Patents by Inventor Motoi Fukuura

Motoi Fukuura 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: 20120175243
    Abstract: To provide a method for manufacturing a perpendicular magnetic recording medium which has improved electromagnetic conversion characteristics, and thus making it possible to achieve the much higher recording density. Disclosed is a method for manufacturing a perpendicular magnetic recording medium to be used for recording information by a perpendicular magnetic recording system, the perpendicular magnetic recording medium including at least a soft magnetic layer, an underlayer, and a magnetic recording layer on a substrate. In the method, the underlayer is formed by sputtering deposition, including a low-gas-pressure deposited layer deposited at a low gas pressure during the deposition, and a high-gas-pressure deposited layer deposited at a high gas pressure during the deposition. The high-gas-pressure deposited layer is formed of a multilayer deposited by decreasing a deposition rate in a stepwise manner.
    Type: Application
    Filed: June 22, 2011
    Publication date: July 12, 2012
    Applicant: WD MEDIA (SINGAPORE) PTE. LTD.
    Inventors: Motoi Fukuura, Takashi Koike, Shigeaki Furugoori, Masaki Uemura