baber/WOPTO huggingface dataset:
Patent CA-2039403-A1 (CA)
Title: Process for the manufacture of 2-deoxy-d-threo-pentofuranosides, intermediates for their manufacture and their use
Inventor: SAISCHEK GERALD
IPC: C07H5/02
Filed: 1991-03-28
Abstract: Disclosed is a process for the manufacture of 2-Deoxy-D-threo-pentofu-ranosides of formula 1          (1) wherein R1 is an alkyl group having 1 to 4 carbon atoms and R7 is a hy-droxy protection group by reacting a 2-deoxy-D-erythro-pentofuranoside of formula 2           (2) wherein R1 is an alkyl group having 1 to 4 carbon atoms, R3 is an alkyl-, aryl-, alkylaryl- or aralkyl-sulfonyl group, either unsubstituted or substi-tuted one or more times by halogen atoms, nitro or alkoxy groups, an imid-azolesulfonyl or halosulfonyl group, and R4 has the same meaning as R3 or signifies a hydroxy protection group. Furtheron disclosed are a process for the manufacture of 3-substituted 2-deoxy-D-erythro-pentofuranosides using these compounds and novel and substituted and unsubstituted 2-deoxy-D-pentofuranosides and their use for the manufacture of 3'-substituted 2'-deoxynucleosides.
Patent CA-2040470-A1 (CA)
Inventor: NISHIUMI KENJI
IPC: G07F5/24
Filed: 1991-04-15
Abstract: A controller for an automatic vending machine in which the specification for each of a plurality of countries is set easily.  If a country setting switch sets a specification for a desired country, parameter values corresponding to the specification are read from a memory and elements required for changing the specifica-tion are controlled in accordance with the Parameter values.  The parameter values include, for example, respective threshold levels for the inserted coins for each of the countries and the values indicative of the distributing manners to distribute the respective insert-ed coins for each of the countries.
Patent CA-2042773-A1 (CA)
Title: Method of producing ultra-low-carbon steel
Inventor: YAMAGUCHI KOJI
IPC: C21C7/10
Filed: 1991-05-16
Abstract: A method of producing an ultra-low-carbon steel by conducting vacuum-decarburization of a molten steel by means of a vacuum degasifier of the type having recirculation pipes and a vacuum chamber.   When the carbon content of the molten steel has come down to a level of 50 ppm or less, hydrogen gas is introduced together with an inert gas into the molten steel either by directly injecting a hydrogen-containing gas into the molten steel in the vacuum chamber through a tuyere provided in the wall of the vacuum chamber or by blowing the hydrogen-containing gas onto the surface of the molten steel in the vacuum chamber through a lance provided in the vacuum chamber.  In order to enhance the effect produced by the method of the present invention, it is possible to take an additional measure such as blowing of hydrogen gas through a tuyere provided in the wall of the recirculation pipe or injection of hydrogen or hydrogen-containing gas through an injection lance immersed in the molten steel held in, a ladle.
Patent CA-2046595-A1 (CA)
Inventor: HEIKKILA HEIKKI
IPC: C12R1/645
Filed: 1990-01-15
Abstract: A method for the production of xylitol from an aqueous xylose solution which comprises the steps of fermenting said aqueous xylose solution with a yeast strain capable of converting free xylose to xylitol, and free hexoses present in said solution to ethanol, for a period of time sufficient to produce a fermented solution containing xylitol; and separating one or several xylitol-rich fraction by chromatographic separation from said fermenting solution.
Patent CA-2046954-A1 (CA)
Inventor: WONG YIU W
IPC: B01J8/02
Filed: 1991-07-12
Abstract: According to the present invention, there is provided a radial flow distributor comprising a cylindrical body portion having a vertical side wall, a top and a bottom.   The  cylindrical  body portion has  a horizontal baffle plate disposed within  it,  thereby dividing the body portion into a first compartment and a second compartment.  The horizontally disposed baffle plate preferably is circular in shape and sufficiently large that it meets the side walls of the cylindrical body portion.  The baffle also has a central opening in it.  Conduit means,  operably connected to the first compartment, are provided for introducing fluid to that compartment.   A  plurality  of  apertures  are  evenly spaced around the periphery of the side wall of the second  compartment  for  distributing  fluid  from  the distributor radially outwardly.
Patent CA-2047507-A1 (CA)
Title: Lens design method and resulting aspheric lens
Inventor: ROFFMAN JEFFREY H
IPC: G02B3/02
Filed: 1991-07-22
Abstract: An aspheric lens for providing improved vision and a method for generating such a lens is described. The lens provides a sharp image focus while minimizing image aberrations. The method utilizes ray tracing techniques in conjunction with Modulation Transfer functions to accurately account for the total corrective lens-eye system. The lens may be in the form of a contact lens, an intraocular lens, a natural lens or a spectacle lens, and is suitable for correcting myopia, presbyopia, astigmatism and other focusing problems. The lens is characterized by a hyperbolic or parabolic surface which functions to reduce spherical aberrations and minimize the retinal image spot size.
Patent CA-2049897-A1 (CA)
Title: Water repellent silica sol and process for preparing the same
Inventor: KAIJOU AKIRA
IPC: C09D7/62
Filed: 1991-08-26
Abstract: ABSTRACT       A water repellent silica sol and a process for preparing said silica sol are disclosed.  The water repellent silica sol comprises the colloidal silica particles whose surfaces have been made water-repellent with an organic group-substituted silane, said colloidal silica particles having the water repellent surfaces being 100 nm or below in size. The water repellent silica sol is produced by a process (I) which comprises reacting a silica colloid dispersed in a non-polar organic solvent with an organic group-substituted silane so that the surfaces of the colloidal silica particles are made water-repellent with said organic group-substituted silane or a process (II) which comprises adding a non-polar organic solvent, a cationic surface active agent and an organic group-substituted silane to a water-dispersed silica colloid, forming an emulsion therefrom, removing water from the emulsion by azeotropic dehydration and then refluxing the emulsion under heating.
Patent CA-2051849-A1 (CA)
Inventor: NAKAGAWA YOSHIHIRO
IPC: A23L3/015
Filed: 1991-09-19
Abstract: A method for treating fruit juice with high pres-sure having a step for compressing the fruit juice with high pressure in excess of 2,000 atm., wherein a step for adding a proteolytic enzyme particularly a proteolytic enzyme active in an acid precedes the high pressure steri-lization process.
Patent CA-2053937-A1 (CA)
Title: Process and device for applying wires on a substrate using a drum with rows of fixed and mobile teeth, layer obtained by this process and article using that layer (tire)
Inventor: CARRIER GILLES
IPC: D04H3/05
Filed: 1991-10-22
Abstract: Method and apparatus (1) for applying yarns (9) to a support (11) in order to obtain a web (13) by giving the yarns a sinuous shape. A rotary drum (2) with movable pins (5B) which are displaced is used. Webs obtained by means of this method or this apparatus, articles incorporating these webs, these articles being, for example, tyre casings. 
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Patent CA-2059100-A1 (CA)
Title: Agitator protected against corrosion and having a separable blade unit
Inventor: SCHNEIDER WALTER
IPC: G01N27/20
Filed: 1992-01-09
Abstract: ABSTRACT OF THE INVENTION            Described is an agitator protected against corrosion and having a separable blade unit, comprising a metallic shaft provided with a corrosion resistant enameling on its outer surface, whereby at least one blade unit having a corrosion resistant enameling is provided, and whereby in the mounted condition of the agitator  a plug-in connection is provided in an interference fit region 7 having complementary fitting surfaces out of adjacent worked surfaces of the coatings.  In the interference fit region 7 in each of the two fitting surfaces a central partial region out of electrically conducting material is formed, of which the one partial region 3 is connected with the metallic body of the agitator shaft 1 and the other partial region 6 is connected in an electrically conducting manner with the metallic body of the blade unit.   In the mounted condition the outer surfaces of the two partial regions are at least partially overlapping each other arranged in such a manner, that an electrically conducting connection is provided between the metallic body of the agitator shaft and the metallic body of the blade unit.          The assembly of the agitators is made preferably by means of a shrinking techniques by supercooling of the  agitator  shaft with liquid nitrogen introduced into the inside thereof.
Patent CA-2060427-A1 (CA)
Inventor: ONISHI MASASHI
IPC: H01S3/06
Filed: 1992-01-31
Abstract: An optical functioning glass for enabling optical amplification at 1.3-µm wavelength band or increasing efficiency of the amplification is disclosed.  The optical functioning glass contains Nd3+ as an active material and uranium, both of which are doped in a multi-component function glass serving as a host glass.          Since uranium is doped in the optical functioning glass, light emission of Nd3+ in the 1.06-µm wavelength band can be absorbed by uranium.  A decrease in efficiency of induced emission in a 1.3-µm wavelength band can be prevented, and an optical functioning glass suitable for optical amplification in the 1.3-µm wavelength band can be obtained.  When a fiber is formed using the optical functioning glass as a core, a low-threshold, high-gain fiber amplifier, fiber laser, and the like can be obtained.
Patent CA-2063193-A1 (CA)
Title: Infant support pad
Inventor: MASON CYNTHIA A
IPC: B60N2/28
Filed: 1992-03-17
Abstract: ABSTRACT OF THE DISCLOSURE     An infant support pad composed, for example, of a plastic foam and including a first embodiment for use with infant retaining devices such as automobile safety seats, strollers, high chairs, swings, and the like; and which includes a second reclining embodiment for use in hospitals and in cribs for small infants.  The support pad of the invention serves to keep the neck, head, and entire body of the infant from involuntary movement, and it cradles the infant from head to bottom.  The infant support pad is constructed in a manner such that the infant fits directly into the pad, and the pad is shaped to extend over the sides of the head of the infant and engage the head as an ear-muff, and to prevent the head, neck, and entire body of the infant from moving side to side.
Patent CA-2063502-A1 (CA)
Inventor: OILLE FRED J
IPC: A47K3/36
Filed: 1992-03-19
Abstract: ABSTRACT OF THE DISCLOSURE                           SHOWER DOOR   A hinge assembly comprises a pair of continuous extruded channel members, one of which has an axially aligned tubular portion and the other an axially aligned keyway. The members are united by hinge clips having a leg insertable in the keyway and a gudgeon plate having an opening depending from the leg, and a hinge pin which passes through the gudgeon plate opening and the tubular portion. The keyway may be hidden within the other member, which may be transversely slotted to provide an access opening for the leg where this is to be supported intermediate the axial ends of the member. Similarly the tubular member may be transversely slotted to provide an access opening for the gudgeon plate. The other member may include one or more axially aligned extensions which form a labyrinth seal with the one member, making the hinge assembly particularly suited for use in shower doors.
Patent CA-2064976-A1 (CA)
Inventor: CHLEBAK RALPH
IPC: F25B6/04
Filed: 1992-04-02
Abstract: A condenser is positioned in high-pressure refrigerant line of a cooling system. The condenser is formed of thermally-conductive material defining a closed reservoir for accumulating liquid refrigerant. An inlet receives the refrigerant flow from the high-pressure line and an outlet discharges the accumulated liquid refrigerant to an expansion valve. The conduit within the reservoir conducts the refrigerant flow from the inlet to a region of the reservoir above the outlet. The conduit is apertured to direct substantially all of the refrigerant flow against upper portions of the condenser, specifically against one side of the condenser. That side of the condenser is exposed to the flow of cold fluid medium (typically air) produced by the system to condense a gaseous component of the refrigeration flow.
Patent CA-2066054-A1 (CA)
Inventor: KREH ROBERT P
IPC: C11D7/34
Filed: 1992-04-15
Abstract: A process for preventing or removing calcium and rust scale deposits from surfaces which are in contact with aqueous systems comprising adding to the aqueous system 3,5-bis(di-N,N-(carboxymethyl)aminomethyl)-4-hydroxybenzenesulfonic acid in an amount effective to remove the scale and rust deposits.
Patent CA-2066360-A1 (CA)
Inventor: YAMAMOTO HARUHIKO
IPC: F25D9/00
Filed: 1992-04-16
Abstract: An electronic equipment cooling apparatus including an airtight case (1, 20) having an internal chamber (1A, 20A), a cooling module (2) located in the airtight case for cooling an electronic equipment (3), a first heat exchanger (4) located in the airtight case for dehumidifying the internal chamber of the airtight case, an external cooling medium supply unit (10) located outside the airtight case for feeding a cooling medium, and a pipeline (6)  connecting the external cooling medium supply unit, the cooling module and the first heat exchanger to make a circulation therethrough of the cooling medium from the external cooling medium supply unit in the cooling module and the first heat exchanger, to thereby lower a dew-point temperature in the airtight case.
Patent CA-2068104-A1 (CA)
Title: Polymer blends for optical applications
Inventor: JOHNSON PHELPS B
IPC: G11B7/2533
Filed: 1992-05-06
Abstract: ABSTRACT Polymer blends of styrene-acrylonitrile copolymers and polyglutarimide polymers for optical applications.
Patent CA-2070945-A1 (CA)
Title: Raising device for the cushion of a vehicle seat including a safety latching system
Inventor: FORGET DOMINIQUE
IPC: B60N2/30
Filed: 1992-06-10
Abstract: ABSTRACT OF THE DISCLOSURE      Side portions of a fixed support armature for the seat support first pins on which are articulated levers fixed on second pins rigid with a cushion-support armature having third pins cooperating with connecting rods articulated on fourth pins mounted in bearings rigid with the armature of the sitting portion of the seat. Hooks cooperate via fifth pins with levers and an abutment of one of these hooks causes a rotation about a vertical axis of a S-shaped lever which displaces a fork having a recessed central portion latching an assembly made by the levers, connecting rods and hooks. A transverse pin is mounted on arms rigid with the fourth pins to release the hooks and one of these fourth pins is extended by a control handle.
Patent CA-2071219-A1 (CA)
Title: Weakening wire supplied through a wire bonder
Inventor: GLIGA ALEXANDRU S
IPC: H01L21/607
Filed: 1990-12-07
Abstract: ABSTRACT OF THE DISCLOSURE    A technique for weakening an interconnection wire provided on a contact on an electronic component, in which the wire is weakened by means of an arc which is created between the wire and an electrode provided in an aperture in the wall of the bonding head of the wire bonder through which the wire is supplied, the arc being generated by an electric field between the wire and the electrode.  The electric field has a second portion in which its polarity is reversed, for controlling the dispersion of charged particles emitted from the wirer  The electric field may be created by an arc generator which includes a capacitor which discharges through a transformer.
Patent CA-2072670-A1 (CA)
Title: Bottle closure cap for two-component packings
Inventor: SCHUMACHER CLEMENS
IPC: B65D51/28
Filed: 1992-06-29
Abstract: ABSTRACT OF THE DISCLOSURE        The present invention relates to a bottle closure cap for two-component packing having a collar which extends into the bottleneck and bears a beaker via a thread of opposite direction to the bottle screw-on thread.  For ease in manufacture and use, the invention proposes that the collar (9) which extends into the bottleneck continue on top in a collar wall (11) with internal thread (14) in order to receive and hold a lid (28).           (Fig. 1)
Patent CA-2073318-A1 (CA)
Title: Point of sale packaging for small parts such as hardware articles or the like
Inventor: VON AGRIS RUDOLF
IPC: B65D5/20
Filed: 1992-07-07
Abstract: ABSTRACT            In point of sale packaging for small hardware items, a container that incorporates a transparent container part that is of plastic and is secured to a cardboard blank is used.  The cardboard blank is used to hang the point of sale packaging on a rod that is part of a self-service display.  In order to provide for more favourable separation of the point of sale packaging according to the materials from which it is made, it is proposed that the container be formed from a three-dimensionally folded section of the cardboard blank, this forming a lower tray, that then continues as a flat one-piece cardboard end piece that is used to hang the point of sale packaging on a self-service rack.  The side walls of the lower tray extend beyond the vertical plane of the cardboard end piece and form an insertable male part of a two-part push-fit coupling.  The receiving female part of the push-fit coupling is formed from a cap, the cap side walls of which snap over the tray side walls when the two parts are joined together.
Patent CA-2074570-A1 (CA)
Title: Resiliently mounted cantilever spring supported air spring suspension
Inventor: EVELEY NICHOLAS
IPC: B60G9/00
Filed: 1992-07-23
Abstract: ABSTRACT         A vehicle suspension of simple design which provides selectable axle heights with reference to the vehicle chassis with minimal component change.  The simple but rugged design provides maximum transverse stability by spring form and bushing design and by reducing shock absorber stroke length extends shock absorber life.
Patent CA-2074750-A1 (CA)
Inventor: RAGHAVACHARI PARTHA
IPC: G06F11/10
Filed: 1992-07-28
Abstract: An electronic circuit (10) for controlling and testing up to eight banks (12) of RAMs (14l - 14n) includes a controller portion (20) for controlling accessing of the RAM banks to permit read and write operations to be carried out, and for initiating testing of the RAMs as well.  The circuit (10) also includes a data path portion (22) for detecting parity errors in the data written to and read from the RAMs as well as for detecting errors which occur during testing initiated by thecontrol portion.  An interface portion (24) may also be provided to allow test commands, status information and error data to be communicated to and from the circuit (10) across a four-wire boundary scan bus.
Patent CA-2074880-A1 (CA)
Title: Allylic oxidation of olefins
Inventor: LYONS JAMES E
IPC: C07C27/12
Filed: 1992-07-29
Abstract: ABSTRACT      Allylic oxidation of olefins such as propylene or cyclohexene is performed with oxygen-containing gas and a metal, preferably iron, porphyrin ligand containing electron-withdrawing substituents such as halide, preferably fluoride, nitro or cyano substituted for hydrogen in the ligand.     a:olefin2
Patent CA-2076638-A1 (CA)
Inventor: THOMAS BRIAN J
IPC: H01J61/30
Filed: 1991-12-30
Abstract: A low-wattage metal-halide discharge lamp (10) has a quartz tube (12) of the double-ended type that forms a bulb (14) or envelope, a pair of electrodes, e.g., an anode (30) and a cathode (32), which penetrate into an arc chamber (16) inside the envelope (14), and a suitable amount of mercury plus one or more metal halide salts. The electrodes (30, 31) are each formed of a refractory metal, i.e., tungsten wire, extending through the respective necks (22, 24) into the arc chamber (16). Heat dissipation through the neck (22, 24) is controlled by constructing the quartz shanks (26, 28) so that they have shank segments of a desired surface area that ex-tend from the necks (22, 24) a distance equal to the length (50) of the arc chamber (16). A shank segment loading factor is defined as the rated power divided by the shank segment surface areas, and should be in a target range of 12 to 36 w/cm2. Lamps of this design achieve high efficacy at relatively low power, i.e., below 30 watts.
Patent CA-2076992-A1 (CA)
Title: Quiet impact printer mechanism
Inventor: RIMBEY ROGER J
IPC: B41J9/36
Filed: 1992-08-27
Abstract: ABSTRACT         An improved quiet impact printer mechanism for use with a typewriter or printer which includes a print hammer having a significant mass for impacting a character pad against an ink ribbon, paper and a platen.  A first embodiment has a drive means providing insignificant inertia through the use of a cam driven by an inexpensive, low torque reversible motor which is coupled to the hammer through a cam follower.  The cam arrangement may also propel the hammer toward the platen under a predetermined series of controlled velocities.  A second embodiment of a print-er mechanism, similar to that described above, includes a rotary member driven by a motor link, coupled to the print hammer for moving the hammer toward and away from the platen.  The motor link includes an acoustic noise reducing means.
Patent CA-2078069-A1 (CA)
Title: Cultivator
Inventor: TOWNSEND BRUCE R
IPC: A01C7/00
Filed: 1992-09-11
Abstract: ABSTRACT   In its preferred form, the present invention provides improved cultivating apparatus for leveling, cultivating and resowing lawns or fields. The invented apparatus includes: - an adjustment system for an elongate horizontal rack of cultivating discs, by which the rack may be raised and lowered accurately and evenly at both ends, so as to maintain a correct, horizontal orientation; - a corresponding adjustment system on an array of outlets from an elongate seedbox, whereby the outlets may all be opened or closed equally; - pivotable seed dispensing spouts; - a tilted mounting arrangement of the cultivating discs, which allows seed-dispensing spouts to be positioned over the widest part of cuts made by the discs, to drop seeds into said cuts in use; and - a row of ripping tines arrayed across the front of the apparatus, which are arranged to freely pivot forwards and upwards in use, to released clogged soil or other material by reversing, when necessary. 5184USCS,992/at
Patent CA-2079363-A1 (CA)
Inventor: ZAKOVA AGNESA
IPC: B65D81/36
Filed: 1992-09-29
Abstract: A container for storing or transporting pourable material can  be  converted  to  a  plant  protection  device  by  removing  a portion of the base of the container to allow the peripheral wall of the container to be engaged over the plant thus surrounding the plant.   The peripheral wall is formed from a double layer with annular space therebetween for receiving liquid such as water to maintain heat.
Patent CA-2081764-A1 (CA)
Title: Structure for supporting floor panels
Inventor: NAKA HIROMASA
IPC: E04F15/024
Filed: 1990-04-27
Abstract: ABSTRACT A structure 20 for supporting floor panels wherein a plurality of supporting legs 4 are disposed and secured on the base floor 3, each of said supporting legs includes a supporting column 7, adjacent supporting legs are connected by means of a stringer 15, floor panels 2 to be supported by the stringers are secured by means of the panel retainer 17, top end of the supporting column 7 is secured to the stringer 15, and the bottom end of the supporting column 7 provides a rhamen structure in which the bottom end is pin-connected to a base plate 5.  Floor panels 2 are supported at their periphery 2c by means of supporting elements 19 mounted integrally on the stringers 15, so that the vertical load to be applied to the floor panels 2 are transferred to the stringers 15 through the supporting elements 19.  Consequently, the deformation of the flange portion 2b of the floor panels can be avoided, and the floor panels are supported under stable condition.