baber/WOPTO huggingface dataset:
Patent CA-2020656-C (CA)
Inventor: FLOHE LEOPOLD
IPC: C12N9/64
Filed: 1990-07-06
Granted: 2001-05-22
Abstract: Plasmids containing synthetic DNA sequences are described which are suitable for the expression of the intermediate protein of the rscu-PA (i.e. the unglycosylated protein moiety of the single chain prourokinase) in Enterobacteriaceae, especially in E.coli, with expression rates far higher than those obtainable according to the state of the art. The plasmids according to the invention are characterized in that their operons include a regulatable, optionally synthetic promotor, a Shine-Dalgarno sequence, a start codon, a synthetic structural gene and downstream of the structural gene 1 to 2 terminators. The preparation of the plasmids as well as that of the synthetic DNA-sequences starting from commercially available plasmids etc. is described. The intermediate protein expressed in high yields by using the plasmids for transforming suitable hosts may be refolded in a manner known per se to the therapeutically (as plasminogen activator) useful rscu-PA which also optionally may serve as a starting material for obtaining the two chain unglycosylated urokinase protein (rtcu-PA) on a technical scale by splitting the single chain product in a manner known per se.
Patent CA-2021094-C (CA)
Title: Dynamic video system including automatic contrast and white-stretch processing sections
Inventor: LAGONI WILLIAM ADAMSON
IPC: H04N5/14
Filed: 1990-07-12
Granted: 2000-09-26
Abstract: A television system is disclosed including sections for limiting peak white drive to a display device (e. g., of the direct view or projection type) while maintaining relatively high subjective image contrast and brightness. Specifically, the system includes an automatic contrast control section for controlling the amplitude of the luminance signal in response to the peak value of a luminance-representative image component signal preceded by a "white-stretch" control section for emphasizing mid-range luminance components relative to high-range luminance components as a function of the average value of the luminance-representative image component. In this way, spot blooming and display driver saturation can be minimized while providing subjectively sharp, bright pictures.
Patent CA-2028632-C (CA)
Title: Fastener for carbon fibre structure
Inventor: PEGG LESLIE
IPC: F16B33/00
Filed: 1990-10-26
Granted: 2001-07-10
Abstract: A lightning resistant composite structure, particularly for aircraft, in which a composite skin panel, for example of carbon fibre, is attached to an inner composite structure by one or more lightning resistant fastener assemblies. The fastener assembly comprises a nut and bolt, the bolt being in good conductive contact with a conductive sleeve engaging the skin panel and a non-conductive sleeve engaging the inner structure. The nut is contained within a capped nut assembly located to the undersurface of the inner structure.      The non-conductive sleeve and the capped nut assembly isolate the inner structure from the effects of lightning strike, the conductive sleeve providing a high quality conductive interface between the bolt and the skin panel.      By this means adverse penetration of lightning current into the inner structure is prevented.
Patent CA-2028808-C (CA)
Title: Dislocation free compound semiconductor wafer
Inventor: IWASAKI TAKASHI
IPC: H01L21/20
Filed: 1990-03-15
Granted: 1994-10-04
Abstract: ABSTRACT OF THE DISCLOSURE         A compound semiconductor epitaxial wafer has a heteroepitaxial   crystal   layer  grown   on   a   compound semiconductor crystal substrate, which has a substantially circular configuration and is free of dislocation defects at least in a central area surrounded by a cut-off that prevents defects from propagating radially inwardly into said central area.
Patent CA-2041207-C (CA)
Title: Cavity monitoring system
Inventor: MILLER FABIEN
IPC: G01S7/481
Filed: 1991-04-25
Granted: 1994-05-24
Abstract: A cavity monitoring system comprises a supporting system adapted to be installed in an access leading to a mined stope, or any other cavity, a mast mounted on said supporting system and adapted to extend into the cavity, and a laser mounted at the end of the mast.  The laser is capable of being rotated around the axis of the mast and directed at the wall of the cavity at angles varying from 0 to 145 degrees from the axis of the mast so as to scan concentric circles on the wall of the cavity permitting to take series of distance measurements to obtain the shape and volume of the cavity.
Patent CA-2042963-C (CA)
Title: Can carton
Inventor: OLIFF JAMES R
IPC: B65D71/00
Filed: 1991-05-21
Granted: 1995-01-17
Abstract: CAN CARTON                  ABSTRACT OF THE DISCLOSURE A plurality  of cans  each having a cylindrical side wall and inwardly recessed bottom and top portions, the carton including a top wall, a first pair of continuous uninterrupted bevel strips foldably joined to  the  side  edges  of  the top wall,  side  walls  foldably  joined  along  their  top  edges respectively to the first pair of bevel strips,  a second pair of  continuous  uninterrupted  bevel  strips  foldably  joined respectively along the bottom edges of the side walls, a pair of lap  panels foldably  joined respectively  along the bottom edges of the second pair of bevel strips  and secured together in overlapping relation, an anchoring panel foldably joined to each end edge of each side  wall and  folded  into  flat face contacting relation  with the  inner surface of the associated side wall, and web  structure foldably  joined to  each end of each of the anchoring panels and to the adjacent corner of the top wall and of the composite bottom wall,  the web structures being respectively  disposed astride the corners of the carton and  in   engagement  with   the  adjacent   cans  to  prevent dislodgement of the cans from the carton.
Patent CA-2045250-C (CA)
Title: Echo canceler having adaptive digital filter unit associated with delta-sigma modulation circuit
Inventor: TAKAHASHI YUTAKA
IPC: H03H17/02
Filed: 1991-06-21
Granted: 1997-03-18
Abstract: An echo canceler comprises an adaptive digital filter circuit for producing an echo replica signal on the basis of a transmit digital signal and a first digital signal indicative of a far-end signal,  and an adder for eliminating the echo signal from a received signal with reference to the echo replica signal, wherein the echo replica signal is modulated by a delta-sigma modulation circuit and, thereafter, converted into an analog signal for allowing the adder to operate on the echo replica signal and the received signal both in an analog form so that the adder with a narrow dynamic range can be available.
Patent CA-2050833-C (CA)
Title: Manhole grade adjusting ring and method
Inventor: ODILL FRANK J
IPC: E02D29/14
Filed: 1991-09-06
Granted: 1996-04-23
Abstract: A manhole grade adjusting ring has an adjustable diameter with a V-shaped expansion lock bridging the ends of the ring.  The expansion lock has radial flanges which are adjustably pinned in slots in the ends of the ring after the ring is expanded or contracted to fit a particular manhole frame using an expansion/contraction tool.  The "V" is then hammered to expand the diameter of the ring so as to form a tight friction fit between the ring and the manhole frame.
Patent CA-2052292-C (CA)
Title: Gear oil compositions
Inventor: RHODES ROBERT B
IPC: C10N30/02
Filed: 1991-09-26
Granted: 2002-07-30
Abstract: The invention provides gear oil compositions comprising a base oil and a hydrogenated star polymer comprising at least four arms, each arm comprising, before hydrogenation, polymerised conjugated diene monomer units and having a weight average molecular weight in the range of from 3,000 to 15,000; a method of preparing said compositions; and the use of said hydrogenated star polymers as viscosity index improver additives in gear oil compositions.
Patent CA-2052368-C (CA)
Title: Perfluorinated polyimide, perfluorinated poly(amic acid), starting compounds therefor, and methods for preparing them
Inventor: ANDO SHINJI
IPC: C07D493/04
Filed: 1991-09-26
Granted: 1998-09-15
Abstract: A perfluorinated polyimide comprising a repeating unit represented by general formula (1):     (see fig. I) and a perfluorinated poly(amic acid) comprising a repeating unit represented by general formula (6):     (see fig. II) wherein R1 is a tetravalent organic group; and R2 is a divalent organic group, provided that chemical bonds between carbon atoms and monovalent elements contained in R1 and R2 are exclusively carbon-to-fluorine bonds; methods for preparing them; and optical material including the perfluorinated polyimide.  l,4-Bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene dianhydride, 1,4-difluoropyro-mellitic anhydride, 1,4 bis(3,4-dicarboxytrifluorophenoxy) tetrafluorobenzene, 1,4-difluoropyromellitic acid, and 1,4-bis(3,4-dicyanotrifluorophenoxy) tetrafluorobenzene as well as methods preparing them.  The perfluorinated polyimide has a thermal stability and has a low optical loss in an optical communication wavelength region (0.8 to 1.7 µm).
Patent CA-2052581-C (CA)
Inventor: ERICKSON JOHN W
IPC: H01H31/12
Filed: 1991-10-01
Granted: 1996-09-10
Abstract: A multi-pole load break switch having two sets of contacts in each pole connected in series to isolate its fuse. Also disclosed is a circuit incorporating the switches of the invention in a double-ended switch board having two power supplies normally isolated from each other.
Patent CA-2059462-C (CA)
Title: Beater mill with integrated centrifugal classifier
Inventor: PALLMANN WILHELM
IPC: B02C13/08
Filed: 1992-01-16
Granted: 1995-12-05
Abstract: The invention relates to beater mills in the grinding chamber of which there rotates a beater rotor which is fitted on its circumference with beater tools and is surrounded by a cylindrical grinding surface adjoined by a  coaxial  centrifugal  classifier.  The  centrifugal classifier is variably defined by retaining rings having different  retaining  rim  heights,  the  rings  bearing against the outlet-side end faces of the grinding surface so as to determine the classifying effects.
Patent CA-2060807-C (CA)
Title: Scroll compressor including drive pin and roller assembly having sliding wedge member
Inventor: RICHARDSON HUBERT JR
IPC: F04C29/06
Filed: 1992-02-04
Granted: 1994-09-13
Abstract: A swing-link radial compliance mechanism for scroll compressors which minimizes the damage and wear caused by chattering vibrations.  The eccentric crankpin has a planar surface and a wedge is disposed in the bore of the roller, between the planar surface of the crankpin and the arc surface of the roller.  The wedge has a flat surface for transferring chattering vibrations focused on an axial line of force to the planar surface of the crankpin.  Also, an arcuate surface of the wedge engages the arc surface of the roller and allows for rocking movement of the wedge.
Patent CA-2062980-C (CA)
Title: Hybrid modulation apparatus
Inventor: CAHILL STEPHEN V
IPC: H04L27/20
Filed: 1991-05-15
Granted: 1996-10-22
Abstract: A .pi./4-shift differential quadrature phase shift keying (DQPSK) modulator modulates a digitized voice signal and other information.  A frequency modulation (FM) modulator modulates the analog voice signal and other information.  The FM modulator is coupled to the quadrature mixers (109 and 110) of the .pi./4-shift DQPSK modulator.  When an FM modulated signal is required, the mixers (109 and 110) are biased (114) to allow carrier feedthrough by applying a fixed, non-zero DC signal to one or both mixers (109 and 110).  The carrier is then FM modulated using conventional methods such as voltage-modulation of a phase locked loop (PLL)(113). When .pi./4-shift DQPSK is to be generated, the conventional baseband I and Q vector-length signals (101 and 102) are applied to the mixers (109 and 110), and the carrier is left unmodulated by switching (115) out the input signal to the PLL (113).  The PLL (113) will then generate only the carrier frequency to be mixed with the I and Q vector-length signals (101 and 102).
Patent CA-2064771-C (CA)
Title: Cleaning small diameter clogged holes
Inventor: PEDERSEN BENNY
IPC: B29C48/03
Filed: 1990-08-15
Granted: 2002-06-18
Abstract: A cleaning process and apparatus for cleaning small diameter clogged holes or passages fashioned as deep through-holes or small diameter through-holes of varying sizes. The holes may be provided in dies for enabling a pressing of materials for manufacturing of pellets such as feed stuff pellets. The cleaning is effected by directing at least one water jet having a diameter less than one-half of a smallest diameter of the hole or passage to be cleaned. The cleaning medium is supplied possibly at supersonic speed. It is also possible to clean radially oriented holes or passages in the die by ejecting the cleaning medium from nozzles of the apparatus.
Patent CA-2069783-C (CA)
Title: Heat exchanger
Inventor: TOKUTAKE TOSHINORI
IPC: F28F9/00
Filed: 1992-05-28
Granted: 2003-10-07
Abstract: A heat exchanger comprises a main body and at least one header-held members, with the main body having a plu-rality of heat exchanging tubes whose both ends are con-nected to headers in fluid communication with them, wherein the header-held members are selected from a group consisting of a bracket and an external pipe-connecting member which are attached to the header. The header-held members each comprise a header-surrounding portion which is fitted side-ways on and then brazed to the header while remaining self-retained on it, whereby the header-held member can be easily and rigidly secured to the header.
Patent CA-2075257-C (CA)
Title: Wireless telephone with frequency inversion scrambling
Inventor: WEISSHAPPEL ROBERT N
IPC: H04M1/725
Filed: 1992-08-04
Granted: 1998-01-20
Abstract: The wireless telephone of the present invention is comprised of a base unit, coupled to a land-line telephone system, and a remote unit that communicates with the base unit over radio frequencies. The remote unit has scrambling circuits (207 and 216) for encrypting voice signals transmitted to the base unit and decrypting voice signals received from the base unit. The base unit also has scrambling circuits (107 and 116) for encrypting voice signals transmitted the remote unit and decrypting voice signals received from the remote unit. The wireless telephone uses a keypad (222) for initiating a demonstration mode that allows both parties to the conversation to hear the scrambled voice signal.
Patent CA-2078298-C (CA)
Title: Automated portrait studio
Inventor: ADOLPHI JOHN
IPC: G03B/
Filed: 1992-09-15
Granted: 1999-04-27
Abstract: A portrait studio system for use by a photographer in automatically setting plurality of photographic parameters corresponding to distinct photographic poses of a subject, comprising data processing means including data storage means having information stored therein regarding the photographic parameters corresponding to the distinct photographic poses data input means operatively connected to the data processing means for inputting a selection of a desired pose or sequence of poses and data output means for communicating the photographic parameters corresponding to the pose or sequence of poses selected.
Patent CA-2081879-C (CA)
Title: Monoclonal antibodies to polyacrylate polymers
Inventor: WETEGROVE ROBERT L
IPC: G01N33/577
Filed: 1992-10-30
Granted: 2003-06-10
Abstract: The invention provides a monoclonal antibody having an affinity to polyacrylate. The monoclonal molecules of the invention are used in assays to determine the presence or concentration of active polyacrylate in a fluid.
Patent CA-2088183-C (CA)
Title: System for trimming continuously moving metal strip
Inventor: NOE OSKAR
IPC: B23D31/04
Filed: 1993-01-27
Granted: 1998-09-01
Abstract: A strip is displaced longitudinally with its edges parallel to a stationary machine centerline at a predetermined travel speed through a monitoring station and through a trimming station spaced downstream from the monitoring station and equipped with a pair of transversely offset trimming heads.  The transverse offset of the strip edges relative to the machine centerline is continuously monitored at the monitoring station and respective outputs corresponding to the transverse offsets between the respective edges and the machine centerline at the monitoring station are produced.  The time the strip takes to travel from the monitoring station to the trimming station is calculated based on the strip travel speed and the longitudinal spacing between the stations.  The trimming heads are transversely displaced in accordance with the calculated time and the respective transverse edge offset such that the heads remain in contact with the strip.  Continuous edge portions are thus cut from the strip with the heads.
Patent CA-2088384-C (CA)
Title: Defibrillator waveform generator for generating waveform of long duration
Inventor: SWANSON DAVID K
IPC: A61N1/39
Filed: 1993-01-29
Granted: 1998-09-01
Abstract: An implantabledefibrillator/cardioverter which generates a biphasic waveform having a duration of at least 15-80 msec and a small "tilt" between the leading edge and trailing edge voltages of each phase.   In one embodiment, two capacitors are connected in parallel to create an effectively large capacitance to generate a slowly  decaying  waveform.    In  another  embodiment,  a  high capacitance bipolar capacitor is used, which capacitance is at least 200 microFarads.
Patent CA-2092232-C (CA)
Title: Latent image receiving sheet
Inventor: MILLER ROBERT E
IPC: B41C1/055
Filed: 1993-03-23
Granted: 2003-12-09
Abstract: A novel latent image receiving sheet is disclosed comprising a substrate bearing microcapsules having walls of thermosetting resin. The walls of the microcapsules have an elongation less than 1 %, and the image receiving sheet or microcapsules are resistant to heat. Surprisingly, the latent image receiving sheet capsules nonetheless rupture upon application to the record material of a point source energy input or pulse comprising a .DELTA.T of at least 115°C per one millisecond.
Patent CA-2093998-C (CA)
Title: Remote sensor device for monitoring motor vehicle exhaust systems
Inventor: DIDOMENICO JOHN
IPC: G08G1/017
Filed: 1993-04-14
Granted: 1999-07-06
Abstract: Apparatus  for  detecting  and  measuring  relative concentrations of pollutants such as HC, CO and CO2 in the exhaust emissions from passing vehicles includes an infrared (IR) beam  source  for  directing  an  IR  beam  through  a  vehicle's exhaust plume and a detector disposed on one side of a roadway and a lateral transfer mirror (LTM) disposed on the other side of the roadway for  lateral reflecting of the IR beam back through the vehicle's exhaust plume and onto the detector.  The LTM allows for close spacing and precise alignment between the emitted and reflected beam paths and permits the IR beam source and detector to be disposed in a single module.   Compensation for  temperature  variation  in  the  temperature-sensitive  IR detectors  as  well  as  for  a  range  of  vehicle  operating conditions  is  provided  by  adjustable,  computer-controlled potentiometers,  while audio and/or visible light feedback of the detected IR signal allows a single operator to precisely align the optical components of the apparatus.  The IR detector module includes a rotating mirror arrangement for directing the reflected IR beam in a pulsed manner onto a plurality of spaced detector  elements,  each  adapted  for  detecting  a  specific pollutant,  with  the detector  elements  calibrated with  each detected IR pulse to reduce errors arising from circuit drift.
Patent CA-2099641-C (CA)
Inventor: SCHILL JOHN M
IPC: A63B21/015
Filed: 1993-06-24
Granted: 1996-10-01
Abstract: A portable exercise device for the wrists, hands and arms having an elongate shaft of generally circular cross section, a pair of handles connected to the shaft, at least one of the handles having a substantially axial bore in which the shaft is inserted.  Clamping means is provided for clamping said at least one of the handles to the shaft to permit relative circumferential movement about said shaft of said at least one of the handles, the movement being opposed by frictional force between the shaft and the bore of said at least one of the handles.
Patent CA-2115215-C (CA)
Inventor: MORRIS JAMES C
IPC: A61F5/01
Filed: 1994-02-08
Granted: 2004-12-14
Abstract: An ankle brace to be fitted about the lower leg and ankle of a wearer for inhibiting inversion and eversion of the ankle while accommodating plantar flexion and dorsiflexion is characterized by a rigidifying and unitizing external shell comprising a unitary member made of a rigid material and including a leg encircling portion at least substantially encircling the lower leg of the wearer and ankle stays extending downwardly from the leg encircling portion over the ankle and down to the heel on both the medial and lateral sides of the leg, the leg encircling portion accommodating flexing of the sides of the shell about a vertical axis intermediate the ankle stays for movement of the sides and the stays horizontally into supporting engagement with the medial and lateral sides of the leg and ankle, the shell preventing undesired movement of the ankle stays relative to one another. The ankle brace also features a metatarsal support extending from the region of the metatarsals over the lateral side and instep of the wearer's foot to the medial side of the shell, where the shell provides a rigid post for anchoring the metatarsal support.
Patent CA-2118262-C (CA)
Title: Process for feeding a second stream of pulverulent materials into a pneumatic conveying line carrying a first controllable flow of pulverulent materials
Inventor: SCHMIT LOUIS
IPC: B01F33/40
Filed: 1994-10-17
Granted: 2005-11-22
Abstract: The present invention relates to a process for feeding a second stream of pulverulent materials into a pneumatic conveying line carrying a first, controllable flow of pulverulent materials. The second stream of pulverulent materials is fed at a controlled rate and the control of the first flow is rendered insensitive to disturbances caused by the feeding of the second stream by directly or indirectly controlling the first flow upstream of the injection point of the second stream.
Patent CA-2118616-C (CA)
Title: Optical network based on remote interrogation of terminal equipment
Inventor: DARCIE THOMAS EDWARD
IPC: H04J14/02
Filed: 1994-03-09
Granted: 1999-09-14
Abstract: Optical Network Based on Remote Interrogation of Terminal Equipment Abstract A passive optical network architecture is disclosed for application in a local loop telephone environment. A local digital switch transmits an optical signal bearing information downstream over an optical fiber to the terminal equipment of a group of subscribers. This transmitted optical signal comprises light at a number of different wavelengths, i.e., it is a wavelength-division multiplexed signal, where each subscriber is associated with a particular wavelength of light. Each subscriber's terminal equipment detects that portion of the transmitted optical signal that exists at its assigned wavelength and thereby recovers the information sent by the local digital switch for that subscriber. However, a fraction of this detected optical signal is then remodulated by the subscriber's equipment with the subscriber's upstream information and returned to the local digital switch. As a result, no optical sources exist in the subscriber equipment in this optical network architecture.