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. 12, 2026
Filed:
Mar. 09, 2021
Fdk Corporation, Tokyo, JP;
Masaru Takasu, Tokyo, JP;
FDK CORPORATION, Tokyo, JP;
Abstract
An alkaline storage battery of the present invention includes: an electrode group that includes a positive electrode, a negative electrode, and a separator located between the positive electrode and the negative electrode, which are stacked on top of each other; an outer can that is bottomed cylindrical shape having an opening at the top; a sealing body that seals the outer can; and a positive terminal electrically connected to the sealing body. The positive electrode includes a positive electrode body and a positive electrode protrusion protruding from a portion of the positive electrode body toward the sealing body to connect electrically to the sealing body. The negative electrode includes a negative electrode body and a negative electrode protrusion protruding from a portion of the negative electrode body toward the sealing body and terminating between the sealing body and the negative electrode body. The positive electrode and the negative electrode have a positive electrode active material and a negative electrode active material, respectively, in portions facing each other with the separator therebetween.