Patents by Inventor Yoshuke Ide

Yoshuke Ide 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).

  • Spin valve element and thin film magnetic head
    Publication number: 20040023075
    Abstract: A spin valve element includes an antiferromagnetic layer, a pinned magnetic layer formed in contact with the antiferromagnetic layer so that the magnetization direction thereof is pinned by an exchange coupling magnetic field with the antiferromagnetic layer, a nonmagnetic conductive layer in contact with the pinned magnetic layer, and a free magnetic layer in contact with the nonmagnetic conductive layer. The free magnetic layer includes a nonmagnetic intermediate layer, and first and second free magnetic layers with the nonmagnetic intermediate layer provided therebetween, the second free magnetic layer is formed in contact with the nonmagnetic conductive layer, the first and second free magnetic layers are antiferromagnetically coupled with each other to bring both layers into a ferrimagnetic state, and either of the first and second free magnetic layers comprises a ferromagnetic insulating film.
    Type: Application
    Filed: July 31, 2003
    Publication date: February 5, 2004
    Inventors: Masamichi Saito, Kenichi Tanaka, Yoshuke Ide, Naoya Hasegawa