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:
Oct. 20, 2026
Filed:
Sep. 28, 2023
Denso Corporation, Kariya-city, JP;
Seiichiro Nishimachi, Kariya-city, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A deterioration determination device that determines deterioration of a reactor and a smoothing capacitor included in a power conversion device, includes: a storage unit that stores a charge determination value based on a voltage change when the smoothing capacitor with no deterioration is charged by a power source electric power supplied through the reactor with no deterioration; and a calculation unit that determines at least one of the reactor and the smoothing capacitor has deteriorated when the voltage change the smoothing capacitor during charging by the power source electric power supplied through the reactor is larger than the charge determination value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile