baber/WOPTO huggingface dataset:
Patent CA-2015256-C (CA)
Title: Process for making acid activated bleaching earth using high susceptibility source clay and novel bleaching earth product
Inventor: TAYLOR DENNIS R
IPC: B01J20/12
Filed: 1990-04-24
Granted: 1996-12-03
Abstract: A process for making acid-activated bleaching earth from certain naturally occurring mixtures of calcium bentonite and attapulgite clay. The process involves treating such clay with low levels of activating acid which are mixed with the dried and ground clay, or spray dried from slurries containing he clay-acid mixture. Advantages include: lower acid costs/unit mass of clay treated, lower production costs (no washing, filtering, or waste treatment steps) and environmental soundness (no harmful environmental waste products are produced).
Patent CA-2015991-C (CA)
Title: Catalyst for purification of exhaust gas from diesel engine
Inventor: HORIUCHI MAKOTO
IPC: F02B3/06
Filed: 1990-05-03
Granted: 1996-11-19
Abstract: A catalyst for purification of exhaust gas from Diesel engine wherein catalyst component containing (a) refractory inorganic oxide, (b) oxide of at least one element selected from the group consisting of praseodym-ium, neodymium and samarium, and (c) at lest one noble metal selected from the group consisting of platinum, palladium and rhodium provided that palladium is never selected alone is borne on refractory three-dimensional structure.
Patent CA-2018782-C (CA)
Title: Soft bag and expander
Inventor: DIAMOND SIDNEY
IPC: A45C15/00
Filed: 1990-06-12
Granted: 2000-07-18
Abstract: An expander for insertion into and expansion of a soft bag (20, 40, 302) comprising a device (10, 11, 13, 15, 136, 137, 200, 250, 300, 350) which is folded or collapsed to a flat state or spread apart to an expanded state. The soft bag is collapsed to a compact form in the flat state for shipment. In the expanded position, the bag is expanded to give the appearance that it is filled. Some embodiments use a resilient member (18, 38, 146, 230, 280, 281, 330, 380) to automatically urge the device from a flat position to its expanded position when compressive forces are removed from the bag. Other forms use a cord (72, 98, 150) for manually moving the expander device into its bag-expanding position. To provide far a greater extent of expansion in relation to the length of the device in the flat position, an expanding device (200, 250, 300, 350) having four sequentially arranged sections (211-214, 261-264, 311-314, 361-364), each of which is articulatable with respect to each adjacent section is provided in some embodiments.      Expansion of a cylindrical bag (302) is facilitated by a generally rigid insert (333, 334, 382) in certain embodiments that is articulatable to better conform to the curved shape of the side portions.
Patent CA-2018976-C (CA)
Title: Doping procedures for semiconductor devices
Inventor: KOPF ROSE F
IPC: H01L33/00
Filed: 1990-06-14
Granted: 1994-06-28
Abstract: DOPING PROCEDURES FOR SEMICONDUCTOR DEVICES Abstract A process is described for making semiconductor devices with highly controlled doping profiles. The process involves minimizing or eliminating segregation effects caused by surface electric fields created by Fermi-level pinning. These electric fields act on dopant ions and cause migration from the original deposition site of the dopant ions. Dopant ions are effectively shielded from the surface electric fields by illumination of the growth surfaces and by backgrounddoping. Also, certain crystallographic directions in certain semiconductors do not show Fermi-level pinning and lower growth temperatures retard or eliminate segregation effects. Devices are described which exhibit enhanced characteristics with highly accurate and other very narrow doping profiles.
Patent CA-2019233-C (CA)
Title: Method and apparatus for providing on-hook transmission for digital loop carrier channel units
Inventor: NIGHTINGALE ROGER A
IPC: H04M7/00
Filed: 1990-06-18
Granted: 1999-11-16
Abstract: An-hook VF transmission through a channel unit to a subscriber telephone instrument is provided by a control unit which generates control signals for the channel unit. The control unit responds to receipt of an "idle" code by creating commands which establish a VF path through the channel unit regardless of whether the subscriber instrument is on-hook or off-hook.
Patent CA-2026142-C (CA)
Title: Training apparatus
Inventor: WENZINGER CARL J JR
IPC: G09B9/048
Filed: 1990-09-25
Granted: 1996-10-22
Abstract: A trainee station in a tractor-trailer training apparatus includes dummy controls simulating those of a tractor,  and a display screen visible from the trainee station.   At a remote diorama or terrain model a miniature tractor-trailer is moved atop the diorama in accordance with the operation of the trainee's dummy controls.  A plurality of video cameras mounted within the cab of the miniature tractor provide video signals which are displayed on the mentioned screen.   The fields-of-view of two of the video cameras  embrace  miniature  rearview  mirrors  on  the  miniature tractor, providing realistic views of portions of the trailer as trainee operation of the controls moves the miniature tractor-trailer about the diorama.
Patent CA-2027139-C (CA)
Title: Apparatus and method for conserving power in an electronic coin chute
Inventor: BERG EILERT J
IPC: H04M17/02
Filed: 1990-10-09
Granted: 1994-10-11
Abstract: An electronic coin chute (ECC) for use in a public telephone station has only a small amount of electrical power available from the telephone line when examining coins for authenticity and denomination. To conserve power during the examination process, a plurality of coin quality sensors are used, each designed to use minimum power. Each sensor generates an oscillating magnetic field that interacts with the coin as it gravitates through the coin chute. By monitoring the output electrical signal from each coin quality sensor, the microprocessor is able to determine when the coin has moved beyond its field and, in response, power is removed from that sensor and applied to the next. After the coin's qualities have been measured, they are compared with stored acceptance limits. Power is removedfrom the last coin quality sensor and applied to a coin routing apparatus to guide acceptable coins into a collection box.
Patent CA-2028421-C (CA)
Inventor: JANISSE DWIGHT C
IPC: F04D29/70
Filed: 1990-10-24
Granted: 1995-08-01
Abstract: A hinged and quick mount guard for an electric fan.          The fan guard includes a concave, dish-shaped rear guard member having an axial opening for the reception of a fan motor shaft, and a plurality of key holes for the reception of thru-bolts on the fan motor for securing the rear guard member to the fan motor.  The fan guard includes a concave, dish-shaped front guard member hingedly and releasably retained on the rear guard member.
Patent CA-2031961-C (CA)
Inventor: COLE GARY B
IPC: H03K5/13
Filed: 1990-12-11
Granted: 1995-03-14
Abstract: A variable length shift register is formed of a plurality of flip-flops arranged to form separate shift registers of different lengths.  The shift registers are interconnected by multiplexers which connect either the input or the output of each shift register to the input of an adjacent shift register.  Control signals are provided to the multiplexers to controllably select the length of the variable shift register by selectively inserting shift registers into the variable shift register and bypassing others.
Patent CA-2032620-C (CA)
Inventor: CHUJO TAKAFUMI
IPC: H04L1/24
Filed: 1990-12-18
Granted: 1995-08-15
Abstract: A method includes the steps of a) detecting a failure which occurs in a node or link, and b) identifying at most N (N is an integer equal to or greater than 2) nodes contained in each path affected by the occurrence of the failure, each path being connected to a sender node which detects the failure, information being transferred to the sender node via the N nodes, and the sender node serving as a start point of each alternate path which is to be established.  The method also includes the steps of c) broadcasting a restoration message to links which outgo from the sender node, the restoration message having an identifier of the sender node and identifiers of the N nodes specified for each path affected by the occurrence of the failure, the identifiers of the N nodes specified for each path being candidate nodes of an end point of each alternate path, and d) determining whether or not a node being considered is one of the candidate nodes, the node which is one of the candidate nodes being a destination node. Further, the method includes the steps of e) passing the restoration message through a repeater node which is a node other than the candidate nodes, and f) determining a route via which the restoration message has been transferred to the destination node to be an alternate path connected between the sender node and the destination node.
Patent CA-2040671-C (CA)
Title: Self-synchronizing serial transmission of signaling bits in a digital switch
Inventor: MUNTER ERNST A
IPC: H04J3/06
Filed: 1991-04-17
Granted: 1994-05-03
Abstract: SELF-SYNCHRONIZING SERIAL TRANSMISSION           OF SIGNALING BITS IN A DIGITAL SWITCH            Abstract of the Disclosure Signaling bits (ABCD) from a plurality of channels are coded in a predetermined manner, multiplexed into a serial bit stream and transmitted on a data path.  A receiver for the data includes a multiple level state machine adapted to decode and synchronize to the received coded signaling bits.  Each level of the state machine is associated with a respective type of signaling bit and the levels of the state machine are cascaded output to input.  The existence of an output signal from the last stage of the state machine indicates the receiver is synchronized to the serial bit stream and thus that the receiver is properly decoding and identifying the signaling bits.                             - i -
Patent CA-2041597-C (CA)
Title: Grain cleaner and destructor of foreign matter in harvesting crops
Inventor: REYENGA JOHN
IPC: A01F12/44
Filed: 1991-05-01
Granted: 1999-12-07
Abstract: A method and apparatus for removing foreign matter from a harvested crop and for destroying the foreign matter, wherein grain produced by a threshing process is passed over a screen to allow relative fine foreign matter to fall through the screen, while the grain is conveyed to a receptacle, and the foreign matter preferably is directed to a pair of rollers operative to crush the foreign matter to present germination of any seeds therein. Foreign matter removed during the threshing process also preferably is directed to a pair of rollers for crushing.
Patent CA-2044698-C (CA)
Title: Charged organic polymer microbeads in paper making process
Inventor: HONIG DAN S
IPC: C08F220/36
Filed: 1991-06-14
Granted: 2003-09-09
Abstract: In a papermaking process, improved drainage and retention are obtained when ionic, organic microbeads of less than about 1,000 nm in diameter if crosslinked or less about than 60 nm in diameter if noncrasslinked are added either alone or in combination with a high molecular weight organic polymer, and/or polysaccharide. Further addition of alum enhances drainage formation and retention properties in papermaking stock with and without the present of other additives used in papermaking processes.
Patent CA-2046786-C (CA)
Title: Multilayer molded article and method for producing the same
Inventor: HIKASA TADASHI
IPC: B29C51/08
Filed: 1991-07-11
Granted: 2003-05-06
Abstract: A multilayer molded article has a body of thermoplastic resin and a skin material laminated on a surface of this body.      The skin material is made of an olefin thermoplastic elastomer having 100% modulus (M100) at 23°C of from 20 to 60 kg/cm2 and a frictional resistance (tan .delta.) against a metal surface of 1.0 or lower. The skin material is backed by a foam layer. The final product has a good appearance and good weather resistance.
Patent CA-2058341-C (CA)
Inventor: OGAWA KAZUFUMI
IPC: B05D1/18
Filed: 1991-12-23
Granted: 1999-10-19
Abstract: At least one monomolecule film is formed on a transparent substrate surface directly or via a protective film. The monomolecule film is formed with chemical coupling of chlorosilane surface active compound, for example) of the formula: F (C F2 ) m (C H2 ) n S i R q X3-q where m is an integer of from 1 to 15, n is an integer of from 0 to 15 provided that the total of m and n is an integer of from 10 to 30 and R is an alkyl or an alkoxyl group, or F (C F2 ) m' (CH2 ) n' A (C H2 ) p S i R q X 3-q where m' represents an integer ranging from 1 to 8, n' represents an integer ranging from 0 to 2, p represents an integer ranging from 5 to 25, q represents an integer ranging from 0 to 2, X represents a halogen atom or an alkoxyl group, R represents an alkyl or an alkoxyl group, and A represents -O-, -COO- or -Si(CH3 )2 -. The transparent substrate such as glass is made hydrophobic and free of contamination.
Patent CA-2060943-C (CA)
Title: Optical frequency deviation measure and control device for laser light
Inventor: MIYATA HIDEYUKI
IPC: H01S5/0687
Filed: 1991-09-20
Granted: 1996-01-09
Abstract: The operating point is stabilized at the MAX or the MIN of its optical frequency discriminating characteristic.  Under the stabilized operating point, the detected difference between the average of the light intensity and a set value is fed back to a data modulator so that the average value converges on a set value then a predetermined optical frequency deviation is produced. The operating point is also stabilized at the MED of said characteristic. Under the stabilized operating point, a low-frequency signal component is extracted from an electric signal output by means of synchronous detection.   The operating point is stabilized at the MAX or the MIN of said characteristic.  Under the stabilized operating point, a low-frequency signal component is twice in frequency by means of synchronous detection.  In the fourth and fifth aspects, means such as synchronous detection is not required for the stabilization control of an operating point.
Patent CA-2061237-C (CA)
Inventor: MISUDA KATSUTOSHI
IPC: B41M5/52
Filed: 1992-02-14
Granted: 2002-01-29
Abstract: A recording film comprising a transparent substrate, a porous alumina hydrate layer formed on the substrate and an opaque porous layer laminated on the alumina hydrate layer.
Patent CA-2063855-C (CA)
Title: Precision and accuracy of anion-exchange separation of nucleic acids
Inventor: BLOCH WILL
IPC: C12Q1/68
Filed: 1992-03-24
Granted: 1997-08-26
Abstract: Solvents for salt-gradient anion-exchange separation of nucleic acids, especially double-stranded DNA and especially by liquid chromatography, are improved by replacing NaCl as the eluting salt with any of a wide range of alkyl ammonium salts and can be used to elute nucleic acids in strict order of increasing length, with reduced sensitivity to elution temperature and salt concentration. Anion-exchange chromatography with these solvents is well suited for identification of DNA fragments on the basis of size, with greater accuracy, precision, and resolvable size range than often is possible with gel electrophoresis.
Patent CA-2063931-C (CA)
Title: Method of rerouting telecommunications traffic
Inventor: RYAN DEIRDRE THERESE HOESL
IPC: H04Q3/66
Filed: 1992-03-25
Granted: 1997-01-07
Abstract: This invention relates to a method and apparatus for establishing connections over a public switched telephone network to a customer whose telephone number is in a block associated, for routing purposes, with a first telephone switching system, but who is actually served by a second telephone switching system. The facility for carrying out this method is desirable in order to serve customers who need the advanced functions of a digital switching system, who are currently served by an analog switching system, and do not wish to have their telephone number changed when they switch to being served by the digital switching system. In accordance with the invention, a centralized database is queried to find the identity of the switch serving the called customer. The database returns a routing index for routing the call to that switch.
Patent CA-2067335-C (CA)
Title: Retractable suspension
Inventor: HONAN WILLIAM JOHN
IPC: B60G5/00
Filed: 1990-10-11
Granted: 2003-12-30
Abstract: A vehicle having at least one pair of wheels, a wheel support arm (1) associated with each wheel for supporting the wheel for rotation (2), one end of the arm being pivotally coupled (3) to the vehicle, a suspension component (4) secured to the arm and a mounting (7) on the vehicle having a distal end (5), a support strut (9) having one end secured to the distal end of the suspension unit and a guide member (6) for receiving the one end of the strut and the distal end for movement therealong when the vehicle is moved between a travelling position and a loading position.
Patent CA-2071314-C (CA)
Title: Non-intrusive liquid flow meter for liquid component of two phase flow based on solid or fluid borne sound
Inventor: CODY GEORGE DEWEY
IPC: G01F1/66
Filed: 1992-06-16
Granted: 2001-11-27
Abstract: The present invention is a method for measuring the mass flow rate of liquid flow exiting a two phase (gas/liquid) feed nozzle. The method includes determining the Power Spectral Density from the output of a vibrational sensor (accelerometer or dynamic pressure sensor) in close proximity to the nozzle or in contact with the fluid within the nozzle in a frequency band that includes resonant peaks whose magni-tude or area is strongly dependent on the mass flow rate of the liquid and which increases as the flow increases. Measurement of the area of the resonant peaks or of a band of frequencies that includes them can be correlated with the liquid flow and is insensitive to the gas flow.
Patent CA-2074133-C (CA)
Title: System for initiating the anionic polymerization of monomers
Inventor: BAYARD PHILIPPE
IPC: C08F297/02
Filed: 1992-07-17
Granted: 1997-05-13
Abstract: The initiating system for the anionic polymerisation of (meth)acrylic monomers and optionally of nonacrylic vinyl comonomers comprises (1) a functional initiator and (2) an alkali metal alcoholate of formula R'OM' in which M' is an alkali metal and R' is an R<1)<OR<2>)m group where R<1> is a C1-C6 alkyl or aralkyl radical, R<2> is a C2-C4 alkylene radical and m is equal to 1, 2 or 3. Application to the formation of (meth)acrylic homopolymers and of block copolymers of (meth)acrylic monomers and optionally of nonacrylic vinyl comonomers.
Patent CA-2079229-C (CA)
Title: Ubiquitin-specific protease
Inventor: VARSHAVSKY ALEXANDER J
IPC: C12N9/60
Filed: 1991-05-08
Granted: 1999-09-14
Abstract: A ubiquitin-specific protease which cleaves ubiquitin from any protein or peptide to which ubiquitin is joined and the gene encoding the protease are disclosed. The protease specifically cleaves the peptide bond in a fusion of ubiquitin to a protein or peptide between the carboxyl-terminal amino acid residue of a ubiquitin moiety and the .alpha.-amino group of any non-ubiquitin protein or peptide to which ubiquitin is joined. Recombinant expression vectors containing a DNA sequence encoding the ubiquitin-specific protease can be used to transform cells for production of the protease or to provide the cell with the ability to proteolytically deubiquitinate, in vivo, ubiquitin fusions co-produced by the cell. The protease can also be isolated and used to deubiquitinate ubiquitin fusions in vitro. For those proteins or peptides whose functional activity is inhibited or otherwise modified by th e presence of a ubiquitin moiety, this moiety can be used as a temporary inhibitor (or modifier) of the activity of a protein or peptide, whith the ubiquitin-specific protease employed to restore, by deubiquitination, the original activity of the protein or peptide.
Patent CA-2080625-C (CA)
Title: Cutting device for a winding machine for winding a web of material, particularly a paper web
Inventor: RUFF HANS-ALBRECHT
IPC: B65H19/26
Filed: 1992-10-15
Granted: 1998-04-21
Abstract: The invention relates to a cutting device for a winding machine for winding a web of material, particularly a paper web, the winding machine having two support rollers, one of the support rollers being partially wrapped by the web of material which is advanced upward from underneath the support rollers and introduced into a space between the support rollers, to be wound into a finished roll which rests on the winding bed formed by the two support rollers.  A tiltable cutting device includes a blade, a blade carrier, a connecting link, and a support structure.  The blade carrier and the support structure are pivotally connected to each other by the connecting link in such a manner that the blade carrier can be tilted into a position in which the blade faces the web of material while the opposite end of the blade carrier rests against the outer surface of the unwrapped support roller.
Patent CA-2081139-C (CA)
Title: Process for control of molecular weight distribution in polymers
Inventor: SHERVIN CARL RANDE
IPC: C08F220/00
Filed: 1992-10-22
Granted: 2003-12-09
Abstract: This invention relates to a polymerization process for producing polymers with narrow molecular weight distributions. It comprises addition of monomer and initiator to a reaction vessel using a selected monomer feed profile and an initiator feed profile calculated from a polymerization kinetics relationship between a selected degree of polymerization and monomer concentration, initiator concentration, reaction temperature and a polymerization efficiency factor to obtain an approximately constant degree of polymerization for polymer produced during the polymerization process. The polymerization efficiency factor accounts for deviations from ideal kinetics relationships. This process can be used in a semi-batch or semi-continuous mode as a method of producing polymers with narrow molecular weight distributions, particularly acrylate and methacrylate polymers.
Patent CA-2083407-C (CA)
Title: Microorganisms for the stabilization of plasmids
Inventor: ZIMMERMANN THOMAS
IPC: C12N15/52
Filed: 1992-11-20
Granted: 2002-07-30
Abstract: New microorganisms with plasmids stable with respect to betaine utilization. These new microorganisms contain (a) a hybrid plasmid with a DNA fragment that contains a genetic sequence that codes for betaine utilization and (b) a mutation in the chromosomal gene coding for betaine utilization.
Patent CA-2087114-C (CA)
Title: Sliding-lifting roof for automobiles
Inventor: SCHLAPP ALBERT
IPC: B60J7/05
Filed: 1993-01-12
Granted: 1995-10-10
Abstract: In a sliding-lifting roof or top sliding-lifting roof for automobiles, comprising a sliding lid slidably guided on lateral guide rails and pivotal upwards by means of driven rear guide shoes for ventilation, the outward pivoting and inward pivoting take placethrough specially constructed guide blocks, fixed to the sliding lid, which cooperate with the rear guide shoes not only by guide slits but also by control levers. In this way, in the interests of an improved stability of the lid, the outward pivoting and inward pivoting movements of the sliding lid are divided into two movement phases, which are created, on the one hand, by the engagement, which can be cancelled, of guide pins with the guide slits in the guide blocks and, on the other hand, by the control levers, articulated to the rear guide shoes and connected rotatably and displaceably to the guide blocks.