Patents by Inventor Perumal Alagarsamy

Perumal Alagarsamy 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: 20130040167
    Abstract: It is aimed to provide a perpendicular magnetic recording medium capable of dealing with an ultra-higher recording density than before and its manufacturing method. The present invention concerns a perpendicular magnetic recording medium including at least a seed layer made of noncrystalline ceramic, a crystalline orientation control layer and a magnetic layer made of a material mainly containing a FePt alloy in this order on a substrate. This perpendicular magnetic recording medium is suitably manufactured by forming at least the seed layer, the orientation control layer and the magnetic layer made of the material mainly containing the FePt alloy in this order on the substrate by sputtering, wherein the magnetic layer is formed at a predetermined temperature of 500° C. or less.
    Type: Application
    Filed: January 12, 2011
    Publication date: February 14, 2013
    Applicants: WD MEDIA (SINGAPORE) PTE. LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Perumal Alagarsamy, Yukiko Takahashi, Kazuhiro Hono, Tomoko Seki