Patents by Inventor Nickolas C. Apuzzo

Nickolas C. Apuzzo 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).

  • Magnetic reinitialization of thin film magnetoresistive reproducing heads at the suspension level of media drive manufacturing
    Patent number: 5617289
    Abstract: The magnetic states of MR reproducing heads are reinitialized during media drive manufacturing by applying initializing magnetic fields to the transducers after they have been manufactured and incorporated into media drive assemblies.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 1, 1997
    Assignee: International Business Machines Corporation
    Inventors: Samir E. Abboud, Nickolas C. Apuzzo, Jeffrey B. Brown, Earl A. Cunningham, David M. Hannon, Raymond P. Mallette, Paul S. Tyler, Steven H. Voss, Albert J. Wallash
  • Motor starting method and apparatus
    Patent number: 5418436
    Abstract: A method for starting and operating an electric motor such as the spindle motor of a disk drive assembly employs a segmented stator winding. On startup, the winding segments are connected in series in order to maximize torque. Motor speed is detected, and when a predetermined speed is reached, the segments are connected in parallel to reduce the effective number of winding turns and maintain a control voltage for motor speed control. Switching of the winding segments can be by active elements such as FETs or by passive reactive elements responding directly to motor speed. For more gradual motor torque constant control, the winding may have more than two segments.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: May 23, 1995
    Assignee: International Business Machines Corporation
    Inventor: Nickolas C. Apuzzo