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. 08, 2025
Filed:
Oct. 11, 2021
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Naoki Yamamuro, Nagoya, JP;
Junya Watanabe, Nagakute, JP;
Shigeki Matsumoto, Nagoya, JP;
Yoshikazu Jikuhara, Susono, JP;
Ryota Suzuki, Ikeda, JP;
Yuki Yamashita, Oota-ku, JP;
Hitoshi Murakami, Setagaya-ku, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A data management system includes a plurality of data management apparatuses, a certification authority group, and a time stamp authority group. In making an application for a proof of existence of invention information, the data management apparatus generates an invention hash, and transmits the invention hash to selected time stamp authorities of the time stamp authority group. Each of the time stamp authorities having received the invention hash generates a time stamp token. The data management apparatus acquires the time stamp token from each of the plurality of time stamp authorities to which the invention hash has been transmitted.