baber/WOPTO huggingface dataset:
Patent NO-141501-C (NO)
Inventor: FALLENIUS KAI
IPC: B01F3/04
Filed: 1974-06-05
Abstract: 1465801 Dispersing gases in liquids; froth flotation apparatus OUTOKUMPU OY 3 June 1974 [5 June 1973] 24480/74 Heading B1C and B2X In a method of dispersing a gas in a liquid or slurry, (e.g. for froth flotation) by means of a rotor within a stator, the increase in hydrostatic pressure with increasing depth is compensated by a hydraulic pressure correspondingly changing with depth in order to keep the total liquid pressure substantially constant over the surface over which the gas is dispersed; this is done by arranging for the ring of liquid between the rotor and stator to increase in thickness with depth so that the centrifugal force acting on the liquid ring produces the compensating dynamic pressure. As shown in Fig. 1 gas is supplied through a hollow shaft and dispersed through passages 5 between which are "grooves" 8 through which the slurry circulates; the envelope of the rotor is cylindrical while the stator is shaped so that the clearance between them increases downwardly. In other embodiments the rotor may narrow downwardly while the inner envelope of the stator is cylindrical, or both may increase in diameter downwardly with increasing clearance (Figs. 4-7, not shown). In Fig. 1 the "grooves" 8 are closed at the bottom, but they may be open at both ends or shrouded at the top (see Figs. 2 and 3, not shown). The gas passages 5 in the rotor may be omitted (Fig. 8, not shown) and the gas introduced above the rotor through a downcover surrounding the rotor shaft (Fig. 12, not shown).
Patent NO-167396-C (NO)
Inventor: LINA MARIE-JOSE
IPC: C07C271/08
Filed: 1986-11-06
Abstract: 1. Fluorine-containing acrylic monomers characterized in that they correspond to the general formula : (II)   see diagramm : EP0225826,P20,F1   in which RF denotes a perfluoroalkyl radical with a straight or branched chain containing from 2 to 20 carbon atoms, R denotes a hydrogen atom or a methyl radical, A denotes a divalent chain sequence of 2 to 9 carbon atoms, which may comprise one or more oxygen atoms, W-Q denotes a divalent chain sequence chosen from those of formulae : -(CH2 )p -O-   see diagramm : EP0225826,P20,F2     see diagramm : EP0225826,P20,F3   -(CH2 )p -O-(CH2 )q -O- -(CH2 )p -S-(CH2 )q -O- -(CH2 )p -(OCH2 CH2 )q -O- -(CH2 )p -SO2 -(CH2 )q -O-   see diagramm : EP0225826,P20,F4     see diagramm : EP0225826,P20,F5   -CH=CH-(CH2 )p -O- -(CH2 )p S- -(CH2 )p NH-   see diagramm : EP0225826,P20,F6     see diagramm : EP0225826,P20,F7   R' denotes a hydrogen atom or an alkyl radical containing 1 to 4 carbon atoms, each of p and q, which are identical or different, denotes an integer ranging from 1 to 20.
Patent NO-178700-C (NO)
Inventor: SUH KYUNG WON
IPC: C08J9/12
Filed: 1990-11-07
Abstract: Alkenyl aromatic thermoplastic synthetic resinous elongate foam bodies having a machine direction, a traverse direction and closed noninterconnecting gas-containing cells are prepared using at least 70 percent by weight of 1,1,1-trifluoroethane and or 1,1,1,2-tetrafluoroethane as a blowing agent or part of a blowing agent mixture. These foam bodies have an average cell size of 0.01 to 0.3 millimeters, a density of from 0.75 to 6.0 pounds per cubic foot, an absolute dimensional stability of less than 4 percent in any direction when measured by the test designated ASTM D2126/C578, and preferably a minimum cross-sectional dimension of at least 0.25 inch, a cross-sectional area of at least 8 square inches, a water vapor permeability not greater than 1.8 perm inches. A cell size enlarger agent may be necessary for cell sizes in the 0.2-0.3 range.
Patent NO-175717-C (NO)
Inventor: BRUN CLAUDE
IPC: C08F4/62
Filed: 1990-12-20
Abstract: Process for the synthesis of catalytic solids of Ziegler type or of solid transition metal components of such catalytic solids, in which a suspension of these solids or components is prepared in an inert liquid medium, and the suspension is then filtered, washed and dried to result in a pulverulent product constituting the said catalytic solid or the said component. 
<??>The operation is carried out in a single polyfunctional pivoting reactor which comprises a reaction volume (7) and a filtration volume (6), the said volumes being arranged so that the movement from one to the other is obtained by pivoting the reactor through 180 DEG . 
<??>The suspension is produced in the reaction volume when the latter is in a lower space position, while each of the operations of filtering, drying and optionally washing is carried out in the filtration volume when the latter is in a lower space position after pivoting the reactor. 
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Patent CA-2001934-C (CA)
Inventor: TERAO NOBORU
IPC: B28D5/02
Filed: 1989-10-31
Granted: 1994-10-18
Abstract: ABSTRACT OF THE DISCLOSURE A  rod  base  material  for  forming wafers  for  electronic devices  is  formed  from a  plurality of  rod members  made of selected materials.   The rods are assembled in parallel and are bonded with each other into an integrated body.  In one aspect of this invention, a mirror-finished bonding face is formed at the outer surface of each of the rod members, and is cleaned by a surface treatment using chemicals.  Subsequently, respective rod members are assembled in parallel and brought into contact with each other at their respective bonding faces.  The thus prepared and assembled rod members are maintained in a heated atmosphere until they combine into an integrated body to provide the base material.   The rod base material  is  thereafter subjected to slicing to provide wafers used for forming electronic devices.          Since the rod base material has a structure in which a plurality of the rod members are assembled in parallel and bonded with each other into an integrated body, the overall diameter of the rod base material can be significantly large compared to the diameter of individual rods.  Accordingly, the diameter of wafers obtained by slicing such rod base material is also increased remarkably, and  the  cost per  electronic  device  formed  on  the wafer  is correspondingly reduced.
Patent CA-2009904-C (CA)
Title: Eccentric motion motor
Inventor: JACOBSEN STEPHEN C
IPC: H02N1/08
Filed: 1990-02-13
Granted: 1997-09-09
Abstract: An eccentric motion motor includes a hollow cylindrical stator in which is positioned a cylindrical armature in rolling engagement with the stator.  Elongate conductive strips are disposed in the inside wall of the hollow of the stator to extend substantially the length thereof, with the strips being circumferentially spaced about the stator hollow.  The conductive strips are coupled to a commutator voltage source which applies a voltage to successive ones of the conductive strips to produce an electrostatic force which attracts the armature and causes it to roll in the hollow of the stator.  The armature may be made either of a conductive material or a dielectric material.
Patent CA-2011054-C (CA)
Inventor: HAYWARD TERRY C
IPC: C08J9/10
Filed: 1990-02-27
Granted: 1994-03-01
Abstract: ABSTRACT OF THE DISCLOSURE      A process in which a blowing agent dispersion is used for producing poly(vinyl chloride) that is particularly well suited for use in insulation covers and the insulation covers made from the resultant poly(vinyl chloride).
Patent CA-2014504-C (CA)
Title: Induction melting of metals without a crucible
Inventor: PIWONKA THOMAS S
IPC: H05B6/34
Filed: 1990-04-12
Granted: 1997-12-02
Abstract: An apparatus for inductively melting a quantity of metal  without  a  container  comprises  an  induction  coil having a plurality of turns defining a volume for receiving the quantity of metal, the induction coil being adapted to exert an electromagnetic force on the metal which increases toward the bottom portion of the metal, a means for energizing the coil, a support means for supporting the metal from below and having an opening therethrough, and means for maintaining the support means at a preselected temperature.
Patent CA-2016516-C (CA)
Title: Vacuum cleaner
Inventor: YAMAGUCHI SEIJI
IPC: A47L9/28
Filed: 1990-05-10
Granted: 1999-08-17
Abstract: A vacuum cleaner comprises: a blower motor; a dust detector responsive to a dust particle sucked due to rotation of the blower motor for producing a dust detecting signal when detecting each of dust particles passing a portion in a sucking passage of the dust; counter responsive to the dust detection signal for counting the number of the dust particles for a given interval; and input power controller responsive to an output signal of the counter for controlling input power of the blower motor by selecting an input power value from plural preset input power values in accordance with the number. Controlling input power may be performed in accordance with pulse width indicative of dust particle size or the counted number may be modified by pulse width. Another vacuum cleaner further comprises plural light emitting diodes for indicating the number counted to show an operator uncleanness of the floor.      The controller comprises a microprocessor which can control a thyristor provided in series with the blower motor directly. However, in a vacuum cleaner where the thyristor locates in the housing, on the other hand, the microprocessor locates in a handle portion, a D/A converter and a phase control circuit may be provided in the housing.
Patent CA-2019560-C (CA)
Title: Reusable diaper
Inventor: WIPPLER HEATHER
IPC: A61F13/76
Filed: 1990-06-21
Granted: 1993-02-02
Abstract: ABSTRACT OF THE DISCLOSURE         There  is provided a new and useful  reusable diaper comprising inner and outer substantially rectangular layers of absorbent material, a liquid impervious layer between the inner and outer layers, and first and second pockets on the inner layer, and wherein the open sides of the first and second pockets are oriented toward each other.
Patent CA-2021348-C (CA)
Title: Elastic store memory circuit
Inventor: IZAWA NAOYUKI
IPC: H04L7/00
Filed: 1990-07-17
Granted: 1994-05-24
Abstract: An elastic store memory circuit includes first and second elastic store memories.  Each of the first and second elastic store memories generates a phase comparison signal when a phase difference between a write timing and a read timing is within a predetermined phase range.  The elastic store memory circuit also includes a selector which selects either the input data read out from the first elastic store memory or the input data read out from the second elastic store memory, and a slip signal generator for generating a slip signal on the basis of a write reset timing at which the first and second elastic store memories are reset, a read reset timing at which the first and second elastic store memories are reset, and the phase comparison signal.  The slip signal indicates which one of the write reset timing and the read reset timing precedes the other one.
Patent CA-2027558-C (CA)
Inventor: BRASILE JEAN-PIERRE
IPC: H01J25/00
Filed: 1990-02-16
Granted: 1997-09-30
Abstract: The invention relates to microwave generator using an electron beam and the phenomenon of a virtual oscillating cathode to obtain a better spectral energy and conversion performance than conventional vircator generators. This is done by making separate use of the electrons transmitted (82) or reflected (81) from the virtual cathode (80) to convert their kinetic energy into microwave energy (4).
Patent CA-2029678-C (CA)
Inventor: PETTIT GEORGE R
IPC: C07K11/00
Filed: 1990-11-09
Granted: 1999-10-26
Abstract: A new cytostatic depsipeptide, designated "dolastatin 14", was isolated from the Indian Ocean shell-less mollusk Dolabella auricularia. Dolastatin 14 inhibited growth of the PS leukemia with ED50 0.0018 g/mL. Pharmaceutical preparations and therapeutic regimens utilizing Dolastatin 14, its synthetic counterpart and pharmaceutically active derivatives are disclosed. Dolastatin 14 has the structural formula:     (see formula I)
Patent CA-2030092-C (CA)
Title: Electrocatalytic coating
Inventor: CARLSON RICHARD C
IPC: C25B11/06
Filed: 1990-11-15
Granted: 1998-11-03
Abstract: A coating is now disclosed which is especially serviceable as an improved electrocatalytic coating for an electrode.  The coating is a crystalline coating of mixed oxides.  The oxides are of iridium, ruthenium and titanium, in very specially defined proportions.  When the coating is present on an electrically conductive metal substrate that can serve as an electrode, such electrode has, in combination, the characteristics of reduced oxygen evolution in a membrane cell, low chlorine electrode potentials, plus reduced coating weight loss in a caustic environment.
Patent CA-2032742-C (CA)
Title: Method of producing brassinosteroids
Inventor: SAIMOTO HIROSHI
IPC: C12R1/91
Filed: 1990-12-19
Granted: 1995-08-22
Abstract: A method of producing a brassinosteroid is disclosed, wherein crown gall cells capable of producing the brassinosteroid are cultured in a culture medium in the presence of a cultivation aid selected from auxins, sterols, squalene, casamino acid and mixtures thereof.
Patent CA-2034656-C (CA)
Inventor: GULYA THOMAS G
IPC: D21F7/08
Filed: 1991-01-21
Granted: 1994-12-27
Abstract: STRUCTURE FOR EXTRACTING WATER FROM A PAPER WEB IN A PAPERMAKING PROCESS      Abstract of the Disclosure A composite structure for extracting water from a wet paper web in a papermaking process.  The structure includes a base or substrate and a layer of water permeable polymeric foam, such as polyurethane foam, is secured to a surface of the substrate and an outer web supporting layer of water permeable polymeric material is bonded to the outer surface of the foam layer.  The outer polymeric layer provides a smooth web supporting surface having toughness and abrasion resistance.
Patent CA-2035425-C (CA)
Title: Overdischarge and overvoltage protection circuit for a battery in a portable and mobile communication system
Inventor: KANG SEO-WON
IPC: H02J7/00
Filed: 1991-01-31
Granted: 1995-12-12
Abstract: There   is   disclosed   a  circuit   for   protecting   an overdischarge  and  overvoltage  of a  battery  in  a  portable, mobile,  and radio communication system comprising  a  low-power detection  unit, a low-battery signal detection unit, a  battery termination  detection  unit,  a  power  supply  controller,   a reference voltage converter.
Patent CA-2035614-C (CA)
Title: Jacketed paint pellet
Inventor: MORRIS JAMES K
IPC: F42B12/40
Filed: 1991-02-04
Granted: 2000-06-13
Abstract: A jacketed paint pellet (10) comprising a jacket (12) having a paint pellet (14) attached thereto. The jacket (12) includes a body (16) having a trailing end (18) and a leading end (20) with a forward facing mounting surface (22). Ribs (28) project radially outward from the body (16) to support the body within the bore of a gun barrel and to guide and stabilize the jacketed paint pellet (10) in flight. Flange members (30) extend laterally from the ribs (28) for additional support and stability. A counterweight portion (36) extends axially in the interior (32) of the body (16) to counterbalance the weight of the paint pellet (14).
Patent CA-2037411-C (CA)
Title: Milbemycin ether derivatives
Inventor: MORISAWA YASUHIRO
IPC: C07H19/01
Filed: 1991-03-01
Granted: 2001-10-23
Abstract: Compounds of formula (I): (see formula I) [in which: R1 is hydrogen, halogen, cyano, nitro, optionally substituted alkyl, alkoxy, alkoxyalkoxy, or a group of formula: -(CH2)n NHR9 -(CH2)n NR9COR6 -(CH2)n NR9COCOR6 -(CH2)n NR9COCOOOR7 -(CH2)n NR9CHR6NHCOR6 -(CH2)n NR9CHR6NHCONHR6 -(CH2)n NR9CHR6NHCOOR7 -(CH2)n NR9C(=Y)YR6 -(CH2)n NR9C(=Y)NR6R6 -(CH2)n NR9C(=Y)NR6NR6R6 -(CH2)n NR9C(=Y)NR6NHZ -(CH2)n NR9C(=NR11)NHR11 -(CH2)n NR9C(=NR11)R6 -(CH2)n NR9SO m R6 or wherein: m is 1 or 2; n is 0, 1 or 2; R6 is hydrogen or a variety of organic groups; R7 is alkyl, cycloalkyl, or aralkyl; R9 is hydrogen or alkyl; R11 is any of R6, or cyano, nitro, -COOR7 or -COR6; Y is an oxygen or a sulfur; Z is -COOR7, -COR6 or -SO2R6:      A is a group of formula:   -CR2=CR3-CHR4-or   wherein R2, R3 and R4 are hydrogen, halogen, alkyl or alkoxy;      R5 is methyl, ethyl, isopropyl or sec-butyl; and X is hydroxy, optionally substituted alkanoyloxy or hydroxyimino and salts and esters thereof have valuable anthelmintic, acaricidal and insecticidal activities.      Methods of preparing the compounds are also provided.
Patent CA-2040552-C (CA)
Title: Method and apparatus for identifying and locating a leak in the inner liner of a vessel having a laminated wall structure
Inventor: KIDD JOHN A
IPC: G01M3/18
Filed: 1991-04-16
Granted: 1997-05-06
Abstract: A vessel for containing an electro-conductive fluid, the vessel having a laminated wall structure and including an outer structural shell, an inner corrosion-resistant lining  made  of  electrically  non-conductive  material, constituting a barrier between the structural shell and electro-conductive fluid in the vessel.   An electrically resistive medium is mounted between the structural shell and the corrosion-resistant lining, the resistive medium carrying an array of electrodes mounted in spaced apart relationship  at  fixed  and  known  locations.    A  main electrode  is mounted in the vessel extending into the electro-conductive  fluid  which forms  an  electric path between the main electrode and the resistive medium in occurence of a fault in the corrosion-resistant liner, such that electro-conductive fluid is allowed to contact the resistive medium.  An electronic controller impresses a voltage difference across electrodes of the array for causing  electric  current  to  circulate  through  the resistive medium.   The controller obtains voltage drop measurements   across   the   resistive   medium   between electrodes of the array and the  contact point of the electro-conductive  fluid  on  the  resistive  medium,  to determine the location of the fault, each of the voltage drop measurements being between a respective electrode of the array and the main electrode.
Patent CA-2045834-C (CA)
Title: Herbicidal compositions
Inventor: TAKEMATSU TETSUO
IPC: A01N33/08
Filed: 1991-06-27
Granted: 1996-09-17
Abstract: Herbicidal compositions comprising as active ingredients a triazine derivative represented by general formula [I]:                                  ... [I]   and phenoxy type herbicides represented by general formula [II]:                                    ... [II]   and herbicidal compositions comprising as active ingredients a triazine derivative represented by general formula [I]:                                     ... [I]   phenoxy type herbicides represented by general formula [II]:                             ... [II]   and urea type herbicides represented by general formula [III]:                           ...[III]     By synergistic effects of the active ingredients, the herbididal compositions show a high herbididal effect at low dosage and have such a wide range of herbicidal spectrum that the compositions exhibit their high herbididal effect not only against broad-leaved weeds but also against Gramineae weeds, etc. The compositions have flexibility of treatment to exhibit effectiveness as compared to known herbicides for field crops and crops are free from injury.
Patent CA-2048442-C (CA)
Title: Process for producing 3,5-di(.alpha.-methylbenzyl)salicylic acid derivative, and use of polyvalent-metal-modified product thereof as color developer
Inventor: TANABE YOSHIMITSU
IPC: B41M5/333
Filed: 1991-08-06
Granted: 1996-12-10
Abstract: A color-developing sheet using, as a color developer, polyvalent-metal-modified products of salicylic acid compounds composed mainly of a 3,5-di(.alpha.-methylbenzyl)salicylic acid derivative obtained by reacting a salicylic acid ester with an a-methylbenzyl halide in the presence of an acid catalyst and hydrolyzing the reaction product.  The color-developing sheet has excellent colour developability at low temperatures and gives a color of excellent water resistance.
Patent CA-2048816-C (CA)
Title: Window blind slat ladder and tilt drum
Inventor: YANNAZZONE ROBERT
IPC: E06B9/307
Filed: 1991-08-08
Granted: 1995-05-02
Abstract: A venetian blind tilt drum eliminates the separate staples, crimped sleeves and bullet-like members normally used to connect the vertical legs of a cord tilt ladder to the drum.  The tilt drum is of one-piece construction and includes a top surface from which preferably three cord impalement integral barbs extend.  A first barb of generally pyramidal shape is positioned on an upper top surface of the drum on the drum vertical centerline, parallel to the longitudinal axis of the drum and with a pointed vertex of the barb extending above that axis.  A pair of similar second and third barbs also integral with the drum are offset from the drum vertical centerline, with each pointed vertex also parallel to the drum longitudinal axis but extending in an opposite direction than the first barb.  Depending on the particular tilt ladder construction the upper distal ends of the tilt ladder both may be impaled on the first barb or one distal end impaled on the second barb and the other distal end impaled on the third barb.  Each barb may include at least one notch adjacent to its base so as to retain portions of a pierced distal end or ends securely on the tilt drum. After the vertical legs of the tilt ladder have been affixed to the drum barbs, the drum is rotatable by rotary action of a blind slat tilt wand, tilt gearing and a tilt rod shaft.
Patent CA-2054607-C (CA)
Title: Method for preparing transformed plant
Inventor: KANEKO TAKAFUMI
IPC: C12N13/00
Filed: 1991-10-31
Granted: 1995-08-01
Abstract: A transformed plant of Gramineae is prepared by culturing an anther of Gramineae in a callus induction medium and, at a stage immediately before the microspore       begins to cause division or during the initial division, transducing a genetic substance into the microspore cell through a pore formed by a laser pulse thereby to express genetic information of the genetic substance.          According to the present invention, it is unnecessary to prepare protoplast and therefore, time and operations for transformation can be greatly reduced.  Since haploid cells are transformed, the character transduced is conveyed without separating at a later generation.  In addition, difficulties in experiments between species and strains are minimized so that it is easy to apply the present invention to practical species.  According to the present invention, large pores can be formed as compared to the electroporation method so that DNA or substances having a large molecular weight can be introduced.
Patent CA-2055007-C (CA)
Title: Method of and apparatus for running a wireline to a steering tool coupled with a downhole mud motor
Inventor: RAINS MARVIN
IPC: E21B23/14
Filed: 1991-11-06
Granted: 1996-03-19
Abstract: A method of running a wireline to a steering tool coupled with a downhole mud motor.  Firstly, secure a drill string from a swivel suspended from a draw works of an oil rig such that the drill string is rotatable.  The swivel has an axial passage with a first end in alignment with an interior bore  of  the drill  string  and a  second  end. Secondly, secure to the second end of the axial passage of the swivel a hose communicating with surface mud pumps thereby permitting drilling mud to be pumped through the hose to the axial passage of the swivel and down the interior bore of the drill string.  The hose is connected to the swivel with a connector having a primary passage through which mud from the hose passes and a secondary passage which is  substantially aligned with the  axial passage of the swivel.   Thirdly, secure a sheave to the swivel above and adjacent to the axial passage, such that a wireline passing over the sheave is substantially in axial alignment with the axial passage.  Fourthly, extend a wireline over the sheave, through the secondary passage of the connector, through the axial passage of the swivel, and down the drill string to a steering tool coupled with a mud motor positioned downhole.