Patents by Inventor Buu Van

Buu Van 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).

  • Polishing memory disk substrates with reclaim slurry
    Patent number: 6461958
    Abstract: A process for polishing a metal surface with a polishing slurry is provided where the polishing slurry is collected and re-used in the polishing process. Embodiments of the present invention include polishing a nickel-phosphorous composition plated on an aluminum alloy memory disk substrate in a two step process where the first step includes a rough-finish polish of the nickel composition to a predetermined roughness and a where the second step includes polishing the metal coated substrate with a colloidal slurry and reclaiming the slurry for subsequent polishing.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: October 8, 2002
    Assignee: Seagate Technology LLC
    Inventors: Jimin Zhang, Ken Cummings, Mike Lojero, Hector Salcedo, Zeyang Zhou, Buu Van, Shapour Bakhtiari