Patents by Inventor Sergel Sochava

Sergel Sochava 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 information medium
    Publication number: 20020041564
    Abstract: An optical information medium comprising at least two data layers for bearing recorded information, and a servo layer for bearing tracking servo information which is independently formed from the data layers; wherein the medium is used with a recording or reading system wherein a data beam for recording or reading the data in the data layer and a servo beam for reading the tracking servo information in the servo layer are used, and the servo layer is read by the servo beam that had passed through the data layer; and a filter layer is disposed between the data layer and the servo layer, and the filter layer exhibits higher absorption to the data beam than to the servo beam.
    Type: Application
    Filed: April 5, 2001
    Publication date: April 11, 2002
    Inventors: Jiro Yoshinari, Takuya Tsukagoshi, Hideki Hirata, Naoki Hayashida, Tokuyuki Honda, Mark E. McDonald, Michael V. Morelli, Andrew J. Daiber, Sanjoy Ghose, Lambertus Hesselink, Shunichi Nishimura, Sergel Sochava