Patents by Inventor Akimitsu Bamba

Akimitsu Bamba 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: 9656482
    Abstract: The present invention relates to a polyimide resin surface modifier which modifies the surface of a polyimide resin to permit easy absorption of metal ions, and a surface-modifying method for polyimide resins using the same. The surface modifier contains an alkali component, an organic solvent having hydroxy groups and a boiling point of 120° C. or higher, and a water content of 0-10% by weight. The surface-modifying method includes a printing process wherein a predetermined pattern is printed on the surface of a polyimide resin substrate using the polyimide resin surface modifier, an organic solvent-removing process wherein an organic solvent in the polyimide resin surface modifier pattern-printed on the surface of said polyimide resin substrate is removed and a water-treatment process wherein said polyimide resin surface modifier after removing the organic solvent is brought into contact with water.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 23, 2017
    Assignee: SEIREN CO., LTD.
    Inventors: Akimitsu Bamba, Takuya Arita, Hiroyuki Hayashi, Kouichi Kugimiya
  • Patent number: 9578751
    Abstract: The purpose of the present invention is to provide a method for using a metal ion solution of low concentration to efficiently form a metal film pattern of excellent accuracy and reliable adhesion on a resin substrate. A resin substrate having a metal film pattern formed thereon is produced by a method that includes the following steps (a) to (e): (a) a step for pattern-printing of a latent image agent (2) onto the surface of a resin substrate (1) ; (b) a step for bringing the area imprinted with the latent image agent (2) into contact with a solution containing metal ions, and forming a metal salt (3); (c) a step for bringing the metal salt (3) into contact with an acidic treatment liquid containing a reducing agent, and reducing the metal salt; (d) a step for forming an electroless nickel plating film (5) on the area imprinted with the latent image agent; and (e) a step for precipitating an electroless copper plating (6) onto the surface of the nickel plating film (5).
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: February 21, 2017
    Assignee: SEIREN CO., LTD.
    Inventors: Akimitsu Bamba, Kazuhisa Tsujimoto, Hideyuki Yamada, Kouichi Kugimiya
  • Publication number: 20160159112
    Abstract: The present invention relates to a polyimide resin surface modifier which modifies the surface of a polyimide resin to permit easy absorption of metal ions, and a surface-modifying method for polyimide resins using the same. The surface modifier contains an alkali component, an organic solvent having hydroxy groups and a boiling point of 120° C. or higher, and a water content of 0-10% by weight. The surface-modifying method includes a printing process wherein a predetermined pattern is printed on the surface of a polyimide resin substrate using the polyimide resin surface modifier, an organic solvent-removing process wherein an organic solvent in the polyimide resin surface modifier pattern-printed on the surface of said polyimide resin substrate is removed and a water-treatment process wherein said polyimide resin surface modifier after removing the organic solvent is brought into contact with water.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Inventors: Akimitsu BAMBA, Takuya ARITA, Hiroyuki HAYASHI, Kouichi KUGIMIYA
  • Publication number: 20140227446
    Abstract: The present invention relates to a polyimide resin surface modifier which modifies the surface of a polyimide resin to permit easy absorption of metal ions, and a surface-modifying method for polyimide resins using the same. The surface modifier contains an alkali component, an organic solvent having hydroxy groups and a boiling point of 120° C. or higher, and a water content of 0-10% by weight. The surface-modifying method includes a printing process wherein a predetermined pattern is printed on the surface of a polyimide resin substrate using the polyimide resin surface modifier, an organic solvent-removing process wherein an organic solvent in the polyimide resin surface modifier pattern-printed on the surface of said polyimide resin substrate is removed and a water-treatment process wherein said polyimide resin surface modifier after removing the organic solvent is brought into contact with water.
    Type: Application
    Filed: February 10, 2014
    Publication date: August 14, 2014
    Applicant: SEIREN CO., LTD.
    Inventors: Akimitsu BAMBA, Takuya ARITA, Hiroyuki HAYASHI, Kouichi KUGIMIYA
  • Publication number: 20140178571
    Abstract: The purpose of the present invention is to provide a method for using a metal ion solution of low concentration to efficiently form a metal film pattern of excellent accuracy and reliable adhesion on a resin substrate. A resin substrate having a metal film pattern formed thereon is produced by a method that includes the following steps (a) to (e): (a) a step for pattern-printing of a latent image agent (2) onto the surface of a resin substrate (1) ; (b) a step for bringing the area imprinted with the latent image agent (2) into contact with a solution containing metal ions, and forming a metal salt (3); (c) a step for bringing the metal salt (3) into contact with an acidic treatment liquid containing a reducing agent, and reducing the metal salt; (d) a step for forming an electroless nickel plating film (5) on the area imprinted with the latent image agent; and (e) a step for precipitating an electroless copper plating (6) onto the surface of the nickel plating film (5).
    Type: Application
    Filed: May 17, 2012
    Publication date: June 26, 2014
    Inventors: Akimitsu Bamba, Kazuhisa Tsujimoto, Hideyuki Yamada, Kouichi Kugimiya