Patents by Inventor Akira Yamamoto

Akira Yamamoto 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: 10733092
    Abstract: A storage system monitors the first access frequency of occurrence which is the access frequency of occurrence from a host device during a first period, and the second access frequency of occurrence which is the access frequency of occurrence from a host device during a second period shorter than the first period. Along with performing data relocation among the tiers (levels) in the first period cycle based on the first access frequency of occurrence, the storage system performs a decision whether or not to perform a second relocation based on the first access frequency of occurrence and the second access frequency of occurrence, synchronously with access from a host device. Here the threshold value utilized in a decision on whether or not to perform the first relocation is different from the threshold value utilized in a decision on whether or not to perform the second relocation.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: August 4, 2020
    Assignee: HITACHI, LTD.
    Inventors: Hiroaki Akutsu, Akira Yamamoto, Shigeo Homma, Masanobu Yamamoto, Yoshinori Ohira
  • Patent number: 10729392
    Abstract: An X-ray detector according to one embodiment includes X-ray detector modules, and a frame. Each X-ray detector module has a detection surface on which detection elements configured to detect X-rays are arrayed, and a supporter configured to support the detection elements. The frame fixes positions of the X-ray detector modules in such a manner that the detection surfaces of the X-ray detector modules are aligned along a first direction. The frame is provided with a pin protruding toward the supporter, at a position to which the supporter is fixed. The supporter is provided with a hole through which and into which the pin is inserted and fitted, at a position facing the frame. A movement of the supporter in the first direction is restricted by fitting the pin provided to the frame into the hole provided to the supporter, when the supporter is attached to the frame.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 4, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Kuniaki Yamamoto, Ryuichi Teramoto, Akira Nishijima, Takashi Kanemaru, Minoru Horinouchi
  • Publication number: 20200244369
    Abstract: An encoding device includes an encoding unit, DA converters, light sources, intensity modulators, and wavelength multiplexers. The encoding unit adds (NM/2) to an encoded signal having a negative minimum value in a range of the encoded signal among encoded signals of N channels of (NM+1) values obtained by calculating an inner product of a Hadamard matrix of N rows and N columns and a matrix having elements of N intensity signals of (M+1) values. The DA converters of the channels convert the encoded signals of the channels from digital signals into electrical analog signals. The light sources output light of wavelengths for use in the channels. The light intensity modulators of the channels intensity-modulate the light output from the light sources with the encoded signals converted into the electrical analog signals by the DA converters. The wavelength multiplexer outputs a wavelength-multiplexed signal obtained by wavelength-multiplexing the light intensity-modulated by the light intensity modulators.
    Type: Application
    Filed: April 7, 2020
    Publication date: July 30, 2020
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shuto YAMAMOTO, Akira MASUDA, Yoshiaki SONE, Mitsunori FUKUTOKU
  • Publication number: 20200237669
    Abstract: The present invention relates to a compound having a macromolecular carrier having a plurality of terminal groups, wherein the carbonyl group of serine is linked by a peptide bond or an ester bond directly or via a linker to the terminal groups, a carrier for drug delivery composed of the compound, and a medicament for preventing or treating renal diseases, containing the carrier for drug delivery and a drug bonded to the carrier directly or via a linker or encapsulated therein. According to the present invention, a carrier for drug delivery that is selectively accumulated in kidney in vivo can be provided.
    Type: Application
    Filed: July 6, 2018
    Publication date: July 30, 2020
    Inventors: Hidemasa Katsumi, Akira Yamamoto
  • Patent number: 10723840
    Abstract: Provided is a polyphenylene ether resin composition having excellent heat aging resistance and fluidity. A polyphenylene ether includes at least one structural unit selected from chemical formulae (1), (2), and (3).
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: July 28, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Chihiro Orimo, Toru Yamaguchi, Mihoko Yamamoto, Akira Mitsui
  • Patent number: 10725865
    Abstract: A storage unit includes a plurality of storage devices that form a RAID group, that are coupled to the same bus, and that communicate with each other. Each of the plurality of storage devices includes a device controller and a storage medium. The plurality of storage devices store each of data and parities generated on the basis of the data, the data and the parities being included in RAID stripes. A first device controller of a first storage device included in the RAID group transmits, to the plurality of storage devices included in the RAID group other than the first storage device, an instruction to transfer the data and/or the parities included in the RAID stripes and restores the data or the parity corresponding to the first storage device of the RAID stripes on the basis of the transferred data and the transferred parities.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: July 28, 2020
    Assignee: HITACHI LTD.
    Inventors: Mitsuhiro Okada, Akifumi Suzuki, Satoshi Morishita, Akira Yamamoto
  • Patent number: 10717273
    Abstract: A liquid ejection head includes an ejection orifice through which a liquid is ejected, a first liquid flow path which is in communication with the ejection orifice and through which the liquid flows, a second liquid flow path which is in communication with the ejection orifice on the opposite side of the first liquid flow path with respect to the ejection orifice 12 and through which the liquid flows, a first electrode positioned in the first liquid flow path 13, and a second electrode which is positioned in the second liquid flow path and generates an electro-osmotic flow in the liquid together with the first electrode.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: July 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nakagawa, Kazuhiro Yamada, Noriyasu Nagai, Takuro Yamazaki, Toru Nakakubo, Akira Yamamoto, Masafumi Morisue, Ryo Kasai
  • Patent number: 10718888
    Abstract: Provided is a laminate including a first polarizer, a first patterned optical anisotropic layer, a second patterned optical anisotropic layer, and a second polarizer in this order and an optically anisotropic layer disposed between the second polarizer and the second patterned optical anisotropic layer, in which an angle formed between an absorption axis of the first polarizer and an absorption axis of the second polarizer is 90°±5°; each of the first patterned optical anisotropic layer and the second patterned optical anisotropic layer has a plurality of phase difference regions having different slow axis directions in a plane of the first patterned optical anisotropic layer or the second patterned optical anisotropic layer; a white display state and a black display state are switched with each other; none of the slow axis directions of first phase difference regions and the slow axis directions of second phase difference regions are parallel or orthogonal to the absorption axes and transmission axes of the
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: July 21, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Yujiro Yanai, Akira Yamamoto
  • Publication number: 20200216598
    Abstract: The present invention is to provide a process for producing an oxymethylene copolymer, in which deteriorate due to oxidation hardly occurs, an amount of formaldehyde generated from the product when stored for a long time under environment of high temperature and high humidity is reduced, and occurrence of mold deposit during molding is small. A process for producing an oxymethylene copolymer includes Step 1 of polymerizing polymer raw materials containing trioxane and a comonomer in the presence of a specific amount of an acid catalyst, Step 2 of adding a hydroxylamine compound represented by the following general formula (1): to a product obtained in the Step 1 in an amount of 1 to 20-fold mol based on an amount of the acid catalyst and mixing these, and Step 3 of further melting and kneading a mixture of the product and the hydroxylamine compound obtained in the Step 2.
    Type: Application
    Filed: March 13, 2017
    Publication date: July 9, 2020
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., THAI POLYACETAL CO., LTD.
    Inventors: Yuuta YAMAMOTO, Daisuke SUNAGA, Akira ITO, Wandee THUAMTHONG, Yupin PATTAMAMONGKOLCHAI
  • Patent number: 10703105
    Abstract: A liquid ejection head is provided with an ejection orifice array having multiple ejection orifices in order to eject a liquid; multiple energy-generating elements for generating energy in order to eject the liquid; a substrate provided with the energy-generating elements; a through-port array having multiple through-ports penetrating the substrate; multiple linear liquid flow paths positioned between the through-port array and the ejection orifice array and connected to respective ejection orifices of the ejection orifice array and respective through-ports of the through-port array; and first and second electrodes arranged in each of the multiple liquid flow paths for generating an electroosmotic flow in the liquid.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: July 7, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nakagawa, Kazuhiro Yamada, Noriyasu Nagai, Takuro Yamazaki, Toru Nakakubo, Akira Yamamoto, Masafumi Morisue, Ryo Kasai
  • Patent number: 10705520
    Abstract: A self-moving apparatus that provides a service by moving to a destination and includes a detection unit and a reporting unit. A reception unit receives a user instruction for causing the self-moving apparatus to move to a predetermined destination if the self-moving apparatus is in a predetermined state relating to maintenance or printing or if the self-moving apparatus is changed to be in the predetermined state. A detection unit detects a state of the self-moving apparatus. A moving unit that moves to the predetermined destination if the self-moving apparatus is in the predetermined state or if the self-moving apparatus is changed to be in the predetermined state on the basis of a detection result obtained by the detection unit.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: July 7, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Mariko Miyazaki, Hideki Fujimoto, Hajime Kajiyama, Naoya Ogata, Akira Ichikawa, Tetsuya Kobayashi, Kunitoshi Yamamoto
  • Publication number: 20200210082
    Abstract: One or more storage systems are connected to one or more storage boxes comprising multiple storage devices. Multiple storage areas provided by one or more storage boxes include an allocated area, which is a storage area that is allocated to a virtual volume, and an empty area, which is a storage area that is not allocated to any logical volume. Multiple owner rights corresponding to multiple storage areas are set in one or more storage systems. A storage system having an empty area owner right changes an empty area to the allocated area by allocating the empty area. In a case where a configuration change (a relative change in the number of storage boxes with respect to the number of storage systems) is performed, a first storage system that exists after the configuration change sets, in the first storage system, either more or fewer owner rights than the owner rights, which have been allocated to the first storage system before the configuration change.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Akira YAMAMOTO, Miho IMAZAKI
  • Publication number: 20200210083
    Abstract: One or more storage systems are connected to one or more storage boxes comprising multiple storage devices. Multiple storage areas provided by one or more storage boxes include an allocated area, which is a storage area that is allocated to a virtual volume, and an empty area, which is a storage area that is not allocated to any logical volume. Multiple owner rights corresponding to multiple storage areas are set in one or more storage systems. A storage system having an empty area owner right changes an empty area to the allocated area by allocating the empty area. In a case where a configuration change (a relative change in the number of storage boxes with respect to the number of storage systems) is performed, a first storage system that exists after the configuration change sets, in the first storage system, either more or fewer owner rights than the owner rights, which have been allocated to the first storage system before the configuration change.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Akira YAMAMOTO, Miho IMAZAKI
  • Patent number: 10696843
    Abstract: Provided is a polyphenylene ether flame-retardant resin composition having excellent flame retardance and long-term flame retardance. The flame-retardant resin composition contains: (A) a resin including (A-1) a polyphenylene ether; and (B) a flame retardant. The (A-1) component has a content of 50 mass % or more when the flame-retardant resin composition minus ash content, corresponding to a residue obtained upon burning of the flame-retardant resin composition, is taken to be 100 mass %. A shaped article of 12.6 cm in length, 1.3 cm in width, and 1.6 mm in thickness formed from the flame-retardant resin composition exhibits a rate of change of chloroform-insoluble content of 15 mass % or less through aging in which the shaped article is left for 1,000 hours at 150° C. in an atmospheric air.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: June 30, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Chihiro Maeda, Mihoko Yamamoto, Akira Mitsui
  • Patent number: 10698627
    Abstract: A storage system as a storage cluster recognized as one storage device with respect to a host system specifies a primary volume, to which one or more snapshot volumes are associated, as a migration source primary volume and performs migration processing of migrating at least the migration source primary volume from among the migration source primary volume and a part of the snapshot volumes from a migration source storage device (storage device including specified migration source primary volume and one or more snapshot volume) to a migration target storage device.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: June 30, 2020
    Assignee: HITACHI, LTD.
    Inventors: Akihiro Hara, Akira Yamamoto, Masakuni Agetsuma, Hideo Saito
  • Publication number: 20200200235
    Abstract: There is provided a gear device including an input shaft to which power is input, an internal gear, and an external gear. The input shaft has an input shaft hollow portion that extends in an axial direction, and an internal gear portion that meshes with an input pinion to be rotationally driven. The internal gear portion is configured so that the input pinion internally meshing with the internal gear portion and the input shaft hollow portion do not overlap each other when viewed in the axial direction.
    Type: Application
    Filed: October 29, 2019
    Publication date: June 25, 2020
    Inventors: Akira Yamamoto, Mitsuhiro Tamura
  • Patent number: 10693349
    Abstract: The life estimation system is a life estimation system that estimates a life of the reduction gear including a reduction mechanism. The life estimation system includes a sensor that is to be mounted onto the reduction gear and detects information for identifying a stress generated in a specific part of the reduction gear, and an estimating unit that identifies the stress generated in the specific part based on detection information obtained by the sensor and estimates the life of the specific part based on the identified stress.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: June 23, 2020
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mitsuhiro Tamura, Akira Yamamoto
  • Patent number: 10693562
    Abstract: An encoding device includes an encoding unit, DA converters, light sources, intensity modulators, and wavelength multiplexers. The encoding unit adds (NM/2) to an encoded signal having a negative minimum value in a range of the encoded signal among encoded signals of N channels of (NM+1) values obtained by calculating an inner product of a Hadamard matrix of N rows and N columns and a matrix having elements of N intensity signals of (M+1) values. The DA converters of the channels convert the encoded signals of the channels from digital signals into electrical analog signals. The light sources output light of wavelengths for use in the channels. The light intensity modulators of the channels intensity-modulate the light output from the light sources with the encoded signals converted into the electrical analog signals by the DA converters. The wavelength multiplexer outputs a wavelength-multiplexed signal obtained by wavelength-multiplexing the light intensity-modulated by the light intensity modulators.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 23, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shuto Yamamoto, Akira Masuda, Yoshiaki Sone, Mitsunori Fukutoku
  • Patent number: 10688024
    Abstract: A cleaning composition having good foamability and being capable of producing fine and stable foams with resilient texture, more specifically, a cleaning composition including a surfactant, methyl cellulose, hydroxypropyl methyl cellulose, and a solvent.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: June 23, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Atsushi Yamamoto, Shingo Niinobe, Akira Kitamura
  • Publication number: 20200196432
    Abstract: A semiconductor apparatus includes a metal body in which a through hole is formed, a socket that covers the metal body without closing the through hole, a connection terminal connected to the metal body and exposed to an outside of the socket, a control board having a metal pattern and a circuit pattern, and a semiconductor chip having a control terminal connected to the circuit pattern via the through hole without being in contact with the metal body, the connection terminal being connected to the metal pattern.
    Type: Application
    Filed: July 21, 2017
    Publication date: June 18, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuki HATA, Akira YAMAMOTO, Shintaro ARAKI