baber/WOPTO huggingface dataset:
Patent CA-1277440-C (CA)
Title: Compound semiconductor device with laminated channel layer
Inventor: MATSUI YUICHI
IPC: H01L21/285
Filed: 1987-04-24
Granted: 1990-12-04
Abstract: ABSTRACT     A  compound  semiconductor  device  having  a  channel layer which is made of periodically laminated structure of thin-film layers of compound semiconductor substantially being different from each other.  The difference of energy between the conduction band and the valence band of com-pound semiconductor thin-film layers of one side is less than that of the other side thin-film layers, moreover the electron mobility in low electric field application in the thin-film layers of compound semiconductor of one side is greater  than that of  the other  side thin-film layers, besides  the  electron  mobility in  high  electric  field application  in  the  thin-film  layers  of  compound  semi-conductor of one side is less than that of the other side thin-film layers, and/or the impact ionization of valence electron  generated  in  high  electric  field  application takes place earlier than the thin-film layers of compound semiconductor of the other side.  While conduction elec-trons preferentially flow through the thin-film layers of compound semiconductor of one side in low electric field application,  and  conversely,  while  conduction  electron having  substantial  energy  intensified  by  acceleration preferentially flow through other side thin-film layers in high electric field application.
Patent CA-1279442-C (CA)
Title: Dampener for a load bearing arthro-prosthesis
Inventor: SOSTEGNI GIULIANO
IPC: A61F2/00
Filed: 1987-07-08
Granted: 1991-01-29
Abstract: ABSTRACT        A dampener for a load bearing arthro-prosthesis is made up of a cradle with a base zone of spherical shape to be inter-posed between the presser, head and the cotyle of the prosthesis.          The cradle has a stepped cross-section, in the meridian plane, with a thin wall, a first central step rising from the bottom of the cradle and more circumferentially spaced apart steps parallel to and coaxial with the central step and having lesser height than the first step.  In this way, it is possible to obtain, with a non-compressible material, a variable rigidity of the cradle when subjected to loads applied to the prosthesis as well as maximum deformation increment at the lowest values of the load (approx. 100 kg).
Patent CA-1293522-C (CA)
Title: Compact printer having convertible discharge hopper
Inventor: PIATT MICHAEL J
IPC: B41J11/58
Filed: 1987-09-15
Granted: 1991-12-24
Abstract: COMPACT PRINTER HAVING CONVERTIBLE DISCHARGE HOPPER             ABSTRACT A print output station for compact printer having a cut-sheet supply station located in the lower rear of the print housing and a transport platen for feeding successive sheets from the supply station, along a print path extending through a print zone and out a print path egress, includes:  (a) a first wall having an inlet edge located proximate the print path egress for defining an inlet to a cut-sheet hopper zone; and (b) a lid forming an exterior housing portion overlying the first wall and mounted to pivot about an axis spaced from the leading edge to an open position so that the lid interior forms a rearward extension of the first wall means.  The movable lid is constructed to function in the closed-lid position to prevent continuous print media from refeeding.
Patent CA-1326225-C (CA)
Inventor: BUCKSBEE JAMES H
IPC: E01B9/62
Filed: 1987-11-18
Granted: 1994-01-18
Abstract: ABSTRACT     A rail fastener having a rail support plate coated with electrical resistant elastomeric material to protect against electrical current leakage from the rail through the rail support plate is described. The only part of the support plate not coated with the elecgtrical resistant elastomeric material are the serrations of the support plate. The coating of the support plate protects against current leakage from the rail to the support systems.
Patent CA-1316369-C (CA)
Title: Apparatus for testing groups of pressurized cans for leakers
Inventor: RICKARD WILLIAM A
IPC: G01M3/06
Filed: 1988-02-02
Granted: 1993-04-20
Abstract: PATENT                      Case 871210 ABSTRACT OF THE DISCLOSURE         A water bath apparatus for testing pressurized cans of aerosol products in groups for leakers.  A spokeless horizontal cylinder is supported and rotatable on trunnions in a tank partly filled with water.  The cylinder has end rings which ride on sets of trunnions mounted on opposing walls on the tank interior.  Uniformly spaced elongated clamps structurally interconnect the end rings to form the sidewall of the cylinder.  Each clamp after loading carries a group of cans down into the water and then upwardly out of the water for unloading.  A horizontal tube extends through the tank and through the spokeless interior of the cylinder.  An elongated conveyor extends through the top of the tube and the interior of the cylinder.  Each clamp is normally closed so as to retain a group of cans to be tested.  Provision is made to rotate the cylinder in indexing steps so that as each clamp is sequentially indexed to a dwell position over the conveyor it is opened so as to allow the group of already tested cans therein to be conveyed out of the clamp and be replaced by an untested group whereupon the clamp is allowed to close.
Patent CA-1309478-C (CA)
Inventor: COUNSELMAN CHARLES C III
IPC: B64G3/00
Filed: 1988-03-16
Granted: 1992-10-27
Abstract: ABSTRACT     Techniques are disclosed for determining orbital data of space borne vehicles including earth satellites such as those of the NAVSTAR Global Positioning System.  Each of a set of such satellites transmits signals which include carrier waves which may be suppressed, or only implicitly present.  The signals are received from the observable satellites concurrently by means of an antenna at each of at least three ground stations forming a network of baselines.  The stations are arrayed such that the ratio of the maximum to the minimum baseline length is much greater than one.  From the signals received at a station pair forming each baseline a time series of doubly-differenced phase measurement data is formed which is biased by an integer number of cycles of phase.  The data series for different satellite and station pairs are processed together to determine the orbits of the satellites and the doubly-differenced phase biases.  Unique determination of the integer values of at least some of the biases is facilitated by the above noted spatial arrangement of the stations such that the ratio of the maximum to the minimum baseline length is much greater than one.  This integer bias determination enhances the accuracy of the related orbit determination.       Unique determination of the integer values of at least some of the doubly-differenced carrier phase biases may also be facilitated by the use of a plurality of carrier frequencies with the ratio of the maximum to the minimum frequency being much greater than one.
Patent CA-1307516-C (CA)
Title: Process for producing solid catalyst for polymerization of olefins
Inventor: KIOKA MAMORU
IPC: C08F4/64
Filed: 1988-03-29
Granted: 1992-09-15
Abstract: ABSTRACT OF THE DISCLOSURE         A process for producing a solid catalyst for polymerization of olefins, which comprises bringing a solution of an aluminoxane into contact with a suspension of a particulate carrier having supported thereon a compound of a transition metal of Group IVB of the periodic table in a solvent in which the aluminoxane is insoluble or sparingly soluble.  In another aspect, the invention provides a process for producing a solid cata-lyst for polymerization of olefins, which comprises bringing a suspnension of a particulate carrier having supported thereon a compound of a transition metal of Group IVB of the periodic table in a solution of an aluminoxane into contact with a solvent in which the aluminoxane is insoluble or sparingly soluble.
Patent CA-1330630-C (CA)
Title: Process for the preparation of tabular silver chloride emulsions
Inventor: TUFANO THOMAS P
IPC: G03C1/015
Filed: 1988-04-21
Granted: 1994-07-12
Abstract: TITLE            PROCESS FOR THE PREPARATION OF TUBULAR SILVER CHLORIDE EMULSIONS                ABSTRACT OF THE INVENTION    A novel process for the preparation, for example of gelatino silver chloride and silver bromochloride grains with modified tabular crystal habit is described.  These grains are prepared using standard single jet (SJ) or balanced double jet (BDJ) techniques, said preparation occurring in the presence of a modifying amount of an aminoazapyridine as defined and a suitable binder to form well-developed, sensitive tabular elements with a median grain volume in the range of 0.005 to 0.50 µm3.
Patent CA-1293282-C (CA)
Title: Latch and lock assemblies with lift and turn handles
Inventor: WEINERMAN LEE S
IPC: E05B13/10
Filed: 1988-05-09
Granted: 1991-12-17
Abstract: LATCH AND LOCK ASSEMBLIES WITH LIFT AND TURN HANDLES            Abstract Flush  mountable  latches  and  locks  for  industrial cabinets,  tool carts,  electrical equipment enclosures and the like utilize versatile housings of novel configuration together with pivotally nestable and extensible handles that are movable relative to the housing to effect latching and unlatching move-ments of a resilient foot that is movable by the handle between clamped and released engagement with a keeper, and that is mov-able with a latch arm between latched and unlatched positions.          The lock-type embodiment has a locking mechanism that is mounted on the housing to selectively permit and prevent unlatching move-ments of the resilient latch member.  The resulting arrangement provides sturdy latch and lock assemblies that employ a small number of relatively movable parts that can be assembled and serviced with ease.
Patent CA-1301626-C (CA)
Title: Burner system in particular with a high velocity of the burnt gases
Inventor: CASSAGNE JEAN-PIERRE
IPC: F23D14/24
Filed: 1988-06-07
Granted: 1992-05-26
Abstract: ABSTRACT OF THE DISCLOSURE A burner system comprising a central hearth tube defining a combustion chamber for a mixture of gas and air and made from thermomechanical ceramic, a tubular element comprising at its end located towards the gas outlet a radial restriction forming an axial and radial positioning stop for the hearth tube whereas the assembly of the latter to the other component parts of the burner is effected by a spring adapted to produce an axial pressure force under the impact of which the hearth tube is bearing upon said stop through a radial shoulder provided in its reduced portion, the burner providing a high velocity of outflow of the burnt gases.
Patent CA-1336407-C (CA)
Title: Prevention and treatment of retroviral disease
Inventor: SALK JONAS
IPC: C07K16/00
Filed: 1988-06-09
Granted: 1995-07-25
Abstract: The  present  invention  provides  a  non-infectious immunotherapeutic containing retroviral particles devoid of outer  envelope  proteins  or  containing  selected  antigens isolated from a retrovirus.  There is also provided a vaccine effective against HIV.   In one aspect,  the  immunogen  is useful for immunizing an individual previously infected by a retrovirus including HIV,  so as to induce immunoprotective factors protective against progression of the infection.  In another  aspect,  the vaccine  is useful  for vaccinating an individual  not  previously  infected with HIV  in  order  to prevent subsequently acquired infection.   In another aspect, there is provided a method of rendering a viral immunogen non-infectious.   The immunogen may also be used to produce antibodies for passive immunotherapy, alone or in conjunction with active immunotherapy,  in individuals infected with a retrovirus,  including  HIV,  preferably  those  individuals exhibiting  low  levels  of  antibodies  to  retroviral  gene products other than the outer envelope.
Patent CA-1318988-C (CA)
Title: Polysaccharide-based composition and its use
Inventor: SVENSSON SIGFRID
IPC: A61K9/60
Filed: 1988-06-16
Granted: 1993-06-15
Abstract: ABSTRACT       A polysaccharide-based composition, characterized by comprising or essentially consisting of:      at least a first component a) exclulding galactans consti-tuted by a substituted .beta.-1,4-linked glycan which is dissolvable in water of a certain temperature and which has a molecular weight (Mw) of > 5?104 Daltons, preferably > 105 Daltons, particularly >106 Daltons, and at least a second component b), also excluding galactans, constituted by a substituted .beta.-1,4-linked glycan which is more difficult to dissolve than said first component at said tempera-ture, or is agar or a carrageenan;   the use of the composition above as a: a)  means for reducing friction, b)  means for facilitating removal of undesired contamination from surfaces, such as graffiti, scrawl, soot etc., c)  means for preserving moisture, d)  protective surface coverage, e)  packaging material, f)  slow release matrix or coating for drugs;     a body in solid phase having a surface intended for contact with a liquid and for relative movement between surface and liquid, said surface being coated with a solid film essentially consisting of such a composition; and a method for the removal of undesired contamination on a surface.
Patent CA-1335975-C (CA)
Inventor: KOCHANEK WOLFGANG
IPC: C25B1/14
Filed: 1988-08-17
Granted: 1995-06-20
Abstract: Alkali metal nitrates are prepared by supplying the anode space of an electrolysis cell, separated from the cathode space by a perm-selective cation exchange membrane, with alkali metal chloride solu-tion and at the same time supplying the cathode space with a nitric acid/alkali metal nitrate solution whose alkali metal nitrate concentration is not less than 10% by weight and whose HNO3 concentration is of from 0.1 to 10% by weight, and withdrawing from the cathode space a solution whose pH does not exceed 5.
Patent CA-1303883-C (CA)
Inventor: AUSTIN GEORGE K JR
IPC: A61G15/16
Filed: 1988-09-26
Granted: 1992-06-23
Abstract: DENTAL INSTRUMENT DELIVERY SYSTEM                 Abstract of the Disclosure A dental instrument delivery system is provided which includes an articulated retaining arm adjustable in a plurality of directions. The arm is connected to a cable mechanism in the back rest of a dental chair which allows the instruments carried by the arm to remain in a desired position when the back rest is tilted.  Also included is a safety release system which prevents damage to the arm and instruments it carries should they accidentally engage a solid object when the chair and/or back rest is raised or lowered.  After disengagement of the solid object, the arm automatically returns to its original position.
Patent CA-1288284-C (CA)
Title: Compact twin piston pump
Inventor: POWERS RICHARD G
IPC: F04B7/02
Filed: 1988-10-05
Granted: 1991-09-03
Abstract: COMPACT TWIN PISTON PUMP            Abstract of the Disclosure A compact, relatively low cost twin piston pump (20) especially adapted for the pump-ing of foods (e.g. juices, puddings or particu-lates such as stews and chilies) is provided which includes quick detach yoke and clevis assemblies (108, 124, 110, 126) connecting the reciprocable pistons (100, 102) with their associated hydraulic cylinders (116, 118), thereby permitting quick cleanup of the machine (20). A jacking screw plate (136) is used for forward mounting of the piston and cylinder assemblies (84, 86, 116, 118) coupled with the sleeves (42, 44) and associated pistons (100, 102). This permits precise adjust-ment of the working components of the machine, while eliminating expensive bearings and heavy duty framing members. The pump (20) is also provided with a slide plate-type valve (38, 184) for controlling output of product from the pump (20). In one valve embodiment (184) a two-part matallic slide plate assembly (192, 200) is sand-wiched between a pair of apertured nylon plates (186). One of the slide plate parts (200) is of lesser thickness than the primary part (192), so as to permit limited fore-and-aft movement of the part (200) for sealing purposes. A unique hy-draulic system employing a master pressure reduc-ing valve (222) and a slaved pressure reducing valve (224) is employed for creating a pressure differential  across the part (200) in order to bias the same for sealing purposes.
Patent CA-1326367-C (CA)
Title: Amelioration de la trempe du verre
Inventor: D IRIBARNE BENOIT
IPC: C03B35/20
Filed: 1988-10-13
Granted: 1994-01-25
Abstract: PRÉCIS DE LA DIVULGATION L'invention concerne essentiellement la trempe à l'air, éventuellement associée au bombage de plaques de verre. Elle propose un revêtement comportant un tissu métallique et présentant une conductivité thermique inférieure à 3 et de préférence inférieure à 0,2 W.m-1.K-1. L'invention s'applique plus particulièrement au revêtement de cadres destinés à porter des plaques de verre pendant leur trempe, et/ou leur bombage et/ou leur transport.
Patent CA-1329966-C (CA)
Inventor: MAGYAR JOHN C
IPC: C09C1/36
Filed: 1988-10-31
Granted: 1994-06-07
Abstract: Process for Preparing Titanium Dioxide Abstract An improved method for preparing a rutile titanium dioxide pigment of uniform particle size wherein the pig-ment is formed by reaction of a mixture of an oxidizing gas and a titanium halide in the vapor phase at elevated temperatures in the presence of a metal ion containing compound.  The improvement comprises introducing the metal ion containing compound into a vapor phase oxidation reactor containing the reacting mixture in at least two separate and discrete increments.  The first increment is introduced into the reactor at a point prior to reaction of said mixture having occurred while the second increment is introduced into the reactor at a point wherein at least 20 weight percent of the total titanium halide reactant has been converted to the desired titanium dioxide pigment.
Patent CA-1309942-C (CA)
Title: Method of construction laminated panels
Inventor: MASON HOWARD C
IPC: B32B21/13
Filed: 1988-11-17
Granted: 1992-11-10
Abstract: METHOD OF CONSTRUCTING LAMINATED PANELS                   Abstract of the Disclosure Method of constructing a laminated panel which used veneer pieces of a standard and uniform size.  The width of the veneer pieces is a whole number divisor of the length of the pieces.  In a panel assembly, the number of veneer pieces in a layer with grain extending across the grain of an adjacent layer is equal to the whole number divisor determining the width of a piece.
Patent CA-1308331-C (CA)
Title: Pigment dispersing agent
Inventor: YAMAMOTO TOSHIO
IPC: C09D7/45
Filed: 1988-11-30
Granted: 1992-10-06
Abstract: PIGMENT DISPERSING AGENT                 Abstract of the Disclosure The invention provides a pigment dispersing agent being a product obtained by reacting a component A of an amine compound having one or more active hydrogen atom per one molecule and a weight average molecular weight of 60~30,000 with at least one component B represented by the following general formula (I), (II) or (III) :                            (I)                 (II)             (III) [wherein R1 is an alkyl group having a carbon number of 1~20 or a residue of aromatic monocarboxylic acid, R2 is a phenyl group, an alkyl group having a carbon number of 5~19, -CH2-O-?-R6 group (R6 is an alkyl group or an aromatic group having a carbon number of 3~17) or -CH2-O-R7 group (R7 is an alkyl group or an aromatic group having a carbon number of 4~18), R3 is a residue of acid anhydride having a carbon number of 2~6, R4 is an alkylene group having a carbon number of 1~7, R5 is a residue of saturated aliphatic, alicyclic or aromatic monoalcohol having a carbon number of 1~18, X is a residue of saturated aliphatic alicyclic or aromatic diisocyanate having a carbon number of 6~20, each of n, e and p is an integer of 1~200, and m is an integer of 0~100 provided that 0?m/n, m/?, m/p?0.5], and a pigment dispersing agent being a product obtained by reacting the above reaction product with a component C of a polyisocyanate compound having two or more isocyanate groups.
Patent CA-1299115-C (CA)
Title: Clothes dryer with flexible exhaust duct system
Inventor: FOCO KEITH E
IPC: F16L11/14
Filed: 1988-12-19
Granted: 1992-04-21
Abstract: ABSTRACT OF THE DISCLOSURE     A flexible exhaust ducting system is provided for a dryer wherein the dryer has more than one opening through its cabinet panels for an exhaust outlet to accomodate differing installation configurations.  The ducting system includes a flexible metal tubing which is radially deformed into contact with rigid metallic end pipes to provide a trouble free joint.          The end pipes are secured to the cabinet bottom panel at an end connected to the blower and to the panel through which the conduit exits the cabinet at the other end to prevent accidental dislodging of the conduit.
Patent CA-1312393-C (CA)
Title: Method of tiling a figure in graphics rendering system
Inventor: KELLEHER BRIAN
IPC: G06T1/60
Filed: 1988-12-22
Granted: 1993-01-05
Abstract: ABSTRACT OF THE INVENTION     Method  for  drawing  a  convex  geometric  figure  to framebuffer  storage  sequentially  addressable  as  a plurality  of  update  arrays  of  determined  origins which tile the framebuffer.  An array comprises pixel storage sites,  each specifiable by an offset from array origin, and concurrently updatable.  A figure is  specified  as  a  set  of  directed  lines,  whose segments between mutual  intersections comprise the figure  boundary,  perambulating  the  boundary  in  a single sense.     The figure is tiled by a subset of the update arrays.            A first array is accessed.   Tests are performed to find whether the figure extends to arrays above or below the accessed array; if so the array address is stored and marked for either or both extensions.  In one embodiment,  a  test  is  performed  for  left extension,  and  the  steps  are  repeated  until  no further left extension is found;  returning to the initial  array,  the  steps  are  repeated  for  right extension to complete the horizontal subset.   The array marked for either up or down extension is next accessed and the steps are repeated with respect to the  indicated  vertically  adjacent  array  until  no further  extension  is  found  in  that  vertical direction; the  steps  are  repeated  for  the  other vertical direction.  The figure has been tiled.     The  extension  test  tests,  with  respect  to  the directed lines and a pair of sample pixels adjacent to the  questionable  array,  for sidedness  of each sample pixel with respect to each line.
Patent CA-1335732-C (CA)
Title: Drilling rig
Inventor: RICHARDSON ALLAN S
IPC: E21B3/02
Filed: 1989-02-08
Granted: 1995-05-30
Abstract: The present invention discloses means to construct or convert drilling rigs in which the rotary table and kelly are replaced by a top drive rotating mechanism.  Further means is provided to restrain the reactionary rotational forces induced by the top drive without applying such additional forces to the structure of the mast.
Patent CA-1339184-C (CA)
Title: Ceramic shell molds and cores for casting of reactive metals
Inventor: FEAGIN ROY C
IPC: C04B35/505
Filed: 1989-04-27
Granted: 1997-07-29
Abstract: Mold coatings that are relatively unreactive with titanium and titanium alloys during casting are prepared from yttria slurries, which may contain other refractory materials, an acid and an inert organic solvent.
Patent CA-1340631-C (CA)
Title: N- (5,6,7,8-tetrahydropyrido [2,3-d] pyrimidin-6-yl-alkanoyl)-glutamic acid derivatives
Inventor: SHIH CHUAN
IPC: A61K31/519
Filed: 1989-05-17
Granted: 1999-07-06
Abstract: N-(5,6,7,8-Tetrahydropyrido[2,3-d]pyrimidin-6-yl-alkanoyl)-glutamic acid derivatives are antineoplastic agents which are prepared by removal of amino and/or carboxylic protecting agent. A typical embodiment is N-[5-(2-[2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl]ethyl)thien-2-yl-carbonyl]-L-glutamic acid.