baber/WOPTO huggingface dataset:
Patent CA-2003432-A1 (CA)
Inventor: BENDER JAMES G
IPC: G05D16/20
Filed: 1989-11-21
Abstract: SUBMODULATION OF A PULSE-WIDTH-MODULATED SOLENOID CONTROL VALVE            Abstract of the Invention A PWM solenoid operated valve control arrangement which substantially eliminates supply voltage dependent variability of the valve without the expense or inefficiency of a conventional voltage regulator.  The coil of the solenoid valve is pulse-width-modulated in relation to the commanded output result and the energization periods are submodulated in relation to the magnitude of the supply voltage.  The effective voltage applied to the coil, and hence the operating characteristics of the solenoid valve, are thereby made substantially independent of supply voltage variations.
Patent CA-2004518-A1 (CA)
IPC: A63B37/08
Filed: 1989-12-04
Abstract: CHLORINATED LIQUID CENTERS            Abstract of the Disclosure The center of a wound golf ball is first chlorinated to improve the adhesion between the patch and the envelope.  This chlorinated center is then abraded after patching to allow the elastic thread to grip the exterior of the center during winding.
Patent CA-2005788-A1 (CA)
Inventor: DIETRICH NORMAN R
IPC: H01L33/48
Filed: 1989-12-18
Abstract: SILICON-BASED MOUNTING STRUCTURE FOR SEMICONDUCTOR OPTICAL DEVICES            Abstract A silicon-based laser mounting structure is disclosed which provides improved interconnection between a semiconductor optical device, such as a laser. and an external high frequency modulation current source, by reducing the presence of parasitic inductive elements in the interconnecting network. The structure includes a stripline transmission path formed by depositing metal conductive strips on the top and bottom surfaces of a silicon substrate. The conductive strips arecoupled at one end to the external modulation current source. A thin film resistor is deposited between the second end of the top conductive strip and the semiconductor optical device. This thin film resistor is utilized to provide impedance matching between the optical device and the stripline. That is, for a laser with an impedance ZL, and a stripline designed to have an impedance ZS, the resistance R is chosensuch that R+ZL=ZS. Utilizing silicon processing techniques, the thin film resistor may be placed adjacent to the laser, reducing the parasitics associated with their interconnection. A conductive via is formed through the substrate to provide a top-side bonding location for connecting the optical device to the bottom metal conductor, by providing the top-side site, the parasitic inductance associated with this interconnection is considerably reduced.
Patent CA-2008366-A1 (CA)
Title: Process for preparing 1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalen
Inventor: FRANK WALTER C
IPC: C07C2/68
Filed: 1990-01-23
Abstract: PROCESS FOR PREPARING 1, 1, 3, 4, 4, 6-HEXAMETHYL-1, 2, 3, 4-TETRAHYDRONAPHTHALENE                            ABSTRACT A process is disclosed for the production of 1,1,3,4,4,6-Hexamethyl-1,2,3,4-Tetrahydronaphthaleene comprising reacting para-cymene with an olefinic compound selected from the group consisting of 2,3-dimethyl-1-butene and neohexene, in the presence of a reagent of the formula                 , and further in the presence of an aluminum halide and I2, wherein in the above formula, R1, R2, R3, R4, R5 and R6, independently, are H or a C1-C3 straight chain, or branched alkyl, provided that no more than one of R1, R2 and R3 are H, and no more than one of R4, R5 and R6 are H.        The subject process produces the desired compound in a surprisingly high yield, with a surprisingly high selectivity, and at a relatively high rate of reaction, using better, more convenient and/or less expensive process methodology than many processes known heretofore.  Using the subject process, one is able to efficiently and effectively produce HMT, a compound of extreme importance to the fragrance industry.
Patent CA-2009545-A1 (CA)
Inventor: VECCHIO GIUSEPPE
IPC: B23B51/10
Filed: 1990-02-07
Abstract: ABSTRACT         A method of forming a countersunk taper about one side of an opening in a work piece while forming a drawn raised portion upon the other side of the work piece, the method comprising: 1)   preforming at least one opening in the work piece of    predetermined shape and dimension 2)   providing a forming tool  for the formation of a countersink taper and raised portion on the side of the work piece away from the countersink,  the forming tool being secured in a tool, the tool designed in use to draw down the material around the at least one opening of the work piece at the side of the work piece remote the  forming tool forming a raised portion thereat, and to taper the perimeter of the at least one opening proximate the forming tool to allow the head of a fastener to be countersunk flush with the work piece when the  fastener  is  installed  in  the opening.
Patent CA-2010533-A1 (CA)
Title: Insulating support for tubing string
Inventor: HARTMANN MICHAEL P
IPC: E21B33/04
Filed: 1990-02-21
Abstract: Abstract of the Disclosure An improved wellhead structure having a housing with an internal landing seat to receive the landing shoulder on a hanger having a bore with a counterbore below the bore and a shoulder between,  a hanger mandrel  positioned within the counterbore and having an external flange having a diameter less than the diameter of the counterbore, a first bushing positioned above the mandrel flange and in engagement with said shoulder within the hanger counterbore, a second bushing positioned within the counterbore below said mandrel flange, and a support sleeve positioned within said hanger in support-ing relationship to said second bushing, said bushings being of an electrical insulating material and sized to retain said mandrel in spaced relationship with respect to said hanger to prevent electrical connection therebetween.  This structure also is used for supporting and sealing a tubing string or a section of a tubing string in a well while electrically insulating the section from the remainder of the string.
Patent CA-2012218-A1 (CA)
Title: L-cladinose retinoic esthers, process for their preparation and use in human or veterinary medicine and in cosmetology
Inventor: PHILIPPE MICHEL
IPC: C07H15/04
Filed: 1990-03-15
Abstract: Retinoic esters of L-cladinose have the formula   <IMAGE> (I) wherein the  <IMAGE>  radical is (all trans) retinoyl, (13 cis) retinoyl or etretinoyl, and R2 represents linear or branched alkyl having 1-24 carbon atoms; and the  alpha  and  beta  anomers and their mixtures. These esters are usefully employed in human and veterinary medicines and in cosmetic compositions.
Patent CA-2013234-A1 (CA)
Title: Clutch adjuster
Inventor: FLOTOW RICHARD A
IPC: F16D13/75
Filed: 1990-03-28
Abstract: Title CLUTCH ADJUSTER Abstract of the Invention A clutch adjuster adapted to compensate for clutch disc wear incorporates a spring lock which in a first position secures the adjuster against rotation.   On application of a disengagement force, the lock is deflected to a second position, wherein the adjuster is free for rotation.  In one preferred form, the lock has an aperture which engages a bolt head on the adjuster, and upon application of the force the lock is axially displaced from the bolt head.   In a second preferred form, a disc spring is adapted to normally retain the bolt head axially away from a clutch cover in a first, secured, position.  Upon application of force,  the bolt head is depressed against the disc spring to shift the adjuster to a second position wherein the bolt head is free for rotation.
Patent CA-2015193-A1 (CA)
Inventor: HAWE MALCOLM
IPC: C11D3/48
Filed: 1990-04-23
Abstract: This invention relates to aqueous acidic solutions which are thickened by cationic polymer, the polymer being added to the solution in the form of particles below 10µm in size. The useful cationic polymers are formed from a water soluble cationic ethylenically unsaturated monomer or blend of monomers that includes a polyethylenically unsaturated cross-linking agent. A peak viscosity is achieved in the aqueous acidic solution at a particular cross-linker concentration.      The concentration of cross-linking agent chosen is carefully controlled so that the viscosifying effect can be optimised whilst minimising the amount of polymer that has to be added. The amount of polymer in the aqueous acidic solution is typically in the range of from, 0.01% to 5% dry weight polymer.
Patent CA-2017304-A1 (CA)
Title: Portable water purification devices using low density activated carbon
Inventor: POULI DIRK
IPC: C02F1/50
Filed: 1990-05-22
Abstract: ABSTRACT    In order to provide high fill and pour rates, while still providing effective treatment of water to remove pollutants from it (such as organic contaminants, protozoa, etc.), a water pollutant removal material is disposed in a low volume configuration within a container, having a void volume of about 40-90% (e.g. 60-90%).  The water pollutant removal material may be activated carbon loaded on a non-woven cloth, loose fiber or chip, paper, foam, felt or like fibrous low density material.  The activated carbon impregnated materials may be placed in the container, (e.g. by rolling up an impregnated sheet) and may be disposed within a retention filter which is spaced from the interior walls of the container.  Biocide material (e.g. an iodine compound) may be used in addition to or in place of activated carbon, in a low volume configuration.
Patent CA-2018797-A1 (CA)
Inventor: TOKITA NOBORU
IPC: B60C9/04
Filed: 1990-06-12
Abstract: An apparatus for building a tire comprises a supply of elastomeric sheet material of a predetermined length and having spaced apart first and second end portions. A plurality of parallel extending reinforcing members are contained in the elastomeric sheet material of which adjacent reinforcing members are spaced apart a substantially equal first distance. An embosser for elastically deforming the first and second end portions of the elastomeric sheet material increases the distance between the adjacent reinforcing members in each of the first and second end portions to a second distance greater than the first distance. A drum is provided to receive the elastomeric sheet material with the first and second end portions overlapped. A mold is provided to bond together the first and second end portions of the elastomeric material in the overlapped portion under heated pressure to form a joint. At least one reinforcing member in the first end portion is located between a pair of radially extending planes containing a respective one of a pair of adjacent reinforcing members in the second end portion:
Patent CA-2019960-A1 (CA)
Inventor: FRICKE GUNTER
IPC: B03C7/12
Filed: 1990-06-27
Abstract: A mineral mixture is divided up into various grain size fractions and each fraction is individually separated by electrostatic means in free fall separators.
Patent CA-2019979-A1 (CA)
Title: Antimicrobial polymeric bisbiguanides
Inventor: MERIANOS JOHN J
IPC: A61K31/785
Filed: 1990-06-27
Abstract: ANTIMICROBIAL POLYMERIC BISBIGUANIDES                      Abstract Antimicrobial polymeric bisbiguanides capped with alkylene pyrrolidonyl groups having the formula:       where    X is C2-C4 alkylene;           Y is a bivalent bridging group; and n is at least 2;   and acid addition salts thereof.
Patent CA-2023655-A1 (CA)
Title: Forging punch
Inventor: ASAI TOMOHITO
IPC: B21J13/02
Filed: 1990-08-20
Abstract: ABSTRACT OF THE DISCLOSURE            A forging punch of  the  present  invention includes: an outer punch of a cylindrical shape; and an inner  punch disposed in the outer punch and  protruding from an end surface of the outer punch;  at least one of the punches having at least one groove for relieving oil formed  either  on  an inner peripheral surface  of  the outer  punch  or on an outer peripheral surface  of  the inner punch. Therefore, an oil remaining between the end surface  of the outer punch and the bottom surface of  a workpiece  is  relieved to the outside  of  the  forging punch  by  way of the groove,  thereby enabling  precise forging.    Further,  the  forging  punch  has  obviated additional processing,  because no traces of the  groove are marked on the workpiece after processing.
Patent CA-2025510-A1 (CA)
Title: Packaging system for landscaping bed dividers
Inventor: EMALFARB SEYMOUR
IPC: A01G9/28
Filed: 1990-09-17
Abstract: PACKAGING SYSTEM FOR LANDSCAPING BED DIVIDERS     ABSTRACT           A system and method for packaging a plurality of sections of bad dividers which form a boundary between adja-cent landscaping areas.  Each section includes an elongated divider structure having an enlarged upper portion and a flange portion extending lengthwise along the upper portion and depending downwardly therefrom  for  insertion  in the ground.   A  plurality  of the  bed  divider  sections  are arranged  in  an  elongated  stack  of juxtaposed  sections. Another of the bed divider sections is arranged lengthwise along at least one side of the stack in such a manner that its flange portion is generally perpendicular to the flange portions of the plurality of bed divider sections in the stack.  All of the bed divider sections are held in this arrangement whereby the stack of bed divider sections rigid-ify the package in one transverse direction, and the side bed divider section rigidifies the package in the opposite transverse direction.
Patent CA-2025872-A1 (CA)
Inventor: OWENS ROBERT C
IPC: A61B17/00
Filed: 1990-09-20
Abstract: A valvuloplasty catheter (10) is described which includes  an  elongated  flexible  plastic  tube  (12) dimensioned so as to allow it to be passed through the vascular system.   Affixed to the distal end portion (14) of the tube (12) is an inflatable expander member (32) which is intended to be positioned in the annulus of the valve to be treated.  Inflation ports (28, 30) expose the interior of the expander member (32) to the lumen (18) of the tube (12) so that when an inflation fluid is injected, under pressure, at the distal end of the tube, the expander member (32) expands radially outward to spread the valve and free-up its leaflets. The novelty resides  in providing first and second inflation ports (28, 30) of differing size so that the expander member (32) inflates so as to create a dog-bone effect, tending to stabilize the expander member (32) relative to the valve being treated.
Patent CA-2026539-A1 (CA)
Inventor: JAKOB STEPHEN W
IPC: A24D1/00
Filed: 1990-09-28
Abstract: A combustible smokable filler material includes an agglomerated matrix of an inorganic component (e.g., particles of calcium carbonate) and an organic component (e.g., an alginate).  The smokable filler material also includes a binding agent, and an aerosol forming material.  Tobacco extracts and/or pieces of tobacco laminae can be incorporated into the smokable filler material, and/or the smokable filler material can be blended with tobacco cut filler.  Cigarettes are provided by wrapping the smokable filler material in a paper wrapping material.  A typical paper wrapping material has a porosity of less than about 5 CORESTA units.
Patent CA-2027571-A1 (CA)
Title: Information compression method and device for compatible decoding of a group of television signals with increasing resolutions
Inventor: TOURTIER PHILIPPE
IPC: H04N19/00
Filed: 1990-02-13
Abstract: ABSTRACT OF THE DISCLOSURE      Method and device for information compression intended for compatible decoding of a group of television signals with increasing resolutions The method comprises: at the transmitting coder - strobing the space frequency band of the signal to be  transmitted  which  has  the  highest  resolution  into adjacent subbands (SB1, SB2; SB3a, SB4, SB5a, SB5b; SB1 ...          SB6) - coding (2, 3, 4, 5, 6, 7, 8) independently in each subband,  the  signal  with  the  highest  resolution  to  be transmitted;    - multiplexing  (1)  the  sub-bands by separating the coded  signals  in each  subband by means of  non-imitable synchronizing patterns; and at each receiving decoder - decoding  (38 ...  44) the signals received relative to each subband only taking into consideration those which are necessary in order to reconstitute at least one member of a resolution group.    Application : Transmission system for high-definition TV images.
Patent CA-2029090-A1 (CA)
Title: Electroless copper plating process and apparatus
Inventor: KUKANSKIS PETER E
IPC: H05K3/00
Filed: 1990-10-31
Abstract: An electroless metal plating process, particularly for use in plating through-holes in printed circuit substrates, and more particularly for additively depositing copper metal on through-hole surfaces, in which the substrate is at least intermittently subjected to vibrating motion in contact with the electroless depositing bath, and an electroless metal depositing apparatus for carrying out the process.
Patent CA-2030135-A1 (CA)
Title: Device suitable for mixing medication
Inventor: OGLE GEORGE B II
IPC: A61J1/00
Filed: 1990-11-16
Abstract: DEVICE SUITABLE FOR MIXING MEDICATION            Abstract The present invention comprises a device suitable for mixing medicaments which  comprises  two  separate containers.   The first container is provided with a reservoir section and a neck section such that the cross section of the neck section is less than the cross section of the reservoir.  A stopper is snugly fit within the neck section adjacent to the reservoir and a spike and plunger member is snugly fit within the neck section adjacent the stopper on the side opposite the reservoir.  The spike and plunger member has a midportion with a hole therein, and a plunger projecting from the midportion adapted to make contact with the stopper.   A spike extends from the midportion in the opposite direction.
Patent CA-2031596-A1 (CA)
Inventor: NUGENT ROBERT R
IPC: H01M2/30
Filed: 1990-12-05
Abstract: IMPROVEMENT IN OR RELATING TO BATTERIES   ABSTRACT OF THE DISCLOSURE    A method for the manufacture of structurally homogeneous flash-free lead battery terminals comprised of first removing all voids from the lead infeed stock by means of an extrusion forming process and then automatically delivering the void-free extrusion formed lead infeed stock to a computer-controlled automatic metal lathe for automated machining and delivery therefrom of a flash-free battery terminal output product.
Patent CA-2032487-A1 (CA)
Title: Noortopic agent
Inventor: SHIRASAKI YASUFUMI
IPC: A61K31/54
Filed: 1990-06-14
Abstract: Abstract The present invention relates to a noortopic agent which comprises a derivative of 2-pheny1-3-oxo-2H-1,4-benzothiazine. This noortopic agent is effective for treating diseases accompanied by a lowering of cerebral functions, for instance, cerebral infarction disorders due to ischemia such as transitory cerebral ischemia, brain edema, cerebral disorders due to the after-effect such as cerebral hemorrhage, cerebral disorders due to traumatic injury such as bruise, central nervous degeneration and degerative diseases such as dementia, mental disorders, neurosis and Alzheimer's diseases.
Patent CA-2036488-A1 (CA)
Title: A process for the production of fillers modified with organosilicon compounds, the fillers thus modified and their use
Inventor: WOLFF SIEGFRIED
IPC: C09C1/30
Filed: 1991-02-15
Abstract: A process for the production of fillers modified with organosilicon compounds, the fillers thus modified and their use.      The invention relates to a two-step process for the surface modification of natural or synthetic oxidic or silicate fillers using organosilicon compounds correspond-ing to the following formulae (see formulae I or II) in which the filler and the compound are intensively mixed in the absence of further solvent and the homogenized mixture is subjected to the hydrophobicizing reaction in the preheated mixer.
Patent CA-2036769-A1 (CA)
Inventor: ASH GERALD R
IPC: H04Q3/00
Filed: 1991-02-20
Abstract: REAL-TIME NETWORK ROUTING Abstract An arrangement for routing calls from a source switch to a destination switch in a telecommunications network. If a direct trunk is available between the two switches, that trunk is used. Otherwise, the destination switch is queried to obtain availability data of trunks to that switch from intermediate switches of the network. This availability data is then compared with availability data of trunks from the source switch to the intermediate switches. A route is then selected using an intermediate switch having available trunks from the source switch and to thedestination switch. If a route using lightly loaded trunk groups is available, that route is selected in preference to the use of a route using more heavily loaded trunk groups. Advantageously, routing is performed to dynamically optimize selection of a route based on the current state of the network. In order to ensure that different types of services carried over a trunk group receive equitable treatment, a load objective is specified for each type of service. If the actual load for a particular type of service equals or exceeds the load objective, then an available trunk of the trunk group will only be seized if thenumber of available trunks exceeds a reserve limit, the reserve limit being the sum of the differences between actual load and objective load for services whose actual load is less than the objective load as limited by a reserve limit for each kind of service. To give further protection to selected key services, an available trunk of a group can only be seized for use with a basic service if the number of available trunks exceeds the number being reserved for key services.
Patent CA-2038066-A1 (CA)
Title: (benzhydryloxyethylpiperidyl) aliphatic acid derivatives and their use in the treatment of allergies and asthma
Inventor: FUKUMI HIROSHI
IPC: A61K31/452
Filed: 1991-03-12
Abstract: ABSTRACT OF THE DISCLOSURE    Compounds of formula (I):                               (I) in which: R1 and R2 are independently alkyl, alkoxy, trifluoromethyl, nitro or halogen; A is an aliphatic hydrocarbon group having from 2 to 8 carbon atoms whose chain contains at least 2 carbon atoms in a linear chain between the piperidine group and -COOH,  said group optionally  being  unsaturated;  and  m  and  n  are independently 0,  1,  2 or  3;  and pharmaceutically acceptable salts and esters thereof have been found to have valuable anti-histamine properties without the usual  side effects of anti-histamines.   Methods of preparing the compounds are also provided.
Patent CA-2039568-A1 (CA)
Title: Mechanical tool for manipulating fittings and caps
Inventor: CECCUCCI RUDOLPH R JR
IPC: B25B27/00
Filed: 1991-04-02
Abstract: Abstract of the Disclosure A mechanical tool for facilitating coupling and decoupling of hose fittings and caps to a plumbing outlet, such as a septic drain outlet on a recreational vehicle is disclosed.  The tool includes a handle and two opposed branches extending from one end thereof.  The free end of each branch has a slot therein sized to engagably receive one of the two diametrically opposed outwardly projecting lugs existing on a conventional drain hose fitting or drain cap.  The branches are roughly spaced such that when in use the slotted free ends of the branches are capable of being adjusted to engagably receive the lugs.  An adjustable biasing member susposed between the branches and a position so its not to interfere with the operation of the tool when used to manipulate the fitting or cap.  The biasing member allows the tool to be appropriately tensioned such that the branches securely engage the fitting or cap when in use.
Patent CA-2041156-A1 (CA)
Inventor: SZITA JENO G
IPC: C09D167/00
Filed: 1991-04-24
Abstract: Sulfonimide cure catalysts are used with aminoplast crosslinking agents and resins capable of reacting with aminoplast crosslinking agents to prepare heat curable compositions capable of crosslinking to form coatings and articles. Liquid or solid curable compositions may be prepared. Solid sulfonimide catalysts used in combination with solid glycoluril type crosslinking agents are well suited for powder coating systems containing hydroxy- and carboxy-functional resins.