baber/WOPTO huggingface dataset:
Patent CA-2024563-A1 (CA)
Title: 2-fluorocyclopropylacetic acid esters, processes for their preparation and their use as pesticides
Inventor: HOMBERGER GUNTER
IPC: C07C235/06
Filed: 1990-09-04
Abstract: ABSTRACT            There are provided new 2-fluorocyclopropylacetic acid esters of general formula I              (I) in which R1, R2 and R3 have the meanings given in the description as well as processes for their preparation of the compounds of formula I.      The compounds of the invention can be used as pesticides, especially against insects and mites.
Patent CA-2025785-A1 (CA)
Title: Organic sludge dehydrater
Inventor: TAKAHASHI KAZUTOMO
IPC: C09K23/52
Filed: 1990-09-20
Abstract: ABSTRACT OF THE DISCLOSURE        An organic sludge dehydrater of a water-in-oil form amphoteric  copolymer  emulsion  containing  an  amphoteric polyelectrolite represented by the general formula:              wherein R1, R2, R3 and R4 are H or alkyl, R5 is H, alkyl or w-OH  substituted  alkyl,  HY  is  monobasic  acid,  and  Z  is amide.
Patent CA-2026557-A1 (CA)
Title: Tower system unit with angled drive bay
Inventor: RYAN DEAN
IPC: H05K7/04
Filed: 1990-09-28
Abstract: TOWER SYSTEM UNIT WITH ANGLED DRIVE BAY     ABSTRACT      A tower unit for a personal computer wherein the tower unit is a generally rectangular box having a generally rectangular interior chassis.  The interior chassis includes a first set of interiorly extending mounting flanges and tabs which are positioned and aligned on opposing chassis walls to mount one or more drives at an upwardly facing angle in order to allow the user visual and manual access to the drives for ease of operation. A similar combination of interiorly directed tabs and flanges are formed in the opposing side walls of the frame near the bottom of the tower unit chassis in order to mount a plurality of hard disk drives in horizontal positions.  The frame includes a front frame panel which combines with the front bezel to provide a gripping area which cooperates with another gripping area formed in the rear bezel to allow the tower unit to be easily moved about.
Patent CA-2033798-A1 (CA)
Inventor: GRIERSON DAVID S
IPC: A61K31/7042
Filed: 1991-01-08
Abstract: BREVET D'INVENTION NOUVEAUX DERIVES DE LA THYMIDINE LEUR PREPARATION ET LES COMPOSITIONS QUI LES CONTIENNENT RHONE-POULENC SANTE Nouveaux dérivés de thymidine de formule générale (I) dans laquelle R1 est NH2 et R2 est F ou azido, ou bien R1 est alcoylamino dont la partie alcoyle est éventuellement substituée par le reste d'un acide carboxylique, phosphonique ou arsonique, ou représente alcoyluréido, guanidino, cyanamido, acylamido, aminoacylamido ou hydroxyalcoyle, et R2 est azido, les radicaux et portions alcoyle contenant 1 à 6 atomes de carbone en chaîne droite ou ramifiée, le cas échéant leurs sels et leur préparation. Les nouveaux produits de formule générale (I) sont particulièrement utiles dans le traitement du SIDA. (I)
Patent CA-2043428-A1 (CA)
Title: Ultrafiltration device and process
Inventor: THALMANN WILLIAM H
IPC: B01D61/22
Filed: 1991-05-29
Abstract: ULTRAFILTRATION DEVICE AND PROCESS                     ABSTRACT OF THE DISCLOSURE    A portable ultrafiltration device is disclosed comprising a prefilter,  pump, membrane filter cartridges,  temperature sensors, pressure sensors, process interdiction and control means placed to detect temperature and pressure variations of a feed mixture being processed by the device, and means cooperating with said temperature and pressure means to interdict the operation of the device to prevent damage to the components.  Provision is also made for an improved feed mixture pick-up tube comprising a sliding gate means for interdicting liquid pick-up from an oil/water feed mixture and combination thereof with an ultrafiltration device.
Patent CA-2044599-A1 (CA)
Inventor: LARSSON LARS G
IPC: H04L7/02
Filed: 1990-10-26
Abstract: Des séquences de symboles présentant des séquences de synchronisation sont transmises sur un canal radio. Les signaux reçus sont échantillonés à intervalles aux points d'échantillonage de signaux dans le temps (n) et une réponse de canal (C2) est obtenue par corrélation. La réponse des impulsions est échantillonée (Ts) pendant une période (M x N) qui correspond à la dispersion dans le temps du canal. Pour des échantillons séparés ayant des points de départ séparés (n), on obtient des estimations de canal (n = 0, 2, 4, 6, N = 1, 3, 5, 7...) dont on calcule les valeurs d'énergie, et on sélectionne l'estimation (n = 8, 10, 12, 14) ayant le plus d'énergie. On sélectionne le premier point dans le temps (n = 8) de cette estimation comme point d'échantillonage dans le temps pour la séquence des symboles. Dans une variante, on sélectionne le point d'échantillonage de signaux dans le temps (n = 9) ayant la valeur d'énergie maximale (C2 max). En comparant ces valeurs d'énergie, on peut sélectionner l'un ou l'autre de ces points d'échantillonage de signaux dans le temps (n = 8, n = 9) comme point d'échantillonage dans le temps pour la séquence des symboles. Pour les séquences consécutives, on calcule une valeur moyenne relative aux points d'échantillonage dans le temps. Un maximum d'énergie pour les symboles reçus et une simplification du traitement des signaux sont ainsi obtenues.
Patent CA-2044608-A1 (CA)
Inventor: INOKUCHI KATSUHISA
IPC: F16H19/04
Filed: 1990-09-20
Abstract: A motion converting mechanism wherein two sets of one-way clutch mechanisms are added to a mechanism for converting a rectilinear reciprocating motion into a rotary motion through a rack and pinion combination.  The two sets of one-way clutch mechanisms include one that engages during the forward movement of the rack and the other that engages during the reverse movement of the rack, both of which rotate an otput shaft in the same direction when they engage.  With this arrangement, the motion converting mechanism according to the present invention can rotate the output shaft in the same direction during both forward and reverse movements of the rack, thereby improving efficiency in converting the reciprocating motion into the rotary motion as compared with the conventional one.          Thus, various rotary tools utilizing this motion converting mechanism can be provided.  One of these rotary tools is a ratchet type socket wrench, in which an arm is reciprocated, so that the output shaft can be rotated in the same direction during both the forward and reverse movements of the arm. Another one is a rotary tool, such as a screwdriver, in which a grip is grasped and released, so that the output shaft can be rotated in the same direction during both actions.
Patent CA-2046268-A1 (CA)
Title: Process and device for controlling single-phase or multiphase a.c. controllers
Inventor: RUNGGALDIER DIETHARD
IPC: H02P27/02
Filed: 1990-01-19
Abstract: In the open-loop control of A.C. power controllers through the phasa-angle control of semiconductor valves (4), the chronological sequence of the firing signals (Z) for the semiconductor valves (4) is determined by reference signals (X).  When the reference signals (X) fail for one or more periods, this chronological sequence is disturbed and damage to the load (2) to be controlled can result. Therefore, according to the invention, a method is provided whereby a safety firing signal (ZS) is always derived from the preceding firing signals (Z) when the expected reference signal (X) fails.  In addition, a device for implementing the method is specified.
Patent CA-2046908-A1 (CA)
Title: Positive resist composition
Inventor: UETANI YASUNORI
IPC: H01L21/027
Filed: 1990-12-20
Abstract: ABSTRACT OF THE DISCLOSURE      A positive resist composition comprising an alkali-soluble resin, a quinone diazide compound and a spe-cific hydroxyl group-containing compound can improve sensi-tivity without deterioration of heat resistance and film thickness retention.
Patent CA-2046993-A1 (CA)
Title: Head slider for magnetic disk drive device
Inventor: YONEOKA SEIZI
IPC: G11B5/60
Filed: 1991-07-12
Abstract: HEAD SLIDER FOR MAGNETIC DISK DRIVE DEVICE            ABSTRACT OF THE DISCLOSURE      A head slider for a magnetic disk drive device includes at least a pair of side rails having a surface mating with a magnetic disk, which surface is substantially flat or slightly curved.  The side rails define a shallow recess having a width which is gradually increased from an air inlet side to an air outlet side, and a suction force or floating force is generated within the recess.  As a result, a taperless slider having a high durability and flying stability and free from an accumulation and deposition of organic vapor is realized.
Patent CA-2047853-A1 (CA)
Inventor: NOAKES TIMOTHY J
IPC: B05B5/00
Filed: 1991-07-25
Abstract: An electrostatic spraying device in which liquid emerging from an outlet of the device nozzle (12) is subjected to an electrical field sufficiently high for the liquid to be drawn from the outlet as one or more ligaments which break up into charged droplets to form the spray. The device is adapted for the spraying of targets which are conventionally difficult to coat electrostatically, eg. targets of insulating material.      This is achieved by the use of circuitry (18, 20, 22, 24) which generates a bi-polar high voltage output having a frequency such that successive clouds of particles are charged with opposite polarity but do not discharge each other in flight. In this way, the charge applied to the particles is effective to assist seeking of the target without leading to build-up of charge on the target.
Patent CA-2048035-A1 (CA)
Inventor: CARSON MARK H
IPC: H05K/
Filed: 1991-07-29
Abstract: ABSTRACT   A method of connecting an electronic component such as an integrated circuit to a circuit board comprises the steps of depositing solder in a predetermined pattern on contact zones of the electronic component; raising the deposited solder relative to the contact zones; bringing the electronic component and the circuit board into abutment so that the solder pattern on the one and complemental contact zones on the other are aligned; and reflowing the solder to join the component and the board. The deposited solder pattern can be formed by screen printing solder cream onto the contact zones. The solder can be reflowed to create solder bumps, or may simply be deposited to the required thickness. Alternatively, the solder pattern can be formed by wave soldering the contact zones, thereby depositing solder bumps on the contact zones. The method can be used for connecting a number of electronic components simultaneously to a multiple circuit board, the multiple circuit board subsequently being cut into separate individual boards.
Patent CA-2049330-A1 (CA)
Inventor: ACCORSI ANTOINETTE
IPC: G01N33/00
Filed: 1990-04-05
Abstract: To measure the content, in a gaseous medium, of a combustible gas whose nature is known, a resistance-type element either with a catalytic surface or which is sensitive to variations in concentration of said gas in said medium is heated electrically; the value of a quantity representative of the concentration of said gas is detected, and, according to a conversion law established beforehand by calibration, a measurement for said conversion is deduced. Said element is heated in a cyclic manner, in cycles consisting of a heating phase, a second phase during which the intensity (I) is adjusted to maintain the resistive element at a set temperature and the stabilised value of the voltage (U) at the terminals of said detector is measured, and a third phase during which the heating power is reduced. On average, the electric current flowing during the second phase is appreciably lower than the heating current.
Patent CA-2050319-A1 (CA)
Title: Uv-induced factor for immunosuppression
Inventor: ULLRICH STEPHEN E
IPC: C12N13/00
Filed: 1990-03-14
Abstract: A UV-INDUCED FACTOR FOR IMMUNOSUPPRESSION                      ABSTRACT The present invention comprises the method of selectively suppressing an immune response of a mammal to a particular alloantigen.  The method includes several steps.  One step is administering to a mammal an effective amount of UVB-radiation.  Epidermal cell cultures, when subjected to UVA or UVB irradiation produce specific immunosuppressive factors.  This UV -radiation is preferably UVA radiation (320 nm to 400 nm), or UVB-radiation (280 nm to 320 nm).  It is demonstrated herein that W A radiation results in  n vitro cells producing a factor which selectively suppresses the CHS response in mammals, while UVB radiation selectively suppresses the DTH response in mammals.  Another step of the inventive method involves desensitizing a mammal to a particular alloantigen.  It has been determined that a mammal will become tolerant to a particular alloantigen once the subject mammal has been irradiated with a pre-determined wavelength of UVR and thereafter sensitized with the particular alloantigen.  This may analogously be accomplished using factors from  in vitro epidermal cell cultures.
Patent CA-2051841-A1 (CA)
Inventor: SOLTANI SOHRAB
IPC: A61G7/057
Filed: 1991-09-19
Abstract: An apparatus for performing Trendelenburg therapy and reverse Trendelenburg therapy includes an intermediate frame carried above a base frame by an inner cross-riser pivotally connected to an outer cross-riser.  One end of the outer cross-riser is pivotally connected to the base frame, and the opposite end of the outer cross-riser is rotatably and translatably connected to the intermediate frame via a cam and cam follower arrangement in which the cam follower rides on a wear plate.  One end of the inner cross-riser is pivotally connected to the intermediate frame, and the opposite end of the inner cross-riser is both rotatably and translatably connected to the base frame via a cam and cam follower arrangement in which the follower rolls against a lower wear plate.  A pivotable Trendelenburg linkage is carried on the end of the inner cross-riser connected to the intermediate frame, and a pivotable reverse Trendelenburg linkage is carried on the end of the outer cross-riser rotatably and translatably connected to the intermediate frame.  Dual acting hydraulic cylinders power the raising and lowering of the intermediate frame by effecting a scissor movement between the inner cross-riser and outer cross-riser.  Single acting hydraulic cylinders power the pivoting movement of the Trendelenburg linkage.  Similarly, single acting hydraulic cylinders power the pivoting movement of the reverse Trendelenburg linkage.
Patent CA-2053152-A1 (CA)
Title: Siliconic u.v. stabilizers containing reactive groups
Inventor: COSTANZI SILVESTRO
IPC: C08K5/544
Filed: 1991-10-10
Abstract: Polymeric stabilizers having a polysiloxanic structure contain reactive groups which can be linked to the polymeric structure to be stabilized and sterically hindered piperidinic groups. These polymeric stabilizers are particularly suitable for the stabilization of organic polymers against U.V. radiation and heat,  when  it  is  required  for  them not,  to  be extracted by solvents, fats or soaps.
Patent CA-2053378-A1 (CA)
Title: Process for preparing pyridinecarboxylic acid derivatives
Inventor: ELANGO VARADARAJ
IPC: C07C255/64
Filed: 1991-10-11
Abstract: ABSTRACT OF THE DISCLOSURE The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives. The invention also pertains to the use of N-hydroxy-2-aminoethane derivatives (including the N-hydroxy-2-aminobutane diacid derivatives) in the preparation of pyridine derivatives.
Patent CA-2054762-A1 (CA)
Title: Production of enzymes in seeds and their use
Inventor: HOEKEMA ANDREAS
IPC: A23L25/00
Filed: 1991-03-25
Abstract: A method of catalyzing in vitro reactions using seeds containing enhanced amounts of enzymes is disclosed. The method involves adding transgenic, non-wild type seeds, preferably in a ground form, to a reaction mixture and allowing the enzymes in the seeds to increase the rate of reaction. By directly adding the seeds to the reaction mixture the method provides a solution to the expensive and problematic process of extracting and purifying the enzyme.  Methods of treatment are also provided whereby a subject lacking a sufficient supply of an enzyme is administered the enzyme in the form of seeds containing enhanced amounts of the enzyme.
Patent CA-2055566-A1 (CA)
Title: Automated helicopter maintenance monitoring
Inventor: SEWERSKY RICHARD ANTHONY
IPC: B64F5/00
Filed: 1991-11-14
Abstract: Abstract Automated Helicopter Maintenance Monitoring An automated helicopter maintenance monitoring system (20), which is comprised of a flight data recorder subsystem (22) and a maintenance computer subsystem (24), collects data from a plurality of sensors in order to facilitate helicopter maintenance. The system (20) processes vibration data, rotor track data, rotor phase data, and flight sensor data to determine when a helicopter fault has occurred or will occur. Additionally, the system (20) can prompt a pilot/maintainer to fly the helicopter through specific operational states in order to aid in the maintenance process.
Patent CA-2055765-A1 (CA)
Inventor: DE BIBHAS R
IPC: G01V3/30
Filed: 1991-11-19
Abstract: ABSTRACT OF THE DISCLOSURE            A method and apparatus measures dielectric properties over a broad range of frequencies.  The functions of various resistivity and dielectric constant measuring devices such as logging tools are combined in a single tool.  A measuring tool includes novel transmitting and receiving antennas. Electromagnetic energy flows to a transmitting antenna.  A stripline adapter permits transmission to a stripline having a metallic central strip.  A strip face is bent at approximately right angles, and has a length that is compatible with the desired frequency coverage.  A ground plane extends from the stripline adapter to the right angle bend, and a void exists between the center strip and the ground plane.  A dielectric is positioned to nearly fill the void.  The antennas are positioned so that the strip face lies flush with the tool face, to permit electromagnetic energy to be transmitted into and out of the material to be analyzed.  An enclosure comprised of four metallic walls surrounds the stipline, and is in electrical contact with the ground plane and the stripline adapter.  The invention permits an analysis of the fluids in the material as well.
Patent CA-2056020-A1 (CA)
Inventor: VAN EIKEREN PAUL
IPC: C02F9/00
Filed: 1991-11-22
Abstract: ABSORBENTS FOR THE REMOVAL OF VOLATILE SUBSTANCES FROM AQUEOUS SYSTEMS              ABSTRACT         Semipermeable membrane-enclosed solid core adsorbent devices for the selective removal of volatile chemical species from an aqueous environment are disclosed.
Patent CA-2062093-A1 (CA)
Title: Transmission media covered with lead-free stabilized polyvinyl chloride composition
Inventor: MARX MORRIS F III
IPC: C08K5/57
Filed: 1992-02-28
Abstract: TRANSMISSION MEDIA COVERED WITH LEAD-FREE STABILIZED POLYVINYL CHLORIDE COMPOSITION Abstract A cable (20) which may be used for communications, for example, include transmission media (24-24), each having a plastic composition of matter disposed thereabout. In those cables in which the transmission media are metallic conductors, an insulation (26)comprising a polyvinyl chloride composition includes a lubricant and a lead-free stabilization system. The stabilization system includes an organotin constituent in combination with a calcium-zinc constituent which provides a sacrificial function to prevent the formation of tin chloride which would affect adversely the electrical properties of the insulated conductor. A jacket (28) typically is disposed about a plurality of the transmission media and comprises a non-lead stabilized plastic composition of matter.
Patent CA-2065114-A1 (CA)
Title: Method and device for reinforcing a solid tire
Inventor: KELLY DAVID
IPC: B60B21/00
Filed: 1992-04-03
Abstract: ABSTRACT OF THE DISCLOSURE     METHOD AND DEVICE FOR REINFORCING A SOLID TIRE             The invention provides a method of reinforcing a solid tire mounted upon a cylindrical hub such as, for example, a solid rubber fork lift truck tire. Tires have a solid flexible outer layer bonded to an inner cylindrical metal band. The hub is press fit within the band. In order to increase lateral stability or traction, operators often install tires of width greater than the size for which the hub is designed. The unsupported periphery of the band is subjected to impact loads and premature tire failure occurs. The invention provides a removable reinforcing ring which is press fit within the inner cylindrical surface of the metal band adjacent the hub. The outer cylindrical surface of the ring is of diameter to securely engage the band in operation but may be removed and reinstalled during normal maintenance by the same press which separates the tire and hub.
Patent CA-2066872-A1 (CA)
Title: Lampshades and lamp bases
Inventor: RUDSON JOHN M
IPC: F21V1/26
Filed: 1992-04-22
Abstract: BP File No. 6621-002 ABSTRACT OF THE DISCLOSURE                      A method of making a lampshade and a kit for use in the method.  The kit includes a base comprising a pre-formed substantially rigid polystyrene sheet in a frusto-conical shape and having an external surface coated with pressure-sensitive adhesive.  A release sheet covers the adhesive but can be peeled off and used as a pattern to cut a section of fabric to be used as a covering.   The fabric is laid progressively onto the adhesive so as to give a smooth and wrinkle-free covering on the lampshade. The polystyrene sheet is translucent for permitting light transmission.  The method may also be used to decorate a lamp base, for example, with a fabric to match the fabric used on the shade.
Patent CA-2068534-A1 (CA)
Title: Positively driven elastomeric tracked work vehicle
Inventor: NAGORCKA JAMES ARTHUR
IPC: B62D55/12
Filed: 1990-11-12
Abstract: A track assembly for a track laying vehicle comprising a vehicle body (3) and two track assemblies each track assembly comprising first and second wheels (5, 32) one being a drive wheel (5), and a continuous elastomeric track (9) with power transmission elements (11) projecting therefrom. The drive wheel comprises a hub (67) and rim supports (8) operatively connected thereto, circumferential side rim sections (65) operatively connected to the rim supports (8) with a gap therebetween, drive members (7) extending between the rim sections (65) so as to separate the gap into spaced upper zones each being adapted to receive therein one of the power transmission elements (11) the upper zones communicating with open side zones between the rim supports. The track (9) has a unique arrangement of reinforcing filaments (55) and mounting members (57) for additional filaments (58). There is also a suspension assembly with a unique arrangement of its axles (72, 73).
Patent CA-2070229-A1 (CA)
Inventor: KATURASHIMA WATARU
IPC: G02B6/44
Filed: 1992-06-02
Abstract: Provided is an optical cable using multifiber optical units.  Each of said multifiber optical units has a lamination body of a tape-type optical unit accommodated in a groove formed in a rod-like member.   The tape-type optical unit is constituted by a plurality of optical fibers arranged in one row and coated collectively.   The improvement is that the distance between the center of the rod-like member and a bottom portion of said groove is made to be equal to or larger than a half of the height of the lamination body to thereby reduce side pressure exerted on the tape type optical units 1 at the groove bottom portion thereof.
Patent CA-2070484-A1 (CA)
Inventor: MEGURO SHIGEYUKI
IPC: C23G1/12
Filed: 1992-06-04
Abstract: A cleaning agent is used to wash surfaces of aluminum products in a cleaning bath.  The cleaning agent is a water-soluble acid containing ferric ions. During the cleaning process, the ferric ions are reduced to ferrous ions. The used cleaning agent is sent to an electrolytic tank so that the ferrous ions are subject to the electrolytic oxidation to be con-verted into ferric ions. The regenerated cleaning agent is returned to the cleaning bath.