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. 26, 1994
Filed:
Jun. 18, 1993
Mitsutoshi Tanaka, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A nonaqueous battery having a positive electrode made of an active material of light metal or its alloy or an active material capable of intercalating/deintercalating lithium ion, and a nonaqueous electrolyte, in which the battery is sealed with a sealant containing a pitch and at least one montmorillonite group material. In a preferred embodiment, the amount of the montmorillonite group material is in the range of 2 to 30% by weight based on the total weight of the sealant minus solvents. The pitch may be a blown asphalt and the at least one montmorillonite group material may be a tri-octahedron type montmorillonite group material comprising a quaternary ammonium intercalated between layers. Alternatively, the pitch may be blown asphalt having a penetration (25.degree. C.) of 10 to 20 and the at least one montmorillonite group material may be a hectolite comprising a quaternary ammonium intercalated between layers.