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. 26, 2006
Filed:
Sep. 29, 2005
Applicant:
Robert D. Van Reis, Redwood City, CA (US);
Inventor:
Robert D. van Reis, Redwood City, CA (US);
Assignee:
Genentech, Inc., South San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/00 (2006.01); B01D 39/14 (2006.01); B01D 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to charged filtration membranes and their use for separation of a protein from solvent, low molecular weight solutes or a mixture of proteins. Modification of the membranes to generate charge includes modification of membrane pores to alter charge within a pore and alter the size of a pore. Consequently, the protein is separated from other solutes in a mixture based on size as well as net protein charge and membrane charge.