baber/WOPTO huggingface dataset:
Patent AU-747096-C (AU)
Title: Crystal of diuridine tetraphosphate or salt thereof and method for preparing the same, and method for producing said compound
Inventor: MAEDA HIDEAKI
IPC: C07H19/10
Filed: 1999-10-01
Granted: 2003-01-23
Abstract: The invention provides crystals of P<1>,P<4>-di(uridine 5'-)tetraphosphate or a salt thereof; a process for producing the crystals; and a process for producing P<1>,P<4>-di(uridine 5'-)tetraphosphate (U2P4) or a salt thereof from UMP serving as a starting material and by use of DPC and PPi, which process comprises at least one of the following treatment steps: (a) adding UMP diphenylphosphate (UMP-DPP) in divided portions during a step of reaction of UMP-DPP with a PPi-organic alkali salt; (b) carrying out reaction of UMP-DPP with a PPi-organic alkali salt in the presence of a base; and (c) further treating the synthesized U2P4 with an alkali. The crystals of U2P4 or a salt thereof obtained through the process according to the invention have high purity and stability and a less hygroscopicity as compared with a lyophilized product, to thereby serve as a useful raw material for preparing a pharmaceutical. The process for producing U2P4 or a salt thereof according to the invention realizes high yield and enables large-scale synthesis.
Patent CA-2010830-C (CA)
Title: Dynamic codebook for efficient speech coding based on algebraic codes
Inventor: ADOUL JEAN-PIERRE
IPC: G10L19/12
Filed: 1990-02-23
Granted: 1996-06-25
Abstract: A method of encoding a speech signal is disclosed.    This  method  improves  the  excitation codebook and search procedure of the conventional Code Excited Linear Prediction (CELP) speech encoders.  Use is made of a dynamic codebook based on a combination of two modules:  a sparse algebraic code generator associated to a filter having a transfer function varying  in time. The generator  is  a  structured codebook with codewords having very few non  zero components.     The  filter  shapes  the  spectral characteristics  whereby the  resulting  excitation codebook exhibits  favorable perceptual  properties. The search complexity in finding the best codeword is greatly reduced by bringing the search back to the algebraic code domain thereby allowing the sparcity of the  algebraic  code  to  speed  up  the  necessary computations.
Patent CA-2015404-C (CA)
Title: Packet cross connect switch system including improved throughput
Inventor: DIGHE RAJIV S
IPC: H04L12/56
Filed: 1990-04-25
Granted: 1993-10-12
Abstract: PACKET CROSS CONNECT SWITCH SYSTEM    INCLUDING IMPROVED THROUGHPUT Abstract Improved throughput is realized in a packet cross connect switch by including an addressable memory unit in each of a plurality of input ports for storing packets and by allowing each of a plurality of output ports to address directly any one of the input ports to obtain a particular packet stored therein, which is destined for the output port. To this end, the input ports supply the packet destination and starting address of the packet stored in their memory to a scheduler. The scheduler controllably selects an output port assigned to the packet destination and supplies packet output information to the selected output port including the packet starting and the identity of the input port storing the packet. When a particular output port is ready to obtain a particular packet, it addresses the memory unit in the particular input port to read the first packet word. The addressed packet word is supplied via a data bus to the requesting output port. Thereafter, the packet address is incremented by one packet word at a time and the corresponding packet words are read out of the input port memory units until the entire packet has been supplied to the requesting output port. (FIG. 7).
Patent CA-2016288-C (CA)
Inventor: JOHNSON MALCOLM L
IPC: D04H1/56
Filed: 1990-05-08
Granted: 2000-01-18
Abstract: There is disclosed a nonwoven wiper comprising a composite web made of a number of interbonded layers of meltblown thermoplastic fibers. The outer layers have average pore sizes greater than 20 microns and preferably greater than 40 microns for rapid pick up of liquid. The internal layers have average pore sizes between 10-20 microns for liquid holding capacity.
Patent CA-2018751-C (CA)
Inventor: HAEGER BRUCE E
IPC: C07D487/22
Filed: 1990-06-12
Granted: 2001-08-21
Abstract: Stable freeze dried compositions of tumor -selective porphyrin compounds useful in photodynamic therapy and methods for preparing the same.
Patent CA-2023382-C (CA)
Inventor: LEUNG ROGER Y
IPC: D04H1/58
Filed: 1990-08-16
Granted: 2003-01-14
Abstract: An improved fiber reinforced glass composite includes refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.1 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
Patent CA-2029672-C (CA)
Title: Bag with auxiliary pocket and viewing window
Inventor: COHEN ALDEN M
IPC: B65D33/04
Filed: 1990-11-09
Granted: 1998-01-20
Abstract: There is disclosed herein a bag which is constructed to form a primary loading compartment and an auxiliary load-carrying or promotional-item-carrying pocket.  The bag includes front, back, side and bottom panels and a compartment forming partition panel.  The partition panel is secured to the front panel so as to define primary and auxiliary load-carrying compartments.  The auxiliary compartment is formed by the front panel and partition panel.  The front panel may be apertured and overlaid with a transparent film so as to form a window. The partition is adhered to the front panel so as to form a pocket in which the contents are positioned for viewing through the window.
Patent CA-2029837-C (CA)
Title: Buffer system for the temporary storage of flat objects such as letters, and buffer for use in said buffer system
Inventor: BEERMAN JOHANNES H M
IPC: G06V30/10
Filed: 1990-11-13
Granted: 1993-10-19
Abstract: ABSTRACT OF THE DISCLOSURE    The invention comprises a buffer system and a buffer (20) applied in it. The buffer acts as mechanical RAM and contains a number of storage pockets (28) for the temporary separate storage of flat articles such as letters for postal processing purposes such as, for example, sorting and video coding. Electromechanically the buffer is such that the letters are not released at any point and are subject to shifting as little as possible, and permit a dense packing of the pockets. This is achieved by using a slide/entrainment conveyance system which is formed by elastic clamping between an endless conveyor (54, 72, 77) with a very high coefficient of friction, for example one or more elastic cords running in parallel and a sliding surface (60, 73, 75) having a very low coefficient of friction both in the sections (21 and 22) of conveyance past the pockets and in the pockets (28). In the pockets, said sliding/entrainment conveyance system is constructed as a separately controllable letter catchment, retainment and ejection device. Each two successive buffer pockets have a partition in common provided with the endless conveyor (54) of one of the said two pockets and the sliding surface (60) of the other of the said two pockets. The buffer system comprises a number of such buffers (20) with or without distributed control. The buffers (20) are situated along a branching feed section (1, 23) in which a gate (25, 26) is sited at every buffer branching point and every connecting point. First process signal connections (6) via which so-called letter logging signals (BBS) are concomitantly transmitted for every letter conveyed along the feed section (1, 23) run in parallel with the branched feed section. Appended to each of said gates (25, 26) is a gate control (91, 38) which determines on the basis of the letter logging signals (BBS) and, for example, the number of free pockets (#-VAKKEN) in each of two gate directions in which direction the letter with its associated letter logging  signals (BBS) is sent.  Said letter logging signals comprise in all cases a letter identification code (BIC) assigned to the letter by an application control (5) when the letter is fed into the system.  The application control continuously makes a selection of letters, which are eligible for discharge from the system, from the instantaneously stored letters on the basis of certain letter features which are derived from the letters to be fed in at the system entrance.  Data of the selected letters, including time indications (TI) of when the letters have to pass a defined ejection point (X) in the system exit are transmitted via second process signal connection (9) to the control (38) of each of the buffers (20).  Such a buffer system can readily be equipped either as a sorting system or as a video coding system. (Figure 3).
Patent CA-2031608-C (CA)
Title: Microwave induced catalytic conversion of methane and a hydrating agent to c _oxygenates
Inventor: WAN JEFFREY K S
IPC: C07C29/36
Filed: 1990-12-05
Granted: 1995-06-27
Abstract: A  process  is  provided  for  selectively  converting methane  and  a  hydrating  agent  to  C3 oxygenates.    More particularly, methane is reacted with water in the presence of a nickel metal powder catalyst using microwave irradiation to produce acetone and propanol.
Patent CA-2039417-C (CA)
Title: Molded hybrid ic package and lead frame therefore
Inventor: BISWAS RANJIT
IPC: H01L25/16
Filed: 1991-03-28
Granted: 1995-12-05
Abstract: The present invention is a molded Hybrid Integrated Circuit package in which a carrier substrate with a various circuit elements including an integrated circuit is supported within a resilient craddle formed by down-set and compliant portions of leads arranged in a quad configuration around the periphery of the carrier substrate, with ends of the down-set portions being secured to pads arranged on the periphery of the carrier substrate. Prior to the assembly with carrier substrate and molding of the resultant subassembly, the leads form a part of a lead frame including elongated bar and dam-bar on each of the quad sides interconnecting end and central portions, respectively, of the leads, and an interconnecting array of connecting links andbridges at the ends of the dam-bars. The lead-frame design, including the down-set and resilient portions of the leads, provides for the stress relief between the carrier substrate and the lead frame, especially during the thermo-bond lead attachment and molding of an encapsulating resin around the carrier substrate and leads subassembly.
Patent CA-2040012-C (CA)
Title: Mine equipped with a positioning device
Inventor: GROSCH HERMANN
IPC: F42B23/24
Filed: 1991-04-08
Granted: 1995-01-17
Abstract: ABSTRACT OF THE DISCLOSURE    An arrangement for positioning a mine includes a mine housing and an inflatable, balloon mounted on a lateral exterior side of the mine housing.  A gas generator is disposed in the mine housing and connected to the balloon for providing a supply of gas for inflating the balloon. position sensor is disposed in the mine housing for monitor-ing the upright position of the mine housing and connected to the gas generator for controlling the supply of gas to the balloon in dependence of the upright position of the mine.  A plurality of fixing nails are mounted in the bottom of the mine housing for fixing the position of the mine housing on the ground.
Patent CA-2040354-C (CA)
Title: Amplitude modulator having negative feedback circuit for reducing distortion
Inventor: SEVENHANS JOANNES MATHILDA JOS
IPC: H03C1/54
Filed: 1991-04-12
Granted: 1993-07-20
Abstract: ABSTRACT        Modulator circuit (MOD) with a modulator proper and a correction signal generator.  The modulator proper comprises the cascade connection of an amplifier (T11, T21, CS11, T12, T22, CS12) and a first switching circuit (R11, T31, T51, R12, T32. T52). whilst the generator comprises the cascade connection of the same amplifier and a second switching circuit (R21, T61. T42, R22, T62. T41) having a correction output (P11, P12) coupled to a feedback input (P21, P22) of the amplifier via a feedback circuit (T71. R31, CS21, T72. R32. CS22).  The amplifier and the switching circuits are controlled by a modulating signal and a carrier signal respectively and the first and second switching circuits provide a modulated output signal and a correction signal substantially equal to the envelope of the modulated output signal and used to decrease the modulator distortion.
Patent CA-2040774-C (CA)
Title: Compounds formed from o-hydroxyphenyl-1,3,5-triazines and sterically hindered amines
Inventor: SLONGO MARIO
IPC: C08K5/3492
Filed: 1991-04-18
Granted: 2001-07-31
Abstract: Compounds which comprise at least one group of the formula I or II   (see formula I or II) and at least one polyalkylpiperidine group of the formula III       (III), in which R and R1 to R6 have the meaning indicated in claim 1, are effective stabilisers for organic materials against damage by light, oxygen and heat.
Patent CA-2040879-C (CA)
Title: Antenna beam pointing method for satellite mobile communications system
Inventor: SHIMIZU RYUJI
IPC: H01Q3/26
Filed: 1991-04-19
Granted: 1995-08-29
Abstract: A method for tracking a satellite in a land mobile satellite communications system is disclosed.  A rate gyro is provided for use in the event that an automatic satellite tracking is prevented.  The satellite is automatically tracked using a receive signal level if the receive signal level equals or exceeds a threshold. An output of the rate gyro is constantly compensated while automatically tracking the satellite.  When the receive signal level falls below the threshold and the automatic satellite tracking becomes unable, the satellite is tracked using the compensated output of the rate gyro.
Patent CA-2041026-C (CA)
Title: Exit device having adjustable concealed rods
Inventor: HUNT LARRY R
IPC: E05C9/20
Filed: 1991-04-23
Granted: 1996-10-01
Abstract: Vertical concealed rods are attached to the respective ends of the slider of an exit device by adjustment bolts and bracket assemblies.  Each bracket assembly is held adjacent the head of its adjustment bolt by a retainer.  Once the cover of the latch mechanism is removed, the bolts are readily accessible from the outside of the door.
Patent CA-2042649-C (CA)
Inventor: ORBAN JACQUES
IPC: G01N29/024
Filed: 1991-05-15
Granted: 1994-11-29
Abstract: Pulse echo apparatus and methods are disclosed for measuring characteristics of a borehole while it is being drilled.  A component of a bottomhole assembly, preferably a drilling collar , is provided with one or more ultra-sonic transceivers.  A pulse echo sensor of the transceiver is preferably placed in a stabilizer fin of the collar, but may also be placed in the wall of the collar, preferably close to a stabilizing fin.  Electronic processing and control circuitry for the pulse-echo sensor is provided in an electronic module placed within such collar.  Such pulse echo apparatus, which preferably includes two diametrically opposed transceivers, generates signals from which standoff from a borehole wall may be determined.  A method and apparatus are provided for measuring standoff and borehole diameter in the presence of drilling cuttings entrained in the drilling fluid. In a preferred embodiment, such signals are assessed by the electronic processing and control circuitry to determine if gas has entered borehole.  Three methods and apparatus are provided for such gas entry determination.  The first relies on measurement of sonic impedance of the drilling fluid by assessing the amplitude of an echo from an interface between the drilling fluid and a delay-line placed outwardly of a ceramic sensor.  The second relies on measurement of drilling fluid attenuation of a borehole wall echo.  The third relies on measurement of the phase of oscillations of echoes to identify large gas bubble entries. The pulse-echo sensor includes a sensor stack including a backing element, a piezo-electric ceramic disk, and a delay-line.
Patent CA-2042997-C (CA)
Inventor: CHARBONNEAU PIERRE
IPC: A61L9/16
Filed: 1991-05-22
Granted: 1994-03-29
Abstract: Les systèmes d'air comprimé tels que ceux utilisés dans les cabinets dentaires et les hôpitaux produisent une condensation d'humidité dans le réservoir du complesseur, à cause des variations de pression inhérentes aux départs et arrêtssuccessifs de ce dernier. Cette eau ainsi accumulée dans le réservoir devient unincubateur naturel pour l'infection. De plus, la qualité de l'air à son point d'utilisation (soit dans la bouche du patient) est tributaire de l'atmosphère ambiante où se trouve la prise d'air du complesseur et il n'existe préæntement aucun moyen de contrer cette contamination. La présente invention est un autoclave dynamique à sec qui, par infra-rouge, chauffe l'air comprimé à 200 degrés C, sous une pression de 100 à 150lbs/po2, en le faisant circuler à haute vélocité dans un serpentin de cuivre.Ces actions combinées (température, pression) assurent aux utilisateurs un air comprimé aseptique et un système prévenant toute prolifération bactérienne à l'ensemble du réseau.
Patent CA-2045108-C (CA)
Title: Method and apparatus for manufacturing continuous fiber glass strand reinforcing mat
Inventor: REESE WALTER J
IPC: C03C25/10
Filed: 1991-06-20
Granted: 1997-07-22
Abstract: The subject matter of this invention relates to a method and apparatus for making mats of continuous glass fiber strands in which a heated calendering roll and continuous belt are used to compact the mat, expel excess moisture, melt, and/or cure resin previously distributed throughout the glass strand.  The resin may be deposited in the mat in the form of a powdered resin or as a continuous thread of material that is combined with the remaining strands that form the mat as the glass strands are projected onto the surface of a moving conveyor to form the mat.
Patent CA-2050671-C (CA)
Title: Simplified dual visor operating mechanism
Inventor: HEDGES GEORGE D
IPC: A42B3/22
Filed: 1991-09-04
Granted: 1996-01-16
Abstract: A dual visor and helmet assembly in which inner and outer visors mounted on arbors secured to opposite sides of the helmet for movement between operative and inoperative positions are clamped respectively to one and to the other of the  arbors  by  pre-loaded C-rings  coupled  to  the  visors.          Respective manually actuatable operating rings on the visors may be actuated to release the clamping forces of the C-rings and  to  move  the  visors  between  their  operative  and inoperative positions.
Patent CA-2051397-C (CA)
Title: Oxidative preparation of 3,5-secoandrost-5-one-3,17.beta.-dioic acid
Inventor: HERRINTON PAUL MATTHEW
IPC: C07D303/32
Filed: 1990-05-15
Granted: 1997-12-09
Abstract: The present invention is an oxidative process for the conversion of 21-unsaturated progesterones (I) to the corresponding 3,5-secoandrost-5-one-3,17.beta.-dioic acids (II) by use or either ozone or an oxidizing agent, which are useful intermediates in the production of .DELTA.5-4-aza-17-carbonyl steroids (III) which are useful in production of 5.alpha.-4-aza amide (IV) pharmaceuticals. Also disclosed are the novel 21-unsaturated progesterones (I-C) and 3,5-secoandrost-5-one-3,17-.beta.dioic acids (II-C).
Patent CA-2052798-C (CA)
Title: Phenolic resins
Inventor: LANCASTER MICHAEL
IPC: C07C39/15
Filed: 1991-10-04
Granted: 2001-08-21
Abstract: This invention relates to a process for producing low molecular weight phenol-aldehyde resin which has predominantly 4 phenolic units in a chain and in which the phenolic ring has a substituent R which is an alkyl group and optionally contains methylol groups on either end of the chain, by reacting formaldehyde with p-alkyl phenol in the presence of ammonia as base in a liquid reaction medium. The resins can be used in producing demulsifiers.
Patent CA-2058427-C (CA)
Title: Butterfly valve apparatus and method
Inventor: BALL LARRY K
IPC: F16K15/03
Filed: 1990-06-05
Granted: 2001-05-15
Abstract: A butterfly valve (10) includes a duct (12) defining a fluid flow path (16) and a plate-like valve member (20) pivotal in the duct to in one position close the latter. The valve member (20) is pivotal to a second position spanning the duct and extending parallel to the flow path to allow fluid flow therein. Means (30, 82) are provided for altering the effective area distribution of the valve member (20) about its pivot axis (28) in order to effect pivotal movement of the valve member in response to fluid dynamic flow forces. An actuator (30) carried upon the valve member cooperates with the duct (12) to forcefully effect initial opening and final closing movements of the valve member.
Patent CA-2059386-C (CA)
Title: Socket and header electrical connector assembly
Inventor: SADIGH-BEHZADI AMIR-AKBAR
IPC: H01R12/70
Filed: 1992-01-15
Granted: 1995-06-27
Abstract: A connector assembly for electrically connecting an  electronic  apparatus  to  a  printed  circuit  board includes a matable socket connector and header connector. The  socket connector  includes  a  lower  housing which supports the electronic apparatus and which is capable of containing an insulative curable potting compound.   A plurality of electrical contacts is supported by the lower housing  in electrical engagement with the electronic apparatus.  A cover is supportable over the lower housing for enclosing the housing.  The electronic apparatus is supported within the socket connector in position so that the curable potting compound may completely surround the electronic apparatus providing an environmental seal. The socket connector is insertable into the header connector supported on the printed circuit to establish electrical connection therebetween.
Patent CA-2078303-C (CA)
Title: Voltage regulator
Inventor: LOU PERRY W
IPC: G05F1/46
Filed: 1992-09-15
Granted: 1999-12-07
Abstract: A system for regulating an output voltage to a particular value includes a control transistor which produces an output voltage when energized by an energizing voltage. A voltage divider formed as by a pair of transistors with a particular ratio of transconductances divides the magnitude of this output voltage by a ratio related to the ratio of the transconductances. The transistors in the voltage divider may be respectively CMOS n- and p- transistors. The divided output voltage is introduced to a comparator (formed as from a pair of transistors) for comparison with a fixed reference voltage obtained as from a resistance ladder energized by the energizing voltage. The comparator introduces voltages to a comparator amplifier in accordance with such comparison. The comparator amplifier may include a transistor which produces changes in a current related to changes in the divided output voltage. The comparator amplifier may further include a current mirror which provides changes in a current related to changes in the current through the amplifier transistor. The current changes in the current mirror cause changes to be produced in a voltage (e.g. error voltage) from the current mirror. These error voltage changes are introduced to the control transistor to regulate the output voltage to the particular value.
Patent CA-2088262-C (CA)
Title: Amide diol extended cathodic electrodeposition resins
Inventor: CHUNG DING Y
IPC: C09D5/44
Filed: 1991-08-01
Granted: 2002-04-09
Abstract: An improved electrodepositable cationic resin is disclosed. Prior art electrodepositable cationic resins are formed from po-lyepoxides which are chain extended with polyether or polyester polyols to internally flexibilize the resin. Our polyepoxide resin is chain extended with amide diol which gives a resin which is hydrolytically stable and does not tend to absorb moisture.