Patents by Inventor Masahiro Arai

Masahiro Arai 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: 20100015378
    Abstract: A transparent plastic container which is transparent, allows good design and can be used for an anticounterfeit system that determines authenticity by visual check with the use of polarization property. A transparent plastic sheet of a polystyrene-based resin having a total light transmission of 85% or higher and a haze of 7% or less is subjected to vacuum, pneumatic or vacuum/pneumatic forming at a sheet temperature ranging from a glass transition temperature plus 50 degrees C. to a glass transition temperature plus 130 degrees C., thereby obtaining a transparent plastic container having a planar portion with a strain amount of 150 nm or less.
    Type: Application
    Filed: July 11, 2007
    Publication date: January 21, 2010
    Applicant: NHK SPRING CO., LTD.
    Inventors: Itsuo Takeuchi, Tokio Sakauchi, Mutsumi Sasaki, Tomoyoshi Sakamoto, Masahiro Arai, Rie Maejima
  • Publication number: 20090316079
    Abstract: A fluorescent tube is prevented from being wrongly attached and broken when being attached, and luminance nonuniformity of backlight due to luminance difference generated in a tube axis direction of the fluorescent tube is reduced. A backlight device 2 is provided with a plurality of fluorescent tubes 21 having electrodes 211 at both ends; a bundling member 213 for bundling wirings 212 pulled out from the electrode 211 on one side of two or more of the fluorescent tubes 21; and a conducting means 31 for achieving conduction between the electrodes of the two fluorescent tubes among the fluorescent tubes 21 by being connected with the bundling member 213. The conducting means 31 permits a current to be carried between the electrodes of the two fluorescent tubes 21, which are bundled by the one bundling member 213, and the conducting means are arranged on inverter circuit substrate 28, respectively, not to be adjacent to each other.
    Type: Application
    Filed: June 28, 2007
    Publication date: December 24, 2009
    Inventors: Masahiro Arai, Kohei Nanbu, Masaki Shimizu
  • Patent number: 7617360
    Abstract: To efficiently manage performance resources while preventing a failure of a control processing from affecting another control processing in a disk array apparatus. The disk array apparatus has a disk array controller, which includes a CPU incorporating a plurality of processor cores that cannot be physically separated from each other, and each processor core serves as an unit processor. One unit processor manages the unit processors separately, allocates a self-contained control program to each unit processor so that the operation of the unit processor can be terminated appropriately or the unit processor can operate until the operation of the whole CPU is terminated, and manages the processing load or processing status of the allocated control program on a unit-processor basis.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: November 10, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Arai, Naoto Matsunami
  • Patent number: 7608859
    Abstract: A semiconductor light-emitting device with a transparent conductive film has: a light-emitting portion formed on a semiconductor substrate, the light-emitting portion having an n-type clad layer, an active layer and a p-type clad layer; an As-based contact layer formed on the light-emitting portion, the contact layer being doped with a p-type dopant of 1×1019/cm3 or more; a current spreading layer formed on the contact layer, the current spreading layer being formed of a transparent conductive film made of a metal oxide material; and a buffer layer formed between the contact layer and the p-type clad layer. The buffer layer has two or more buffer layer parts, and the adjacent buffer layer parts are different each other in material or composition.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: October 27, 2009
    Assignee: Hitachi Cable, Ltd.
    Inventors: Taichiroo Konno, Kazuyuki Iizuka, Masahiro Arai
  • Patent number: 7610506
    Abstract: A compact data processing system suitable for long-term use that enables the maintenance of failure resistance without having to mount many spare disks or replace disks; a data processing method; and a storage apparatus for this data processing system are provided. In the data processing system, which has a host system and a storage apparatus that provides first memory areas for storing data read/written by the host system, the storage apparatus has a reservation unit that dynamically reserves one of the first memory areas as a spare second memory area when a failure occurs in any one of the first memory areas and there is no spare second memory area to migrate the data stored in that faulty memory area to.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: October 27, 2009
    Assignee: Hitachi, Ltd.
    Inventor: Masahiro Arai
  • Publication number: 20090206354
    Abstract: A semiconductor light-emitting device includes a support structure, and a light-emitting structure. The support structure includes a support substrate, and a support substrate side bonding layer disposed on one surface of the support substrate. The light-emitting structure includes a light-emitting structure side bonding layer bonded to the support substrate side bonding layer, a reflection region disposed on the support substrate side bonding layer opposite the support substrate, and a semiconductor multilayer structure including a light-emitting layer disposed on the reflection region opposite the light-emitting structure side bonding layer for emitting a light with a predetermined wavelength, and a light-extraction surface disposed on the light-emitting layer opposite the reflection region for reflecting diffusely the light.
    Type: Application
    Filed: August 26, 2008
    Publication date: August 20, 2009
    Applicant: Hitachi Cable, Ltd.
    Inventors: Nobuaki Kitano, Masahiro Arai, Kazuyuki Iizuka
  • Publication number: 20090198888
    Abstract: Provided is a disk array system which is connected to a computer and which data is transmitted by the computer, including: a plurality of disk drives for storing user data transmitted by the computer; a cache memory for temporarily storing data sent/received among the computer and the plurality of disk drives; and a control unit for controlling input/output of the data to/from the cache memory, in which the control unit stores user data identification information that is capable of judging whether the user data is stored in a sector of the disk drive. The disk array system according to this invention allows the identification of user data of a disk drive.
    Type: Application
    Filed: April 13, 2009
    Publication date: August 6, 2009
    Inventors: Akihiro Mannen, Yoichi Mizuno, Masahiro Arai
  • Patent number: 7569866
    Abstract: A semiconductor light-emitting device having: a light-emitting portion formed on a semiconductor substrate, the light-emitting portion having an n-type clad layer, an active layer and a p-type clad layer; an As-based contact layer formed on the light-emitting portion, the contact layer being doped with a p-type dopant of 1×1019/cm3 or more; a current spreading layer formed on the contact layer, the current spreading layer being formed of a transparent conductive film of a metal oxide material; and a buffer layer formed between the contact layer and the p-type clad layer or formed being inserted inside of the p-type clad layer. The buffer layer is of an undoped group III/V semiconductor, and the group III/V semiconductor is of a group V element having P (phosphorus) as a main component thereof.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: August 4, 2009
    Assignee: Hitachi Cable, Ltd.
    Inventors: Taichiroo Konno, Kazuyuki Iizuka, Masahiro Arai
  • Patent number: 7535026
    Abstract: A semiconductor light-emitting device has a semiconductor substrate, an n-type cladding layer, an active layer, a p-type cladding layer, a p-type buffer layer, a p-type contact layer, and a current spreading layer. A part or all of the p-type buffer layer has a low Mg concentration buffer layer with a Mg concentration of 3.0×1017/cm3 or less and a film thickness of 50 nm or more.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: May 19, 2009
    Assignee: Hitachi Cable, Ltd.
    Inventors: Kazuyuki Iizuka, Taichiroo Konno, Masahiro Arai
  • Patent number: 7513229
    Abstract: At the time of obtaining a difference in intake air amount between right and left banks in a V-type engine, a target value of a lift-amount/operation-angle-varying mechanism provided for each of the banks is set to a target value at which flow velocity of intake air passing through an intake valve becomes almost sound velocity. In a state in which the flow velocity of intake air passing through the intake valve becomes almost sound velocity, a difference in the intake air amount in the right and left banks is detected and, to reduce the difference, a correction value for a target value of a valve lift is set for each of the banks.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: April 7, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Ryo Miyakoshi, Kenichi Machida, Takahiro Yoshino, Masahiro Arai, Hatsuo Nagaishi
  • Publication number: 20090083610
    Abstract: The present invention provides means for effectively reducing the amount of data by means of de-duplication in a disk array apparatus having a data guarantee code. A control means for the disk array apparatus that adds a data guarantee code to each logical data block and checks the data guarantee code when reading data has a de-duplication performing function and control means for: generating LA substitution information for a function checking the data guarantee code or read data location address substitution information when performing the de-duplication and storing data; performing the de-duplication using the above-mentioned information when reading data; and thereby avoiding false diagnosis of the data guarantee code check.
    Type: Application
    Filed: January 30, 2008
    Publication date: March 26, 2009
    Inventors: Masahiro Arai, Kentaro Shimada, Shuji Nakamura
  • Publication number: 20090072257
    Abstract: An upper electrode is formed on one surface of a semiconductor multilayer structure including a light emitting layer. An interface electrode is formed at a region of another surface of the semiconductor multilayer structure except a region right under the upper electrode. A center of the interface electrode coincides with a center of the upper electrode. At least a part of the interface electrode has a similar shape to a shape of an outer periphery of the upper electrode. A current blocking layer is formed at another region of another surface of the semiconductor multilayer structure except the region where the interface electrode is formed. A reflecting layer for reflecting a part of the light emitted from the light emitting layer is electrically connected to the interface electrode. A conductive supporting substrate is electrically connected to the semiconductor multilayer structure.
    Type: Application
    Filed: February 4, 2008
    Publication date: March 19, 2009
    Applicant: HITACHI CABLE, LTD.
    Inventors: Tsunehiro Unno, Masahiro Arai
  • Patent number: 7489999
    Abstract: In an engine provided with a valve lift amount variable mechanism and a center phase variable mechanism for an intake valve, a region between a region where a flow rate of an intake air passing through the intake valve reaches a sonic speed and a region where an intake air amount does not substantially change relative to a change in an opening area of the intake valve is made to be a learning region. Then, in order to resolve an error in intake air amount in the learning region, a correction value for correcting control process of the valve lift amount variable mechanism is learned. When the learning of the correction value is converged, the learning correction value is corrected with an occupied rate of the valve lift amount variable mechanism in the influence ratio between influences on the two mechanisms in relation to the error.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: February 10, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Ryo Miyakoshi, Kentaro Mikawa, Masahiro Arai, Yuko Nagaishi, legal representative, Takahiro Yoshino, Hatsuo Nagaishi
  • Publication number: 20090024792
    Abstract: To provide a storage apparatus in which a plurality of drives in a unit are separately treated and the unit can be easily exchanged for another unit even when RAID groups are freely composed. The storage apparatus includes a plurality of drive cases in each of which a plurality of units are detachably mounted, each of the units including a plurality of drives that are detachably, and a controller case in which a disk control section is provided, wherein the disk control section comprises a RAID group creation section for creating a RAID group using the plurality of disks and an exchange indicating section for giving a notice that a unit is ready to exchange after rebuilding or copying of data in disks included in the unit at the time of exchange of the unit.
    Type: Application
    Filed: September 16, 2008
    Publication date: January 22, 2009
    Inventors: Masahiro ARAI, Ikuya Yagisawa, Yoichi Mizuno, Naoto Matsunami
  • Patent number: 7449722
    Abstract: A semiconductor light emitting element has a first conductive-type cladding layer, an undoped active layer, a second conductive-type cladding layer, and a second conductive-type current spreading layer that are formed on a first conductive-type semiconductor substrate. The second conductive-type cladding layer has a first dopant suppressing layer formed at a portion in the second conductive-type cladding layer, the portion being not in contact with the active layer. The first dopant suppressing layer has a dopant concentration lower than a region in the vicinity of the first dopant suppressing layer.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: November 11, 2008
    Assignee: Hitachi Cable, Ltd.
    Inventors: Taichiroo Konno, Kazuyuki Iizuka, Masahiro Arai, Takashi Furuya
  • Patent number: 7441143
    Abstract: To provide a storage apparatus in which a plurality of drives in a unit are separately treated and the unit can be easily exchanged for another unit even when RAID groups are freely composed. The storage apparatus includes a plurality of drive cases in each of which a plurality of units are detachably mounted, each of the units including a plurality of drives that are detachably, and a controller case in which a disk control section is provided, wherein the disk control section comprises a RAID group creation section for creating a RAID group using the plurality of disks and an exchange indicating section for giving a notice that a unit is ready to exchange after rebuilding or copying of data in disks included in the unit at the time of exchange of the unit.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: October 21, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Arai, Ikuya Yagisawa, Yoichi Mizuno, Naoto Matsunami
  • Publication number: 20080167789
    Abstract: In a variable valve unit provided with a variable valve mechanism that varies opening characteristics of an engine valve by rotary motion of a control shaft, an actuator that generates a rotary motion of the control shaft, a stopper restricting the rotary motion of the control shaft, and an angle sensor capable of outputting signals corresponding to angle positions of the control shaft, when the signal of the angle sensor at an angle position where the rotation of the control shaft is restricted by the stopper are learned, the actuator is controlled such that the control shaft is pressed against the stopper, after which drive torque of the actuator is reduced and with the drive torque reduced, signals of the then-angle sensor are stored.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 10, 2008
    Inventors: Naoki OKAMOTO, Masahiro ARAI, Hatsuo NAGAISHI, Takahiro YOSHINO, Yuko NAGAISHI
  • Patent number: D573204
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: July 15, 2008
    Assignee: Futaba Corporation
    Inventors: Masahiro Arai, Takahiro Isono, Kota Toyotomi
  • Patent number: D594514
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: June 16, 2009
    Assignee: Futaba Corporation
    Inventors: Yoshihiro Noguchi, Masahiro Arai, Hideo Kitazawa
  • Patent number: D605237
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 1, 2009
    Assignee: Futaba Corporation
    Inventors: Chihiro Uemura, Masahiro Arai, Yasuyuki Suzuki, Makoto Migita, Yoshitaka Mukai, Shota Sawahata