Patents Represented by Attorney, Agent or Law Firm Arent Fox Kintner Plotkin & Kahn, PLLC
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Patent number: 6754778Abstract: A memory control system has a replacement detection/notification circuit for detecting occurrence of replacement of dirty entry in a cache and informing a memory controller of the detection, and a state control circuit for precharging the currently active page in a main memory when the memory controller is informed of the detection and a preceding access to the main memory attendant upon the replacement of dirty entry is completed. By precharging the active page in the main memory to return to the idle state when the preceding access attendant upon the replacement of dirty entry is completed, the succeeding access can be done only by activating the aimed page probably different from the above page. It is thereby obviated to return the activated page due to the preceding access to the idle state after a page miss occurs in the succeeding access.Type: GrantFiled: November 18, 2002Date of Patent: June 22, 2004Assignee: Fujitsu LimitedInventor: Taizo Sato
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Patent number: 6746874Abstract: Subject matter of the invention is a reagent preparation for binding components of a sample in the form of a tablet comprising a multitude of magnetic particles which are held together with the aid of excipients, and the use of this reagent preparation in analytical test.Type: GrantFiled: June 29, 2001Date of Patent: June 8, 2004Assignee: Roche Diagnostics, GmbHInventor: Herbert Harttig
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Patent number: 6740202Abstract: A speaker diaphragm is formed from a material combining a fiber-type material and a ceramic-type-coating agent including metal alkoxide, metal hydroxide, and a colloidal or fine-particulate inorganic substance. The combining process for the ceramic-type-coating agent is performed before or after the fiber-type material is formed into a shape of the diaphragm.Type: GrantFiled: March 29, 2002Date of Patent: May 25, 2004Assignees: Pioneer Corporation, Tohoku Pioneer Corporation, Nippan Kenkyujo Co., Ltd.Inventors: Toshihiro Ishigaki, Hideo Sekikawa, Koji Maekawa, Tomoyuki Shimada
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Patent number: 6741505Abstract: A semiconductor memory device has a dummy bit line, a reference voltage generating circuit, a comparator circuit, and a timing signal generating circuit. The dummy bit line has a load equal to a load of a bit line, and the reference voltage generating circuit generates a reference voltage. The comparator circuit compares a potential of the dummy bit line with the reference voltage, and the timing signal generating circuit generates various kinds of timing signals based on an output of the comparator circuit. The semiconductor memory device simultaneously selects a plurality of dummy memory cells and connects the selected dummy memory cells to the dummy bit line, and adjusts the potential of the dummy bit line.Type: GrantFiled: March 22, 2002Date of Patent: May 25, 2004Assignee: Fujitsu LimitedInventor: Wataru Yokozeki
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Patent number: 6739977Abstract: A wheel bearing device having a unitized hub ring, double-row bearing and constant velocity universal joint with one of double-row inner raceways formed on the joint outer ring. An end portion of the joint outer ring is fitted to an outside periphery of the hub ring through serrated portions. The hub ring is plastically deformed and expanded from an inside diameter side toward an outside diameter side by pushing a steel ball into a through hole of the hub ring preventing play in the serrated portions by the diameter expansion. A surface-hardened layer is formed at least on a base portion of the wheel mounting flange.Type: GrantFiled: September 20, 2001Date of Patent: May 25, 2004Assignee: NTN CorporationInventors: Eiji Tajima, Hiroyuki Ogura, Syougo Suzuki, Shigeaki Fukushima, Mitsuru Umekida, Akira Torii, Akira Sera, Hisashi Ohtsuki
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Patent number: 6738001Abstract: A semiconductor integrated circuit comprises a digital-to-analogue converter for converting a digital signal into an analogue signal to output an analogue current signal, a current-to-voltage converter for converting the analogue current signal output by the digital-to-analogue converter, into an analogue voltage signal whose level has been controlled, and a filter for filtering the analogue voltage signal converted by the current-to-voltage converter. The current-to-voltage converter converts the current signal into the voltage signal in which a factor variable in accordance with manufacturing process conditions and/or environmental conditions has been corrected.Type: GrantFiled: February 1, 2002Date of Patent: May 18, 2004Assignee: Fujitsu LimitedInventors: Hiromi Nanba, Toru Mizutani
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Patent number: 6736099Abstract: A hydraulic engine-starting system for cranking and starting an engine for a vehicle having automatically stopping and starting functions by a hydraulic motor. A hydraulic pressure that operates a hydraulic clutch of a transmission is raised promptly by using a hydraulic motor. The hydraulic motor is driven by a hydraulic pressure supplied thereto through a first oil passage from a hydraulic motor-driving device including an oil pump, an accumulator and a solenoid valve, thereby starting the engine. A transmission is disposed in the middle of a second oil passage for returning an oil discharged from the hydraulic motor to the hydraulic motor-driving device. Thus, the hydraulic pressure in the transmission can be raised simultaneously with the start of the engine to enable the engagement of a hydraulic clutch, thereby starting the vehicle promptly, while avoiding generating a shock from the engagement of the hydraulic clutch.Type: GrantFiled: May 9, 2002Date of Patent: May 18, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Ryuichi Mori, Junya Tachikawa, Koichi Fushimi
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Patent number: 6736456Abstract: A seat apparatus comprises a backrest portion which can be tilted, a hook mounted on the upper portion which is a tilting end, a sitting portion which can raise on a fulcrum, which is a front edge, and an engaged portion which can engage a book mounted on a rear. When the sitting portion is raised, the rear of the sitting portion is turned toward the backrest portion side. When the backrest portion is tilted forward, the hook is engaged with the engaged portion, the backrest portion and the sitting portion are fixed to each other, and then it is in a double folded state. The hook is arranged at a position where a tether strap for mounting an auxiliary seat on the backrest portion is hung. The hook is integrally formed with a guide of the tether strap.Type: GrantFiled: December 24, 2002Date of Patent: May 18, 2004Assignee: NHK Spring Co., Ltd.Inventors: Kazuki Okamoto, Masataka Tobita
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Patent number: 6736565Abstract: A ball joint comprises: a ball stud having a spherical head at an end thereof; a ball seat into which the spherical head is slidably fitted so as to universally support the ball stud; and a housing for accommodating the ball seat. The ball seat and the housing have surfaces opposing each other, and recesses communicated with each other are formed on the surfaces. The recesses are filled with a resin, so that relative movement of the ball seat with respect to the housing is restricted.Type: GrantFiled: September 11, 2001Date of Patent: May 18, 2004Assignees: NHK Spring Co., Ltd., Beyonz Corp.Inventors: Koichi Tamatsu, Tadayuki Kojima, Mitsuhiro Dekune
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Patent number: 6735230Abstract: On the surface of a conductive substrate (1) of GaAs, Ge, Si, etc., a semiconductor lamination section including a light emitting layer forming portion (11) that has at least an n-type layer (4) and a p-type layer (6) made from a compound semiconductor of a Group III element and nitrogen and that is laminated so as to form a light emitting layer is formed through a buffer layer (2) suitable for the substrate. As a result, a semiconductor light emitting device using a Group III nitride compound semiconductor, which is of a vertical type that allows electrodes to be taken out from both of the upper and lower surfaces of a chip, has superior crystalline properties with high light emitting efficiency, and exhibits cleavage, is obtained. Therefore, it is possible to easily mount a LD chip on a sub-mount having a good thermal conductivity, and consequently to prevent a reduction and degradation in the light emitting efficiency (differential quantum efficiency) due to heat.Type: GrantFiled: March 8, 2001Date of Patent: May 11, 2004Assignee: Rohm, Co., LtdInventors: Tetsuhiro Tanabe, Ken Nakahara
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Patent number: 6732679Abstract: In an internal combustion engine with cylinders and a crankshaft, coolant discharged from a coolant circulating pump is supplied to a coolant jacket formed in a cylinder block via a coolant jacket formed in a cylinder head. An inlet port through which the coolant discharged from the coolant circulating pump flows into the coolant jacket is provided at one end portion of the cylinder head on an intake side thereof in a cylinder-head center line direction, whereas an outlet port through which the coolant in the coolant jacket is allowed to flow out into a heater core is provided at the other end portion of the cylinder head on an exhaust side thereof.Type: GrantFiled: May 16, 2002Date of Patent: May 11, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Yoshiaki Iizuka
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Patent number: 6735161Abstract: A recording-medium transfer device having a anti-rattle construction is provided. A transfer roller 6 of the recording-medium transfer device is arranged above a chassis 5 to be perpendicular to a direction X of transferring recording medium. The transfer roller 6 has a structure in which a shaft is inserted in rolling member made of a material having flexibility. Projecting portions 13 and 14 are formed on the chassis 5 to oppose to both ends of the rolling member. In both ends of the rolling member, clearances are respectively formed to permit the deformation produced by its abutment with the projecting portions 13 and 14. In the process for inserting the disc, the projecting portions 13 and 14 are moved away from the transfer roller 6. Upon receiving a driving force from a driving motor 7 and gears 8 to 11, the rolling member of the transfer roller 6 is rotated keeping in contact with the disc so as to transfer the disc toward a clamping position.Type: GrantFiled: October 20, 1999Date of Patent: May 11, 2004Assignees: Pioneer Corporation, Tohoku Pioneer CorporationInventors: Michihiro Sato, Nobuyuki Sato, Hideyuki Takahashi, Tetsuya Niino, Noritaka Kunimaru, Shigeharu Furusawa, Yasuhiro Shinkai
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Patent number: 6733014Abstract: The brush section of a brush seal is protected from damages during installing work. It is constituted such that a brush seal unit has, at the free end of the brush section, at least one ablative plate section formed therewith and has a thin groove at the boundary between the brush section and the ablative plate section; and the ablative plate section is broken off before mounting the brush seal between two components.Type: GrantFiled: September 27, 2002Date of Patent: May 11, 2004Assignee: Eagle Industry Co., Ltd.Inventor: Hideyuki Inoue
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Patent number: 6732568Abstract: A sensor probe and method of use for determining the temperature, velocity, and/or liquid volumetric fraction of gas laden with droplets. In one variation, the probe includes a single heating element used in a well-characterized flow. The heating element is maintained above the Leidenfrost transition for the droplets, which prevents cooling effects from the droplets from impacting the temperature measurement. In another variation, the probe includes two or more heating elements arranged in similar flow environments. The property of interest is derived by relying on thermodynamic and heat transfer principles, which are not usable in conjunction with conventional devices.Type: GrantFiled: June 20, 2003Date of Patent: May 11, 2004Assignee: University of MarylandInventors: Marino Dimarzo, Paolo Ruffino
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Patent number: 6729757Abstract: The invention relates to a method of and a device for detecting the flatness of a metal band product at high temperature, using a measuring roll (1) having a cylindrical external face (13) comprising an angular contact sector with the band and a free sector. According to the invention, the roll (1) is cooled down forcibly by circulating a heat exchanging fluid along at least one portion of the free sector of the external face (13) of the roll (1) and one determines the parameters responsible for the cooling efficiency such as the opening angle (B) of cooling sector, the temperature and the circulation flow rate of the heat exchanging fluid, so that the external face (13) of the roll (1) is brought back, at each revolution, to a pre-set equilibrium temperature. The invention applies especially to the hot rolling of ferrous and non-ferrous metals.Type: GrantFiled: October 19, 2001Date of Patent: May 4, 2004Assignee: Vai ClecimInventors: Jean-Paul Faure, Thierry Malard
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Patent number: 6730250Abstract: A method for stabilizing material physical properties of recyclable bumpers including the steps of: separating coating from raw material obtained by cleaning, fracturing and drying recyclable bumpers to form a recycled matrix; mixing an additive with the recycled matrix; melting and extruding the mixed matrix with an extrusion machine; cutting the molten and extruded matrix to produce pellets; introducing the pellets into a tank of a predetermined capacity; and mixing the pellets in the tank for a predetermined period of time while again delivering the pellets in the tank to an introduction opening of the tank for reintroduction into the tank in parallel with the pellets that are to be newly introduced.Type: GrantFiled: September 3, 2002Date of Patent: May 4, 2004Assignees: Honda Giken Kogyo Kabushiki Kaisha, Kyowa Industry Co., Ltd.Inventors: Akihisa Saitou, Tsuneo Koike, Hideaki Suzuki, Kazuo Ando
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Patent number: 6731025Abstract: A motor that is capable of both linear and rotational motion. One coil translates the motor along its axis for linear motion and a second coil causes the shaft to rotate. Coacting with the translate coil is a translate magnet where the north and south poles are oriented along the motor shaft. A segmented magnet where alternating north and south poles are located along the periphery of the magnet interacts with a rotation coil so that the interaction of the magnetic field of the segmented magnet and the magnetic field produced by the rotation coil cause the rotary magnet to rotate. Rotation of the rotary magnet, which cooperates with the shaft to which it is operably connected, causes rotation of the motor shaft.Type: GrantFiled: April 12, 2001Date of Patent: May 4, 2004Assignee: Kaba-Mas CorporationInventors: Gerald L. Dawson, James P. Redden
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Patent number: 6729162Abstract: An electric furnace extending method and apparatus for an optical fiber glass body alignment when connecting the extension use body and pulling member and making it possible to immediately start the extension after the fusing of the connection portion. A centering mechanism for centering the free end portion of the body and member on the furnace center side is provided between the furnace pipe of the electric furnace and grips of the extension use glass body and between the furnace pipe and the pulling member. The free end portion is centered by this centering mechanism, then the gripped sides of the body and member are fixed, the front ends of the two free end portions are abutted and fused and bonded at the highest temperature portion inside the electric furnace, then the highest temperature portion is moved to the extension portion of the glass body side and the extending of the glass body is commenced.Type: GrantFiled: February 7, 2001Date of Patent: May 4, 2004Assignee: The Furukawa Electric Co., Ltd.Inventors: Tetsuro Wada, Masahide Kuwabara, Yukio Komura
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Patent number: 6729452Abstract: A fluid transmitting device includes a side cover connected to a pump impeller and defining a clutch chamber between the side cover and an outer surface of a turbine runner, and a lock-up clutch which includes a clutch piston connected to the turbine runner. The clutch chamber is divided by the clutch piston into an inner oil chamber and an outer oil chamber. The inner oil chamber is divided into primary and secondary inner oil chamber sections provided between the turbine runner and the clutch piston. Upon operation of a lock-up control device, the clutch piston is urged in a clutch switch-on direction, pressure in the primary inner oil chamber section relative to the outer oil chamber is raised and then pressure in the secondary inner oil chamber section is raised relative to the outer oil chamber.Type: GrantFiled: August 22, 2002Date of Patent: May 4, 2004Assignees: Yutaka Giken Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Kiyoshi Saito, Tetsuro Maruyama
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Patent number: D489380Type: GrantFiled: December 13, 2002Date of Patent: May 4, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masayuki Ohsumi, Koichi Azuma, Makoto Uchimi