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. 09, 2026
Filed:
Mar. 16, 2024
Denso Corporation, Kariya-city, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Shogo Watanabe, Kariya-city, JP;
Tokuya Inagaki, Kariya-city, JP;
Ryosuke Murakami, Kariya-city, JP;
Hirofumi Yamashita, Kariya-city, JP;
Shinnosuke Sugawara, Toyota, JP;
Takeshi Matsui, Nagoya, JP;
DENSO CORPORATION, Kariya-city, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A log management device acquires an alive monitoring log indicating that a security sensor of an electronic control unit mounted on a vehicle is operating; records acquisition of the alive monitoring log in an alive monitoring table; identifies an unacquired alive monitoring log, and records, in the alive monitoring table, an unacquired period during which the unacquired alive monitoring log is not acquired; and invalidates a record of the unacquired alive monitoring log in the alive monitoring table when the unacquired period of the unacquired alive monitoring log is equal to or longer than a predetermined period.