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.:

US 7335739 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 26, 2008

Filed:

Apr. 29, 2003
Applicants:

Charlene Mello, Rochester, MA (US);

Steven Arcidiacono, Bellingham, MA (US);

Michelle M. Butler, Auburn, MA (US);

Inventors:

Charlene Mello, Rochester, MA (US);

Steven Arcidiacono, Bellingham, MA (US);

Michelle M. Butler, Auburn, MA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 38/17 (2006.01); C07K 1/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

Methods are described for the purification and spinning of recombinant and non-recombinant proteins. Specifically, the lysis of bacteria and purification of silk proteins occur in a single solution of organic acid. Bacterial proteins are hydrolyzed while the silk protein remains intact. Silk proteins remain soluble as they are concentrated into a aqueous-based mixture for fiber spinning.


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