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:
May. 22, 2001
Filed:
Sep. 23, 1997
Applicant:
Inventors:
Yasuko Hoshina, Hirakata, JP;
Miho Okamoto, Sakai, JP;
Noboru Ito, Toyohashi, JP;
Munehisa Ikoma, Toyohashi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 ;
U.S. Cl.
CPC ...
H01M 2/16 ;
Abstract
The present invention employs non-woven fabrics of an olefin resin comprising first filaments having diameters in a range of 3 to 10 &mgr;m as a main component and second filaments having diameters in a range of 20 to 40 &mgr;m contained at {fraction (1/200)} to {fraction (1/10)} of the whole filaments, as separators for separating positive electrodes from negative electrodes. The first filaments are formed by splitting the second filaments.