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. 01, 2010
Filed:
Jul. 31, 2006
Koichi Yano, Kanagawa, JP;
Akihiko Fujiwara, Tokyo, JP;
Koichi Yano, Kanagawa, JP;
Akihiko Fujiwara, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A semiconductor device for protecting a rechargeable cell at least from excessive discharge current due to over discharge of the rechargeable cell, includes (a) a first excessive discharge current detection circuit configured to detect first excess of a voltage at an electric current detection terminal exceeding a first voltage level (Vs), (b) a second excessive discharge current detection circuit configured to detect second excess of the absolute voltage at the electric current detection terminal exceeding a second voltage level (Vs) higher than the first voltage level, (c) a delay circuit configured to cause each of the first and second excessive discharge current detection circuits to delay output by a predetermined delay time, and (d) a delay reducing circuit configured to produce a delay time reducing signal for reducing the delay time at a predetermined ratio.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile