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. 01, 2016
Filed:
Mar. 13, 2013
Masashi Oshima, Yokohama, JP;
Kuniaki Arai, Tokyo, JP;
Junichi Kanno, Yokohama, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
Provided is a protective semiconductor device detecting a disconnection reliably with secondary cells including for each cell: cell-connecting terminals; a first resistance detecting the voltage of each cell; a comparator detecting whether or not the voltage of each cell is in the reference voltage range; a series circuit composed of a second resistance and a first switch element, and including a control circuit controlling ON/OFF of the switch element, wherein the first switch element connects the second resistance to the connecting terminals by turning ON, while disconnecting it by turning OFF, the control circuit maintains a disconnection test signal ON, while turning ON the plurality of first switch elements sequentially and detecting the disconnection between the cells and the connecting terminals based on the output signal from the comparator corresponding to the first switch element turned ON.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile