baber/WOPTO huggingface dataset:
Patent CA-2052454-C (CA)
Title: Laser driver with plural feedback loops
Inventor: SANTARELLI BRYAN A
IPC: H01S5/0683
Filed: 1991-09-30
Granted: 1995-01-17
Abstract: A laser driver circuit applies pulses of current to a laser diode to activate the diode to emit pulses of radiation suitable for operation of a laser printer. A field-effect transistor (FET) is serially connected with the laser diode and with a feedback resistor for applying the current pulses, the feedback resistor serving as a source of a feedback signal indicative of the magnitude of current flow. A photodetector senses radiation outputted by the laser diode and emits an optical feedback signal representative of radiated power of the laser diode. A combiner circuit, responsive to an input digital command signal, combines the current feedback signal and the optical feedback signal with the command signal to generate a drive signal for activating the FET. The combiner circuit includes an input section in which a current source powers a differential amplifier operating in a switching mode in response to the command signal a driver section wherein a current source powers a differential amplifier operating in a linear mode and connecting between the input section and the FET, and a threshold section connected to the input section for establishing a threshold current level in the drive signal which activates the FET.
Patent CA-2055237-C (CA)
Title: Spraying device
Inventor: NOAKES TIMOTHY J
IPC: B05B5/025
Filed: 1991-11-08
Granted: 2002-11-05
Abstract: An electrostatic spraying device comprises a housing (10) incorporating a cartridge (16) containing liquid, such as a fragrance-producing oil, which is to be sprayed via a vertically disposed capillary structure (22), electrical potential being applied to the liquid so that the liquid is drawn across the end face of the capillary structure and is sprayed as a plurality of ligaments which break up into droplets.
Patent CA-2062436-C (CA)
Title: Electrostatic spraying of liquids
Inventor: NOAKES TIMOTHY JAMES
IPC: B05B5/025
Filed: 1992-03-06
Granted: 2001-08-14
Abstract: An electrostatic spraying apparatus is in the form of a device suitable for hand held use. The device uses a high voltage generator of the rectified pulsed type and includes an earth return path which is completed via the operator through a contact (38) associated with the hand grip (4) of the device. Resistance (36), typically of the order of 50 megohm, suppresses pulsed electrical sensations that may be experienced by the operator in the event that the nozzle (12) is contacted with an earthed object, and the nozzle (12) is designed so that the liquid therein presents. by virtue of the length and cross-sectional area of a liquid conducting passage(s) in the nozzle, a high resistance between the voltage generator (26) and the nozzle thereby reducing the energy that can be drawn to earth by electrical discharge.
Patent CA-2062526-C (CA)
Title: Subscriber line interface circuit for serving isdn subscribers using echo cancellers and pots subscribers
Inventor: ARAI MASANOBU
IPC: H04B1/58
Filed: 1992-03-09
Granted: 1996-01-16
Abstract: A subscriber line interface circuit includes a switched hybrid circuit operable during a POTS mode when the associated subscriber is using a POTS station and in an ISDN mode when the subscriber is using an ISDN station. The hybrid circuit includes a first amplifier circuit for coupling a signal at the two-wire port thereof to its four-wire transmit port, and a second amplifier circuit for coupling a signal at the four-wire receive port of the hybrid to the two-wire port. A high termination impedance is synthesized at the two-wire port during the POTS mode and a low termination impedance at the two-wire port during the ISDN mode. The signal from the four-wire transmit port is converted to a digital signal and applied to a digital signal processor which is configured differently according to DSP running programs respectively stored in first and second memories for operations during the POTS and ISDN modes. The DSP processes signals received from the hybrid's four-wire transmit port as well as from the telephone switching system according to the program supplied from the first or second memory and applies the process signals to the switching system and the four-wire receive port.
Patent CA-2063597-C (CA)
Title: Compositions and methods for repairing and sealing rubber dams and isolating tissue
Inventor: FISCHER DAN E
IPC: A61K6/896
Filed: 1990-05-10
Granted: 1995-07-04
Abstract: A sealing or barrier forming putty caulk (12) of the present invention contains polymethylsiloxane to provide adhesive and hydrophobic characteristic for use in the repair of rubber and other dental dams (10) The sealing or barrier forming putty caulk (12) also contains propylene glycol in sufficient amounts to provide the composition with hydrophilic properties so the compound will adhere to wet, as well as dry, surfaces or tissue. The sealing or barrier forming composition (12) also contains car-boxymethylcellulous to assure that the compound has a homogeneous blend of the ingredients.  The sealing or barrier forming composition (12) also contains inert fillers and possibly trace amount of a surfactant.  The methods of using the sealing or barrier forming compound (12) of the present invention include delivering the compound efficiently and accurately to the subject region through a syringe (18).
Patent CA-2069956-C (CA)
Title: Process for the production of 17-oxosteroids
Inventor: WEBER ALFRED
IPC: C12R1/33
Filed: 1991-08-01
Granted: 2001-05-08
Abstract: A process for the production of 17-oxosteroids by fermentative oxidation of 17.beta.-hydroxy steroids is described, which is characterized in that for the fermentation, a bacterial culture of the species Mycobacterium spec. NRRL B-3805, Mycobacterium spec. NRRL B-3683, Mycobacterium phlei NRRL B-8154 or Mycobacterium fortuitum NRRL B-8153 is used.
Patent CA-2076150-C (CA)
Title: Data display radio pager
Inventor: MOTOHASHI TERUYUKI
IPC: H04W88/02
Filed: 1992-08-14
Granted: 1999-03-16
Abstract: A data display radio pager for producing, on receiving a signal including a preassigned address number, an alert and displaying a message also included in the signal on a display. When the radio pager receives a signal including a message with time data, it again alerts the user of the radio pager and displays the message on the display at a particular time based on the time data contained in the message.
Patent CA-2082155-C (CA)
Inventor: DAYALU KRISHNASWAMY I
IPC: C12R1/92
Filed: 1991-05-24
Granted: 2008-04-15
Abstract: The invention provides compositions useful for vaccinating pigs against Mycoplasma hyopneumoniae. The compositions comprise inactivated M. hyopneumoniae organisms in a pharmaceutically acceptable medium, the organisms being present in an amount sufficient to induce an immunological response in pigs which is protective against challenge by M. hyopneumoniae.
Patent CA-2085442-C (CA)
Title: Mobile log-in capability featuring fixed physical translations and portable logical translations
Inventor: HASSLER KERRY WAYNE
IPC: H04M3/523
Filed: 1992-12-15
Granted: 1996-09-17
Abstract: In a telecommunications system that includes a plurality of user terminals and terminal translations that define attributes of the individual terminals, shared use of the terminals by a plurality of users or use by a user of different ones of the terminals at different times is facilitated by associating each terminal's physical translations, comprising for each terminal those attributes that are independent of the users of the terminal and including a physical extension number, with the corresponding terminals, associating each terminal's default terminal translations, comprising for each terminal those attributes that are dependent on the users of the terminal and including a call-coverage path, with the corresponding terminals, and associating each user's logical translations, comprising for each user those attributes that are independent of the terminals used by the user and including a logical extension number and a call-coverage path, with the corresponding users.  Prior to a user logging on at a terminal, call processing uses the terminal's associated physical and default terminal translations to process calls originating at the terminal or addressed to the terminal, and redirects calls addressed to the user to the call-coverage path specified in the user's logical translations.  Subsequent to a user logging on at a terminal, call processing uses the terminal's associated physical translations and the user's associated logical translations to process calls originating at the terminal or addressed to the user, and continues to use the terminal's associated physical and default terminal translations to process calls addressed to the terminal.
Patent CA-2086152-C (CA)
Title: Spin method of washing fabric in a horizontal axis washer
Inventor: EULER JOHN W
IPC: D06F35/00
Filed: 1992-12-23
Granted: 1999-10-26
Abstract: An improved wash process is provided for a horizontal washer wherein a concentrated detergent solution is applied to a spinning wash load, the load is spun to effect a greater than one gravity force to maintain the clothes load against the basket wall, and the concentrated detergent solution is recirculated through the clothes load for a first period of time. After the first period of time, the detergent solution is diluted somewhat, although the concentration remains abave a normal concentration of 0.06 to .28%. The wash chamber will then be spun to effect less than a one gravity centrifugal force on the fabric such that the fabric will tumble in the wash chamber. The lesser concentrated detergent solution will then be recirculated on to the fabric during a second time period.
Patent CA-2093145-C (CA)
Title: Substantially pure interleukin-9 receptor and uses thereof
Inventor: DRUEZ CATHERINE
IPC: G01N33/53
Filed: 1991-09-12
Granted: 2000-01-04
Abstract: The invention relates to substantially pure interleukin-9 receptor molecules, and the uses thereof. The molecule is a glycoprotein of about 64 kilodaltons and, upon digestion with N-glycosidase F, yields a peptide of about 54 kilodaltons. Figure 2 shows the binding of radioactive IL-9 to TS1 cells; which contain the IL-9 receptor, over time at various incubation temperatures. The substantially purified molecule can be used to inhibit the effect of IL-9 on an individual, to determine the amount of IL-9 in a sample, to determine the presence of cells which contain the IL-9 receptor, and to screen pharmaceuticals far efficacy in treating conditions characterized by excess proliferation of cells which proliferate in response to IL-9.
Patent CA-2099419-C (CA)
Inventor: PEDAIN JOSEF
IPC: C08G18/66
Filed: 1993-06-30
Granted: 2004-03-30
Abstract: The present invention relates to a polyisocyanate mixture which has blocked isocyanate groups and an average NCO-functionality, based on reversibly blocked isocyanate groups, of 2.0 to 2.6, and is the reaction product, converted into the salt form by the at least partial neutralization of the incorporated carboxyl groups, of i) at least one organic diisocyanate having a molecular weight of 168 to 300 with ii) at least one monofunctional blocking agent for isocyanate groups, iii) at least one monobasic or dibasic hydroxycarboxylic acid, iv) 1 to 15 wt.%, based on the weight of component i), of at least one dihydric to hexahydric alcohol having a molecular weight of 62 to 182 and v) 50 to 500 wt.%, based on the weight of component i), of at least one diol having a molecular weight of 350 to 950 and containing ester groups.        The present invention also relates to the use of this polyisocyanate mixture in combination with water dispersible or water soluble polyhydroxyl compounds for the production of aqueous stoving lacquers.
Patent CA-2103393-C (CA)
Inventor: BECKERMAN HOWARD L
IPC: H02P23/00
Filed: 1993-11-18
Granted: 1996-05-21
Abstract: A variable speed control system for a single phase AC induction motor wherein a controllable switch is in series with the main winding of the motor, while the auxiliary winding of the motor, which is in series with a capacitor, is continuously energized.  The switch is opened whenever the current through the main winding passes through zero.  While the switch is open, the back e.m.f. in the main winding is sensed to provide a measure of the speed of the motor.   This is compared with a desired speed signal and the comparison is utilized to control closure of the switch.  The speed of the motor then remains constant at the desired speed, even with a varying load.
Patent CA-2104302-C (CA)
Title: Spray-head for fighting fire
Inventor: SUNDHOLM GORAN
IPC: A62C31/05
Filed: 1992-02-28
Granted: 2002-05-07
Abstract: The invention relates to a spray-head for fire fighting. The spray-head according to the invention comprises a housing hav-ing a central boring with a movable spindle (11), the spindle (11) comprising a shoulder (11a) for defining an annular space (15) between the spindle (11) and a surrounding boring wall, the annular space (15) communicating with a respective feed line (3) and having the same cross-sectional area as the end of the piston (11) subected to the liquid pressure in the line (3). A spring force (16) is arranged to act on the piston (11) in the direction of release.
Patent CA-2104856-C (CA)
Inventor: FOETTINGER WALTER
IPC: B32B5/26
Filed: 1993-08-25
Granted: 1997-02-18
Abstract: A heat stable part for vehicle interiors, in particular a car canopy carrier, has one or three layers, whereby the layers exposed to heat are made of 25 to 100 wt.% of polybutylene terephthalate fibers and at most 75 wt.% of polyester fibers having a higher melting point.  The part has a higher residual bending strength at 90°C than conventional vehicle interior parts which substantially prevents sagging of the part when installed in a vehicle.
Patent CA-2108822-C (CA)
Inventor: SWANSON RICHARD N
IPC: B66D1/54
Filed: 1993-10-20
Granted: 1999-02-23
Abstract: The disclosure involves a crane having a main hoist drum and an auxiliary hoist drum for handling a load under normal and emergency (the latter actual or simulated) conditions, respectively.  The latter condition involves a main hoist which is inoperative because of a failure or by intent.  The auxiliary hoist drum is wrapped with about twice the length of cable as the main drum and can move the load up or down, irrespective of load position if and when the main hoist becomes inoperative.  Also disclosed is a novel method for moving a load. Steps include maintaining one drum in a non-rotating mode and rotating the other drum.   An improved crane load block is also disclosed to have "floating sheaves" which help prevent excessive fleet angles.
Patent CA-2112343-C (CA)
Title: Semiconductor laser device
Inventor: SHIOMOTO TAKEHIRO
IPC: H01S5/0232
Filed: 1993-12-23
Granted: 1998-09-15
Abstract: A semiconductor laser device includes a base, a semiconductor laser chip and a resin layer enclosing the semiconductor laser chip. The base may have a monitor photodiode chip mounted thereon in the vicinity of the semiconductor laser chip. The resin layer enclosing the semiconductor laser chipor both of the semiconductor laser chip and the monitor photodiode chip is made of a single synthetic resin having a thickness not greater than 500µm and also having a surface substantially parallel to an outwardly oriented beam emitting end face of the semiconductor laser chip.
Patent CA-2120057-C (CA)
Inventor: URABE YOSHIO
IPC: H04B1/54
Filed: 1994-03-28
Granted: 1998-12-22
Abstract: A transceiver for transmitting and receiving a signal having the same frequency according to a time-division includes a local oscillator for generating a local signal having a first frequency, a frequency converter for converting the local signal into a carrier signal, a modulator for modulating the carrier signal by using a transmitting baseband signal so as to generate a transmitting signal having a second frequency, and a receiving section for receiving a receiving signal having the second frequency - which is the same as that of the transmitting signal. The frequency converter includes a fractional frequency converter for converting a signal having an input frequency into a signal having an output frequency.  The output frequency is n2/n1 times the input frequency, where n1 is an integer greater than 2, n2 is an integer greater than 1, n1 and n2 being relatively prime, whereby the second frequency of the transmitting signal is not any integral multiple of the first frequency of the local signal.  During a receiving operation of the transceiver, the operation of the frequency converter is terminated.
Patent CA-2121067-C (CA)
Title: Valve assembly structure for a fluid stream
Inventor: HOEHN WILLIAM E
IPC: F16K1/38
Filed: 1994-04-12
Granted: 1997-11-11
Abstract: A valve assembly structure including a valve body having a fluid passage therein to allow fluid to flow from one end port opening to an opposite end port opening, the valve body including an annular sealing surface cooperative with at least one of the end port openings with a valve stem cooperatively aligned with such end port opening to open and close the same, the valve stem having a collar restrainedly fastened to such valve stem to present an annular  collar  sealing surface  facingly  cooperative with the annular sealing surface on the valve body to fluid seal the end port opening when the valve stem is moved to a closed position.
Patent CA-2124511-C (CA)
Title: Improved method for supervising tdma radio frequency communications
Inventor: TOMASI PETER A
IPC: H04W24/00
Filed: 1994-05-27
Granted: 1999-03-02
Abstract: A unique method for supervising a cellular telephone call between a base station and a radio telephone of a TDMA cellular communications system includes the steps of detecting the presence of the assigned time slot (306); detecting the presence of the assigned DVCC when the assigned time slot is detected (308); incrementing a bad slot counter (316) if the assigned time slot is not detected or if the assigned DVCC is not detected; and terminating the communication (322) if the bad slot counter reaches a predetermined maximum value. A good slot counter is incremented (310) when the assigned DVCC is detected in a burst. The good slot counter is reset (318) if the assigned DVCC is not detected in the next burst, and both counters are reset (314) if the assigned DVCC is detected in consecutive bursts.
Patent CA-2126472-C (CA)
Inventor: WILLIAMSON KENNETH M
IPC: C10M175/04
Filed: 1994-06-22
Granted: 2001-10-23
Abstract: A method of removing a corrosive aqueous solution from a mixture with a water immiscible liquid organic phase in which it is substantially immiscible is provided which includes (a) introducing a mixture of a corrosive aqueous solution and a water-immiscible organic liquid phase to at least one coalescing assembly which includes at least one coalescing element with a packing material substantially chemically inert to the corrosive aqueous solution and having a critical wetting surface tension intermediate the surface tensions of the aqueous caustic solution and the water-immiscible organic liquid phase to form a mixture of coalesced corrosive aqueous solution droplets in the water-immiscible organic liquid phase; and (b) separating the coalesced corrosive aqueous solution from the water-immiscible liquid organic phase.      A liquid purification system capable of separating a first liquid from a second liquid, in which the first liquid is a corrosive aqueous liquid that is wholly or partly immiscible in and forms a discontinuous phase with a second, continuous phase-forming organic liquid is provided which includes a housing; a fluid inlet in the housing; a first liquid outlet in the housing; a second liquid outlet in the housing; at least one coalescing assembly for coalescing the first liquid; and a liquid separating region in the housing. A coalescing element for coalescing a first liquid from a second liquid, in which the first liquid is a corrosive aqueous liquid that is wholly or partly immiscible in and forms a discontinuous phase with the second, continuous phase-forming organic liquid comprising a porous, fibrous structure including fluorocarbon polymer fibers, end caps, a core and a cage.
Patent CA-2129433-C (CA)
Title: Ground engaging movable skate brake
Inventor: MITCHELL DAVID N
IPC: A63C17/06
Filed: 1993-02-04
Granted: 1999-08-31
Abstract: A ground engaging movable skate brake brings a brake surface (40) into contact with the ground by moping the brake surface independently of the skate. The skate brake system of this invention includes: a delivery mechanism (22) for driving a brake surface to the ground; a variable force mechanism (30) for providing an increased mechanical advantage to the delivery mechanism or otherwise enhancing the performance of the system; an arresting mechanism (64) to provide an emergency back-up in the event that the delivery mechanism should fail; a brake surface (40) driven to the ground by the delivery mechanism (22); and an actuator mechanism (80) for activating the delivery mechanism. Using the ground engaging movable skate brake, a skater need not perform any special body movement to bring the brake surface to the ground. The angle of the skate relative to the ground remains constant while the brake is applied.
Patent CA-2131705-C (CA)
Inventor: FILLER AARON G
IPC: G01R33/34
Filed: 1993-03-08
Granted: 2008-10-21
Abstract: A neurography system (10) is disclosed for generating diagnostically useful images of neural tissue (i.e. neurograms) em-ploying a modified magnetic resonance imaging system (14). In one embodiment, the neurography system selectively images neu-ral tissue by employing one or more gradients to discriminate diffusion anisotropy in the tissue and further enhances the image by suppressing the contribution of fat to the image. The neurography system is part of a broader medical system (12), which may include an auxiliary data collection system (22), diagnostic system (24), therapeutic system (26), surgical system (28), and training system (30). These various systems are all constructed to take advantage of the information provided by the neurography system regarding neural networks, which information was heretofore unavailable.
Patent CA-2131709-C (CA)
Title: Immune-enhancing agent for therapeutic use in immunocompromised hosts
Inventor: BEARDSLEY TERRY R
IPC: A61K35/26
Filed: 1993-03-09
Granted: 2004-11-23
Abstract: A thymus-derived factor from clonal mammalian cell lines of thymic origin, known as TISF, which stimulates, enhances or regulates cell-mediated immune responsiveness, which is preferably substantially homogeneous and purified, and which enhances proliferation and differentiation of lymphocyte and other hematopoietic progenitors and which enhances the response of animals, especially mammalian organisms, to infectious agents and to malignancies. Also disclosed are methods for using TISF in treatment or prevention of disease.
Patent CA-2138611-C (CA)
Title: Aircraft and in particular rotary-wing aircraft seat having an energy absorption device automatically adjustable as a function of the size of the occupant
Inventor: KERDONCUFF RONAN
IPC: B64D25/04
Filed: 1994-12-20
Granted: 2006-02-28
Abstract: In order that the acceleration suffered by the occupant (0) of an aircraft, particularly a rotary-wing aircraft seat in the case of an accident remains below a humanly withstandable limit, no matter what the size of said occupant, a seat is proposed in which a height regulation of the pan or bucket (16), in which the occupant is received, also has the effect of modifying the inclination of the energy absorbers (38).      Thus, the vertical component of the retaining force exerted on the pan (16) by said absorbers decreases with the size of the occupant, which leads to the desired result.