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. 04, 2012
Filed:
Mar. 19, 2008
Applicants:
Yasunori Nishida, Tsukuba, JP;
Yasuo Shinohara, Tsuchiura, JP;
Hiroyuki Sato, Niihama, JP;
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/0583 (2010.01); H01M 10/0587 (2010.01); H01M 2/14 (2006.01); H01M 2/16 (2006.01); B32B 5/22 (2006.01); C08J 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a porous film comprising a heat-resistant resin and two or more fillers, wherein a value of D/Dis 0.15 or less where among values each obtained by measuring the average particle diameter of particles that constitute one of the two or more fillers, the largest value is let be Dand the second largest value is let be D.