Patents by Inventor Sanford J. Lewis

Sanford J. Lewis 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).

  • Patent number: 7343664
    Abstract: A method for fabricating a magnetic head includes forming a first pole and a flux shaping layer in spaced relation to the first pole. A nonmagnetic layer is formed adjacent the flux shaping layer and positioned on an air bearing surface (ABS) side of the flux shaping layer. A tapered recess is created in the nonmagnetic layer, the taper of the recess increasing (i.e., becoming deeper) towards the flux forming layer. The recess is filled with a magnetic material. A probe layer is formed such that it is in electrical communication with the magnetic material filling the recess.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: March 18, 2008
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Gautam Khera, Sanford J. Lewis, Galina Moutchaidze, Aron Pentek, Hugo Alberto Emilio Santini, Mason Lamar Williams, III
  • Patent number: 7185415
    Abstract: A method for fabricating a magnetic head includes forming a first pole and a flux shaping layer in spaced relation to the first pole. A nonmagnetic layer is formed adjacent the flux shaping layer and positioned on an air bearing surface (ABS) side of the flux shaping layer. A tapered recess is created in the nonmagnetic layer, the taper of the recess increasing (i.e., becoming deeper) towards the flux forming layer. The recess is filled with a magnetic material. A probe layer is formed such that it is in electrical communication with the magnetic material filling the recess.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: March 6, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Gautam Khera, Sanford J. Lewis, Galina Moutchaidze, Aron Pentek, Hugo Alberto Emilio Santini, Mason Lamar Williams, III
  • Patent number: 6385011
    Abstract: An air bearing slider embodiment of the present invention includes a body portion having an air bearing surface (ABS) side and a flexure surface side. The ABS side has at least one air bearing surface and at least one recessed area. A thin film composed of a compressive force material is deposited within the recessed area. The compressive force material produces an omnidirectional outward force within the recessed area that creates a positive crown and camber. Preferably, the thin film has a thickness range from 10 nm to 200 nm, and is composed of diamond-like carbon (DLC). An alternative air bearing slider includes a body portion with an ABS side and a flexure surface side. A thin film composed of a tensile force material is deposited upon said flexure side. The tensile force material creates an onmidirectional inward force on the flexure side which results in positive crown and camber. The manufacturing method for the improved sliders utilizes semiconductor processing techniques.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: May 7, 2002
    Assignee: International Business Machines Corporation
    Inventors: Yu-En Percy Chang, Jack Dana Cook, Cherngye Hwang, Sanford J. Lewis
  • Patent number: 5603156
    Abstract: A method of lapping the air bearing surface of a magnetoresistive head which minimizes the likelihood of interelement shorts at the air bearing surface is described. In a final, linear lapping phase, the air bearing surface is lapped back and forth parallel to the longitudinal axis of the head elements in an oscillatory path across a stationary lapping surface. Any scratches or smears of the elements will be along the length of the elements rather than transverse to the elements. Any transverse scratches or smears occurring in earlier lapping phases will be removed during the linear lapping phase.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: February 18, 1997
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Carol Y. Inouye, David J. Seagle, Albert J. Wallash, Robert O. Barr, Glen A. Garfunkel, Sanford J. Lewis