Patents by Inventor Masayuki Kumazawa

Masayuki Kumazawa 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).

  • Data terminal equipment
    Publication number: 20020016915
    Abstract: A data terminal equipment retrieves index data indicating content data. Then, the data terminal equipment authenticates the content data based on the index data. Only if the authenticity of the content data has been confirmed, the data terminal equipment retrieves the content data from a first server.
    Type: Application
    Filed: May 30, 2001
    Publication date: February 7, 2002
    Inventors: Masayuki Kumazawa, Yuji Shimizu