Patents Represented by Attorney, Agent or Law Firm Arent Fox Kintner
  • Patent number: 6667913
    Abstract: A phase adjustment circuit delays an external clock signal to generate an adjusted clock signal. A phase comparator compares phases of the external clock signal and the adjusted clock signal, and outputs a phase adjustment signal for adjusting a delay time of the phase adjustment circuit. A data output circuit outputs read data to a data terminal in synchronization with the adjusted clock signal. A data input circuit receives write data supplied to the data terminal, in synchronization with the adjusted clock signal. When performing input of the write data and output of the read data successively, switching control between the input operation of the write data and the output operation of the read data only has to be completed within one clock cycle. The clock cycle can thus be reduced to the time required for the switching control. Consequently, maximum frequency of the external clock signal can be increased.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: December 23, 2003
    Assignee: Fujitsu Limited
    Inventors: Masaki Okuda, Hiroyuki Kobayashi
  • Patent number: 6667124
    Abstract: A seal in a fuel cell for sealing a membrane electrode assembly comprises a pair of catalytic electrode layers, a polymerized electrolytic membrane held between the catalytic layers, and a gas diffusion layer layered on the outer surface of the catalytic electrode layer. The seal is integrally formed with the polymerized electrolytic membrane. The height thereof is greater than that of the gas diffusion layer. The difference between the heights of the polymerized electrolytic membrane and the gas diffusion layer is constant.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: December 23, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Toshihiko Suenaga, Masajirou Inoue, Nobuaki Kimura
  • Patent number: 6666972
    Abstract: The present invention is to provide a method for treating a wastewater containing heavy metals using a used iron oxide catalyst, which is to treat an acidic wastewater having a pH value of about 1.0 and containing Cu, Fe, Ni, Cr or Zn, the method including: adding the used iron oxide catalyst containing at least 70% magnetite (Fe3O4) to the wastewater at a weight ratio of 1:0.05; stirring the wastewater mixed with the iron oxide catalyst at a speed of 60 rpm for 15 minutes in a stirrer; and subjecting the wastewater to solid-liquid separation using a magnet for adsorption and removal of the heavy metals.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: December 23, 2003
    Assignee: Korea Institute of Geoscience and Mineral Research
    Inventor: Hyo-Sook Lee
  • Patent number: 6667662
    Abstract: An oscillator circuit which generates an oscillator signal that ensures the generation of a stable internal supply voltage. The oscillator circuit has a periodic circuit which includes a switch circuit. A method of controlling the oscillator circuit includes the steps of operating the periodic circuit using the switch circuit in response to a first control signal when the first control signal is in a first state to generate a first oscillator signal having a first frequency, and operating the periodic circuit using the switch circuit in response to a second control signal when the first control signal is in a second state to generate a second oscillator signal having a period synchronized to a period of the second control signal having a second frequency.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: December 23, 2003
    Assignee: Fujitsu Limited
    Inventor: Syuichi Saito
  • Patent number: 6667898
    Abstract: A method for measuring a bias voltage of plural sense amplifiers in a memory device is provided. The method includes the steps of: selecting the plural sense amplifiers as a measurement area, writing a midlevel voltage into the respective memory cell modules connected to the plural the sense amplifiers respectively, providing a reference voltage of the midlevel voltage into the plural sense amplifiers in the measurement area, recording output signals of the plural sense amplifiers, wherein the output signal is valued one of “0” and “1”, counting numbers of “0” and “1”, and obtaining a ratio of the number of “0” over the number of “1”, and obtaining the bias voltage of the plural sense amplifiers in the measurement area as the ratio.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: December 23, 2003
    Assignee: Promos Technologies, Inc.
    Inventor: Matthias Klaus
  • Patent number: 6666371
    Abstract: The present invention provides a sealing system for implementing an optimum temperature profile for solder melting and improving productivity, and a sealing method therefor. The present invention comprises a sealing machine for superimposing a pre-soldered cap onto a package on which an electronic device element is mounted, a multi-clip for receiving and holding a plurality of sets of the packages and caps superimposed by the sealing machine in batch, and a sealing furnace for heating the plurality of sets held in batch by the multi-clip, and generating a plurality of electronic devices in batch by melting the previously applied solder and sealing the plurality of sets of packages and caps. According to the present invention, the plurality of sets of the packages and caps held in batch by the multi-clip are heated and sealed, therefore the sealing efficiency of the packages and caps can be improved.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: December 23, 2003
    Assignee: Fujitsu Media Devices Limited
    Inventors: Tetsuji Nakazawa, Yuji Ikeda, Katsuhiko Takahashi
  • Patent number: 6667933
    Abstract: When a plurality of commands are received in succession to read/write data from/to memory cells in accordance with the combination of these commands, a word line for controlling the transfer switches of the memory cells are activated after the reception of one of the commands excluding the first command. This allows control circuits for activating the word lines to be operated at a lower frequency than heretofore, with a reduction in power consumption. Moreover, the word lines are activated based on an address signal that is supplied along with the first command as well as a part of an address signal supplied along with one of the commands excluding the first command. Consequently, the memory region to be selected by these address signals can be smaller, with a reduction in power consumption.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: December 23, 2003
    Assignee: Fujitsu Limited
    Inventor: Hiroyoshi Tomita
  • Patent number: 6668202
    Abstract: A position control system includes a PID controller for generating a current target value of a linear motor from a difference between a positional detected value and a positional command value, and a disturbance observer. The disturbance observer includes a signal processing unit comprising a filter for filtering a torque command value for a motor drive and an input torque estimating filter carrying out estimation for obtaining an estimated input load torque from the detected positional value. An inverse model of a motor torque constant calculates an estimated disturbance load torque from the difference between the filtered torque command value and the estimated input load torque and generates a correction value for the current target value so as to cancel a disturbance torque on the basis of the estimated disturbance load torque being calculated.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: December 23, 2003
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Kenichi Makino, Masayuki Yamamoto, Yoshiyuki Tomita
  • Patent number: 6664795
    Abstract: A remaining charge detecting system of an electric double layer capacitor to be usable, for example, as an energy source of a hybrid vehicle having an internal combustion engine and an electric motor separately driving wheels. The system includes a current-voltage sensor which generates an output indicative of a terminal voltage across terminals of the capacitor and an output indicative of charge/discharge current charged into and discharged from the capacitor and an electronic control unit, comprising a microcomputer, which inputs the outputs of the current-voltage sensor indicative of the terminal voltage and charge/discharge current and calculates a remaining charge of the capacitor based on a state equation (mathematical model) having the remaining charge of the capacitor as a state variable and an observer that observes the state equation, thereby enabling simple and accurate detection of the remaining charge of the electrical double layer capacitor without need for a high-precision current sensor.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: December 16, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yutaka Tamagawa, Nobuyuki Imai
  • Patent number: 6665571
    Abstract: A method for selecting a container model for component parts capable of selecting the most profitable, optimum container model for component parts such as vehicle component parts is provided. After calculating the total expenses of all different container models, the method selects the most inexpensive, optimum container model by comparing the total expenses in predetermined years thus calculated with each other and with the total expense in predetermined years of a disposable container.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: December 16, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Nobuyoshi Kiyohara, Yoshihei Iwai, Makoto Arai, Tatsuo Koyama, Hidekazu Takahashi, Yoshinori Kuroda
  • Patent number: 6664638
    Abstract: A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: December 16, 2003
    Assignee: Fujitsu Limited
    Inventors: Kenichi Ushiyama, Shigenori Ichinose
  • Patent number: 6664125
    Abstract: A method of manufacturing a solid-state image pickup device including the steps of preparing a package including a housing section to house a solid-state image pickup element chip and an opening section in an upper section thereof, sporadically applying adhesive with a predetermined thickness on a bottom surface of the housing section, moving the solid-state image pickup element toward the housing section, an upper surface of the package and an upper surface of the element each having desired parallelism with respect to a predetermined reference surface with high precision, bringing a rear surface of the solid-state image pickup element into contact with the adhesive and stopping the movement of the element before the element comes into contact with the bottom surface of the housing section, curing the adhesive while the solid-state image pickup element is floating on the adhesive and fixing the element in the housing section.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: December 16, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiji Watanabe, Takeshi Nishida
  • Patent number: 6663735
    Abstract: A method of inflation able to prevent peeling of an inner layer in a process of molding accompanied with inflation and deformation, in particular, a method of molding a hollow composite by giving deformation toward an inner surface of at least one composite member so as to cause it to laminate with another composite member, comprising giving the deformation and performing the molding by a pressurizing and heating medium.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: December 16, 2003
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yoshiaki Hashimura, Ichiro Takasu
  • Patent number: 6665700
    Abstract: In a distributed-memory multiprocessor system in which a plurality of processors have their respective memories, some of the processors are placed in redundant execution of writing into a virtual storage space. At redundant execution, each processor makes a determination of whether or not it is to perform the writing. As a consequence, only a single processor is allowed to write data into the virtual storage space, which solves the data transfer overhead problem. If a processor that has a memory with an area to be written into performs the writing, then the speed of processing will be further increased.
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: December 16, 2003
    Assignee: Fujitsu Limited
    Inventors: Yoshinori Sugisaki, Katsunori Takayama
  • Patent number: 6664338
    Abstract: Fluoroelastomers curable by ionic route based on vinylidene fluoride (VDF) comprising: a) 100 parts by weight of fluoroelastomer based on vinylidene fluoride (VDF) substantially polar end group free; b) from 0.05 to 5 phr of accelerant; c) from 0.5 to 15 phr of curing agent; d) from 1 to 40 phr of one or more inorganic acid acceptors, preferably bivalent metal oxides; e) from 0 to 2.5 phr, preferably from 0 to 1.5 phr of one or more basic compounds preferably hydroxides of bivalent metals or of weak acid metal salts; f) from 0 to 80 phr of reinforcing fillers.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: December 16, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Anna Staccione, Margherita Albano
  • Patent number: 6665810
    Abstract: An interface controller adaptively changes the data transfer rate of data being transferred between two or more devices depending on whether one of the devices is powered by an internal power supply and on the destination of the data. The controller includes a clock generator that generates a clock signal, a transfer unit that performs one of a first data transfer and a second data transfer at a transfer rate based on the clock signal, and a control circuit for adaptively changing the frequency of the clock signal depending on whether the first or second data transfer is to be performed.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: December 16, 2003
    Assignee: Fujitsu Limited
    Inventor: Yasushi Sakai
  • Patent number: 6665255
    Abstract: There is provided a recording reproducing apparatus which is ready for use of recording media different in form and mode. The apparatus is comprised of a mounting member 5 in a rotatable manner toward a clamping position CL, another mounting member 6 arranged in the mounting member 5 in a rotatable manner, cam members 11, 12 for rotating the mounting member 5, and a cam block 32 for rotating the mounting member 6. The mounting member 5 mounts thereon a turn table 2 for clamping the recording medium, and an optical pickup 3, and the mounting member 6 mounts thereon another optical pickup 4. When an open recording medium DS is inserted, the mounting members 5, 6 are rotated to be horizontal to the clamping position CL, whereby the optical pickup 4 carries out recording or reproduction of information.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: December 16, 2003
    Assignee: Pioneer Corporation
    Inventors: Akiyoshi Inoue, Yasumitsu Suzuki
  • Patent number: D484169
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: December 23, 2003
    Assignee: Eastman Chemical Company
    Inventor: Martin Bone
  • Patent number: D484170
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: December 23, 2003
    Assignee: Eastman Chemical Company
    Inventor: Rico Zorkendorfer
  • Patent number: D484172
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: December 23, 2003
    Assignee: Eastman Chemical Company
    Inventor: Kara Johnson