Patents by Inventor Atsushi Sakai

Atsushi Sakai 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: 20210096569
    Abstract: A work machine control system includes: a position sensor detecting a position of a work machine traveling on a traveling path; first and second non-contact sensors provided in the work machine and detecting a position of an object around the work machine; a map data creation unit creating map data based on detection data of the position sensor and detection data of the first non-contact sensor; a first position calculation unit calculating a first position of the work machine by matching the map data and the detection data of the first non-contact sensor; a second position calculation unit calculating a second position of the work machine based on detection data of the second non-contact sensor; and an integrated position determination unit determining an integrated position of the work machine by integrating the first and second positions.
    Type: Application
    Filed: February 27, 2019
    Publication date: April 1, 2021
    Applicant: Komatsu Ltd.
    Inventors: Daisuke Tanaka, Tatsuya Shiga, Mitsuhiro Ryuman, Atsushi Sakai
  • Publication number: 20210074816
    Abstract: Semiconductor device has a cell region and a peripheral region, and has a drift layer, a trench, an gate dielectric film on an inner wall of the trench, a gate electrode, and a p-type first semiconductor region below the trench in the cell region on a semiconductor substrate. Further, in the peripheral region on the semiconductor substrate, p-type second semiconductor region is formed in the same layer as the p-type first semiconductor region. a width of the p-type first semiconductor region and a width of the p-type second semiconductor region are different.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 11, 2021
    Inventors: Atsushi SAKAI, Katsumi EIKYU, Yasuhiro OKAMOTO, Kenichi HISADA, Nobuo MACHIDA
  • Patent number: 10935660
    Abstract: A control system is provided with a position detection device which detects a position of a work machine, a contactless sensor which detects an object around the work machine in a contactless manner, a position calculation unit which calculates a position of the work machine on the basis of at least map data indicating a position of the object and detection data of the contactless sensor, and a diagnosis unit which compares the position of the work machine derived from detection data of the position detection device and the position of the work machine calculated by the position calculation unit and diagnoses that there is an abnormality in either the detection data of the position detection device or a calculation result of the position calculation unit.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 2, 2021
    Assignee: KOMATSU LTD.
    Inventors: Atsushi Sakai, Masanori Tojima
  • Patent number: 10910492
    Abstract: A semiconductor device which can secure a high breakdown voltage and to which a simplified manufacturing process is applicable and a method for manufacturing the semiconductor device are provided. An n+ buried region has a floating potential. An n-type body region is located on a first surface side of the n+ buried region. A p+ source region is located in the first surface and forms a p-n junction with the n-type body region. A p+ drain region is located in the first surface spacedly from the p+ source region. A p-type impurity region PIR is located between the n+ buried region and the n-type body region and isolates the n+ buried region and the n-type body region from each other.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: February 2, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Hiroki Fujii, Atsushi Sakai, Takahiro Mori
  • Patent number: 10884819
    Abstract: An information processing apparatus includes a memory and a processor coupled to the memory. The processor is configured to monitor each of loads of processor cores performing processes for which a parallel operation is inhibited. The processor cores are included in the information processing apparatus. The processor is configured to identify a first process that is being performed by a first processor core having a load that equals or exceeds a predetermined threshold value of a first load from among the processor cores based on a correspondence relationship between the processes and the first processor core.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: January 5, 2021
    Assignee: FUJITSU LIMITED
    Inventor: Atsushi Sakai
  • Publication number: 20200373251
    Abstract: A power module includes a base plate, a ceramic insulating substrate bonded on the base plate, and a semiconductor element bonded on the ceramic insulating substrate, wherein a surface of the base plate on a side opposite to the ceramic insulating substrate has a warp with a convex shape, and a linear thermal expansion coefficient ?1 (×10?6/K) of the base plate and a linear thermal expansion coefficient ?2 (×10?6/K) of the ceramic insulating substrate when a temperature decreases in the range of 25° C. to 150° C. satisfy the following Expression (1).
    Type: Application
    Filed: July 30, 2018
    Publication date: November 26, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hideki HIROTSURU, Yoshitaka TANIGUCHI, Kohki ICHIKAWA, Atsushi SAKAI
  • Publication number: 20200375029
    Abstract: A ceramic circuit board includes a ceramic substrate and metal layers provided to both surfaces of the ceramic substrate and containing Al and/or Cu, wherein a measurement value ?1 of a linear thermal expansion coefficient at 25° C. to 150° C. is 5×10?6 to 9×10?6/K, a ratio ?1/?2 of the ?1 to a theoretical value ?2 of the linear thermal expansion coefficient at 25° C. to 150° C. is 0.7 to 0.95, and at least one of the metal layers forms a metal circuit.
    Type: Application
    Filed: July 30, 2018
    Publication date: November 26, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Atsushi SAKAI, Hideki HIROTSURU, Kohki ICHIKAWA, Yoshitaka TANIGUCHI
  • Patent number: 10801846
    Abstract: A work machine management system includes: a position detector detecting a position of a work machine traveling on a travel route; a non-contact sensor detecting an object in a vicinity of the travel route in a non-contact manner; map data to accumulate information on existence and a position of the object in the travel route based on detection data obtained by the position detector and detection data obtained by the non-contact sensor; a travel route generator generating the travel route where the work machine travels; and an identifying unit to identify an area or a travel route having low perfection of map data of a travel route where the work machine travels. The travel route generator generates a travel route so as to cause the work machine not to pass the area or the travel route having the low perfection of the map data.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 13, 2020
    Assignee: KOMATSU LTD.
    Inventors: Atsushi Sakai, Masanori Minagawa, Tomonori Ozaki
  • Patent number: 10801852
    Abstract: A work machine management system includes: a position detecting device to detect a position of a work machine traveling on a travel route; a non-contact sensor to detect an object in a vicinity of the travel route in a non-contact manner; map data to accumulate information on existence and a position of the object in the travel route on the basis of detection data obtained by the position detecting device and detection data obtained by the non-contact sensor; a travel route generation unit to generate the travel route where the work machine travels; and an identifying unit to identify perfection of the map data.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 13, 2020
    Assignee: KOMATSU LTD.
    Inventors: Atsushi Sakai, Masanori Minagawa, Tomonori Ozaki
  • Publication number: 20200302027
    Abstract: According to an embodiment, a simulation method of a simulation device that simulates a semiconductor storage device connected to a first controller via a first communication channel. The simulation method includes: receiving first data from a portion of the first communication channel; receiving second data from the portion; and simulating a response of the semiconductor storage device based on first information. The first data is data which has been transferred from the first controller to the semiconductor storage device and of which writing is requested from the first controller. The second data is data which has been stored in the semiconductor storage device, and transferred from the semiconductor storage device to the first controller, and of which reading is requested from the first controller. The first information indicates a feature of the semiconductor storage device obtained based on comparison between the first data and the second data.
    Type: Application
    Filed: September 10, 2019
    Publication date: September 24, 2020
    Applicant: Toshiba Memory Corporation
    Inventor: Atsushi SAKAI
  • Publication number: 20200303896
    Abstract: An optical device includes: a substrate having a first surface, and a second surface opposite of the first surface; a plurality of surface emitting laser elements provided on the first surface of the substrate and configured to emit light in a direction intersecting the first surface; a plurality of optical elements disposed on the second surface so as to respectively correspond to the plurality of surface emitting laser elements; and an anti-reflection structure between the substrate and the plurality of optical elements.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 24, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: YUSUKE OHTA, TOSHIYUKI IKEOH, ATSUSHI SAKAI
  • Publication number: 20200289856
    Abstract: An ultrasonic therapy apparatus includes a plurality of ultrasonic transducers, a processor that identifies a position of an affected part and determines a focal point of ultrasonic waves radiated by the plurality of ultrasonic transducers based on the determined position of the affected part, and a drive circuit that generates a drive signal for driving the plurality of ultrasonic transducers at individual timings so that the ultrasonic waves are focused at the determined focal point.
    Type: Application
    Filed: September 18, 2018
    Publication date: September 17, 2020
    Inventors: Rei OGAWA, Hidenori SUZUKI, Atsushi SAKAI, Nao WAKABAYASHI, Hiroya TAKADA, Takayuki HOSHI
  • Patent number: 10768634
    Abstract: A control system includes: a position detector detecting a position of a work machine; a non-contact sensor detecting, in non-contact manner, an object beside a travel route; a map data generator generating management map data based on detection data obtained by the position detector and detection data obtained by the non-contact sensor; a first storage storing divided map data pieces; a second storage different from the first storage; an update unit determining specific map data from among the plurality of divided map data pieces stored in the first storage based on detection data of the position detector, and cause the second storage to read the specific map data; and a position calculator calculating a position of a work machine by matching the specific map data read into the second storage with the detection data obtained by the non-contact sensor.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: September 8, 2020
    Assignee: Komatsu Ltd.
    Inventor: Atsushi Sakai
  • Publication number: 20200128677
    Abstract: A method for producing a ceramic circuit board including a ceramic substrate and a metal circuit formed on the ceramic substrate. The disclosed method includes a step of forming the first metal layer in contact with the ceramic substrate by spraying a first metal powder containing at least either of aluminum particles or aluminum alloy particles together with an inert gas onto a surface of a ceramic substrate from a nozzle, in which the first metal powder is heated to from 10° C. to 270° C. and then ejected from the nozzle 10 and a gauge pressure of the inert gas at an inlet of the nozzle 10 is from 1.5 to 5.0 MPa, a step of subjecting the first metal layer to a heat treatment in an inert gas atmosphere, and the like.
    Type: Application
    Filed: January 16, 2018
    Publication date: April 23, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Atsushi SAKAI, Yoshitaka TANIGUCHI, Suzuya YAMADA
  • Publication number: 20200120809
    Abstract: A method for manufacturing an aluminum circuit board including a step of spraying a heated metal powder containing aluminum particles and/or aluminum alloy particles to a ceramic base material, and of forming a metal layer on a surface of the ceramic base material. A temperature of at least a part of the metal powder is higher than or equal to a softening temperature of the metal powder and lower than or equal to a melting point of the metal powder at a time point of reaching the surface of the ceramic base material. A velocity of at least a part of the metal powder is greater than or equal to 450 m/s and less than or equal to 1000 m/s at the time point of reaching the surface of the ceramic base material.
    Type: Application
    Filed: February 22, 2018
    Publication date: April 16, 2020
    Applicants: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, DENKA COMPANY LIMITED
    Inventors: Seiji KURODA, Hiroshi ARAKI, Akira HASEGAWA, Makoto WATANABE, Atsushi SAKAI, Yoshitaka TANIGUCHI, Suzuya YAMADA
  • Patent number: 10577483
    Abstract: Provided is a clarifying agent composition which is capable of yielding a molded article having excellent transparency whose initial coloration is suppressed. The clarifying agent composition is characterized by comprising 1.0 to 10 parts by mass of a colorant with respect to 100 parts by mass of a clarifying agent represented by the following Formula (1): (wherein, R1 to R4 each independently represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms; R5 represents a hydrogen atom or a methyl group; n represents 1 or 2; and M represents an alkali metal when n is 1, or Al(OH) when n is 2).
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: March 3, 2020
    Assignee: ADEKA CORPORATION
    Inventors: Takuya Maeda, Atsushi Sakai, Naoko Tanji, Naoshi Kawamoto
  • Patent number: 10520320
    Abstract: A management system 1 for a work machine includes: a plurality of dump trucks 2 each creating a map information piece DTI of a sectioned region DT around the own vehicle; and a management device 10 that manages map information pieces DTI of a plurality of sectioned regions DT created by the plurality of dump trucks 2 and transmits, to each of the dump trucks 2, a map information piece DTI of a sectioned region DT where each of the dump trucks 2 exists and a map information piece DTI of a sectioned region DT adjacent to the sectioned region DT where each of the dump trucks 2 exists on the basis of information related to a position of each of the dump trucks 2.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: December 31, 2019
    Assignee: KOMATSU LTD.
    Inventors: Atsushi Sakai, Masanori Tojima, Tomonori Ozaki
  • Publication number: 20190364667
    Abstract: A method for producing a ceramic circuit board including a ceramic substrate and a metal layer formed on the ceramic substrate, includes a step of forming the metal layer on the ceramic substrate by spraying a metal powder after accelerating the metal powder to a velocity of from 250 to 1050 m/s as well as heating the metal powder to from 10° C. to 270° C. and a step of subjecting the ceramic substrate and the metal layer to a heat treatment in an inert gas atmosphere.
    Type: Application
    Filed: January 16, 2018
    Publication date: November 28, 2019
    Applicants: SHINSHU UNIVERSITY, DENKA COMPANY LIMITED
    Inventors: Kazuhiko SAKAKI, Atsushi SAKAI, Suzuya YAMADA, Yoshitaka TANIGUCHI
  • Patent number: 10461871
    Abstract: A management apparatus includes a memory and a processor coupled to the memory. The processor is configured to broadcast an activation request to a plurality of information processing devices having a reception period during which the activation request is received. The reception period occurs in a predetermined cycle. The processor is configured to receive a confirmation response from first information processing devices among the plurality of information processing devices. The first information processing devices receive the activation request. The processor is configured to issue an activation instruction to a predetermined number of second information processing devices among the first information processing devices. The activation instruction instructs to activate the second information processing devices. The processor is configured to issue, to the first information processing devices other than the second information processing devices, an activation prohibition instruction to prohibit activation.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: October 29, 2019
    Assignee: FUJITSU LIMITED
    Inventor: Atsushi Sakai
  • Publication number: 20190278632
    Abstract: An information processing apparatus includes a first memory and a processor coupled to the first memory. The processor determines whether an additional storage amount requested by a virtual machine exceeds an allocatable storage amount for the virtual machine within a storage capacity of the first memory. The processor determines, in a case where it is determined that the additional storage amount exceeds the allocatable storage amount, whether it is possible to allocate a required storage amount from a second memory in another information processing apparatus. The required storage amount is equivalent to a shortage in storage amount in the first memory to fully allocate the additional storage amount. The processor requests the another information processing apparatus to allocate the required storage amount in a case where it is determined that it is possible to allocate the required storage amount from the second memory.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SAKAI