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:
Jan. 26, 2022
Sumida Corporation, Tokyo, JP;
Hiroyuki Miyazaki, Natori City, JP;
SUMIDA CORPORATION, , JP;
Abstract
An inverter circuit includes a primary-side circuit having a plurality of self-excited oscillator circuits connected to a DC power supply and a secondary-side circuit for outputting multi-phase AC power in accordance with oscillation of the plurality of self-excited oscillator circuits. Each of the plurality of self-excited oscillator circuits includes a power transmission coil, a resonant capacitor, a pair of switching elements, a drive coil, and a phase-shift filter. A voltage is applied to each control electrode of the pair of switching elements from the drive coil of another self-excited oscillator circuit. The phase of the voltage applied to each control electrode of the pair of switching elements is shifted by a phase-shift amount corresponding to number of phases of the multi-phase AC power for each self-excited oscillator circuit according to at least an action of the phase-shift filter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile