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:
Aug. 18, 2009
Filed:
Jan. 10, 2005
Applicants:
John Rudiger Benemann, Walnut Creek, CA (US);
Don Churchill Augenstein, Palo Alto, CA (US);
Inventors:
John Rudiger Benemann, Walnut Creek, CA (US);
Don Churchill Augenstein, Palo Alto, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P 5/02 (2006.01); C12P 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides a process for producing hydrogen and methane gases by microbial fermentation. The process involves a first reactor in which a fermentation produces hydrogen and a liquid effluent. The liquid effluent is fermented in a second reactor to produce methane. The ratio of hydrogen to methane produced is adjusted by adjusting the liquid volume of the first reactor.