baber/WOPTO huggingface dataset:
Patent CA-2017246-C (CA)
Inventor: ASANUMA TADASHI
IPC: B29C55/00
Filed: 1990-05-22
Granted: 1994-01-11
Abstract: ABSTRACT OF THE DISCLOSURE      A stretched film of polypropylene which is excellent in transparency, substantially free of an antiblocking agent and at least uniaxially stretched and which is characterized in that it has uniformly distributed projections having a height of from 0.05 to 0.50 µ and a diameter of from 10 to 100 µ  at least on the surface thereof as well as a method for preparing the foregoing stretched film of polypropylene which comprises the steps of forming, into a sheet, polypropylene which comprises a nucleating agent in an amount selected so that the crystallization temperature of polypropylene is increased by 1 to 10°C  by the addition thereof and then stretching the sheet at a temperature ranging from 140 to 165 °C are herein disclosed.
Patent CA-2021612-C (CA)
Title: Contact printing process
Inventor: DALTON WILLIAM F
IPC: H05K3/00
Filed: 1990-07-24
Granted: 1993-11-30
Abstract: CONTACT PRINTING PROCESS            Abstract Disclosed is a method for increasing the resolution in contact printing operations by ensuring an intimate contact between the mask and photoresist. A flow of air is directed at the underside of the workpiece being printed while the mask is in place to provide pressure for the necessary contact.
Patent CA-2022436-C (CA)
Title: 7-hydroxy coumarins having substitutions in the 4 position
Inventor: BOUMA STANLEY ROBERT
IPC: C07F7/18
Filed: 1990-08-01
Granted: 2003-04-22
Abstract: Fluorescent 7-hydroxy coumarin compounds with substitutions in the 4-position and having a length greater than one carbon. More specifically, there is provided a compound of the formula:   (see formula I) wherein R, is selected from the group consisting of -CH3, -G-OZ, -G-SZ, -G-NHY, -OZ, -SZ, -NHY, and alkyl of the formula -G-CH3, where G represents an alkylene chain having from 1 to 12 carbon atoms, and Z represents hydrogen or a protecting group for O or S, and Y represents hydrogen or a protecting group for N; and wherein R2 is selected from the group consisting of -J-SH, -J-X, -OH, -SH, and -COOR', where J represents an alkylene chain having from 1 to carbon atoms, X represents a halogen and R' represents H or an alkyl chain having from 1 to 10 carbon atoms. Also provided is a process for synthesis of these compounds the process comprising the steps of: a) reacting 4-bromomethyl-7-methoxycoumarin with a monoalkylated (R1) malonic ester under conditions sufficient to achieve condensation of the ester to give the monoalkylated (2-bis(carbalkoxy)-2-R1 -1-ethyl) derivative; b) removing one of the carbalkoxy groups from the product of step a); c) demethylation of the product of step b) to give the 7-hydroxycoumarin compound; and d) chemically modifying the remaining ester to yield a desired R2.
Patent CA-2023968-C (CA)
Title: Living tissue equivalents
Inventor: KEMP PAUL D
IPC: C12M3/06
Filed: 1990-08-24
Granted: 2000-05-02
Abstract: The present invention provides unproved tissue equivalents and methods of making and using such tissue equivalents. The present invention also provides test apparatus incorporating such improved tissue equivalents.
Patent CA-2026093-C (CA)
Title: Mobile telephone system capable of adapting a portable telephone set
Inventor: TODA YOSHIFUMI
IPC: H04W88/02
Filed: 1990-09-24
Granted: 1995-06-20
Abstract: A mobile telephone system comprises: a portable telephone set; an adaptor on a vehicle for the portable telephone set to rest thereon; a remote controller unit for dialing and voice talking; and a transceiver unit for modulating/demodulating voice signal and control signals, and transmitting/receiving radio frequency signals.  The portable telephone set comprises means for electrically connecting to the adaptor when the portable telephone set is rested thereon, and a first control circuit for transferring identification numbers of the portable telephone set to the transceiver unit and then disabling a predetermined part of functions of the portable telephone set except charging a battery of the portable telephone set from the adaptor.  The transceiver unit comprises a second control circuit for storing the identification numbers transferred from the portable telephone set, and allowing the transceiver unit and the control unit to operate as a vehicle telephone system using the identification number of the portable telephone set.  The adaptor electrically connects between the portable telephone set, the remote control unit and the transceiver unit.  The second control circuit may store second identification numbers so that the transceiver unit and the control unit may operate as an independent vehicle telephone system or as a multiple telephone number system.
Patent CA-2031930-C (CA)
Title: Envelope opening apparatus
Inventor: MARZULLO JOSEPH H
IPC: B43M3/04
Filed: 1990-12-11
Granted: 2001-08-07
Abstract: Apparatus for inserting one or more documents into a waiting envelope. The apparatus includes: a supporting frame; a device mounted in the frame for holding the envelope; a movable, endless belt rotatably mounted in the frame for transporting one or more documents into the waiting envelope; and a datum guide plate secured to the frame above the movable belt. The movable belt includes an upper reach which is biased toward the datum guide plate.
Patent CA-2048792-C (CA)
Title: System state controller for electronic image processing systems
Inventor: PROKOP PATRICIA A
IPC: B41J29/42
Filed: 1991-08-08
Granted: 1997-01-14
Abstract: A state controller for an electronic reprographic system for controlling system operations when processing requests in which the system has a plurality of hardware and software system components providing discrete services for processing requests and maintaining operation of the system, and job programming means including a display screen for inputting requests, including: a state holder for monitoring the current operating state of the system components; plural discrete job processing virtual machines with each of the virtual machines having at least one service associated with it for implementing the virtual machine; each of the services having at least one of the system components for carrying out the service; and a scheduler for managing resources of and setting priorities for the virtual machines to process the requests in an efficient manner, the scheduler being adapted to cause memory from a first one of the virtual machines to be distributed to a second one of the virtual machines when the second one of the virtual machines requests more memory than is normally allocated to it.
Patent CA-2051156-C (CA)
Title: Mixtures and compositions containing phenothiazines
Inventor: EVANS SAMUEL
IPC: C10N30/10
Filed: 1991-09-11
Granted: 2002-06-25
Abstract: A mixture containing phenothiazines which is obtainable by reacting a mixture of diphenylamines comprising 1 to 5 % by weight of~~~a) diphenylamine 8 to 18 % by weight of~~~b) 4-tert-butyldiphenylamine 21 to 31 % by weight of~~~c) one or more compounds selected i) 4-tert-octyldiphenylamine ii) 4,4'-di-tert-butyldiphenylamine iii) 2,4,4'-tris-tert-butyldiphenylamine 20 to 31 % by weight of~~~d) one or more compounds selected from i) 4-tert-butyl-4'-tert-octyldiphenylamine ii) 2,2'- or 2,4'-di-tert-octyldiphenylamine iii) 2,4-di-tert-butyl-4'-tert-octyldiphenylamine, and 15 to 29 % by weight of ~~e) the compound i) 4,4'-di-tert-octyldiphenylamine, or the compounds i) 4,4'-di-tert-octyldiphenylamine and ii) 2,4-di-tert-octyl-4'-tert-butyldiphenylamine, with 1 to 200 mol % of elemental sulfur, in the presence of 0.25 to 5 mol % of a condensation catalyst selected from the group consisting of iodine, aluminium bromide, aluminium chloride, iron(III) chloride, antimony chloride, copper iodide or sulfur iodide, in the temperature range from 80 to 250°C.   The mixture containing phenothiazines finds utility as antioxidant in organic materials which are subject to degradation induced by oxidation, heat or exposure to actinic light, especially in lubricants and hydraulic fluids.
Patent CA-2052392-C (CA)
Title: Extract from ginkgo biloba leaves, in particular for intravenous injection or infusion, a method of preparation of the extract and ampoule preparations containing the extract
Inventor: SCHWABE KLAUS-PETER
IPC: B01D11/02
Filed: 1991-09-27
Granted: 2002-07-16
Abstract: The present application relates to an extract from the leaves of Ginkgo biloba containing most of the flavone glycosides, ginkgolides and bilobalide originally present in the leaves, characterized in that it is essentially free of components of the leaves with serum-precipitating and/or haemagglutinating properties, method of its preparation and pharmaceutical compositions containing the extract.
Patent CA-2053798-C (CA)
Title: Process for applying a copper layer to steel wire
Inventor: STARINSHAK THOMAS W
IPC: C25D3/38
Filed: 1991-10-23
Granted: 2000-05-30
Abstract: The subject invention relates to a process for applying a copper layer to a steel filament which comprises: (a) applying a negative charge to the steel filament and continuously passing the steel filament through a plating cell wherein the negatively charged steel filament is in contact with an aqueous copper pyrophosphate solution and wherein the aqueous copper pyrophosphate solution is in contact with a positively charged inert anode; (b) providing the negatively charged steel filament with sufficient residence time in the pyrophosphate solution to plate the steel filament with the copper layer of the desired thickness; (c) replenishing the concentration of copper in the copper pyrophosphate solution in the plating cell by circulating the copper pyrophosphate solution in the plating cell with copper ion replenished copper pyrophosphate solution from a replenishment cell, wherein the replenished copper pyrophosphate solution in the replenishment cell is in contact with at least one copper anode having a positive charge, wherein the replenished copper pyrophosphate solution is in contact with a conductive membrane of a copolymer of tetrafluoroethylene and perfluoro-3,5-dioxa-4-methyl-7-octenesulfonic acid which separates the replenished copper pyrophosphate solution from a potassium hydroxide solution, wherein the potassium hydroxide solution is in contact with a negatively charged cathode;     (d) transferring a sufficient amount of the potassium hydroxide solution which is in contact with the negatively charged cathode which produces hydroxide ions to the copper pyrophosphate solution to replenish the hydroxide ions in the copper pyrophosphate solution which are consumed at the inert anode in the copper pyrophosphate solution in the plating cell; and (e) adding a sufficient amount of water to the potassium hydroxide solution to replace the potassium hydroxide transferred to the copper pyrophosphate solution and water lost through reduction and evaporation.
Patent CA-2055469-C (CA)
Title: Annular body aircraft
Inventor: DAY TERENCE ROBERT
IPC: B64C27/20
Filed: 1990-05-11
Granted: 2001-08-21
Abstract: An aircraft having an annular body (10), defining a central passageway (12);  an upper deflector (12), a lower collector and a fluid drive (31) in the passageway. Air is accelerated by the fluid drive and circulates around the annular body (10). The collec-tor (14) divides the circulating air and directs a portion into passageway (12) and a portion to beneath the aircraft to provide a further thrust.
Patent CA-2060540-C (CA)
Title: Chain
Inventor: HUTTON RICHARD W
IPC: B65G19/24
Filed: 1992-02-03
Granted: 1996-05-21
Abstract: A  chain  for  use  primarily  in  conveyor  systems includes a plurality of male and female links pivotally coupled together.  The female link includes a generally I-shaped body segment and a pair of bifurcated arms at each end.  The arms are asymmetrically formed so that one arm defines a stop for preventing turning of the pivot pin and the other arm defines an enlarged boss.   The provision of the flanges along the body segment and the boss at the ends function to increase the bearing surface at points of greatest wear to thereby increase the useful life of the links.   The provision of the boss further obviates the need for spacers heretofore required in such chains of the prior art.
Patent CA-2060633-C (CA)
Title: Attachment apparatus for two-wheeled vehicle parts for enabling highly reliable attachment
Inventor: KAGAYAMA JOE
IPC: B62J11/00
Filed: 1992-02-04
Granted: 1999-03-30
Abstract: An attachment apparatus for two-wheeled vehicle parts in accordance with the present invention includes: a first fitting portion formed on an attachment part (1) attached to component parts of a two-wheeled vehicle and having a single rail-shaped projection (7a) that has its one end open and has a recess formed in a portion of the projection; and a second fitting portion formed on an attachment part (15) fixed to the two-wheeled vehicle parts and including a single groove (17a) that is slidably fit on the rail-shaped projection and including a projection piece (19) having a jutted portion (31a) formed on a tip end of the projection piece and movable in a direction of crossing over the groove, the jutted portion being engaged with the recess of the projection in the groove.  When a second attachment part is attached to a first attachment part by a fitting of the first and second fitting portions, the projected piece moves with the projection fit in the groove, so that the recess and the jutted portion are engaged with each other, thereby preventing a release of the fitting of the first and second fitting portions.
Patent CA-2068826-C (CA)
Title: Novel suspoemulsions based on fenoxaprop-ethyl
Inventor: FRISCH GERHARD
IPC: A01N47/30
Filed: 1992-05-15
Granted: 2003-01-07
Abstract: The invention relates to storage-stable aqueous suspo-emulsions which comprise fenoxaprop-ethyl, a sulfonylurea and/or phenylurea, an aromatic solvent and a surfactant combination of ethoxylated tristyrylphenol and ethoxyl-ated synthesis alcohol, which are phosphated if appropri-ate, to processes for their preparation and to their use in plant protection.
Patent CA-2068832-C (CA)
Title: Process for the preparation of pentafluoroethane (r 125)
Inventor: HOEVELER MARTIN
IPC: B01J37/02
Filed: 1992-05-15
Granted: 2002-10-29
Abstract: Process for the preparation of pentafluoroethane (R 125) The invention relates to a process for the preparation of pentafluoroethane (R 125) from 1,1-dichloro-2,2,2-trifluoroethane (R 123) and hydrogen fluoride in the gas phase, which comprises using a chromium- and magnesium-containing catalyst which is obtainable by precipitating chromium(III) hydroxide by reacting 1 mol of a water-soluble chromium(III) salt with at least 1.5 mol of magnesium hydroxide or magnesium oxide in the presence of water, converting the reaction mixture into a paste containing chromium hydroxide and a magnesium salt, and then drying the paste and treating the residue with hydrogen fluoride at temperatures of from 20 to 500°C.
Patent CA-2069489-C (CA)
Title: Process for the hydrothermal production of potassium silicate solutions
Inventor: NOVOTNY RUDOLF
IPC: C01B33/32
Filed: 1990-11-14
Granted: 2001-02-13
Abstract: The invention concerns a process for the hydrothermal production of potassium silicate solutions with high SiO2 mol ratios by the hydrothermal reaction of quartz sand with aqueous potassium hydroxide solutions in the range from 150 to 300 °C and the pressures of satured water vapour corresponding to these temperatures in a pressure reactor, in which the potassium silicate solutions thus-obtained, which have SiO2;K2O mol ratios of less than 2.75:1, are then converted with a quartz tempered at temperatures in the range from over 1100 °C to the melting point, whereby the temperatures and pressures are also kept within the aforementioned ranges.
Patent CA-2072898-C (CA)
Title: Flexible interface system for interfacing different complements of port circuits to a pcm telephony switching system
Inventor: CAPLAN JEROME S
IPC: H04J3/16
Filed: 1992-07-02
Granted: 1993-11-09
Abstract: FLEXIBLE INTERFACE SYSTEM FOR INTERFACING DIFFERENT      COMPLEMENTS OF PORT CIRCUITS TO A PCM TELEPHONY             SWITCHING SYSTEM     Abstract An interface system for port circuits of a distributed PCM telephony switching system enables different complements of port circuits (different numbers of line circuits or of trunk circuits or of digital circuits which handle multiple party conferences) to be connected into the PCM telephony switching system so as to meet different user requirements.  The interface system handles the PCM data signals carrying voice (analog) and digital information. The interface system also handles control signals generated in the telephony processor and transfers the data between the port circuits and the highways of the PCM switching system in sequential time slots.  The timing of the time slots, the allocation of the time slots to different data is selectable by manually, configurable, programmable, switching devices which set up codes and connections corresponding to the complement of port circuits which are to be interfaced with the PCM telephony switching system.  These switching devices are implemented by programmable headers having conductive elements which may be left intact or severed. The same interface circuitry, but with different connections intact and severed in their programmable headers, is used to establish the timing and allocate time slots in accordance with the configuration of port circuits selected by the user of the telephony system, thereby opening the architecture of the telephony system to different port circuit arrangements while isolating the telephony system from the port circuits for safety and security of operation of the telephony system.
Patent CA-2076606-C (CA)
Title: Method for detecting voice presence on a communication line
Inventor: ARNAUD CHARLES
IPC: G10L11/02
Filed: 1992-08-21
Granted: 1996-07-23
Abstract: A method and apparatus allows to accurately detect voice presence  on  a  digitized  communication  line  even  in  the presence of tone  signals.   The method includes analyzing digitized communication input signal by current blocks of 20ms (step 20), to define the stationary or non stationary state of any current block (step 21). Then an analysis on the states of the M last 20ms blocks (step 22) allows to give the final decision on voice presence or not.
Patent CA-2101330-C (CA)
Inventor: FREEDMAN PHILIP ANTONY
IPC: H01J49/10
Filed: 1992-03-11
Granted: 2002-04-23
Abstract: An isotopic-ratio mass spec-trometer comprises an r.f, or micro-wave induced plasma ion source (1, 2, 3), an electrostatic ion-energy ana-lyzer (75), a magnetic sector ion-mo-mentum analyzer (82) wherein ions are dispersed at a first potential ac-cording to their mass-to-charge ra-tios, and two or more ion collectors (77) for receiving ions of different mass-to-charge ratios, wherein an apertured electrically conductive sampling member (19) is provided adjacent to the plasma (3) and com-municates between the plasma and a first vacuum enclosure (23) evacuat-ed by first pumping means (25); an apertured skimmer member (28) sep-arates the first vacuum enclosure from a second vacuum enclosure (4) evacuated by second pumping means (5); an apertured differential pump-ing member (6) separates the second vacuum enclosure from a third vacuum enclosure (7) evacuated by third pumping means (43); an apertured analyzer entrance member (46) separates the third vacuum enclosure from a vacuum envelope (75, 76, 77) in which the electrostatic ion-energy ana-lyzer, ion-momentum analyzer, and ion detectors are disposed, the vacuum envelope being evacuated by fourth pumping means (131); and means (40) are provided for maintaining the sampling member at a second potential whereby ions generated in the plasma pass through each of the apertures and are accelerated to have a kinetic energy suitable for their mass analysis in the ion-momentum analyzer at said first potential.
Patent CA-2101705-C (CA)
Title: Method and apparatus for removing plastic from wood chips
Inventor: SPENCER RONALD V
IPC: B29B17/02
Filed: 1993-07-30
Granted: 1998-05-05
Abstract: Apparatus and process for removing unwanted foreign material from particulate material.  The apparatus and process find particular application in the pulp and paper industry to remove contaminating plastic material from wood chips.  The apparatus comprises a transporting conveyor for moving the particulate material between a inlet area and an outlet area and a vibrating motor for vibrating the conveyor to sort the particulate material and the foreign material.  Heated rollers heated to a temperature sufficient to render the foreign material tacky are applied to the sorted material and cause the foreign material to adhere thereto such that the foreign material is extracted from the particulate material which is delivered to the outlet area.
Patent CA-2105230-C (CA)
Inventor: N GUYEN GUANG LAN
IPC: A61K8/00
Filed: 1993-08-31
Granted: 2005-03-08
Abstract: The combination of a peroxidase capable of reducing organic peroxides and of an antioxidant capable of neutralising singlet oxygen makes it possible to prevent or treat cellular damage caused by the free radicals induced by atmospheric pollutants or by ultraviolet radiation. Cosmetic or dermopharmaceutical compositions are thus obtained which make it possible to combat the accelerated ageing of the skin and to reduce the risks of photoinduced skin cancer.
Patent CA-2106296-C (CA)
Inventor: BLITON ALLISON CHRISTYNE
IPC: G01N21/64
Filed: 1992-04-08
Granted: 2002-03-26
Abstract: A scanning confocal microscope (50) capable of providing ultraviolet (UV) excitation. The optical train substantially cor-rects scanning and focusing errors over the wavelength range that includes UV  and visible wavelengths. In a particular embodi-ment, the lenses (27, 30') in the common path portion of the optical train are corrected for chromatically induced scanning errors while extra lenses (60, 65) are provided in the forward UV path to correct for focusing errors due to longitudinal chromatic (visi-ble/UV) aberration.
Patent CA-2106991-C (CA)
Title: Toothbrush having a flexibly linked zone in its head
Inventor: HALM HANS
IPC: A46B15/00
Filed: 1992-03-21
Granted: 2000-10-17
Abstract: A toothbrush, having a handle (11) and a bristle bearing head (1'3), the head (13) being flexibly and resiliently linked to an extended portion (12) of the handle, the extended portion (12) either surrounding the head (13) or the head (44) partly surrounding the extended portion (42), the head (13, 44) being capable of rocking motion relative to the extended portion (12, 42),
Patent CA-2115519-C (CA)
Title: Process for preparing bean jam
Inventor: OTSUKI TATSUKIYO
IPC: A23L11/00
Filed: 1994-02-11
Granted: 1998-04-21
Abstract: A process for preparing bean jams with adzuki beans soaked in water for preparing the bean jam, comprising applying first high voltage negative electrons without flowing any electric current to the beans used as a starting material and/or the water while a pole at the secondary high voltage side of a high voltage electrostatic transformer is completely sealed and insulated and a high output resistance is provided at another pole.