Patents by Inventor Takehiko Saito

Takehiko Saito 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: 20110120979
    Abstract: A pair of upper and lower electrode wheels 1, 2 are disposed so that their axes 17, 18 are tilted in a horizontal plane in respective directions opposite to each other with respect to a straight line Y perpendicular to a welding line X defined on overlapping portions (L) of two metal plates 5, 6, and mash seam welding is performed while positively driving electric motors 61, 62. This can reduce the increased amount of thickness and step gradient of a joint portion to reduce a stress concentration factor and ensure joint strength. The metal plates are joined to each other such that a nugget N is not deviated from a joint interface. Therefore, it is possible to prevent respective ends of the metal plates at the overlapping portions L from biting into and scratching the corresponding electrode wheels 1, 2 and to prevent spattering during the welding.
    Type: Application
    Filed: July 11, 2008
    Publication date: May 26, 2011
    Applicant: MITSUBISHI-HITACHI METALS MACHINERY, INC.
    Inventors: Shinichi Kaga, Noriaki Tominaga, Takehiko Saito, Mitsuru Onose, Yasutsugu Yoshimura, Hirotoshi Tagata, Yujiro Watanabe, Satoru Zenitani, Ikuo Wakamoto
  • Publication number: 20110102554
    Abstract: There is provided a demultiplexer that receives video data for one of a three-dimensional display and a two-dimensional display. There is also provided an HDMI transmission portion that transmits the video data and display information that pertains to one of the three-dimensional display and the two-dimensional display of the video data to a television receiver through TMDS channels #0, #1, and #2 of an HDMI cable. There is also provided a transmission/receiving portion that transmits the display information to the television receiver through a CEC line of the HDMI cable.
    Type: Application
    Filed: August 11, 2010
    Publication date: May 5, 2011
    Applicant: Sony Corporation
    Inventors: Takehiko Saito, Ichiro Hamada
  • Publication number: 20100238806
    Abstract: [Object] To provide an electronic apparatus capable of easily detecting a terminal that forms a loop connection state with a simplified configuration. [Solving Means] A control unit counts the number of broadcast packet supplied from a switching hub to a communication unit within a predetermined time period and determines whether the number of packets exceeds a threshold value (ST2, ST3). If the number of packets exceeds the threshold value, the control unit determines that an abnormal connection state occurs, that is, a loop is detected and starts a process in which the control unit identifies a network terminal that forms the loop connection state (ST3, ST5). The control unit counts the number of broadcast packets that reach each of the network terminals, that is, broadcast packets input to each port of the switching hub.
    Type: Application
    Filed: December 10, 2008
    Publication date: September 23, 2010
    Applicant: Sony Corporation
    Inventors: Takehiko Saito, Masaki Kitano, Hiroyuki Shigei, Masaaki Takesue
  • Publication number: 20100064749
    Abstract: Cold rolled material manufacturing equipment comprises: an unwinding device (21a) for unwinding a hot rolled coil after acid pickling; joining means (23), disposed on the exit side of the unwinding device, for joining the tail end of a preceding coil (25b) to the leading end of a succeeding coil (22a) unwound from the unwinding device; a rolling mill (10a, 10b) for continuously rolling the coils, with the leading end and the tail end of the coils being joined, in one direction; a strip storage device (50), disposed between the joining means and the rolling mill, for storing a strip S in order to perform continuous rolling by the rolling mill during joining of the preceding coil and the succeeding coil by the joining means; a strip cutting device (28) for cutting the strip to a desired length; a winding device (24) for winding the rolled coil; transport means (30) for withdrawing the coil from the winding device, and transporting the coil to the unwinding device (21a, 21b) so that the coil is rolled a pluralit
    Type: Application
    Filed: November 20, 2006
    Publication date: March 18, 2010
    Applicant: Mitsubishi-Hitachi Metals Machinery, Inc.
    Inventors: Shinichi Kaga, Mitsuru Onose, Noriaki Tominaga, Takehiko Saito, Yasutsugu Yoshimura
  • Publication number: 20060259011
    Abstract: A catheter includes an inner layer, an outer layer, a reinforcement layer located between the inner layer and the outer layer, and a marker composed of a contrast material for confirming the position of the distal end portion of the catheter from outside the living body. The reinforcement layer is composed of a spiral first filamentous member, with a gap provided between those portions of the first filamentous member which are adjacent to each other along the longitudinal direction of the catheter. The marker is formed by spirally winding a second filamentous member having a filament diameter smaller than the gap, and has a portion in close contact with the inner layer in the gap.
    Type: Application
    Filed: May 10, 2006
    Publication date: November 16, 2006
    Applicant: Terumo Kabushiki Kaisha
    Inventors: Masaaki Kubo, Takehiko Saito, Takenari Ito
  • Patent number: 6925138
    Abstract: The present invention is to provide a reactor core that allows a nuclear plant to continuously operate for a long term period, for example 15 years or longer, without requiring any fuel exchange, reduces the duration and number of maintenance steps involved in regular plant inspections, markedly improves plant availability and economic efficiency, and is effective in terms of nuclear nonproliferation. A plurality of fuel assemblies 103, themselves obtained by arranging fuel rods 100 and water rods 107 in square lattices, are arranged in a square lattice at a certain pitch. The blades 102a of a cross-shaped (cruciform) control rod 102 in a cross section are inserted into four adjacent spaces formed by four fuel assemblies 100 facing each other. A value of 0.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: August 2, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mikihide Nakamaru, Hideaki Heki, Takehiko Saito, Kouji Hiraiwa, Tadashi Narabayashi, Satoru Oomizu, Tsuyoshi Shimoda, Kenji Arai, Shinichi Morooka, Seijiro Suzuki
  • Patent number: 6831732
    Abstract: A printer comprises for forming an image on a surface of a recording medium includes a preprocessing means for preprocessing the surface of the recording media to form an image on the surface of the recording media; post-processing device for post-processing the surface of the recording medium preprocessed by the preprocessing device; a recording medium feed path formed between the preprocessing means and the post-processing means; a first feed device arranged on an upstream side of the recording medium feed path; and a second feed device arranged on a downstream side of the recording medium feed path. The first feed device and the second feed device are made different in driving control from each other. For printing a plurality of recording medium successively, no large-scale arrangements are provided for printing processes to meet a required printing accuracy and to shorten a processing time.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: December 14, 2004
    Assignee: Nisca Corporation
    Inventors: Itaru Fukushima, Satoshi Yamanushi, Yuuki Horigome, Takehiko Saito
  • Patent number: 6813109
    Abstract: A rotary magnetic head apparatus which can be formed into a smaller size in which signals of a plurality of recording tracks which are recorded on a tape-like information recording medium are reproduced by using a plurality of reproduction heads without depending on the arrangement of the recording tracks in the information recording medium. The rotary magnetic head apparatus includes a rotary drum, a fixed drum, a reproduction signal selection device, a rotor reproduction signal wiring section, and a stator reproduction signal wiring section.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: November 2, 2004
    Assignee: Sony Corporation
    Inventors: Tadashi Ozue, Toshio Shirai, Tomohiro Ikegami, Takehiko Saito
  • Patent number: 6810099
    Abstract: The present invention provides a boiling water reactor nuclear power plant in which a reactor core support plate, upper grid plate, and a reactor core consisting of fuel assemblies supported by these plates are provided in the inner base portion of a nuclear reactor pressure vessel. Control rod guide tubes and a reactor core shroud are positioned over the upper grid plate, and a control rod drive mechanism is provided further above same, whereby the control rods can be inserted from above the reactor core, and natural circulation of cooling water inside the reactor can be achieved by means of a chimney effect of the control rod guide tubes. According to the above structure, there can be provided a compact and economical nuclear power plant.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: October 26, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mikihide Nakamaru, Hideaki Heki, Takehiko Saito, Kouji Hiraiwa, Tadashi Narabayashi, Satoru Oomizu, Tsuyoshi Shimoda, Kenji Arai, Shinichi Morooka, Seijiro Suzuki
  • Patent number: 6708547
    Abstract: There are disclosed a rolling mill capable of keeping a uniform plate of thickness distribution and manufacturing a good-quality plate, and a rolling method. The rolling mill comprises working rolls movable in roll axis directions, profile-measuring means for measuring the profile of each of the working rolls, profile-estimating means for estimating the profile thereof, and a grinder for grinding each of the working rolls. The rolling mill also comprises instructing means for sending a command of grinding to the grinder at a time when the measured profile value or the estimated profile value regarding each of the working rolls reaches a given value.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: March 23, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Kenjiro Narita, Mitsuo Nihei, Takehiko Saito, Toshiyasu Shinmura, Shinichi Kaga, Takashi Kamoshita
  • Patent number: 6603363
    Abstract: There are provided the delay coarse adjustment circuit 3, the delay fine adjustment circuit 4, and the inverter circuit 5. The delay coarse adjustment circuit 3 stepwise varies a delay amount based on the delay coarse adjustment signal S11 and supplies the input oscillation signal S12 with a coarse delay. The delay fine adjustment circuit 4 stepwise varies a delay amount based on the delay fine adjustment signal S2 and supplies the input oscillation signal S13 with a fine delay which is smaller than a delay amount supplied by the delay coarse adjustment circuit 3. The inverter circuit 5 inputs the oscillation signal S14 from the delay coarse adjustment circuit 3 or the delay fine adjustment circuit 4. The delay coarse adjustment circuit 3 coarsely adjusts delays. The delay fine adjustment circuit 4 fine adjusts delays. The coarse and fine adjustments provide a precision delay to generate the oscillation output signal S15.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: August 5, 2003
    Assignee: Sony Corporation
    Inventors: Nobusuke Yamaoka, Ichiro Okamoto, Takehiko Saito, Yasutaka Kotani, Kenji Nikata
  • Publication number: 20020100307
    Abstract: There are disclosed a rolling mill capable of keeping a uniform plate of thickness distribution and manufacturing a good-quality plate, and a rolling method. The rolling mill comprises working rolls movable in roll axis directions, profile-measuring means for measuring the profile of each of the working rolls, profile-estimating means for estimating the profile there of, and a grinder for grinding each of the working rolls. The rolling mill also comprises instructing means for sending a command of grinding to the grinder at a time when the measured profile value or the estimated profile value regarding each of the working rolls reaches a given value.
    Type: Application
    Filed: March 26, 2002
    Publication date: August 1, 2002
    Applicant: HITACHI, LTD.
    Inventors: Kenjiro Narita, Mitsuo Nihei, Takehiko Saito, Toshiyasu Shinmura, Shinichi Kaga, Takashi Kamoshita
  • Publication number: 20020101951
    Abstract: The present invention provides a boiling water-type nuclear power plant comprising: a passive safety system having depressurization valves and a gravity driven core cooling system as an emergency core cooling system; a passive containment vessel cooling system in which reactor steam released in the containment vessel is cooled by a heat exchanger in a cooling water pool installed in the upper portion of the containment vessel; and a containment vessel flooding system which injects cooling water into a dry well of the containment vessel on an accident; wherein a containment vessel spray cooling system for injecting cooling water into the containment vessel via a pump is further added as a safety system.
    Type: Application
    Filed: October 17, 2001
    Publication date: August 1, 2002
    Inventors: Mikihide Nakamaru, Hideaki Heki, Takehiko Saito, Kouji Hiraiwa, Tadashi Narabayashi, Satoru Oomizu, Tsuyoshi Shimoda, Kenji Arai, Shinichi Morooka, Seijiro Suzuki
  • Publication number: 20020085660
    Abstract: The present invention provides a boiling water reactor nuclear power plant in which a reactor core support plate, upper grid plate, and a reactor core consisting of fuel assemblies supported by these plates are provided in the inner base portion of a nuclear reactor pressure vessel. Control rod guide tubes and a reactor core shroud are positioned over the upper grid plate, and a control rod drive mechanism is provided further above same, whereby the control rods can be inserted from above the reactor core, and natural circulation of cooling water inside the reactor can be achieved by means of a chimney effect of the control rod guide tubes. According to the above structure, there can be provided a compact and economical nuclear power plant.
    Type: Application
    Filed: October 17, 2001
    Publication date: July 4, 2002
    Inventors: Mikihide Nakamaru, Hideaki Heki, Takehiko Saito, Kouji Hiraiwa, Tadashi Narabayashi, Satoru Oomizu, Tsuyoshi Shimoda, Kenji Arai, Shinichi Morooka, Seijiro Suzuki
  • Publication number: 20020080908
    Abstract: The present invention is to provide a reactor core that allows a nuclear plant to continuously operate for a long term period, for example 15 years or longer, without requiring any fuel exchange, reduces the duration and number of maintenance steps involved in regular plant inspections, markedly improves plant availability and economic efficiency, and is effective in terms of nuclear nonproliferation.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 27, 2002
    Inventors: Mikihide Nakamaru, Hideaki Heki, Takehiko Saito, Kouji Hiraiwa, Tadashi Narabayashi, Satoru Oomizu, Tsuyoshi Shimoda, Kenji Arai, Shinichi Morooka, Seijiro Suzuki
  • Patent number: 6408666
    Abstract: There are disclosed a rolling mill capable of keeping a uniform plate thickness distribution and manufacturing a good-quality plate, and a rolling method. The rolling mill comprises working rolls movable in roll axis directions, profile-measuring means for measuring the profile of each of the working rolls, profile-estimating means for estimating the profile thereof, and a grinder for grinding each of the working rolls. The rolling mill also comprises instructing means for sending a command of grinding to the grinder at a time when the measured profile value or the estimated profile value regarding each of the working rolls reaches a given value.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: June 25, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Kenjiro Narita, Mitsuo Nihei, Takehiko Saito, Toshiyasu Shinmura, Shinichi Kaga, Takashi Kamoshita
  • Publication number: 20020039177
    Abstract: A printer, comprises for forming an image on a surface of a recording media: preprocessing means for preprocessing the surface of the recording media to form an image on the surface of the recording media; post-processing means for post-processing the surface of the recording media preprocessed by the preprocessing means to form the image on the surface of the recording media; a recording media feed path formed between the preprocessing means and the post-processing means; first feed means arranged on an upstream side of the recording media feed path; and, second feed means arranged on a downstream side of the recording media feed path; wherein the first feed means and the second feed means are made different in driving control from each other. For printing a plurality of recording media successively, no large-scale arrangements are provided for printing processes to meet a required printing accuracy and to shorten a processing time.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 4, 2002
    Inventors: Itaru Fukushima, Satoshi Yamanushi, Yuuki Horigome, Takehiko Saito
  • Patent number: 6304397
    Abstract: A helical scan magnetic recording/reproducing apparatus incorporating an MR head to serve as a reproducing magnetic head is arranged to convert data which is recorded on a magnetic tape into data in the form of DC-free code trains. The magnetic recording/reproducing apparatus is provided with a high-pass filter for attenuating low-frequency components of a reproduced signal detected by the MR head. Moreover, a demodulating circuit is provided which demodulates data in a state before data is converted into the DC-free code trains from the reproduced signal, in which the low-frequency components have been attenuated by said high-pass filter. As a result, noise (thermal asperities) in a low-frequency region caused when the magnetic tape and the MR head are brought into contact with each other is removed so that a reproduced output free from excessive noise is obtained. The high-pass filter is, for example, a rotary transformer mounted on rotational drum.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: October 16, 2001
    Assignee: Sony Corporation
    Inventors: Tadashi Ozue, Toshio Shirai, Takehiko Saito, Yoshiteru Kamatani, Tomohiro Ikegami
  • Patent number: 6297631
    Abstract: A magnetic signal reproducing apparatus which can lessen fluctuation of reproduced outputs in reproducing magnetic signals recorded in a magnetic tape by a magneto-resistance effect type magnetic head even if a magnetic tape sliding face of the magneto-resistance effect type magnetic head is abraded. A current value of a sense current when a voltage fluctuation level of the sense current caused when a magnetic field in the normal direction is applied to a magneto-resistance effect element of the magneto-resistance effect type magnetic head is equal with a voltage fluctuation level of the sense current caused when a magnetic field in the opposite direction is applied thereto is set to a predetermined value I0. Then, the current value of the sense current supplied to the magneto-resistance effect element of the magneto-resistance effect type magnetic head is set to be greater than I0 in reproducing the magnetic signals recorded in the magnetic tape.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: October 2, 2001
    Assignee: Sony Corporation
    Inventors: Tadashi Ozue, Toshio Shirai, Yoshiteru Kamatani, Tomohiro Ikegami, Takehiko Saito
  • Publication number: 20010009482
    Abstract: A rotary magnetic head apparatus which can be formed into a smaller size is provided in a case in which signals of a plurality of recording tracks which are recorded on a tape-like information recording medium are reproduced by using a plurality of reproduction heads without depending on the arrangement of the recording tracks in the information recording medium.
    Type: Application
    Filed: March 14, 2001
    Publication date: July 26, 2001
    Applicant: SONY CORPORATION
    Inventors: Tadashi Ozue, Toshio Shirai, Tomohiro Ikegami, Takehiko Saito