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:
Mar. 07, 2017
Filed:
Feb. 16, 2007
Hideki Sawai, Kanagawa, JP;
Katsushige Yamada, Kanagawa, JP;
Takashi Mimitsuka, Kanagawa, JP;
Kenji Sawai, Kanagawa, JP;
Tetsu Yonehara, Kanagawa, JP;
Yohito Ito, Kanagawa, JP;
Masahiro Henmi, Shiga, JP;
Hideki Sawai, Kanagawa, JP;
Katsushige Yamada, Kanagawa, JP;
Takashi Mimitsuka, Kanagawa, JP;
Kenji Sawai, Kanagawa, JP;
Tetsu Yonehara, Kanagawa, JP;
Yohito Ito, Kanagawa, JP;
Masahiro Henmi, Shiga, JP;
Toray Industries, Inc., , JP;
Abstract
The invention provides a method of producing a chemical product through continuous fermentation which includes filtering a culture of a microorganism or cultured cells with a separation membrane to recover a product from a filtrate and simultaneously retaining a nonfiltered fluid in, or refluxing it to, the culture, and adding fermentation materials to the culture, wherein a porous membrane having an average pore size of 0.01 μm or more to less than 1 μm is used as the separation membrane and the filtration is conducted with a transmembrane pressure difference in the range of 0.1 to 20 kPa. According to this method, the fermentation productivity of the chemical product can be largely elevated at high stability and a low cost.