Patents by Inventor Miura Hirotomo

Miura Hirotomo 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).

  • Multi-level type nonvolatile semiconductor memory device
    Publication number: 20030071302
    Abstract: A nonvolatile semiconductor memory device having nonvolatile memory cells, each of said memory cells including a semiconductor substrate of one type of electric conduction, a pair of source and drain regions of the opposite type of electric conduction formed in the semiconductor substrate, an electric charge-capturing film formed on a channel region between the pair of source and drain regions, and a gate electrode formed on the charge-capturing film and working as a control electrode.
    Type: Application
    Filed: November 26, 2002
    Publication date: April 17, 2003
    Applicant: Nippon Steel Corporation
    Inventors: Miura Hirotomo, Yasuo Sato