Patents by Inventor Isao NAGANUMA

Isao NAGANUMA 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).

  • Preventing progression of corrosion in steel pipe structure
    Patent number: 10247349
    Abstract: In a configuration of a method for preventing progression of corrosion in a steel pipe structure according to the present invention, two or more types of liquids 150 are injected, while being mixed, into a steel pipe that constitutes the steel pipe structure, from an opening at one of both ends of the steel pipe, and the inside of the steel pipe is filled with resin foam product (foam product 152) by foam expansion and hardening of the two or more types of liquids.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: April 2, 2019
    Assignee: Nitto Chemical Co., Ltd.
    Inventors: Kazuhiro Takaishi, Takehiro Miyazawa, Yoshio Tamura, Takuhiko Ohashi, Masashi Suematsu, Osamu Hatsumi, Tadashi Kimura, Makoto Ide, Isao Naganuma, Marco Volpato, Maurizio Corti, Tetsuya Matayoshi, Kouei Miyazato, Shinichi Suzuki, Nobuo Okamura, Kozo Hatsumi, Hiromi Hasegawa
  • PREVENTING PROGRESSION OF CORROSION IN STEEL PIPE STRUCTURE
    Publication number: 20160319981
    Abstract: In a configuration of a method for preventing progression of corrosion in a steel pipe structure according to the present invention, two or more types of liquids 150 are injected, while being mixed, into a steel pipe that constitutes the steel pipe structure, from an opening at one of both ends of the steel pipe, and the inside of the steel pipe is filled with resin foam product (foam product 152) by foam expansion and hardening of the two or more types of liquids.
    Type: Application
    Filed: July 11, 2016
    Publication date: November 3, 2016
    Inventors: Kazuhiro TAKAISHI, Takehiro MIYAZAWA, Yoshio TAMURA, Takuhiko OHASHI, Masashi SUEMATSU, Osamu HATSUMI, Tadashi KIMURA, Makoto IDE, Isao NAGANUMA, Marco VOLPATO, Maurizio CORTI, Tetsuya MATAYOSHI, Kouei MIYAZATO, Shinichi SUZUKI, Nobuo OKAMURA, Kozo HATSUMI, Hiromi HASEGAWA