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. 06, 2000
Filed:
Dec. 16, 1997
Manabu Suhara, Yokohama, JP;
Kazuya Hiratsuka, Yokohama, JP;
Takeshi Kawasato, Yokohama, JP;
Manabu Tsushima, Yokohama, JP;
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
An electric double layer capacitor used as a unit capacitor for forming an assembled cell type power source device by connecting a plurality of capacitor elements in series, wherein each of the capacitor elements is formed by impregnating an electrolyte in at least one pair of polarization electrode sheets between which a separator is inserted, wherein a protective circuit in which a Zener diode each having an operation resistance of 10-150 .OMEGA. at the average operation voltage of the electric double layer capacitor are connected in parallel to each of the electric double layer capacitors.