Patents by Inventor Teruaki Santoki

Teruaki Santoki 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 recording medium and process for producing the same
    Publication number: 20020094458
    Abstract: A magnetic recording medium, comprising: a substrate; and a maghemite thin film formed on the substrate, having a surface roughness represented by a center line mean roughness Ra of 0.1 to 1.0 nm, and a coercive force squareness S* value of not less than 0.50.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 18, 2002
    Inventors: Kenichi Nakata, Kousaku Tamari, Jun Koujima, Teruaki Santoki
  • Magnetic recording medium and process for producing the same
    Publication number: 20020068193
    Abstract: A magnetic recording medium, comprises a substrate; and a Co-containing spinel-type iron oxide thin film formed on the substrate, having a Co content of 1 to 20 mol % based on Fe, a coercive force value of not less than 159 kA/m (2,000 Oe), a thickness of 5 to 200 nm, a center line average height Ra of 0.1 to 0.8 nm and a maximum height (Rmax) of not more than 10 nm. The magnetic recording medium is capable of exhibiting a relatively high coercive force, especially a coercive force of not less than 159 kA/m (2,000 Oe) despite as small a film thickness as not more than 200 nm, and an excellent surface smoothness.
    Type: Application
    Filed: October 15, 2001
    Publication date: June 6, 2002
    Inventors: Teruaki Santoki, Yasuo Kakihara, Mitsuru Matsuura, Setsuo Yamamoto