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, 2012
Filed:
Mar. 03, 2010
Applicants:
Makoto Oka, Chiba, JP;
Yoshihito Ishibashi, Tokyo, JP;
Shinako Matsuyama, Tokyo, JP;
Hideaki Watanabe, Tokyo, JP;
Inventors:
Makoto Oka, Chiba, JP;
Yoshihito Ishibashi, Tokyo, JP;
Shinako Matsuyama, Tokyo, JP;
Hideaki Watanabe, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); G06F 7/04 (2006.01); G06F 12/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A public key certificate issuing system is disclosed which comprises a certificate authority for issuing a public key certificate for an entity, the certificate authority including a plurality of signature modules each executing a different encryption algorithm and a registration authority that receives a public key certificate issuance request from the entity.