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:
Nov. 11, 2014
Filed:
Mar. 23, 2011
Yoshihiro Ohba, Tokyo, JP;
Mitsuru Kanda, Tokyo, JP;
Subir Das, Piscataway, NJ (US);
David Famolari, Piscataway, NJ (US);
Yoshihiro Ohba, Tokyo, JP;
Mitsuru Kanda, Tokyo, JP;
Subir Das, Piscataway, NJ (US);
David Famolari, Piscataway, NJ (US);
Kabushiki Kaisha Toshiba, Tokyo, JP;
Telcordia Technologies Inc., Piscataway, NJ (US);
Abstract
According to some embodiments, a key management apparatus for deploying in a smart grid system adapted to receive metering data from smart meters connected to at least one relay via a network, includes: a key control mechanism that derives a key array of individual purpose specific keys from one master key such that the purpose specific key in the key array are each independent cryptographic keys for each specific usage in an application or for each application if there is only one specific usage in an application.