolefins having a multimodal or at least bimodal molecular weight distribution by contacting in a reaction mixture under polymerization conditions at least one olefin and a catalyst system comprising a supported catalyst-component comprising an alumoxane and at least two metallocenes containing the same transition metal and selected from mono, di, and tri-cyclopentadienyls and substituted cyclopentadienyls of a transition metal and wherein at least one of the metallocenes is bridged and at least one of the metallocenes is unbridged.
Patent CA-2120993-C (CA)
Title: Detecting biological activities in culture vials
Inventor: BERNDT KLAUS W
IPC: C12Q1/02
Filed: 1994-04-11
Granted: 2000-05-30
Abstract: An apparatus for detecting microorganisms in a plurality of sealable containers adapted to sustain microorganism growth includes a single light source such as a laser with a two-dimensional laser deflector directing an output beam component from the laser serially towards each of the containers. A sensor is spread along an inner surface of the containers. The selective emission of a sensor is monitored to determine whether biological activity is present in a container. A disclosed embodiment includes the use of a high-frequency modulator and decay time sensors. Biological activity is determined by monitoring the decay time of the sensors.
Patent CA-2121771-C (CA)
Title: Fluids for oilfield industry, their preparation and their use in drilling, completion and well treatment operations, and in fracturing and matrix treatment operation
Inventor: MAROY PIERRE
IPC: C09K8/03
Filed: 1994-04-20
Granted: 2006-08-22
Abstract: The particulate phase of fluids according to the present invention comprises particles which have specifically adapted size ranges or granulometries.      All the essential properties of fluids and their cost are very clearly improved.     Application to all the well operations in oil wells or the like, to matrix treatment and the like.
Patent CA-2123830-C (CA)
Inventor: MORIMOTO HIROMASA
IPC: H01M8/06
Filed: 1994-05-18
Granted: 2002-08-20
Abstract: The method controls a differential pressure of a plate reformer installed in a fuel cell power generation system.     In the power generation system, a raw material gas is reformed to a fuel gas in the plate reformer, the fuel gas is fed to an anode of a fuel cell, an anode exhaust gas from the anode is fed to a combustion chamber of the plate reformer, a combustion exhaust gas from the combustion chamber is fed to a cathode of the fuel cell together with an air, and part of the air is fed to the combustion chamber. The method includes the steps of placing the plate reformer in a pressure vessel, maintaining a pressure of a cathode exhaust gas to a constant value, feeding part of the air to be fed to the cathode and all of the anode exhaust gas into the combustion chamber to make a pressure of the air and that of the anode exhaust gas substantially the same so as to make a pressure of the reforming chamber arid that of the combustion chamber substantially the same, and forming an opening on a line which feeds the air into the combustion chamber to allow the air to enter the pressure vessel so as to make the pressure of the reforming chamber, that of the combustion chamber and that of the pressure vessel substantially the same.
Patent CA-2137243-C (CA)
Title: Process for the production of n-.beta.-hydroxyalkyl-tri-n-carboxyalkyl -1,4,7,10-tetraazacyclododecane and n-.beta.-hydroxyalkyl-tri-n-carboxyalkyl-1,4,8,11- tetraazacyclotetradecane derivatives and their metal compllexes
Inventor: TILSTAM ULF
IPC: A61K31/555
Filed: 1993-05-28
Granted: 2005-09-20
Abstract: A process for the production of N-.beta.-hydroxyalkyl-tri-N-carboxyalkyl-1,4,7,10-tetraazacyclododecane and N-.beta.-hydroxyalkyl-tri-N-carboxyalkyl-1,4,8,11-tetraazacyclotetra-decane derivatives and their metal complexes is described.
Patent CA-2137394-C (CA)
Title: Grate assembly for a fluidized bed boiler
Inventor: KINNI JOUNI
IPC: F23C10/20
Filed: 1994-12-06
Granted: 2000-02-22
Abstract: The invention relates to a grate assembly for a fluidized bed boiler. It comprises a number of parallel sparge pipes (1) or the like extending side-by-side in a substantially horizontal plane and provided with elements (3) for supplying fluidizing air from within the sparge pipes (1) or the like into a combustion chamber (T) located above the grate assembly. The discharge of some of the fluidized bed materials is effected through am aperture system (2) between the sparge pipes (1) or the like into a receiver unit (4) fitted below the grate assembly. The sparge pipes (1) or the like are provided with a cooling medium circulation by means of a duct assembly (9).
Patent CA-2140038-C (CA)
Inventor: INNES ROBERT A
IPC: B01J29/22
Filed: 1993-07-16
Granted: 2004-02-17
Abstract: A process for regenerating a coke contaminated reforming catalyst comprising platinum on a molecular sieve, said process consisting essentially of contacting said catalyst with a halogen-free oxygen-containing gas at a temperature of less than 780°F for a sufficient period of time such that the aromatization activity is restored to within 20°F of the activity said catalyst possessed at the start of the previous run cycle.