Patents by Inventor Wataru Okada
Wataru Okada 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).
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Publication number: 20190267588Abstract: A vehicular power source device includes: a case incorporating a battery; a service plug coupled to the battery incorporated in the case; and a protection cover of the service plug. The protection cover includes: a covering portion of the service plug; a fixing board fixed to the case via a fastener; and an opening board disposed to be adjacent to the fixing board and providing a gap to the case. In addition, the fixing board includes: a fixing portion fixed onto the case via the fastener; a linking portion linking the fixing portion to the covering portion; and a breaking portion. The breaking portion is provided in the fixing portion or in a boundary portion between the fixing portion and the linking portion, and a breaking strength of the breaking portion is lower than that of the linking portion.Type: ApplicationFiled: May 9, 2017Publication date: August 29, 2019Applicant: SANYO Electric Co., Ltd.Inventors: Wataru Okada, Kosho Abe, Yusuke Fujii, Yoshiaki Ueta
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Patent number: 10381834Abstract: The disclosure reduces the size and cost of a power conditioner. A power conditioner including a DC/DC converter connected to a power supply device and an inverter connected to the DC/DC converter includes: a plus side wiring connecting the DC/DC converter and the inverter; a minus side wiring connecting the DC/DC converter and the inverter; a capacitor having one end connected to the plus side wiring and an other end connected to the minus side wiring; and a fuse provided on the minus side wiring, wherein the DC/DC converter has at least one switching element; the other end of the capacitor is connected to a first connection point provided on the minus side wiring on the DC/DC converter side with respect to the fuse; and the switching element is connected to a second connection point provided on the minus side wiring on the inverter side with respect to the fuse.Type: GrantFiled: December 13, 2018Date of Patent: August 13, 2019Assignee: OMRON CorporationInventors: Kenji Kobayashi, Kazumi Tsuchimichi, Wataru Okada, Mamoru Yoshida, Gun Eto, Koji Fujita, Takayoshi Tawaragi
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Patent number: 10296468Abstract: An encryption key used with a storing apparatus and an encryption key used with a non-volatile cache memory are identical to each other. A cache control portion unit effects control in such a way that an encryption key EK used to encrypt first data stored in the storing apparatuses, and an encryption key EK used to encrypt second data which are data corresponding to the first data and are stored in the non-volatile cache memory, are identical to each other. If the cache control portion receives a write request and first data WD, the cache control portion identifies from the storing apparatuses a storing apparatus that is to be the storage destination of the first data, identifies an encryption key allocated to the identified storing apparatus, encrypts the second data corresponding to the first data using the identified encryption key, and stores the data in the non-volatile cache memory.Type: GrantFiled: February 5, 2014Date of Patent: May 21, 2019Assignee: Hitachi, Ltd.Inventors: Mioko Moriguchi, Wataru Okada, Nobuhiro Maki
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Publication number: 20190149423Abstract: The storage apparatus includes a control unit that manages a storage area allocated to the host computer. The control unit assigns an identifier to the host computer that accesses the storage area, and assigns the identifier to the first computer's first interface that accesses the storage area, assigns a second port identifier of a second interface of a storage device that communicates with a host computer to a first port identifier of the first interface by accepting a port identifier and sets a logical path, storing the port identifier and the second port identifier in association with each other in the host computer connection information, assigning the identifier of the storage area to the identifier of the host computer, associating the identifier of the storage computer with the identifier of the host computer, and storing the storage area allocation information.Type: ApplicationFiled: September 4, 2018Publication date: May 16, 2019Applicant: HITACHI, LTD.Inventors: Keisuke OKAMURA, Wataru OKADA
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Publication number: 20190118408Abstract: A fiber-containing particulate resin structure (S) is a particulate resin structure including a resin (1) and fibers (2), in which the fibers (2) are dispersed in the resin (1) in an opened state, and an average density of the resin structure is in a range of 0.20 to 1.00 (g/cm3).Type: ApplicationFiled: May 1, 2017Publication date: April 25, 2019Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Hideaki Inokuchi, Koji Koizumi, Shogo Nakano, Wataru Okada, Shuhei Yamamoto
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Publication number: 20190087181Abstract: A storage system includes a management processor and main processors. Each of the main processors is configured to alternately switch between a period in which main function processing, including I/O processing in response to an I/O request from a host, is executed and a period in which a management instruction is executed. The management processor is configured to: manage information associating each of uncompleted management instructions, which are already transmitted to the main processors, with a transmission destination main processor to which the each of the uncompleted management instructions is transmitted; select, based on the uncompleted management instructions of the main processors, a transmission destination main processor to which a next management instruction is to be transmitted, from among the main processors; and transmit the next management instruction to the selected transmission destination main processor.Type: ApplicationFiled: February 21, 2018Publication date: March 21, 2019Inventors: Wataru OKADA, Keisuke OKAMURA
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Patent number: 10211756Abstract: An inverter circuit provided in a power conversion device includes a full-bridge inverter, and a short circuit part. The short circuit part includes switching elements and clamp elements connected to the switching elements. The clamp elements suppress application of an excessive voltage such as a surge voltage to the switching elements.Type: GrantFiled: October 18, 2017Date of Patent: February 19, 2019Assignee: OMRON CorporationInventors: Takeo Nishikawa, Wataru Okada, Takayoshi Tawaragi, Satoshi Iwai
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Patent number: 10182110Abstract: If resources allocated to a host computer exist in different physical storage nodes within a virtual storage system after performing migration to a storage system, mapping of resources among the physical storage nodes becomes necessary, and if the amount of communication between physical storage nodes that occurs during access to resources exceeds a bandwidth of the connection path, the host I/O performance may be deteriorated compared to the performance before migration. Therefore, when migration is performed from a first physical storage node to a virtual storage system composed of a plurality of second physical storage nodes, a management computer allocates resources of the second physical storage nodes within a range of bandwidth of the transfer path between the second physical storage nodes based on configuration information of the plurality of second physical storage nodes, performance information, and load information of the volume provided by the first physical storage node.Type: GrantFiled: December 13, 2013Date of Patent: January 15, 2019Assignee: Hitachi, Ltd.Inventors: Wataru Okada, Norio Shimozono
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Patent number: 10074883Abstract: A highly reliable assembled battery has first passages formed between a first rectangular cell and a first surface of the body part of a separator, and has second passages formed between a second rectangular cell and the second surface of the body part of the separator in an alternating manner from above to below. Openings are provided in a side wall part of the separator. The first passages and the second passages are exposed by the openings.Type: GrantFiled: April 24, 2015Date of Patent: September 11, 2018Assignee: SANYO ELECTRIC CO., LTD.Inventor: Wataru Okada
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Publication number: 20180041138Abstract: An inverter circuit provided in a power conversion device includes a full-bridge inverter, and a short circuit part. The short circuit part includes switching elements and clamp elements connected to the switching elements. The clamp elements suppress application of an excessive voltage such as a surge voltage to the switching elements.Type: ApplicationFiled: October 18, 2017Publication date: February 8, 2018Applicant: OMRON CorporationInventors: Takeo NISHIKAWA, Wataru OKADA, Takayoshi TAWARAGI, Satoshi IWAI
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Publication number: 20180032254Abstract: A configuration aimed at reducing loads on storage apparatuses at a restoration site is provided in an environment where there are differences in the performance and capacity of the storage apparatuses between a primary site and the restoration site. Second volumes which form a remote copy with first volumes provided to a host at a primary site are located in a storage apparatus at the restoration site, which can satisfy the performance requirement upon failure of the first volumes, on the basis of performance information and available capacity information. A volume group is configured for each of the second volumes located at one storage apparatus at the restoration site and the first volumes; and an extended volume group including a plurality of second volumes, in which data is replicated and recorded in a write order to write the data to the first volumes, and their first volumes is set.Type: ApplicationFiled: June 1, 2015Publication date: February 1, 2018Inventors: Wataru OKADA, Yoshinori OHIRA, Nobuhiro MAKI
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Publication number: 20180019454Abstract: The power supply device includes a plurality of battery cells each having a rectangular outer shape; separators each interposed between the battery cells and insulating mutually adjacent battery cells; and fastening members for fastening a battery cell stack including the alternately stacked battery cells and the separators. The separator includes a sandwiching plate portion disposed between the facing principal surfaces of the mutually adjacent battery cells, and a plate-like bottom-surface cover portion provided to both surfaces of the sandwiching plate portion, at a lower end of the sandwiching plate portion, and protruding in a stacked direction of the battery cells to cover bottom surfaces of the battery cells. The bottom-surface cover portions of the separators stacked on both surfaces of the battery cells are stacked on each other at the bottom surfaces of the battery cells.Type: ApplicationFiled: December 9, 2015Publication date: January 18, 2018Inventors: WATARU OKADA, YOSHIAKI UETA, SHUICHI SUGAWARA, YOSHIHIRO SHIOTSU
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Patent number: 9866028Abstract: A power control apparatus includes: a first conversion apparatus that applies DC/DC conversion to direct current power from a power generator for generating power using natural energy, and outputs the resultant power; a second conversion apparatus that applies DC/DC conversion to the power output from the first conversion apparatus and charges a power storage unit with the resultant power, and also applies DC/DC conversion to power from the power storage unit and discharges the resultant power; a third conversion apparatus that supplies alternating current power to a power system and an alternating current load by applying DC/AC conversion to the power output from the first conversion apparatus and/or the power discharged by the second conversion apparatus; and a controller that causes the second conversion apparatus to perform the discharge so that the power output from the third conversion apparatus is higher than power consumed by the alternating current load.Type: GrantFiled: June 18, 2015Date of Patent: January 9, 2018Assignee: OMRON CorporationInventors: Takeo Nishikawa, Takuya Nakai, Makoto Ohashi, Junichiro Yamada, Wataru Okada
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Publication number: 20180004447Abstract: The storage system is capable of creating one or more virtual storage subsystems to which virtual resources having logically divided a processing capacity of the physical resources are allocated, and upon creating a virtual volume for receiving I/O requests from the host within the virtual storage subsystem, the virtual storage subsystem allocates the virtual resource to the virtual volume, and when an I/O request to the virtual volume is received from the host, performs processing related to the I/O request using the virtual resource having been allocated. According further to the storage system, after allocating the virtual resource to the virtual volume, the storage system raises a utilization rate of the virtual resource allocated to the virtual volume in a stepwise manner.Type: ApplicationFiled: January 29, 2015Publication date: January 4, 2018Inventors: Yoshinori OOHIRA, Nobuhiro MAKI, Wataru OKADA, Tadashi TAKEUCHI, Sachie TAJIMA
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Patent number: 9853452Abstract: A power control apparatus includes: a direct current bus serving as a path for supplying direct current power; a first conversion apparatus that applies DC/DC conversion to direct current power from a power generator for generating power using natural energy, and outputs the resultant direct current power to the direct current bus; a second conversion apparatus that applies DC/DC conversion to the direct current power and charges a power storage unit with the resultant direct current power, and also applies DC/DC conversion to direct current power from the power storage unit and discharges the resultant direct current power to the direct current bus; a third conversion apparatus that applies DC/AC conversion to the direct current power from the direct current bus and supplies alternating current power to a power system and an alternating current load; and a controller that controls driving of the first to third conversion apparatuses.Type: GrantFiled: June 18, 2015Date of Patent: December 26, 2017Assignee: OMRON CorporationInventors: Takuya Nakai, Takeo Nishikawa, Makoto Ohashi, Junichiro Yamada, Wataru Okada
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Publication number: 20170365838Abstract: A plurality of battery cells are connected by a busbar. Electrode terminals of the battery cells each include a protruding portion and a welding surface around the protruding portion. The busbar includes a welding plate portion being in surface-contact with the welding surface and having a cut-away portion for guiding the protruding portion, and an exposure gap that exposes the welding surface between the inner side of the cut-away portion and the protruding portion. The busbar is welded to the welding surface in a predetermined welding width (H) by both of a fillet weld part and a penetration welding portion such that the inner edge of the cut-away portion as the fillet weld part is welded to the welding surface, and the boundary between the busbar and the welding surface is welded by the penetration welding portion.Type: ApplicationFiled: November 6, 2015Publication date: December 21, 2017Inventors: WATARU OKADA, YOSHIHIRO SHIOTSU, TOMOMI TANAKA, SEIJI KUMAZAWA
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Publication number: 20170365827Abstract: A battery system includes a plurality of battery cells; a busbar that is laser-welded to electrode terminals of the adjacent battery cells and electrically connects the battery cells; and a plastic insulating wall disposed between the adjacent electrode terminals. The surface color of the insulating wall is a heat-ray reflecting color having far-infrared reflectance of 50% or more.Type: ApplicationFiled: December 9, 2015Publication date: December 21, 2017Inventors: WATARU OKADA, YOSHIHIRO SHIOTSU, TOMOMI TANAKA, SEIJI KUMAZAWA
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Publication number: 20170365897Abstract: In order to provide a power supply device having a high rigidity and a light weight, power supply device includes: one or more cell stacked bodies each formed by stacking secondary battery cells; a circuit board including a control circuit electrically connected to the cell stacked bodies; resin-made battery case for storing the cell stacked bodies and circuit board; metal-made lower frame for covering the bottom surface of battery case; and metal-made upper frame for covering the upper surface of battery case. Battery case has a waterproof structure. Battery case is grasped by connecting upper frame to lower frame.Type: ApplicationFiled: November 6, 2015Publication date: December 21, 2017Inventors: WATARU OKADA, YOSHIAKI UETA, SHUICHI SUGAWARA, YOSHIHIRO SHIOTSU
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Publication number: 20170235677Abstract: A computer system that is composed of a host computer, a storage device and a management computer. The storage device comprises a port for connecting with the host computer, a cache memory, a processor, and a plurality of logic volumes which are logical memory regions. For each logic volume, the port, the cache memory and the processor are divided into logic partitions, as resources that are used for reading and writing in the logic volume. The host computer reads and writes with respect to the logic volumes. If a failure occurs in the storage device, the management computer issues a command to the storage device to allocate the resources of a logic partition for which reading/writing performance is not ensured to a logic partition for which reading/writing performance is ensured.Type: ApplicationFiled: November 12, 2014Publication date: August 17, 2017Applicant: Hitach, Ltd.Inventors: Hidenori SAKANIWA, Wataru OKADA, Yoshinori OHIRA, Etsutarou AKAGAWA, Nobuhiro MAKI, Mioko MORIGUCHI
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Publication number: 20170139842Abstract: An encryption key used with a storing apparatus and an encryption key used with a non-volatile cache memory are identical to each other. A cache control portion unit effects control in such a way that an encryption key EK used to encrypt first data stored in the storing apparatuses, and an encryption key EK used to encrypt second data which are data corresponding to the first data and are stored in the non-volatile cache memory, are identical to each other. If the cache control portion receives a write request and first data WD, the cache control portion identifies from the storing apparatuses a storing apparatus that is to be the storage destination of the first data, identifies an encryption key allocated to the identified storing apparatus, encrypts the second data corresponding to the first data using the identified encryption key, and stores the data in the non-volatile cache memory.Type: ApplicationFiled: February 5, 2014Publication date: May 18, 2017Inventors: Mioko MORIGUCHI, Wataru OKADA, Nobuhiro MAKI