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:
Dec. 06, 2005
Filed:
Feb. 01, 2001
Takaaki Maekawa, Ibaraki, JP;
Zhen Ya Zhang, Ibaraki, JP;
Takaaki Maekawa, Ibaraki, JP;
Zhen Ya Zhang, Ibaraki, JP;
Japan Science and Technology Corporation, Saitama, JP;
Abstract
Mesophilic methane bacteria obtained from digested sludge are acclimatized in an H/COmedium and the acclimatized methane bacteria are grown on a support inclusive of inorganic nutritional salts of trace metal elements by using an immobilized bed bioreactor. The grown bacteria are allowed to metabolize a mixed gas, prepared by adding hydrogen to at least one of coal gas and biogas, into methane and at the same time, cobalamin contained in the fermented liquor is recovered as an extracellular product in the form of cyanocobalamin by using potassium cyanide to thereby produce vitamin Befficiently in a high content and high yield.