Patents by Inventor Don Polensky

Don Polensky 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).

  • Controlled laser texturing glass-ceramic substrates for magnetic recording media
    Patent number: 5958545
    Abstract: The height of protrusions formed during laser texturing a glass-ceramic substrate is controlled by controlling the amount of the crystalline-phase of the substrate, to less than 70% by volume. In an embodiment, the amount of crystalline-phase is controlled by heating under controlled conditions to convert a glass substrate into the glass-ceramic substrate comprising a controlled amount of crystalline phase.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: September 28, 1999
    Assignee: Seagate Technology, Inc.
    Inventors: David Kuo, Don Polensky
  • Controlled laser texturing glass-ceramic substrates for magnetic recording media
    Patent number: 5853820
    Abstract: The height of protrusions formed during laser texturing a glass-ceramic substrate is controlled by controlling the amount of the crystalline-phase of the substrate, to less than 70% by volume. In an embodiment, the amount of crystalline-phase is controlled by heating under controlled conditions to convert a glass substrate into the glass-ceramic substrate comprising a controlled amount of crystalline phase.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: December 29, 1998
    Assignee: Seagate Technology, Inc.
    Inventors: David Kuo, Don Polensky