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:
Feb. 03, 2026
Filed:
Jun. 30, 2021
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takanori Amaya, Osaka, JP;
Yasuo Nanbu, Osaka, JP;
Abstract
An electric motor includes a rotor having an iron core to which a rotary shaft extending in a shaft center direction is fixed, and a stator disposed to face the rotor. The stator includes a plurality of teeth extending to the rotor, and a slot positioned between adjacent teeth among the plurality of teeth. The iron core includes a plurality of magnet insertion holes and a plurality of permanent magnets disposed in the plurality of magnet insertion holes, respectively, and the plurality of permanent magnets are rare earth magnets. An outermost peripheral shape of the iron core corresponding to a magnetic pole of each of the plurality of permanent magnets includes a plurality of arcs having different radii, the number of poles of the rotor is greater than or equal to 10, and a residual magnetic flux density of the permanent magnet is greater than or equal to 1.3T.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile