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:
Apr. 18, 2006
Filed:
Dec. 26, 2000
Seiichiro Tamai, Osaka, JP;
Shinichi Michisaka, Takatsuki, JP;
Seiichiro Tamai, Osaka, JP;
Shinichi Michisaka, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
To provide a contactless IC tag for storing secret information for each of multiple stages of a life cycle from manufacture to disposal, and an access device for reading/writing information in secrecy from/to the contactless IC tag for each stage. A memory unit has stage storage areas as many as the stages. Each stage storage area is identified by a secret stage identifier. A controlling unit receives an access identifier from the access device in secrecy, via an antenna unit, a demodulating unit, and an instruction decoding unit. Upon judging that the access identifier properly identifies one of the stage storage areas, the controlling unit receives access information from the access device, and an inputting/outputting unit accesses the stage storage area based on the access information.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile