baber/WOPTO huggingface dataset:
Patent CA-2001026-A1 (CA)
Inventor: CHU HSIEN-KUN
IPC: C08K5/548
Filed: 1989-10-19
Abstract: A chelated titanium catalyst can be improved by the addition of an additive selected from the group consisting of organomercaptans of the formula RSH, where R is a hydrocarbon radical containing from 3 to 12 carbon atoms and mercapto containing silanes of the formula HSR'SiX3, where R~ is a divalent hydrocarbon radical having from 1 to 8 carbon atoms and X is an alkoxy radical having 1 to 6 carbon atoms. The improved composition has a reduced tendency to develop color upon storage. The improved composition is particularly useful in a silicone composition comprising a hydroxyl endblocked polydiorganosiloxane and an alkoxysilane or mixture of alkoxysilanes or in a silicone composition comprising an alkoxy endblocked polydiorganosiloxane.
Patent CA-2004636-A1 (CA)
Title: Externally-adjustable split stationary elastomer energized seal
Inventor: DRUMM R KEVIN
IPC: C12P21/08
Filed: 1989-12-05
Abstract: ABSTRACT OF THE DISCLOSURE    A novel externally-mounted, stationary-design, self-aligning rotary face-seal, which is usually fully split is provided for securement to a rotatable member extending through a mounting plate secured to the housing of a particular piece of equipment.          The externally-mounted, stationary-design, self-aligning, rotary face-seal includes a rotor, fluid-tightly fitted and secured onto the rotatable member.  A stator is provided which is urged into rotatable sealing contact with the rotor by means of a resilient operator.  The resilient operator which may be, e.g. a cylind-rical elastomeric energizer or a plurality of pre-loaded compres-sion springs, captured on anti-rotation pins, is disposed between the mounting plate and the stator.  By means of the axially-di-rected force from the resilient operator, the stator is pressed into tight, sealing contact with the adjacent face of the rotor.          The seal is also designed in such a manner as to utilize the pressure of the fluid or gas being contained in the equipment to create an axially-directed force urging the stator into sealing contact with the rotor.
Patent CA-2005284-A1 (CA)
Title: Chloroformates and aromatic ketones and their preparation
Inventor: BOETTCHER ANDREAS
IPC: C07C69/96
Filed: 1989-12-12
Abstract: Abstract of the Disclosure:  Chloroformates of aromatic ketones  are prepared from aromatic hydroxyketones by phosgenation in the presence of acidic catalysts.        The novel chloroformates are intermediates for the synthesis of organic compounds.
Patent CA-2006190-A1 (CA)
Title: Control device for a hand-free alternate operating telephone set
Inventor: ARNAUD THIERRY
IPC: H04M9/08
Filed: 1989-12-20
Abstract: A CONTROL DEVICE FOR A HAND-FREE ALTERNATE OPERATING   TELEPHONE SET            ABSTRACT OF THE DISCLOSURE     A control  device for a hand-free telephone set com-prises an emission channel  including a microphone (M).  a signal  compressor  (GE)  and  an attenuator  (ATE).  and  a reception channel  including a signal compressor (GR).  an attenuator (ATR) and a loudspeaker (HP). the assembly of the  emission  and  reception  channels  forming  an  ampli-fication loop, due to the acoustic coupling (AC) between the  microphone and  loudspeaker  and  to  the  electric coupling (AL) in the line interface. Moreover. means are provided for initially setting the gain of said loop to a determined value slightly lower than 1  (0 dB) and means for subsequently maintaining constant.  in operation.  the sum of the compressor and attenuator gains.
Patent CA-2007204-A1 (CA)
Title: Solid gel dispensers for achieving controlled release of volatile liquid materials and method for preparing same
Inventor: GRAVIER DANIEL
IPC: B01J13/00
Filed: 1990-01-05
Abstract: SOLID GEL DISPENSERS FOR ACHIEVING CONTROLLED    RELEASE OF VOLATILE LIQUID MATERIALS AND      METHOD FOR PREPARING SAME                          ABSTRACT           Aesthetically attractive, free standing dispensers for the controlled release of volatile liquid materials such as perfumes and fragrances into the atmosphere consist essentially of composite hydrogels comprising a continuous phase of a solubilized polyvinyl alcohol, a dispersed phase comprising a polyelectrolyte and an aqueous solution of the volatile liquid that is distributed between said continuous and dispersed phases.  The exterior surfaces of the dispenser remain dry to the touch throughout its useful life.
Patent CA-2010471-A1 (CA)
Title: Squeeze mop
Inventor: PACIONE ALBERT J
IPC: E01H1/12
Filed: 1990-02-20
Abstract: ABSTRACT OF THE DISCLOSURE      A litter pick-up conversion kit for a butterfly-type sponge mop is provided whereby hooks or spikes may be secured to the pivoted operating plates of the sponge mop in lieu of the sponge so as to engage and pick up litter upon pivotal movement of the operating plates.   The  litter  pick-up conversion  kit may  be stored separately and secured to the pivoted operating plates upon removal of the sponge or may be secured to the upper surface of the operating plates opposite the sponge and upon removal of the sponge, pivoted downwardly into an operative litter pick up position.
Patent CA-2012632-A1 (CA)
Title: Process for the expression of a recombinant gene
Inventor: BRINKMANN ULRICH
IPC: C12R1/91
Filed: 1990-03-20
Abstract: For the expression of a recombinant gene which contains AGA or/and AGG codons for arginine in E. coli after transformation with an expression vector which contains the recombinant gene, where the recombinant gene contains more than 3% AGA or/and AGG codons the amount of these codons is reduced to not more than 3% based on the total amount of the codons in the gene. <IMAGE>
Patent CA-2013914-A1 (CA)
Inventor: WHITE DONALD H JR
IPC: B01D53/047
Filed: 1990-04-05
Abstract: 1. A process for the sequential purification and fractionation of air in a single column and in the absence of pretreating the air feed to remove moisture comprising passing an air feed containing a gaseous component harmful to humans through an adsorber column to produce product effluent, said column having at least two adsorption zones, said column having a first zone comprising a feed purification adsorber for purifying an air feed and having a first adsorbent therein for adsorbing the harmful gaseous component and water vapor from said feed to effect purification, said first adsorbent capable of being regenerated, and a second zone comprising an air fractionation adsorber for adsorbing at least on component of air and having a second adsorbent therein to effect fractionation of air, said second adsorbent capabie of being regenerated, said first zone operating as a heaterless pressure-swing adsorber and said second zone operating as a purge sweep adsorber, said column being sized so that the heat of adsorption released during the adsorption of water vapor from the air feed is retained in said column and so that on application of a volume of purge gas to said column said first and second adsorbents are both regenerated, said second zone being sized so as to contain sufficient adsorbent to carry out the fractionation unaffected by the heat front generated by the heat of adsorption released in the first zone and to prevent breakthrough of the mass transfer front during fractionation, and removing the product effluent from said column.
Patent CA-2014877-A1 (CA)
Inventor: ENOMOTO NORIHIDE
IPC: C08F22/36
Filed: 1990-04-19
Abstract: Disclosed is a novel imidated copolymer of indene or a polymerizable component of naphtha oil and maleimide and optionally maleic anhydride.  The copolymer is useful as a resin improver and a compatibilizing agent for the purpose of improving heat resistance and mechanical properties.  The polymerizable component of naphtha oil normally composed of:          (A) 60 - 99 wt.% of indene, (B) 0.5 - 29.5 wt.% of styrene, and (C) 0.5 - 29.5 wt.% of one or more compounds selected from the group consisting of .alpha.-methylstyrene, methylstyrene, methylindene, dimethylstyrene, trimethylstyrene, cumarone and dicyclopentadiene.
Patent CA-2015313-A1 (CA)
Title: Glycosylated fgf and production thereof
Inventor: SENOO MASAHARU
IPC: C12R1/91
Filed: 1990-04-24
Abstract: TITLE: GLYCOSYLATED FGF AND PRODUCTION THEREOF    ABSTRACT       Disclosed are (1) a mutein of a fibroblast growth factor (FGF), the DNA having introduced therein at least one nucleotide sequence coding for a glycosylation site, (2) a DNA coding for the mutein of (1), (3) a vector containing the DNA of (2), (4) a transformant transformed with the vector of (3), and (5) a process for producing the mutein which comprises cultivating in a culture medium the transformant of a yeast or animal cell transformed with a vector of (3), and producing and accumulating the mutein of (1) in the culture medium, whereby the FGF mutein into which at least one glycosylation site has been introduced is improved in productivity, stability and activities, and advantageously used as medicine.
Patent CA-2020943-A1 (CA)
Title: Holographic photopolymer compositions and elements for refractive index imaging
Inventor: TROUT TORENCE J
IPC: G03H1/02
Filed: 1990-07-11
Abstract: TITLE         HOLOGRAPHIC PHOTOPOLYMER COMPOSITIONS AND ELEMENTS FOR REFRACTIVE INDEX IMAGING                      ABSTRACT    Holographic photopolymer compositions having fluorinated binders are provided that produce excellent reflection holograms when holographically imaged.
Patent CA-2021000-A1 (CA)
Title: Pharmaceutical and dietary uses of fatty acids
Inventor: HORROBIN DAVID F
IPC: A23L33/20
Filed: 1990-07-12
Abstract: A B S T R A C T       PHARMACEUTICAL AND DIETARY USES OF FATTY ACIDS       A method of preparation of a medicament for reducing the risk of production of undesirable metabolites from free bodily AA on administration of AA to current deficiency thereof,  wherein GLA and/or DGLA as such or in the form of a salt dissociated at physiological pH is prepared as said medicament alone or incorporated in a pharmaceutically acceptable diluent or carrier.
Patent CA-2022536-A1 (CA)
Inventor: THIMON JACQUES
IPC: B65B11/04
Filed: 1990-08-02
Abstract: A method and apparatus for helically banding a film on a palletized load, wherein during the banding operation the reel of film and the control roller are held in a fixed location with their horizontal axes parallel. The film is acted upon in order to, in suc-cession and in this order,  starting from the reel of film,  pass  it  over  the  control  roller,  change  its direction, continuously, in order to switch its trans-verse  direction  from  the  horizontal  state  when  it leaves the roller to the vertical state when it enters the roller, and to pass it over the roller.
Patent CA-2022912-A1 (CA)
Title: Process for the preparation of an aromatic polyether in the presence of finely divided codensation auxiliaries
Inventor: FISCHER HARTMUT
IPC: C08G65/40
Filed: 1990-08-08
Abstract: Abstract of the disclosure Process for the preparation of an aromatic polyether in the presence of finely divided condensation auxiliaries.            The process for the preparation of an aromatic polyether by condensation of the reactants in the presence of carbonates of metals of Group I of the Periodic Table, as condensation auxiliaries, employs the metal carbonates sodium  carbonate  or  sodium  bicarbonate  or  mixtures thereof in the form of very finely ground salts.            The fine particle size distribution of the carbonate allows a significant shortening of the reaction times and permits polyethers having a defined degree of condensa-tion to be reproducibly prepared.
Patent CA-2022961-A1 (CA)
Title: Method and apparatus for determining a rate of flow of blood for an extracorporeal blood therapy instrument
Inventor: ASH STEPHEN R
IPC: G01F1/7086
Filed: 1990-08-09
Abstract: A? -Echard  4-1 Abstract of the Disclosure For use with an extracorporeal blood therapy instrument, method and apparatus are disclosed for determining the flow rate of blood passing between the patient and the therapy instrument.   The  flow measurement apparatus  includes a delivery unit for producing a saline bolus interface at a first  position  of  a  measurement  channel  having  a predetermined volume between the first and second position. A sensor unit included in the apparatus detects the saline bolus interface as it passes the second position in the channel.  An output signal from the sensor unit along with an  indication  of  the  production  of  the  saline  bolus interface is utilized by a control unit to determine the blood flow rate.  The control unit of the apparatus utilizes instantaneous and average blood flow algorithms to calculate instantaneous and average blood flow rates based on the time interval associated with the production of the saline bolus interface and its progression to a predetermined position in the measurement channel.   Successive interfaces are also produced in the blood flow to derive an average blood flow rate.
Patent CA-2023459-A1 (CA)
IPC: B62D5/093
Filed: 1990-08-16
Abstract: Abstract Disclosure is made of a hydraulic steering unit (1) comprising a housing (2) having a pressure chamber (3) which has an aperture (22) at one end through which a rotatably mounted steering control apparatus is led to the outside and the aperture is sealed from the outside by a sealing ring (9).      With a rise in pressure in the pressure chamber (3) the load on the sealing ring (9) increases and therefore so does the friction between the steering control unit (4) and the sealing ring (9).  This leads to premature wear of the sealing ring. This wear is to be avoided without making the steering unit (1) too expensive.      For this purpose, between the sealing ring (9) and the pressure chamber (3), a one-piece pressure reduction ring (10) is provided to surround the steering control apparatus (4). Between the pressure reduction ring (10) and the sealing ring (9) there is a fluid collecting chamber (11) having an outlet. The pressure reduction ring (10) comprises a circumferential flange-like projection (17) which lies against the end (16) of the pressure chamber (3).
Patent CA-2024290-A1 (CA)
Title: Polymeric foams
Inventor: HODSON ROGER J
IPC: C08J9/14
Filed: 1990-08-30
Abstract: ABSTRACT                    Polymeric Foams A method for the preparation of a polymeric foam which comprises vaporising a fluorine-containing ether in the presence of a foamable polymer or the precursors of a foamable polymer.
Patent CA-2024577-A1 (CA)
Title: Antioxidant process
Inventor: MINA GEORGE L
IPC: C07C37/16
Filed: 1990-09-04
Abstract: CASE:  6055 JDO:kp Abstract 3,5-dialkyl-4-hydroxybenzyl-substituted benzene compounds are made by reacting 2,6-di-alkyl-4-methoxymethyl phenol with a benzene compound having an unsubstituted nuclear position in an inert solvent and in the presence of an organic sulfonic acid catalyst while distilling methanol by-product from the reaction mixture as it forms.
Patent CA-2025771-A1 (CA)
Inventor: BECKER CHRISTOPHER H
IPC: G01N27/62
Filed: 1990-01-12
Abstract: A method is disclosed for the processing and preparation of a sample (7) of one or more nonvolatile or thermally labile molecules for mass spectral analysis which comprises providing a solution of such molecules dissolved in a solvent, freezing the solution of dissolved molecules to form a frozen solution (8), and exposing the frozen solution to a source of energy (30), to desorb the molecules to be analyzed from the surface of the frozen solution.  The desorbed molecules may be directly ionized during desorption or may be photoionized after desorption (40), if necessary, and then conventionally analyzed in a mass spectrometer (60). The method mitigates or minimizes possible fragmentation or clustering of such large molecules during desorption from the frozen sample as well as providing a more reliable and uniform desorption. If desired the desorbed molecules may be subjected to a separate and controlled fragmentation step prior to entering the final mass spectral analysis zone. The method may be interfaced with liquid chromatography equipment.
Patent CA-2028740-A1 (CA)
Title: Ladder assembly
Inventor: BALLARD NORMAND
IPC: E06C5/00
Filed: 1990-10-29
Abstract: There is provided a ladder assembly suitable for use with vehicles such as beverage trucks, the ladder assembly being completely stowable within the body of the vehicle and pulling out to provide an upper platform and steps extending downwardly therefrom.
Patent CA-2029663-A1 (CA)
Title: Control device for operating a coating device
Inventor: ESSER REINHARD
IPC: G01C9/06
Filed: 1990-11-09
Abstract: In the process for operating a coating apparatus, it is provided for changes in the angle of the coating edge of a doctoring element, for example in relation to the horizontal, to be directly detected by means of a signal transmitter which is mounted on the doctoring element 1 in the vicinity of its coating edge 18. This signal transmitter can operate on an electromagnetic basis so that the signal is transmitted in a wireless fashion to a receiver. An inclination switch is preferably provided, said switch detecting small deviations of a desired angle of the coating edge 18 in relation to, for example, the horizontal by means of the displacement of a mercury bead and two electrodes which are shortcircuited by the mercury bead. 
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Patent CA-2031252-A1 (CA)
Title: Doping method of impurity into semicondutor trench wall
Inventor: AOKI KENJI
IPC: H01L21/22
Filed: 1990-11-30
Abstract: ABSTRACT      A trench is formed in a semiconductor substrate to provide therein an inner wall.  Inert film is removed from the trench inner wall to expose an active surface.  A source gas containing an impurity is applied to the active surface whereat the impurity is adsorbed to thereby form thereon an impurity film.  The substrate is annealed to diffuse the impurity into the inner wall to thereby dope the impurity.
Patent CA-2033684-A1 (CA)
Inventor: CROCE CLAUDIO
IPC: H01R24/38
Filed: 1991-01-07
Abstract: An electric contact holder base (10) for electric lighters or other gadgets for motor vehicles is provided with a thermic protection against overheating that allows its reutilization. The base (10) has a substantially cylindrical body, permanently fixed to a seat in the passenger's cabin and carries electric contacts for the alimentation of the gadget that is inserted in said cylindrical body. At least as bimetallic spring (13) acts as a holding element of the lighter in the cylindrical body during the resting phase of the same. A bimetallic lamina (16) is the thermic protection device against overheatings; this is a separated element, connected at one end with an electric contact (12), while the other end (17) is facing the wall of the cylindrical body (10) and folded back towards its bottom (18).   <IMAGE>
Patent CA-2038312-A1 (CA)
Title: Turret-type rotary rod-feeder machine
Inventor: MASERA ERCOLE
IPC: B21C47/18
Filed: 1991-03-14
Abstract: ABSTRACT      Turret-type rotary rod-feeder machine located upstream of a user machine such as a straightener machine, shears and/or bending and shaping machine, the rod-feeder machine  being suitable to bear rolls of rod made with a hot or cold process for reinforced concrete and comprising a rotary support  (22), which has a substantially vertical axis of rotation (17) and bears along a circumference at least two reels (11) holding rolls (15) of rod and having their axis of rotation substantially parallel to the axis of rotation (17) of the rotary support (22), each reel (11) cooperating with a specific stand (13) that engages and guides the rod.
Patent CA-2039373-A1 (CA)
Inventor: OKANOUE KAZUHIRO
IPC: H04L25/03
Filed: 1991-03-28
Abstract: A digital data communication system for transmitting data over a transmission channel. The system is capable of estimating a channel impulse response with high reliability even when the channel is time-varying and suffers from intersymbol interference. Even when the variation on the channel is rapid, the system reduces the influence of demodulation delay particular to a maximum likelihood sequence estimator and thereby realizes highly reliable data transmission.
Patent CA-2039786-A1 (CA)
Inventor: CHERRY MICHAEL F
IPC: H04B10/275
Filed: 1991-04-04
Abstract: A communication system in which  a  plurality  of  nodes  or terminal access  units  2 are connected via a media ring 3. Data is transmitted in a series of data packets within which the   bits   or  bytes  are  multiplexed.   To  ensure  line availability and avoid contention and delay each access unit has preassigned channels within the packet.
Patent CA-2040882-A1 (CA)
Title: Electric traction motor
Inventor: CULP GORDON W
IPC: H01L41/09
Filed: 1991-04-19
Abstract: ABSTRACT OF THE DISCLOSURE An electric traction motor provides forcible rotary or linear positioning of a motor shaft by pairs of actuators that are electrically stimulated to produce tractive cyclical walking. Smooth walking actuators provide high mechanical efficiency and long life by eliminating sliding friction. The actuators are stimulated by a high efficiency electrical drive system to position relatively large-area traction members that match the speed of the motor shaft. The preferred embodiment comprises piezoelectric actuators having layers of shear deformation piezoelectric material. Conventional bearings and lubrication are not required, and embodiments of the motor can be constructed to operate satisfactorily in intense magnetic fields and severe ionizing radiation. The traction motor can range in scale from microscopic to very large, and positioning accuracy on the order of nanometers has been demonstrated.
Patent CA-2042279-A1 (CA)
Title: Lenson energy dissipator for shorewalls
Inventor: LENSON WALTER J
IPC: E02B3/06
Filed: 1991-05-09
Abstract: F o r m  24 ( ss. 21, 31, 34, and 142 ) A B S T R A C T            Shore erosion on the Great Lakes and other large inland lakes results in the annual loss of millions of dollars in lost land and damages to structures.          There are numerous ways in whichshores can be protected. These include:     Beach Nourishment            Revetments Perch Beaches                Shorewalls Headlands & Groynes          Breakwaters & Jetties Protection works that gradually dissipate wave energy (i.e. beaches) are preferable to vertical structures (shorewalls) that directly confront the full force of waves.          The amount of energy contained in a wave is directly proportional to its wavelength and the square of its height.  For instance, a two-foot wave with a period of five seconds between crests contains over 4000 foot-pounds of energy per foot of wave crest (horizontal linear foot of wave crest). A four-foot wave with the same period contains over 16,000 foot-pounds of energy per foot of wave crest.            Shorewalls are shore protection measures with a vertical face.          They may be either thin structures penetrating deep into the ground (i.e. sheet piling) or gravity structures resting on the surface.          They must be structurally designed to withstand the full force of waves breaking against them.  When such occurs the energy is dissipated and reflected.  Dissipation results in some of the energy being directed downward to the supporting substrate, upward to the top of the shorewall and the remainder into the structure itself.            The downward forces soon scour the supporting substrate at the toe of the shorewall and weaken the structure, while the upward forces cause water to overtop the crest of the shorewall and penetrate the supporting backfill causing a hydraulic head to develop and loss of material through erosion.            The Lenson Energy Dissipator for Shorewalls addresses these latter two concerns - elimination of toe scour and overtopping of shorewalls.
Patent CA-2042422-A1 (CA)
Title: Sealing assembly between a tap body and a mixer valve
Inventor: ORLANDI ALESSIO
IPC: F16K11/06
Filed: 1991-05-13
Abstract: ABSTRACT      The invention relates to a sealing assembly between a cartridge type mixer value and a tap body in which it is inserted and fixed by a ring nut.  Seals (13-19) are placed at the top of the mixer valve (11) and/or tap body (10) for either a direct sealing of the two components or with the use of the ring nut (12).