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. 24, 2009
Filed:
Nov. 07, 2005
Device and method for managing public key certificate attached to electronic mail and storage medium
Makoto Takada, Ebina, JP;
Takanori Masui, Ebina, JP;
Masato Sugii, Kawasaki, JP;
Nobumi Kusano, Ebina, JP;
Makoto Takada, Ebina, JP;
Takanori Masui, Ebina, JP;
Masato Sugii, Kawasaki, JP;
Nobumi Kusano, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A certificate managing device has a verifying section that verifies validity of a first public key certificate corresponding to a originating mail address when an electronic mail to which the first public key certificate is attached is received, a comparing section that compares newness of the first public key certificate with newness of a second public key certificate which is already registered as a public key certificate corresponding to the originating mail address, and a registering section that registers the first public key certificate as the public key certificate corresponding to the originating mail address in place of the second public key certificate when the first public key certificate is more recent than the second public key certificate.