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:
Apr. 14, 2026
Filed:
Apr. 02, 2024
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Scalar, Inc., Tokyo, JP;
Kazuya Kumazawa, Nagoya, JP;
Naoki Yamamuro, Nagoya, JP;
Yohei Nakanishi, Nagoya, JP;
Shigeki Matsumoto, Nagoya, JP;
Takaya Uchino, Nisshin, JP;
Wataru Fukatsu, Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
SCALAR, INC., Tokyo, JP;
Abstract
A client server includes: a storage that stores a distributed ledger; and a processor that performs a plurality of verification processes for one or more files and one or more confirmation times. In the distributed ledger, one or more file hash values and one or more time stamp tokens are stored in time series. The plurality of verification processes include a file verification process, a confirmation time verification process, and a sequence verification process. The file verification process is a process of verifying whether or not the one or more files have been tampered with. The confirmation time verification process is a process of verifying whether or not the one or more confirmation times have been tampered with. The sequence verification process is a process of verifying a sequence of the one or more files and the one or more confirmation times.