Patents by Inventor Masago Kuwabara

Masago Kuwabara 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).

  • Texture treatment for carbon substrate and for carbon overcoat layer of magnetic disks
    Patent number: 5599590
    Abstract: A texture treatment for a carbon substrate of a magnetic disk or for a carbon overcoat layer of a magnetic disk is effective to prevent the generation of a stiction phenomenon between a magnetic head and the surface of a magnetic disk. The texture treatment for a carbon substrate or carbon overcoat of a magnetic disk involves the steps of: preparing the carbon disk surface; forming a catalytic material layer on the surface; and performing a heat treatment of the disks in an oxidizing atmosphere. Preferably, islands of catalytic material are formed on the surface by sputtering, and a laser heat treatment is used in an oxidizing atmosphere.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: February 4, 1997
    Assignee: Kobe Steel USA Inc.
    Inventors: Hidetaka Hayashi, Masago Kuwabara, Kazuo Muramatsu, Dilip Kuchibhatla