baber/WOPTO huggingface dataset:
Patent CA-2002401-C (CA)
Title: A package and lid with controlled tearing means
Inventor: BICKELHAUPT ROGER G
IPC: A61M25/00
Filed: 1989-11-07
Granted: 1999-04-13
Abstract: A package having a peelable lid with a controlled tearing guide, comprising a) a bottom tray having an inner surface defining a receptacle for an object to be packaged and a continuous  rim extending around the periphery of the tray and projecting into the interior of the tray at least once at a given point on the periphery to define two compartments  in the tray joined by a channel; b) a lid extending over the bottom tray and having a peripheral  edge  portion  continuously overlying the peripheral rim of the bottom tray and  having a predetermined tear  line overlying said inward projecting portion of the rim; c) a heat seal  coating applied  to the  interior  surface  of  the  lid  in contact with  the  continuous  rim of the  bottom tray for heat sealing the lid to the bottom tray; and d) a controlled tearing guide  on  the  lid  for  guiding  the  tear  line  across  one compartment of the tray so that the other compartment of the tray is not exposed when the lid is selectively torn open along the predetermined tear line.
Patent CA-2010164-C (CA)
Inventor: OLECH LEE J
IPC: A61K47/68
Filed: 1990-02-15
Granted: 2000-08-29
Abstract: The present invention relates to novel immuno-conjugates, methods for their production, pharmaceutical compositions and methods for delivering cytotoxic anthracyclines to a selected population of cells desired to be eliminated. More particularly, the invention relates to immunoconjugates comprised of an antibody reactive with a selected cell population, having a number of anthracycline molecules linked to its structure. Each anthracycline molecule, having a keto group at the C-13 position, is conjugated to the antibody via a linker arm and is bound to that linker arm via an acid-sensitive acylhydrazone bond at the 13-keto position of the anthracycline. A preferred embodiment of the invention relates to an adriamycin immunoconjugate wherein a 13-keto acylhydrazone bond is the site of the adriamycin attachment to the linker arm, the linker additionally containing a disulfide or thioether linkage as part of the antibody attachment to the immunoconjugate. In addition, novel anthracycline acylhydrazone derivatives are disclosed that are useful in the preparation of the immunoconjugates of this invention.      The acid-sensitive hydrazone bond of the immunoconjugates of this invention allows the release of free anthracycline from the immunoconjugates in the acidic external or internal environment of the target cell. The immunoconjugates and methods of the invention are therefore useful in antibody-mediated drug delivery systems for the preferential killing of a selected cell population in the treatment of diseases such as cancers and other tumors, non-cytocidal viral or other pathogenic infections, and autoimmune disorders.
Patent CA-2010948-C (CA)
Title: Street manhole cover lifting device
Inventor: PRESCOTT ALAIN
IPC: B65D90/10
Filed: 1990-02-26
Granted: 1992-11-17
Abstract: MANHOLE COVER ANNULAR SUPPORT FOR REPAVED STREET     ABSTRACT OF THE DISCLOSURE     In a street manhole defining an elongated manhole duct provided with a rigid collar at its top mouth, the collar having a radially inward annular cavity defining a base wall, parallel to the plane of the collar and a side wall, orthogonal to the base wall.  The collar further defines a top wall parallel to the base wall.   A spacer device is provided for raising the cover level from the collar base wall, and defines: (a)  a first rigid ring, destined to sit on the collar base wall;  (b)   a second rigid ring, diametrally larger than the first ring and destined to sit on the collar top wall; and (c)  connecting tongues, for coaxially  interconnecting  the  rings  about  spaced planes,  the connecting tongues being flexible and capable of bending under load, so as to bring the first ring to sit against the collar base wall and the second ring to sit against the collar top wall.          The tongues will bend longitudinally so as to pivot about their lengthwise axes upon being responsive to a biasing load being applied transversely to the plane of at least one of the cover member and the second ring.
Patent CA-2011044-C (CA)
Title: Apparatus and method for handling harmful materials
Inventor: ATKINSON WILLIAM FRANCIS
IPC: B08B9/02
Filed: 1990-02-27
Granted: 2000-04-04
Abstract: In an apparatus for stripping material from an object, for example for removing asbestos from a length of pipe, an enclosure means having a closable opening for receiving the object has an outlet means 7, which may lead to a neck portion 8, and through which stripped material can be removed from the enclosure. The outlet means 7 has a periphery smaller than the periphery of that part of the enclosure immediately above it. The enclosure enables materials such as linings or lagging to be stripped from substantial areas, without the enclosure being filled.
Patent CA-2016919-C (CA)
Title: Photosensitive resin compositions
Inventor: NANPEI MASARU
IPC: G03F7/027
Filed: 1990-05-16
Granted: 2003-07-29
Abstract: A photosensitive resin for use in the preparation of flexographic printing plates has elasticity, good ink resistance and is capable of being developed using an aqueous system. It is formed from a hydrophobic polymer having a glass transition temperature not higher than 5°C, a lesser quantity of a hydrophylic polymer, an ethylenically unsaturated compound, a solvent in which the hydrophobic polymer is more soluble than the hydrophylic polymer, and a photopolymerization initiator. A plate coated with such a resin is also disclosed.
Patent CA-2018403-C (CA)
Title: N-phenylpyrazole derivatives
Inventor: ROBERTS DAVID ALAN
IPC: C07D231/28
Filed: 1990-06-06
Granted: 2000-08-22
Abstract: The invention provides N-phenylpyrazole derivatives of the formula:   (see formula I) wherein R1 represents alkyl optionally substituted by halogen, R2 represents alkyl, alkenyl or alkynyl optionally substituted by halogen, R3 represents a phenyl group substituted in the 2-position by halogen; in the 4-position by optionally halo substituted alkyl or alkoxy; and optionally in the 6-position by halogen; and m and n are independently 0, 1 or 2; which are active against arthropood, plant nematode, helminth and protozoal pests.
Patent CA-2024558-C (CA)
Title: Thin sanitary napkin having a central absorbent zone and a method of forming the napkin
Inventor: SERBIAK PAUL JOHN
IPC: A61F13/15
Filed: 1990-09-04
Granted: 2002-04-02
Abstract: A thin sanitary napkin is disclosed along with its method of manufacture. The napkin has a liquid-impermeable baffle and an absorbent retained on the baffle. The absorbent has a longitudinally-extending central absorbent zone with a width of less than about 2 inches. The central zone is capable of absorbing at least 20 grams of body fluid which is discharged from the vaginal cavity and deposited onto the napkin. The central zone also has a greater stiffness than adjacent portions of the napkin so as to resist twisting and bunching during use. The sanitary napkin further has a caliper of less than about 5 millimeters.
Patent CA-2029558-C (CA)
Title: Automated approach speed control for an airplane
Inventor: DE VRIES LUITZEN
IPC: F02C9/58
Filed: 1990-11-08
Granted: 1995-02-07
Abstract: A flight control system of a turboprop airplane comprises electronic controlled engines, which are governed by means of a manual operating device for setting the engine power in order to obtain a certain airspeed, a device for selecting a desired airspeed, and an engine control system for computing and controlling the required engine torque and speed as a function of ambient ant engine conditions, the selected engine speed and the setting of said operating device. For automatically controlling the engine speed during the final approach to an airfield, the system comprises an electronic approach speed control unit of which the adjustment signal influences the engine control device keeping the speed of the airplane during approach at a selected value whereby said manual operating device has a fixed setpoint. This electronic speed control unit may be carried out as an add-on device for retrofitting on a  flight control system.
Patent CA-2033673-C (CA)
Title: Fibre-optic apparatus for the photodynamic treatment of tumours
Inventor: WAGNIERES GEORGES
IPC: H01S3/00
Filed: 1991-01-07
Granted: 2001-11-20
Abstract: A bronchoscope has a fibre-optic apparatus for the photodynamic treatment of tumours in the region of the furcate branches of the bronchi, the divergent pencil of rays (13), which emerges from the end face (4) of an optical fibre, striking a lens arrangement consisting of two microlenses (14, 15) which, owing to the spherical aberration, deflect edge rays (23) in the divergent pencil of rays (13) of the optical fibre (8) in such a manner that a homogeneous sharp-edged emerging pencil of rays is formed.
Patent CA-2035894-C (CA)
Title: New acrylic copolymers and their use for coating bituminous materials
Inventor: LEGROS ROBERT
IPC: C09D133/04
Filed: 1990-07-03
Granted: 1997-04-01
Abstract: PCT No. PCT/FR90/00504 Sec. 371 Date May 6, 1991 Sec. 102(e) Date May 6, 1991 PCT Filed Jul. 3, 1990 PCT Pub. No. WO91/00881 PCT Pub. Date Jan. 24, 1991.Acrylic copolymer comprising, per 100 parts by weight: approximately from 2 to 65 parts by weight of at least one polyoxyether (meth)acrylate of formula:   <IMAGE> (I)   in which: R1 is a methyl radical or a hydrogen atom, R2 is a hydrocarbon radical containing from 1 to 18 carbon atoms, 1</=m</=20 and 1</=n</=20, from 1 to 6 parts by weight of (meth)acrylic anhydride, from 0 to 65 parts by weight of at least one fluoroalkyl (meth)acrylate, and from 0 to 97 parts by weight of at least one alkoxyalkyl (meth)acrylate. Process for coating a bituminous material, according to which the said material is coated with a formulation comprising an aqueous dispersion of a copolymer such as defined above.
Patent CA-2036867-C (CA)
Title: Oil drainage coupler
Inventor: DORF ARKADY
IPC: F16L37/28
Filed: 1991-02-21
Granted: 1996-06-25
Abstract: An oil drainage coupler that enables a single fitting to be coupled to associated oil drainage plugs of various sizes thereby enabling oil to be quickly drained from all makes and models of vehicles. This coupler produces a vacuum-tight seal that enables a vacuum pump to be used to enhance the rate at which oil is drained. The two halves of this coupler can be coupled by a rotation of one half into the other by an angle less than 90°, thereby making this a quick coupler that can be coupled by a single quick motion of vehicle service personnel.
Patent CA-2039004-C (CA)
Title: Energy absorber for horizontal lifelines in fall arrest systems
Inventor: SULOWSKI ANDREW C
IPC: A62B35/00
Filed: 1991-03-25
Granted: 1995-02-21
Abstract: An  energy  absorber  for  a  fall  protection  system employing a horizontal lifeline comprises an elongate, flexible strength component to opposite ends of which is transmitted the tension shock load produced in the lifeline by arresting a fall and a plurality of sequential energy components operatively connected to the strength component, so that tension applied at opposite ends of said strength component is borne by each of said energy absorbing components and only after its predecessor has broken.   The breaking strength of each energy absorbing component, which may be a linear segment of stainless steel aircraft cable, is selected not exceed a desired maximum arrest load.  The number of energy absorber components is selected so that not all of them will break when the fall protection system arrests the fall of an object of a predetermined mass falling freely a predetermined distance.
Patent CA-2039220-C (CA)
Title: Facsimile apparatus
Inventor: KOTANI MATAHIRA
IPC: H04M1/725
Filed: 1991-03-27
Granted: 1995-01-10
Abstract: ABSTRACT OF THE DISCLOSURE    A facsimile apparatus provided with a telephone function for transmitting and receiving voice signals over a public telephone line and a facsimile function for transmitting and receiving image signals over the public telephone line including a parent machine connected to the public telephone line, and having the telephone function and the facsimile function, and a child machine linked with the parent machine by radio, and having the telephone function.  The parent machine notifies the child machine of completion of transmission or reception of image information when the transmission or reception of the image signal is completed.
Patent CA-2041678-C (CA)
Title: On channel agile fm demodulator
Inventor: MARZ DANIEL
IPC: H03D3/24
Filed: 1991-05-02
Granted: 1995-11-14
Abstract: An on channel frequency agile phase lock loop ("PLL") demodulator  is  provided  using  a  precise  and  stable oscillator, such as a voltage controlled crystal oscillator ("VCXO")  having  its  output  frequency variable  over  a limited range.  The output of the oscillator is multiplied by a multiplication factor to produce a mixing frequency.          The multiplication factor scales the limited range of the oscillator to produce a proportionate mixing frequency deviation.  A frequency synthesizer is used to enable the demodulator to detect signals on different channels.   In one embodiment, the output of the frequency synthesizer is mixed with the scaled oscillator output to provide a mixing frequency having a fixed deviation for all channels.  The demodulator can be used for detecting data transmitted over a cable television network.
Patent CA-2043399-C (CA)
Title: Rubber compositions containing high purity lignin derivatives
Inventor: LORA JAIRO H
IPC: C08L21/00
Filed: 1991-05-28
Granted: 1996-04-30
Abstract: A tackifier composition for use in rubber compounds is disclosed.   The tackifier comprises a pure lignin with a water solubility of up to 1% by weight and a carbohydrate level of  less  than  50%  by weight.   In another embodiment of the invention, the pure lignin functions as both a tackifier and an antioxidant.   In  yet  another  preferred  embodiment  of  the invention, the improved tackifier produces synergistic results when blended with a commerical tackifier, and the antioxidant likewise  yields  synergistic  results  when  mixed  with  a commercial antioxidant.
Patent CA-2051422-C (CA)
Title: Feedstuffs for ruminants
Inventor: SASAOKA SEIJI
IPC: A23K1/18
Filed: 1991-03-02
Granted: 1996-03-19
Abstract: A ruminant feedstuff formulated to pellet which consists of biologically active substances such as amino acids and vitamins dispersed in a protectant containing bi-valent metal salts of mixed fatty acid as a main component and of which the void ratio and moisture content are controlled to be well balanced between properties of rumen bypassing and digestion and absorption at abomasum and the followed digestive organs.
Patent CA-2057932-C (CA)
Title: Continuous controlled drainage
Inventor: HANSEN VICTOR EMANUEL
IPC: D21F9/02
Filed: 1990-06-07
Granted: 1996-01-16
Abstract: A process and apparatus for improving paper formation on an open surface paper making machine is described. By the use of both a path for the forming fabric which introduces a controlled level of agitation into the stock, and a low level of vacuum in a suction box extending continuously for the forming section, improvements both in paper quality, such as improved wire mark, and in machine operation, such as an improved first pass retention, are obtained.
Patent CA-2062345-C (CA)
Title: Roller head for a resistance seam-welding machine
Inventor: PORTMANN NIKLAUS
IPC: B23K11/36
Filed: 1992-03-05
Granted: 1996-02-20
Abstract: A pendulum roller head (210) for a resistance seam-welding machine is described, having a sliding contact current transmission device (224) between a stator (220b) and a rotor (223), which device is composed of an annular disc (226) which extends radially between rotor and stator, is fastened by its outer circumference to the stator, carries an axial sliding contact ring (232) on its inner clrcumference, and is flexibly designed in its bridging part (228) between the inner and outer circumferences.  The sliding contact disc (226) is composed of a copper braid to which the axial sliding contact ring (232) is fastened.  The sliding contact current transmission device (224) in the form of the disc (226) with a flexible bridging part (228) replaces the current transmission device in the form of fluid metal which has formerly been in use in pendulum roller heads.
Patent CA-2064634-C (CA)
Inventor: HECK JAMES V
IPC: A61P31/04
Filed: 1992-04-01
Granted: 1998-08-04
Abstract: Compounds of the formula:     <see fig.I>
Patent CA-2064640-C (CA)
Title: Storage protection utilizing public key control
Inventor: CLARK CARL E
IPC: G06F21/80
Filed: 1992-04-01
Granted: 1995-12-12
Abstract: Provides three access levels of storage key protection, comprising  a  supervisory  level  (key 0),  an  intermediate level  of non-public  and non-supervisory keys  (keys  1-8, 10-15),  and a unique public  level  (key 9).  The program routines operating with a supervisory-level access key can access both the public level and the intermediate level of storage blocks.  Although a program routine operating with an access key in the intermediate access level cannot access any supervisory level storage block, it can access any block assigned a public level storage key, as well as any storage block assigned the respective intermediate level key.  One or  more  third-level  public  storage  keys  (PSKs)  may  be provided. A program access key using one of the PSK values can only access blocks having the same PSK value,  and it cannot access blocks having any other key value.
Patent CA-2067562-C (CA)
Title: Frequency doubler with a variable delay circuit and exclusive or gate
Inventor: TATSUMI SATOSHI
IPC: H03K3/017
Filed: 1992-04-29
Granted: 1997-04-22
Abstract: A doubling circuit for adjusting the duty ratio of an output signal automatically and implemented as a digital circuit.  A variable delay circuit delays an input signal while an exclusive-OR (EOR) gate produces EOR of the output signal of the delay circuit and the input signal.  The resulting output of the EOR gate has a frequency double the frequency of the input signal.  A low pass filter (LPF) filters the output signal of the EOR gate to produce a mean voltage thereof.  An integrating circuit integrates a difference between the output voltage of the LPF and a reference voltage.  The delay of the variable delay circuit is controlled by the output of the integrating circuit.  As a result, the doubled signal from the EOR gate has the duty ratio thereof automatically adjusted.
Patent CA-2072567-C (CA)
Title: Carbon blacks imparting superior treadwear/hysteresis performance
Inventor: SHIEH CHIUNG-HUEI
IPC: C08L21/00
Filed: 1991-01-08
Granted: 2001-10-23
Abstract: Carbon blacks having a CTAB ~ (I2 No. + 5 m2/g); a CDBP ~ 104 cc/ 100g; a Tint of (0.5(CTAB) + 70 m2/g > Tint > 0.5(CTAB) + 60 m2/g and an ASTM aggregate volume ~ 480,000 (nm)3. Also disclosed are rubber compositions in which the carbon blacks are incorporated.
Patent CA-2073290-C (CA)
Title: Fracturing method and apparatus
Inventor: THIERCELIN MARC JEAN
IPC: E21B33/124
Filed: 1992-07-07
Granted: 2003-01-14
Abstract: A method of fracturing an underground formation traversed by a borehole comprising: a) placing an inflatable member inside the borehole in the formation to be fractured, b) inflating the member so as to exert stress on the formation while monitoring the pressure of a fluid used to inflate the member so as to determine the pressure at which fracture initiates; c) isolating the portion of the borehole containing the fracture; d) propagating the fracture by pressurizing the interval with fluid; and e) monitoring the pressure of the fluid in the interval during propagation.
Patent CA-2073724-C (CA)
Inventor: MULLER RUDOLF R M
IPC: A43D100/14
Filed: 1992-07-13
Granted: 2003-05-27
Abstract: A fastener assembly, a fastener assembly assembled to a member, and a method of attaching a fastener assembly to a member is disclosed. The fastener assembly includes a male fastener element which is fastened to a female fastener element wherein the male fastener element is adapted to engage and pierce through a panel. The female fastener element is adapted to rivet itself to the panel thereby forming a secure mechanical interlock between the female fastener and the panel. In a preferred embodiment, the female and male fastener include threaded surfaces which cooperatively engage one another thereby permitting the male fastener to be easily removed and used to fasten a structural member, or the like to the female fastener/panel assembly. While the fastener assembly is particularly suited for self-piercing applications, it may be used equally well in pre-pierced panel applications.
Patent CA-2074377-C (CA)
Title: Channel nut
Inventor: KOWALSKI JOSEPH W
IPC: F16B37/04
Filed: 1991-07-01
Granted: 1995-05-30
Abstract: A channel nut (1) which can be economically made for securing parts to metal framing (7) having side flanges (9a, 9b) with inwardly turned, hook-shaped lips (11) defining a slot (S) therebetween. The channel nut comprises an elongate body having a base (23) with inside (23a) and outside (23b) faces, opposite sides (25) and opposite ends (27), a width less than that of the slot and a length greater than the width of the slot. The base includes side flanges (29) and is preferably rhomboid in shape. A tapped hole (21) extends through the base.
Patent CA-2078225-C (CA)
Title: Pressure-sensitive adhesives based on preferentially tackified immiscible elastomers
Inventor: SASAKI YUKIHIKO
IPC: C09J121/00
Filed: 1991-03-13
Granted: 2002-09-17
Abstract: A pressure sensitive adhesive of a mutually immiscible first elastomer (styrene-butadiene block copolymer) exhibiting a first glass transition temperature and a second elastomer (e.g., a styrene-isoprene-styrene block copolymer) exhibiting a second glass transition temperature greater than the first is tackified by a tackifying system comprising tackifier preferentially miscible with the second elastomer to provide a dynamic mechanical spectrum plot of tangent delta versus temperature in °C showing two separate and distinct glass transition temperature peaks. The mixture exhibits excellent processability and ambient and low tem-perature adhesive properties.
Patent CA-2098036-C (CA)
Title: Spatial/frequency hybrid video coding facilitating the derivation of variable-resolution images
Inventor: PURI ATUL
IPC: H04N7/50
Filed: 1993-06-09
Granted: 1998-08-11
Abstract: An adaptive technique for video encoding and decoding which facilitates the transmission, reception, storage, or retrieval of a scalable video signal.  The invention allows this scaling to be performed in both the spatial and frequency domains.  In a specific embodiment of the invention, video encoding is adaptively performed based upon a selection from among a multiplicity of compatible spatial-domain predictions from previously decoded images, and a selection of compatible predictions obtained from up-sampling decoded lower resolution images.  The decoded lower resolution images correspond to a current temporal reference, and at least one of  these lower resolution images is encoded in more than one frequency domain scales.  In yet another embodiment of the invention, one lower resolution signal is encoded (without reference to any other low resolution signal) by employing the MPEG-1 standard, with a modified partitioning of  the resultant bistream into two or more frequency scale bitstreams.  The decoded images from these bitstreams are employed in the spatial prediction of a higher resolution layers.
Patent CA-2104828-C (CA)
Title: Ink, and ink-jet recording method and instrument using the same
Inventor: NAGASHIMA AKIRA
IPC: C09D11/00
Filed: 1993-08-25
Granted: 1997-02-18
Abstract: Disclosed herein is an ink comprising at least a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the viscosity of the ink reaches a maximum peak in a pH range of from 4 to 10.