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Pat. 11257616 United States, Int. Cl.22 H02M 1/44, H01F 27/08, H01F 27/24, H01F 27/40, H02M 7/00, H03H 7/01, H02M 7/537, H02P 27/06. Power conversion device and high-voltage noise filter : Appl. N 16/720995 : Filed 19.12.2019 : Pub. 22.02.2022 : / Masaki Noda, Hiroki Funato, Isao Hoda, Hitoshi Taniguchi ; Assignee Hitachi Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11257616/en?oq=US11257616.html (дата обращения: ДД.ММ.ГГГГ).