Patents by Inventor Masahiro Shimamura

Masahiro Shimamura 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: 20210069767
    Abstract: A method of producing aluminum cans, including an ironing step using an ironing die (30). The ironing die has a carbon film (50) formed as to cover a working surface thereof. The carbon film exhibits a Raman spectrum such that an intensity ratio represented by ID/IG wherein ID is a maximum peak intensity at 1333±10 cm?1 in the Raman spectrum of the surface of said carbon film, and IG is a maximum peak intensity at 1500±100 cm?1 in the Raman spectrum of the surface of said carbon film, is not less than 1.2. The surface of the carbon film is a smooth surface having an arithmetic mean roughness R of not more than 0.05 ?m. Further, the ironing step includes iron-working an aluminum sheet in a dry process using no lubricant while maintaining an ironing ratio in excess of 40%.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Takuho Kumagai, Kenichi Takao, Ryozo Shiroishi, Masahiro Shimamura, Naoya Matsumoto
  • Publication number: 20210023603
    Abstract: A metallic worked article suppressing the worked surfaces from being scratched during the plastic work that is conducted aiming at reducing the thickness or decreasing the diameter. The metallic worked article has a reduced thickness or a decreased diameter as obtained through the plastic work, wherein on the worked surface thereof, the ratio Ra1/Ra2 of an arithmetic mean roughness Ra1 measured in a direction at right angles with the direction of working and an arithmetic mean roughness Ra2 measured in the direction of working, is from 0.5 to 1.5.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 28, 2021
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Takuho KUMAGAI, Ryozo SHIROISHI, Naoya MATSUMOTO, Masahiro SHIMAMURA, Tomohiro OGAWA
  • Patent number: 10155293
    Abstract: The diamond surface polishing method according to the present invention involves polishing a polished object, the surface of which is made of diamond, by rubbing a polishing member having an elongated shape such as a linear or belt-like shape and containing at least a metal or a metal oxide against the diamond surface, wherein a pressing force of the polishing member is controlled in accordance with material properties of the polishing member and/or a shape of the polished object and a diamond crystal size in a rubbing section so that contact surface pressure in a machining area becomes uniform.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: December 18, 2018
    Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Masahiro Shimamura, Kenichi Takao, Ryozo Shiroishi
  • Publication number: 20180229287
    Abstract: A die (30) for ironing working, the die (30) having a carbon film 50 covering at least a working surface (41) thereof, the carbon film (50) exhibiting such a Raman spectrum that an intensity ratio represented by the following formula (1): ID/IG??(1) wherein ID is a maximum peak intensity at 1333±10 cm?1 in the Raman spectrum of the surface of the carbon film, and IG is a maximum peak intensity at 1500±100 cm?1 in the Raman spectrum of the surface of the carbon film, is not less than 1.0, and the surface of the carbon film 50 being a smooth surface having an arithmetic mean roughness R of not more than 0.1 ?m.
    Type: Application
    Filed: August 15, 2016
    Publication date: August 16, 2018
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Takuho KUMAGAI, Kenichi TAKAO, Ryozo SHIROISHI, Masahiro SHIMAMURA, Naoya MATSUMOTO
  • Publication number: 20180021912
    Abstract: The diamond surface polishing method according to the present invention involves polishing a polished object, the surface of which is made of diamond, by rubbing a polishing member having an elongated shape such as a linear or belt-like shape and containing at least a metal or a metal oxide against the diamond surface, wherein a pressing force of the polishing member is controlled in accordance with material properties of the polishing member and/or a shape of the polished object and a diamond crystal size in a rubbing section so that contact surface pressure in a machining area becomes uniform.
    Type: Application
    Filed: September 6, 2017
    Publication date: January 25, 2018
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Masahiro Shimamura, Kenichi Takao, Ryozo Shiroishi
  • Publication number: 20090165262
    Abstract: The present invention relates to a long article, such as belts or junction means of buckle members for wearing, such as bag articles including magazine pouches that are used by those who handle machine guns in terrorism incidents and fights, magazine belts or vests that become members for attaching the magazine pouches, or junction means of buckle members for attaching magazine pouches and the like. The object of the present invention is to provide various kinds of buckles which are made of engineering polymers, titanium and stainless steel plates and the like in order to meet requirements for the modernization of equipment, which are novel and strong and permit easy attachment, which are lightweight and easy to carry, and in which male and female members do not disengage from each other, and a junction device that can release the junction of the buckles in an emergency and as required.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Inventors: Masahiro Shimamura, Kazuo Saitoh
  • Patent number: 4806307
    Abstract: An aluminium alloy with superior thermal neutron absorptivity contains 0.2-30 wt. % of Gd. An aluminium alloy for an wrought material with high-temperature strength contains 0.2-20 wt. % of Gd and 0.5-6 wt. % of Mg. An aluminium alloy for casting contains 0.2-10 wt. % of Gd and 6-12 wt. % of Si.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: February 21, 1989
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yagoro Hirose, Yoshimitsu Miyagi, Kiko Hirose, Mitsuo Hino, Masayuki Harada, Takehiko Eto, Tetsunari Iida, Masahiro Shimamura