baber/WOPTO huggingface dataset:
Patent CA-2205300-A1 (CA)
Title: Synthesis of bis(2,2-dinitropropyl)acetal (bdnpa)
Inventor: HAMILTON R SCOTT
IPC: C07C205/29
Filed: 1995-09-08
Abstract: A nonsolvent process of synthesizing bis(2,2-dinitropropyl)acetal (BDNPA) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with an acetaldehyde source in the presence of an acid catalyst, such as a Lewis acid catalyst or protic acid catalyst. To inhibit byproduct formation, the reaction temperature is maintained from about -30 ·C to 30 ·C.  Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide solution. The hydroxide concentration should be sufficient to neutralize any acid formed during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble by products in the reaction solution. The BDNPA product is extracted with methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPA product. The resulting yield is at least 50 % based on the starting quantity of 2,2-dinitropropanol.
Patent CA-2205658-A1 (CA)
Title: Biodegradable absorbent pads and method and apparatus for making
Inventor: GERSTENBERGER ROLAND W
IPC: A61F13/20
Filed: 1995-11-24
Abstract: A biodegradable feminine hygienic interlabia pad (12) which includes a biodegradable inner absorbent sliver (13) made of cotton or rayon and a biodegradable outer cover (15, 34) also made of cotton or rayon. The edges (78, 80) of the outer cover (15, 34) are sewn together to form a hollow cylinder. Also disclosed are a method and an apparatus for manufacturing the pads (12). A rope (16) of absorbent material and a web of the outer covering (34) are brought together in a die (26). The die (26) in the form of a hollow tube (50) and a tapered guide (56) which causes the outer covering to enclose the absorbent material (16) with the seam for the outer covering (34) being on the inside of the pad (12). The die (26) includes an opening (66, 76) for exposing the adjacent edges of the web (34) so that the edges (78, 80) may be sewn together. Also adjacent panels (86, 88) are formed by sewing the pad (12) itself.
Patent CA-2205848-A1 (CA)
Inventor: GUTMAN GUSTAV
IPC: C09J7/38
Filed: 1995-11-08
Abstract: A water-resistant, anti-static pressure-sensitive adhesive tape suitable for use as a wafer dicing tape comprising a flexible substrate having opposing surfaces, at least one surface bearing thereon a removable, aziridinecrosslinked microparticulate adhesive comprised of microparticles having a surface bearing thereon an ionic conductive material formed from a polymer electrolyte base polymer, and at least one ionic salt selected from the group consisting of salts of alkali metals and salts of alkaline earth metals, wherein said microparticles have an average diameter of at least 1 micrometer, said adhesive having an adhesion to steel of from about 0.5 Newtons/100 mm (N/100 mm) to about 10 N/100 mm.
Patent CA-2207969-A1 (CA)
Title: Acoustic touch position sensor using a low-loss transparent substrate
Inventor: KENT JOEL
IPC: H03K17/96
Filed: 1996-01-24
Abstract: A touch position sensor or "touchscreen" (16) utilizes acoustic waves within a sensor substrate (32) to determine the position of touch. The substrate (32) is made of a transparent material, such as borosilicate or barium glass, which exhibits substantially less acoustic absorbtion than soda-lime glass.
Patent CA-2207993-A1 (CA)
Inventor: SAGE JEAN-MARC
IPC: C07C17/395
Filed: 1997-06-05
Abstract: Pour éliminer les impuretés oléfiniques présentes dans un hydrofluorocarbure tel que le pentafluoroéthane (R-125), on traite l'hydrofluorocarbure impur par de l'oxygène en l'absence de catalyseur ou de charbon actif. Le procédé convient bien à la purification des fluoroéthanes et, plus particulièrement, à celle du pentafluoroéthane
Patent CA-2208523-A1 (CA)
Inventor: GOLDWATER MARK H
IPC: G06F17/21
Filed: 1996-09-12
Abstract: A computer system can translate original font descriptions, often from text contained on one computer, into new font descriptions which use different outline segmentation, and then install the new font descriptions into a computer operating system, often on a second computer, so operating system calls can be used to render the text. The system can send a first message over a network to request a text, and a second message to request a set of font descriptions for rendering the text. Preferably the text includes an identifier which can be used in the second message to identify the particular font descriptions desired. The system can receive a body of text and an old set of font resources and can derive a customized new set of font resource from the old set based on the particular character-font shapes in the text, eliminating multiple font descriptions for the same character-font shape and font descriptions for character-font shapes which do no currently occur in the text. The system can also render the character font shapes of a text from a plurality of portable font resources, each of which can have different characters from the same fonts. Such systems can receive and cache separate portable font resources.
Patent CA-2208675-A1 (CA)
Title: Process for the manufacture of granular detergent compositions comprising nonionic surfactant
Inventor: DONOGHUE SCOTT JOHN
IPC: C11D17/00
Filed: 1996-01-05
Abstract: The invention relates to a process for the manufacture of detergent compositions or components from a surfactant paste which is substantially in the solid phase at temperatures of 25 ~C and below comprising the steps of:  (i) mixing the surfactant paste at a temperature above its softening point, the surfactant paste comprising at least 50 % by weight of nonionic surfactant; (ii) forming the molten surfactant paste into drops on a cooling surface; (iii) forming solid pastilles by cooling the drops of molten surfactant paste; and (iv) removing solidified pastilles from the cooling surface. The invention also relates to pastillated granulated detergent compositions or components made by the process.
Patent CA-2208688-A1 (CA)
Title: Microstrip patch antennas using very thin conductors
Inventor: SKOGLAND TIMOTHY S
IPC: H01Q13/08
Filed: 1995-12-15
Abstract: A microstrip patch antenna has a first conductive layer (4) adjacent a dielectric substrate (6). The first conductive layer (4) has a thickness of less than one skin depth of the material of the first conductive layer. A second conductive layer (8) acts as the ground plane for the first conductive layer. A feed network which may comprise a second dielectric substrate (10), microstrip feedline (12) and aperture (14) aligned with the first conductive layer feeds the radiating patch of the first conductive layer.
Patent CA-2208881-A1 (CA)
Inventor: LAPATOVICH WALTER P
IPC: H01J65/04
Filed: 1997-06-24
Abstract: An electrodeless lamp assembly includes an electrodeless lamp capsule, a substrate having top and bottom surfaces and an edge, an applicator for coupling electrical energy to the lamp capsule and a refractory support block. The support block includes a top wall having a recess and a side wall having a groove. The lamp capsule is affixed in the recess, and the edge of the substrate is secured in the groove. The lamp capsule is supported above the substrate by the support block.      During assembly, the support block may be moved along the edge of the substrate, and the lamp capsule may be moved with respect to the support block to adjust the position of the lamp capsule.
Patent CA-2210142-A1 (CA)
Title: Reusable sensor accessory containing a conformable spring activated rubber sleeved clip
Inventor: GRONVALL DANIEL
IPC: A61B5/1455
Filed: 1996-11-13
Abstract: A reusable accessory for a sensor (201) (such as a pulse oximeter (200) or a plethysmograph) that allows close conformance between the sensor heads (205, 206) and the patient tissue to be measured. The accessory thus provides both a key advantage of adherent sensors (i.e. close tissue-sensor conformance) and a key advantage of rigid structure sensors (reusability). The accessory provides a structure for mounting the sensor heads (205, 206), whereby the sensor heads (205, 206) can pivot about their respective points of attachment to the mounting structure within first and second voids, respectively, thereby allowing the sensors to closely conform to the patient tissue. In one embodiment, the mounting structure includes a spring (209, 210) containing two coils, and two frames surrounding the voids and connected to the coils, each frame having an end shaped to fit a portion of a sensor head (205, 206) and onto which a sensor head (205, 206) is mounted. Another aspect of the present invention concerns the use of flexible sleeves (204a, 204b) to cover the sensor heads (205, 206) when mounted on a reusable accessory. The sleeves (204a, 204b) can be replaced or cleaned between patient applications, thereby reducing the risk of cross contamination between patients, and reduce the amount of shunted light. Yet another aspect of the present invention involves sensory accessories providing light shields that reduce shunting for non-flat site applications and yet do not interfere with sensor-tissue conformance in flat site applications.
Patent CA-2213650-A1 (CA)
Inventor: MORI HIDEFUMI
IPC: F24J3/00
Filed: 1997-08-21
Abstract: A viscous fluid type heat generator including a housing assembly in which a fluid-tight heat generating chamber confining therein a viscous fluid to which a shearing action is applied by a disc-like rotor element rotated by a drive shaft, and having inner wall surfaces confronting outer surfaces of the rotor element, the inner wall surfaces of the fluid-tight heat generating chamber and the outer faces of the rotor element defining a gap in which the viscous fluid is held, the rotor element being provided with one or more through-holes formed in an outer peripheral portion and a radially inner portion thereof with respect to the axis of rotation of the rotor element so that the through-holes cooperate with one or more non-circumferentially extending elongate indentations provided in the inner wall surfaces of the fluid-tight heat generating chamber during the rotation of the rotor element to expand a heat generating region formed by the gap.  The expansion of the heat generating region formed by the gap increases a restraint acting against movement of the viscous fluid caused by the rotation of the rotor element so as to increase friction and a shearing force acting on the viscous fluid, and heat generation by the viscous fluid is increased.
Patent CA-2220814-A1 (CA)
Title: A mechanical seal
Inventor: FONDELIUS JOHAN
IPC: F16J15/00
Filed: 1997-11-13
Abstract: The invention concerns a mechanical face seal being a part of a seal arrangementfor a submersible machine such as a pump or a mixer.   In order to secure that liquid that may have penetrated the seal adjacent the driving unit of the machine to cause damage, the seal is designed as a pumping seal which immediately returns said liquid.
Patent CA-2222660-A1 (CA)
Title: Battered and breaded food compositions using calcium pectins
Inventor: HIGGINS CAMILLE
IPC: A23L13/50
Filed: 1996-05-30
Abstract: A method and composition for preparing battered and breaded food compositions which resist absorbing oil during deep fat frying. The breading composition is prepared by enriching the breading formulation with calcium. This is accomplished by either dry blending, spray drying or agglomerating (e.g., spray coating or application with subsequent drying), by baking the calcium source into the bread crumb or any combination of the above. The battered and breaded food composition is then treated, with a solution of calcium reactive pectin. The calcium-pectin coating functions to significantly impede the absorption and adsorption of frying oil, increases the moisture content, the crispness and heat lamp stability of the food composition. Alternatively, the food may first be treated with the calcium reactive pectin and then the calcium source, depending upon the circumstances of use.
Patent CA-2223870-A1 (CA)
Inventor: JANI WILLIAM
IPC: E21B23/01
Filed: 1998-01-15
Abstract: The present invention is a surge anchor mechanism for a downhole assembly for a well bore. The mechanism includes an upper housing having a downhole end having a frustoconical shape with radially extending sloped surfaces and a lower housing having a frustoconical shoulder with radially extending sloped surfaces. The lower housing is telescopingly received into the upper housing and incorporates a spring to allow the lower housing to move independently of the upper housing. The sloped surfaces of the upper and lower housings define a recess. The mechanism further includes slip members biasedly mounted on the lower housing in the recess and having complementary sloped surfaces corresponding to sloped surfaces on the upper and lower housings.
Patent CA-2224400-A1 (CA)
Title: Wood wall structure
Inventor: VAROGLU EROL
IPC: E04H9/02
Filed: 1997-12-10
Abstract: A wood wall structure has standard components arranged in such a way that strength and ductile capacity exceeds those in current standard wall arrangements. The structure has a top plate and a bottom plate that are substantially the same, each plate having a groove along the center face, a central sheath is positioned between the top and bottom plates fitting into each groove.      Pairs of vertical framing elements extend between the top and bottom plates with the central sheath sandwiched therebetween and attachments between the pairs of framing elements retain the central sheath in position.
Patent CA-2224535-A1 (CA)
Inventor: NOVAK EGON
IPC: A61K31/575
Filed: 1997-12-09
Abstract: Liquefaction of biological membranes is achieved by administering to an animal aphytosterol composition.
Patent CA-2225039-A1 (CA)
Title: Reflector lamp
Inventor: STARK ROLAND
IPC: H01K1/46
Filed: 1997-04-14
Abstract: A reflector lamp may be made with a reflector and base holding a hermetically sealed bulb. The bulb encloses a filling and a light source, the light source being a high voltage or medium voltage light source in which an operating voltage of at least 80 volts is present. The reflector consists of a basic body with a reflector contour and a neck part attached to a rear portion of the basic body, and a base which is joined to the neck part and which has at least two metallic contact pins with cylindrical seals on an end farthest from the bulb. A current feeder system makes an electrical lead available for use by the light source. The base is formed completely from the same material as the neck part and as an integral part directly on the neck part of the reflector.
Patent CA-2225359-A1 (CA)
Title: Apparatus for single file transporting of bottles and molded articles
Inventor: SCHINDEL HUGO
IPC: B65G47/14
Filed: 1997-12-19
Abstract: Apparatus for single file transporting of bottles and molded articles from a mass of initially disposed horizontally and standing bottles and molded articles includes a receiving container made of dimensionally stable material, with the interior space of this container being open at the top and receiving a molded article in the horizontal position.  Each receiving container removes an individual article from the mass of molded articles with the help of a transporting unit , and the molded articles and receiving container are together received by a processing machine.
Patent CA-2226077-A1 (CA)
Inventor: MYREN HARRY INGEMAR
IPC: D21F11/14
Filed: 1996-05-30
Abstract: L'invention concerne une machine à papier pour fabriquer une bande de papier crêpe souple, comprenant une extrémité humide (1) ayant au moins une toile de formation (4) pour former et supporter une bande (7) et une section de séchage (2) dotée d'une machine à sécher (13) à flux traversant, un cylindre sécheur (17) et une courroie perforée (19) venant autour du cylindre sécheur à flux traversant de la machine à sécher et un rouleau de transfert (21) au niveau du cylindre sécheur, la bande traversant la machine à sécher à flux traversant étant exposée à de l'air de séchage après son transfert de la toile de formation. Selon l'invention, la courroie (19) et la bande (7) vont de la machine à sécher (13) à flux traversant au cylindre sécheur (17) sans moyens mécaniques qui comprimeraient la bande, la surface de cette dernière qui est exposée dans cette section à l'air de séchage étant opposée à la bande et ne venant pas en contact avec de tels moyens jusqu'au cylindre sécheur.
Patent CA-2228333-A1 (CA)
Title: Thermoelectric product and method
Inventor: MCKINLEY WILLIAM EARL
IPC: G01K7/13
Filed: 1998-01-29
Abstract: A thermoelectric cold junction compensator connector module, for use with a thermoelectric device such as a thermistor, thermocouple, or resistance-temperature device, has within a housing a cold junction compensator circuit which has means for linearization of voltage output of the circuit relative to input to the circuit. Preferably the circuit also includes potentiometer means for adjustment of at least one parameter of the circuit, and means for adjustment of its voltage output to correspond to degrees Centigrade and degrees Fahrenheit. In a preferred form there are included within the housing a pair of input terminals shielded by ferrite material against stray electromagnetic induction signals, a printed circuit board which comprises a cold junction compensation circuit, a signal linearization circuit, a converter/amplifier circuit, and a circuit for selectively providing a degree Centigrade and degree Fahrenheit output, a battery power supply, and a battery status indicator with means for bringing it into and out of operation, a plurality of potentiometers for preliminary setting up of the circuits, an on-off switching means for the powered circuits, and output terminal means for connection to, for example, a voltmeter or a voltage recording device. The compact body may have a base portion on which the circuits and other items are mounted, and one or more removable cover portions securable on the base portion. Further, a thermocouple voltage-to-analog connector is in the form of a compact hand-held module which contains all the components and power supplies for converting an input of thermocouple output voltage to a linear and cold-junction-compensated analog output. A particularly advantageous feature is that an on-board analog-to-digital converter only calculates and provides the linearity correction, necessary for the specific thermocouple at a specific temperature, in the form of a pulse width modulation signal output, so that about 95 % of the analog output is derived from the output of a thermocouple amplifier and temperature sensor, and only 5 % of the remaining signal is derived from the on-board micro-processor.
Patent CA-2228414-A1 (CA)
Title: Bedding attachment and containment system
Inventor: SCHWARTZ JACK
IPC: A47C21/02
Filed: 1998-01-30
Abstract: A  bedding attachment device for detachably securing  bedding  to  a  mattress  having  an  upper surface comprises a number of discs  adapted to be secured with connection means at corners of the upper surface of the mattress, the discs being capable of limited  displacement  away  from  the  upper  surface outwardly of the connection means such that bedding can be inserted at corners thereof between the discs and  the  upper  surface  of  the  mattress  thereby detachably holding the bedding to the mattress. The bedding attachment device may also comprise a skirt extending around the mattress, the skirt including an elasticized band  for  detachable  attachment  thereof against  peripheral  sides  of  the  mattress  thereby allowing  for bedding  to be  tucked  in between  the skirt  and  the  mattress.    A  mattress  containment system for retaining in position vertically stacked mattresses located between head and foot containment mattress blocks comprises a flap provided on each of the head and foot blocks and having attachment means for detachably fastening it to an upper surface of an uppermost of the mattresses. The mattress containment system may include an elasticized belt which extends around the mattresses and the head and foot blocks in a tight manner.
Patent CA-2228922-A1 (CA)
Title: Apparatus for transmitting a movement and/or force
Inventor: WUESTHOLZ BERND
IPC: F16C1/12
Filed: 1998-02-06
Abstract: An apparatus for transmitting a movement and/or a force comprises a guide means and a transmission element mounted displaceably in the guide means in a condition of guiding engagement therein in positively locking relationship. The movement and/or force is transmitted along a guide  length  determined  by the  ends  of the  guide means.  The guide length is adapted to be variable between the ends of the guide means by release of the guiding engagement along a given portion of the guide length.
Patent CA-2229121-A1 (CA)
Inventor: TOWNLEY GLENN C
IPC: D21F1/00
Filed: 1998-03-11
Abstract: A multi-layer papermaking fabric having at least two sets of offset seam loops at each end of the fabric.  The respective seam loop sets are joined to render the fabric endless.
Patent CA-2229569-A1 (CA)
Inventor: CAI ZHIYA
IPC: G06F17/30
Filed: 1996-08-15
Abstract: Disclosed is a design tool (50) including a custom application (51) for creating forms and reports based on objects in an object model in order to store and retrieve data from a relational database (52). The forms also enable queries to be performed on data stored in the relational database. The design tool runs on a computer (62) that includes a processing unit (63) controlled by an operating system (64).
Patent CA-2232080-A1 (CA)
Inventor: GALLAGHER MICHAEL JOHN
IPC: H01F27/29
Filed: 1998-03-13
Abstract: There is provided a headerless magnetics package for surface mount assembly onto a circuit substrate. The magnetic package has a ferromagnetic core and winding turns for the ferromagnetic core. The winding turns are formed from electrically conductive plates that are disposed in a stacked arrangement surrounding at least a portion of the core. The conductive plates each provide two connections for the supply of electrical current to the winding turns. The magnetics package further provides a number of electrical connectors.      Each connector is attached to predetermined conductive plates of the package at corresponding connections of the package.      Each of the connectors is directly mountable onto the circuit substrate to thereby form an electrically conductive pass beginning at the circuit substrate, then passing through the conductive plates and returning to the circuit substrate.
Patent CA-2234793-A1 (CA)
Inventor: SHARRAH RAYMOND
IPC: F21L4/04
Filed: 1996-08-19
Abstract: A convertible flashlight (10) is provided having a head portion (12, 14) containing a lamp. A pair of divergent rear surfaces (15a, 15b) are formed on the head portion (12, 14) and a pair of rearwardly-extending arms (16a, 16b) having complementary forward surfaces are joined to the rear surfaces of the head portion by axial-pivotal connections. In a first configuration, the arms extend rearwardly in parallel to provide a handle for configuring the flashlight in a hand-held configuration. When the arms (16a, 16b) are rotated about the axial-pivotal connections to the head portion (12, 14), the distal ends of the arms are moved apart so that the convertible flashlight assumes a second configuration to facilitate mounting the convertible flashlight to the head of the user.
Patent CA-2235244-A1 (CA)
Inventor: CLARK REGINALD WAYNE
IPC: H01R13/639
Filed: 1996-10-16
Abstract: A method of deactivating microorganisms in food products, packaging material, water, air, and other products involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad-spectrum polychromatic light. In variations of this embodiment, the light has an intensity of at least 0.1 J/cm2, the pulse duration is from between about 10 nanoseconds and 10 milliseconds, and/or at least 50 % of the at least one pulse's energy is transmitted in light having wavelength from between about 170 and 2600 nanometers. Advantageously, the microorganisms may be Cryptosporidium parvum oocysts, Bacillus pumilus spores or poliovirus.