Patents by Inventor Takashi Yashima

Takashi Yashima 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: 20220362892
    Abstract: A flux-cored wire comprising a flux which is a core and a hoop which is an outer skin or sheath is described. The flux includes a strong deoxidizing metal element containing Mg and Al, and a fluoride powder. At least 60 mass % of a strong deoxidizing metal powder related to the strong deoxidizing metal element has a grain size of at most 150 ?m. At least 60 mass % of the fluoride powder has a grain size of at most 75 ?m. The flux is present at a concentration of 10-30 mass % relative to a total mass of the flux-cored wire. The flux-cored wire also requires a specific composition of elements.
    Type: Application
    Filed: June 9, 2020
    Publication date: November 17, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Keito ISHIZAKI, Takashi YASHIMA, Shun IZUTANI
  • Publication number: 20220362787
    Abstract: A rotary atomization type painting apparatus has a bell cup attached to a rotary drive shaft. A side surface of the bell cup is formed to be parallel to the rotary drive shaft. An inner surface of the side surface portion is provided with a first groove portion, a second groove portion, and a third groove portion that are recessed toward a direction of an outer surface of the side surface portion. The first groove portion, the second groove portion, and the third groove portion are provided with a first insertion hole, a second insertion hole, and a third insertion hole. The first insertion hole, the second insertion hole, and the third insertion hole pass through the inner surface and the outer surface, and eject a paint to the outside of the bell cup.
    Type: Application
    Filed: May 9, 2022
    Publication date: November 17, 2022
    Inventors: Takashi Kikuchi, Osamu Yashima, Takumi Hasegawa
  • Publication number: 20220353519
    Abstract: According to one embodiment, a memory system includes a frequency value update unit, a first intra-group rearranging unit, a second intra-group rearranging unit, and a routing unit. The frequency value update unit adds a first value to each of one or more first frequency values that are associated with one or more first symbols, respectively, in one or more entries in a table. The first intra-group rearranging unit rearranges first entries, which belong to a first group, using frequency values in the first entries. The second intra-group rearranging unit rearranges second entries, which belong to a second group lower than the first group, using frequency values. The routing unit rearranges at least one of the first entries and at least one of the second entries.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 3, 2022
    Applicant: Kioxia Corporation
    Inventors: Daisuke YASHIMA, Masato SUMIYOSHI, Keiri NAKANISHI, Takashi MIURA, Kohei OIKAWA, Sho KODAMA, Youhei FUKAZAWA, Zheye WANG
  • Publication number: 20220297218
    Abstract: In this welding control method for a portable welding robot that moves along a guide rail, for using the portable welding robot to weld a workpiece including a groove: a groove shape detection position is established in at least one location in a welding sector extending from a welding starting point to a welding end point; the groove shape at a groove shape detection position Pn is sensed by means of a detecting means of the portable welding robot, which is moving along the guide rail; groove shape information is calculated from detection data obtained by the sensing; and a welding condition is acquired on the basis of the groove shape information.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 22, 2022
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), KOBELCO ROBOTiX Co., Ltd.
    Inventors: Takashi YASHIMA, Masaru KODAMA, Shinobu TODA, Hirofumi KAWASAKI
  • Patent number: 11431995
    Abstract: According to one embodiment, a memory system includes a frequency value update unit, a first intra-group rearranging unit, a second intra-group rearranging unit, and a routing unit. The frequency value update unit adds a first value to each of one or more first frequency values that are associated with one or more first symbols, respectively, in one or more entries in a table. The first intra-group rearranging unit rearranges first entries, which belong to a first group, using frequency values in the first entries. The second intra-group rearranging unit rearranges second entries, which belong to a second group lower than the first group, using frequency values. The routing unit rearranges at least one of the first entries and at least one of the second entries.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: August 30, 2022
    Assignee: Kioxia Corporation
    Inventors: Daisuke Yashima, Masato Sumiyoshi, Keiri Nakanishi, Takashi Miura, Kohei Oikawa, Sho Kodama, Youhei Fukazawa, Zheye Wang
  • Publication number: 20220269416
    Abstract: According to one embodiment, a memory system includes a compressor configured to output second data obtained by compressing input first data and a non-volatile memory to which third data based on the second data output from the compressor is written. The compressor includes a dictionary coding unit configured to perform dictionary coding on the first data, an entropy coding unit configured to perform entropy coding on the result of the dictionary coding, a first calculation unit configured to calculate compression efficiencies of the dictionary coding and the entropy coding, and a first control unit configured to control an operation of at least one of the dictionary coding unit and the entropy coding unit based on the compression efficiencies and a power reduction level.
    Type: Application
    Filed: June 14, 2021
    Publication date: August 25, 2022
    Applicant: Kioxia Corporation
    Inventors: Sho KODAMA, Keiri NAKANISHI, Masato SUMIYOSHI, Zheye WANG, Kohei OIKAWA, Youhei FUKAZAWA, Daisuke YASHIMA, Takashi MIURA
  • Publication number: 20220255556
    Abstract: According to one embodiment, a buffer stores first hash values and first complementary data. A first conversion unit converts consecutive characters in a second character string into second hash values and second complementary data. A search unit searches for consecutive first hash values from the buffer, and output a pointer. A selection unit selects consecutive first hash values and pieces of first complementary data from the buffer. A second conversion unit converts the consecutive first hash values into a third character string using the pieces of first complementary data. A comparison unit compares the second character string with the third character string to acquire a matching length. An output unit output the matching length with the pointer.
    Type: Application
    Filed: September 10, 2021
    Publication date: August 11, 2022
    Inventors: Daisuke YASHIMA, Kohei OIKAWA, Sho KODAMA, Keiri NAKANISHI, Masato SUMIYOSHI, Youhei FUKAZAWA, Zheye WANG, Takashi MIURA
  • Patent number: 11397546
    Abstract: A memory system including a storage device and a memory controller controlling the storage device and decoding an encoded data. The memory controller including: a history buffer storing a decoded data string; a history buffer read controller executing a read request to the history buffer; a decode executing section generating a first shaped data string based on the decoded data string read from the history buffer, generating a second shaped data string by referring the first shaped data string before the first shaped data string being written back to the history buffer in response to the read request, and generating a decoded result using the first shaped data string and the second shaped data string.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: July 26, 2022
    Assignee: Kioxia Corporation
    Inventors: Masato Sumiyoshi, Keiri Nakanishi, Takashi Miura, Kohei Oikawa, Daisuke Yashima, Sho Kodama, Youhei Fukazawa, Zheye Wang
  • Publication number: 20220219266
    Abstract: The present invention relates to a flux-cored wire for positive polarity gas-shielded arc welding use, in which a flux contains a metal powder and also contains BaF2 and SrF2 and AlF3 and/or CaF2 as fluorides wherein the content of BaF2 is 1.0 to 4.5%, the content of SrF2 is 2.0% or less, the content of CaF2 is 0.45% or less and the content of AlF3 is 0.70% or less, at least one of metal elements constituting the flux and the fluorides is a strong deoxidizing metal element having a specified standard formation Gibbs energy, and the content of each of an oxide and a carbonate in the flux is 0.5% or less.
    Type: Application
    Filed: May 1, 2020
    Publication date: July 14, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naoki MUKAI, Shun IZUTANI, Takashi YASHIMA
  • Publication number: 20210016386
    Abstract: A welding device for gas shielded arc welding includes: a portable welding robot mounted with a welding torch including a nozzle that guides jetting of shielding gas and a contact tip that performs energization on a consumable electrode; a feeding device that supplies the consumable electrode to the welding torch; a welding power source that supplies electric power to the consumable electrode via the contact tip; a gas supply source that supplies the shielding gas to be jetted from a nozzle end; and a control device that controls the portable welding robot. When the welding torch is seen from a side of jetting of the shielding gas, the contact tip is placed in an inside of an opening of the nozzle, the nozzle and the contact tip have a relatively movable structure, and an inner diameter of the nozzle end is within a range of 10-20 mm.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 21, 2021
    Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), KOBELCO ROBOTiX Co., Ltd.
    Inventors: Takashi YASHIMA, Masahiro YOKOTA, Shun IZUTANI, Hirofumi KAWASAKI, Shinobu TODA
  • Patent number: 10888959
    Abstract: The Cu core ball contains a Cu ball and a solder layer for covering a surface of the Cu ball. The Cu ball contains at least one element selected from Fe, Ag, and Ni in a total amount of 5.0 or more to 50.0 ppm by mass or lower, S in an amount of 0 or more to 1.0 ppm by mass or lower, P in an amount of 0 or more to less than 3.0 ppm by mass, and remainder of Cu and inevitable impurities. The Cu ball contains purity which is 99.995% or higher and 99.9995% by mass or lower, and sphericity which is 0.95 or higher. The solder layer includes Ag in an amount of more than 0 to 4.0% by mass or less, Cu in an amount of more than 0 to 3.0% by mass or less, and remainder of Sn.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: January 12, 2021
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Hiroyoshi Kawasaki, Shigeki Kondoh, Hiroki Sudo, Masato Tsuchiya, Takashi Yashima, Takahiro Roppongi, Daisuke Soma
  • Publication number: 20200353552
    Abstract: The present invention pertains to: a method for arc spot welding a steel plate having a carbon equivalent CeqBM of 0.35 or more (the carbon equivalent CeqBM is defined in the specification), the method being characterized in that a welding wire containing 98.5 mass % or more of Fe is used, and the ratio between the carbon equivalent CeqWM of a weld metal formed by the method (the carbon equivalent CeqWM of the weld metal is defined in the specification) and the carbon equivalent CeqBM of the steel plate, CeqWM/CeqBM is 0.2-1.0. According to the arc spot welding method, brittle fracture can be prevented and high joint strength can be obtained even when the C content in the steel plate is high.
    Type: Application
    Filed: August 2, 2017
    Publication date: November 12, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takashi YASHIMA, Reiichi SUZUKI, Minoru MIYATA
  • Patent number: 10639749
    Abstract: The Cu core ball contains a Cu ball and one or more metal layer for covering a surface of the Cu ball, each layer including one or more element selected from Ni, Co, Fe and Pd. The Cu ball contains at least one element selected from Fe, Ag, and Ni in a total amount of 5.0 or more to 50.0 ppm by mass or lower, S in an amount of 0 ppm by mass or more to 1.0 ppm by mass or lower, P in an amount of 0 ppm by mass or more to less than 3.0 ppm by mass, and remainder of Cu and inevitable impurities. The Cu ball contains purity which is 99.995% by mass or higher and 99.9995% or lower, sphericity which is 0.95 or higher and a diameter of 1 ?m or more to 1000 ?m or lower.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: May 5, 2020
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Hiroyoshi Kawasaki, Shigeki Kondoh, Hiroki Sudo, Masato Tsuchiya, Takashi Yashima, Takahiro Roppongi, Daisuke Soma
  • Publication number: 20200039006
    Abstract: The present invention relates to a method for arc-welding a steel plate having a C content of 0.08-0.30% by mass, wherein the arc welding method comprises welding under a condition whereby X represented by formula (1) is 200 or less using a welding wire in which the total content of Cr and Ni thereof is 1.00% by mass or greater. (1): X=0.8×(300-279[C]W-25[Si]W-35[Mn]W-49[Ni]W-47[Cr]W-61[Mo]W) +0.2×(300-279[C]BM-25[Si]BM-35[Mn]BM-49[Ni]BM-47[Cr]BM-61[Mo]BM) (where [C]W, [Si]W, [Mn]W, [Ni]W, [Cr]W, [Mo]W, [C]BM, [Si]BM, [Mn]BM, [Ni]BM, [Cr]BM, and [Mo]BM are defined in the specification).
    Type: Application
    Filed: April 26, 2018
    Publication date: February 6, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takashi YASHIMA, Reiichi SUZUKI, Minoru MIYATA
  • Publication number: 20190375053
    Abstract: The Cu core ball contains a Cu ball and a solder layer for covering a surface of the Cu ball. The Cu ball contains at least one element selected from Fe, Ag, and Ni in a total amount of 5.0 or more to 50.0 ppm by mass or lower, S in an amount of 0 or more to 1.0 ppm by mass or lower, P in an amount of 0 or more to less than 3.0 ppm by mass, and remainder of Cu and inevitable impurities. The Cu ball contains purity which is 99.995% or higher and 99.9995% by mass or lower, and sphericity which is 0.95 or higher. The solder layer includes Ag in an amount of more than 0 to 4.0% by mass or less, Cu in an amount of more than 0 to 3.0% by mass or less, and remainder of Sn.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 12, 2019
    Inventors: Hiroyoshi Kawasaki, Shigeki Kondoh, Hiroki Sudo, Masato Tsuchiya, Takashi Yashima, Takahiro Roppongi, Daisuke Soma
  • Publication number: 20190376161
    Abstract: A Cu core ball contains a Cu ball and at least one metal layer for covering a surface of the Cu ball. The metal layer is made of at least one element selected from the group of Ni, Co, Fe and Pd. The Cu ball contains at least one element selected from a group of Fe, Ag and Ni in a total amount of 5.0 ppm by mass or more to 50.0 ppm by mass or lower, S in an amount of 0 ppm by mass or more to 1.0 ppm by mass or lower, P in an amount of 0 ppm by mass or more to less than 3.0 ppm by mass, and remainder of Cu and inevitable impurities. The Cu ball contains purity which is 99.995% by mass or higher to 99.9995% by mass or lower, and sphericity which is 0.95 or higher.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 12, 2019
    Inventors: Hiroyoshi Kawasaki, Shigeki Kondoh, Hiroki Sudo, Masato Tsuchiya, Takashi Yashima, Takahiro Roppongi, Daisuke Soma
  • Publication number: 20190375054
    Abstract: The Cu core ball contains a Cu ball and one or more metal layer for covering a surface of the Cu ball, each layer including one or more element selected from Ni, Co, Fe and Pd. The Cu ball contains at least one element selected from Fe, Ag, and Ni in a total amount of 5.0 or more to 50.0 ppm by mass or lower, S in an amount of 0 ppm by mass or more to 1.0 ppm by mass or lower, P in an amount of 0 ppm by mass or more to less than 3.0 ppm by mass, and remainder of Cu and inevitable impurities. The Cu ball contains purity which is 99.995% by mass or higher and 99.9995% or lower, sphericity which is 0.95 or higher and a diameter of 1 ?m or more to 1000 ?m or lower.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 12, 2019
    Inventors: Hiroyoshi Kawasaki, Shigeki Kondoh, Hiroki Sudo, Masato Tsuchiya, Takashi Yashima, Takahiro Roppongi, Daisuke Soma
  • Publication number: 20190232411
    Abstract: The present invention pertains to: a method for arc spot welding a steel plate having a carbon equivalent CeqBM of 0.35 or more (the carbon equivalent CeqBM is defined in the specification) and containing 0.35 mass % or more of C, the method being characterized by forming a weld metal having a structure in which the proportion of an austenitic structure exceeds 80%; and a welding wire suitable for being used therefor. According to the arc spot welding method, brittle fracture can be prevented and high joint strength can be obtained even when the C content in the steel plate is high.
    Type: Application
    Filed: August 2, 2017
    Publication date: August 1, 2019
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takashi YASHIMA, Reiichi SUZUKI, Minoru MIYATA
  • Publication number: 20190111511
    Abstract: An arc welding device is provided with including: a wire feed motor; a rocker arm attached freely rotatably to an output shaft of the wire feed motor; a pair of wire feed rollers attached to the rocker arm; a rotation transmitting mechanism for transmitting the rotation of the wire feed motor to the wire feed roller; a rocker drive unit; and a welding power supply unit. The wire feed roller has inserted therein welding wire disposed along the rocking direction of the rocker arm. The welding wire is fed towards a torch tip by the wire feed roller, and arcing and shorting can be repeated with forward and backward movement by the rocker arm in the direction of the wire feed.
    Type: Application
    Filed: April 13, 2017
    Publication date: April 18, 2019
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Tokuji MARUYAMA, Reiichi SUZUKI, Takashi YASHIMA
  • Patent number: 9962786
    Abstract: In an arc welding method of performing welding by employing CO2 gas as shield gas, supplying a welding current to flow between a welding wire and a workpiece to be welded while feeding the welding wire toward the workpiece, and generating an arc with the welding current, the arc welding method includes a welding step of performing the welding of the workpiece while executing control to adjust the welding current, and a welding termination step of executing control to apply the welding current having a trapezoidal waveform when the welding of the workpiece is terminated.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 8, 2018
    Assignee: Kobe Steel, Ltd.
    Inventor: Takashi Yashima