Patents by Inventor Junji Ito

Junji Ito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100105547
    Abstract: [Object] To provide an oxidation catalyst composition excellent in low temperature activity and a PM oxidation catalyst which can oxidize or burn particulate and the like from an internal combustion engine even at relatively low temperatures. [Solving Means] An oxidation catalyst composition contains cerium, manganese, and a metal M (M is a trivalent metal element excluding cerium). When the oxidation catalyst composition is analyzed by XPS so that orbital energies are subjected to peak separation using the Gaussian function, the Ce4+/Ce3+ atomic weight ratio (atomic % ratio) is 1.7 or higher and Mn2+ is in an amount of 5 atomic % or larger, wherein at least a part of the oxidation catalyst composition forms a composite. The above-mentioned metal M is ytterbium, thulium, erbium, holmium, dysprosium, gadolinium, europium, samarium, promethium, neodymium, praseodymium, scandium, yttrium, aluminum, gallium and/or the like.
    Type: Application
    Filed: April 17, 2008
    Publication date: April 29, 2010
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Junji Ito, Yasunari Hanaki, Kouji Masuda
  • Patent number: 7683712
    Abstract: A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change in the power gain at the output node does not travel back to the input node when the load impedance of the wireless frequency power amplifier varies, it is possible to detect only the change in the load impedance. Damage to the final stage can be prevented by controlling the operating current of the final stage and the gain of the drive stage according to the detected load variation. Nonlinear distortion in the wireless frequency power amplifier output can also be reduced by detecting and canceling the change in the gain of the drive stage by changing the gain of the adjustment stage.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: March 23, 2010
    Assignee: Panasonic Corporation
    Inventors: Hidefumi Suzaki, Junji Ito, Fumiya Kamimura, Shigeki Nakamura
  • Publication number: 20100028221
    Abstract: A fibrous structure (10) of the present invention includes: long fibers (1) composed of an inorganic material; and short fibers (2) composed of the inorganic material and shorter than the long fibers (1), wherein at least one of the long fibers (1) and the short fibers (2) includes catalyst components (4), and a three-dimensional net-like structure is formed by the long fibers (1) and the short fibers (2).
    Type: Application
    Filed: September 12, 2007
    Publication date: February 4, 2010
    Inventors: Masahiro Takaya, Kouji Masuda, Junji Ito, Toshiharu Miyamura, Yasunari Hanaki
  • Publication number: 20090234359
    Abstract: A mechanism for osteosynthesis 1 is provided that is capable of finely adjusting the amount of movement of a fractured bone, quantifying the amount of the movement and can be used both in pulling the fractured bones apart from each other and pulling the fractured bones nearer toward each other.
    Type: Application
    Filed: November 29, 2006
    Publication date: September 17, 2009
    Inventors: Hidetoshi Onoue, Junji Ito, Toru Ikeda
  • Patent number: 7576612
    Abstract: The present invention provides a power amplifier that includes the following: an RF operation transistor 3 having a base to which an RF signals is inputted, an emitter connected to the ground, and a collector connected to a power supply and a terminal for outputting an RF signal; a current reference transistor 12 having a collector connected to a reference current source 11, an emitter connected to the ground, and a base connected to the base of the RF operation transistor, an operational amplifier 22 formed of CMOS having one input connected to the collector of the current reference transistor and the other input connected to the base of the RF operation transistor; and a voltage-to-current conversion transistor 22 for converting the output of the operational amplifier 22 into a current to be supplied to the base of the RF operation transistor.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: August 18, 2009
    Assignee: Panasonic Corporation
    Inventors: Shigeki Nakamura, Junji Ito
  • Publication number: 20090152510
    Abstract: The present invention provides polarized electrodes that ensure a satisfactory packing ratio of activated carbon particles and conductive particulates and favorable contact between these and an electrolyte, and demonstrate high capacitance. The present invention relates to the following electrode materials for polarized electrodes: (1) electrode materials for polarized electrodes containing a rubber-based emulsion, activated carbon particles, conductive particulates, and a surfactant; and (2) electrode materials for polarized electrodes containing a dispersion of polytetrafluoroethylene, activated carbon particles, conductive particulates, and a surfactant, wherein the solid content is 25% by weight or more.
    Type: Application
    Filed: February 11, 2009
    Publication date: June 18, 2009
    Inventor: Junji Ito
  • Patent number: 7525387
    Abstract: An amplifier circuit includes a first bipolar transistor of which the emitter is connected to the ground, and a bias circuit of the first bipolar transistor. The bias circuit includes a second bipolar transistor constituting a current mirror circuit along with the first bipolar transistor, a first resistor connected to the bases of the first bipolar transistor and the second bipolar transistor, and a third bipolar transistor of which the emitter is connected to the bases of the first bipolar transistor and the second bipolar transistor through the first resistor, and of which the base is connected to the collector of the second bipolar transistor. The first bipolar transistor amplifies a signal input to the base thereof and then outputs the amplified signal from the collector of the first bipolar transistor.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: April 28, 2009
    Assignee: Panasonic Corporation
    Inventors: Zaman Iqbal Kazi, Junji Ito, Toshihiro Shogaki
  • Patent number: 7491352
    Abstract: The present invention provides polarized electrodes that ensure a satisfactory packing ratio of activated carbon particles and conductive particulates and favorable contact between these and an electrolyte, and demonstrate high capacitance. The present invention relates to the following electrode materials for polarized electrodes: (1) electrode materials for polarized electrodes containing a rubber-based emulsion, activated carbon particles, conductive particulates, and a surfactant; and (2) electrode materials for polarized electrodes containing a dispersion of polytetrafluoroethylene, activated carbon particles, conductive particulates, and a surfactant, wherein the solid content is 25% by weight or more.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: February 17, 2009
    Inventor: Junji Ito
  • Publication number: 20090011727
    Abstract: A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of amplification, the transmit RF signal is input to an input of a first one of the plurality of stages of amplification, and an output of a last one of the plurality of stages of amplification is output to the transmission antenna. The detector section includes a plurality of detectors provided so as to correspond to the plurality of stages of amplification, each for detecting an input level of a corresponding one of the stages of amplification, and a synthesizer for synthesizing together detection outputs from the plurality of detectors. The control section controls, in a feedback control, an output level of the RF power amplification section based on an output level of the synthesizer.
    Type: Application
    Filed: January 15, 2008
    Publication date: January 8, 2009
    Inventors: Shigeki Nakamura, Fumiya Kamimura, Junji Ito, Hidefumi Suzaki
  • Publication number: 20080318771
    Abstract: A particulate matter oxidizing catalyst includes: at least one metal selected from the group consisting of: gallium, manganese, iron, cobalt, nickel, copper, yttrium, zirconium, niobium, molybdenum, silver, lanthanum, praseodymium, neodymium and gold; and cerium, wherein a first oxide includes: the cerium, and a first metal which is at least one element selected from the group consisting of: gallium, manganese, iron, cobalt and nickel, wherein a second oxide includes: the cerium, and a second metal which is at least one element selected from the group consisting of: praseodymium, zirconium and aluminum, and wherein the second oxide and the first oxide have a content ratio of second oxide/(first oxide+second oxide)=0.1 by mass to 0.8 by mass.
    Type: Application
    Filed: November 7, 2007
    Publication date: December 25, 2008
    Inventors: Maki Shimada, Junji Ito, Toshiharu Miyamura, Yasunari Hanaki, Shigeru Chida, Shinichi Akaishi
  • Patent number: 7459947
    Abstract: When a signal of a double frequency is generated from the original signal, conventionally a 90-degree phase-shift circuit is necessary to suppress an output of a DC component and efficiently obtain a double wave. According to the present invention, an equal RF signal is inputted to input terminals and an output is matched with a frequency as high as that of the original frequency in a Gillbert cell double-balanced mixer, so that a doubled output is obtained with no DC offset. According to the circuit configuration of the present invention, it is possible to provide a circuit readily performing integration and to efficiently output only a double frequency merely by inputting a simple differential signal without the need for the original signal which has been phase controlled. Further, a DC short circuit in the resonance circuit makes it possible to eliminate a DC offset voltage in an output.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: December 2, 2008
    Assignee: Panasonic Corporation
    Inventor: Junji Ito
  • Publication number: 20080261651
    Abstract: In a multi-mode communication apparatus including independent transmitter circuits and receiver circuits of a W-CDMA system and a GSM system, which are capable of complying with communication systems of the W-CDMA system and the GSM system, a first switching device is connected between a ground and an input terminal of a first low-noise amplifier of the receiver circuit of the W-CDMA communication system, and is selectively turned on and off in accordance with a first control signal. A second switching device is connected between the ground and an input terminal of a second low-noise amplifier of the receiver circuit of the GSM communication system, and is selectively turned on and off in accordance with a second control signal. A control circuit generates and outputs first and second control signals for controlling turning-on and -off of the first and second switching devices, respectively.
    Type: Application
    Filed: January 15, 2008
    Publication date: October 23, 2008
    Inventors: Yusuke NAKAHASHI, Naoki OKAMOTO, Junji ITO
  • Publication number: 20080231368
    Abstract: A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change in the power gain at the output node does not travel back to the input node when the load impedance of the wireless frequency power amplifier varies, it is possible to detect only the change in the load impedance. Damage to the final stage can be prevented by controlling the operating current of the final stage and the gain of the drive stage according to the detected load variation. Nonlinear distortion in the wireless frequency power amplifier output can also be reduced by detecting and canceling the change in the gain of the drive stage by changing the gain of the adjustment stage.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 25, 2008
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hidefumi Suzaki, Junji Ito, Fumiya Kamimura, Shigeki Nakamura
  • Publication number: 20080143445
    Abstract: The present invention provides a power amplifier that includes the following: an RF operation transistor 3 having a base to which an RF signals is inputted, an emitter connected to the ground, and a collector connected to a power supply and a terminal for outputting an RF signal; a current reference transistor 12 having a collector connected to a reference current source 11, an emitter connected to the ground, and a base connected to the base of the RF operation transistor, an operational amplifier 22 formed of CMOS having one input connected to the collector of the current reference transistor and the other input connected to the base of the RF operation transistor; and a voltage-to-current conversion transistor 22 for converting the output of the operational amplifier 22 into a current to be supplied to the base of the RF operation transistor.
    Type: Application
    Filed: December 18, 2007
    Publication date: June 19, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Shigeki NAKAMURA, Junji Ito
  • Patent number: 7386293
    Abstract: In a receiving circuit, an antenna 11 receives a high-frequency signal at a predetermined frequency band, a level changing section 13 changes a signal level of the high-frequency signal received by the antenna, a subsequent-stage circuit 14 performs predetermined signal processing for the high-frequency signal whose signal level is changed at the level changing section 13, a detecting section 32 detects a signal level of the high-frequency signal for which the signal processing is performed by the subsequent-stage circuit 14, and a control section 33 sets a rate of change of the high-frequency signal by the level changing section 13, based on the signal level of the high-frequency signal detected by the detecting section 32, so that the signal level of the high-frequency signal detected by the detecting section 32 does not exceed a predetermined value.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: June 10, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naoki Okamoto, Junji Ito
  • Patent number: 7384889
    Abstract: An exhaust gas purifying catalyst of the present invention contains alumina, and ceria loading palladium and platinum, and the ratio of palladium (IV) oxide to palladium (II) oxide by peak separation of the 3d orbital of palladium in X-ray photoelectron spectroscopy is within a range from 70:30 to 99:1. Thereby, the catalyst is capable of reducing the CO concentration and increasing the H2 concentration in an exhaust gas even after durability at high temperature.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: June 10, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Junji Ito
  • Publication number: 20080132409
    Abstract: Herein is provided a fibrous catalyst having a catalytic layer containing particles comprising ceria CeO2, with an average particle size of 1 nm to 1 ?m. The layer is coated on the surface of a ceramic fiber. Accordingly, flexibility of the surface of the catalytic layer is improved due to the decreased interaction between the particles due to their minute size. Because flexibility is improved, vibration and deformation does not deteriorate the layer, and as such, the peeling-resistance property is improved.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 5, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Junji Ito, Masahiro Takaya, Toshiharu Miyamura, Takeshi Yamauchi
  • Publication number: 20080054955
    Abstract: When a signal of a double frequency is generated from the original signal, conventionally a 90-degree phase-shift circuit is necessary to suppress an output of a DC component and efficiently obtain a double wave. According to the present invention, an equal RF signal is inputted to input terminals and an output is matched with a frequency as high as that of the original frequency in a Gillbert cell double-balanced mixer, so that a doubled output is obtained with no DC offset. According to the circuit configuration of the present invention, it is possible to provide a circuit readily performing integration and to efficiently output only a double frequency merely by inputting a simple differential signal without the need for the original signal which has been phase controlled. Further, a DC short circuit in the resonance circuit makes it possible to eliminate a DC offset voltage in an output.
    Type: Application
    Filed: June 26, 2007
    Publication date: March 6, 2008
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventor: Junji Ito
  • Publication number: 20080012097
    Abstract: A semiconductor device has a semiconductor substrate; a shielding element formed by a conductor on a top side of the semiconductor substrate; an active element formed by a conductor and a semiconductor on the top side of the semiconductor substrate; a dielectric layer formed between the shielding element and the active element to electrically isolate the shielding element and the active element. The shielding element includes a first conductor layer formed as a flat plate, and a first external contact that is formed on the top side of the first conductor layer and is connected to the first conductor layer; and the active element includes a second conductor layer that is formed between the semiconductor substrate and the first conductor layer, and is connected to the semiconductor substrate.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 17, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hisashi Takahashi, Junji Ito, Hiroki Kojima
  • Publication number: 20080001675
    Abstract: An amplifier circuit includes a first bipolar transistor of which the emitter is connected to the ground, and a bias circuit of the first bipolar transistor. The bias circuit includes a second bipolar transistor constituting a current mirror circuit along with the first bipolar transistor, a first resistor connected to the bases of the first bipolar transistor and the second bipolar transistor, and a third bipolar transistor of which the emitter is connected to the bases of the first bipolar transistor and the second bipolar transistor through the first resistor, and of which the base is connected to the collector of the second bipolar transistor. The first bipolar transistor amplifies a signal input to the base thereof and then outputs the amplified signal from the collector of the first bipolar transistor.
    Type: Application
    Filed: June 7, 2007
    Publication date: January 3, 2008
    Inventors: Zaman Kazi, Junji Ito, Toshihiro Shogaki