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:
Jun. 14, 2005
Filed:
May. 29, 2001
Takahiro Tsukuda, Tokyo, JP;
Masatoshi Midorikawa, Tokyo, JP;
Mitsuo Yoshida, Tokyo, JP;
Toshihiro Shigematsu, Tokyo, JP;
Kazuchiyo Takaoka, Tokyo, JP;
Kenji Hyodo, Tokyo, JP;
Takahiro Tsukuda, Tokyo, JP;
Masatoshi Midorikawa, Tokyo, JP;
Mitsuo Yoshida, Tokyo, JP;
Toshihiro Shigematsu, Tokyo, JP;
Kazuchiyo Takaoka, Tokyo, JP;
Kenji Hyodo, Tokyo, JP;
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
The present invention provide a separator for an electrochemical device which comprises a wet nonwoven fabric comprising one or more kinds of fibrillated organic fibers which are at least partially fibrillated into a fiber diameter of 1 μm or less, and one or more kinds of unfibrillated organic fibers having a fineness of 0.5 dtex or less, which exhibits excellent heat resistance, electrolyte holding properties, internal short-circuit preventing property, and winding property, which results in a lowered internal resistance and prolonged life of an electrochemical device, and a method for producing the same and an electrochemical device.