The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 1988
Filed:
Sep. 08, 1987
Applicant:
Inventors:
Takeshi Kobayashi, Chikusa-ku, Nagoya-shi, Aichi-ken, JP;
Shinji Iijima, Chikusa-ku, Nagoya-shi, Aichi-ken, JP;
Toshiro Minami, Nagoya, JP;
Shunji Yasuda, Funabashi, JP;
Yoshihisa Katoh, Toyota, JP;
Assignees:
Other;
Toshiba Ceramics Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210791 ; 210767 ; 210779 ; 210805 ; 435261 ; 435803 ;
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.