baber/WOPTO huggingface dataset:
Patent CA-2017588-A1 (CA)
Inventor: STEDFELDT HANS
IPC: B01D29/62
Filed: 1990-05-25
Abstract: An improved method for separating solid particles from liquids, such as dewatering and thickening of sludge collected in a container (1), involves the use of at least one drainage unit (9) having doubled screened jacket walls (25, 26) defining a dewatering chamber (10). The liquid relieved of solids within the chamber is subjected to a turbulent motion acting against said screened jacket walls for obstruction of the solids deposition at the wall surfaces of the chamber facing the sludge in the container. The turbulent motion is obtained by a forced fluid F introduced in the chamber through one or more tubes (30, 31). The fluid may favourably be in form of compressed air or water returned from the reject system (14, 16).
Patent CA-2019705-A1 (CA)
Title: 3,5,6 -substituted derivatives of 1,2-0-isopropylidene-alpha-d-glucofuranose and intermediates for preparing these derivatives
Inventor: RONSEN BRUCE
IPC: C07H9/00
Filed: 1990-06-22
Abstract: ABSTRACT     Derivatives of 1,2-O-isopropylidene-a,D-glucofuranose and intermediates for preparing these derivatives are described.          These derivatives are useful for treating animals and mammals with inflammatory and/or autoimmune disorders such as autoimmune deficiency syndrome, psoriasis, atopic dermatitus, rheumatoid arthritis, osteoarthritis, scleroderma and systemic lupus erythematosus.
Patent CA-2019965-A1 (CA)
Title: Mobile work station for painter
Inventor: SCHUMACHER KEVIN H
IPC: B44D3/14
Filed: 1990-06-26
Abstract: ABSTRACT             MOBILE WORK STATION FOR PAINTER      A mobile work station for a painter or the like includes a frame and further includes a tray to hold paint containers, such as a paint pan, as well as tools, accessories and the painter's personal items. The tray may be segmented or divided into compartments for the paint pan and various articles.  Legs are pivotally mounted on the frame for ease of storage and transport, and the legs have stored and depending positions, respectively.  A removable cover is provided for the tray; and the cover may be disposed between the legs to further support the legs and to serve as as shelf during use of the mobile work station.
Patent CA-2020245-A1 (CA)
IPC: B29C65/56
Filed: 1990-06-29
Abstract: Abstract of the Disclosure A technique for permanently joining thermoplastic parts in a single stroke converts kinetic energy into thermal energy. In this technique, one of the thermoplastic parts includes a linear shaft while the other includes a cavity having the same general shape but being slightly smaller in its cross-section. The thermoplastic parts are permanently joined when the shaft is thrust into the cavity at a velocity that exceeds a predetermined minimum value which is a function of thethermoplastic materials used and the relative dimensions of the shaft and cavity. An interference fit between the shaft and cavity causes frictional heat to be generated which melts the contacting surfaces and thus welds the parts together after a brief cooling period.
Patent CA-2020691-A1 (CA)
Title: Electrode embossed with central vertical circulation channel and upwardly directed channels
Inventor: ULLMAN ANDERS
IPC: C25B9/19
Filed: 1990-07-09
Abstract: An electrode for electrolysis comprising an electrically conducting metal, the surface of which is embossed with at least one central, vertical circulation channel (2) and upwardly directed channels (1) in a herring-bone pattern, the upwardly directed channels (1) forming an angle of < 90 DEG  with a horizontal line in the plane of the electrode surface and communicating with the centrally positioned, vertically directed circulation channel (2). The circulation channel (2) may be provided with penetrating slits or holes (3). The electrode may be used for electrolysis in a membrane cell, for electrochemical recovery of metals, or for recovery of chlorine from sea-water. The electrode can be manufactured by embossing the surface through stamping with a die or through rolling with a figure roller.
Patent CA-2021589-A1 (CA)
Inventor: FURUYA TAKASHI
IPC: B22D11/06
Filed: 1990-07-19
Abstract: Molten metal is supplied to a pouring basin formed between cooling members, such as movable cooling drums. A closed space is formed at a meniscus area whereat any one of the cooling members starts to come into contact with the molten metal, and a soluble gas or a mixture of soluble and insoluble gases is supplied to and filled in the closed space, thereby covering the meniscus area with the gas or the mixture.  This arrangement enables a continuous casting of a thin metal sheet without surface cracks and having excellent surface characteristics.
Patent CA-2022067-A1 (CA)
Title: Electric load indicator
Inventor: MARTINEAU JACQUES
IPC: G01R19/145
Filed: 1990-07-26
Abstract: ABSTRACT OF THE DISCLOSURE        A load indicator is capable to indicate whether an electric load  supplied with current is operating properly.  The current supplying the load is first sensed and  a  corresponding  electric  signal  produced.    A controllable warning unit is activated in response to the electric signal to indicate that the load is operating properly.  The load indicator can be incorporated into electric apparatuses such as an electric switch, an A.C. power outlet, a tester apparatus, a panel-mount monitor, a circuit breaker, etc.
Patent CA-2022125-A1 (CA)
Title: Heat pump system
Inventor: MIYAUCHI SHUHEI
IPC: F25B39/04
Filed: 1990-07-27
Abstract: ABSTRACT OF THE DISCLOSURE         A heat pump and a method for operating a heat pump having at least one circuit for circulation of a refrigerant, said circuit comprising a compressor, a condenser as a high-temperature heat output means, an expansion valve and a low-temperature heat output means, said method comprising the steps of employing, as the condenser, a counterflow heat exchanger having a once-through flow path and a concentrical double-tube structure, passing a fluid to be heated and a refrigerant to be cooled through the condenser in absolute countercurrent flow with each other, withdrawing a heated fluid and a cooled refrigerant from the condenser and operating said condenser to obtain a supercool degree such that the following relationship is satisfied:   supercool degree 0.4 ? saturated refrigerant temperature -inlet temperature of fluid to be heated wherein supercool degree is defined as the temperature difference between the saturated refrigerant temperature and the outlet temperature of the refrigerant and the temperature difference between the saturated refrigerant temperature and the inlet temperature of the fluid to be heated is greater than or equal to 35°C, thereby enabling a high temperature hot fluid to be discharged with a large temperature difference from its inlet temperature.
Patent CA-2022344-A1 (CA)
Title: Process for the preparation of 1,1-dioxo-7-substituted cephems
Inventor: BLACKLOCK THOMAS J
IPC: C07D501/04
Filed: 1990-07-31
Abstract: TITLE OF THE INVENTION A PROCESS FOR THE PREPARATION OF 1,l-DIOXO-7-SUBSTITUTED CEPHEMS         ABSTRACT OF THE DISCLOSURE         The present invention relates to an improved process for the preparation of the compounds of formula (I)             (I) which involve the direct oxidation without N-protection of the compound of the formula (II)        (II)
Patent CA-2024454-A1 (CA)
Title: Expandable transluminal atherectomy catheter system and method for the treatment of arterial stenoses
Inventor: FISCHELL ROBERT E
IPC: A61B17/22
Filed: 1990-08-31
Abstract: ABSTRACT An expandable transluminal atherectomy catheter system (10) is provided which includes an expandable transluminal  atherectomy catheter (ETAC) (20), a balloon-on-a-guide wire (30), a sheathing catheter (40) and a rotator unit (60).  The balloon-on-a-guide wire (30) is advanced through an arterial system to a predetermined point.  The ETAC (20) within a sheathing catheter (40) is advanced over the guide wire cylinder (32).  Prior to injection of a medium the sheathing catheter (40) is pulled back to allow spokes (24) of ETAC (20) to expand.  The system (10) removes atheromatous plaque to a larger diameter than the diameter of the catheter (20) where it  percutaneously  penetrates  the  skin  by  the  anterograde transluminal  catheter whose distal  end can  be expanded  after insertion of the catheter (20) into an artery.
Patent CA-2025021-A1 (CA)
Title: Cycloolefin resin compositions
Inventor: KAWAMOTO KEIJI
IPC: C08L23/00
Filed: 1990-01-12
Abstract: The cycloolefin resin compositions of the present invention comprise a thermoplastic resin containing an olefin polymer having an alicyclic structure, specific stabilizers selected from phenolic stabilizers, organic thioether stabilizers, organic phosphite stabilizers, UV-ray absorbers and hindered amine stabilizers. The cycloolefin resin compositions show excellent thermal aging resistance and weathering resistance by the use of specific stabilizers, and therefore they are favorably used for forming optical instrument parts. Furthermore, the thermoplastic resin may be prepared from an olefin polymer having an alicyclic structure and a flexible polymer or flexible polymers. The incorporation of the flexible polymer especially improves the mechanical strength of the resultant products, and therefore the resin compositions are favorably used for machine parts, electronic parts, automobile parts, etc.
Patent CA-2026209-A1 (CA)
Inventor: COLEY JOHN
IPC: A61B10/00
Filed: 1990-02-16
Abstract: Un procédé de contrôle du cycle d'ovulation d'un mammifère femelle, consite à mesurer régulièrement la température de base du corps tout au long du cycle et à mesurer occasionnellement le niveau d'au moins un composant urinaire présentant une importance dans le cycle. On procède à la mesure du métabolite à des phases prédéterminées dans le cycle afin de vérifier que le niveau est cohérent avec un niveau prévu et, par conséquent, confirmer que le cycle dans son ensemble est cohérent avec une prévision.
Patent CA-2026625-A1 (CA)
Title: Weather-resistant polyacetal resin composition
Inventor: KATSUMATA TORU
IPC: C08L59/00
Filed: 1990-10-01
Abstract: ABSTRACT      Weather-resistant polyacetal resin compositions and molded articles formed of the same include a polyacetal base resin, and a weather-resistant effective amount of a weather stabilizing package comprised of (i) a weather stabilizer that is at least one selected from the group consisting of benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides and hindered amines (ii) a homopolymer or copolymer of acrylic or methacrylic acid, or ester derivatives thereof, and (iii) a fluororesin.
Patent CA-2031173-A1 (CA)
Inventor: YURKEWYCH GEORGE J
IPC: A61M5/46
Filed: 1990-11-29
Abstract: ABSTRACT       A   pudendal/paracervical   block   anesthesia needle assembly is provided.  The assembly includes a needle guide which limits the extent to which a needle  may  be  inserted  within  a  patient.   The needle guide includes a housing to which a cannula is secured.   A needle assembly including a needle hub and needle are insertable within the guide such that the needle  is positioned within the cannula and the needle hub within the guide housing.   The needle guide housing  includes  a  recess  including two pairs of parallel walls.  A pair of abutments, one positioned distal to the other, extend within the  recess.   The  needle hub  includes  a  contact surface  which  contacts one  of  the two  abutments depending  upon  its  rotation  al  position.   The extent  to  which the  needle projects  outside the cannula is determined by which abutment is engaged by the contact surface of the hub.
Patent CA-2032614-A1 (CA)
Title: Rotational mold apparatus
Inventor: PIAZZA CHARLES L
IPC: B29C33/26
Filed: 1990-12-18
Abstract: ROTATIONAL MOLD APPARATUS               Abstract of the Disclosure A shell mold support apparatus for rotationally casting thermoplastic polymer particles onto a heated casting surface to form a thin polymer shell conforming to the shape of a heated casting surface includes a base framework that supports a bottom shell mold; a cover carrier is supported on the base framework so as to either open or close a cover or top shell mold with respect to the bottom shell mold; and a hinged support couples the cover carrier to the base framework for movement against an opening stop.
Patent CA-2033661-A1 (CA)
Title: Cover for a tack memo pad
Inventor: MATSUGUCHI TOMIKICHI
IPC: B42D5/00
Filed: 1991-01-04
Abstract: ABSTRACT OF THE DISCLOSURE    A cover for a tack memo pad made up of a plurality of stuck-together sheet materials having formed thereon each one layer of re-adherent adhesive.  It comprises constituent sheet material, a release layer formed on one principal surface of the aforementioned constituent sheet material by application of an adhesive, an adhesive layer formed by application of an adhesive over a portion with a layer of release agent already formed thereon, a seal substrate formed on the surface of the adhesive layer and a printed layer formed on the surface of the adhesive layer by printing, and within an area where the release layer is formed, partly releasable pieces of seal can be provided.          With this type of cover for a tack memo pad it is possible to provide partly releasable pieces of seal on the seal substrate and the adhesive layer where the release layer is formed.   Hence, the pealed-off pieces of seal can be stuck to any desired places.  According to this invention, therefore, it is possible to provide a cover for a tack memo pad satisfactory for children, well meeting their needs.
Patent CA-2035348-A1 (CA)
Title: Adjustable fastening device with spinal osteosynthesis rods
Inventor: VIGNAUD JEAN-LOUIS
IPC: A61F2/44
Filed: 1991-02-05
Abstract: The invention relates to a device for fixing spinal osteosynthesis rods on pedicle screws (1) of the type comprising a head (4) in the form of a tuning fork defining two branches (4a, 4b) receiving between them a rod (6) to be fixed, which rod is blocked in its seat (5) by a locking screw (7), characterised in that it additionally comprises, passed onto the rod (6) and inserted between the locking screw (7) and the bottom of the said seat (5), a slotted ring (9) whose opposite outer faces (10) directed towards the said locking screw (7) and the said bottom are convex and are received in complementary concave surfaces (11, 12) formed on the end of the locking screw (7) and the bottom of the seat (5) for receiving the rod (6), the said ring (9) permitting, before the screw (7) is locked, a certain angular clearance of the rod (6) relative to the axis of the screw (1). 
<??>Application to spinal osteosynthesis. 
<IMAGE>
Patent CA-2036896-A1 (CA)
Title: Shielded electromagnetic transducer
Inventor: GRIFFITH NEIL J
IPC: A61N2/02
Filed: 1991-02-22
Abstract: ABSTRACT      An electrical to electromagnetic transducer for applying electromagnetic energy to damaged potions of the living body, which provides high efficiency generation of electromagnetic fields  for electromagnetic therapy by directing electro-magnetic energy to the damaged body part.   Electromagnetic energy is initially generated by a dipole consisting of a bar of high permeability material wrapped with an electrically conductive coil.  The dipole is placed between a conductive shield   and the damaged body part.   An electrical signal passes through the coil which causes a magnetic field to be generated through and around the high permeability material.          The field radiation pattern of the dipole is directed toward the damaged body part by a conductive shield.  Magnetic fields which are generated away from the damaged body part intersect the conductive shield and establish eddy currents.  These eddy currents in turn generate magnetic fields opposite and nearly equal to the magnetic fields generated by the electromagnetic source.   These resultant redirected electromagnetic fields then reinforce the electromagnetic field directed towards the damaged body part and diminish the electromagnetic field directed away from the damaged body part.
Patent CA-2038221-A1 (CA)
Inventor: NERONE LOUIS R
IPC: H05B41/18
Filed: 1991-03-14
Abstract: A ballast circuit for operating a metal halide lamp by applying DC excitation during its start, glow and run modes is disclosed. The type and values of the circuit components of the ballast circuit are selected to provide automatic, sequential and desired transfer functions as the impedance value of the metal halide lamp transitions from its value occurring during the start, glow and run modes of operation. The ballast circuit has an input stage that is easily adapted to present a high power factor to the AC power source supplying the metal halide lamp. Further, the ballast circuit generates a signal for more easily starting the lamp and having a relatively high DC level upon which are developed pulse signals.
Patent CA-2040405-A1 (CA)
Title: Recycle of oily refinery wastes
Inventor: BARTILUCCI MARK P
IPC: C10G9/00
Filed: 1990-09-17
Abstract: RECYCLE OF OILY REFINERY WASTES                 ABSTRACT       Petroleum refinery waste stream sludges are recycled by segregating the sludges according to their oil content. Sludges of high oil content are developed and then injected into a delayed coking unit during the coking phase so that they are converted to coke and liquid coking products.  High water content sludges are used to quench the coke during the quench phase of the coking cycle, with minimal increases in coke volatile matter.  The process increases the capacity of the delayed coking unit to process and recycle refinery waste sludges and produce a coke of lower volatile content.
Patent CA-2045638-A1 (CA)
Title: Feeder for particulate material
Inventor: DARBY NEIL A
IPC: B65G53/22
Filed: 1990-01-25
Abstract: A feeder for particulate material for connecting a mechanical feeding device (14) to a pneumatic conveying line comprises a funnel (7) formed of a gas pervious material which is mounted in a closed outer housing (1) formed of an impervious material wherein the walls of the funnel and the outer housing together defining a plenum chamber (10) which is provided with an inlet (11) for connection to supply of conveying gas under pressure. The funnel (7) is adapted to form a sealing engagement with the outlet of the mechanical feeding device (14) and the funnel (7) at or towards its narrow end communicates with the pneumatic conveying line. In use, conveying gas, under pressure, enters the plenum chamber (10) and then passes through the walls of the funnel (7). The particulate material delivered to the funnel (7) by the mechanical feeding device is flushed out of the funnel and into the conveying line by the conveying gas. The feeder enables a uniform flow of particulate material using one pressurized gas supply for conveying particulate material from bulk storage to discharge.
Patent CA-2045922-A1 (CA)
Title: Reductive cosmetic composition for permanent containing an n-(mercapto alkyl) succinamic acid or an n-(mercapto alkyl) succinimide acid derivative and its use in 2 process of permanent waving of the hair
Inventor: MAIGNAN JEAN
IPC: C07C323/41
Filed: 1991-06-28
Abstract: This composition contains, in a suitable vehicle, a reducing agent having the following general formula: 
<IMAGE>
 in which:
 n is 2 or 3
 A represents a divalent radical chosen from:
 (i) -(CH2)m-, m being 2 to 3, 
<IMAGE>
 R3 and R4, which may be identical or different, representing an alkyl radical having from 1 to 4 carbon atoms, or R3 and R4, together with the adjacent carbon atoms, form a cyclohexane ring, and 
<IMAGE>
 R5 and R6, which may be identical or different, representing a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms, or R5 and R6, together with the adjacent carbon atoms, form a benzene ring,
 R1 represents a hydrogen atom, and
 R2 represents a hydroxyl radical, or
 R1 and R2, taken together, form a single bond, and the salts with an organic or inorganic base of the abovementioned compounds in free acid form. 
<??>Use of the composition for the first stage of a permanent hair shaping operation.
Patent CA-2046409-A1 (CA)
Title: Compost processing tool
Inventor: SAINSBURY J DOULGAS
IPC: B25F1/00
Filed: 1991-07-05
Abstract: The present invention is directed to a compost processing tool having a blade at one end thereof suitable for chopping, cutting and turning compost. The tool also includes a hollow shaft extending from the blade with the shaft having a host of openings through a wall of the shaft with the holes spaced in the length of the shaft. This hollow shaft may be used to provide a lever for the blade used during chopping, cutting and turning of the compost and the shaft also serves as a breather tube when placed in a volume of compost with the shaft partially buried in the compost.
Patent CA-2047024-A1 (CA)
Title: Method for preventing agglomeration of powder
Inventor: ONAKA TADAO
IPC: B01J2/30
Filed: 1991-07-15
Abstract: ABSTRACT   A method for preventing agglomeration of powder, characterized in that a polyvinyl pyrrolidone and/or a vinyl pyrrolidone-vinyl ester copolymer is incorporated as an anti-agglomeration agent to the powder.
Patent CA-2047699-A1 (CA)
Title: Expanded porphyrins: large prophyrin-like tripyrroledimethine-derived macrocycles
Inventor: SESSLER JONATHAN L
IPC: A61K51/00
Filed: 1990-03-06
Abstract: The present invention involves a novel tripyrroledimethine-derived "expanded porphyrin" (texaphyrin), the synthesis of such compounds, their analogs or derivatives and their uses. These expanded porphyrin-like macrocycles are efficient chelators of divalent an trivalent metal ions. Metal complexes of these compounds are active as photosensitizers for the generation of singlet oxygen and thus potentially for inactivation or destruction of human immunodeficiency virus (HIV-1), mononuclear or other cells infected with such virus and tumor cells as well. A variety of texaphyrin derivatives have been produced and many more are readily obtainable. Various metal (e.g., transition, main group, and lanthanide) complexes with the texaphyrin and texaphyrin derivatives of the present invention have unusual water solubility and stability which render them particularly useful. These metallotexaphyrin complexes have optical properties making them unique as compared to existing porphyrin-like or other macrocycles. For example, they absorb light strongly in a physiologically important region (i.e. 690-880 nm). These complexes also form long-lived triplet states in high yield and act as efficient photosensitizers for the formation of singlet oxygen. These properties, coupled with their high chemical stability and appreciable solubility in polar media such as water add to their usefulness.
Patent CA-2047908-A1 (CA)
Title: Asymmetric water jet atherectomy
Inventor: DRASLER WILLIAM J
IPC: A61M25/00
Filed: 1991-07-25
Abstract: ASYMMETRIC WATER JET ATHERECTOMY               ABSTRACT OF THE DISCLOSURE      A technique for ablation and removal of plaque deposits from the arterial, venous, vascular graft or other  tissue  wall  of a  patient.     Ablation  is accomplished  by  directing  a  high  pressure  jet  of sterile saline solution at the plaque deposit.   The high pressure jet is located at the distal end of a catheter which is advanced through the vascular system to the site of the plaque deposit.   Removal of the debris is via an evacuation lumen within the catheter.    The arterial wall is protected from damage by the catheter design which directs the high pressure jet towards a portion of the distal end of the catheter which  serves as  a target.   The distal  end of  the catheter  is  placed  such  that  the  plaque  or  other deposit to be ablated is positioned between the high pressure jet and the target.    An optional ultrasonic transducer array located adjacent the high pressure jet and the evacuation lumen permits  the  attending  physician  to  monitor  the procedure.    A balloon may be used to hold the catheter against the deposit allowing it to protrude into the ablation jet and be removed from the vessel.