Patents by Inventor Robert Glenn Hadfield

Robert Glenn Hadfield 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).

  • Air bearing slider having a relieved trailing edge
    Patent number: 5872684
    Abstract: The present invention discloses a slider having an alumina overcoat layer that is etched so as to be tapered, sloped, inclined, recessed, or faceted with respect to the air-bearing surfaces of the slider. The present invention also relates to a method for eliminating overcoat protrusions by etching away portions of the alumina overcoat layer at row level. Preferably, photolithographic techniques are used at row level to both etch the air-bearing surfaces of the slider and to etch away potential protrusion regions of the alumina overcoat.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Robert Glenn Hadfield, Cherngye Hwang, Andrew Chiuyan Ting, Eric K. Wong, Tanya M. Zook