Patents by Inventor Kenji Itoh

Kenji Itoh 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).

  • Patent number: 6609491
    Abstract: There is provided a multi-cylinder engine having an intake manifold that includes a plurality of induction pipes which are each connected at, one end thereof, to a cylinder head the induction pipes extending away from the cylinder head and being curved to extend along a side of a cylinder block, and thereafter being curved further to approach the cylinder block to finally extend toward the respective one end sides of the induction pipes. In the multi-cylinder engine, a starter motor is disposed in a gap defined between the intake manifold and the cylinder block.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: August 26, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kenji Itoh, Manabu Komura, Masayoshi Mori
  • Patent number: 6606465
    Abstract: When any of the functions: copier function, printer function and facsimile function, are not being performed, the function information display portion provides display messages ‘Copier available’, ‘Printer available’ and Fax available’, using the display areas equal in size, arranged in the vertical direction. When a print request is given from an external apparatus, the function information display portion provides a display message ‘Printer function engaged’ along with the image processing operating conditions and provides display messages ‘Copier function partly available’ and ‘Facsimile function partly available’ in the left and right halves of the display section. While the printer function is in progress, the information relating to the printer function is displayed in the display area four times as large as that for the copier function and that for the facsimile function.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: August 12, 2003
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Mutoh, Masao Murakami, Kenji Itoh
  • Patent number: 6600911
    Abstract: If a local oscillation wave of a frequency approximately half the received signal frequency is input to a low noise amplifier 2, a dc offset voltage caused by the nonlinearity of the amplifier is produced, thus degrading reception sensitivity. This problem is resolved by disposing before the low noise amplifier 2 a filter means, such as a bandpass filter 12, band-elimination filter 13, or high pass filter 14, with characteristics for passing the received wave and suppressing a frequency band at approximately half the received wave frequency, thus preventing a radiation wave at substantially the same frequency as the local oscillation wave from being input to the low noise amplifier 2. A filter circuit 15 is also provided in the low noise amplifier 2 as a means for eliminating a radiation wave input to the low noise amplifier 2.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: July 29, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hideki Morishige, Hiroshi Ikematsu, Kenji Itoh
  • Patent number: 6583481
    Abstract: An abrasion-proof and static-erasing coating is formed on the contact surface of a contact image sensor. The coating comprises a first film having a high hardness and a low conductivity, a second film formed on the first film and having a low hardness and a high conductivity, and a third film having a high hardness and a high resistivity providing an abrasion-proof insulating external surface.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: June 24, 2003
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Kenji Itoh
  • Patent number: 6553647
    Abstract: A method of wiring a head suspension assembly includes fixing a tube binding a plurality of wires on a suspension assembly, and fixing the wires extending from the fixed tube on the suspension while leading them to a top side of the suspension. The suspension has a tab frame with first and second frames. Each wire led to the top side of the suspension is bonded to the second frame of a tab frame. An insulation film is removed from each connecting portion of the wires to connect the wires to respective connecting pads of the slider. A first frame is bent substantially perpendicular to the suspension, and the second frame is bent substantially perpendicular to the first frame, thereby positioning the wires bonded to the second frame at the connecting pads on the slider. The wires are then ultrasonically welded to the respective connecting pads on the slider.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: April 29, 2003
    Assignee: International Business Machines Corporation
    Inventors: Kenji Itoh, Hiroyasu Tsuchida, Tatsushi Yoshida, Yoskio Uematsu, Tetsuji Ono
  • Publication number: 20030010806
    Abstract: The present invention enhances the reliability of wire-bonding strength by reducing a variation in the entire transformation amount of a wire. At point P1, a bonding wedge 21 abuts the wire 71, whereby a load is exerted on the wire 71. The wire 71 transforms by an amount of transformation A, and the transformation stops at point P2. The transformation amount A varies greatly. At point P3 (T1), ultrasonic wave vibration is exerted and the transformation of the wire 71 is restarted. At this stage, a variation in the transformation amount A is absorbed by an amount of transformation B and therefore a variation in the transformation amount A+B becomes small. At point P4 (T1+T2), the transformation amount A+B is maintained substantially constant. At this point P4, the transformation amount of the wire 71 is set to 0 and the measurement of the transformation amount of the wire 71 is started.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 16, 2003
    Inventors: Kenji Itoh, Naoki Kurosu, Yohtaroh Ichimura, Tatsushi Yoshida
  • Patent number: 6493189
    Abstract: A head gimbal assembly is provided with a slider that flies above the surface of a disk, and a head for reading/writing data from/onto the surface of the disk. One or more conductive wires are connected to the head and are used to transmit data. A load beam supports the wire(s) thereon and holds the head/slider near a front end of the load beam. Each wire forms a wire loop between the head connecting point edge and the wire fixing point. A predetermined portion of each wire loop is pressed from above on the surface of the load beam, and then pushed toward the head connecting point edge, thereby plastically deforming a section between the head connecting point edge and the predetermined portion of the wire loop.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: December 10, 2002
    Assignee: International Business Machines Corporation
    Inventors: Kenji Itoh, Yasuhiro Mita, Masaaki Nanba, Tatsushi Yoshida
  • Patent number: 6468617
    Abstract: In an apparatus for fabricating a carbon coating, an object such as a magnetic recording medium is disposed on a side of an electrode connected to a high-frequency power supply. Ultrasonic vibrations are supplied to the object. Discharge is generated between the electrode connected to the high-frequency power supply and a grounded electrode to fabricate a carbon coating on the surface of the object. Also, an electrode interval is set to 6 mm or less, pressure between the electrodes is set to 15 Torr to 100 Torr, whereby high-density plasma is generated to form an ion sheath on an anode side. Therefore, a coating is fabricated on the surface of the object by bombardment of ions.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: October 22, 2002
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenji Itoh, Shigenori Hayashi
  • Patent number: 6461968
    Abstract: A method for fabricating a semiconductor device including a semiconductor layer structure, a source electrode and, a drain electrode formed on the semiconductor layer structure, and a source interconnection connected to the source electrode is provided. The method includes the steps of: (a) forming the semiconductor layer structure on a substrate; (b) forming a metal layer structure so as to cover the semiconductor layer structure; (c) forming a resist layer having a predetermined pattern on the metal layer structure: (d) performing a first etching process for the metal layer structure using the resist layer as a mask so as to form the source electrode, the drain electrode and the source interconnection; and (e) performing a second etching process for the semiconductor layer structure using the resist layer as a mask so as to form a transistor gap portion between the source electrode and the drain electrode.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: October 8, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Motohiro Toyota, Kenji Itoh
  • Patent number: 6449471
    Abstract: In a cellular telephone having a receiving circuit of a direct conversion type using an even harmonic orthogonal mixer, high-pass filters for removing a DC offset component are arranged before and after a variable gain amplifier in a base band circuit. The DC offset component occurred in the even harmonic orthogonal mixer is always constant, and the DC offset component occurred in the variable gain amplifier frequently varies so that a cutoff frequency of the front high-pass filter is set to be lower than a cutoff frequency of the rear high-pass filter, and the frequencies are set to achieve a fast transition response.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: September 10, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takatoshi Katsura, Kenji Itoh, Shinjirou Fukuyama, Mitsuru Mochizuki, Hiroaki Nagano, Yoshinori Matsunami, Mitsuhiro Shimozawa, Fumio Ishizu, Ryoji Hayashi
  • Patent number: 6383310
    Abstract: An exhaust equipment member having an exhaust gas path portion at least partially having a thickness of 5 mm or less is made of a heat-resistant, high-Cr, high-Ni, austenitic cast steel having weight ratios of Cr/Ni of 1.0-1.5 and Mn/S of 5 or more a composition by weight of 0.2-1.0% of C, 2% or less of Si, 2% or less of Mn, 0.04% or less of P, 0.05-0.25% of 5, 20-30% of Cr, and 16-30% of Ni, the balance being substantially Fe and inevitable impurities, with a weight loss by oxidation of 50 mg/cm2 or less when kept in the air at 10100 C. for 200 hours.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: May 7, 2002
    Assignee: Hitachi Metals, Ltd.
    Inventors: Koki Otsuka, Kenji Itoh, Keijiro Hayashi, Norio Takahashi
  • Patent number: 6373907
    Abstract: At the onset of an operation, a level of a base band signal at an input side of a variable gain amplifying circuit is detected by a logarithmic amplifier having a wide dynamic range, and, a control unit controls a gain of a low-noise amplifier in a previous step of a low-pass filter based on the detected level and also controls a gain of variable gain amplifier, whereby saturation at an analog base band portion is prevented even when the level of the input signal is high.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: April 16, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takatoshi Katsura, Kenji Itoh, Shinjirou Fukuyama, Mitsuru Mochizuki, Hiroaki Nagano, Yoshinori Matsunami, Fumio Ishizu, Ryoji Hayashi
  • Patent number: 6369278
    Abstract: There are provided: (I) a process for preparing an extract containing at least one hydroperoxide, which comprises the steps of: (1) oxidizing an aromatic hydrocarbon substituted with an alkyl group to obtain a liquid reaction mixture, and (2) extracting at least one hydroperoxide in the liquid reaction mixture to obtain an extract having a concentration of acetone of not more than 1% by weight: and (II) a process for preparing an extract containing at least one hydroperoxide, which comprises the steps of, (1) oxidizing an aromatic hydrocarbon substituted with an alkyl group to obtain a liquid reaction mixture, and (2) extracting at least one hydroperoxide with an aqueous alkali solution having an A value of not more than 10 to obtain an extract.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: April 9, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoyuki Noritake, Shigeru Goto, Kenji Itoh
  • Publication number: 20020035980
    Abstract: There is provided a multi-cylinder engine having an intake manifold comprising a plurality of induction pipes which are connected to a cylinder head at one ends thereof and at the other ends thereof extend to be away from the cylinder head, are then curved to extend along a side of a cylinder block, are curved further to approach the cylinder block and finally extend toward the one ends side. In the multi-cylinder engine, a starter motor is disposed in a gap defined between the intake manifold and the cylinder block.
    Type: Application
    Filed: September 24, 2001
    Publication date: March 28, 2002
    Inventors: Kenji Itoh, Manabu Komura, Masayoshi Mori
  • Publication number: 20020037702
    Abstract: A reception carrier wave, of which a frequency fL0 agrees with a frequency fRX of a reception wave, is generated, a first transmission carrier wave, of which a frequency fL1 is equivalent to twice of a difference value between the reception frequency and a frequency fTX of a transmission wave, is generated, and a second transmission carrier wave of which a frequency fL2 is equivalent to a difference value between the frequency fL0 and the frequency fL1, is generated. The reception carrier wave mixed with the reception wave to produce a reception signal. The frequency of the first transmission carrier wave is halved, and the first transmission carrier wave is mixed with a transmission signal to produce a modulated wave. The second transmission carrier wave is mixed with the modulated wave to produce a transmission wave.
    Type: Application
    Filed: October 3, 2001
    Publication date: March 28, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroaki Nagano, Kazuhiro Mori, Kenji Itoh
  • Patent number: 6355122
    Abstract: A set of bonding pads are ultrasonically connected to a set of leads. The bonding pads are formed on a predetermined plane of a slider held by a slider holder accessible to the recording plane of a disk in a disk drive. The leads are held by the slider holder and have joints that are formed so as to respectively face each of the bonding pads. A front end plane of a wedge working on the joints is tilted in a direction in which the first sides of the joints correspond to external connection sides. The ultrasonic connection is completed by pressing the joints of the leads against the faced boding pads.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: March 12, 2002
    Assignee: International Business Machines Corporation
    Inventors: Kenji Itoh, Naoki Kurosu, Yohtaroh Ichimura, Tatsushi Yoshida
  • Patent number: 6324385
    Abstract: A reception carrier wave, of which a frequency fL0 agrees with a frequency fRX of a reception wave, is generated, a first transmission carrier wave, of which a frequency fL1 is equivalent to twice of a difference value between the reception frequency and a frequency fTX of a transmission wave, is generated, and a second transmission carrier wave of which a frequency fL2 is equivalent to a difference value between the frequency fL0 and the frequency fL1, is generated. The reception carrier wave is mixed with the reception wave to produce a reception signal. The frequency of the first transmission carrier wave is halved, and the first transmission carrier wave is mixed with a transmission signal to produce a modulated wave. The second transmission carrier wave is mixed with the modulated wave to produce a transmission wave.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: November 27, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroaki Nagano, Kazuhiro Mori, Kenji Itoh
  • Patent number: 6322164
    Abstract: The pump is connected on its delivery side through an auxiliary passage to a primary passage connecting the master cylinder and brake cylinder to each other, and a pressure control valve is provided in a portion of the primary passage between the master cylinder and a point of connection thereof to the auxiliary passage. The pressure control valve releases working fluid from the pump to the master cylinder when delivery pressure of the pump is higher than the master cylinder pressure by more than a predetermined amount, and the pump is activated when the fluid pressure generated in the brake cylinder is required to be higher than the master cylinder pressure, during brake operation.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: November 27, 2001
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeru Sakamoto, Yutaka Ohnuma, Kenji Itoh, Masakuni Suzuki, Kouichi Sawada, Hiroshi Isono, Noboru Noguchi
  • Patent number: 6319109
    Abstract: A disk-shaped grindstone including a base disk and an abrasive layer which is bonded to the base disk. The base disk is provided by a rapidly-solidified aluminum alloy whose major component is Si, wherein the rapidly-solidified aluminum alloy includes 15 wt %-40 wt % of the Si, 0.5 wt %-6 wt % of Cu, 0.2 wt %-3 wt % of Mg, and the balance consisting principally of aluminum. The ratio of a tensile strength of the base disk to a specific gravity of the base disk (tensile strength/specific gravity) is not smaller than 90. The ratio of a fatigue strength of the base disk to the specific gravity of the base disk (fatigue strength/specific gravity) is not smaller than 30.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: November 20, 2001
    Assignee: Noritake Co., Limited
    Inventors: Tsuyoshi Fujii, Takeshi Nonogawa, Kenji Itoh
  • Patent number: 6299957
    Abstract: In an apparatus for fabricating a carbon coating, an object such as a magnetic recording medium is disposed on a side of an electrode connected to a high-frequency power supply. Ultrasonic vibrations are supplied to the object. Discharge is generated between the electrode connected to the high-frequency power supply and a grounded electrode to fabricate a carbon coating on the surface of the object. Also, an electrode interval is set to 6 mm or less, pressure between the electrodes is set to 15 Torr to 100 Torr, whereby high-density plasma is generated to form an ion sheath on an anode side. Therefore, a coating is fabricated on the surface of the object by bombardment of ions.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: October 9, 2001
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenji Itoh, Shigenori Hayashi