Patents by Inventor Junichi Ishimaru

Junichi Ishimaru 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).

  • Optical and magnetooptical recording medium having a low thermal conductivity dielectric layer
    Patent number: 5577021
    Abstract: An optical recording medium comprises a transparent substrate, a first dielectric layer, a recording layer, a second dielectric layer and a reflecting layer stacked in this order, wherein said first dielectric layer has a thermal conduction coefficient of 0.03 to 0.1 .mu.W/K, said second dielectric layer has a thermal conduction coefficient of 0.01 to 0.03 .mu.W/K, and said reflecting layer has a thermal conduction coefficient of 4 to 12 .mu.W/K, where the thermal conduction coefficient is defined as a product of the thermal conductivity and the layer thickness. The first and/or second dielectric layers may be of an amorphous metal nitride comprising Al and Si and optionally C and having bonds with hydrogen.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: November 19, 1996
    Assignee: Teijin Limited
    Inventors: Kenji Nakatani, Toru Horiguchi, Junichi Ishimaru, Hiroshi Hara