Patents by Inventor Narimasa Maida

Narimasa Maida 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: 20060172099
    Abstract: The present invention intends to provide a metal plate coated with polyester resin which does not generate cracks and fractures and is excellent in moldability and corrosion resistance when being applied by a severe molding processing, and to provide a can using the same which is excellent in preservation of flavoring properties for content. For this purpose, the metal plate, which the surface roughness Ra (JIS B 0601) is 1 ?m or less, coated with polyester resin of the present invention is coated on at least one side thereof with a monolayer polyester resin or a two-layer polyester resin; the monolayer polyester resin or the two-layer polyester resin which has an intrinsic viscosity of 0.6 to 1.
    Type: Application
    Filed: April 25, 2005
    Publication date: August 3, 2006
    Applicant: Toyo Kohan Co. Ltd.
    Inventors: Lianchun Hu, Narimasa Maida, Satoshi Takahashi, Hiroshi Kurisu
  • Publication number: 20060172100
    Abstract: The present invention intends to provide a metal plate coated with polyester resin which does not generate cracks and fractures and is excellent in moldability and corrosion resistance when being applied by a severe molding processing, and to provide a can using the same which is excellent in preservation of flavoring properties for content. For this purpose, the metal plate, which the surface roughness Ra (JIS B 0601) is 1 ?m or less, coated with polyester resin of the present invention employs a polyester resin having an intrinsic viscosity of 0.6 to 1.4 and being non-oriented.
    Type: Application
    Filed: April 25, 2005
    Publication date: August 3, 2006
    Applicant: Toyo Kohan Co. Ltd.
    Inventors: Lianchun Hu, Narimasa Maida, Satoshi Takahashi, Hiroshi Kurisu
  • Publication number: 20050238845
    Abstract: It is intended to provide a metal can from which the contents packed therein are easy to take out and which has been coated with a polyester resin film for food or with a film for food which is made of a resin consisting mainly of a polyester resin; a metal sheet which has been coated with a surface-roughened resin film and is for use in the metal can; a surface-roughened resin film for use in the metal sheet; and processes for producing these. The surface-roughened resin film is one which comprises a polyester resin and, incorporated therein, either inorganic particles or a resin incompatible with the polyester resin, e.g., a polyolefin resin, to thereby have a roughened surface. Alternatively, the surface-roughened resin film is one obtained by embossing a surface of a resin film. The surface-roughened resin film is laminated to a metal sheet. Alternatively, a resin film which has not undergone surface roughening is laminated to a metal sheet and this resin film-coated metal sheet is embossed.
    Type: Application
    Filed: July 3, 2003
    Publication date: October 27, 2005
    Applicant: Tokyo Kohan Co. Ltd.
    Inventors: Hitoshi Kuroda, Lianchun Hu, Narimasa Maida
  • Publication number: 20050100749
    Abstract: A thermoplastic-resin-coated metal sheet in which the thermoplastic resin has been applied to the metal sheet without through an adhesive primer and which, even after having been formed into a can, is excellent in impact resistance at low temperatures and resistance to corrosion by acid contents; and a can obtained from the coated metal sheet. The thermoplastic-resin-coated metal sheet is obtained by coating a metal sheet with a thermoplastic resin composition comprising a blend of a polyester resin with a polyolefin resin or polyolefin elastomer. This metal sheet is formed into a can through drawing/ironing with thickness reduction.
    Type: Application
    Filed: March 10, 2002
    Publication date: May 12, 2005
    Inventors: Lianchun Hu, Satoshi Kawamura, Narimasa Maida, Hitoshi Kuroda
  • Patent number: 6645559
    Abstract: The present invention provides a method for trimming a resin film which can recycle lug portions of the resin film after trimming, can easily trim the resin film even when the resin film is made of resin which becomes fragile by cooling, and enhance the use efficiency of a laminated sheet by making resin coated portions disposed at both sides of the laminated sheet thin. At the time of coating molten resin at least on one surface of a substrate to form a resin film after making the molten resin pass between coating rolls, the lug portions of the resin film are trimmed before the lug portions of the resin film are cooled.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: November 11, 2003
    Assignees: Toyo Kohan Co., Ltd., Toyo Seikan Kaisha, Ltd.
    Inventors: Akira Kobayashi, Kouji Yamada, Yuji Funagi, Narimasa Maida, Hiroshi Inazawa, Takuji Nakamura, Noriaki Kaguma
  • Publication number: 20030143336
    Abstract: The present invention provides a method for trimming a resin film which can recycle lug portions of the resin film after trimming, can easily trim the resin film even when the resin film is made of resin which becomes fragile by cooling, and enhance the use efficiency of a laminated sheet by making resin coated portions disposed at both sides of the laminated sheet thin. At the time of coating molten resin at least on one surface of a substrate to form a resin film after making the molten resin pass between coating rolls, the lug portions of the resin film are trimmed before the lug portions of the resin film are cooled.
    Type: Application
    Filed: January 29, 2002
    Publication date: July 31, 2003
    Applicant: TOYO SEIKAN KAISHA, LTD.
    Inventors: Akira Kobayashi, Kouji Yamada, Yuji Funagi, Narimasa Maida, Hiroshi Inazawa, Takuji Nakamura, Noriaki Kaguma