Patents by Inventor Hongchuan Wong

Hongchuan Wong 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).

  • Micro-texture media made by polishing of a selectively irradiated surface
    Patent number: 6117499
    Abstract: A method of manufacturing a magnetic disk comprises the steps of: a) providing a substrate with a layer of an amorphous multi-component material at its surface; b) irradiating the amorphous layer (e.g. by applying heat from a heating element, laser beam, or the like) to thereby create micro-structurally changed regions in the amorphous layer; and c) chemo-mechanically polishing the amorphous layer to produce micro-texture features at or near the micro-structurally changed regions. The disk is then completed by depositing additional layers such as an underlayer, a magnetic layer, a protective overcoat, etc.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: September 12, 2000
    Assignee: Komag, Inc.
    Inventors: Javier Wong, Li-Ju Judy Lin, Douglas Allan Iams, Hongchuan Wong, Tsutomu Tom Yamashita