baber/WOPTO huggingface dataset:
Patent CA-1298876-C (CA)
Title: Polarization-insensitive technique for coherent optical communication
Inventor: CIMINI LEONARD J JR
IPC: H04B10/64
Filed: 1989-01-19
Granted: 1992-04-14
Abstract: POLARIZATION-INSENSITIVE TECHNIQUE FOR COHERENT OPTIONAL COMMUNICATION Abstract To exploit the potential advantages of coherent optical communications systems, the polarization states of the received optical signal and the local oscillator waves must be matched. A mismatch may severely degrade detection performance. These mismatches occur because the received signal state of polarization changes with time and along the ber. In this memorandum, we first review several existing techniques for handling this problem, such as polarization-maintaining fibers, polarization-state controllers and polarization-diversity receivers. We then describe several alternative techniques which rely on forcing the polarization state of either the transmitted signal or local oscillator to vary with time in a non-adaptive manner so that polarization-insensitive performance is obtained. The proposed schemes adopt a completely new approach which uses high-birefringence single-mode fibers to implement polarization switching. These techniques require only a single photodetector and give a fixed level of detection performance, with a power penalty relative to ideal of 3 dB.          An important result of this work is a demonstration that polarization orthogonality between two signals launched into a long single-mode fiber is virtually preserved at the output. This permits us to consider polarization switching and/or modulation at the transmitter.          A specific technique is presented in which polarization-insensitive heterodyne detection is achieved through data-induced polarization switching. The polarization switching is brought about by inserting a passive, birefringent optical device in the path of the transmitted FSK signal. The experimental results show that this technique suffers a power penalty of 3 to 4 dB when compared with a conventional FSK system with perfectly matched polarizations. This compares well with the expected penalty of 3 dB. This approach uses a single optical receiver and no additional receiver electronics, which could be a significant advantage for local-area networks.
Patent CA-1331743-C (CA)
Inventor: HEIKKINEN URHO
IPC: B66B11/08
Filed: 1989-03-08
Granted: 1994-08-30
Abstract: ABSTRACT OF THE DISCLOSURE           A rope suspension apparatus for an elevator system, includes a bed, a motor attached to the bed, a motor shaft, a traction sheave so mounted on the shaft that the ends of the traction sheave are inclined at an angle relative to vertical, and at least one diverter pulley, such that at least one suspension rope may run from an elevator car to the traction sheave via a route between the traction sheave and the at least one diverter pulley.   The arrangement provides that each suspension rope may after passing around the traction sheave run to the respective one of the at least one diverter pulleys via a route proximal to that of the suspension rope or ropes going towards the traction sheave, and at least one counterweight may be suspended on the suspension rope or ropes below the at least one diverter pulley wherein the traction sheave has been rotated substantially sideways by an angle substantially equal to the angle that the ends of the traction sheave are inclined relative to vertical.
Patent CA-1336716-C (CA)
Inventor: DESCHLER ULRICH
IPC: C07F7/18
Filed: 1989-06-23
Granted: 1995-08-15
Abstract: The present invention relates to the production of cyclic N,N,N'- and N,N,N',N'-substituted organyl oxysilyl-func-tional silanes by reacting an aminopropyl silane with carbon disulphide and by heating the nascent dithiocarbamate and to N,N,N'- and N,N,N',N'-substituted cyclic thioureas thus produced.
Patent CA-1306781-C (CA)
Title: Differential ice sensor and method
Inventor: HAUL ROBERT W
IPC: F25D31/00
Filed: 1989-07-19
Granted: 1992-08-25
Abstract: Abstract of the Disclosure A differential ice sensing system and method for a cold drink beverage dispenser or the like is disclosed.  The beverage dispenser has an ice bath cooling tank containing a supply of water.  A refrigerated cooling surface is provided within the tank so as to freeze a portion of the water into a body of ice.          The beverage dispenser has a beverage flow path which is cooled by the liquid in the ice bath.  The differential ice sensing system comprises a first conductivity (or impedance) probe which is disposed in the water of the ice bath at a position where it will sense the conductivity of the ice when the body of ice formed on the refrigerated surface attains a predetermined size.          A second conductivity probe is disposed within the liquid so that it is maintained in conductivity sensing relationship with the liquid.  Each of the probes is responsive to an electric current supplied thereto to measure the electrical conductivity in its vicinity.  A system is provided for detecting conductivity differences between the first and second probes indicative of the presence of ice at the first probe and for generating a signal indicating presence of ice at the first probe.  This signal may be utilized to block the flow of refrigerant to the refrigerated surface when the body of ice formed has reached a pre-determined size and to initiate the flow of refrigerant when the body of ice is less than a desired size.
Patent CA-1317540-C (CA)
Title: Oil recovery process using microbial combinations
Inventor: BRYANT REBECCA S
IPC: C09K8/90
Filed: 1989-07-24
Granted: 1993-05-11
Abstract: ABSTRACT          A method is provided for microbial enhanced oil recovery, wherein a combination of microorganisms is empirically formulated based on survivability under reservoir conditions and oil recovery efficiency, such that injection of the microbial combination may be made, in the presence of essentially only nutrient solution, directly into an injection well of an oil bearing reservoir having oil present at waterflood residual oil saturation concentration.  The microbial combination is capable of displacing residual oil from reservoir rock, which oil may be recovered by waterflooding without causing plugging of the reservoir rock.  Further, the microorganisms are capable of being transported through the pores of the reservoir rock between said injection well and associated production wells, during waterflooding, which results in a larger area of the reservoir being covered by the oil-mobilizing microorganisms.
Patent CA-1338033-C (CA)
Title: Process for polymerizing ethylene and copolymerizing ethylene with alpha-olefins and relevant catalyst
Inventor: CIARDELLI FRANCESCO
IPC: C08F10/02
Filed: 1989-09-20
Granted: 1996-02-06
Abstract: Ethylene  homopolymers  and ethylene  copolymers  with alpha-(C3-C10)-olefins  are  obtained  by  polymerizing  the monomers with a polymerization catalyst formed by: a) an alkyl-aluminum; and b) a modified solid catalyst component obtained by treating with a Lewis' base a non-modified solid component to be defined by means of the following formula, expressed as atomic proportions: Ti (1), Hf (0.5-3), Si (1-6), Mg (0.5-15), Al (0.5-15), X (20-60), ROH (1-10) wherein: X represents either chlorine and bromine, and R represents an either linear or branched alkyl radical of from 1 to 6 carbon  atoms.  The  catalyst  is  particularly  useful  for controlling the molecular weight and the molecular weight distribution of ethylene homopolymers and copolymers.
Patent CA-1320290-C (CA)
Title: Algorithms for minimizing excursion in placement of channel selects into multiplexer frame
Inventor: BAINS KULDIP S
IPC: H04J3/16
Filed: 1989-09-22
Granted: 1993-07-13
Abstract: ABSTRACT OF THE DISCLOSURE     Algorithms for ordering selects for a plurality of channels to be multiplexed into a frame so as to minimize or reduce channel excursion are provided.  The channel select position counter for each of the channels to be multiplexed are initialized.  In one embodiment, the first and succeeding channel selects are chosen based on the lowest price (highest cost) ready channel, with the price of a channel being equal to the value of the channel select position counter divided by the number of selects for that channel in the frame, and the readiness of the channel being indicated either by an indicator, or by the relative value of the position counter to the initial value of the position counter.  After a select is made, the position counter of the selected channel is increased by the total number of selects in the frame, and the position counters of all of the channels, including the selected channel are decremented by a value corresponding to the number of selects for that channel in the frame.  After such updating, another selection for the frame may be based on the lowest priced ready channel.  In a second embodiment, the first and succeeding channel selects are chosen based primarily on the respective values of the channel ready counters such that a channel having a ready counter of relative higher value is always selected before a channel having a ready counter of relatively lower value.  Where channel ready counter integer values of more than one channel are equal, the highest rate channel of the highest ready count contributing first.  After a select is made, the ready counter of the selected channel is decremented by a value corresponding to the number of selects for that channel in the frame.  If the position counter of a channel reach zero or goes negative as a result of the decrementing, the position counter of that channel is increased by the total number of selects in the frame, and the ready counter for that channel is incremented by one.
Patent CA-1332533-C (CA)
Inventor: CHAPDELAINE ALBERT H
IPC: A23G4/06
Filed: 1989-09-26
Granted: 1994-10-18
Abstract: A chewing gum having prolonged flavor yield and better texture . The chewing gum contains a flavor enhancing amount and preferably from about 0.1 weight percent to about 0.7 weight percent of any emulsifier having Hydrophile-Lipophile Balance (HLB) value of greater than about 7.
Patent CA-1339335-C (CA)
Inventor: HOFER ARNOLD DR
IPC: C08G59/68
Filed: 1989-09-27
Granted: 1997-08-19
Abstract: An epoxy resin composition comprising an epoxy resin which is solid at room temperature and contains on average more than epoxy group per molecule, a compound which contains two phenolic hydroxyl groups and a quaternary morpholinium salt as advancement catalyst. When advanced with compounds containing two phenolic hydroxyl groups, these compositions give excellent products of low viscosity which are suitable, for example, for use in powder resin coating.
Patent DK-165188-C (DK)
Inventor: SMALL LEONARD EDWIN
IPC: C11D1/78
Filed: 1986-05-13
Granted: 1993-03-15
Abstract: Disclosed is an ultra mild skin cleansing composition comprising: mild synthetic surfactants, moisturizers, polymeric skin feel and mildness aids and selected levels of soap. An ultra mild skin cleansing bar is provided which is clinically milder on the skin than water.
Patent DK-151561-C (DK)
Inventor: THENAUD RENE
IPC: B65G15/60
Filed: 1981-08-07
Granted: 1988-05-24
Abstract: 1. Concrete conveyor comprising a metal frame mounted in an articulated manner on a support which can be the chassis of a concrete-mixer lorry, an endless conveyor belt (1), a roller driving the said belt and actuated by a motor, and at least one return roller, supporting means on which the belt slides on it outward trip, that is to say during the time when it is loaded with concrete, and rollers for supporting the belt on its return trip, the said rollers and the said supporting means being supported by the said frame, characterised in that the said supporting means consist of slides (3, 4, 5) elongated in the direction of movement and made of an aluminium alloy resistant to the action of the concrete, each slide being in the form of one or more successive portions, the accumulated length of which is at least equal to 85% of the length of the frame, and the accumulated width of the slides being between 25 and 45% of the width of the belt, in that the slides as a whole from a trough of rounded cross-section, the edges of which form an angle of between 30 and 50 degrees with the horizontal, and in that the face of the belt which is in contact with the said slides has a coefficient of adhesion on the latter which is less than 0.20.
Patent DK-153891-C (DK)
Inventor: KUNG PATRICK CHUNG-SHU
IPC: C12N15/00
Filed: 1980-12-03
Granted: 1989-02-20
Abstract: Hybrid cell line for production of monoclonal antibody to an antigen found on approximately 10% of normal human thymocytes. The hybrid is formed by fusing splenocytes from immunized CAF, mice with P3X63Ag8U1 myeloma cells. Diagnostic and therapeutic uses of the monoclonal antibody are also disclosed.
Patent FI-72540-C (FI)
Inventor: SCHULZ WILLIAM J
IPC: D21C5/02
Filed: 1983-03-09
Granted: 1987-06-08
Abstract: A process for recovering pulp from pressure-sensitive carbonless copying paper waste is disclosed. This process includes defibrating the waste without substantial rupture of the microcapsules, treating the defibrated waste with an enzyme for starch saccharification and separating the fibers from the released microcapsules by means of a sidehill screen equipped with a washing shower.
Patent FI-76635-C (FI)
Inventor: MORI KEI
IPC: F24S50/20
Filed: 1983-08-09
Granted: 1988-11-10
Abstract: A device for chasing a moving light source includes a plurality of photosensors arranged in elaborated positions for accurate operation. A top plate is formed with a calibrated cruciform opening to minimize indirect light tending to enter the device. Some of the photosensors expected to receive direct light through the cruciform opening are adjustable in position in two perpendicular directions relative to the remaining part of the device. The device can be disassembled for ease of production, maintenance, etc.
Patent FI-80515-C (FI)
Inventor: LORCH WERNER
IPC: F16K11/078
Filed: 1985-05-21
Granted: 1990-06-11
Abstract: A control disk insert for a one-lever mixer valve contains two preferably, planar disks, whereof one fixed disk has at least one opening zone for hot water and at least one opening zone for cold water. The control disk facing the fixed control disk and movable with two degrees of freedom can both completely close and continously completely open the opening zones in the fixed control disk. The opening zones of the fixed control disk and the control edges of the movable control disks are constructed in such a way that the control disk insert has two completely separated, independently operating, but mechanically coupled controlsystems. Both control systems can be used for a common water outlet, or for two separate water outlets.
Patent FI-89807-C (FI)
Inventor: SEXTON DIANE
IPC: C08G59/00
Filed: 1986-07-31
Granted: 1993-11-25
Abstract: An epoxy resin composition having exceptional stability which is useful in the preparation of electrical laminates comprises an epoxy resin such as the diglycidyl ether of bisphenol A, an organic solvent, a polyhydric phenolic hardener and an acid having a pk. at 25°C of less than 2.5 or an ester or anhydride of such acid. The epoxy resin composition can also contain a bisphenol or bisphenol derivative such as bisphenol A. In addition, an accelerator such as an alkyl substituted imidazole can also be added to the composition prior to its use as in the preparation of electrical laminates.
Patent FI-89513-C (FI)
Inventor: WALLACE PETER LIAM
IPC: D21F11/00
Filed: 1988-05-25
Granted: 1993-10-11
Abstract: A process for forming a layer of particulate material, comprising the steps of forming a foamed dispersion of said particulate material, supplying said foamed dispersion to a predetermined zone of a plane through which a foraminous element is moving, applying a vacuum to said plane across said zone on the other side of said foraminous element, so as to drain foam therethrough and form a particulate layer thereon, removing from said drained foam any free air drawn through or past the foraminous element during drainage, and continuously recycling the resulting foam for re-use in forming the foamed particulate dispersion
Patent FI-97676-C (FI)
Inventor: FRICKE HELLMUTH
IPC: H05B39/10
Filed: 1990-12-13
Granted: 1997-01-27
Abstract: AC switches (TRH, TRN) are connected in both the main and standby filament circuit of a signalling lamp (L). As long as the main filament (HF) is switched on and is intact, the main filament AC switch (TRH) is switched through via input diodes, connected in reverse-parallel, of an optocoupler (U1). When current is flowing through the input diodes, the photo-transistor of this optocoupler controls a switch (S1) which is used, in this switching state, to switch off the input diode of an electro-optical AC switch (U2). If the main filament (HF) burns out and the switch (S1) is driven into the other position, the electro-optically controlled AC switch (U2) is switched through and, for its part, switches the standby filament AC switch (TRN) through. The feedback report on the operating state of the signal lamp to the control mechanism takes place via the optocoupler (U3). The main/standby filament switch is constructed using only a few, proven electronic components. It is used especially in railway signalling lights. <IMAGE>
Patent FI-92979-C (FI)
Inventor: WUNDER RAINER
IPC: B01D53/34
Filed: 1991-01-09
Granted: 1995-02-10
Abstract: In a process for the removal of ammonia, and, if required, dust, from waste gases which arise in the production of fertilizers, the waste gases are treated in an absorption zone with a circulated ammonium nitrate solution. The ammonium nitrate solution has a temperature theta  of 20 to 100 DEG C and, at the entry to the absorption zone, a pH of at least a value given by the following formula <IMAGE> in which Y denotes the ammonia concentration of the gas to be treated in mg/m<3)<S.T.P.).
Patent FI-90228-C (FI)
Inventor: RAUTIO KAUKO
IPC: B65G21/12
Filed: 1992-01-13
Granted: 1994-01-10
Abstract: The invention relates to a chain conveyor, for example for conveying sawn wood after a sawing machine, the chain conveyor being made up of two adjacent conveyor chains (1) on top of which the conveyor flights (2,5,6) supporting sawn wood are located. The conveyor flight (2,5,6) is articulated in such a manner that the width of the entire chain conveyor can be regulated by adjusting the distance between the conveyor chains (1). <IMAGE>
Patent NO-143082-C (NO)
Inventor: JOHANNESSEN SVEIN
IPC: F24H9/20
Filed: 1979-04-20
Abstract: PCT No. PCT/N080/00013 Sec. 371 Date Dec. 20, 1980 Sec. 102(e) Date Nov. 24, 1980 PCT Filed Apr. 14, 1980 PCT Pub. No. WO80/02352 PCT Pub. Date Oct. 30, 1980.In a method and an apparatus for regulating the power which is supplied to a heating element (2) in a water heater (1), preferably a reservoir water heater containing water which is to be heated to a certain temperature, the power which is supplied to the heating element for heating the water, is regulated not only in dependence on the temperature of the water (15), but also in dependence on the temperature of the heating element (2, 4), so that the temperature of the element is kept below a predetermined critical value. The temperature of the heating element is measured directly and/or indirectly, and when the temperature of the element is below the critical value and the temperature of the water in the water heater is below the rated value, maximum power can be supplied to the heating element. When the temperature of the element has reached the critical value, but the temperature of the water in the water heater is still below the rated value, the power is regulated so as to keep the temperature of the heating element below the critical value and to minimize the heating period.
Patent NO-160699-C (NO)
Inventor: SOLONI UGO
IPC: B61F3/12
Filed: 1984-06-27
Abstract: The articulated joint for urban and suburban transport vehicles running on rails, in particular for tramway and/or underground railway vehicles, comprises a turn cage (2) which has its platform (16) substantially coplanar with the depressed floor of the adjacent bodies (1) and possesses two lateral compartments (17) which extend upwards beyond the platform (16) and house the wheels (6) of the bogie (3), the suspensions (10,11), the shock absorbers (14,15) and the braking members (8,9).
Patent NO-164905-C (NO)
Inventor: MACDONALD PETER
IPC: C07J71/00
Filed: 1985-06-10
Abstract: @ A process for the preparation of 16,17 acetals of pregnane derivatives by trans-ketalization of 16,17-acetonides is described.In the instance of the preparation of 16a,17a-butylide- nedioxy-11β,21-dihydroxypregna-1,4-diene-3,20-dione, a compound having useful therapeutic properties, known also as budesonide, it is possible to obtain the more active epimer with high selectivity and remarkable economic advantages in comparison with the known methods.New 16,17 acetals of pregnane derivatives, which can be prepared by the method of the invention, are also described.
Patent NO-174254-C (NO)
Inventor: CHANDRARATNA ROSHANTHA A S
IPC: A61K31/455
Filed: 1988-03-11
Abstract: Retinoid-like activity is exhibited by compounds of the formula <CHEM> where R is hydrogen or lower alkyl; A is pyridyl, thienyl, furyl, pyridazinyl, pyrimidinyl or pyrazinyl; n is 0-5; and B is H, -COOH or an ester or amide thereof, -CH2OH or an ester or ester derivative thereof, or -CHO or an acetal derivative thereof, or -COR1 or a ketal derivative thereof where R1 is -(CH2)mCH3 where m is 0-4; or a pharmaceutically acceptable salt thereof.
Patent NO-178174-C (NO)
Inventor: WIMMER HANS
IPC: B65D51/00
Filed: 1989-10-19
Abstract: A closure (2) for a medical bottle (1) has a pot-shaped cap (3), which can be connected to this bottle, and situated in it an elastic sealing element in the form of an elastic sealing layer (5). According to the invention, the sealing layer (5) is welded firmly and inseparably to the cap (3) on the inside of the cap, and, in the front side (4) of the cap (3), there is at least one cut-through opening (6), into which the sealing layer (5) projects. A method for producing a closure (2) for medical bottles, in particular for a closure according to Claims 1 to 14, consists in particular in that, in a first production step, the cap (3) is manufactured with at least one cut-through opening (6) and, in a second production step, the elastic sealing layer (5) is introduced into the cap (3) and its cut-through opening (6) and is there firmly and inseparably welded to the cap material. Such a closure is characterised by high biological safety, comfortable safe handling and by an inexpensive production method. <IMAGE>
Patent NO-176229-C (NO)
Inventor: WENGER BRUNO
IPC: H03L7/089
Filed: 1990-06-14
Abstract: In the phase detector (PD), an invariable pulse (PR) with the length of half of a period of the clock signal (Tkt) and a variable pulse (PV) are generated for data bits D = '1' occurring, the difference between which pulses (PV - PR) is supplied as control signal to a voltage-controlled oscillator (VCO) which generates the clock signal (Tkt) in the correct phase. The circuit arrangement is constructed in such a manner that the pulses (PV) and (PR) are always generated in the correct length independently of the gate transit times of the logic chips used. <IMAGE>
Patent CA-2002179-C (CA)
Title: Surface acoustic wave devices
Inventor: VAUGHAN RICHARD
IPC: G01S13/75
Filed: 1989-11-03
Granted: 2000-05-23
Abstract: A surface acoustic wave transponder in which transducers (14) on the surface of a piezoelectric substrate (10) modify an interrogating signal. The transducers are phase encoded by selectively connecting their finger sets to respective busbars (11, 12) and by displacement relative to their nominal positions. Transducer fingers and track-crossing connections (20) are located sa as to cause cancellation of reflected surface acoustic waves. A marker transducer (15) assists decoding. In the encapsulation of the transponders a cover plate (35) or individual cover plates (24) are attached to the substrate prior to the cutting of individual transponders from the substrate.