Patents by Inventor Neil D. Heiman

Neil D. Heiman 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).

  • Precision-etched textured stop/start zone for magnetic-recording disks
    Patent number: 5635269
    Abstract: A magnetic-recording disk comprising a metal substrate disk having a textured annular first surface area with an outer diameter which is substantially less than the diameter of the metal substrate is disclosed herein. The metal substrate disk further has a smooth annular second surface area between the first surface area's outer diameter and the metal substrate's circumferential edge. The textured annular first surface area has a laser-etched circular pattern. Furthermore the metal disk substrate of an aluminum alloy, a titanium alloy, or an austenitic stainless steel has a thin-film coating selected from the group consisting of nitrides, carbides, or borides of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum or tungsten.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: June 3, 1997
    Assignee: Tulip Memory Systems, Inc.
    Inventors: Richard D. Weir, Carl W. Nelson, Neil D. Heiman
  • Amorphous magnetic film
    Patent number: 4271232
    Abstract: A magnetic material of amorphous iron-nitride and a method for preparing the same are provided.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: June 2, 1981
    Assignee: International Business Machines Corporation
    Inventors: Neil D. Heiman, Robert L. White, Robert I. Potter, Paul A. Albert