Patents by Inventor Martin Plumer

Martin Plumer 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).

  • Publication number: 20060256471
    Abstract: The writing pole is formed of a magnetic material and includes a pole tip having an air-bearing surface and a throat portion extending away from the pole tip and away from the air-bearing surface. At least two surfaces of the throat portion are non-perpendicular to the air-bearing surface.
    Type: Application
    Filed: July 18, 2006
    Publication date: November 16, 2006
    Applicant: Seagate Technology LLC
    Inventors: Martin Plumer, Nurul Amin, Vee Kong, Richard Michel, Johannes Van Ek
  • Publication number: 20050122619
    Abstract: A magnetic writer having an air bearing surface for confronting a surface of a rotating disc is disclosed. The magnetic writer includes a bottom pole and a top pole. The top pole includes a first top pole portion and a second top pole portion connected by a top pole extension. The top pole extension, which preferably has a uniform width at the air bearing surface, orients a magnetization of the first top pole portion substantially parallel to an air bearing surface of the magnetic writer. The bottom pole includes a base pole and a notch pole. The base pole is recessed from the air bearing surface to prevent or reduce fringe erasure fields. The notch pole, which abuts the base pole and extends from the air bearing surface to at least a magnetic throat height of the magnetic writer, has a magnetization oriented perpendicular to the air bearing surface.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 9, 2005
    Applicant: Seagate Technology LLC
    Inventors: Frank Stageberg, Martin Plumer, Vee Kong