Patents by Inventor Masaharu Rokujo

Masaharu Rokujo 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).

  • Non-permeable carbonaceous formed bodies and method for producing same
    Patent number: 4582632
    Abstract: Non-permeable carbonized formed bodies consisting of carbonaceous material containing 5-50 wt % of graphite and the balance of glassy carbon formed by bake-carbonization of a thermosetting resin, and a method for producing such non-permeable carbonized formed bodies comprising mixing and kneading a thermosetting resin powder, thermosetting resin liquid and graphite powder, drying, hardening and bake-carbonizing the resultant body is disclosed.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: April 15, 1986
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Masaharu Rokujo, Hisaaki Yokota, Eiji Saura, Mitsunobu Nikaido, Morihiko Sugino
  • Process for narrow gap welding of aluminum alloy thick plates
    Patent number: 4019018
    Abstract: The narrow gap butt welding of aluminum and aluminum alloy plates of a thickness more than 20 mm with a non-consumable electrode is conducted by inserting a filling material into a welding groove, applying a direct current of more than 300 A between said non-consumable electrode which does not have a sharp end and said plates to be welded with straight polarity, maintaining an arc length from 0.5 to 5 mm and shielding the welding groove area with a shielding gas comprising at least 50% helium.
    Type: Grant
    Filed: January 29, 1975
    Date of Patent: April 19, 1977
    Assignee: Kobe Steel Ltd.
    Inventors: Minoru Oishi, Masaharu Rokujo, Hisaaki Yokota, Naoki Okuda, Makoto Tomita, Toshihiko Endo