Patents by Inventor Tadashi Itoyama

Tadashi Itoyama 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).

  • Welded structure, laser welding method, and laser welding device
    Patent number: 10286492
    Abstract: A nozzle as a welded structure includes a nozzle body, and a buckling prevention fin joined to the nozzle body by laser welding, in which an end of the buckling prevention fin before laser welding is disposed to face the nozzle body, an installed state of the nozzle body and the buckling prevention fin includes an installed state in which a gap is formed between the nozzle body and the buckling prevention fin, and the buckling prevention fin has a beveled portion which is beveled at the end facing the nozzle body.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: May 14, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takehisa Okuda, Tadashi Itoyama, Yasuyuki Fujiya
  • WELDED STRUCTURE, LASER WELDING METHOD, AND LASER WELDING DEVICE
    Publication number: 20170036302
    Abstract: A nozzle as a welded structure includes a nozzle body, and a buckling prevention fin joined to the nozzle body by laser welding, in which an end of the buckling prevention fin before laser welding is disposed to face the nozzle body, an installed state of the nozzle body and the buckling prevention fin includes an installed state in which a gap is formed between the nozzle body and the buckling prevention fin, and the buckling prevention fin has a beveled portion which is beveled at the end facing the nozzle body.
    Type: Application
    Filed: April 10, 2015
    Publication date: February 9, 2017
    Inventors: Takehisa OKUDA, Tadashi ITOYAMA, Yasuyuki FUJIYA
  • Heat plate unit and double facer for fabricating double-faced corrugated fiberboard
    Patent number: 8307870
    Abstract: A double facer that fabricates a corrugated fiberboard and that includes heat plate units having thin walls aims at improving the heat conductive efficiency to fiberboard sheets in order to enhance responsibility to the setting temperature and concurrently avoiding thermal deformation of the heat plates due to a difference in temperature between the top surface and the bottom surface.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: November 13, 2012
    Assignee: Mitsubishi Heavy Industries Printing & Packing Machinery, Ltd.
    Inventors: Tadashi Itoyama, Hiroshi Ishibuchi, Toshinao Okihara, Kazuhito Ohira, Takashi Nitta
  • HEAT PLATE UNIT AND DOUBLE FACER FOR FABRICATING DOUBLE-FACED CORRUGATED FIBERBOARD
    Publication number: 20110209862
    Abstract: A double facer that fabricates a corrugated fiberboard and that includes heat plate units having thin walls aims at improving the heat conductive efficiency to fiberboard sheets in order to enhance responsibility to the setting temperature and concurrently avoiding thermal deformation of the heat plates due to a difference in temperature between the top surface and the bottom surface.
    Type: Application
    Filed: November 25, 2009
    Publication date: September 1, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES PRINTING & PACKAGING MACHINERY, LTD.
    Inventors: Tadashi Itoyama, Hiroshi Ishibuchi, Toshinao Okihara, Kazuhito Ohira, Takashi Nitta
  • Double facer in apparatus for manufacturing corrugated board and method of controlling heating of the double facer
    Publication number: 20100186896
    Abstract: In a double facer in which a one-sided corrugated board and a liner sheet which are web-like and which are superposed with each other are glued to each other while they travels on a heating plate so as to produce a corrugated board, the heating plate has a thin wall thickness so as to enhance the efficiency of heat transfer to a paper sheet which travels on the upper surface of the heating plate, and the heating plate 20 is provided at the lower surface thereof with a heat radiation means (having the configuration that reinforcing ribs 22 are formed at the lower surface of the heating plate in a direction orthogonal to the direction of travel of a paper sheet, having their height which are successively decreased, or several steam through-holes 51 are formed in the heating plate, and are adapted to be fed therein with saturated steam whose pressure or temperature is successively lowered) in order to decrease a temperature difference between the upper surface and the lower surface of the heating plate so as to
    Type: Application
    Filed: February 5, 2008
    Publication date: July 29, 2010
    Inventors: Tadashi Itoyama, Hiroshi Ishibuchi, Kazukiyo Kono, Masashi Sasaki, Toshihide Kato, Toshinao Okihara