Patents by Inventor David Eugene Laughlin

David Eugene Laughlin 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 films having magnetic and non-magnetic regions and method of producing such films by ion irradiation
    Patent number: 6849349
    Abstract: Magnetic films having magnetic regions and non-magnetic regions are disclosed. The film is subjected to ion irradiation in order to produce chemically disordered regions in the film. The irradiated disordered regions may correspond to the non-magnetic regions of the film. Alternatively, the irradiated disordered regions may correspond to the magnetic regions of the film. In one embodiment, portions of a magnetic CrPt3 film are converted to non-magnetic regions by irradiating the regions with boron ions which disorder the CrPt3 film in the treated regions. The film may be patterned into magnetic regions and non-magnetic regions for applications such as magnetic recording media in computer disc drive systems.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: February 1, 2005
    Assignee: Carnegie Mellon University
    Inventors: Timothy John Klemmer, Ganping Ju, René Johannes Marinus van de Veerdonk, Todd Dennis Leonhardt, David Eugene Laughlin
  • Magnetic films having magnetic and non-magnetic regions and method of producing such films by ion irradiation
    Publication number: 20030113524
    Abstract: Magnetic films having magnetic regions and non-magnetic regions are disclosed. The film is subjected to ion irradiation in order to produce chemically disordered regions in the film. The irradiated disordered regions may correspond to the non-magnetic regions of the film. Alternatively, the irradiated disordered regions may correspond to the magnetic regions of the film. In one embodiment, portions of a magnetic CrPt3 film are converted to non-magnetic regions by irradiating the regions with boron ions which disorder the CrPt3 film in the treated regions. The film may be patterned into magnetic regions and non-magnetic regions for applications such as magnetic recording media in computer disc drive systems.
    Type: Application
    Filed: October 21, 2002
    Publication date: June 19, 2003
    Inventors: Timothy John Klemmer, Ganping Ju, Rene Johannes Marinus van de Veerdonk, Todd Dennis Leonhardt, David Eugene Laughlin