Patents by Inventor Koichi Yoshioka

Koichi Yoshioka 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: 11946112
    Abstract: A high-strength steel sheet of the present invention has a specific chemical composition. Furthermore, in the steel sheet, a degree of Mn segregation in a specific region is 1.5 or less; a maximum P concentration in a specific region is 0.08 mass % or less; in a specific region, at least one specific MnS particle group is present, the number of specific MnS particle groups is 2.0 or fewer per 1 mm2, and the number of specific oxide-based inclusions is 8 or fewer per 1 mm2; of all oxide-based inclusions, oxide-based inclusions having a specific composition are present in a number ratio of 80% or greater; the microstructure includes, in terms of a volume fraction, 30 to 95% martensite, 5 to 70% ferrite phase, less than 30% (and 0% or greater) bainite, and less than 2.0% (and 0% or greater) austenite phase; and a tensile strength is 980 MPa or greater.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: April 2, 2024
    Assignee: JFE Steel Corporation
    Inventors: Yoshihiko Ono, Yuma Honda, Shimpei Yoshioka, Koichi Taniguchi, Hiroshi Matsuda, Takeshi Murai, Nobuyuki Nakamura
  • Patent number: 8451592
    Abstract: Provided is a liquid crystal display device (69) including: a liquid crystal display panel unit (49); a backlight unit (59); and a front bezel (BZ1) and a rear bezel (BZ2) for housing the liquid crystal display panel unit and the backlight unit. The liquid crystal display panel unit includes an FPC board (1) which winds around side walls (WL2) and a bottom surface (31) of the rear bezel so as to cover the side walls (WL2) and the bottom surface (31). Outer claw sections (CW1) projecting inward from the side walls (WL1) of the front bezel and inner claw sections (CW2) projecting outward from the side walls of the rear bezel are engaged with each other through openings (HL) provided in the FPC board, thereby integrating the front bezel and the rear bezel.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: May 28, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Norihisa Shintani, Nobuaki Takahashi, Masahiro Imai, Koichi Yoshioka
  • Patent number: 8437140
    Abstract: An FPC board (1) is mounted on a front bezel (BZ1) and a rear bezel (BZ2). The outer claw (CW1) of the front bezel (BZ1) and the inner claw (CW2) of the rear bezel (BZ2) are engaged with each other while holding the ground portion (12) of the FPC board (1) therebetween.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: May 7, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kohei Kitagawa, Nobuaki Takahashi, Masahiro Imai, Koichi Yoshioka
  • Publication number: 20110038112
    Abstract: Provided is a liquid crystal display device (69) including: a liquid crystal display panel unit (49); a backlight unit (59); and a front bezel (BZ1) and a rear bezel (BZ2) for housing the liquid crystal display panel unit and the backlight unit. The liquid crystal display panel unit includes an FPC board (1) which winds around side walls (WL2) and a bottom surface (31) of the rear bezel so as to cover the side walls (WL2) and the bottom surface (31). Outer claw sections (CW1) projecting inward from the side walls (WL1) of the front bezel and inner claw sections (CW2) projecting outward from the side walls of the rear bezel are engaged with each other through openings (HL) provided in the FPC board, thereby integrating the front bezel and the rear bezel.
    Type: Application
    Filed: March 13, 2009
    Publication date: February 17, 2011
    Inventors: Norihisa Shintani, Nobuaki Takahashi, Masahiro Imai, Koichi Yoshioka
  • Publication number: 20110038128
    Abstract: An FPC board (1) is mounted on a front bezel (BZ1) and a rear bezel (BZ2). The outer claw (CW1) of the front bezel (BZ1) and the inner claw (CW2) of the rear bezel (BZ2) are engaged with each other while holding the ground portion (12) of the FPC board (1) therebetween.
    Type: Application
    Filed: March 2, 2009
    Publication date: February 17, 2011
    Inventors: Kohei Kitagawa, Nobuaki Takahashi, Masahiro Imai, Koichi Yoshioka
  • Patent number: 6432612
    Abstract: An ultraviolet-curable type photo solder resist ink comprises the following components (A) to (E). That is. the component (A) is an ultraviolet-curable resin having at least two ethylenically unsaturated groups and a carboxyl group per one molecule thereof. The component (B) is an epoxy compound having at least two epoxy groups per one molecule thereof. The component (C) is at least one selected from a compound having at least one carboxyl group and a polycarboxylic acid anhydride. The component (D) is a photopolymerization initiator. The component (E) is a diluent. This photo solder resist ink shows a good developing property even when a developer having a pH value of about 10 is used, and is excellent in a storage stability of resist, electrical corrosion resistance, electric performance, chemical resistance, plating resistance, heat resistance to solder, adhesion, and pencil hardness.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: August 13, 2002
    Assignee: Goo Chemical Co., Ltd.
    Inventors: Nobuhito Hamada, Koichi Yoshioka, Soichi Hashimoto
  • Patent number: 6136506
    Abstract: An ultraviolet-curable and alkali-developing type photo solder resist ink comprises an epoxy resin obtained by extending chains of an epoxy compound by an isocyanate compound having at least two isocyanate groups per one molecule of the isocyanate compound, an ultraviolet-curable resin having carboxyl group and an ethylenically unsaturated group having a photopolymerization capability, a photopolymerization initiator, and a diluent. The resist ink shows a wide precuring acceptable width for providing an extended shelf life, a good tacky-dry property after a precuring step, excellent light-sensitivity at an exposing step, superior resolution, and improved removability of a film of the resist ink by an alkaline solution at a developing step. In addition, a solder resist obtained by a post-baking step of the resist ink film provides excellent resistances to molten solder and gold plating.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: October 24, 2000
    Assignee: GOO Chemical Co., Ltd.
    Inventors: Soichi Hashimoto, Koichi Yoshioka, Masahiro Mizushima, Toshikazu Oda
  • Patent number: 4943418
    Abstract: In a method of preparing high-purity manganese compounds, wherein the method comprises adding a member selected from ferromanganese and metallic manganeses to an aqueous electrolyte-containing solution, dissolving said member while stirring and maintaining a pH of 2 to 9, and then removing insolubles by filtration and recovering solubles by precipitation, heavy metal elements as well as non-metllic elements, such as P, Si, etc. can be removed efficiently, and high-purity manganese compounds of stable quality can be prepared.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: July 24, 1990
    Assignee: Japan Metals & Chemicals Co., Ltd.
    Inventors: Koichi Kambe, Kiyoshi Matsuura, Tatsuo Seino, Yoshiyuki Kimura, Hiroshi Kemmochi, Koichi Yoshioka, Hideaki Hohnoki
  • Patent number: 4941062
    Abstract: A magnetic head positioning mechanism for a magnetic disk device having a pivot mechanism which comprises a pivot shaft supported by a housing at least having two opposite plates, a carriage which is swingably supported by the pivot shaft, head-arms which are fixed to the carriage on base ends thereof and are attached magnetic heads at tip ends thereof, and a driving portion which is connected to the carriage at the opposite side of the head-arms; the carriage, which is positioned at the rotational center of the pivot mechanism, is composed of materials having higher specific gravity than the head-arms; the center of gravity of the pivot mechanism is very close to the pivot shaft as the rotational center, therefore the stable driving control is effected even when the magnetic device is arranged such that the head-arms pivot on a horizontal axis.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: July 10, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Koichi Yoshioka
  • Patent number: 4698339
    Abstract: A compound of the general formula: ##STR1## wherein X is a lower alkylene group which may optionally be substituted by a hydroxyl group, or a lower alkenylene group, Y is (1) a lower alkyl group, (2) a cycloalkyl group containing 3 to 8 carbon atoms, (3) a lower alkenyl group, (4) an aryl group, (5) an aralkyl group or (6) a 3- to 8-membered heterocyclic group, or the partial structural formula Y--SO.sub.2 --X--, with X and Y being combined with each other, represents a group of the formula: ##STR2## wherein l is an integer of 0 to 3, and m and n each is an integer of 0 to 6, provided that the sum of m and n is in the range of 2 to 6, and R is a hydrocarbon group which may optionally be substituted or a 3- to 8-membered heterocyclic group, or a pharmaceutically acceptable salt thereof a method of production thereof and use thereof. The compound (I) has antimicrobial and .beta.-lactamase inhibitory activities.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: October 6, 1987
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Koichi Yoshioka, Norikazu Tamura, Hideaki Natsugari
  • Patent number: 4472369
    Abstract: Ferrite having a uniform degree of oxidation is produced at a higher rate of ferrite forming reaction by pelletizing a mixture of iron oxide and ferromanganese powders and calcining the mixture at a temperature of 900.degree. C. or higher. Zinc oxide, magnesium oxide and/or nickel oxide may be further added to the mixture, as required.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: September 18, 1984
    Assignee: Japan Metals and Chemicals Co., Ltd.
    Inventors: Koichi Kambe, Tsugunori Honda, Toshio Toyota, Mitsuharu Tominaga, Koichi Yoshioka