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:
Jul. 03, 2007
Filed:
Dec. 12, 2001
Hidetoshi Ishikawa, Yokohama, JP;
Yukio Yamauchi, Yokohama, JP;
Kanehiro Imai, Yokosuka, JP;
Akihiro Higashi, Yokosuka, JP;
Hidetoshi Ishikawa, Yokohama, JP;
Yukio Yamauchi, Yokohama, JP;
Kanehiro Imai, Yokosuka, JP;
Akihiro Higashi, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
Information stored in an IC card which can be set to a block state, where any functions permitted to a user authority holder is not effective and an unblock password is required to set the IC card back to an initial state, is more secured than that stored in an IC card without the block state. The IC card of the present invention is further provided with a counter counting the number of incorrect unblock passwords, and is set to a more secured state of operation where only administrative authority holder can release the IC card.