Patents by Inventor Akinobu Wakabayashi

Akinobu Wakabayashi 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).

  • Lubricant For Recording Medium And Magnetic Disk
    Publication number: 20080020171
    Abstract: The present invention provides a lubricant for recording media that does not readily decompose, and which has high adhesion to recording media, and a magnetic disk that is durable against continuous sliding under high-speed rotation. The present invention provides a lubricant for recording media containing: a perfluoropolyether compound represented by Formula (1), R1—CH2CF2O—(CF2CF2O)m—(CF2O)n—CF2CH2—R2??(1) wherein R1 represents R represents a C1-4 haloalkyl group, R2 represents —OCH2CH(OH)CH2OH, and m and n are each independently 1-30; and another perfluoropolyether compound represented by Formula (2), R1—CH2CF2O—(CF2CF2O)m—(CF2O)n—CF2CH2—R3??(2) wherein R1, m and n are as defined above and R3 represents —OCH2CH(OH)CH2OCH2CH(OH)CH2OH. The present invention also provides a magnetic disk having a lubricating layer essentially consists of such a lubricant.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 24, 2008
    Applicant: MATSUMURA OIL RESEARCH CORP.
    Inventors: Akinobu Wakabayashi, Yasuo Sakane