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:
Apr. 10, 2012
Filed:
Aug. 28, 2009
Applicant:
Hirohisa Hokazono, Kanagawa, JP;
Inventor:
Hirohisa Hokazono, Kanagawa, JP;
Assignee:
Fujifilm Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/00 (2006.01); B01D 29/07 (2006.01); B29C 49/08 (2006.01); D02J 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a crystalline polymer microporous membrane including: a microstructure on the side of one surface of the membrane, the microstructure being composed of series of nodules interconnected with one another by fibrils, wherein the average pore diameter at the one surface of the membrane is larger than the average pore diameter at another surface of the membrane, and the average pore diameter continuously changes from the one surface toward the other surface, and wherein the nodules have an aspect ratio (length/width) of 25 or greater.