Patents Represented by Law Firm Osterlenk, Faber, Gerb & Soffen
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Patent number: 7230403Abstract: A DC offset compensation system and method significantly reduce a DC offset voltage in the voltage feedback loop of an AC motor drive control system. A control voltage error signal is demodulated and filtered and applied to the closed loop voltage feedback signals to compensate for DC offset voltages in the closed loop voltage feedback. A frequency discriminator tuned to the fundamental motor frequency improves the precision of the DC offset detection. A startup flux DC offset compensation operates to eliminate initial startup flux DC offset. Motor flux compensation is improved through a variable flux filter time constant.Type: GrantFiled: April 29, 2004Date of Patent: June 12, 2007Assignee: International Rectifier CorporationInventor: Eddy Ying Yin Ho
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Patent number: 7206603Abstract: This invention relates to a cellular radio telephone set having a USB peripheral circuit which realizes a USB connection function. When the cellular radio telephone set is connected to an information processing terminal apparatus via a USB cable, a voltage Vbus supplied from the information processing terminal apparatus is regulated and supplied to the USB peripheral circuit. When the cellular radio telephone set is not connected to the information processing terminal apparatus via the USB cable, an application CPU which controls the USB peripheral circuit is shifted to a sleep mode.Type: GrantFiled: May 11, 2005Date of Patent: April 17, 2007Assignee: NEC CorporationInventor: Masahito Shinohara
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Patent number: 7190124Abstract: A dimmer circuit provides AC power to an inductive lighting load in series with the dimmer circuit. A bidirectional semiconductor switch has a control electrode with a control signal for determining the power provided to the load. The switch in normal operation is controlled to block voltage in first and second half-cycles of the AC voltage. In a failure mode it can block the AC voltage in only one half-cycle. A controller for the switch determines the failure mode of the switch occurs which can cause an asymmetry between the half-cycles and thus a DC voltage component. A power supply supplies power to the controller from across the dimmer circuit. The controller drives the switch into substantially full conduction during most of the half-cycle which the switch is able to control; and drive the switch into non-conduction for a period of time during that same half-cycle so as to reduce the DC voltage component to prevent excessive transformer heating.Type: GrantFiled: May 16, 2005Date of Patent: March 13, 2007Assignee: Lutron Electronics Co., Inc.Inventors: Russikesh Kumar, Stuart DeJonge, David J. Dolan
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Patent number: 6855042Abstract: Retaining device (1) for a block or suction element (10) in a centering device for spectacle lenses, having a support, which has a longitudinal axis (2), having a spherically dome-shaped bearing surface (3) on the support, having a spherical dome (5), which is mounted cardanically on the support and is complementary to the bearing surface, having a holding element (6) in the spherical dome for the block or suction element with a contact surface (11) for the spectacle lens, and having a radius (R) of the bearing surface and of the spherical dome, the mid-point (M) of which is located on the longitudinal axis of the support (1) on the contact surface for the spectacle lens.Type: GrantFiled: October 30, 2000Date of Patent: February 15, 2005Assignee: Wernicke & Co. GmbHInventors: Ralf Werner, Fritz Kötting
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Patent number: 6821992Abstract: The invention relates to compounds of general formula I, where A1, R1, R2 and Y are as defined in the description; and to their use as phytopathogenic fungicides.Type: GrantFiled: July 9, 2002Date of Patent: November 23, 2004Assignee: Aventis CropScience S.A.Inventors: Tracey Cooke, David Hardy, Brian Moloney, Peter Stanley Thomas, Chris Richard Steele, Geoffrey Gower Briggs
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Patent number: 6807455Abstract: A reference command value is transmitted from an apparatus server (90) through a network (96d) to spin processing units (SR1-SR4) of a substrate processing apparatus (1). Next, a plurality of correction amounts for making processing states in the respective spin processing units (SR1-SR4) substantially the same are computed from a plurality of measured values corresponding to the respective spin processing units (SR1-SR4) and the reference command value, and are additionally stored in a correction amount database (90a). For execution of substrate processing, a plurality of correction amounts corresponding to the reference command value are extracted from the database, and corresponding ones of the correction amounts plus the reference command value are transmitted to the respective spin processing units (SR1-SR4).Type: GrantFiled: June 11, 2003Date of Patent: October 19, 2004Assignee: Dainippon Screen Mfg. Co. Ltd.Inventors: Takushi Yoshida, Tetsuya Hamada
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Patent number: 6424473Abstract: A body frame, which is a lens barrel device, comprising two semi-circular torus-shaped lens frames, respectively, mounting thereto a forward-group lens and a rearward-group lens, and two guide shafts fixed to one of the lens frames and slidably inserted into a sleeve fixed to the other of the lens frames and into a slot, the two lens frames being supported to advance and retreat relative to each other. When a jig is used to assemble the lens frames, the two lens frames are mounted to the jig while the forward-group lens, the rearward-group lens and the two guide shafts are inserted into the jig with gaps therebetween, the jig being in a state, in which the forward-group lens, the rearward-group lens and the two guide shafts are retained in a predetermined position, and an adhesive is filled into and fixed to the respective gaps to complete assembly. Such lens body frame can ensure optical performance without being affected by accuracy of parts such as lens frames, guide shafts, photographing lenses and so on.Type: GrantFiled: June 28, 2000Date of Patent: July 23, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Takeshi Nakane, Shigeo Hayashi, Tatsuo Takanashi
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Patent number: 5795501Abstract: Disclosed is an electrically-conductive composition suitable for hot wire heaters which take on a dark brown color instead of an amber color of silver. The composition comprises (A) silver powder, (B) glass frit, (C) rhodium or compound thereof, (D) inorganic pigment, and (E) organic vehicle.Type: GrantFiled: September 10, 1996Date of Patent: August 18, 1998Assignee: Murata Manufacturing Co., Ltd.Inventor: Haruhiko Kano
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Patent number: 5540817Abstract: A method and apparatus for temporarily separating a web from one of the two wire belts in a twin wire zone in a paper making machine. In the twin wire zone, the negative pressure from a suction box is applied to the first wire belt for temporarily deflecting and separating the first wire belt and the web from the second wire belt and the wire belts then returning to contact the web following the suction box. The wire belts are then successively separated from the web by an appropriate guide and take up device. The take up device may comprise a press which includes a press nip defined by one of a suction roll over which the second wire in the web is passing or another type of roll or a flexible support device like a rotating press jacket. A smooth surface, such as that of a roll, forms a press nip with the support device for the second wire belt and after that press nip, the web adheres to the smooth surface to be transported further through the machine.Type: GrantFiled: January 21, 1994Date of Patent: July 30, 1996Assignee: J. M. Voith GmbHInventor: Christian Schiel
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Patent number: 5507008Abstract: In a channel assignment method for a mobile communication system, each of base stations respectively arranged in a plurality of cells constituting a service area selects one of all speech communication channels in an order of priority common to all the cells in response to a speech communication request from a mobile station. The base station then checks whether the carrier to interference ratio of the selected speech communication channel is equal to or higher than a predetermined level. The selected channel is assigned as a speech communication channel for the cell when it is determined on the basis of the check result that the carrier to interference ratio is equal to or higher than the predetermined level.Type: GrantFiled: June 15, 1994Date of Patent: April 9, 1996Assignee: NEC CorporationInventors: Toshihito Kanai, Kojiro Hamabe
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Patent number: 5451426Abstract: A thin film of barium titanate is formed on a substrate by immersing a substrate in an aqueous solution containing titanium ions along with a glass substance mainly comprising barium oxide and silicon dioxide. In the solution, barium ions are eluted from the glass substance with the solution to react with titanium ions in the solution to deposit barium titanate on the substrate.Type: GrantFiled: April 8, 1993Date of Patent: September 19, 1995Assignee: Murata Mfg. Co., Ltd.Inventors: Yoshio Abe, Hiroshi Takagi, Yukio Sakabe
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Patent number: 5351014Abstract: A frequency synthesizer is composed of a reference oscillator, the first and the second integrators, a binary adder, a low pass filter and VCO forming a Phase Locked Loop (PLL). The first integrator, driven by the timing of a reference oscillator, integrates an externally supplied value K and generates the input signal. The second integrator, driven by the output signal of the VCO of the PLL, integrates an externally supplied value L. The binary adder detects the difference between the outputs of the first and the second integrators functioning as a phase comparator. The output of the phase comparator is converted into an analog voltage which is filtered to control the VCO to achieve frequency synthesis by the phase lock function of the loop.Type: GrantFiled: August 2, 1993Date of Patent: September 27, 1994Assignee: NEC CorporationInventor: Osamu Ichiyoshi
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Patent number: 5315409Abstract: A frequency distribution or histogram M (L.sub.j-1, L.sub.j) of differences between gradation levels (L.sub.j-1, L.sub.j) of adjacent pixels (P.sub.j-1, P.sub.j) in an image is obtained, and the number of level-changes for each tentative threshold level L.sub.j is determined as a function of the histogram of the level differencies. By using the number of level-changes, an optimum binarization threshold level is set by means of an adaptive thresholding method. Since the number of level-changes is calculated from the histogram of the level-differencies without practical binarization for each threshold level, the amount of calculations is not dependent on the number of pixels but on the number of gradation levels. The calculations for setting the threshold level for the binarization of the image are achieved at high speeds by a small-scale hardware.Type: GrantFiled: February 19, 1992Date of Patent: May 24, 1994Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Akira Matsumura, Ryuji Kitakado
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Patent number: 5310686Abstract: A method is disclosed for coating the surface of an optical structure, such as a diffraction grating, useful for the detection of a ligand, which method comprises forming on the surface of the optical structure a thin, uniform layer of a polymerizable material, particularly one which polymerizes on exposure to light or heat, and subsequently exposing said material to polymerizing conditions. A specific binding partner is subsequently absorbed on or bound to the cured polymer layer, either directly or indirectly. Complex formation between the specific binding partner and ligand present in the sample to be analyzed alters the optical properties of the device and the change forms the basis of an assay.Type: GrantFiled: November 4, 1988Date of Patent: May 10, 1994Assignee: Ares Serono Research & Development Limited partnershipInventors: Craig G. Sawyers, Rosemary A. L. Drake
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Patent number: 5310268Abstract: An antifriction bearing with an outer ring having a main groove in its periphery. The groove has sharp edges which engage the interior of a housing surrounding the outer ring. Alternately, a secondary groove may adjoin an axial side or both axial sides of the main groove. A deformable material ring having its own radially outwardly facing deformation remitting groove may be disposed in the main groove in the outer ring. The deformable ring protrudes radially out of the main groove to be deformed by the internal wall of the housing around the bearing.Type: GrantFiled: March 15, 1993Date of Patent: May 10, 1994Assignee: FAG KugelFischer Georg Schafer KGaAInventor: Werner Schlereth
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Patent number: 5277876Abstract: A valve for a sterilizer container comprises an elastic support body in the form of a pressure capsule which holds the valve in open position. This pressure capsule communicates with the interior of a headpiece which is sealingly arranged on the valve cap, the capsule having a valve opening which can be closed by the plug of an adjusting member. The closing is effected, after the sterilization temperature has been reached, by a temperature-sensitive member which has an alloy which melts when the sterilization temperature is reached. The alloy when in solidified state holds the adjusting member, which is under spring tension, fast and permits it to move as soon as it melts. The adjusting member can be clamped by means of a one-way coupling when the alloy is solidified. The entire valve arrangement can be removed from the container. It preferably lies in a cup-shaped depression in the lid of the container, the possibility of stacking with other containers being thus assured.Type: GrantFiled: November 6, 1992Date of Patent: January 11, 1994Assignee: Wagner GmbH Fabrik Fur MedizinischeInventor: Peter Wagner
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Patent number: 5264265Abstract: A multi-ply, re-sealable label intended for retail use to provide extended text and graphics for consumer information. The label construction includes multiple plies of flexible printed materials using bonding agents and release coatings which allow for numerous openings and pre-closures. The label incorporates a consumer-friendly peel-tab for easy opening and re-closure, materials with a natural "memory" to facilitate re-closure and re-sealability without the use of a tacky adhesive.Type: GrantFiled: October 15, 1992Date of Patent: November 23, 1993Assignee: Beckett CorporationInventor: Thomas R. Kaufmann
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Patent number: D515812Type: GrantFiled: November 1, 2004Date of Patent: February 28, 2006Inventor: Paul Giampavolo
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Patent number: D516947Type: GrantFiled: December 3, 2004Date of Patent: March 14, 2006Inventor: Paul Giampavolo
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Patent number: D345744Type: GrantFiled: December 4, 1992Date of Patent: April 5, 1994Assignee: Hudson Optical CorporationInventor: Richard Hirschman