baber/WOPTO huggingface dataset:
Patent CA-2012771-A1 (CA)
Inventor: HENRICSON KAJ
IPC: D21C9/10
Filed: 1990-03-22
Abstract: Ozone bleaching has been extensively studied in laboratory and pilot  scale.   It  has been proved  that  at  low consistencies, i.e. less than 5 %, ozone dissolves well in water and thus good transfer of substance between the ozone and the fibers in the water is achieved.   On the other hand, it has been discovered that the ozone, being a gaseous substance, reacts well also directly with a fiber surface which, however, presupposes that the consistency of the suspension is over 25 %.   Further,  it has been discovered that in the intermediate range between said consistencies ozone cannot satisfactorily contact the fibers.   However, both environmental and pumping factors determine the operation to be carried out at that particular intermediate consistency range of 5 to 25 %.            A characteristic feature of the method of the present invention,  which avoids the disadvantages of prior art methods and permits operation at the consistency range of 5 to 25 %, is that cellulose pulp is pumped with a high-consistency pump to a fluidizing mixer in which O2 /O3 gas is introduced and mixed into the pulp so as to generate foam in which the fibers in the pulp and the ozone used as the bleaching agent are brought to contact with each other, and that the pulp is discharged from the mixer to a reaction vessel.
Patent CA-2014071-A1 (CA)
Title: Vinyl chloride resin composition
Inventor: MATSUBA KUNIYOSHI
IPC: C08L27/04
Filed: 1990-04-06
Abstract: A vinyl chloride resin composition comprising:          (1) 100 parts by weight of a vinyl chloride resin and (2) 0.1 to 30 parts by weight of a two-stage polymer, said polymer (2) being prepared by emulsion-polymerizing 60 to 95 parts by weight of a monomer mixture (A) of 50 to 95 % by weight of methyl methacrylate, 5 to 50 % by weight of an alkyl methacrylate with a C2 to C8 alkyl group and 0 to 20 % by weight of a vinyl monomer to give a polymer latex and then polymerizing 40 to 5 parts by weight of a monomer mixture (B) of 20 to 80 % by weight of an alkyl acrylate and/or an alkyl methacrylate other than methyl methacrylate, 80 to 20 % by weight of methyl methacrylate and 0 to 20 % by weight of a vinyl monomer in the presence of said polymer latex, said polymer (2) having a particle size of not more than 1000 .ANG. in the latex, and a specific viscosity at 30°C of the solution wherein 0.4 g of said polymer (2) is dissolved in 100 m~ of benzene of 1 or more.  The composition is excellent in transparence and secondary processability as well as in processability.  Thus composition having excellent properties can be prepared by admixing a small amount, such as 0.1 to 30 parts by weight of the two-stage polymer as the agent for improving the processability with 100 parts by weight of the vinyl chloride resin.
Patent CA-2014283-A1 (CA)
Inventor: GODAT JEAN
IPC: B01F15/00
Filed: 1990-04-10
Abstract: Couvercle agitateur notamment pour les boîtes de teintes de laques en carrosserie automobile, à agitateur mobile axialement. Invention : Monsieur Jean GODAT Monsieur Alain KRZYWDZIAK Monsieur Daniel PARMENON Société Anonyme dite : FONDERIE \A ATELIERS DES SABLONS L'invention concerne un Couvercle agitateur notamment pour les boîtes de teintes de laques en carrosserie automobile, à agitateur mobile axialement. Dans ce couvercle agitateur la pale agitatrice (11) solidaire en rotation de l'axe (3), est mobile axialement. Un dispositif d'étanchéité est en outre prévu entre l'axe et le couvercle. Figure 1a
Patent CA-2014935-A1 (CA)
Inventor: JOHNSTON JAMES D
IPC: H04N19/94
Filed: 1990-04-19
Abstract: An image-coding system reduces image data redundancies and perceptual irrelevancies through progressive sub-band coding. The image is separated into aplurality of sub-bands. From this sub-band information, a perceptual metric, based on the properties of the sub-band filters, quantizer error distribution, and properties of the human visual system, is determined which provides the maximum amount of coding noise that may be introduced to each pixel in every sub-band without causing perceptible degradation of the coded image. This perceptual metric is used to adjust the quantizer used in encoding each sub-band signal. In addition, redundancy in the output of the quantizer is reduced using a multidimensional Huffman compression scheme.
Patent CA-2017932-A1 (CA)
Title: Oxygen-containing titanocenes, and the use thereof
Inventor: STEINER EGINHARD
IPC: C07F17/00
Filed: 1990-05-30
Abstract: Titanocenes of the formula I (see formula I) in which R1 are cyclopentadienyl~ groups and R2 and R3 are aromatic radicals which are substituted in both ortho-positions by fluorine and, in addition, are substituted by an acyloxy group are suitable as photoinitiators for the photopolymerization of ethylenically unsaturated compounds.
Patent CA-2019316-A1 (CA)
Inventor: KARCHEWSKI JOHN
IPC: A01B21/04
Filed: 1990-06-19
Abstract: ABSTRACT OF THE DISCLOSURE            A problem common to existing cultivators of the toothed wheel type is that of making repairs.  If a tooth or tine-is damaged or broken, substantial disassembly of the cultivator may be necessary to effect repairs.  This problem is overcome by the use of a plurality of toothed wheels arranged side-by-side on shafts to defined sections, which in turn are mounted on a boom for towing over the ground.  Each wheel includes a pair of parallel, spaced apart, circular plates with partitions extending therebetween to define a central pentagonal shaft receiving passage and five compartments around the central passage for receiving rubber blocks.  The rubber blocks carry generally V-shaped teeth which extend radially outwardly from the blocks.  Each compartment and block  is in the shape of a segment of a circle.  Each block is held in a compartment by a bolt and nut for easy removal and re-insertion.
Patent CA-2019592-A1 (CA)
IPC: H04J13/00
Filed: 1990-06-22
Abstract: A frequency setting system for a radio transmission apparatus of the type transmitting a signal in the form of bursts and changing transmission frequency burst by burst. A frequency division data signal representative of a frequency division number and a strobe signal representative of frequency setting are fed to a frequency synthesizer. The timings for generating the frequency division data signal and strobe signal are determined with no regard to the locking time of the frequency synthesizer which is dependent on the kind of the synthesizer, frequency, etc.
Patent CA-2022218-A1 (CA)
Title: Preparation of polyhemiacetals
Inventor: LUCY ANDREW R
IPC: C08G4/00
Filed: 1990-07-30
Abstract: Case 7324(2) ABSTRACT OF THE DISCLOSURE                    PREPARATION OF POLYHENIACETALS      Novel hemiacetalised derivatives of polyketones (linear alternating polymers of carbon monoxide and one or more alkenes are prepared by reacting the polyketone with a diol of formula HOZOH, where Z = -(C(R)2)n-, the R groups are independently H, OH or Cl to C10 alkyl or hydroxyalkyl and n i3 2 to 6.  The process of preparation is characterised by using a molar ratio of diol to carbonyl groups in the polyketone of at least 5:1.
Patent CA-2022275-A1 (CA)
Title: Powder granule sample inspection apparatus
Inventor: TOKOYAMA KATSUMI
IPC: G01N1/00
Filed: 1990-07-30
Abstract: ABSTRACT OF THE DISCLOSURE      A powder granule sample inspection apparatus having a sampling device for sampling powder granules together with air from an on-line tube, a separator for separating sampled powder granules from the air, a feeder for feeding the sampled powder granules, a transfer device for transferring the sampled powder granules fed, an adjuster for making the powder granules transferred as one layer, and an inspector for inspecting the sampled powder granules whether or not they contain metallic foreign particles, for inspecting moisture ratio of the sampled powder granules, and for measuring the number and size of colored foreign particles or the like.
Patent CA-2022286-A1 (CA)
Inventor: HORI TOSHIAKI
IPC: A23C9/127
Filed: 1990-07-30
Abstract: Abstract of the Disclosure A transparent lactic acid bacteria drink, which is a fermentation product obtained by allowing kefir fungi to ferment a milk material under forced supply of an oxygen-containing gas, comprises a casein protein-free whey component as the major component together with 3 to 23 % of nonfat milk solids and 0.1 to 1.5 % of ethanol, is disclosed. This lactic acid bacteria drink can be produced by a process which comprises allowing kefir fungi to ferment a milk material under forced supply of an oxygen-containing gas, removing a precipitate including casein protein and then sterilizing the supernatant by filtering or pasteurizing the same by heating.
Patent CA-2022888-A1 (CA)
Title: Electroacoustic device for hearing needs including noise cancellation
Inventor: MOSELEY WILLIAM T
IPC: G10K11/16
Filed: 1990-08-08
Abstract: ELECTROACOUSTIC DEVICE FOR HEARING NEEDS     INCLUDING NOISE CANCELLATION                         ABSTRACT A device for performing electroacoustic functions including noise cancellation, hearing aid, communication interface, headset, feed for recording device, and headphone functions.  The device includes composite transducers connected to a control unit.  The composite transducers can be mounted on a headband and are configured to include input transducers for converting acoustic waves into electrical signals for processing by a control unit, and output transducers for converting the processed electrical signals to processed sound waves.  The control unit includes an inverter/amplifier and a mixer/output amplifier for inverting the electrical input and controlling the gain for either adjusting the gain to maximize a noise cancellation function or increasing the gain beyond the minimum level heard by the ear to a desired level for a hearing aid function.  Connectors for connecting recorders and a boom microphone, and function selection switches are provided by the control means for connecting circuit components of the control unit selectively for performing the above functions.  The input and output transducers have oppositely oriented diaphragms mounted in a common plane to provide an inverted acoustic wave in real time for combining with and substantially cancelling an incoming acoustic wave.  In this embodiment, an isolation wall means may also be incorporated to prevent sound from the output transducer from propagating back into the input transducer.  In a second embodiment, the input and output transducers are both oriented in the same direction toward the user's ear canal.
Patent CA-2023228-A1 (CA)
Title: Snowboard
Inventor: MORRIS JAMES K
IPC: A63C5/03
Filed: 1990-08-14
Abstract: IMPROVED SNOWBOARD           Abstract of the Disclosure An improved snowboard (10) having a convex bottom (44) with a flat area (28) formed therein to extend from the tail (16) to at least the nose (18) to facilitate balancing of the snowboard (10) and improve performance when cornering. An improved snowboard (23) illustrates the convex bottom (36) smoothly tapering into the body 34 at the longitudinal midpoint (50) to from a flat bottom (52) that then extends to the tip (44). To provide additional control and stability, a keel (56) extends from the flat bottom (52) a distance no further than the convex bottom (36) and having a width between 2% and 4% of the width of the body (34).
Patent CA-2023647-A1 (CA)
Inventor: ELMS LANNY L
IPC: B60B39/00
Filed: 1990-08-20
Abstract: TRACTION BELT            ABSTRACT OF THE INVENTION           .         A traction belt  for  use with vehicle  tires includes  a wide band  of  textile  fabric,  for  example nylon, carrying a series of side-to-side metal bars.  The band may be fastened around the tread of a tire with a strap connecting the ends of the band.   Alternatively, the band may be laid flat on the ground and one end inserted under a tire for use as a mat over which a tire might drive.
Patent CA-2024772-A1 (CA)
Inventor: ISHIHARA KENJI
IPC: A45C1/10
Filed: 1990-09-06
Abstract: ABSTRACT        This  invention  relates  to  a  coin  receiving appliance portable easily with coins being receive or held therein.        The  coin  receiving appliance  of  the  invention comprises  a  first  bottomed  tubular body for  receiving coins  therein,  and  a  second bottomed tubular body for receiving  or  holding  coins  removably connected  to  the first bottomed tubular body through a connecting body.         Within at  least  the first  or second bottomed tubular body,  there are provided a coin supporting seat member, and a spring member having an inner end portion fixedly  attached  to  the  bottom wall  of  the  bottomed tubular body and an outer end portion adapted to press  at all times the coin supporting seat member onto a stopper wall portion including a notched portion for insertion of coins of the bottomed tubular body.        In the above-mentioned case, the first and second bottomed tubular bodies have inner diameters different so as to permit coins of which kinds are different from each other to be received or held thereinto.
Patent CA-2025845-A1 (CA)
Title: Methods of extracting nucleic acids and pcr amplification without using a proteolytic enzyme
Inventor: CUMMINS THOMAS J
IPC: C12Q1/68
Filed: 1990-09-20
Abstract: METHODS OF EXTRACTING NUCLEIC ACIDS AND PCR AMPLIFICATION WITHOUT USING A PROTEOLYTIC ENZYME            Abstract of the Disclosure This invention provides a rapid and highly effective method for extracting nucleic acids from cells or virions without the use of proteolytic enzymes.  Extraction is accomplished within a few minutes using a lysing composition comprising a buffer, a source of a DNA polymerase cofactor, a stabilizer and at least one nonionic surfactant which will release nucleic acids from cytoplasmic and nuclear membranes of cells or virions.  The resulting mixture is heated to boiling for up to fifteen minutes, and the nucleic acids are recovered for amplification using polymerase chain reaction.  No proteolytic enzyme is used in the extraction process.
Patent CA-2027272-A1 (CA)
Title: Door hinge
Inventor: OHSHIMA KAZUYOSHI
IPC: A47K13/10
Filed: 1990-10-10
Abstract: According to the invention, there is provided a door hinge comprising a spring that plays the role of both a torsion spring and a compression spring, wherein its resilient force is used for axially pressing a movable cam against a matching fixed cam it comprises and thereby facilitating the opening and closing motion of the door with which it is used by giving said cams such specific configurations that the spring accelerates the opening motion of the door from a given angular position of the door and locks the door at a particular open position and at a closed position.  Since a door using such a hinge that comprises a spring whose resilient force constantly biases the door to open can be either opened to any de-sired angle or closed and sustained there under a locked condition when the rotary shaft of the hinge is firmly connected to the door, it can be used for a flap door or another vertically rotatable door such as a toilet lid to sustain the door to an open position under a locked condi-tion even if the resilient force of the spring is nulli-fied at that position and the door is liable to be pushed back by an obstacle such as a wire located behind the toilet assembly comprising the lid.  Therefore, the door is protected against any turning effort and other forces which are unintentionally applied to the door.
Patent CA-2028144-A1 (CA)
Title: Process for the conversion of c -c paraffinic hydrocarbons to petrochemical feedstocks
Inventor: NEMET-MAVRODIN MAGARET
IPC: C10G35/095
Filed: 1990-02-16
Abstract: A process is disclosed for the conversion of C2-C12 paraffinic hydrocarbons to more valuable petrochemical feedstocks including C2-C4 olefins and C6-C8 aromatics in the presence of a composite catalyst comprising a binder and at least one zeolite having a Constraint Index of between 1 and 12, the composite catalyst having an alpha value of greater than 5 and less than 33. It has been found that yields of valuable C2-C4 olefins and C6-C8 aromatics are increased by maintaining the composite catalyst alpha value within the claimed range.
Patent CA-2030645-A1 (CA)
Title: Polyamide fiber reinforced polyetherester composition
Inventor: GILES HAROLD F JR
IPC: B32B27/12
Filed: 1990-11-22
Abstract: ABSTRACT OF THE DISCLOSURE A composition comprising a polyetherester resin reinforced with aromatic polyamide fibers, exhibits good adhesion between the polyetherester resin and the aromatic polyamide fibers and could be used in automotive or other high strength applications.
Patent CA-2031558-A1 (CA)
Title: Apparatus for connecting a pouring tube to the outlet of a vessel containing a metal melt
Inventor: AMSLER HEINRICH
IPC: B22D11/10
Filed: 1990-12-05
Abstract: ABSTRACT            The apparatus (20) for connecting a pouring tube (30) to the outlet of a vessel (10) containing a metal melt has a support arm (22) which carries at least one pouring tube (30) and which is arranged on the vessel (10) so as to be movable longitudinally and trans-versely to the axis (A) of the outlet openings (12). Provided on the support arm (22) is a closure element (40) with a closure surface  (40')  which laterally extends the upper end surface (30') of the pouring tube (30).  Particularly an emergency closing of the outlet by transverse movement of the support arm (22) and thus of the closure element (40) beneath the outlet opening may thus be achieved in a very simple manner.            (Fig. 1)
Patent CA-2033679-A1 (CA)
Title: Method and system for optimizing audio imaging in an automotive listening environment
Inventor: HATLEY BRIAN J
IPC: H04S5/02
Filed: 1991-01-07
Abstract: METHOD AND SYSTEM FOR OPTIMIZING AUDIO IMAGING IN AN AUTOMOTIVE LISTENING ENVIRONMENT           An improved audio system comprising input means for inputting first and second audio signals; first summing means for generating a sum signal comprising the sum of said first and second audio signals and for generating a first output signal; inverting means coupled to said first summing means for generat-ing a phase inverted sum signal; second summing means coupled to said first audio signal and said phase inverted sum signal for generating a second output signal corresponding to the difference between said first audio signal and said sum signal; and third summing means coupled to said second audio and said phase inverted  sum  signal  for  generating  a  third  output  signal corresponding to the difference between said second audio signal and said sum signal.
Patent CA-2034986-A1 (CA)
Title: Patterning method for epitaxial lift-off processing
Inventor: GMITTER THOMAS J
IPC: H01L21/306
Filed: 1991-01-25
Abstract: Abstract of the Disclosure In the fabrication of microelectronic, optoelectronic, and photonic devices, methods are being used which involve selective processing of material in the presence of a patterned mask layer; for example, such processing may involve etching.  Typically, mask layer material is chosen on the basis of response to suitable radiation, allowing for patterning by selective irradiation followed by selective removal of mask layer material.  However, in so-called epitaxial lift-off processing, material (2/3) to be processed may be covered with a support layer (4) of a material which is selected in view of desired mechanical and thermal porperties, and which is not amenable to patterning by radiation.  A method is described which provides for patterning of such layer by heated mechanical means (5,9) subh as, e.g., a heated stylus or roller.
Patent CA-2035588-A1 (CA)
Inventor: SAUNDERS GERALD A B
IPC: A61G3/08
Filed: 1991-02-04
Abstract: Abstract of the Disclosure A floor anchor pocket for mounting in a vehicle designed to carry wheelchairs or cargo is described.  The pocket is provided with an internally located spring and a specially shaped cut-out so as to provide positive self locking for a tie down strap hook which is insertable therein.
Patent CA-2036647-A1 (CA)
Title: Method of producing grain oriented silicon steel sheets having improved magnetic properties and bending properties
Inventor: KOMATSUBARA MICHIRO
IPC: H01F1/16
Filed: 1991-02-19
Abstract: The production of grain oriented silicon steel sheets comprises a combination of hot rolling step, cold rolling step, decarburization and primary recrystallization annealing step, annealing separator applying step and secondary recrystallization annealing and purification annealing step.  In this case, the cold rolled sheet is subjected to an electrolytic degreasing in a silicate bath containing an iron concentration of 50-5000 mg/~ and Cu is adhered to the surface(s) of the sheet after the decarburization and primary recrystallization annealing in an amount of 400-2000 mg/m2 per one-side surface.
Patent CA-2036782-A1 (CA)
Title: Ophthalmic lenses based on amorphous fluoropolymers
Inventor: HAGMANN PETER
IPC: C08F34/02
Filed: 1991-02-21
Abstract: V-17969/1+2/=/TIT 12 Ophthalmic lenses based on amorphous fluoropolymers Abstract The invention relates to ophthalmic lenses, such as contact lenses or intraocular lenses, which essentially consist of an amorphous copolymer which comprises units of theformula I                       (I) and units of the formula II          -CF2-CF2-                    (II) in which a and b independently of one another are zero, one or two, and in which R1 and R2 independently of one another are perfluorinated lower alkyl.   They have a combination of high hardness and oxygen permeability. They moreover have such a high glass transition point that they can be autoclaved. Their crystallinity and their refractive index are furthermore decidedly low.
Patent CA-2039152-A1 (CA)
Title: Biodegradable polymers
Inventor: HANNA MILFORD A
IPC: C08F8/00
Filed: 1990-08-10
Abstract: To prepare a biodegradable plastic, biodegradable materials such as starches and a non-biodegradable polymer such as a polystyrene, polyurethane, polyethylene, polypropylene, or polycarbonate are treated: (1) under heat, pressure and reagents to break the polymers; and (2) by adding to them an oxidizing agent. This treatment forms and/or makes available reactive groups for bonding: (1) on the biodegradable material groups such as aldehyde or hydroxyl groups in the case of the carbohydrates and amine groups in the case of proteins and certain other compounds such as urea; and (2) on the non-biodegradable plastic groups such as aldehydes, methyl, propyl, ethyl, benzyl or hydroxyl groups. In one embodiment, plastic and starch are processed in an extruder by: (1) mixing a starch in a range of between 15 percent and 80 percent, an oxidizing agent and an agent to break up the starch and the plastics;  and (2) subjecting the combination to sufficient heat and/or pressure to break the plastic into shorter chains and bond monosaccharides to monomers from the non-biodegradable polymer.
Patent CA-2040225-A1 (CA)
Inventor: UNEWISSE HEINZ
IPC: B21D39/04
Filed: 1991-04-11
Abstract: METHOD AND APPARATUS FOR PRODUCING A LOCKED, TIGHT                    PIPE-CONNECTION       ABSTRACT OF THE DISCLOSURE    This invention relates to a process and an apparatus for the manufacture of a permanent, tight pipe joint between a smooth pipe end and a press fitting surrounding it, whereby the latter is pressed positively and non-positively onto the inserted pipe and by means of a pressing tool applied to it.  The invention is characterized by the fact that, after the application of the pressing tool, the pipe already inserted into the press fitting, or the press fitting pushed onto the end of the pipe, is exposed to an adjustable axial force by means of an apparatus located on the pressing tool, and the closing movement of the jaws for the pressing of the press fitting can only be triggered when this force has reached a value which is greater than a specified adjustable response level.