baber/WOPTO huggingface dataset:
Patent CA-2001515-A1 (CA)
Title: Process for preparing optically active glycidate esters
Inventor: DODDS DAVID R
IPC: C12P41/00
Filed: 1989-10-25
Abstract: This invention relates to a method for the production of (2R,3S)-3-(4-methoxyphenyl)glycidic acids and esters thereof, which are synthetic intermediates for the production of the calcium antagonist diltiazem. The method involves the stereoselective enzymatic ester hydrolysis of racemic trans-3-(4-methoxyphenyl)glycidic acid ester to yield the resolved (2R,3S) compound as the ester. Membrane reactor methods and apparatus for the conduct of this enzymatic resolution process are also disclosed herein, as is the use of bisulfite anion in the aqueous reaction phase as a means of minimizing the inhibitory effect of an aldehyde reaction by-product on the reaction's progress. The benefits of selected solvent systems from which may be obtained highly resolved ester product are also disclosed. These enriched organic solutions may be used in subsequent transformations.      Alternatively, optically pure product may be obtained directly therefrom.
Patent CA-2004258-A1 (CA)
IPC: H04B7/212
Filed: 1989-11-30
Abstract: ABSTRACT OF THE DISCLOSURE   In a satellite communications system, a time slot assignment signal and a reference timing signal are transmitted from a central station to terminal stations to allow them to send bursts on assigned time slots and to establish the frame timing. In the central station, first and second self-resettable counters increment their respective binary counts at clock intervals and reset their counts to an initial value at time-slot intervals. A local timing signal is generated synchronously with the reference timing signal and delayed by an amount corresponding to a minimum round-trip propagation delay to reset the first counter. In an initial, wide aperture mode, the output of the first counter is used to generate control signals for recovering a carrier and clock and widely opening an aperture gate for detecting unique words of a burst that is affected by satellite drift. If a unique word is detected, the central station switches to a narrow aperture mode in which the output of the second counter is used instead to generate control signals for recovering the carrier and clock and narrowly opening the gate to reduce the possibility of detecting false unique words. In a preferred embodiment, the output of the second counter is stored in a memory in response to the detection of a unique word and an average value of the stored counts is derived to optimize the reset timing of the second counter.
Patent CA-2005658-A1 (CA)
Title: Insecticidal toxins, genes encoding these toxins, antibodies binding to them and transgenic plant cells and plants expressing these toxins
Inventor: ZLOTKIN ELIAHU
IPC: A01N63/50
Filed: 1989-12-15
Abstract: Case 5-17404/5/6/CGC 1388/9/0 Insecticidal toxins. genes encoding these toxins. antibodies binding to them and transgenic plant cells and plants expressing these toxins Abstract This invention relates to transgenic plants, plant cells and microorganisms which by use of recombinant DNA technology have been so transformed that they are capable of synthesizing insect selective toxins from venoms of venomous animals preferably members of the phylum Arthropoda, more preferably of members of the class Arachnida, most preferably of members of the order Scorpiones, and more preferably of members of the class Chilopoda. The invention further relates to genes encoding said insect selective toxins and the use of said genes to confer to plants a genetically mediated resistance to insects and to control phytopathogenic insects. The invention also relates to a toxin from the venom of the Scorpion Leiurus quinquestriatus hebraeus with the amino acid sequence   The invention further relates to antibodies for said toxins and insecticidally effective compositions comprising said toxins.
Patent CA-2006244-A1 (CA)
Inventor: MATINO HARUHIRO
IPC: G02F1/1335
Filed: 1989-12-20
Abstract: ABSTRACT      The disclosure describes the provision of a liquid crystal display device which permits of multi-gradation display merely he the application and non-application of a voltage to a liquid crystal without increasing an area of one display unit and without the necessity for fine adjustment of the voltage applied to the liquid crystal of each pixel.
Patent CA-2008752-A1 (CA)
Title: Method for gravel packing a well
Inventor: MARTIN JAMES W
IPC: C09K8/56
Filed: 1990-01-29
Abstract: PATENT     ABSTRACT OF THE INVENTION           A method of packing a well, particularly an oil, gas or water well comprises injecting a particle/liquid slurry into a wellbore wherein the particles comprise particles of at least two different densities independently selected from the density range of about 0.1 to about 4Ø          The at least two different density particles may be injected as blend of different density particles or in a sequential series of slugs, each slug having a single density particle suspended therein.  This technique gives substantially equivalent packing efficiency throughout the annulus, perforations and perforation chambers when compared with gravel packing using specialized low to medium density materials.
Patent CA-2008947-A1 (CA)
Title: Method for the transmission of data or commands and device for carrying out said method
Inventor: DEMARAIS GERARD
IPC: H04L1/00
Filed: 1990-01-30
Abstract: ABSTRACT            METHOD FOR THE TRANSMISSION OF DATA OR COMMANDS AND DEVICE FOR CARRYING OUT SAID METHOD          The method  for  the  transmission  of  data  or commands, in alternating duplex mode between a first port (2) connected to a first pair of transmission lines, and a second port (3) connected to a second pair of trans-mission lines, comprises: a step (A) of detection and processing of data at the input of either of the said ports, then designated as the input port, the other port being designated as the output port, followed by a step (B)  of blocking any transmission of possible signals coming from the output port towards the input port, a step (C) of transmission of the said data from the input port to the output port when data are detected at the input of the input port, and in the opposite case fol-lowed by a step (D) of blocking the transmission of all possible signals from the input port to the output port, leading to step (A) again.  The data presented to any of  the said ports are in the form of an amplitude modulation  of  an  alternating  carrier signal  having a  predetermined  carrier  frequency,  and  the  step (A)  of  detection  and  processing  comprises  a  step of  identification  of  the  predetermined  carrier frequency  and  a  step  of  extraction  of  a  useful signal representative of the said data to be trans-mitted.            (See Figure 1)
Patent CA-2009019-A1 (CA)
Title: Marine buoy
Inventor: JONES HARRY E
IPC: B63B51/02
Filed: 1990-01-31
Abstract: Abstract of the Disclosure A buoy (10) carries a light  (16) at the upper end of a (14).  The lower end of the mast (14) is connected to ?  ??ant body (12) which is weighted to present a maximum diameter zone  (20)  slightly below the water level when the buoy  (10)  is  at  rest  in the water.   The body  (12)  tapers inwardly both above and below the maximum diameter zone 20. A towing bar assembly (18)  is provided on one side of the buoy  (10). It  includes  an upwardly and ?twardly sloping guide  bar  (30)  connected  at its  upper  end  to  a  tow bar (36).   An  eye  (50)  at  an  end of  a  control  line  (46)  is slidably received on the guide bar (30).   An initial tug on the control line (46) causes the eye (50) to slide upwardly along the guide bar (30) until  it engages a bight  (38)  of the  tow bar  (36).   The  bight  (38) is  positioned  radially outwardly from the maximum diameter zone  (20).   Then,  when the  control  line  (46)  is  pulled  upon,  it  pulls  the  buoy (10)  into the water.   Initial water movement acting on the lower portion of  the buoy  (10)  raises  the buoy  (10)  from the water.  Then the buoy (10)  moves in the water sideways while remaining substantially upright.
Patent CA-2010428-A1 (CA)
Title: Process for removing hypochlorites in a chlorate solution
Inventor: PRALUS CHRISTIAN
IPC: C25B1/26
Filed: 1990-02-20
Abstract: Destruction of hypochlorites in a chlorate solution, without affecting the hexavalent chromium which is also present, using hydrogen peroxide.
Patent CA-2013415-A1 (CA)
Title: Suction drainage infection control system
Inventor: MIDDAUGH JAMES F
IPC: A61F5/451
Filed: 1990-03-29
Abstract: Abstract of the Disclosure A suction drainage control system that reduces an operator's exposure to infectious waste by permitting waste-treating material to be dispersed into a sealed chamber in which the infectious waste is contained.  The sealed chamber includes a cover with a flexible liner sealed to and suspended therefrom.  A reservoir having a closure is provided inside the sealed chamber for storing the waste-treating material, which reservoir is opened by manipulating the flexible liner to remove the closure.
Patent CA-2014293-A1 (CA)
Title: Efficiency monitoring antenna
Inventor: WELLS DONALD H
IPC: H01Q1/12
Filed: 1990-04-10
Abstract: ABSTRACT    An efficiency monitoring antenna which has a sampling pick-up loop and LED coupled to the lead-in and senses and indicates returning power flow. Tuning and impedance matching elements are also included which allow the antenna to be tuned and matched to the transmission line.
Patent CA-2014518-A1 (CA)
Title: Lipopolyamines, their preparation and their use
Inventor: BEHR JEAN-PAUL
IPC: C07C229/00
Filed: 1990-04-12
Abstract: Intermediate compounds useful for producing transfecting lipopolyamines, comprising:    <IMAGE>   wherein m is an integer between 2 and 6 inclusive, wherein n is an integer between 2 and 5 inclusive, wherein R5 represents a hydrogen atom or a carboxyl radical but no more than one R5 represents a carboxyl, the values of m in the different fragments (CH)m may be identical or different, and wherein the symbol Z R5 represent a group protecting the amine function.
Patent CA-2015452-A1 (CA)
Inventor: JUTRAS MARIO
IPC: E05C19/18
Filed: 1990-04-25
Abstract: BUTOIR DE PORTES-PATIO ET METHODE D'AJUSTEMENT DE CE BUTOIR AUX RAILS DES PORTES-PATIO PRECIS DE LA DIVULGATION Dispositif pour limiter le déplacement d'une porte coulissante de portes-patio. Le dispositif de butée comprend un boîtier rigide, formant généralement un U en coupe et installé librement sur une section du cadre de porte inoccupée par la porte coulissante. Une plaque d'ajustement à serre, contrainte par une tige-came traversant le boîtier, est mobile entre les deux pattes de U du boîtier, grâce un levier manuel faisant saillie hors du boîtier, de façon à pouvoir venir coincer à serre le rail passant entre cette plaque d'ajustement et une des pattes du U du boîtier. Des bandes de caoutchouc recouvrent cette dernière plaque et patte, pour s'ajuster à l'épaisseur du rail. Ainsi, en une première position limite de plaque mobile, le rail est saisi à serre entre la plaque mobile et la paroi de côté correspondante du butoir, alors qu'en l'autre position limite, le rail est dégagé. Le boîtier ainsi immobilisé sur le rail dans la première position limite de plaque mobile constituera ainsi une butée limitant le coulissement de la cloison au-delà du dispositif butoir.
Patent CA-2020998-A1 (CA)
Title: Fiber optic splice assembly
Inventor: BARLOW ROBERT W
IPC: G02B6/38
Filed: 1990-07-12
Abstract: ABSTRACT            A fiber optic splicing system for accommodating optical fibers having similar or distinctly different buffered coating sizes. The system comprises a first pair of housing halves forming a body with opposed ends adapted to receive two optical fiber of a first similar size; a second pair of housing halves forming a body with opposed ends adapted to receive two optical fibers of a second similar size, different from said first  size;  and a third  pair  of  housing  halves  forming  a body having one end formed to receive one of said first size of optical fiber and another  end  formed  to receive one of said second,  different size of optical fiber.  Holding means in the form of slidable end caps cooperate with the ends of the housing to apply radial compression thereto to maintain the fibers in position without the use of crimps or adhesives.  A center portion of the halves can be formed to accept elastic means for receiving fibers or, alternatively, a hollow sleeve which includes the elastic means therein.
Patent CA-2021255-A1 (CA)
Title: Substituted triazoles as angiotensin ii antagonists
Inventor: ASHTON WALLACE T
IPC: C07D403/10
Filed: 1990-07-16
Abstract: TITLE OF THE INVENTION SUBSTITUTED TRIAZOLES AS ANGIOTENSIN II ANTAGONISTS            ABSTRACT OF THE INVENTION Novel substituted triazoles of the formula (I), which are useful as angiotensin II antagonists, are disclosed.       (I)
Patent CA-2028131-A1 (CA)
Title: Antimicrobial fiber, resin, and method for production thereof
Inventor: NOWATARI HIROYOSHI
IPC: D06M11/83
Filed: 1990-03-07
Abstract: ABSTRACT     (1)  An antimicrobial fiber or resin of polyacrylonitrile or polyester containing 1 to 1,000 ppm, preferably 10 to 1,000 ppm, of silver in the form of silver sulfonate, (2)  a process for producing an antimicrobial fiber or resin of polyacrylonitrile or polyester, which comprises reacting a fiber or resin of polyacrylonitrile or polyester having sulfonic group and/or sulfonate group in the structure thereof with a water-soluble silver compound in water at a temperature not lower than the glass transition temperature of the polyacrylonitrile or the polyester, (3)  a process for producing an antimicrobial fiber or resin of polyacrylonitrile or polyester, which comprises reacting a fiber or resin of polyacrylonitrile or polyester having sulfonic group and/or sulfonate group in the structure thereof with a water-soluble silver compound in water at a temperature not lower than the glass transition temperature of the polyacrylonitrile or the polyester; and treating the thus reacted fiber or resin with a reducing agent, and (4)  an antimicrobial fiber or resin of polyacrylonitrile or polyester obtained by the method of (2) or (3).
Patent CA-2028925-A1 (CA)
Title: Substituted n-(imidazolyl)alkyl alanine derivatives
Inventor: GIRARD GERALD R
IPC: C07D233/90
Filed: 1990-10-30
Abstract: ABSTRACT OF THE DISCLOSURE       SUBSTITUTED N-(IMIDAZOLYL)ALKYL ALANINE DERIVATIVES            Angiotensin II receptor antagonists having the formula:                               which are useful in regulating hypertension and in the treatment of congestive heart failure, renal failure, and glaucoma, pharmaceutical compositions including these antagonists, and methods of using these compounds to produce angiotensin II receptor antagonism in mammals.
Patent CA-2029198-A1 (CA)
Title: Multiprocessor arbitration in single processor arbitration schemes
Inventor: JANSEN KENNETH A
IPC: G06F13/362
Filed: 1990-11-02
Abstract: ABSTRACT    A bus arbitration method for multiple processors that can be incorporated into an arbitration scheme that is designed to include only a single processor.  The method includes consolidating the individual bus requests of each processor into a single bus request supplied to the single processor arbitration scheme.  When control of the bus is allocated to the single processor,  the multiprocesor arbitration arbitrates among the processors who requested the bus.    The bus protocol used includes a least recently used method for granting bus access to the multiple processors coupled with a means for giving one processor priority over the others for access to the bus. The protocol also includes protection from interruption for the respective processor in control of the bus for a preset period of time.
Patent CA-2029609-A1 (CA)
Inventor: COZENS ERIC
IPC: F04C2/10
Filed: 1990-11-08
Abstract: ABSTRACT OF THE INVENTION     This invention relates to a porting system for a hydraulic device comprising a housing having a chamber communicating with an intake port and an exhaust port; a pair of rotary gears disposed internally of said chamber adjacent said ports and defining expanding and contracting pockets as said gears rotate over said intake and exhaust ports; said ports having a cross-sectional area in the direction perpendicular to the rotation which varies in relation to the rate of change of the expanding and contracting pockets.
Patent CA-2030255-A1 (CA)
IPC: A61M5/32
Filed: 1990-11-19
Abstract: A hypodermic syringe assembly (20) includes a barrel (21) having an open proximal end (22), a chamber (23) for retaining fluid and a tip portion (25) extending from a distal end (27) of the barrel (21) having a passageway (28) therethrough communicating with the chamber (23). A needle cannula (29) having a distal end (31) extends outwardly from the tip portion (25) and includes a lumen (33) in fluid communication with the passageway (28). A needle shield assembly (40) includes a resilient needle sheath (41) having an open proximal end (43), a closed distal end (44), a sidewall (45) defining a receptacle (46) therein and is positioned within an elongate rigid shield (51) having an open proximal end (52), a distal end (53) and a sidewall (55) therebetween. Structure for holding the sheath (41) within the shield (51) is provided so that the sheath (41) cannot be removed from the shield (51) during normal use of the syringe assembly (20). The sheath (41) includes cannula sealing means at the distal end of the receptacle (46). The needle shield assembly (40) is positioned with the distal end (31) of the cannula engaging the cannula sealing means and the proximal end (43) of the sheath (41) removably engaging the tip portion (25) to hold the needle shield assembly (40) on the barrel (21) while simultaneously sealing the lumen (33) of the cannula (29) so that the sheath (41) surrounds the entire portion of the cannula (29) which extends outwardly from the tip portion (25) of the barrel (21).
Patent CA-2030719-A1 (CA)
Title: Construction for supporting a flexible sheet
Inventor: PICK WILLIAM E
IPC: B03C3/45
Filed: 1990-11-23
Abstract: A construction for supporting a flexible sheet(56) is disclosed, which construction includes a U-shaped channel(34) having opposed flanges(40,42) that are adapted to receive a complementary spline member(50) for frictionally engaging a flexible sheet(56), such as window screen, between a surface of the spline member(50) and an adjacent inner surface of one flange of the U-shaped channel(34), The structure has several practical applicationons including the assembly of window screen frames, electrostatic air filters of the charged media type, frames for storm windows of plastic film, and the like.      An improved construction for an electrostatic air filter of the charged media type, which air filter is assembled using the construction for supporting a flexible sheet(56), is also disclosed.
Patent CA-2032143-A1 (CA)
Title: Laminates of metal and polyester film
Inventor: HEYES PETER J
IPC: B32B15/08
Filed: 1990-05-23
Abstract: LAMINATES OF METAL AND POLYESTER FILM ABSTRACT A laminate (10) of aluminium or aluminium alloy (3) sheet and an amorphous linear polyester according to formula (I), in which A is an integer, R1 is a divalent hydrocarbon group at least 60 mole % of which consists of p-phenylene groups, R2 is a divalent hydrocarbon group at least 60 mole % of which consists of -C2-H4- groups with A=1, having a molecular weight of at least 14,000 as measured by gel permeation chromatography. The laminate is suitable for deep drawing to form container bodies.
Patent CA-2038260-A1 (CA)
Title: Use of enzyme-labeled antibody fragment in determination of chlamydial or gonococcal antigens
Inventor: MAUCK JOHN C
IPC: G01N33/569
Filed: 1991-03-14
Abstract: USE OF ENZYME-LABELED ANTIBODY FRAGMENT IN DETERMINATION OF CHLAMYDIAL OR GONOCOCCAL ANTIGENS             Abstract of the Disclosure An enzyme-labeled F(ab')2 fragment is useful in the determination of Chlamydial or Gonococcal organisms or antigens thereof.  The fragment is used in place of labeled whole antibodies to form an immunological complex bound to a microporous membrane.  This complex is readily detected using appropriate dye-providing compositions composed of a substrate for the enzyme label.  The labeled antibody fragment can be provided as a buffered composition in a diagnostic test kit.
Patent CA-2040729-A1 (CA)
Inventor: BLADIMIRO MESTRE
IPC: G01F1/075
Filed: 1991-04-17
Abstract: PR?CIS DE DIVULGATION. Un appareil portatif d'assistance à l'éducation, la rééducation et l'entraînement des habiletés motrices humaines de déplacement dans l'eau, fournissant a son utilisateur des signaux auditifs et a un observateur des signaux visuels correspondant par leurs fréquences à la vitesse de déplacement de l'utilisateur dudit appareil. Ces signaux permettent à l'utilisateur d'être informé des variations que peut expérimenter sa vitesse de déplacement en fonction de la constance ou inconstance de l'application des forces propulsives exercées par ses membres. L'appareil peut s'ajuster a différentes vitesses de déplacement de l'usager pour localiser les différences éventuelles d'intensité des forces propulsives appliques par chacun des membres. L'appareil est constitué des composantes suivantes: un débitmètre, un capteur magnétique, un audio-oscillateur relié à un écouteur, une source d'énergie électrique et un circuit électrique relié à un voyant DEL. L'audio-oscillateur et le circuit électrique sont contenus dans un réceptacle imperméable. L'appareil est fixé au corps de l'utilisateur par une ceinture. Plus spécifiquement cet appareil permet à un nageur d'apprendre et de perfectionner l'équilibre, l'intensité et la continuité dans l'application des forces propulsives qui lui permettent de se déplacer dans l'eau. Cet appareil permet aussi l'apprentissage de l'application d'une accélération constante des forces propulsives pour conserver l'appui de ses membres dans l'eau. Il améliore le rythme d'application des forces propulsives et les mouvements préparatoires de recouvrement.
Patent CA-2041509-A1 (CA)
Title: Liquid flow control system
Inventor: SIMMEL THOMAS L
IPC: B65B39/04
Filed: 1991-04-30
Abstract: By employing two independent, separate and distinct flow paths which are controllably sequentially opened during use in a single actuation operation, an error-free, spill-free flame and explosion proof liquid delivery/filling system is achieved. In the preferred embodiment, both flow paths are normally maintained in a closed, sealed configura-tion, requiring an actuation force to controllably, sequentially open the flow paths. In addition, by providing a cooperating, mating liquid transfer assembly, the container on which the liquid delivery/filling system is mounted can be refilled with safety and ease, completely eliminating spillage of the liquid. In this way, a fully integrated, cooperating, liquid flow controlling system is realized.
Patent CA-2043755-A1 (CA)
Title: Camouflage net
Inventor: HELLWIG MANFRED
IPC: F41H3/02
Filed: 1991-06-03
Abstract: A camouflage net made from a flame-retardant material comprises a support material (1) of polyester fibres in a perforated structure, which is provided with a coating of a flame-retardant polymer, which in turn is coated with infrared camouflage paint (6). The support material (1) is a knitted fabric of polyester fibres into which metal fibres (3) are inserted.
Patent CA-2046916-A1 (CA)
Title: Methods and compositions for treatment of cancer using oligonucleotides
Inventor: SMITH LARRY J
IPC: A61P35/00
Filed: 1990-01-24
Abstract: The present invention provides methods useful in autologous bone marrow transplantation and cancer therapy. According to one aspect of the invention, bone marrow cells from a patient having cancer are treated with selected antisense oligonucleotides in order to deplete the bone marrow of malignant cells prior to infusion back into the bone marrow donor. In a separate embodiment, selected antisense oligonucleotides are administered systemically for anticancer therapy.