baber/WOPTO huggingface dataset:
Patent CA-2013266-A1 (CA)
Title: Apparatus for reducing air pollution
Inventor: LEE MICHAEL D
IPC: B03C3/38
Filed: 1990-03-29
Abstract: ABSTRACT            Provided herein is a method and system for reducing air pollution and  smog  created  by  internal  combustion  engines  such  as automobiles;  as  for  example  removing  particulate,  gaseous contamination and positive ions. The physiological effect is to balance ionic air charges from a previous detrimental positive ion state to the more beneficial negative ionized state. Positive ions are known to be detrimental to health. Previous state of the art devices for reduction of pollution such as air injection systems, engine  modifications,   spark  timing  controls,   exhaust  gas recirculation, catalytic converters, crankcase emissions and fuel system evaporation devices do not demonstrate an ability to reduce the presence of positive ions both inside and outside of the exhaust system.   The effect of this invention is to reduce air pollution by the action of an  intensive electrical  field or radiation so as to cause electrostatic precipitation of airborne particulate and chemical transformations in the exhaust system and in the general atmospheres out of the exhaust system; so that a benefit is the altering of air ions to be substantially negatively ionized when leaving the exhaust system of internal combustion engines.  The apparatus  can  include an array of high voltage ionizing corona discharge needles, wire grids, or photoionization devices and other parts as would constitute the body of the apparatus.
Patent CA-2014121-A1 (CA)
Title: Vibratory core drill apparatus
Inventor: PORRITT JOHN
IPC: E21B7/24
Filed: 1990-04-06
Abstract: ABSTRACT           A vibratory core drill apparatus for the recovery of soil or sediment core samples.  The samples are collected within a rapidly vibrating sample tube which is driven into the ground by the apparatus.  The apparatus comprises a drill stand, vibratory drive means for imparting a vibratory motion to the sample tubes, coupling means for coupling the sample tubes to the vibratory drive means, support means for supporting and restraining the coupling means and vibratory drive means, a carriage assembly for mounting the support means to the drill stand in sliding up and down fashion, and carriage drive means for lifting or lowering the carriage assembly.  The invention permits the rapid recovery of representative soil or sediment samples at depths of up to 20 meters without the periodic disassembly of the invention during the drilling operation.
Patent CA-2016251-A1 (CA)
Inventor: DREWETT CHRISTOPHER G
IPC: D21H27/30
Filed: 1990-05-08
Abstract: Abstract There is disclosed a wrapper for a smoking article, the wrapper comprising a single paper sheet. The sheet is formed from at least two webs.  The webs are combined whilst at least one web is still in its wet stage of production prior to drying.   Different stocks can be used to make the webs so as to impart different qualities.
Patent CA-2016479-A1 (CA)
Title: Corrective device for inverter output voltage error
IPC: H02M7/48
Filed: 1990-05-10
Abstract: A corrective device for an inverter output voltage error according to this invention consists in that a current sensor is connected in series with the output of an inverter, that the polarity of a current detected by the current sensor is discriminated by polarity decision means, while a value corresponding to an input D.C. voltage is found by a D.C. voltage sensor, that a signal with the polarity of the value inverted according to the discriminated result delivered from the polarity decision means is generated by a polarity inverter circuit, and that the signal is applied as a correction signal to the PWM (pulse-width modulation) circuit of the inverter so as to correct the output voltage error.
Patent CA-2019519-A1 (CA)
Title: New and improved, ultra low carryover sample liquid analysis apparatus and method
Inventor: UFFENHEIMER KENNETH F
IPC: G01N1/00
Filed: 1990-06-21
Abstract: The sample liquids analysis system includes a probe which is automatically operable to successively aspirate sample liquids and reagent and/or other sample liquids processing liquids and to dispense the same in turn into sample liquids analysis apparatus for automatic, successive sample liquids analyses. Isolation liquid supply apparatus are operatively associated with the sample liquids aspirating and dispensing probe and operate to introduce an isolation liquid which is immiscible with the sample liquids and which selectively wets the probe to the substantial exclusion of the sample liquids, to the probe to, in combination with operatively associated rinse liquid supply apparatus which operate to fill the probe with a rinse liquid between successive sample liquids aspirations, reduce sample liquids carryover to ultra low levels. The sample liquids aspirating and dispensing probe are operated by the rinse liquid supply apparatus; and comprise a probe body member, and an active probe component operatively connected thereto by a readily disconnectable connector, thus making possible the ready and convenient replacement of the active probe component without adverse effect upon the essential configuration and/or operational characteristics of the rinse liquid supply apparatus, and thereby upon the overall performance of the sample liquids analysis system. The configuration of the probe operates to reduce sample liquids flow velocity in the active probe component, thereby further reducing sample liquids carryover.
Patent CA-2019724-A1 (CA)
Title: Stable, cosmetically acceptable topical gel formulation and method of treatment for acne
Inventor: RITTER LAWRENCE
IPC: C07C235/82
Filed: 1990-06-25
Abstract: 31,051 ABSTRACT            STABLE, COSMETICALLY ACCEPTABLE TOPICAL GEL FORMULATION           AND METHOD OF TREATMENT FOR ACNE           Stable, cosmetically acceptable gel formula-tions of the tetracycline antibiotics for the topical treatment of acne in humans.  Minocycline hydrochloride is the preferred antibiotic and the pharmaceutical vehicle is a volatile silicone and the pharmaceutical with an emollient ester cosolvent and a polyethylene gelling agent.
Patent CA-2021953-A1 (CA)
Inventor: NUTT RUTH F
IPC: A61K38/08
Filed: 1990-07-25
Abstract: 7879P/ 7/28/89: Fl 17981 TITLE OF THE INVENTION FIBRINOGEN RECEPTOR ANTAGONISTS A fibrinogen receptor antagonist of the formula: wherein A, R, R1, D, E and X-Y are preferably defined as follows A is acylamido; R is H or methyl; R1 is H or methyl; X-Y is S-S, CH2-S-S or CH2CH2; E is COOH; and D is L-arginine.
Patent CA-2022168-A1 (CA)
Title: Appareil de vaporisation-condensation pour double colonne de distillation d'air, et installation de distillation d'air comportant un tel appareil
IPC: F25J3/04
Filed: 1990-07-27
Abstract: La  double  colonne  comporte  un  appareil de vaporisation d'oxygène et de condensation d'azote qui  comprend  d'une  part  un  échangeur  de  chaleur principal  à  ruissellement  d'oxygène  partiellement immergé  lors des  arrêts  de  l'installation,  et d'autre  part  un  échangeur  de  chaleur auxiliaire qui  assure  seul  la  vaporisation  de  liquide  lors du redémarrage de l'installation.
Patent CA-2022223-A1 (CA)
Title: Bacteriostatic water and method for producing the same
Inventor: EBISAWA KENICHIRO
IPC: C02F1/72
Filed: 1990-07-31
Abstract: ABSTRACT OF THE DISCLOSURE      The invention relates to bacteriostatic water and to a method of producing bacteriostatic water, and is characterized by the steps: a) heating unprocessed water to produce primary water; b) filtering the primary water in order to remove bacteria and dust to produce  secondary water; and c) exposing the secondary water to oxygen gas to produce bacteriostatic water.  In this invention, oxygen gas is used not only as a biostatic treating agent, but also as an aerosol propellant. The container is filled with the product water, on the product water is bacteriostatically stable for an extended period.
Patent CA-2022236-A1 (CA)
Title: Coumarin derivatives, their preparation and their use in the treatment of cerebrovascular disorders
Inventor: YANAGISAWA HIROAKI
IPC: A61K31/365
Filed: 1990-07-30
Abstract: ABSTRACT OF THE DISCLOSURE     Compounds of formula (I):                                         (I) [in which: A is a group of formula (II) or (III):                                             (II)                 (III);            R1, R2 and R3 are hydrogen, lower alkyl or halogen; R4 is hydrogen, lower alkyl or aralkyl; R5 and R6 are hydrogen or lower alkyl; R7 and R8 are hydrogen or lower alkyl; or R7 and R8 together represent alkylene; and m is 1 or 2;] and pharmaceutically acceptable salts thereof are useful in the treatment of cardiovascular disorders.
Patent CA-2025844-A1 (CA)
Title: Audio adapter for personal computers and method
Inventor: TAYLOR THOMAS M
IPC: G06F3/16
Filed: 1990-09-20
Abstract: ABSTRACT OF THE DISCLOSURE       An audio electrical circuit board for use with a personal computer comprises a digital storage device for storing in digital form data representative of each of one or more distinct sounds which are to be produced, a digital to analog converter for converting the digital signals to an analog signal for transmission of an audio output device, such as a speaker, and a processing circuit electrically connected to the converter and responsive to command signals transmitted by the computer for retrieving from the storage means data respecting one or more of the distinct sounds, and for each of the distinct sounds, producing a stream of digital signals in the format required by the converter and transmitting the stream of digital signals to the converter at a rate specified by the command signals.
Patent CA-2027566-A1 (CA)
Title: Filter for continuous filtration
Inventor: STRID KENT
IPC: B01D/
Filed: 1990-03-12
Abstract: A filter for continuous filtering of a suspension under pressure and/or vacuum comprises a vessel (1) having a center axle (2) on which filter discs (3) are arranged at a distance from each other along the central axle. The filter discs consist of filter sectors having surrounding filter cloth and internal channels and between the filter sectors and an outlet from the vessel (1) there is a connection in the central axle (2). Moreover, a removal means (7) is arranged for removing the filter cake (8) on the filter cloth obtained during the filtering operation and means (12) for receiving the filter cake material scraped-off by said removal means (7). Said removal means (7) consists of a substantially vertically arranged scraper for removing at least an outer layer of the filter cake along a substantially vertical line. Furthermore, the central axle (2) is preferably formed with only one channel common for the filtrate and the gas from all filter sectors in vessel (1) and consists preferably of a tube.
Patent CA-2031456-A1 (CA)
Title: Electronic package socket
Inventor: SUZUKI MASAO
IPC: H05K7/20
Filed: 1990-12-04
Abstract: ABSTRACT ELECTRONIC PACKAGE SOCKET       A socket comprises a housing member having a recess for receiving an electronic package therein, the housing member supporting a plurality of contact members for making contact with respective leads of the electronic package.  A cover is pivotally mounted on the housing member for covering the electronic package received in the recess and for holding the electronic package therein under pressure.   An adapter is provided for receipt in the housing member, the adapter having means for receiving and aligning the leads of the electronic package in a preferred pattern.  The adapter has an opening therein arranged to communicate with the electronic package in assembly.   The  cover  is made  of  aluminum or other  good thermally conductive material and includes a recessed portion projecting inwardly through the adapter opening for making contact with the electronic package.  As such, in assembly, heat  generated  by  the  electronic  package  is  effectively released through the cover.
Patent CA-2036770-A1 (CA)
Title: Inhibitors of nitric oxide biosynthesis
Inventor: WHITTEN JEFFREY P
IPC: C07C235/16
Filed: 1991-02-20
Abstract: The present invention is directed to a new class of compound of the formula:    in which X is represented by cyano, cyclopropyl, 2-propyne, 2,3-butadiene or NHR2, in which R2 is represented by H, -CF3, -CH2CF3, or C1-6 alkyl;                  R is represented by an amino acid or OM  in which M is represented by H, C1-6 alkyl, benzyl,  phenyl, pivoyl methyl ether, Z is represented by O or NR1, in which is represented by H, -CF3, -CH2CF3  or C1-6 alkyl; and W is represented by a substituent selected from the group consisting of -CH2-NH-, -(CH2)2-NH,-NH-NH-, -CH2-NH-NH-, -CH2-O-NH- and -O-NH-;                                or a pharmaceutically acceptable salt thereof, which are useful as inhibitors of the biosynthesis of nitric oxide.
Patent CA-2039063-A1 (CA)
Title: Hypophosphite-containing cotelomers as antitartar agents
Inventor: ELLIOTT DAVID L
IPC: A61P1/02
Filed: 1991-03-26
Abstract: ABSTRACT OF THE DISCLOSURE     A method and composition for controlling tartar formation in the mouth is reported based upon low molecular weight polymers.  These polymers are formed from a mixture of mono- and di- carboxylic vinyl monomers reacted with hypophosphite groups.  Particularly effective are phosphorus containing acrylate/maleate polymers of weight averaged molecular weight ranging from about 400 to 5000.
Patent CA-2039115-A1 (CA)
Inventor: HIRAYAMA TOMOSHI
IPC: G06K9/68
Filed: 1991-03-26
Abstract: An information processing apparatus with a hand-writing character recognition function includes an input device having a pen and tablet for inputting a user's hand-writing character information, and a selecting device for selecting a desired block type character on the basis of the hand-writing character information, selection of the block type character (corresponding to the hand-writing character information) being effected by the hand-writing character recognition function. A detecting device detects a similarity condition between first and second hand-written characters initially input by the user on the input device, and hand-writing character information for the user based on the first and second hand-written character is registered if the similarity condition was detected. Subsequently, if the user inputs a hand-written character similar to the user's registered hand-writing character information, the input hand-written character is translated into the desired block type character.
Patent CA-2041493-A1 (CA)
Inventor: ROSENBLOOD KENNETH L
IPC: A44B11/00
Filed: 1991-04-30
Abstract: ABSTRACT            A locking device having two sets of pairs of aligned clamping teeth, each set holding one lace end of an elastic lace.  Each pair of aligned clamping teeth has a lace insertion portion for snapping an elastic lace laterally through it into a lace holding portion. Last pairs of aligned clamping teeth are dimensioned to hold the elastic lace tighter than the remaining pairs. A pair of cleats may be used to clasp a shoe lace as it comes out of a shoe eyelet so that any further tensioning of the lace will not affect the tightness of the shoe.  A shoe hook may also be placed on the back of the locking device.
Patent CA-2042086-A1 (CA)
Title: Device for detecting data relating to the passage of vehicles on a road
Inventor: GREGOIRE PIERRE
IPC: G01G3/13
Filed: 1991-05-08
Abstract: PHF 90-531                                             12.04.1991 ABSTRACT: Device for detecting data relating to the passage of vehicles on a road. The invention relates to a device for detecting data relating to the passage of vehicles on a road (20), said device comprising a piezoelectric effect cable (2) and means of rigidifying said cable rigid and transmitting loads produced by the passing vehicles to said cable. The means comprise a cylindrical metal tube (6) having an inside diameter which is larger than the outside diameter of the piezoelectric cable (2) which is arranged along the axis of the tube, the space between the cable and the inner walls of the tube being filled with a compacted metal oxide powder (5). Said device may be installed in a groove (10) which is formed in the road (20), said device having a depth which is substantially equal to the outside diameter of the tube (6), and a transverse dimension which is slightly larger than said diameter. The device is fixed in the groove (10) by mechanical means, in such a manner that the upper surface of the device is flush with the upper surface (1) of the road, for example wedge members (7a, 7b) which are fixed to the road by screws (8) being used to fix the device.     Application: Detection of passing vehicles, counting their numbers, measuring their speed and weight, and classification of moving vehicles.     Reference: Figure 2.
Patent CA-2042405-A1 (CA)
Title: Filter cartridge manifold
Inventor: SELBIE MICHAEL R L
IPC: B01D63/04
Filed: 1990-09-28
Abstract: A manifold structure for connecting rows of cartridges (100) to adjacent like rows of cartridges (100). The manifold structure includes a first fluid passage (153, 183) adapted to pass either feed or filtrate through the body of the manifold structure, a second fluid passageway (169, 197) adapted to be coupled to a first passageway of a filter cartridge to provide fluid communication between the cartridge and the first passageway, a third fluid passageway (167, 199) adapted to be coupled to a second passageway of the filter cartridge to provide fluid communication between the cartridge and the first passageway; only one of the second fluid passageway or the third fluid passageway being enabled for fluid communication at any one time. This manifold structure allows construction of a filter installation comprising a plurality of rows of interconnected filter cartridges (100) whereby feed and filtrate flow can by made to run in parallel through connected rows of filter cartridges (100) using readily interchangeable manifold components. The manifolds also allow installation of blocking or wafer valves (241) for the purpose of either series connecting groups of parallel connected filter cartridges or for flow regulation.
Patent CA-2043804-A1 (CA)
Inventor: HUNG CHIN S
IPC: E06B9/74
Filed: 1991-06-04
Abstract: An auxiliary driving device being attached to a primary driving device of a rolling door and including a gear engaged with a gear wheel of the primary driving device, a motor having an axle, a lower disc with a pinion slidably engaged on the axle, a spring biasing the pinion and the lower disc upward, an upper disc disposed above the lower disc, three balls engaged in the recesses formed in the discs, the pinion moves downwardly to engage with the gear when the first motor is energized so that the spindle can be driven to rotate by the motor.
Patent CA-2044068-A1 (CA)
Title: Telephone system with message recording function
IPC: H04M1/57
Filed: 1991-06-07
Abstract: A telephone system having a message recording function which records in a voice mail recorder a voice message received from a calling party during absence of a called party and vocally reproduces the recorded message in response to a request from called party.  The tele-phone system, which is preferably connected with such a network that a calling party identification data is included in an incoming signal, comprises a voice conver-sion means for converting a telephone number of the calling party into a voice signal on the basis of the calling party identification data and a control means for vocally reproducing the calling party's telephone number converted into the voice signal together with the voice message from the calling party recorded in the voice mail recorder, whereby, even when the calling party himself does not leave his telephone number in the message, the called party can listen to and know the telephone number as part of the voice message from the calling party.
Patent CA-2045760-A1 (CA)
Title: Arbitrarily selected prime numbers to provide pitch sequences with minimized travel noise
Inventor: WITT HOWARD W
IPC: B60C11/03
Filed: 1991-06-26
Abstract: ARBITRARILY SELECTED PRIME NUMBERS TO PROVIDE          PITCH SEQUENCES WITH MINIMIZED TRAVEL NOISE     ABSTRACT OF THE DISCLOSURE   For any given pitch sequence in the design of a tire's tread, relative pitches can be selected from a relatively small number of prime numbers arbitrarily chosen within a particular range of numbers so as to permit reasonable manipulation of the numbers in an  available computer. The computer then furnishes a specific combination of pitches which combination is found to minimize travel noise for that tread design by simulating an actual test of a tire having that specific tread. A large number of combinations of variable relative pitches for a given pitch sequence in which one or more pitches might be repeated, may be evaluated by assessing string plots for each combination; thus, string plots in which the highest peaks (amplitudes) are above a preselected level are discarded as being objectionable and the large number of combinations is reduced to relatively few which may be evaluated visually or by using a computer program to choose only those string plots which have the lowest peaks and the widest distribution of the level of sound energy generated by the many pitches in the circumference of the tire's tread.
Patent CA-2045828-A1 (CA)
Inventor: JOHNSON BRUCE R
IPC: B21J15/14
Filed: 1991-06-27
Abstract: ABSTRACT OF THE DISCLOSURE     The  brake  shoe  rivet  press  is for  removing  in  a  single operation rivets which are arranged in rows to hold a fibrous liner to the base of a brake shoe to thereby permit removal and later replacement of the liner.  The press has a frame and a punch holder fixedly carried by the frame.  The punch holder has a plurality of movable punches also arranged in rows and corresponding in number to the number of rivets in the brake shoe.  The press includes upper and lower rams movably carried by the frame on opposite sides of the punch holder.  The lower ram is provided with a support surface for positioning and supporting the brake shoe and also includes a plurality of openings arranged in rows  for receiving  the spent rivets.  The upper ram has an operating surface, which, when the upper ram is actuated, engages the punches so as to urge them against the rivets to remove them from the brake shoe in a single operation.  A hydraulic circuit is provided for controlling the movements of the upper and lower rams.
Patent CA-2045973-A1 (CA)
Title: Selective permeability reduction in a subterranean hydrocarbon-bearing formation using a nonselective gel
Inventor: TACKETT JAMES E JR
IPC: C09K8/512
Filed: 1991-06-28
Abstract: ABSTRACT OF THE DISCLOSURE     Selective permeability reduction is achieved in a heterogeneous treatment zone of a subterranean hydrocarbon-bearing formation by initially placing a nonselective permeability-reducing material in the high and low permeability regions of the treatment zone. Thereafter, a permeability-restoring agent is placed in the regions behind the permeability-reducing material. The agent contacts all of the material in the low permeability region,reacting with it to restore permeability thereto. However, the agent is consumed by reaction before it contacts all of the material in the high permeability region, thereby leaving a sufficient amount of material in the high permeability region to achieve selective permeability reduction therein.