baber/WOPTO huggingface dataset:
Patent CA-2008538-C (CA)
Title: Resin composition
Inventor: IZUMI MITSUHIKO
IPC: C08L55/02
Filed: 1990-01-25
Granted: 1998-06-02
Abstract: Disclosed is a resin composition which comprises:          (A) a melt-workable liquid-crystal polyester resin obtained by polymerizing components selected from the group consisting of a dicarboxylic acid represented by the general formula (a) HOOC - R1 - COOH, a diol represented by the general formula (b) HO          - R2 - OH, and an oxycarboxylic acid represented by the general formula (c) HO - R3 - COOH wherein R1, R2 and R3 are each a divalent aromatic hydrocarbon group, -R4-X-R5 (where R4 and R5 are each a divalent aromatic hydrocarbon group and X is O, S, SO2, CO, COO, alkylene or a bond), xylylene or a divalent aliphatic hydrocarbon group, or by homopolymerizing the oxycarboxylic acid;          (B) a polycarbonate resin having a recurring unit represented by the general formula:       wherein R6 and R7 are naphthalene, phenylene, halogen-substituted phenylene or alkyl-substituted phenylene and R8 and R9 are H or hydrocarbon not containing an aliphatic unsaturation or R8 and R9 together with the carbon atom to which they are attached form a cycloalkane group; and (C) a polyolefin and/or an olefinic copolymer, and the polyolefin and/or olefinic copolymer (C) is contained in an amount of 1 - 15 parts by weight per 100 parts by weight of a resin consisting of 95 - 5 wt% of the liquid-crystal polyester resin (A) and 5 - 95 wt% of the polycarbonate resin (B).  This resin composition is balanced between various physical properties including mouldability, heat resistance, impact resistance, dimensional stability and stiffness; and is useful for moulding articles.
Patent CA-2011800-C (CA)
Title: Process for the production of lithium diphenylphosphinobenzene-m-monosulfonate
Inventor: MAEDA TOSHIHIKO
IPC: C07F9/50
Filed: 1990-03-08
Granted: 1998-05-12
Abstract: There is provided an improved industrial process for the preparation of high-purity lithium diphenylphosphinobenzene-m-monosulfonate.  The preparation comprises reacting a sodium, potassium or calcium salt of diphenylphosphinobenzene-m-monosulfonic acid with lithium sulfate in an organic solvent.
Patent CA-2016864-C (CA)
Inventor: MARANCI ARUTUN
IPC: C08J7/043
Filed: 1990-05-15
Granted: 2001-07-10
Abstract: The invention relates to prepregs of fiber-re-inforced thermosetting resin that have a coating compris-ing thermoplastic particles on one or both outer surfac-es. Upon lamination of the prepregs into a composite, the layer comprising thermoplastic particles at the surface of the prepreg is formed into a discrete resin layer in the composite at the interface between fiber-re-inforced thermosetting resin layers. The laminated composite materials have improved toughness and impact strength due to the thermoplastic particulate material at the interface and yet the composites still retain desired mechanical properties under hot/wet conditions.
Patent CA-2027437-C (CA)
Title: Process for making green tea solids
Inventor: TSAI CHEE-HWAY
IPC: C08B37/00
Filed: 1990-10-12
Granted: 1997-04-29
Abstract: A process for isolating and purifying green tea solids  in good yield is described.  The process uses food approved solvents and  provides  flavanols with  less  green/grassy  flavor.   A  less bitter  and  less  astringent  flavanol  pectin  complex  is  also prepared using pectins, cellulose, gums or sugars.
Patent CA-2027649-C (CA)
Title: Supported enzyme
Inventor: BOSLEY JOHN ANTHONY
IPC: C12N11/08
Filed: 1990-10-15
Granted: 1996-01-16
Abstract: Lipase is supported on a carrier material, which may be hydrophobic or formed of an ion-exchange resin, the carrier having a substantial coating of a non-lipase protein such as ovalbumin, bovine serum albumin or sodium caseinate.  The protein is applied simultaneous with or prior to the lipase.  The protein coating improves the activity of the enzyme especially with respect to its use in esterification and inter-esterification reactions.
Patent CA-2029695-C (CA)
Title: Disk gang roadway conditioning tool
Inventor: SKIBSTED ERIC T
IPC: E01H1/00
Filed: 1990-11-09
Granted: 1993-05-25
Abstract: ABSTRACT         A surface conditioning attachment for a motor grader or the like for use in maintenance operations on gravel roadways comprises a gang of harrow disks carried on a support shaft, there being a support structure for deploying said disks laterally outwardly of the grader and at an angle to the direction of travel and with the concave sides of the disks facing forwardly.  In use the gang of disks engages the surface of the road shoulder and cuts up and moves gravel and vegetation thereon laterally towards the roadway.
Patent CA-2032401-C (CA)
Title: Circuit for measuring the level of an electrical signal and including offset correction means, and application thereof to amplifiers having automatic gain control
Inventor: NGUYEN QUANG-TAN
IPC: H03F3/45
Filed: 1990-12-17
Granted: 1994-08-16
Abstract: The circuit measures the level of an electrical signal, possibly with reference to a reference voltage. It can, with advantage, be applied to amplifiers with automatic gain control. 
<??>The circuit measures the level of an input electrical signal (Ve) and consists of an input amplifier (1), biased by a bias voltage, receiving this input signal (Ve) and producing an output signal (Vs), followed by a detector (2), itself followed by an integrator (3) delivering an integration signal (Vi). These three units form a measurement channel, the said integration signal (Vi) being the sum of a signal with a level proportional to the level of the said input signal (Ve) and an offset signal. The measuring circuit also incorporates a generator (6) producing a reference voltage (Vr), a compensation module (4) receiving the reference voltage (Vr) and producing a compensation signal (Vc), and a differential measuring amplifier (5) receiving the integration and compensation signals and producing a measurement signal (Vm). The bias voltage is the reference voltage (Vr). The compensation module (4) comprises stages corresponding to the units in the measurement channel in order to pass on the reference voltage (Vr) in conditions similar in all respects to those of the measurement channel. This produces a correction signal having the same value as the offset signal, the correction signal being included in the compensation signal (Vc). 
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Patent CA-2033651-C (CA)
Title: Radiotelephone controller configured for coresident secure and nonsecure modes
Inventor: MUELLNER GRAZYNA E
IPC: H04W88/02
Filed: 1991-01-04
Granted: 1994-11-08
Abstract: A controller (105) for a radiotelephone (100) having the capability of operation in both a secure mode for call authorization and a nonsecure mode for user interface is disclosed. The nonsecure mode and secure mode of operation are both resident in a single microcontroller (201) which runs the nonsecure operations until a requirement for the secure operation is requested during call placement. The nonsecure mode is disabled during the period of time the secure mode is operational and is reenabled upon completion of the secure mode operation. The secure mode cannot be accessed externally to the microcontroller (201).
Patent CA-2042619-C (CA)
Title: Monitored personal emergency response system
Inventor: DEVLIN PHILIP H
IPC: H04M11/04
Filed: 1991-05-15
Granted: 1996-02-06
Abstract: A personal  emergency  response system  (PERS)  is  disclosed which includes a method and apparatus for monitoring alarm signals to provide improved emergency response capabilities and enhanced system operability.   The system includes a  local response center for  relaying  alarm signals  received  from  subscribers  to mobile on-site field personnel via individual paging units.   The system is also capable of  retransmitting  an alarm signal  in the event that  a  response  to  the  original  alarm  signal  has  not  been registered within a predetermined period of time.  The system is also provided with redundant communications paths to minimize the possibility  of  a  missed  alarm  message  from  a  subscriber,  and self-test   capabilities   for   detecting   system   faults   and transmitting fault messages to the individual paging units of the system.
Patent CA-2043048-C (CA)
Title: Information recording apparatus
Inventor: KADOWAKI HIDEJIRO
IPC: B41J2/125
Filed: 1991-05-22
Granted: 2000-10-03
Abstract: In an apparatus wherein a recording medium is conveyed by conveying means with the front surface of the recording medium opposed to recording means and information is recorded on the recording medium as by liquid droplet jet, a first speed meter is provided on the back side of the recording meiudm and further, a second speed meter for detecting liquid droplet jet speed together with the first speed meter is provided at a predetermined location, whereby the recording position is adjusted. The first and second speed meters may preferably be optical Doppler velocimeters which will not cause any speed detection error depending on the fluctuation of the wavelength of a light source.
Patent CA-2043946-C (CA)
Title: Optical time domain reflectometer
Inventor: SO VINCENT CHOONG
IPC: H04B10/071
Filed: 1991-06-05
Granted: 2003-06-17
Abstract: In an optical time domain reflectometer (OTDR), an optical signal is coupled to an optical fiber path to be tested, and back-scattered and reflected light from the optical fiber path is detected and used to determine loss-distance characteristics of the path. A control unit varies the wavelength of the optical signal by varying the temperature of a semiconductor laser constituting the optical source, so that the loss-distance characteristics for a plurality of different wavelengths are determined and can be displayed to show any wavelength dependent loss of the optical fiber path, which loss may be due to modal interference associated with closely spaced discontinuities in the path.
Patent CA-2045679-C (CA)
Inventor: SIANESI DARIO
IPC: C08G65/00
Filed: 1990-04-20
Granted: 2000-08-22
Abstract: Procédé pour préparer des perfluoropolyéthers peroxydiques contenant des unités perfluoroalcoylènoxy avec au moins deux atomes de carbone. On fait réagir une ou plusieurs perfluoro-oléfines, sauf le tétrafluoroéthylène qui est utilisé seul, avec de l'oxygène dans la phase liquide à une température ne dépassant pas 50°C en présence d'un ou de plusieurs composés présentant une ou plusieurs liaisons F-X, X étant choisi dans le groupe comprenant F, O et Cl.
Patent CA-2048672-C (CA)
Inventor: MICHEL ALAIN
IPC: C08F14/06
Filed: 1990-12-28
Granted: 1998-05-19
Abstract: Une méthode pour fonctionnaliser des (co)polymères chlorés, dans laquelle on fait réagir ledit (co)polymère chloré à une température se situant entre 50 et 250 degrés C avec un dérivé organométallique de formule (I), où M est Sn, Pb, Sb ou Bi; A est NR3 où R3 est H ou radical -R1 B ou A est O; si M est Sn ou Pb, alors m est 4 et n est 1, 2 ou 3; si M est Sb ou Bi, alors m est 5 et n est 1, 2, 3 ou 4; R est un alkyle en C1-C8, un cycloalkyle en C3-C12, un aryle en C6-C14, un aralkyle en C7-C14, un cycloalkylalkyle en C4-C8; R1 est un alkyle en C1-C20, un aralkyle en C7-C14, un cycloalkyle en C3-C12, un aralkylalkyle en C4-C8, un arylcycloalkyle en C7-C20 ou une chaîne polymérique; B est Si(OR2)3 ou (OH)X; R2 peut avoir les mêmes valeurs que R; des compositions contenant un (co)polymère et un dérivé de la méthode décrite ci-haut et objets formés.
Patent CA-2059838-C (CA)
Title: Olefin polymerization and copolymerization process
Inventor: COHEN STEVEN ALAN
IPC: C08F10/06
Filed: 1992-01-22
Granted: 2002-05-28
Abstract: A multistage method for making a homopolymer or copolymer of an alpha-olefin having increased stiffness and broadened molecular weight distribution.
Patent CA-2060895-C (CA)
Inventor: OHTSUKI HIDEHIKO
IPC: A61K8/44
Filed: 1991-05-23
Granted: 2001-08-21
Abstract: An oral composition comprising cetylpyridinium chloride and an N.alpha.-longer acyl basic amino acid lower alkyl ester or a salt thereof promotes the adsorption of cetylpyridinium chloride as a bactericide to the surfaces of teeth, and hence shows excellent prevention of the formation of dental plaque and dental caries.
Patent CA-2063983-C (CA)
Title: Nestable cargo cart
Inventor: LEWANDOWSKI MARK S
IPC: B62B3/12
Filed: 1992-03-25
Granted: 1995-11-21
Abstract: A nestable cargo cart 10 suitable for carrying a plurality of cargo items is disclosed.  The cart includes a lower frame 11 disposed about a longitudinal axis having longitudinally spaced forward and aft ends 11a and 11b respectively, wheel means operatively connected to the lower frame 11, aft upright members 20a and 20b operatively connected to the lower-frame 11 adjacent to the aft end 11b and rising generally vertically upward in the first vertical orientation, forward upright members 15a and 15b operatively connected to the lower frame adjacent to the forward end 11a and rising generally vertically upward in the second vertical orientation, and first and second cargo retaining means 33a and 33b operatively connected to the aft upright members 20a and 20b and disposed generally inward.  The forward and aft upright members 33a and 33b are angled with respect to each other, and the cart is arranged and configured to allow similar carts to be stored in a nested manner, the forward end 11a of the first cart passing through the opening in the aft end 11b of a second cart.
Patent CA-2064174-C (CA)
Title: Carrier stock with tear-open tabs
Inventor: MARCO LESLIE S
IPC: B65D67/02
Filed: 1992-03-26
Granted: 1997-01-14
Abstract: Carrier stock formed from a single sheet of resilient polymeric material, such as low density polyethylene, for machine application to substantially identical containers.  The stock is severable to form individual carriers with three longitudinal rows of container-receiving apertures, as defined by band segments, which include cross segments formed with tear-open tabs.  The cross segments formed with such tabs are slitted so as to define a series of frangible bridges, which are staggered transversely, and which can be easily torn by a user pulling on such tabs.  Also, a distal portion of each tab is connected to another band segment by a frangible web, which is slitted.
Patent CA-2073380-C (CA)
Title: Wire-link belt
Inventor: HALTERBECK WALTER
IPC: D21F1/00
Filed: 1992-07-09
Granted: 2004-08-10
Abstract: It is the object of the present invention to design a wire-link belt such that its thickness shall be minimal, that it entrains less air and shall be more elastic. The present invention provides a wire-link, i.e. a filament-link belt for process purposes, in particular serving as a cloth for papermaking machines has a plurality of juxtaposed, mutually engaging wire-coils comprising end-arcs enclosing plug-in wires and turn-legs connecting the arcs. The turn-legs of at least a part of the wire-coils alternate each time between two end-arcs at least once between the flat sides of the wire-link belt.
Patent CA-2076809-C (CA)
Title: Apparatus and method for correcting the voltage on a photoconductive device
Inventor: ORESICK CARL F
IPC: G03G15/02
Filed: 1992-08-25
Granted: 1999-02-02
Abstract: An apparatus and method for maintaining a constant voltage potential on a photoconductive member within an electrophotographic printing system comprises and utilizes, respectively, a charging device, a voltage monitor and a controller. The charging device produces a voltage potential on a photoconductive member within the electrophotographic printing system. The voltage monitor measures the voltage on the photoconductive member and generates a voltage measured signal. The controller, responsive to the voltage measure signal, stores a target voltage value and computes the difference of the measured voltage signal and the target voltage value to obtain a voltage error for a prior print job. The controller computes a predicted control signal for the corresponding cycle of the next successive print job as a function of the voltage error and regulates the charging device for the corresponding cycle of the next successive print job as a function of the predicted control signal.
Patent CA-2080723-C (CA)
Inventor: PETTA GABRIEL
IPC: B25H7/00
Filed: 1992-10-16
Granted: 2001-07-17
Abstract: A method and apparatus for generating a template for use in assembling a structure such as a truss. One or more laser scanners mounted above a work surface are controlled by a computer to generate a scanning laser image of all or a portion of the structure. The computer receives data describing the relative location of the individual work pieces in their assembled positions and the position of the laser scanner relative to the work surface. The computer generates a set of template defining data which is converted to a control signal and transmitted to the laser scanner.
Patent CA-2084306-C (CA)
Title: Containerization system
Inventor: GOUGE SAMUEL T
IPC: C05G5/27
Filed: 1992-04-02
Granted: 1999-01-19
Abstract: The present invention relates to a containerization system comprising at least one inner water soluble (water dispersible) bag (110) located within an outer water soluble (water dispersible) bag (120). Each water soluble bag independently contains an agrochemical that does not substantially dissolve the bag, or bags, which it contacts. Typical agrochemicals are in solid, substantially non-aqueous liquid, or organic gel form. Typical agrochemicals include plant protection compounds such as pesticides. fungicides, insecticides, acaricides, nematocides, herbicides, plant nutrients or plant growth regulators.
Patent CA-2094958-C (CA)
Inventor: PERRY ROBERT NEIL
IPC: E02F3/36
Filed: 1993-04-27
Granted: 1997-01-14
Abstract: A loader has arms which are each provided with a linkage connection bushing located rearwardly of a connection bushing used for attaching the arms to a lower location of a bucket attaching bracket about which the bucket is pivotable by bucket cylinders respectively coupled between the bucket arms and upper locations of the bucket attaching brackets.  An optional linkage is provided for coupling each bucket cylinder to the upper location of an adjacent bucket mounting bracket and includes a first link adapted for having one end coupled to the linkage connection bushing and a second link having one end adapted for connection to the upper location of the bucket attaching bracket and a second end adapted for connection to a second end of the first link and to the bucket cylinder.
Patent CA-2099989-C (CA)
Inventor: FUJIO KATUHARU
IPC: F04C28/26
Filed: 1992-11-10
Granted: 2000-03-07
Abstract: A multi-stage gas compressor includes a plurality of compression elements which constitute a multi-stage compression mechanism, in which discharge sides of pressure stage compression elements are successively communicated with suction sides of following stage compression elements through respective communication passages so that a discharge side of each lower pressure stage compression element is communicated with a suction side of each higher pressure stage compression element through a communication passage so as to constitute a two-stage compression mechanism. A motor coupled to a drive shaft of the multi-stage compression mechanism is located in a motor chamber within a closed container containing the multi-stage compression mechanism, so as to discharge compressed gas from a final stage compression element of the multi-stage compression mechanism into the motor chamber. An oil sump is provided in a bottom part of the closed container, and a bypass passage connects an intermediate part of one of the communication passages with the motor chamber.      A bypass valve device located in the bypass passage allows communication only from the one of the communication passages to the motor chamber, when the pressure of the one of the communication passages is higher than that of the motor chamber. The starting load of the compressor and vibration and noise are reduced.
Patent CA-2104643-C (CA)
Title: Serum free medium
Inventor: FISCHER DINA
IPC: C12N5/0784
Filed: 1993-08-23
Granted: 2009-07-21
Abstract: A serum free medium capable of supporting production of mammalian cell products is provided. The medium comprises a basic medium and a cell viability protection agent, insulin and thrombin or a thrombin receptor activator.
Patent CA-2105403-C (CA)
Inventor: LANDAU SIMCHA
IPC: A47G7/08
Filed: 1993-07-09
Granted: 1996-06-11
Abstract: An improved cover for potted plants and method for covering potted plants is described.  The cover provides a water tight seal at its base while at the same time protecting the plant from contact with water leaking out of the plant.  The cover is in the form of a flat, tear-away bag that customers of florists and plant nurseries can use themselves without assistance.
Patent CA-2105992-C (CA)
Title: Random packing element and method
Inventor: MCNULTY KENNETH J
IPC: B01J19/30
Filed: 1992-03-06
Granted: 1999-01-19
Abstract: A saddle-type random packing element (10) for use in a vapor liquid tower which packing comprises an arcuate body having generally parallel, upright flanges (12, 13) on either side, the arcuate body having a plurality of alternating parallel, inner (16) and outer (18) arched rib elements extending transversely between the flanges. The method of manufacture of the packing element comprises slitting a flat metal sheet to form rib elements, bending the sheet to form the upright flanges, the arched rib elements and then into the arcuate shape of the packing.
Patent CA-2109275-C (CA)
Title: Projection electron lithographic procedure
Inventor: BERGER STEVEN DAVID
IPC: G03F7/20
Filed: 1993-10-26
Granted: 1997-01-07
Abstract: It has been found that for a SCALPEL lithographic system thermal effects dictate that the acceleration voltage for the exposing electrons be maintained within a specific range. This range depends on a variety of factors but is generally in the 50 to 150 KeV region. Additionally, thermal considerations also dictate the method of scanning the mask to print an entire wafer.
Patent CA-2109796-C (CA)
Title: Modulation of cellular response to external stimuli
Inventor: BIANCO JAMES A
IPC: A61K31/47
Filed: 1992-05-22
Granted: 2004-04-27
Abstract: Compounds of formula (I), wherein one and only one of R1 and R3 is a straight-chain or branched-chain .omega.- or (.omega.-1)-hydroxyalkyl (5-8C), or is an (.omega.-1)-oxoalkyl (5-8C) or is an (.omega., .omega.-1) or (.omega.- 1, .omega.-2) -dihydroxyalkyl (5-8C), or is an alkenyl substituent (5-8C), and the other is alkyl (1-12C) optionally containing one or two non-adjacent oxygen atoms in place of C, and wherein R2 is alkyl (1-12C) optionally containing one or two non-adjacent oxygen atoms in place of C, are useful in modulating the effects of internal and external stimuli on cells by reversing the effects of these stimuli on the short-term secondary messenger pathways. In particular, the compounds of Formula (I), lower elevated levels of unsaturated, non-arachidonate phosphatidic acid (PA) and diacylglycerol (DAG) derived from said PA within seconds of the primary stimulus and their contact with said cells. The modulatory effect depends on the nature of the target cell and the stimulus applied.