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:
Jun. 17, 2025
Filed:
Oct. 20, 2022
Nec Solution Innovators, Ltd., Tokyo, JP;
Kunihiro Ishida, Tokyo, JP;
Tatsunori Yamagami, Tokyo, JP;
NEC Solution Innovators, Ltd., Tokyo, JP;
Abstract
A local timestamp issuing apparatus according to the present invention includes: a timestamp issuing unit configured to, in response to a request for a timestamp for electronic data by a predetermined information processing apparatus installed in the same local environment, issue a timestamp token for the electronic data; a ledger timestamp requesting unit configured to, at a preset timing, connect to a specific timestamp issuing apparatus installed on the Internet, and request a timestamp for ledger data including the timestamp token issued for the electronic data from the specific timestamp issuing apparatus; and a ledger timestamp acquiring unit configured to acquire the timestamp token issued for the ledger data from the specific timestamp issuing apparatus.