Patents Assigned to Shinji Iijima
  • Method for filtering Bacillus subtilis
    Patent number: 4751007
    Abstract: A method comprising passing a culture solution including Bacillus subtilis or gene-recombinated Bacillus thereof through a pipe-like ceramic filter at a flow rate of 2 m/sec or less, the ceramic filter having a filter layer at an inner cylindrical surface thereof, the filter layer being made of spherical particles, and a surface roughness (Rmax) of the inner surface of the ceramic filter being 10 microns or less.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: June 14, 1988
    Assignees: Takeshi Kobayashi, Shinji Iijima, Toshiba Ceramics Co., Ltd.
    Inventors: Takeshi Kobayashi, Shinji Iijima, Toshiro Minami, Shunji Yasuda, Yoshihisa Katoh