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:
Aug. 05, 2008
Filed:
Feb. 19, 2002
Yoko Kumagai, Kawasaki, JP;
Takahiro Fujishiro, Yokohama, JP;
Satoru Tezuka, Yokohama, JP;
Takanobu Oikawa, Funabashi, JP;
Izumi Anayama, Fujisawa, JP;
Yoko Kumagai, Kawasaki, JP;
Takahiro Fujishiro, Yokohama, JP;
Satoru Tezuka, Yokohama, JP;
Takanobu Oikawa, Funabashi, JP;
Izumi Anayama, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A public key certificate generation method includes the steps of: sending a certificate issuing request including a registration contents of a public key certificate and an information content guaranteed by the registration authority, to the issuing authority in a registration authority and generating a public key certificate including the registration contents described in the certificate issuing request the information guaranteed by the registration authority issuing contents issued by the issuing authority, and a signature to the issuing contents in the issuing authority.