Patents by Inventor Kenji Ito

Kenji 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).

  • Patent number: 7985025
    Abstract: A bearing sleeve 8 is press-fitted into a housing 7, and an axial portion 2a of an axial member 2 is inserted into the inner peripheral surface 8a of the bearing sleeve 8, and then a thrust member 10 is attached to the lower end of the inner peripheral surface 7c of the housing 7 and positioned in a predetermined position to fix it by ultrasonic welding. The lower end of the housing 7 is pressed against the outer peripheral surface of the thrust member 10 with applying ultrasonic vibration, to fix the melting junction surface of the housing 7 on the thrust member 10.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: July 26, 2011
    Assignee: NTN Corporation
    Inventors: Fuminori Satoji, Kenji Ito
  • Patent number: 7985351
    Abstract: A liquid crystalline polyester resin composition comprising 100 parts by weight of a liquid crystalline polyester; 50 to 150 parts by weight of at least one whisker selected from aluminum borate whisker and titanium oxide whisker; and 1 to 30 parts by weight of carbon black having a specific surface area of at least 200 m2/g. This liquid crystalline polyester resin composition has excellent mechanical properties and provides an insulator which is hardly charged.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: July 26, 2011
    Assignees: Sumitomo Chemical Co., Ltd., NTN Corporation
    Inventors: Hiroyasu Yamauchi, Mitsuo Maeda, Fuminori Satoji, Kenji Ito
  • Patent number: 7969206
    Abstract: A drive circuit for driving a semiconductor element according to an input signal includes an output stage, a clamp circuit, a comparator, and a clamp control circuit. The output stage includes a series circuit of two transistors. A node between the transistors is coupled to a control terminal of the semiconductor element. One of the transistors is turned on when the input signal indicates that the semiconductor element is driven. The clamp circuit clamps a potential of the control terminal to a level enough to drive the semiconductor element when the one of the transistors is turned on. The comparator compares a power supply voltage of the drive circuit with a threshold voltage. The clamp control circuit disables the clamp circuit when the power supply voltage is less than the threshold voltage.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: June 28, 2011
    Assignee: DENSO CORPORATION
    Inventor: Kenji Ito
  • Publication number: 20110130498
    Abstract: The invention provides a flame retardant resin composition containing a polyalkylene furan dicarboxylate represented by the following formula (1), an aromatic polycarbonate, a phosphazene compound represented by the following formula (2) and a fluorine-containing compound: wherein m and n1 are each an integer of 2 or more; wherein n2 is an integer of 2 or more, and R1 and R2 are each an alkyl group having 1 to 20 carbon atoms or an aryl group.
    Type: Application
    Filed: November 1, 2010
    Publication date: June 2, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Shinagawa, Sumire Kubota, Atsushi Fuseya, Katsuhiro Matsuda, Kenji Ito
  • Publication number: 20110124839
    Abstract: The invention provides a production process of a flame-retardant polyester copolymer, having a first step of adding a catalyst to a 2,5-furan dicarboxylic acid compound, an aliphatic or alicyclic diol, itaconic acid and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to obtain an oligomer, and a second step of adding a catalyst to the oligomer obtained in the first step to conduct polycondensation, thereby obtaining the flame-retardant polyester copolymer.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 26, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Katsuhiro Matsuda, Kenji Ito, Sumire Kubota, Atsushi Fuseya, Hiroshi Shinagawa
  • Publication number: 20110102719
    Abstract: A horizontal-electric-field liquid crystal display apparatus is provided. A pair of substrates are bonded together through a sealing material. A liquid crystal is contained between the pair of substrates. A first electrode and a second electrode are formed on one of the pair of substrates. An electric field generated between the first electrode and the second electrode drives the liquid crystal. A first conductive film composed of a transparent conductive material is formed on a surface of another of the pair of substrates, the surface being opposite a surface in contact with the liquid crystal. The first conductive film is connected to a ground potential through a connection member composed of a conductive material. A second conductive film composed of a transparent conductive material is formed on a surface of the first conductive film. Also, a polarizing plate is formed on a surface of the second conductive film.
    Type: Application
    Filed: October 22, 2010
    Publication date: May 5, 2011
    Applicant: Sony Corporation
    Inventors: Kennosuke Kakehi, Kenji Ito
  • Publication number: 20110078399
    Abstract: The present invention aims to provide an apparatus capable of determining whether or not content is permitted to be taken out, by managing contents permitted to be taken out. One aspect of the invention is characterized by comprising: a storage means that stores therein taking-out-permitted-content identification data which is data generated on the basis of a part or entirety of each content permitted to be taken out; and a generating means that generates the taking-out-permitted-content identification data. Another aspect of the present invention is characterized by comprising: a storage means that stores therein taking-out-permitted-content identification data which is data generated on the basis of a part or entirety of each content permitted to be taken out to the outside; and an approving means that determines whether a content is permitted to be taken out, with reference to the taking-out-permitted-content identification data.
    Type: Application
    Filed: March 26, 2010
    Publication date: March 31, 2011
    Inventors: Satoshi Ueki, Teruaki Tanaka, Tatsuya Deji, Yuuko Akamine, Koushiro Kumagai, Kenji Ito, Sunao Todagishi
  • Patent number: 7897987
    Abstract: A light-emitting device includes a light-emitting diode, a red light-emitting phosphor layer, a yellow light-emitting phosphor layer, and a blue light-emitting phosphor layer. These layers are stacked in the stacking sequence of the yellow, blue, and red phosphor layers in order of increasing distance from the LED. The stacking sequence of the yellow and blue phosphor layers is first determined in such a manner that these layers do not interact with each other. The stacking sequence of the red and yellow phosphor layers and the stacking sequence of the red and blue phosphor layers are determined by the discriminant D. This determination of the stacking sequence suppresses a reduction in the conversion efficiency of the phosphors due to concentration quenching, improving the emission efficiency of the light-emitting device.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: March 1, 2011
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Mitsuhiro Inoue, Kenji Ito, Kazuyohi Tomita, Tetsu Kachi, Takahiro Kozawa, Satoru Kato, Tadashi Ichikawa
  • Patent number: 7876253
    Abstract: A D/A conversion circuit for performing D/A conversion at high speeds. The D/A conversion circuit includes a resistor string including a plurality of resistor elements connected between a low-potential power supply and a high-potential power supply. A plurality of first switch groups are connected to the connection nodes between the resistor elements for selectively outputting voltages at the connection nodes. The outputs of the switches of the first switch groups are connected in common to a corresponding one of the nodes. The plurality of nodes are connected to an output terminal of the D/A conversion circuit via a second switch group. Predetermined switches of the first switch groups are connected in parallel to third switches to apply voltages to the nodes.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: January 25, 2011
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Yoshiaki Shimizu, Hisao Suzuki, Kenji Ito, Masashi Kijima
  • Publication number: 20110002895
    Abstract: The object is to provide a novel use application of a dental pulp stem cell collected from a deciduous tooth or a permanent tooth. Disclosed is a composition for autotransplantation or allotransplantation, which is characterized by comprising a dental pulp stem cell collected from a deciduous tooth or a permanent tooth.
    Type: Application
    Filed: December 3, 2008
    Publication date: January 6, 2011
    Inventors: Minoru Ueda, Yoichi Yamada, Sayaka Nakamura, Kenji Ito, Yudai Nishino
  • Patent number: 7864860
    Abstract: According to the apparatus and method of the present invention, the motion vector Vij is weighted by the weighting coefficient ?ij of the motion vector Vij decided based on the AF evaluation value Iij indicating the degree of sharpness of the subject image so as to decide the entire motion vector V. For this reason, it is possible to reduce an influence on the decision of the motion vector V of the entire image exerted by the motion vector of the object of a low degree of sharpness, that is, the object not focused on.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: January 4, 2011
    Assignee: FUJIFILM Corporation
    Inventor: Kenji Ito
  • Publication number: 20100319637
    Abstract: A cast cylinder head 1 of an internal combustion engine to be mounted on a vehicle has an intake-side side wall 2i, an exhaust-side side wall 2e, and opposite end walls 3r and 3f. The walls 2i, 2e, 3r and 3f define a water jacket 8. A first cooling water exit part 11 and a second cooling water exit part 21 both having a solid structure are formed by casting integrally with one of the intake-side side wall 2i and the exhaust-side side wall 2e and with one of the end walls 3r and 3f, respectively. Cooling water exit openings 15,16 or 25,26 opening into the water jacket 8 are drilled selectively in either of the first cooling water exit part 11 and the second cooling water exit part 21 depending on the engine mounting position on the vehicle. Thus the same cylinder head can be used independently of the mounting orientation of the engine on the vehicle.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 23, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kenji ITO, Shinichiro SUGIMOTO, Kazuhiro YAMAMOTO
  • DIE
    Publication number: 20100313624
    Abstract: A die includes a stationary die, a movable die, which is opposed to the stationary die and reciprocatable in a first direction to change a distance between the stationary and movable dies, and a transfer mechanism, which transfers a workpiece, upon which plastic deformation work is performed between the stationary and movable dies, in a second direction crossing the first direction.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 16, 2010
    Applicants: DENSO CORPORATION, DENSOPREAS CO., LTD., NIPPA CORPORATION
    Inventors: Hiroyuki Dekita, Tetuo Ohno, Kenji Ito, Kazushige Matsuura
  • Publication number: 20100245830
    Abstract: In a laser machining apparatus that performs machining by a laser beam (4) emitted from a laser oscillator (1), the laser machining apparatus herein provided includes an aperture (5) placed in a light path of the laser beam (4) emitted from the laser oscillator (1) so as to block a perimeter portion of the laser beam (4) and to transmit a middle portion thereof, and a beam-power measurement sensor (6) for measuring beam power of a laser beam (20) transmitted through the aperture (5), whereby it utilizes that beam power of the laser beam transmitted through the aperture (5) significantly changes (the more degraded, the more the beam power rises) due to a degradation condition of an output mirror (2) when the output mirror in the laser oscillator (1) becomes in high thermal loading condition due to the laser beam with high beam power, so that the degradation condition of the output mirror (2) is determined.
    Type: Application
    Filed: November 20, 2007
    Publication date: September 30, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenji Ito, Takamitsu Kimura, Osami Yamaoka
  • Patent number: 7804395
    Abstract: A mobile radio communication system estimates the positional relationship between an own moving terminal and another moving terminal around a view obstruction. If the absolute value of the difference between detected reception power levels is lower than a first power threshold value, the own moving terminal determines that the other moving terminal is positioned within the visual range of the own moving terminal, the distance from the own moving terminal to the other moving terminal being shorter than a predetermined distance BP, or that the other moving terminal is positioned outside thereof, the distance to the visual range of the own moving terminal being shorter than the predetermined distance BP. Also if the absolute value is higher than or equal to the first power threshold value, the own moving terminal determines in a similar manner.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: September 28, 2010
    Assignee: Kabushiki Kaisha Toyota Chuo
    Inventors: Junya Muramatsu, Satoshi Makido, Junji Imai, Kenji Ito, Yukihiro Tadokoro
  • Patent number: 7798721
    Abstract: The present invention provides a fluid dynamic bearing device having high durability and capable of being produced at low cost. In the fluid dynamic bearing device, a housing and a disc hub are resin molded parts, and a thrust bearing gap is formed between an upper end surface of the housing and a lower end surface of the disc hub. In this case, the surfaces function as sliding portions temporarily in sliding contact with each other during operation of the bearing. A diameter of PAN-based carbon fibers blended as reinforcement fibers in the resin housing is 12 ?m or less, and the blending amount is within a range of 5 to 20 vol %, thereby making it possible to prevent occurrence of flaws and wear in the sliding portions.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: September 21, 2010
    Assignee: NTN Corporation
    Inventors: Katsuo Shibahara, Kenji Ito, Isao Komori, Ryouichi Nakajima, Tetsuya Kurimura
  • Publication number: 20100232733
    Abstract: In this type of fluid dynamic bearing device, a dynamic pressure generating part having high molding accuracy is formed at low cost. A rotating member 2 includes a shaft part 9, and a holding member 10 as a thrust member provided in one end of the shaft part 9. In a partial annular region of a lower end surface 10a1 of a disk part 10a making up the holding member 10, a region where a plurality of dynamic pressure grooves 10a2 and a plurality of sectioning parts 10a3 formed between the plurality of dynamic pressure grooves 10a2 to section the respective dynamic pressure grooves 10a2 are arrayed spirally is formed. The above-described dynamic-pressure-groove 10a2 arrayed region is opposed to an upper end surface 8a of a housing part 8, and forms a thrust bearing clearance of a thrust bearing part T between the dynamic-pressure-groove 10a2 and the upper end surface 8a during the rotation of the shaft part 9.
    Type: Application
    Filed: February 2, 2007
    Publication date: September 16, 2010
    Applicant: NTN CORPORATION
    Inventors: Kenji Ito, Isao Komori
  • Publication number: 20100225512
    Abstract: A D/A conversion circuit for performing D/A conversion at high speeds. The D/A conversion circuit includes a resistor string including a plurality of resistor elements connected between a low-potential power supply and a high-potential power supply. A plurality of first switch groups are connected to the connection nodes between the resistor elements for selectively outputting voltages at the connection nodes. The outputs of the switches of the first switch groups are connected in common to a corresponding one of the nodes. The plurality of nodes are connected to an output terminal of the D/A conversion circuit via a second switch group. Predetermined switches of the first switch groups are connected in parallel to third switches to apply voltages to the nodes.
    Type: Application
    Filed: May 21, 2010
    Publication date: September 9, 2010
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Yoshiaki SHIMIZU, Hisao SUZUKI, Kenji ITO, Masashi KIJIMA
  • Patent number: 7778539
    Abstract: An optical apparatus which achieves fast focusing operation and allows accurate focusing is disclosed. The optical apparatus includes a first focus detector which detects a focus state on a subject, a second focus detector which detects a focus state on the subject in a detection method different from a detection method of the first focus detector, and a controller which has a function of detecting whether or not the subject is a moving body and a function of performing focus control of an image-taking optical system in a first sequence in which at least one of the first and second focus detectors is used and a second sequence in which at least the other of the focus detectors is used. The controller preferentially uses one of the first and second sequences depending on the result of the detection with the moving body detecting function.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: August 17, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenji Ito
  • Patent number: 7760125
    Abstract: An A/D conversion circuit including a plurality of resistor elements connected in series between a low-potential power supply and a high-potential power supply. The A/D conversion circuit includes a plurality of comparators that compare a reference voltage divided by each of the resistor elements with an analog input voltage, the comparators having a sample-and-hold function for holding a sampled analog input voltage. The plurality of comparators also include a high-order bit comparator and a low-order bit comparator having different sampling sources. The high-order bit comparator may be configured to compare the analog input voltage and one of the reference voltages to obtain a determination result. The low-order bit comparator may old the analog voltage from the time that the low-order bit comparator retrieves the analog input voltage until the low-order bit comparator performs comparison.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: July 20, 2010
    Assignee: Fujitsu Microelectronics Limited
    Inventors: Yoshiaki Shimizu, Hisao Suzuki, Kenji Ito, Masashi Kijima