Patents by Inventor Yasuyuki Yokota

Yasuyuki Yokota 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: 20210138591
    Abstract: A wire for gas-shielded arc welding includes, based on a total mass of the wire: C: 0.01 mass % or more and 0.10 mass % or less, Si: 0.05 mass % or more and 0.55 mass % or less, Mn: 1.60 mass % or more and 2.40 mass % or less, Ti: 0.05 mass % or more and 0.25 mass % or less, Cu: 0.01 mass % or more and 0.30 mass % or less, S: 0.001 mass % or more and 0.020 mass % or less, N: 0.0045 mass % or more and 0.0150 mass % or less, Al: 0.10 mass % or less, and P: 0.025 mass % or less, with the remainder being Fe and inevitable impurities. In the wire, the following relationship is satisfied: 0.1?[Ti]/[Si]?3.0, where [Si] is the content of Si (mass %) and [Ti] is the content of Ti (mass %).
    Type: Application
    Filed: May 22, 2020
    Publication date: May 13, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kazuya IKAI, Hikaru KINASHI, Yasuyuki YOKOTA
  • Publication number: 20200114453
    Abstract: An arc welding method includes performing welding by using a gas and a solid wire. The gas contains Ar. The solid wire includes a steel core wire and a copper plating film formed on a surface of the steel core wire, and the copper plating film has an average grain diameter of 600 nm or less.
    Type: Application
    Filed: June 13, 2018
    Publication date: April 16, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hikaru KINASHI, Yasuyuki YOKOTA, Koji SATO
  • Patent number: 8049990
    Abstract: A cleaning tape has a base tape made of a synthetic resin and a cleaning layer formed on a surface of this base tape. The cleaning layer has a binding agent and a large number of spherical particles dispersed in the binding agent in a single particle layer. Such a cleaning tape is capable of removing very small unwanted protrusions and particles on the surface of a target object such as a magnetic hard disk without forming scratches.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: November 1, 2011
    Assignee: Nihon Micro Coating Co., Ltd.
    Inventors: Yuji Horie, Yasuyuki Yokota, Jun Tamura, Akihiro Sakamoto, Noriyuki Kumasaka
  • Publication number: 20090153534
    Abstract: A semiconductor integrated circuit device and a display apparatus each having enhanced electromagnetic immunity realized using a simple configuration are provided. The semiconductor integrated circuit device has a group of registers, an interface circuit, and a timing generation circuit. The signal processing circuit has a signal processing function which is set by setting information stored in the group of registers. The timing generation circuit generates a periodic timing signal and supplies it to the interface circuit. The interface circuit periodically, based on the timing signal, writes setting information inputted from an external terminal to the group of registers.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 18, 2009
    Inventors: Yasuyuki YOKOTA, Yasuhiro Ogata
  • Publication number: 20090092023
    Abstract: A cleaning tape has a base tape made of a synthetic resin and a cleaning layer formed on a surface of this base tape. The cleaning layer has a binding agent and a large number of spherical particles dispersed in the binding agent in a single particle layer. Such a cleaning tape is capable of removing very small unwanted protrusions and particles on the surface of a target object such as a magnetic hard disk without forming scratches.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 9, 2009
    Applicant: NIHON MICRO COATING CO., LTD.
    Inventors: Yuji Horie, Yasuyuki Yokota, Jun Tamura, Akihiro Sakamoto, Noriyuki Kumasaka
  • Patent number: 7485829
    Abstract: A method for efficient production of a welding solid wire free of copper plating. The method consists of drawing by means of roller dies with the help of a dry solid lubricant for drawing which is at least either of sodium stearate or potassium stearate, removing the lubricant from the wire surface by means of a washing device, and applying a lubricant for wire feeding to the surface of the drawn wire by means of an oiling device. High-speed drawing by means of roller dies makes a stock wire into a welding solid wire having the diameter of the finished wire or nearly finished wire. The drawing step is followed by the washing step and the lubricant applying step, which are all accomplished in-line.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: February 3, 2009
    Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yoshihiro Konishi, Hiroyuki Shimizu, Yasuyuki Yokota
  • Publication number: 20080076327
    Abstract: Polishing slurry is caused to be present between a surface of a soft magnetic layer and a polishing tool such as a polishing pad and the surface of the soft magnetic layer and the polishing tool are moved relative to each other. The polishing slurry contains silica particles as abrading particles, compounds containing carboxylic acid and amino polycarboxylic acid and an oxidizing agent as a polishing accelerator, organic and/or inorganic compound of phosphoric acid, nitride and/or nitrite as an anti-corrosion agent and a pH conditioner such that the slurry has pH value between 4 and 11.
    Type: Application
    Filed: August 17, 2007
    Publication date: March 27, 2008
    Inventors: Kazuei Yamaguchi, Yasuyuki Yokota, Sanaki Horimoto
  • Publication number: 20070087668
    Abstract: Texturing marks are formed on the surface of a substrate of a magnetic hard disk first by forming approximately concentric circular preliminary marks in a first step and then forming in a second step approximately concentric circular texturing marks on the surface of the substrate based on the preliminary marks formed in the first step. The surface after the texturing marks are formed in the second step has average surface roughness in the range of 1 ? or more and 6 ? or less and a ratio of maximum surface roughness to the average surface roughness in the range of less than 10. A foamed tape and a lubricant not containing any abrading particles are used in the second step.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 19, 2007
    Inventors: Yasuyuki Yokota, Takashi Arahata, Hiromitsu Okuyama
  • Publication number: 20060027527
    Abstract: A perpendicular magnetic recording disk is produced by polishing to make smoother both surfaces of a substrate and sequentially forming a soft magnetic layer, a perpendicular recording layer and a protective layer on each of the polished surfaces of the substrate. The surfaces of the soft magnetic layers are polished by a fixed particle polishing method to be made smoother, and the perpendicular recording layers is formed on the smoothed surfaces of the soft magnetic layers either directly or with an intermediate layer in between.
    Type: Application
    Filed: July 29, 2005
    Publication date: February 9, 2006
    Inventors: Yasuyuki Yokota, Hisatomo Ohno, Noriyuki Kumasaka
  • Publication number: 20050045699
    Abstract: A method for efficient production of a welding solid wire free of copper plating. The method consists of drawing by means of roller dies with the help of a dry solid lubricant for drawing which is at least either of sodium stearate or potassium stearate, removing the lubricant from the wire surface by means of a washing device, and applying a lubricant for wire feeding to the surface of the drawn wire by means of an oiling device. High-speed drawing by means of roller dies makes a stock wire into a welding solid wire having the diameter of the finished wire or nearly finished wire. The drawing step is followed by the washing step and the lubricant applying step, which are all accomplished in-line.
    Type: Application
    Filed: August 4, 2004
    Publication date: March 3, 2005
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yoshihiro Konishi, Hiroyuki Shimizu, Yasuyuki Yokota
  • Patent number: 6664510
    Abstract: A plating-free solid wire for arc welding has pits opening on its circumference, and wider inside than at each opening, and/or pits having a portion non-irradiated with an externally incoming light. A sulfide and a polyisobutene-containing oil are present in the pits and/or on the wire surface, the latter being present in an amount of 0.1-2 g/10 kg of wire. Twenty or more pits are present in total per and along wire circumference. The effective pit length ratio is 0.5% inclusive-50% exclusive. 0.1-2 g of the oil is present per 10 kg of wire. 0.01-0.5 g/10 kg of 0.1-10-&mgr;m-particle-dia MoS2 is present in “bottleneck-like and/or cave-like pits”, on the wire surface or immediately under the wire surface. A 2-10 mass ppm/total wire mass of K compound in K is present in the pits and/or on the wire surface. These ensure good feedability and lubricating properties, and less spatters.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: December 16, 2003
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takaaki Ito, Hiroyuki Shimizu, Yasuyuki Yokota, Tsuyoshi Kurokawa, Fusaki Koshiishi
  • Publication number: 20030085211
    Abstract: A plating-free solid wire for arc welding has pits opening on its circumference, and wider inside than at each opening, and/or pits having a portion non-irradiated with an externally incoming light. A sulfide and a polyisobutene-containing oil are present in the pits and/or on the wire surface, the latter being present in an amount of 0.1-2 g/10 kg of wire. Twenty or more pits are present in total per and along wire circumference. The effective pit length ratio is 0.5% inclusive-50% exclusive. 0.1-2 g of the oil is present per 10 kg of wire. 0.01-0.5 g/10 kg of 0.1-10-&mgr;m-particle-dia MoS2 is present in “bottleneck-like and/or cave-like pits”, on the wire surface or immediately under the wire surface. A 2-10 mass ppm/total wire mass of K compound in K is present in the pits and/or on the wire surface. These ensure good feedability and lubricating properties, and less spatters.
    Type: Application
    Filed: August 22, 2002
    Publication date: May 8, 2003
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventors: Takaaki Ito, Hiroyuki Shimizu, Yasuyuki Yokota, Tsuyoshi Kurokawa, Fusaki Koshiishi