Methods and systems for biomass conversion to carboxylic...

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound

Reexamination Certificate

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C435S134000

Reexamination Certificate

active

07820417

ABSTRACT:
The disclosure includes a method, process and apparatus for the conversion of biomass to carboxylic acids and/or primary alcohols. The system may include a pretreatment/fermentation subsystem operable to produce a fermentation broth containing carboxylic acid salts from biomass, such as lignocellulosic biomass. The system may also include a dewatering subsystem operable to remove excess water from the fermentation broth to produce a concentrated product. The system may also includes an acid springing subsystem operable to produce a mixed carboxylic acid product. The system may also include a hydrogenation subsystem operable to produce an alcohol mixture, such as a mixture containing primary alcohols. Methods of operating this system or other systems to obtain a carboxylic acid or alcohol mixture are also provided.

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International PCT Search Report with Written Opinion, PCT/US2005/021337, 12 pages, mailed Jul. 11, 2006.
The First Office Action (PCT Application in the National Phase) from The Patent Office of the State Intellectual Property Office of the People's Republic of China, Application No. 2005-80019714.6, dispatch dated Aug. 14, 2009 and received Sep. 7, 2009, includes English translation of the Text of the First Office Action, 6 pages.

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