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:
Sep. 24, 2013
Filed:
Aug. 03, 2007
Applicant:
Xingen Lei, Ithaca, NY (US);
Inventor:
Xingen Lei, Ithaca, NY (US);
Assignee:
Cornell Research Foundation, Inc., Ithaca, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C12N 9/16 (2006.01); A23J 3/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides variant phytase enzymes having increased thermal stability relative to their counterpart parent enzymes. The modifications to the enzymes include both single substitutions and various combinations of substitutions that provide improved stability and activity. The invention further provides nucleic acids encoding the variant phytase enzymes, host cells and vectors containing and expressing them, as well as feed compositions useful for providing improved nutrition, particularly with respect to the bioavailability of dietary phosphate, calcium, iron and zinc, among others.