Patents by Inventor Takenori Hoshino

Takenori Hoshino 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).

  • Acoustic inspection method for hard disks, acoustic inspection system for hard disks, and program memory medium
    Patent number: 6523413
    Abstract: The invention has been developed to find out a blemish on the surface of a disk (in particular, a stroke mark in the CSS area) without opening up a hard disk. Furthermore, the invention is intended not to cause extra labor or cost in fabrication of hard disks, and to be applicable to hard disk already in widespread use. To this end, with an acoustic inspection method of the invention, inspection of whether or not a blemish has been inflicted on the surface of a disk (in particular, a blemish in the CSS area) can be conducted without opening up the hard disk by detecting vibration occurring when a head of the hard drive comes into collision with the blemish on the disk from vibration propagating to a housing of the hard disk.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: February 25, 2003
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Takenori Hoshino, Masamitsu Miki, Yoshimi Maehara