baber/WOPTO huggingface dataset:
Patent CA-2126111-A1 (CA)
Title: Wafer-like processing after sawing dmds
Inventor: GALE RICHARD O
IPC: B28D5/02
Filed: 1994-06-17
Abstract: ABSTRACT A processing fixture and method of fabricating micromechanical devices, such as digital micromirror devices, that allows fragile structures on wafer 22 to be protected from debris during the saw operation and subsequent cleaning operations. The wafer 22 is attached to a vacuum fixture 26 after partially sawing the water 22 to create saw kerfs. The backside of the wafer 22 is then ground down to the saw kerfs 24 to separate the devices 32. Each device 32 is held on the fixture by a vacuum in the headspace above the device 32. In an alternate embodiment the devices are separated by sawing completely through the wafer while in the fixture.
Patent CA-2127509-A1 (CA)
Title: Lawn sprinkler with cam-controlled variable spray pattern
Inventor: BURNWORTH DOUGLAS J
IPC: B05B3/16
Filed: 1994-07-06
Abstract: An oscillating sprinkler adjustable to selectively alter and adjust the spray pattern as desired is provided. Adjustment is provided by an internal selectable cam connected to an external rotary dial at the distal end of the sprinkler. Placing the spray adjustment dial at the distal (non-hose) end of the sprinkler minimizes the chances of the operator getting wet while selecting the desired spray pattern while the sprinkler is in operation.
Patent CA-2128161-A1 (CA)
Inventor: ABEL ROLAND
IPC: C07C67/055
Filed: 1994-07-15
Abstract: Abstract Surface impregnated catalyst, process for the production thereof, and use thereof for the preparation of vinyl acetate The invention relates to Pd/R/Au,  Pd/R/Ba or Pd/R/Cd supported catalysts built up in the form of an outer layer,  the production thereof and the use thereof for preparing vinylacetate from ethylene,  acetic acid and oxygen in the gas phase. The specified catalysts are produced by impregnating the support particles with a solution of salts of the corresponding elements and then drying them, with the dynamic viscosity of the solution being at least 0.003 Pa?s and the solution volume in impregnation being more than 80 % of the pore volume of the support particles and the duration of the impregna-tion and also the time until commencement of the drying being selected 80 as to be sufficiently short for, after completion of the drying, the specified metal salts to be present in an outer layer of from 5 % to 80 % of the pore volume of the support particles.
Patent CA-2128162-A1 (CA)
Title: Surface impregnated catalyst, process for the production thereof, and use thereof for the preparation of vinyl acetate
Inventor: ABEL ROLAND
IPC: B01J23/66
Filed: 1994-07-15
Abstract: Abstract Surface impregnated catalyst, process for the production thereof, and use thereof for the preparation of vinyl acetate The invention relates to Pd/K/Au, Pd/K/Ba, or Pd/K/Cd supported  catalysts having  an  impregnated  layer structure,  the  production thereof  and  also  the  use thereof for preparing vinyl acetate from ethylene, acetic acid  and  oxygen  in  the  gas  phase.    The  catalysts specified are produced by spraying the support particles, while mixing intimately with a solution of salt of the corresponding elements in the form of drops having an average diameter of at least  0.3 mm or in the form of liquid  jets  and  then  drying  the  support  particles immediately, with the dynamic viscosity of the solution being at least 0.003 Pa?s and the solution volume in spraying being from 5 to 80 % of the pore volume of the support particles.
Patent CA-2130049-A1 (CA)
Title: Christmas tree light harness
Inventor: NETCHAY ALEXANDER G
IPC: H01R25/16
Filed: 1994-08-12
Abstract: The wiring harness attaches around the trunk of a tree above at least one branch therefrom.  The harness has a flexible, elongated support web, having complementary connection hook and pile fasteners at spaced-apart points therealong whereby a loop may be formed with the support web, to pass around the tree trunk above a branch, thereby securing the position of the harness.  Several electrical outlets, preferably at least five, are secured to the web at spaced-apart points therealong, and the electrical outlets are connected to each other in a single electrical circuit.  A conventional three-prong plug is provided, preferably integrated with one of the outlets into a single unit.
Patent CA-2130146-A1 (CA)
Inventor: MAZUR RICHARD J
IPC: B61H11/00
Filed: 1994-08-15
Abstract: Apparatus for implementing two to three state emulator process so two state dump valve can be used in wheel slip correction for braking systems comprising an AND gate which receives a plurality of inputs for generating an output based on value of inputs.  An OR gate receives another plurality of inputs for generating another output based on value of inputs.  One such input being the output generated by such AND gate.   A valve response checking unit receives another plurality of inputs for generating a plurality of outputs.   One input is the output  generated by such OR gate.          Another OR gate receives another plurality of inputs for generating an output based on value of inputs.  A lap state determination unit receives  another  plurality  of  inputs  for  generating  another plurality of outputs.  One input being one of outputs generated by such valve response checking unit and another input being such output generated by such second OR gate.  A lap state interrupt processor unit receives another plurality of inputs for generating another plurality of outputs.   One input being one of outputs generated by such lap state determination unit and inputs being generated by the valve response checking unit.   A lap  state simulation unit receives a plurality of inputs for generating another plurality of outputs.  One input being generated by such lap state determination unit and one input being generated by such valve response checking unit.  One output generated by such lap state simulation unit being representative of a magnet valve state.
Patent CA-2130582-A1 (CA)
Title: Flap valve assembly for trigger sprayer
Inventor: MAAS WILHELMUS J J
IPC: B65D83/76
Filed: 1993-02-23
Abstract: The trigger operated pumping mechanism (49) for a fluid dispensing device (10) comprises: a body (14) having a hollow cylinder (48) therein for receiving a piston (42), the hollow cylinder (48) extending to a fixed back wall (326) in the body (14), the cylinder (48) having a fluid inlet valve (330) and a fluid outlet valve (336) associated with the back wall (326); the valves (330 and 336) being pressure controlled; the inlet and outlet valves (330 and 336) are first and second plastic flap valves (330 and 336) which are each positioned opposite an opening (332 and 334) in or adjacent to the back wall (326) of the cylinder (48) and by making the remaining space between the back wall (326) and the movable wall (328) at the end of the ejection stroke of the piston (42) as small as possible, thereby to facilitate the creation of high vacuum and high pressure during intake and ejection strokes of the piston (42) and to facilitate priming with a minimum of strokes.
Patent CA-2132011-A1 (CA)
Inventor: SCHMITT PETER J
IPC: A61F2/06
Filed: 1994-01-13
Abstract: A radially expandable tubular prosthesis (16) which allows for controlled expansion in a circumferential direction following implantation while limiting expansion in a longitudinal direction. The prosthesis (16) is particularly suited to intraluminal implantation via a catheter and is also particularly suited for percutaneous implantation in children.
Patent CA-2137546-A1 (CA)
Title: Fluid diffuser
Inventor: ALLISON WILLIAM
IPC: B01F15/00
Filed: 1993-06-04
Abstract: A diffuser for use in submerged conditions comprises an elongate material strip made from two separate sheets (1, 2) of synthetic plastics material which are separately perforated in two lateral zones (1a, 1b and 2a, 2b) and then heat sealed together at their longitudinal edges (3, 4) and at intermediate positions (5, 6) to either side of a steel cable (7) positioned between the sheets (1 and 2). The steel cable (7) is arranged to act as a negative buoyancy aid. When air is supplied to the tubes (8, 9) they distend into an inflated condition and air passes into the surrounding medium through the tube perforations. Various other forms of diffusers are also disclosed, including one of circular design.
Patent CA-2139553-A1 (CA)
Title: Apparatus and method for making steel alloys in a tundish
Inventor: SOOFI MADJID
IPC: B22D43/00
Filed: 1995-01-04
Abstract: A method and apparatus are provided for making steel alloys directly in a tundish. Base steel enters the tundish from a ladle. An alloying chamber having a plurality of inlets is positioned above a tundish drain.      An alloying material (for example, a wire including one or more alloying ingredients) is fed into the alloying chamber through a feed pipe originating above the liquid level in the tundish. Molten base steel enters the alloying chamber through the inlets and is mixed with the alloying material to make a steel alloy, which exits through the drain. The method and apparatus are especially suitable for making small order quantities of alloy steel of less than one ladle volume.
Patent CA-2139578-A1 (CA)
Title: Heavy metal-oxide glass optical fibers for use in laser medical surgery and process of making
Inventor: TRAN DANH C
IPC: A61B18/20
Filed: 1993-07-02
Abstract: An improved optical fiber for transmitting mid-infrared wavelength laser light in surgical instruments, includes a heavy-metal oxide component, preferably GeO2 doped with heavier cations and anions, is capable of delivering at least three watts of laser power continuously for more than ten minutes, without failure. This glass fiber has an .alpha.(dB/m) at 2.94 µm of 10, preferably less, and can transmit at least 27 % of the IR through a thickness of 30.5 cm.
Patent CA-2140924-A1 (CA)
Title: Bis-staurosporine and k-252a derivatives
Inventor: LEWIS MICHAEL E
IPC: A61K31/407
Filed: 1993-07-26
Abstract: The invention features novel derivatives of K-252a, as well as novel bis-N-substituted derivatives of staurosporine. Also, a method for treating diseased neuronal cells involving the administration of either the novel staurosporine derivatives or specified functional derivatives of K-252a.
Patent CA-2141984-A1 (CA)
Title: Continuous control system for a mining or tunnelling machine
Inventor: SMITH HERBERT A
IPC: E21C35/24
Filed: 1995-02-07
Abstract: A continuous control system for a mining or tunnelling machine having a boom with a motor driven cutting head at one of its ends and a rotatable turret at the other end, the control system comprising angular encoders for continuously measuring the angles of the boom and of the turret and a linear encoder for continuously measuring the linear position of the cutting head, and further having pressure transducers for continuously measuring the pressures of the various hydraulic cylinders or drives used to operate the boom and the turret. It may also have a power transducer for continuously measuring the power input to the motor driving the cutting head to control the RPM of the latter. The signals from the above various measurements are continuously processed by a computer in accordance with a predetermined computer program and a controller is provided which is responsive to the computer and which continuously controls the various parameters so as to cut a preselected profile at a predetermined depth of cut and rate of advance.
Patent CA-2144429-A1 (CA)
Title: A radially self-expanding implantable intraluminal device
Inventor: SCHMITT PETER J
IPC: A61F2/90
Filed: 1993-09-14
Abstract: A radially self-expanding implantable intraluminal device (10) formed from a hollow tubular braid. The infra-luminal device may be used in a variety of medical procedures which require a passageway to be maintained in an open position or which require reinforcement, support or a bypass conduit such as in blood vessels weakened by disease. The infra-luminal device is longitudinally expanded or radially collapsed for ease of insertion into a lumen and upon alignment within the lumen, the intra-luminal device (10) radially self-expands to come into intimate contact with the inner surface of the lumen.
Patent CA-2145063-A1 (CA)
Title: Recombinant viruses displaying a nonviral polypeptide on their external surface
Inventor: RUSSELL STEPHEN J
IPC: C12N15/87
Filed: 1993-09-22
Abstract: We have made retrovirus particles displaying a functional antibody fragment. We fused the gene encoding an antibody fragment directed against a hapten with that encoding the viral envelope protein (Pr80env) of the ecotropic Moloney murine leu-kemia virus. The fusion gene was co-expressed in ecotropic retroviral packaging cells with a retroviral plasmid carrying the neom-ycin phosphotransferase gene (neo), and retroviral particles with specific hapten biding activities were recovered. Furthermore the hapten-binding particles were able to transfer the neo gene and the antibody-envelope fusion gene to mouse fibroblasts. In princi-ple, the display of antibody fragments on the surface of recombinant retroviral particles could be used to target virus to cells for gene delivery, or to retain the virus in target tissues, or for the construction of libraries of viral display packages.
Patent CA-2146390-A1 (CA)
Title: Disposable medical scope sheath
Inventor: COLE ARTHUR F D
IPC: A61B1/005
Filed: 1995-04-05
Abstract: Abstract of the Disclosure A disposable sheath (10) for a medical scope (11) and having a flexible, elongated body portion (13) formed from a translucent plastic material  (15) with a rough-textured interior surface (19) and a flexible, transparent tip portion  (22).   The rough-textured interior surface includes projections (18) that result from a plurality of indentations (17) formed in the exterior surface (16) of the body portion of the sheath.  The translucent plastic material of the body portion is bonded to the transparent tip portion of the sheath by high frequency heat sealing, which is pathogen impermeable.  The plastic materials of the  sheath  are  also  pathogen  impermeable.    In  one embodiment, the tip portion (46) of the sheath (33)  is formed  from  a  flat,  foldable  sheet  (48)  of  plastic material.  The lateral edges (51, 52) of the foldable sheet are heat sealed to each other, and the proximal edges (49, 50) are heat sealed to the distal end (47) of the body portion (35) of the sheath.   The body portion is formed from two strips (36, 37) of plastic material with a shape memory for a flat configuration that are longitudinally heat sealed along the edges (38, 39) thereof.  A stylet (43) is positioned in the sheath for maintaining the sheath in an open condition (42) during handling and storage.
Patent CA-2146832-A1 (CA)
Inventor: MALLART SERGIO
IPC: C07K5/06
Filed: 1995-04-11
Abstract: Composés de formule (I) <IMG> (I) dans laquelle R3 et R4 représentent ensemble le résidu d'un composé dihydroxylé tel que par exemple le butane-2,3-diol, le 2,3-diméthylbutane-2,3-diol ou le (1.alpha.,3.alpha.,5.alpha.)-2,6,6-tri-méthylbicyclo¢3.1.1!heptane-2,3-diol¢(+)-.alpha.-pinanediol! et R5 représente un atome d'hydrogène ou un groupe (C1-C4)alkyle sous forme d'isomères optiques ou géométriques, purs ou sous forme de mélanges, ainsi que leurs sels. Intermédiaires de synthese.
Patent CA-2147531-A1 (CA)
Title: Lampsocket with means to reject incorrectly dimensioned lamps
Inventor: NEWMAN WALTER
IPC: H01R33/22
Filed: 1995-04-21
Abstract: A lampsocket is provided with a body having an extension both of which contain a continuous bore of a first predetermined diameter dimension to prevent the seating and electrical connection of an electrical lamp having a neck dimension in excess of first predetermined dimension to thereby reject inappropriate lamps and only permit the seating and electrical connection of suitable lamps.
Patent CA-2147687-A1 (CA)
Title: Method of treating papermaking fibers for making tissue
Inventor: HERMANS MICHAEL ALAN
IPC: D21H11/00
Filed: 1995-04-24
Abstract: The throughdryability of dewatered, but wet, sheets made from papermaking fibers can be significantly increased by subjecting an aqueous suspension of the fibers at high consistency to elevated temperatures with sufficient working of the fibers.  Such a treatment is particularly effective for improving the efficiency of throughdrying processes used in the manufacture of certain products, such as tissues and paper towels, made from furnishes having a significant amount of secondary or recycled fibers.
Patent CA-2151229-A1 (CA)
Inventor: NOJIMA SHIGERU
IPC: B01D53/86
Filed: 1995-06-07
Abstract: An ammonia decomposition catalyst wherein a first catalyst having a crystalline silicate which is represented by the formula in terms of molar ratio of oxides as dehydrated:      (10.8)R2O.[aM2O3.bM'O.cAl2O3].ySiO2, wherein R denotes an alkaline metal ion and/or hydrogen ion, M denotes a VIII group element, rare earth element, titanium, vanadium, chromium, niobium, antimony or gallium, M' denotes magnesium, calcium, strontium or barium, a0, 20>b0, a+c=1, 3000>y>11 or a specific porous material as a carrier and iridium or a noble metal as an active metal is present together with or covered with a second catalyst having at least one element selected from the group consisting of titanium, vanadium, tungsten and molybdenum, if necessary, as well as a method of using the same.
Patent CA-2156816-A1 (CA)
Title: Flame retardant insulation compositions having enhanced curability
Inventor: BORKE JEFFREY S
IPC: C08L51/06
Filed: 1995-08-23
Abstract: Improved flame retardant compositions suitable for insulating wire and cable products comprised of ethylene-alkoxy saline copolymer, halogenated organic compound, antimony trioxide, silane condensation catalyst and  magnesium hydroxide are provided.  Addionally, antioxidant(s), other mineral fillers and other conventional compounding ingredients may be included in the formulations.  The compositions have good processability and are capable of being cured under ambient conditions to provide products which meet all of the specifications of SAE J-1128 of low tension primary cable.  Wire and cable products comprising a metal conductor coated with from 2 to 100 miles of the flame retardant insulation are also disclosed.
Patent CA-2158136-A1 (CA)
Title: Method and apparatus in a semiconductor circuit
Inventor: JANSSON LARS
IPC: H03K17/0812
Filed: 1995-02-09
Abstract: The present invention relates to the activation and deactivation of a transistor (Q1) in a final stage (10), for instance a push-pull final stage.  The final stage is included in a voltage alternating drive system connected to a load. A current driving buffer circuit (24) in the drive system is connected to the transistor (Q1) and functions to activate and deactivate the transistor, i.e. to switch the transistor on and off, in a manner such as to generate only a low power loss in the transistor, even when the load is inductive. The current driving buffer circuit (24) includes a first inverting circuit (Q3, Q4), a second inverting circuit (Q5, Q6), a current generating circuit (Q7, Q8), and a semiconductor element (Q9). The inverting circuits coact with the current generating circuit (Q7, Q8) to switch off the transistor (Q1), wherein the current generating circuit generates a deactivation current (IDIS) which charges capacitances (CGSQ1, CGDQ1) in the transistor (Q1) very rapidly, so that the voltage (OUTLSB) on an input of the transistor (Q1) will increase to a deactivation level (VCCH). The inverting circuits coact with the semiconductor element (Q9) to activate or switch on the transistor (Q1), wherewith the semiconductor element generates an activation current (ICON) which charges the capacitances (CGSQ1, CGDQ1) in the transistor (Q1), so that the voltage (OUTLSB) on an input of the transistor (Q1) falls to an activation level (VREG).
Patent CA-2160686-A1 (CA)
Title: Formylation Process for Aromatic Aldehydes
Inventor: GODEK DENNIS M
IPC: C07C45/56
Filed: 1994-01-26
Abstract: A novel two-step reaction process for preparing 5-substituted-2-methoxybenzaldehyde compounds is disclosed wherein the substituent group is either isopropyl or trifluoromethoxy. The process involves (1) reacting a corresponding 4-substituted phenol compound with dimethyl carbonate in the presence of a tertiary-amine base to form the corresponding 4-substituted anisole compound, and (2) thereafter subjecting the latter intermediate product obtained in the first step to aromatic C-formylation on the ring with hexamethylenetetramine in the presence of trifluoroacetic acid, followed by hydrolysis, to ultimately yield the desired aldehyde compound. The two aromatic aldehyde compounds so obtained, viz., 2-methoxy-5-trifluoromethoxybenzaldehyde and 2-methoxy-5-isopropylbenzaldehyde, are known to be useful as intermediates that specifically lead to (2S,3S)-cis-3-(2-methoxy-5-trifluoromethoxybenzyl)amino-2-phenylpiperidine and (2S,3S)-cis-2-(diphenylmethyl)-N-[(2-methoxy-5-isopropylphenyl)methyl]-1-azabicyclo[2.2.2.]octane-3-amine, respectively. The latter final products, in turn, are both known to be useful in the field of medicinal chemistry as substance P receptor antagonists.
Patent CA-2161449-A1 (CA)
Title: Method for manufacturing eptfe products
Inventor: ZDRAHALA RICHARD J
IPC: B29C48/10
Filed: 1995-03-09
Abstract: An improved method is provided for extruding ePTFE tube (12) for use in medical applications. A tube (12) of PTFE is extruded, preferably in an extrusion process, using counter-rotated die components (22, 26). The die component (16) is maintained at a constant temperature during processing.   The resulting green tube (12) has enhanced fibrous state formation in a direction perpendicular to the direction of extrusion. The PTFE green tube (12) is then subjected to secondary operations such as stretching and expansion to yield medical product. The ePTFE tube (12) structure is defined by nodes interconnected by elongate fibrils.   Both the nodes and fibrils are substantially randomly tilted with respect to the longitudinal axis of the tube (12). This particular structure yields a tube (12) which exhibits a high degree of radial tear strength useful in medical applications.
Patent CA-2161537-A1 (CA)
Title: Acidising underground reservoirs
Inventor: MOSES VIVIAN
IPC: E21B37/06
Filed: 1994-04-29
Abstract: A method of acidising an underground reservoir comprises a) injecting into the reservoir (i) a substrate for an enzyme, which substrate is capable of being converted into an organic acid by the enzyme, and (ii) the enzyme; and b) allowing the enzyme to catalyse the conversion of the substrate into the acid.
Patent CA-2162512-A1 (CA)
Inventor: SAKAMOTO AKIHIKO
IPC: C03C27/12
Filed: 1995-11-09
Abstract: A fire-protection and safety composite glass panel includes a fireproof glass plate and a film of fluorocarbon resin of a chain molecular structure type.          The film is bonded onto one of opposite side surfaces of the fireproof glass plate by the thermo-compression bonding. The fluorocarbon resin is a copolymer of at least three kinds of monomers.  It may be arranged that another film of the fluorocarbon resin is further bonded onto the other side surface of the fireproof glass plate by the thermo-compression bonding.  Another glass panel may be arranged that a plurality of fireproof glass plates are attached with a film of the foregoing fluorocarbon resin interposed between adjacent glass plates through the thermo-compression bonding.  Those glass panels can be used as glass plates in fire-protective windows and doors.