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:
May. 13, 2025
Filed:
Jul. 28, 2021
Shinkawa Ltd., Tokyo, JP;
Hiroshi Kikuchi, Tokyo, JP;
Shinsuke Fukumoto, Tokyo, JP;
SHINKAWA LTD., Tokyo, JP;
Abstract
An electric circuit abnormality detection device includes a pulse generator, a directional coupler, and a detection unit. The detection unit includes a reference reflected wave database and a calculation part. The reference reflected wave database stores waveform information of a reference reflected wave inputted from the directional coupler when a pulse signal is inputted to a reference electric circuit that has a same wiring pattern as a pulse heater and does not have an abnormality. The calculation part detects an abnormality in the pulse heater by comparing waveform information of a reflected wave inputted from the directional coupler when the pulse signal is inputted to the pulse heater, with waveform information of the reference reflected wave stored in the reference reflected wave database.