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:
Nov. 30, 2010
Filed:
Mar. 28, 2007
Applicants:
Ilyess H. Romdhane, Woodbury, MN (US);
Scott L. Ciliske, Saint Paul, MN (US);
Inventors:
Ilyess H. Romdhane, Woodbury, MN (US);
Scott L. Ciliske, Saint Paul, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 47/12 (2006.01); B01D 39/14 (2006.01); B01D 39/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for forming a microporous membrane having a microstructure is described. Dope and coagulant formulations are simultaneously cast, where the coagulant formulation diffuses into the dope formulation through an interface effecting a phase inversion forming a microstructure.