Patents by Inventor Tomio Oyachi

Tomio Oyachi 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).

  • Porous ceramic structure and method of filtering aluminum
    Patent number: 4765833
    Abstract: A porous ceramic structure suitable for use as a filter for molten metal, in which a porous ceramic body having pores capable of passing a fluid therethrough is covered with a metal layer over the wall surface of the pores such that a fluid may flow through the pores while in contact with the metal layer. The filtering efficiency can be improved due to the increased wettability between the ceramic filter and the molten metal.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: August 23, 1988
    Assignee: Bridgestone Corporation
    Inventors: Tsuneaki Narumiya, Tomio Oyachi, Yasuhiro Iino
  • Wave absorber and method for making same
    Patent number: 4752525
    Abstract: A wave absorber comprising semiconductive ceramic short fibers having defined diameter, aspect ratio and volume resistivity dispersed in polymer materials. The dispersion is usually formed on a sheet or film base as a layer. A method for making the wave absorber is also described.
    Type: Grant
    Filed: November 20, 1986
    Date of Patent: June 21, 1988
    Assignee: Bridgestone Corporation
    Inventors: Tomio Oyachi, Hideo Tajima, Tatsuya Kanayama, Yasuhiro Ino, Minoru Ishiharada
  • Method for treating golf ball surface with glow discharge plasma and apparatus therefor
    Patent number: 4613403
    Abstract: Method for treating golf ball surface which is made of balta resin, thermoplastic elastomer, ionomer resin or the like to unpolymerizable gas plasma and then applying usual coating in an apparatus adapted to expose the all over surface of the ball to said plasma. Owing to this treatment, exfoliation of the ball coating can unexpectedly sufficiently be prevented.
    Type: Grant
    Filed: June 13, 1985
    Date of Patent: September 23, 1986
    Assignee: Bridgestone Corp.
    Inventors: Tomio Oyachi, Minoru Takahashi, Koichi Izuhara, Setsuo Akiyama, Masato Yoshikawa
  • Radio wave shielding materials and a method of producing the same
    Patent number: 4576859
    Abstract: A radio wave shielding material and a method of producing the same are disclosed. The radio wave shielding material comprises a plastic foamed body of three-dimensional network skeleton structure, a metal plating coat formed on the skeleton surface, and a coating of conductive rubber and/or plastic formed on the metal plating coat.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: March 18, 1986
    Assignee: Bridgestone Corporation
    Inventors: Tomio Oyachi, Hiroya Fukuda, Masahiko Anami