baber/WOPTO huggingface dataset:
Patent CA-2034111-A1 (CA)
Title: Absorbent fibrous structure
Inventor: ANAPOL SHERYL J
IPC: D04H1/067
Filed: 1991-01-14
Abstract: A fibrous structure comprising a batt of a loose assemblage of fibers, having an initial density, that is embossed to produce a batt having a discrete pattern of hydrogen-bonded, compressed or densified portions and regions between the compressed portions.      The regions have an average density greater than the average initial density of the batt and less than the density of the batt and less than the density of the compressed portions so as to form discrete density gradients across the surface of the batt. The batt has an initial average density of from about 0.03 g/cm3 to about 0.15 g/cm3. The compressed portions have an average density in the range of from about 0.40 g/cm3 to about 1.00 g/cm3 and have a size in the range of from about 0.0002 cm2 to about 0.12 cm2. The regions defined between the compressed portions occupy from about 97 percent to about 99.5 percent of the area of the surface of the batt. The compressed portions may be formed by embossing rolls or by application of ultrasonic energy.
Patent CA-2036137-A1 (CA)
Title: Compound fiber-optic gyroscope using frequency discrimination
Inventor: DYOTT RICHARD B
IPC: G01C19/72
Filed: 1991-02-12
Abstract: ABSTRACT A compound high rate/low rate fiber-optic gyroscope comprising first and second optical fiber coils; an optical signal source operating at a known frequency for supplying an optical signal to the optical fiber coils; first and second couplers for coupling the optical signal from the source to both ends of each of the first and second coils so that the signal is propagated in opposite directions around each of the coils, the first and second coils being different so that the phase differences between the counter-propagating signals in the respective coils vary linearly with the rate of rotation of the coils in different rotation rate ranges in the two different coils; first and second modulators coupled respectively to the first and second coils and operating at different modulation frequencies for modulating the counter propagating signals in each of the coils; a frequency-discriminating circuit for receiving the optical signals from both ends of both of the coils and producing first and second output signals representing the phase differences between the counter-propagating signals in the respective coils; and a third coupler between the source and the discriminating circuit for coupling the signals from the source to the first and second couplers, and for coupling the signals from the first and second couplers to the discriminating circuit.
Patent CA-2037217-A1 (CA)
Inventor: IVORY DOUGLAS W
IPC: B60G3/06
Filed: 1991-02-27
Abstract: P/2172 (PCT-P/2347) Ford/GB-651 04.11.90 ABSTRACT                       A Suspension Arrangement In a McPherson strut suspension, the top end of the strut 26 is not positively secured against axial movement in its seat 28 but is prevented from moving from its seat on full extension by abutment of a bracket 44 fixed to the strut with a stop 46 fixed to the chassis.                      Figure 2
Patent CA-2040807-A1 (CA)
Title: Data terminal for communicating over a telephone circuit
Inventor: BUTLER MYRON C
IPC: H04M3/30
Filed: 1991-04-19
Abstract: PATENT         Abstract of the Disclosure A data terminal which enables a craft technician to com-municate  through  a  gateway processor  to  other  computers includes a program language support library and an operating system  which  can  receive  a  condensed  form  applications program and  supplement the received program to create a fully executable applications program.   This permits con-venient downloading into the terminal over a conventional telephone circuit.  Also disclosed is an improved interface through which a telephone circuit can be tested to determine if it is active and idle in a substantially non-invasive manner.  Respective computer protocols can be entered in the terminal in association with telephone numbers of respective computers for automatic use whenever the respective computer is  called.   A limited  display  area  of  the terminal  is controlled so that a larger page of text can be sequentially displayed  through it  as  if the limited display  area  is scanning across the larger page of text.
Patent CA-2042398-A1 (CA)
Inventor: KAPPAS ATTALLAH
IPC: A61K31/555
Filed: 1990-09-24
Abstract: Orally administered metalloporphyrins are useful to inhibit absorption of iron in animals.
Patent CA-2048800-A1 (CA)
Title: Windage shield
Inventor: RAMACHANDRAN JAIRAJ
IPC: F01D25/12
Filed: 1991-08-08
Abstract: A windage shield for use with a pair of annular members oriented in an abutting end-to-end arrangement to define one boundary of a fluid flow path, each of the members having a radially extending flange at their respecting abutting ends for coupling the members to each other. The flanges are coupled by a plurality of circumferentially spaced bolts having a head and a nut which protrude into the fluid flow path. The windage shield comprises an annular ring having a first surface with a plurality of circumferentially spaced arcuate grooves formed therein. Each of the grooves is shaped to receive a preselected number of the bolt heads when the ring is positioned against a corresponding flange. A second surface of the ring opposite the first surface includes a plurality of apertures extending through the ring to the first surface with each of the apertures being located between a respective adjacent pair of the arcuate grooves. Each aperture has a countersunk portion on the second surface. The shield is attached to the flange by passing at least some of the bolts through the apertures with the bolt heads recessed in the countersunk portion such that a top of the bolts is flush with the second surface. The other bolt heads are contained within the arcuate grooves on the first surface of the ring.
Patent CA-2050594-A1 (CA)
Inventor: VASSOEY BJOERN
IPC: C04B28/00
Filed: 1990-04-09
Abstract: The invention relates to a procedure for the admixture of silicon oxide to a hydraulic cement slurry, particularly for well cementing, and is characterized by amorphus silica with particles smaller than 1 micro-metre being mixed with water to a liquid micro-silica, silica flour with particles from 2 to 200 micro-metres being mixed in said liquid micro-silica and the thereby obtained silica mixture being added to cement slurry directly in a mixing tank. In addition the invention relates to a hydraulic cement slurry produced according to the procedure.
Patent CA-2052367-A1 (CA)
Inventor: PICHAT PHILIPPE
IPC: C02F1/52
Filed: 1991-09-30
Abstract: Prétraitement des déchets et résidus contenant des ions sodium et potassium. L'invention concerne un procédé permettant d'abaisser la teneur ou d'éliminer les ions sodium et potassium dans les déchets et résidus. Selon le procédé, on traite ces déchets par le résidu, riche en acide fluorosilicique et considéré lui-même comme un déchet polluant, issu de la fabrication d'acide phosphorique par action d'acide sulfurique sur un minerai calcique à base de phosphate de calcium.
Patent CA-2055143-A1 (CA)
Title: Number card game and method
Inventor: SANDEEN LOWELL
IPC: A63F3/02
Filed: 1991-11-07
Abstract: A game card device. The card includes a matrix having numerical indicia and blanks imprinted thereon. The matrix has a generally closed perimeter enclosing interconnected two and three-line peripheral and three-line internal interstices. Numbers and blanks are randomly disposed between lines forming said interstices.
Patent CA-2055910-A1 (CA)
IPC: B23K35/26
Filed: 1991-11-20
Abstract: A fluxless solder for application to metal surfaces which include contaminants such as metal oxides.  The fluxless solder includes a reducing agent which reacts with interfering metal oxides to form essentially inert compounds which require no further cleaning.  Reducing agents, such as lithium, calcium, strontium and cesium are disclosed for use in lead-tin solders, in amounts ranging from about 0.5 to 10 atom percent.   Various methods  for  forming  the  fluxless  solder  are  also disclosed.
Patent CA-2060600-A1 (CA)
Title: Valve for ink-jet pen
Inventor: WINSLOW THOMAS H
IPC: B41J2/175
Filed: 1992-02-04
Abstract: VALVE FOR INK-JET PEN                   ABSTRACT OF THE DISCLOSURE        An ink-jet pen (22) for storing at below-ambient pressure has an orifice (54) formed therein for providing air bubbles to prevent the back pressure from rising above a level that would cause malfunction of the pen (22).  The amount of air drawn into the reservoir (24) is restricted by the reservoir ink (31) that covers the orifice (54) whenever the pen (22) is in an upright position.  The valve (20) operates to occlude the orifice (54) whenever the pen (22) is moved into a position, such as inverted, where the reservoir ink no longer covers the orifice (54).          The occlusion of the orifice prevents the unrestricted flow of ambient air into the reservoir (24) that would otherwise eliminate the required back pressure in the reservoir (24).  The valve includes a sealing liquid (68) selected so that the liquid occludes a passage (60) between the orifice and ambient air without flowing through that passage (60).
Patent CA-2060643-A1 (CA)
Inventor: PUCCI ANNICK
IPC: C07C41/42
Filed: 1992-01-30
Abstract: On décrit un procédé de séparation de l'éthyl tertiobutyl éther à partir de mélanges qu'il forme avec l'éthanol. Ce procédé comprend deux étapes de distillation, la première étant effectuée à une pression p1 supérieure ou égale à 1 bar, la seconde à une pression p2 inférieure à p1 d'une valeur .DELTA.p de 0,5 à 12 bars, p2 étant alors de 0,5 à 10 bars. Le distillat de deuxième colonne est en partie renvoyé comme reflux en tête de deuxième colonne et en partie recyclé vers la tête de première colonne. L'ETBE purifié est recueillien fond de première colonne et l'éthanol purifié, en fond de deuxième colonne. Ce procédé de séparation peut être intégré à une unité de production d'ETBE comprenant l'éthérification par l'éthanol d'une coupe C4 de vapocraquage ou de craquage catalytique. L'éthanol séparé est alors recyclé vers la zone d'éthérification.
Patent CA-2060770-A1 (CA)
Inventor: BENOIT MARC
IPC: C07C255/39
Filed: 1992-02-06
Abstract: The subject of the invention is, in all the possible stereoisomeric forms as well as their mixtures, the compounds corresponding to the general formula (I): <IMAGE>  in which:   Z represents a hydrogen atom, a CH3 radical, a C IDENTICAL N radical or a C IDENTICAL CH radical, and R represents a substituted phenyl radical chosen from the group consisting of the radicals: <IMAGE>   The compounds of the invention have advantageous pesticidal properties.
Patent CA-2062710-A1 (CA)
Inventor: SHIGA NOBUO
IPC: H01F17/00
Filed: 1992-03-11
Abstract: A passive transformer which can be formed in an MMIC having a plurality of first-layer wirings formed on a substrate so that each of the first-layer wirings intersects a desired virtual line on the substrate; an insulating film for covering a substrate surface on which the first-layer wirings are formed; and a plurality of second-layer wirings formed on the insulating film so that each of the second-layer wirings intersects the virtual line and has opposite ends respectively connected to different ends of the first-layer wirings through contact holes.  An inductor element having a spiral structure along the virtual line constitutes the first-layer wirings the contact holes and the second-layer wirings.  The opposite ends of the inductor element are primary electrodes, and one end and a desired intermediate point of the inductor element are secondary electrodes.  Because the transformer has such a structure, a three-dimensional coil can be formed on the substrate so that the transformer can be formed in an MMIC.
Patent CA-2064541-A1 (CA)
Inventor: GRAY THOMAS
IPC: H04L1/20
Filed: 1992-03-31
Abstract: A method of determining the reliability of data transmission system links is comprised of transmitting a data stream containing a data integrity sequence and at least one accumulated error count sequence along one of the links, determining the integrity of the data in the stream at the end of the link using the data integrity sequence, adding a count of data errors detected to the accumulated error count sequence, and periodically detecting the count as a measure of the reliability.
Patent CA-2065694-A1 (CA)
Title: Process for coating a workpiece of steel with an anti-corrosive agent
Inventor: ISENBERG RAINER
IPC: F16B33/06
Filed: 1992-04-09
Abstract: ABSTRACT               PROCESS FOR COATING A WORKPIECE OF STEEL WITH AN ANTI-CORROSIVE AGENT            A process for coating a workpiece of steel with an anti-corrosive agent,  comprising the steps of providing the surface of the workpiece with a chemo-mechanical layer, and chromatizing the chemo-mechanical layer, and charac-terized by the steps of providing the chromated layer with a further layer containing metallic components and organic binding agents,  and curing the further layer by a heat treatment.
Patent CA-2066443-A1 (CA)
Title: Parallel i/o newtork file server architecture
Inventor: PITTS WILLIAM M
IPC: H04L29/08
Filed: 1990-08-20
Abstract: A file server architecture is disclosed, comprising as separate processors, a network controller unit (110), a file controller unit (112) and a storage processor unit (114). These units incorporate their own processors, and operate in parallel with a local Unix host processor (118). All networks are connected to the network controller unit (110), which performs all protocol process-ing up through the NFS layer. The virtual file system is implemented in the file controller unit (112) and the storage processor (114) provides high-speed multiplexed access to an array of mass storage devices. The file controller unit (112) controls file infor-mation caching through its own local cache buffer, and controls disk data caching through a large system memory which is acces-sible on a bus by any of the processors.
Patent CA-2068175-A1 (CA)
Inventor: KWARTENG KOFI B
IPC: A61F2/00
Filed: 1992-05-07
Abstract: An improved method of producing a site for tissue ingrowth on a surgical implant 20, 20' by embedding a space occupier 10 possessing a desired pattern in the surface of the implant at the desired location for ingrowth and then solubilizing the embedded space occupier 10 to leave the pattern on the implant surface.  Preferably, the implant 20, 20' is fabricated from a composite comprising a semi-crystallinethermoplastic resin such as polyetheretherketone or polyphenylene sulfide, and the space occupier 10 is an acid-soluble metal plate machined to produce the desiredpattern and removed by aqueous acid solution. The space occupier 10 is embedded onto the composite surface by induction heating.
Patent CA-2068554-A1 (CA)
Inventor: CORAL NEVIO
IPC: F16L27/08
Filed: 1992-05-13
Abstract: "Elbow joint constituted by a pair of hinged arms in a single piece with corresponding clamping collars"                  ABSTRACT Elbow  joint  for connecting rigid tubular sections (C,  B)  by  means  of  flexible  tubular  sections  (D), constituted  by  two  pairs  of  arms  (6,  6a)  mutually articulated; each pair of arms being in a single piece with  a clamping  collar  (7a)  or  each  arm being  in  a single piece with a semi-collar (11, 11a), obtained from a flat plate  (A),  to  constitute  orientatable  piping, particularly devices for the localised suction of fumes, dust  and/or vapours,  however  these may be  generated; Figure 1.
Patent CA-2070203-A1 (CA)
Inventor: WHITMAN TIMOTHY W
IPC: B01D29/62
Filed: 1992-06-02
Abstract: A filter for flowing polymer having a filter element progressively advanced between an on-stream position communicating between the upstream and downstream passages and a backflush position.  In the latter position, filtered polymer is forced through a segment of the element in the direction opposite to on-stream flow.  The filter is advanced in steps alternately with the energization of a pump for creating the backflush pressure.  The steps are determined to cause each filter portion to remain in the backflush position for at least two consecutive steps.
Patent CA-2071413-A1 (CA)
Title: Method to establish and enforce a network cryptographic security policy in a public key cryptosystem
Inventor: MATYAS STEPHEN M
IPC: G06F21/00
Filed: 1992-06-17
Abstract: Device A in a public key cryptographic network will be constrained to continue to faithfully practice a security policy dictated by  a  network  certification  center,  long after device A s public key PUMa has been certified. If device A alters its operations from the limits encoded in its  configuration vector,  for  example  by  loading  a  new configuration vector, device A will be denied participation in the  network.   To  accomplish  this  enforcement  of  the network  security  policy  dictated  by  the  certification center,  it is necessary  for the  certification center to verify at the time device A requests certification of its public  key PUMa,  that  device  A  is  configured  with the currently  authorized  configuration  vector.   Device  A  is required to transmit to the certification center a copy of device A's current configuration vector, in an audit record. The certification center then compares device A's copy of the configuration vector with the authorized configuration vector for device A stored at the certification center.  If the  comparison  is  satisfactory,  then  the  certification center will issue the requested certificate and will produce a digital signature dSigPRC on a representation of device A's  public  key  PUMa,  using  the  certification  center's private  certification  key  PRC.  Thereafter,  if  device  A attempts  to  change  its  configuration vector,  device  A's privacy key PRMa corresponding to the certified public key PUMa,  will automatically  become  unavailable  for  use  in communicating in the network.
Patent CA-2071419-A1 (CA)
Inventor: COOPER WILLIAM D
IPC: B23K9/133
Filed: 1992-06-17
Abstract: A retainer ring for a container of low twist welding wire which container includes a cylindrical outer wall, a lower partition and an upper opening through which the weld-ing wire is drawn from a hollow, cylindrical spool of weld-ing wire formed from a multitude of convolutions of wire in layers provided in the container wherein the retainer ring comprises a generally flat outer portion with an outer pe-riphery fitting into the outer wall of the container, mini-mally contacting the wire surface, and comprising a number of projecting lobe portions whereby the outer periphery of the ring contains alternate areas first being closer to and then being farther from the outer walls of the container when the retainer ring is resting upon the hollow spool of welding wire in the container and an inner bell mouthed por-tion extending upwardly and defining an innermost wire ex-traction opening with a diameter substantially smaller than the spool of wire in the container.
Patent CA-2073415-A1 (CA)
Title: Oil well production system
Inventor: SAUER CARL W JR
IPC: E21B23/03
Filed: 1992-07-08
Abstract: ICR 8289 & 90/004 Abstract Of The Disclosure A production system for a  subsea well  includes a concentric gas lift string and a production tubing string both located within a production riser.  Lift gas injected down the annulus between the production tubing string and gas tubing string is injected into the production tubing string below the mud  line and thus provides  gas  lift assistance to the produced fluid stream.   Thus increased produced  fluid  flow  is provided  while  simultaneously insulating the produced fluid from the surrounding ocean thus maintaining the temperature of the produced fluid which aids separator efficiencies once the produced fluid reaches a surface platform associated therewith.   The use of the concentric gas tubing string avoids pressurizing of the production  riser.    A gas  lift mandrel  and  associated apparatus are provided at the subsurface tubing hanger to permit gas to be selectively directed down to a lower gas lift valve located deeper within the well.
Patent CA-2078633-A1 (CA)
Inventor: JOHNSON THOMAS H
IPC: C10L1/22
Filed: 1992-09-18
Abstract: ABSTRACT         N-SUBSTITUTED CARBAMATES AND THEIR USE AS GASOLINE ADDITIVES      The invention provides polyolefin-polyamine-N-substituted polycarbamates, useful for preventing or reducing deposits in engines, of the general formula:                                 (I)   wherein n is 2 to 8; R1 represents a polyolefin chain having a number average molecular weight (Mn) in the range from 500 to 9900; each R2 independently represents a C2-C8 alkylene group; R3 represents a hydrogen atom or a C1-C7 alkyl group; each R4 independently represents a hydrogen atom, a C1-C7 alkyl group, or -COOR5 with at least two of R4 being -COOR5 and wherein each R5 independently represents a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms: a process for their preparation; and gasoline compositions and gasoline additive concentrates containing them.
Patent CA-2080424-A1 (CA)
Inventor: MOY JERRY
IPC: B01J13/18
Filed: 1992-10-13
Abstract: ABSTRACT OF THE DISCLOSURE           Incorporation of inorganic colloidal particles into an encapsulation dispersion results in microcapsules having polymer shell walls further comprising colloidal inorganic particles.  Capsules prepared in this manner have been found to be smaller in size, have a narrower size distribution, and exhibit decreased shell wall permeability.  Capsules prepared using these colloidal particle dispersions are particularly useful in carbonless imaging constructions such as those containing a fill solution of a color precursor in a hydrophobic solvent and form deeply colored images when combined with a color developer.
Patent CA-2083213-A1 (CA)
Inventor: WIEDERER GREGG E
IPC: A47G25/06
Filed: 1992-11-18
Abstract: An end cap for a garment hanger caddy includes an inner portion sized to fit into the end of a tubular member, an outer portion sized to abut the end of the tubular member, and a groove which extends at least partially around the end cap between the inner and outer portions.  The inner portion comprises raised splines separated by substantially planar flats.  The outer portion comprises raised ribs separated by arcuate interib surfaces.
Patent CA-2084331-A1 (CA)
Title: Method and composition for treating viral infections
Inventor: WAGLE SUDHAKAR S
IPC: C07K14/47
Filed: 1992-12-02
Abstract: ABSTRACT     The present invention is directed to substantially pure peptide composition having antiviral activity. These peptides are characterized by having a molecular weight of from between 5,000 to 40,000 Daltons.  These peptides are further characterized by having at its 5' end the amino acids shown in Sequence Id. No. 1 and its 3' end either Sequence Id. Nos. 4 or 6.  Additionally, this peptide is further characterized at its 5' end by being coded for DNA sequence shown in Sequence Id. No. 3.  This composition can be used to treat viral infections, in particular HIV and HHV-6.