Patents by Inventor Yoshikazu Maruyamai

Yoshikazu Maruyamai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080012679
    Abstract: A multilayer inductor having a uniformly improved direct current superposition property and an increased inductance value is disclosed. The multilayer inductor contains a laminate of a plurality of first insulating layers and a plurality of conductive layers, and the conductive layers and through hole conductors are connected to form a helical coil in the laminate. A second insulating layer which has a magnetic permeability lower than those of the first insulating layers is disposed such that it crosses an inner magnetic path of the helical coil, and a margin of the second insulating layer overlaps with the conductive layer in the stacking direction and is in contact with the conductive layer in the overlap portion. The magnetic flux density in the laminate is likely to be highest in the overlap portion, and thus, the highest-density magnetic flux passes through the second insulating layer inevitably, whereby the direct current superposition property can be uniformly improved.
    Type: Application
    Filed: May 30, 2007
    Publication date: January 17, 2008
    Applicant: Taiyo Yuden Co., Ltd.
    Inventors: Kenji Okabe, Kazuhiko Nakamura, Toshifumi Kawata, Yoshikazu Maruyamai