Patents by Inventor Steve C. Puga

Steve C. Puga 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).

  • Layered return poles for magnetic write heads
    Patent number: 7933096
    Abstract: Methods and structures for the fabrication of both thin film longitudinal and perpendicular write heads are disclosed. A unique feature of these write heads is the inclusion of layered return poles, which comprise alternating layers of 22/78 and 80/20 NiFe alloys. The alternating layers also vary in thickness, the 22/78 NiFe layers having a nominal thickness of 1500 angstroms and the 80/20 NiFe layers having a nominal thickness of about 75 angstroms. Head efficiency and signal to noise ratios are significantly improved in heads having layered return pole construction.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: April 26, 2011
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Donald G. Allen, Hieu Lam, Terence Tin-Lok Lam, Steve C. Puga
  • Layered return poles for magnetic write heads
    Publication number: 20090168260
    Abstract: Methods and structures for the fabrication of both thin film longitudinal and perpendicular write heads are disclosed. A unique feature of these write heads is the inclusion of layered return poles, which comprise alternating layers of 22/78 and 80/20 NiFe alloys. The alternating layers also vary in thickness, the 22/78 NiFe layers having a nominal thickness of 1500 angstroms and the 80/20 NiFe layers having a nominal thickness of about 75 angstroms. Head efficiency and signal to noise ratios are significantly improved in heads having layered return pole construction.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 2, 2009
    Inventors: Donald G. Allen, Hieu Lam, Terence Tin-Lok Lam, Steve C. Puga