Patents by Inventor Namieki Oosawa

Namieki Oosawa 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).

  • Process for producing metallic gasket
    Patent number: 8117749
    Abstract: A process for producing a metallic gasket, which comprises making a thin metallic sheet into a solid figure having an inclined surface, thereby providing a bead region extended upwardly and downwardly over the inclined surface, and forming a sealing part made of a hardened rubber layer on the surface of bead region, characterized by forming a sealing part extended from the apex of the bead region down to an upperward position on the inclined surface, and another sealing part extended from a downward position on the inclined surface down to the flat bottom part, and joining the sealing parts by the rubber material in a solution state extended along the inclined surface from both of the sealing parts, before drying and hardening of the material for making sealing parts. Application of the rubber material in a solution state is carried out preferably by a screen printing process.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: February 21, 2012
    Assignees: NOK Corporation, Ishino Gasket Mfg., Co., Ltd.
    Inventors: Hiroyuki Nikamoto, Naoki Matsumoto, Toshihiro Higashira, Namieki Oosawa, Tomonori Funatsu
  • Process for Producing Metallic Gasket
    Publication number: 20090229106
    Abstract: A process for producing a metallic gasket, which comprises making a thin metallic sheet into a solid figure having an inclined surface, thereby providing a bead region extended upwardly and downwardly over the inclined surface, and forming a sealing part made of a hardened rubber layer on the surface of bead region, characterized by forming a sealing part extended from the apex of the bead region down to an upperward position on the inclined surface, and another sealing part extended from a downward position on the inclined surface down to the flat bottom part, and joining the sealing parts by the rubber material in a solution state extended along the inclined surface from both of the sealing parts, before drying and hardening of the material for making sealing parts. Application of the rubber material in a solution state is carried out preferably by a screen printing process.
    Type: Application
    Filed: July 19, 2006
    Publication date: September 17, 2009
    Inventors: Hiroyuki Nikamoto, Naoki Matsumoto, Toshihiro Higashira, Namieki Oosawa, Tomonori Funatsu