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:
Mar. 31, 2009
Filed:
Apr. 01, 2004
Kouki Hatsuda, Tochigi, JP;
Yasuhiro Fujita, Tochigi, JP;
Hironobu Moriyama, Tochigi, JP;
Mamiko Nomura, Tochigi, JP;
Kouki Hatsuda, Tochigi, JP;
Yasuhiro Fujita, Tochigi, JP;
Hironobu Moriyama, Tochigi, JP;
Mamiko Nomura, Tochigi, JP;
Sony Corporation, Tokyo, JP;
Sony Chemical & Information Device Corporation, Tokyo, JP;
Abstract
A liquid absorbing sheet has a liquid-absorbing resin layer that can effectively absorb the nonaqueous electrolyte solution used in nonaqueous electrolyte secondary cells that make nonaqueous electrolyte battery packs (in particular, lithium ion-based nonaqueous secondary battery packs). The liquid-absorbing resin layer is obtained by irradiating a particular monomer composition with UV rays or other energy rays to polymerize the monomer composition. The monomer composition contains a monofunctional monomer component (A) having a polyethylene glycol acrylate monomer and an amide bond-containing acrylic monomer; and a polyfunctional monomer component (B).