Patents by Inventor Yoshihiko Ohkawara

Yoshihiko Ohkawara 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).

  • Patent number: 7300712
    Abstract: In a magnetic sensor (1) including a substrate (10) having a magnetism-sensitive element (11) formed thereon, a hard membrane (14) is formed on the outermost surface, an organic film (13) to relieve the stress caused by the hard membrane (14) is formed under the hard membrane (14), and an inorganic film (12) to relieve the stress caused by the organic film (13) is formed between the organic film (13) and magnetism-sensitive element (11). Also, an intermediate film formed from an element having a large force of bonding to carbon may be formed between the organic film (13) and hard membrane (14). Thus, the magnetic sensor (MR sensor, for example) can be protected against an external shock.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: November 27, 2007
    Assignee: Sony Manufacturing Systems Corporation
    Inventors: Masaaki Kusumi, Mitsuru Ohno, Michio Okano, Hideki Nakamori, Touru Sumiya, Akitaka Tsunogae, Tomoyuki Nakada, Teruyuki Miura, Yoshihiko Ohkawara
  • Publication number: 20040157067
    Abstract: In a magnetic sensor (1) including a substrate (10) having a magnetism-sensitive element (11) formed thereon, a hard membrane (14) is formed on the outermost surface, an organic film (13) to relieve the stress caused by the hard membrane (14) is formed under the hard membrane (14), and an inorganic film (12) to relieve the stress caused by the organic film (13) is formed between the organic film (13) and magnetism-sensitive element (11). Also, an intermediate film formed from an element having a large force of bonding to carbon may be formed between the organic film (13) and hard membrane (14). Thus, the magnetic sensor (MR sensor, for example) can be protected against an external shock.
    Type: Application
    Filed: October 20, 2003
    Publication date: August 12, 2004
    Applicant: Sony Precision Technology Inc.
    Inventors: Masaaki Kusumi, Mitsuru Ohno, Michio Okano, Hideki Nakamori, Touru Sumiya, Akitaka Tsunogae, Tomoyuki Nakada, Teruyuki Miura, Yoshihiko Ohkawara