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. 16, 2014
Filed:
Dec. 12, 2012
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Perry G G Caimi, Kennett Square, PA (US);
Min Qi, Hockessin, DE (US);
Luan Tao, Wallingford, PA (US);
Paul V Viitanen, West Chester, PA (US);
Jianjun Yang, Hockessin, DE (US);
E I Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The endogenous pnp gene encoding polynucleotide phosphorylase in thegenome was identified as a target for modification to provide improved xylose utilizing cells for ethanol production. The cells are in addition genetically modified to have increased expression of ribose-5-phosphate isomerase (RPI) activity, as compared to cells without this genetic modification, and are not limited in xylose isomerase activity in the absence of the pnp modification.