Patents by Inventor Sigeru Tanaka

Sigeru Tanaka 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).

  • Tray for conveying magnetic head for magnetic disk
    Patent number: 6780490
    Abstract: Trays for carrying magnetic heads for magnetic disks are provided, such as magnetic-head carrying trays which are less apt to cause electrical damage due to electrostatic discharge, an excess flow of contact current, etc. or physicochemical damage such as particle detachment, contamination with ions, etc. The trays for carrying magnetic heads for magnetic disks are trays obtained by molding a conductive thermoplastic resin composition containing a conductive loading material, e.g., a conductive filler, and have a surface resistance of from 103 to 1012 &OHgr;.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: August 24, 2004
    Assignees: Yukadenshi Co., Ltd., Alps Electric Co., Ltd.
    Inventors: Sigeru Tanaka, Etuji Asano, Tomohiko Tanaka, Koichi Sagisaka