Patents Assigned to Tohoku Kinzoku Kogyo Kabushiki Kaisha
  • Method and device for magnetically transporting
    Patent number: 4395746
    Abstract: A method and device for magnetically transporting finely divided magnetic particles accumulated or deposited at a space. First a DC magnetic field is exerted to the finely divided magnetic particles so as to magnetize and bring them into an easy-to-be-handled state and then revolving alternating fields are exerted to the magnetized, finely divided magnetic particles, thereby magnetically transporting them.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: July 26, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Tohoku Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Hiroto Tanaka, Yasumasa Kohno, Hideyuki Tanaka, Kotaro Sasaki
  • Process for detecting a misfired explosive
    Patent number: 4063510
    Abstract: A process for indirectly detecting a misfired explosive (cartridge) which comprises charging a ferrite magnet as a tracer in an explosive charging portion together with an explosive in a blasting method and detecting the magnetic flux of said magnet charged in a misfired explosive cartridge at a site of explosion after blasting by a magnet measuring instrument, characterized by using as said tracer a ferrite magnet calcined at a temperature less than 1000.degree. C. and detecting this magnet by said magnetic detector.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: December 20, 1977
    Assignees: Taisei Kensetsu Kabushiki Kaisha, Tohoku Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yasuo Ishii, Naozumi Nishimura, Kohei Abe